• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    FILTERING APPLIANCE. A filtering apparatus (12) is equipped with a first body (20), a wrapping unit (22) connected to a lower part of the first body (20) and a filtering unit (24), which is accommodated inside the wrap unit (22). The wrap unit (22) consists of an outer wrap (40), which is formed as a cylinder with a transparent light-permeable material bottom, and an inner wrap (42) that is placed inside the outer wrap ( 40). The wrapping unit (22) is inserted into a body installation hole (20) (36) which, through the opening at the bottom of the first rotation, projections (58) and retaining walls (56) provided on a surface outer circumferential section of the wrapping unit (22) are positioned to fit with support elements (38) provided in the installation hole (36), thus resulting in a connected state.
    公开号:BR112013028879B1
    申请号:R112013028879-5
    申请日:2011-07-21
    公开日:2020-11-03
    发明作者:Norihide Yamase；Daisukeoikawa
    申请人:Smc Kabushiki Kaisha；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    The present invention relates to a filtering apparatus for removing dust, particulates and others more contained in a fluid. PREVIOUS TECHNIQUE
    A filtration device for removing dust, particulates and others more contained in a pressure fluid that is supplied for fluid pressure devices is known so far. For example, as revealed in Japanese open patent publication 2008-188489, a filtration device like this consists of a fluid inlet port provided on one side upstream of a fluid pressure device provided with the pressure fluid , and for which the pressure fluid is supplied, a main body having a fluid outlet port through which the pressure fluid is discharged, a filter element connected to a lower part of the main body, and a casing, which it is connected to a lower part of the main body in order to cover the filter element.
    In addition, the pressure fluid, which is supplied to the fluid inlet port, is supplied into the envelope and passes from an outer circumferential face to an inner circumferential face of the filter element, whereby dust, particulates and others more contained in the pressure fluid are removed. A clean pressure fluid flows to the fluid outlet port from the inner circumferential face of the filter element, and then the clean pressure fluid is supplied to other downstream fluid pressure devices. SUMMARY OF THE INVENTION
    The filtering device discussed earlier is installed, for example, on an assembly line or the like of a factory, where the fluid inlet port and the fluid outflow port are connected to the tubes respectively. Additionally, with a filtering device like this, because the filter element tends to become clogged due to an increase in the amount of dust, particulates and others that stick to the filter element, periodic maintenance operations must be performed to replace the filter element, or to remove dust, particulates and others more of it.
    Despite this, because the filter element is connected to the main body, in the event that such maintenance operations are performed, the filter element must be removed from the main body after the wrap has been separated from the main body, and fixing and removal of the filter element is unpleasant. Additionally, because the tubes are connected to the fluid inlet port and the fluid outlet port of the main body respectively, disassembly of the main body is complicated, and in the case where the installation location of the main body is in a position high or low position operations to remove the filter element from the main body are extremely difficult.
    In addition, the filter element is arranged to protrude from the main body, and the wrap is provided to cover the outside of the filter element. Consequently, if the casing is disassembled for the purpose of replacing the filter element, since the filtering apparatus has a structure to enable free movement of the casing only after an open end of the casing has been moved in an axial direction towards the end of the casing. filter element, the operations for removing and fixing the wrap tend to be very laborious.
    A general objective of the present invention is to provide a filtering apparatus that enables fixing and removing a filter to be carried out easily and safely, regardless of the location of installation of the filtering apparatus.
    The present invention is a filtering apparatus, comprising: a body having ports through which a pressure fluid is supplied and discharged; a casing in the form of a cylinder with a bottom, which is fixable and separable with respect to the body, and where an interior of the casing communicates with the doors; a filtering unit accommodated within the casing, the filtering unit having a filter element to remove dust, particulates and others more contained in the pressure fluid, and a fastener to retain the filter element; and a connection mechanism for connecting the casing and the filtering unit, and for regulating mutual relative displacement in an axial direction between the casing and the filtering unit.
    According to the present invention, the filter unit including the filter element is accommodated within a wrapper that constitutes the filtering apparatus, whereby the wrapper and the filtering unit are connected by means of a connection mechanism in such a way that the relative relative displacement between the wrap and the filter unit is regulated. In addition, the casing within which the filter unit is accommodated is separable from the body.
    In this way, in a state in which the filter unit is accommodated within the envelope, because the envelope and the filter unit can be connected easily and safely by the connection mechanism while the mutual axial displacement between them is regulated. , for example, when fixing or separating the wrapper with respect to the body, simultaneously with this, the filtering unit can be fixed or separated with respect to the body. As a result, compared to a filtration device according to conventional technique in which the filter element is connected to the body, the fixing and detaching operations are extremely easy to perform. For example, even in the case where the filtering device is installed in a high location, simply by separating the wrap, operations to change or replace the filtering unit can be performed at the same time, so maintenance operations are easy to perform. Additionally, because the filter unit is accommodated inside the casing, compared to the conventional filtering apparatus, if the casing is removed from the body or attached to it, the amount of movement of the casing in the axial direction is extremely small, and so such fixing and undocking operations are easy to perform and are suitable to be performed in a reduced space or the like.
    The foregoing and other objectives, features and advantages of the present invention will become more apparent with the following description when considered in combination with the accompanying drawings in which the preferred embodiments of the present invention are shown by way of illustrative example. BRIEF DESCRIPTION OF THE DRAWINGS
    Figure 1 is an external perspective view of a fluid pressure unit including a filter apparatus according to a first embodiment of the present invention;
    Figure 2 is a front view of the fluid pressure unit shown in Figure 1;
    Figure 3 is an exploded sectional view in perspective of the filter apparatus of Figure 1;
    Figure 4 is a total cross-sectional view of the filtering apparatus shown in Figure 3;
    Figure 5 is an exploded perspective view of a filtering device that forms part of the fluid pressure unit of Figure 1;
    Figure 6 is an exploded perspective view of a wrapping unit that forms part of the filter apparatus of Figure 5;
    Figure 7 is an exploded perspective view of a filter unit that forms part of the filter apparatus of Figure 5;
    Figure 8A is a cross-sectional view taken along line VIIIA-VIIIA in figure 2;
    Figure 8B is a cross-sectional view showing a condition in which a release key in Figure 8A is lowered and a regulated state of rotation between a first body and a wrap unit is released;
    Figure 9 is a full cross-sectional view of a lubricator that forms part of the fluid pressure unit of Figure 1;
    Figure 10 is an exploded perspective view of a wrap unit that forms part of the lubricator of Figure 1;
    Figure 11 is an external perspective view of a fluid pressure unit including a filter apparatus according to a second embodiment of the present invention;
    Figure 12 is a front view of the fluid pressure unit shown in Figure 11; and
    Figure 13 is a full cross-sectional view of a filter-regulator that forms part of the fluid pressure unit of Figure 12. DESCRIPTION OF MODALITIES
    In figure 1, reference number 10 indicates a fluid pressure unit including a filter apparatus according to the first embodiment of the present invention.
    As shown in figures 1 and 2, the fluid pressure unit 10 consists of a filtering device 12 that removes dust, particles and others more contained in the pressure fluid, a regulator 14 that reduces the pressure fluid pressure, a lubricator 16 that mixes a lubricating oil with the pressure fluid, and the connectors 18a, 18b that connect the filtering apparatus 12, the regulator 14 and the lubricator 16 mutually.
    The aforementioned filter apparatus 12, regulator 14 and lubricator 16 function as fluid pressure devices for which a pressure fluid is supplied to the interiors thereof. The regulator 14 is arranged between the filter apparatus 12 and the lubricator 16.
    As shown in figures 1 to 7, the filter apparatus 12 includes a first body (body) 20, a wrap unit (wrap) 22 connected to a lower part of the first body 20 and a filter unit 24 which is installed in the inside the wrap unit 22.
    The first and second port (ports) 26, 28 for supplying and discharging a pressure fluid are provided laterally, that is, on respective sides of the first body 20, the first and second port 26, 28 opening approximately in a horizontal direction ( see figure 4). The first port 26 is connected to a pipe not shown, and the pressure fluid is supplied through a pipe like this. The first door 26 communicates with a first communication passage 30 that extends in the axial direction (the direction of the arrows A and B) through the interior of the first body 20.
    The second port 28 discharges the pressure fluid supplied through the first port 26 into a regulator 14 described later. The second port 28 communicates with a second communication passage 32 that extends in the axial direction (the direction of the arrows A and B) through the interior of the first body 20.
    In addition, the pairs of locking projections 34a, 34b, each of which is formed in a mutual confrontation relationship on the outer edges of end surfaces on which the first and second ports 26, 28 are provided, are arranged on lateral surfaces of the first body 20.
    An installation hole 36 into which the wrap unit 22 is inserted opens in a lower part of the first body 20. The first communication passage 30 communicates with an external circumferential face of the installation hole 36, which is realized with a shape approximately circular in cross section, while the second communication passage 32 communicates with a central part of the installation hole 36.
    As shown in figures 3 and 4, a plurality of the support elements 38, which project radially inwardly, are formed on the inner circumferential surface of the installation hole 36. The projections 58 of an inner shell 42 (second shell part ) constituting the wrapping unit 22, and the retaining walls 56, are fitted with the support elements 38. The support elements 38 are separated at mutually equal intervals along the circumferential direction of the installation hole 36.
    The wrapper unit 22 includes an outer wrapper 40 formed as a cylinder with a bottom, the inner wrapper 42 which is inserted into the outer wrapper 40, a release button 44 arranged to be moved with respect to the outer wrapper 40 and a drain cock 46 arranged in lower parts of the outer envelope 40 and the inner envelope 42.
    The outer shell 40 is formed with a substantially constant diameter and a predetermined length in the axial direction (the direction of arrows A and B) of a light-permeable transparent resin material (acrylic, polycarbonate, etc.). A bottom part of the outer wrap 40 is formed in a hemispherical shape, and the upper end of the outer wrap 40 opens upwards.
    A pair of connecting tabs 48a, 48b (see figure 6) that project upwards (in the direction of arrow A) in the axial direction is formed in an upper part of the outer envelope 40, and an opening for key 50, in which the release key 44 described later is assembled, it is formed in a position located between one of the connecting tabs 48a and the other of the connecting tabs 48b. The connecting tabs 48a, 48b are capable of being deformed in radial directions of the outer casing 40. The holes 54, with which the respective projections 52 of the inner casing 42 are pluggable, are arranged in approximately central parts of the connecting tabs 48a, 48b. The holes 54 open in approximately rectangular shapes.
    Additionally, the opening for key 50, which is formed as an approximately rectangular cutout extends in the axial direction downwards (in the direction of arrow B) from the upper edge of the outer envelope 40.
    In addition, a plurality of the retaining walls 56, which gradually expand in diameter in a radially outward direction, is formed in an upper part of the outer envelope 40. The retaining walls 56 are mutually separated at substantially equal intervals along the circumferential direction of the outer envelope 40, such that the projections 58 are able to be retained by the retaining walls 56 if the inner envelope 42 is accommodated within the outer envelope 40.
    On the other hand, a boss 60, into which a drain boss 68 (described later) of the inner envelope 42 is inserted, is formed at a substantially central location along the geometric axis on a bottom part of the outer envelope 40 .
    The inner shell 42, similar to the outer shell 40, is formed with a substantially constant diameter, for example, of a transparent resin material permeable to light (polycarbonate or similar) and extends for a predetermined length along the axial direction ( the direction of arrows A and B). A bottom part of the inner envelope 42 is formed in a hemispherical shape, and the upper end of it opens upwards. The outer diameter of inner envelope 42 is set to be equal to or slightly less than the inner diameter of outer envelope 40 (see figure 4).
    Additionally, a plurality of the projections 58, which project radially outwardly from the outer circumferential surface thereof, are formed in an upper part of the inner envelope 42, the projections 58 being arranged at substantially equal intervals mutually along the circumferential direction of the envelope internal 42. The numbers of the projections 58 and the retaining walls 56 are set equal to the number of the supporting elements 38 of the first body 20, and the interval between the adjacent projections 58 and the retaining walls 56 is established to be the same interval between adjacent support elements 38.
    Angled surfaces, which are angled upwards, are provided on the lower parts of the projections 58, while the projections 58 have flat shapes extending substantially horizontally on the upper surfaces of the projections 58. Furthermore, if the inner envelope 42 is accommodated within the outer casing 40, the inclined surfaces of the projections are retained leaning against the retaining walls 56 respectively.
    In addition, between two adjacent projections 58, a pair of projections 52 is provided, which project externally at a predetermined height with respect to the outer circumferential surface of the inner envelope 42, such that, on an occasion where the inner envelope 42 is mounted with respect to the outer envelope 40, the projections 52, which are realized with substantially rectangular shapes in cross section, fit with the holes 54 of the connecting tabs 48a, 48b. As a result, outer shell 40 and inner shell 42 are strongly connected together by the pair of connecting tabs 48a, 48b.
    In addition, an annular wall 62, which is reduced in diameter in a radially inward direction with respect to the outer circumferential surface of the inner envelope 42, is formed in an upper part of the inner envelope 42. A plurality of hooks (first elements of 64), which protrude from the upper part thereof, are arranged on the annular wall 62, and together with this a first sealing ring 66 made of an elastic material is installed on an external circumferential face of the annular wall 62. The hooks 64 are spaced at mutually equal intervals along the circumferential direction of the inner envelope 42, the upper ends of the hooks 64 projecting in radially outward directions. Otherwise reported, the upper ends of the hooks 64 are L-shaped in cross section and protrude radially outwards.
    A deflector (fastener) 82 (described later), which forms part of the filter unit 24, is retained by the hooks 64 if the filter unit 24 is accommodated inside the wrap unit 22 including the inner wrap 42.
    On the other hand, a drain boss 68, which projects in the axial direction (the direction of the arrows A and B) in a substantially central part on the geometric axis, is formed in the bottom part of the inner envelope 42. A hole of drain 70 into which the drain cock 46 is inserted is formed inside the drain spout 68.
    Furthermore, on an occasion where the inner casing 42 is mounted with respect to the outer casing 40, after the drain spout 68 of the inner casing 42 has been inserted into the hollow hole 60 of the outer casing 40, the drain cock 46 is inserted (for example, lightly fitted by pressure) into the drain hole 70, and fixed inside the inner casing 42 by means of a fastener 72.
    A second seal ring 74 made of an elastic material is mounted via an annular groove on an external circumferential surface of the drain cock 46, such that by inserting the second seal ring 74 into the drain hole 70, and by the support of the even against the inner circumferential surface of the drain hole 70, leakage of pressure fluid between the drain cock 46 and the drain hole 70 is prevented.
    The release key 44 consists of a block that is L-shaped in cross section, which is installed in the opening for key 50, in such a way that a projecting region of the same is positioned on an external side of the outer envelope 40 and on a lower side of the release button 44 (in the direction of arrow B). The release key 44 is arranged to move in the up and down directions (the directions of arrows A and B) along the opening for key 50, with a spring 76 being placed between the release key 44 and a surface of lower end of the opening for key 50. Thus, the release key 44 is normally in a state of being predisposed upwards in the outer envelope 40 (in the direction of arrow A).
    In addition, if the wrapping unit 22 is installed with respect to the installation hole 36 of the first body 20, the upper end of the release key 44 is inserted into a recess 78 (see figure 8A) that is formed in the installation hole 36 of the first body 20. As a result, the displacement in a direction of rotation of the wrap unit 22 with respect to the first body 20 is regulated.
    Otherwise reported, the release key 44 functions as a locking element for regulating the rotational displacement of the wrap unit 22, in a state in which the wrap unit 22 is connected with respect to the first body 20.
    As shown in figures 3 to 5 and 7, the filter unit 24 includes a cylindrical filter element 80, the baffle 82 that holds the filter element 80, and a baffle plate 84 that is installed at one end of the baffle 82. The filter element 80 is formed like a cylinder in which fibers, for example, of polypropylene, polyethylene or the like, are rolled up having a predetermined thickness in the radial direction.
    The baffle 82 is equipped with a disc-shaped main body 86, and a retaining element 88 formed in a lower part of the main body 86 and which is capable of holding the baffle plate 84. A through hole 90 penetrates through a part substantially central of the main body 86 and multiple fins 91 are formed on the outer circumferential face of the through hole 90. The fins 91 are separated at mutually equal intervals along the circumferential direction of the baffle 82, and are formed to be inclined at an angle predetermined with respect to the axial direction of the deflector 82.
    In addition, a third seal ring 92 made of an elastic material is mounted on an outer circumferential face of the through hole 90 in the main body 86. The third seal ring 92 is in contact with an inner circumferential surface of the second communication passage 32, in a condition in which the filter unit 24 is installed on the first body 20 together with the wrap unit 22. As a result, the leakage of pressure fluid between the filter unit 24 and the second communication passage 32 is prevented.
    In addition, multiple (for example, four) guiding walls (second locking elements) 94 are formed in the main body 86, which project downwards (in the direction of arrow B) on an outer edge part that defines the circumferential face outer fins 91. Guiding walls 94 are separated at mutually equal intervals along the circumferential direction of the main body 86, and are separated by a predetermined interval in the radial direction with respect to the outer edge part. In addition, the lower ends of the guide walls 94 are L-shaped in cross section, and are folded in a radial inward direction.
    In addition, if the filter unit 24 is mounted in relation to the wrap unit 22, the hooks 64 of the inner wrap 42 are inserted in the inner circumferential faces of the guide walls 94, whereby the lower ends of the guide walls 94 and the ends hooks 64 overlap each other in the radial direction (see figure 4). As a result, the displacement in the axial direction (the direction of the arrows A and B) of the inner shell 42 and the filter unit 24 including the baffle 82 is regulated. Consequently, the filtering unit 24 is connected in a state of being accommodated within the wrapping unit 22.
    On the other hand, a filter groove 96 into which the upper end of the filter element 80 is inserted is constructed in an annular form on a lower surface of the main body 86.
    The retaining element 88 is constructed in a cylindrical shape and is connected with respect to the main body 86, together with being disposed at a predetermined distance from the main body 86 in the axial direction (the direction of the arrow B). Furthermore, a pair of pins 98 protrudes from an outer circumferential face on the retaining element 88, and by inserting the pins 98 into the slots 100, of the baffle plate 84 described later, the baffle plate 84 is connected with respect to the element retaining element 88. Additionally, the cylindrically shaped filter element 80 is inserted on an outer circumferential face of the retaining element 88.
    The baffle plate 84 includes a disk-shaped base 102, a connector 104 formed on an upper part of the base 102 and connected to the retaining element 88 of the baffle 82, and a skirt 106 formed on a lower part of the base 102. The base 102 is constructed in a substantially flat shape, and a lower end surface of the filter element 80 is in contact and retained by the upper surface of the base 102. Connector 104 is constructed with a conical shape in cross section, gradually tapering in an upward direction. . The pair of slots 100 extends in a circumferential direction along a wall surface of connector 104.
    Furthermore, under a condition in which the retainer element 88 of the deflector 82 is inserted into the filter element 80, after the retainer element 88 has been inserted into the connector 104 and the pins 98 have been inserted into the slots 100 respectively, the element retainer 88 and baffle 84 are rotated circumferentially at a predetermined angle in opposite directions. Consequently, the pins 98 are moved to the ends of the grooves 100 and are engaged with them. As a result, the relative displacement in the axial direction (the direction of arrows A and B) between the deflector 82 and the deflector plate 84 is regulated, and the deflector plate 84 is connected with respect to the retaining element 88 in a state in which the filter element 80 is retained between the baffle 82 and the baffle plate 84.
    As shown in figures 1 and 2, regulator 14 comprises a second body 108, a manipulator 110 rotatably arranged in a lower part of the second body 108 and an adjustment mechanism (not shown), which is capable of adjusting the fluid of pressure when operating manipulator 110. A pair of ports (not shown) for supplying and discharging a pressure fluid is formed laterally, that is, on the respective sides, of the second body 108. One of the ports is communicatively connected with the second port 28 of the filtering apparatus 12 to which pressure fluid from the filtering apparatus 12 is supplied, and the other of the ports is communicatively connected with a third port 122 (described later) of the lubricator 16 through which the pressure fluid is discharged.
    In addition, the pairs of the locking projections 112a, 112b are arranged on lateral surfaces of the second body 108, in relation to each other on external edges of end surfaces on which the pair of doors is provided. In a state in which the locking projections 112a of the end surface which is connected with the second port 28 of the filtering device 12 are in contact with the locking projections 34b of the adjacent filtering device 12, the locking projections 34b, 112a they are connected together by the installation of the connector 18a in order to cover the external sides of the socket projections 34b, 112a. At this time, the second port 28 of the filtering device 12 and one of the ports on the regulator 14 are connected in a communication state.
    Regulator 14 is equipped with the pressure adjustment mechanism inside it. The pressure adjustment mechanism is operated by the rotation of the manipulator 110, in such a way that after the pressure of the pressure fluid supplied by one port has been adjusted to a desired pressure, the pressure fluid is discharged through the other port and supplied to the lubricator 16.
    Lubricator 16 is used for the purpose of causing lubricating oil to be dripped into the pressure fluid, and so that when using the pressure fluid flow it supplies the lubricating oil to slidable parts in other fluid pressure devices. As shown in figures 1, 2, 9 and 10, the lubricator 16 includes a third body 114, a wrap unit 116 connected to a lower part of the third body 114, a drip element 118 which is inserted into the third body 114 and a fastener 120 for securing the drip element 118 with respect to the third body 114.
    The third and fourth ports 122, 124 for supplying and discharging the pressure fluid are disposed laterally, that is, on respective sides of the third body 114. The third port 122 and the fourth port 124 communicate with each other through a third passage of communication 126. The third port 122 is connected to another port on regulator 14, which is disposed adjacent to it, and the fourth port 124 is connected to a pipe not shown.
    In addition, the pairs of locking projections 128a, 128b, which are mutually opposite on the outer edges of end surfaces on which the third and fourth ports 122, 124 are provided, are arranged on the side surfaces of the third body 114. Under one condition in which the groove projections 128a on the end surface of the lubricator 16 facing the regulator 14 are in contact with the groove projections 112b of the regulator 14, the groove projections 112b, 128a are mutually connected by the installation of connector 18b a in order to cover the outer sides of the socket projections 112b, 128a. At this time, the third port 122 of the lubricator 16 is connected in a state of communication with the other port on the regulator 14.
    In addition, an installation hole 130 into which the wrap unit 116 is inserted opens at a lower part of the third body 114. As shown in Figure 9, multiple support elements 132 projecting radially inward are formed on a surface inner circumferential of the installation hole 130. The projections 58 of an inner wrap 138 and the retaining walls 56 of an outer wrap 136 fit with the support elements 132. Wrap unit 116 contains inner wrap 138 and outer wrap 136 The support elements 132 are arranged to be separated at mutually equal intervals along the circumferential direction of the installation hole 130.
    In addition, a bypass passage 134 that extends towards the side of the third port 122 (in the direction of arrow A) is formed in the installation hole 130. A portion of the pressure fluid supplied to the third port 122 is provided, by means of from the bypass passage 134, into the casing unit 116 which is mounted in the installation hole 130.
    Wrap unit 116 includes outer wrap 136 formed as a cylinder with a bottom, inner wrap 138 inserted in outer wrap 136, and a release key 140 that is movable with respect to outer wrap 136.
    Construction of the wrap unit 116 is approximately the same as that of the wrap unit 22 of the filter apparatus 12 described earlier. Thus, the same reference numbers are applied to the same component elements, and detailed descriptions of such resources are omitted.
    The outer shell 136 is formed with a substantially constant diameter and a predetermined length in the axial direction of a light-permeable transparent resin material (acrylic, polycarbonate, etc.). A bottom part of the outer wrap 136 is constructed in a hemispherical shape, and the upper end of the outer wrap 136 opens upwards. A pair of connecting tabs 48a, 48b projecting upwards (in the direction of arrow A) in the axial direction is formed in an upper part of the outer casing 136, and an opening for key 50 in which the release key 140 described more later it is assembled and formed in a position located between one of the connecting tabs 48a and the other of the connecting tabs 48b.
    In addition, a plurality of the retaining walls 56, which gradually expand in diameter in a radially outward direction, is formed in an upper part of the outer envelope 136. The retaining walls 56 are mutually separated at substantially equal intervals along the circumferential direction of the outer wrap 136, such that the projections 58 are capable of being retained by the retaining walls 56 if the inner wrap 138 is accommodated within the outer wrap 136.
    The inner wrap 138, similar to the outer wrap 136, is formed with a substantially constant diameter, for example, of a transparent resin material permeable to light (polycarbonate or the like) and extends for a predetermined length in the axial direction. A bottom part of the inner casing 138 is constructed in a hemispherical shape, and the upper end of it opens upwards. The interior of the inner casing 138 is filled with lubricating oil by means of an oil supply element 142 (see figures 1 and 2), which is provided in the third body 114.
    Additionally, a plurality of projections 58, which project radially outwardly from the outer circumferential surface of the same, are formed in an upper part of the inner envelope 138, the projections 58 being arranged in substantially mutually equal intervals along the circumferential direction of the inner envelope 138. The inclined surfaces of the projections 58 are in contact and are retained respectively by the retaining walls 56 if the inner envelope 138 is accommodated within the outer envelope 136.
    Additionally, between two adjacent projections 58, a pair of projections 52 is provided, which project outward at a predetermined height with respect to the outer circumferential surface of the inner envelope 138. If the inner envelope 138 is mounted with respect to the outer envelope 136 , the projections 52, which are realized with substantially rectangular shapes in cross section, fit within the holes 54 of the connecting tabs 48a, 48b. As a result, the outer wrap 136 and the inner wrap 138 are strongly connected together.
    In addition, an annular wall 62, which is reduced in diameter in a direction radially inward with respect to the outer circumferential surface of the inner wrap 138, is formed in an upper part of the inner wrap 138. A plurality of hooks 64, which protruding from the upper part of it, it is arranged on the annular wall 62, and together with this a first sealing ring 66 made of an elastic material is installed on an external circumferential face of the annular wall 62.
    The release key 140 consists of a block that is L-shaped in cross section, which is installed in the opening for key 50, in such a way that a projecting region of the same is positioned on an external side of the external envelope 136 and on a lower side of the release button 140 (in the direction of arrow B). The release key 140 is arranged to move in the up and down directions (the directions of arrows A and B) along the opening for key 50, with a spring 76 being placed between the release key 140 and a surface of lower end of the opening for key 50. Thus, the release key 140 is normally in a state of being predisposed upwards in the outer envelope 136 (in the direction of arrow A).
    Additionally, if the wrap unit 116 is installed with respect to the installation hole 130 of the third body 114, the upper end of the release key 140 is inserted in a recess 78 that is formed in the installation hole 130 of the third body 114. In because of this, the displacement in a direction of rotation of the wrap unit 116 with respect to the third body 114 is regulated. Otherwise reported, the release key 140 functions as a locking element for regulating the rotational displacement of the wrap unit 116, in a state in which the wrap unit 116 is connected with respect to the third body 114.
    As shown in figure 9, the drip element 118 comprises an inner element 144 which is inserted into the third body 114, and a drip component 146 which is provided in an upper part of the inner element 144. The inner element 144 is inserted a in order to penetrate through the third communication passage 126.
    The inner element 144 includes a fourth communication passage 148 that penetrates through it horizontally. The fourth communication passage 148 is arranged in a straight line together with the third communication passage 126. More specifically, the pressure fluid that is supplied to the third port 122 passes through the third and fourth communication passages 126, 148 and flows into the fourth port 124.
    In addition, a damper 150 made of an elastic material and which is arranged in a standing mode perpendicular to the extension direction of the fourth communication passage 148 is arranged in the fourth communication passage 148. The buffer 150 is arranged in order to be tiltable by a predetermined angle towards the side of the fourth port 124 corresponding to the amount of pressure fluid flow that is provided through the third port 122.
    A reservoir 152 through which the lubricating oil is supplied by the inner casing 138 is formed above the fourth communication passage 148 in the inner element 144. The reservoir 152 communicates with an oil passage 154 that extends downwards, and lubricating oil it is provided through oil passage 154. A drip opening 156 that communicates with the fourth communication passage 148 opens downwards in a substantially central part of the reservoir 152. The oil passage 154 is perpendicular to the fourth communication passage 148, extends through it while being separated from the fourth communication passage 148, and communicates with an oil supply port 158 which is formed in the fastener 120.
    The fastener 120 is installed in a lower part of the inner element 144 that constitutes the drip element 118, and retains a part of the damper 150 placed between the inner element 144 and the fastener 120. The fastener 120 comprises the oil supply port 158 which communicates with the oil passage 154. The oil supply port 158 projects downwards (in the direction of arrow B), and is arranged inside the inner casing 138. An oil guide tube 160 is connected to the oil port oil supply 158.
    The oil guide tube 160 has a predetermined length along the axial direction (the direction of arrows A and B), and in a state connected to the oil supply port 158 extends to the vicinity of a bottom part of the casing internal 138. Additionally, a removal filter 162 for removing debris or the like that may be contained in the lubricating oil is disposed at a lower end of the oil guide tube 160.
    Furthermore, the lubricating oil that fills the inner casing 138, after passing through the oil guide tube 160 and flowing to the side of the fastener 120, passes through the oil passage 154 and is supplied to the reservoir 152. The lubricating oil passes through the drip opening 156 of reservoir 152 and is dripped for the fourth pass of
    communication 148. As a result, a predetermined amount of lubricating oil is mixed with the pressure fluid flowing through the fourth communication passage 148. A check valve 164 to prevent reverse flow of the lubricating oil to one side of the inner casing 138 the oil passage 154 is arranged on the oil supply port 158.
    The fluid pressure unit 10 including the filter apparatus 12, to which a wrap structure 10 according to the first embodiment of the present invention is applied, is constructed basically as described above. The following explanations will be given in relation to the assembly of the filtering apparatus 12 and the lubricator 16. First, the assembly of the filtering apparatus 12 must be explained with reference to figures 4 to 6. In the following explanations, it is assumed that the filter unit 24 is in a pre-assembled condition, that is, in which the filter element 80, the baffle 82 and the baffle plate 84 are already assembled together (see figure 20 5).
    First, the wrap unit 22 is assembled. In this case, in the condition shown in figure 6, the inner shell 42 is inserted from above into the open outer shell 40, and the lower parts of these are placed in close proximity, whereby the drain boss 68 is inserted into the boss hole 60. At the same time, the connecting tabs 48a, 48b of the outer envelope 40 are positioned to confront the projections 52 of the inner envelope 42, and the projections 52 are inserted into the holes 54.
    Consequently, the holes 54 of the connecting tabs 48a, 48b and the projections 52 become engaged, whereby the outer envelope 40 and the inner envelope 42 are mutually connected together in such a way that the inner envelope 42 is accommodated within the 5 external envelope 40.
    On this occasion, the outer envelope 40 and the inner envelope 42 are connected in such a way that the relative displacement in both axial (the direction of arrows A and B) and circumferential is regulated.
    Additionally, the retaining walls 56 of the outer shell 40 are in contact with the lower end surfaces respectively in the projections 58 of the inner shell 42 (see figure 4).
    Furthermore, after the drain cock 46 has been inserted from below with respect to the boss hole 60 of the outer casing 40, the drain cock 46 is attached by the fixing element 72, and assembly of the wrap unit 22 is completed by installing the first seal ring 66 on the outer circumferential face of the annular wall 62 of the inner envelope 42 (see figures 3 and 5).
    Next, from the condition shown in figure 5, the filter unit 24 is inserted into the wrap unit 22 in such a way that the main body 86 of the baffle 82 25 is positioned upwards, and the hooks 64 of the inner wrap 42 are arranged in positions between the guiding walls 94 of the main body 86. In addition, by rotating the filter unit 24 by a predetermined angle around its geometric axis with respect to the wrapper unit 22, the hooks 64 are positioned to confront the guiding walls 94 and are moved to positions on inner circumferential faces of the guiding walls 94. More specifically, the various hooks 64 are placed in a state where they are covered respectively by the guiding walls 94.
    Consequently, the upper ends of the hooks 64 are placed in a state of overlap in a radial direction with lower ends of the guiding walls 94, whereby the displacement in the axial direction (the direction of the arrows A and B) between the inner envelope 42 and the filter unit 24 including the baffle 82 is regulated. As a result, the filter unit 24 is mutually connected together with the wrap unit 22, with the filter unit 24 being accommodated within the wrap unit 22.
    Finally, with its opening facing upwards, the wrapping unit 22, within which the filtering unit 24 is mounted, is inserted into the installation hole 36 of the first body 20, and the wrapping unit 22 is rotated at a predetermined angle around its geometric axis with respect to the first body 20. As a result, the projections 58 and the retaining walls 56 are superimposed in the axial direction (the direction of the arrows A and B) with the support elements 38, and the projections 58 and the retaining walls 56 are positioned to fit with the supporting elements 38. At this time, the retaining walls 56, which are in contact with the lower parts of the projections 58, are also in contact with the elements support 38.
    In addition, at the same time, as shown in figure 8A, the release button 44 is moved upwards (in the direction of arrow A) by the elastic force of the spring 76 and is inserted into the recess 78 of the installation hole 36. As a result of this , in a state where it is inserted in the installation hole 36 of the first body 20, the wrap unit 22 is retained by the support elements 38 and is prevented from moving downwards (in the direction of arrow B), together with movement of the wrap 22 in a direction of rotation (that is, in the direction of arrow C in figure 3) being regulated by the release key 44. More specifically, because the rotation of the wrap unit 22 with respect to the first body 20 is regulated by release key 44, the state of engagement with the support elements 38 cannot be released.
    As a result, the wrapping unit 22 within which the filtering unit 24 is accommodated is placed in a state of being connected to the bottom of the first body 20, whereby the assembly of the filtering device 12 is completed (see figure 4). At this time, as shown in figure 4, the first communication passage 30 and the fins 91 of the deflector 82 face and communicate with each other, and the second communication passage 32 communicates with the through hole 90. Additionally, the first seal ring 66 is in contact with the inner circumferential surface of the installation hole 36, and the third seal ring 92 is in contact with the inner circumferential surface of the second communication passage 32.
    As shown in figure 8B, if the wrapping unit 22 has to be removed from the first body 20, the release key 44 is pressed down against the elastic force of the spring 76, whereby the release key 44 is detached from the recess 78. As a result, the condition in which the rotational displacement of the wrap unit is prevented is released. Then, if the wrap unit 22 is rotated by a predetermined angle, after the projections 58 and the retaining walls 56 are released from the socket with the support elements 38, the wrap unit 22 is moved in one direction (the direction of arrow B) in order to be separated from the first body 20.
    In the following, explanations will be given relating to the advantageous operations and effects of the fluid pressure unit 10 including the filtering apparatus 12, which is mounted in the manner indicated above. It will be assumed that pipes not shown have been connected in advance to the first port 26 of the filtering apparatus 12 and to the fourth port 124 of the lubricator 16.
    First, the pressure fluid is supplied via a tube from a non-illustrated pressure fluid supply source to the first port 26 of the filtration device 12. After the pressure fluid has flowed to the first communication passage 30 from the first port 26 of the filtering apparatus 12, the pressure fluid is guided into the inner shell 42 as it passes through the fins 91 of the baffle 82. At this point, when it passes through the multiple fins 91, the pressure fluid is guided to the interior of the inner shell 42 while being rotated in a circumferential direction around the geometric axis of the inner shell 42. Because of this, because of the centrifugal force caused by such rotation, moisture and others more contained in the pressure fluid are radially separated outwards and move in the direction of the inner circumferential face of the inner envelope 42.
    In addition, such moisture and others more separated, after having moved downwards (in the direction of the arrow B) along the inner circumferential wall of the inner envelope 42, accumulate in the bottom part of the inner envelope 42 and are drained from it. When opening the drain tap 46, moisture and others to be drained can be discharged to the outside of the inner envelope 42.
    On the other hand, as a result of the pressure fluid from which moisture and others have been separated passing from the outer circumferential face of the filter element 80 and towards the inner circumferential face, dust, particulates and others more contained in the pressure fluid are removed. Then, the pressure fluid, after being lifted into the filter element 80 and guided through the through hole 90 to the second communication passage 32, is discharged as a clean pressure fluid through the second port 28.
    In the filtering apparatus 12, because the outer wrapper 40 and the inner wrapper 42 that make up the wrapper unit 22 are made of a transparent resin material, which is permeable to light, the amount of moisture to be drained, the which is collected inside the filtering apparatus 12, and the dust and others more attached to the filtering element 80 can be easily confirmed from the outside of the filtering apparatus 12.
    The pressure fluid, from which moisture, dust and others were removed by the filtering device 12, is supplied through the second port 28 of the filtering device 12 to the port (not shown) of the regulator 14, which is integrally connected to the device filter 12 through connector 18a. After being set to a preset pressure value by the manipulator 110, the adjusted pressure fluid is supplied via the other port of the same to the lubricator 16, which is integrally connected to the regulator 14 by the connector 18b.
    Simultaneously with the adjusted pressure fluid being supplied by the third port 122 of the lubricator 16 and flowing to the side of the fourth port 124 through the third and fourth communication passages 126, 148, a part of the pressure fluid passes through the bypass passage 134 communicates with the third port 122 and is supplied inside the inner casing 138. At this moment, through the buffer 150, when compared to the pressure fluid pressure flowing directly to the fourth port 124 coming from the third port 122, the pressure of the pressure fluid that passes through the bypass passage 134 and is guided into the inner casing 138 is increased.
    As a result, the lubricating oil is pressed by the pressure fluid supplied to the bottom of the inner casing 138 and, after passing through the oil guide tube 160 and flowing to the side of the fastener 120 (in the direction of arrow A), the lubricating oil it passes through the oil passage 154 and is supplied to the reservoir 152. The oil then passes through the drip opening 156 and is dripped into the fourth communication passage 148. Consequently, if the pressure fluid passes through the interior of the fourth communication passage 148 , a predetermined amount of lubricating oil is mixed with the pressure fluid, and then the pressure fluid is supplied through the fourth port 124 and via a tube to other fluid pressure devices for which lubrication is required.
    Because the outer wrap 136 and the inner wrap 138 that make up wrap unit 116 are made of a transparent resin material, which is permeable to light, the amount of lubricating oil accumulated inside the lubricator 16 can be easily confirmed outside.
    In the mode indicated above, according to the first embodiment, the multiple guiding walls 94 are provided in the deflector 82 of the filtering apparatus 12, such that, after the filtering unit 24 including the deflector 82 has been inserted into the filtering unit wrap 22, and the hooks 64 of the inner wrap 42 have been arranged in positions between the guide walls 94 of the main body 86, by rotating the filter unit 24 by a predetermined angle with respect to the wrap unit 22, the hooks 64 are displaced to positions on the inner circumferential face of the guide walls 94, and a condition can be produced in which upper ends of the hooks 64 and lower ends of the guide walls 94 overlap each other in the radial direction.
    More specifically, by engaging the hooks 64 with the guide walls 94 in the axial direction (the direction of the arrows A and B) of the wrapping unit 22 and the filtering unit 24, the displacement of the inner wrapping 42 and the filtering unit 24 including deflector 82 is regulated. Consequently, after the filter unit 24 has been accommodated within the wrap unit 22, by means of relative rotational displacement between them, the filter unit 24 can be connected with respect to the wrap unit 22 easily and safely.
    Additionally, because a structure is provided in which the filter unit 24 is not accommodated within the first body 20, but is instead accommodated within the wrap unit 22 and connected to it, which is connected to a lower part of the first body 20, merely by removing the wrapping unit 22 from the first body 20 the filtering unit 24 can be removed simultaneously therewith. As a result, when compared to the conventional filtering apparatus in which a filter element is installed inside the main body (first body), the fixing and detaching operations are extremely simple. In addition, with the present invention, even in the case where the filtering device is installed together with tubes (not shown) in a high location or in a low location, when separating and moving the wrap unit 22 it is not necessary to perform operations to exchanging or replacing the filter unit 24 in such high or low locations, and replacement operations can be easily performed.
    In addition, when the filter unit 24 is mounted with respect to the first body 20, after the filter unit 24 has been accommodated within the wrap unit 22 in advance, the connection of the wrap unit 22 with the bottom of the first body 20 can be completed. Therefore, even if the first body 20 is installed together with tubes in a high location or in a low location, assembly operations for the filter unit 24 can be easily performed.
    In addition, because the filter unit 24 is accommodated inside the wrapping unit 22, when compared to the filtering apparatus according to conventional technique, when the wrapping unit 22 and the filtering unit 24 are attached to the first body 20 or separated from it, the amount of movement by which the wrapping unit 22 and the filtering unit 24 are displaced in the axial direction (the direction of arrows A and B) is small, so that fastening and disengaging operations are easy to execute, and are appropriate to be executed in a reduced space or something.
    The wrap units 22, 116 that make up the filter apparatus 12 and the lubricator 16 are not limited to be formed of transparent resin materials permeable to light. For example, wrap units 22, 116 may be formed of pressure-resistant glass, or instead of transparent materials, they may be formed of semitransparent materials. More specifically, the outer wraps 40, 136 and the inner wraps 42, 138 constituting the wrap units 22, 116 can be made of any materials that are capable of withstanding the pressure applied to them, and that enable the interior of the same to be visually confirmed from the outside.
    In the following, a fluid pressure unit 200, including a filtration apparatus according to a second embodiment, is shown in figures 11 to 13. The component elements, which are the same as those of the fluid pressure unit 10 according to the first modality mentioned above, are designated by the same reference numbers, and detailed explanations of such elements are omitted.
    In the fluid pressure unit 200 according to the second embodiment, the fluid pressure devices therein differ from the fluid pressure devices of the first embodiment, in which a filter regulator 202 is provided in which a filter for removing dust , particulates and others more contained in the pressure fluid and a regulator to reduce the pressure of the pressure fluid are integrally arranged together.
    As shown in figures 11 to 13, the fluid pressure unit 200 consists of filter-regulator 202, a lubricator 16 connected to filter-regulator 202 to mix a lubricating oil with respect to the pressure fluid and a connector 18a through which the filter regulator 202 and the lubricator 16 are mutually connected. The aforementioned filter-regulator 202 and lubricator 16 function as fluid pressure devices for which a pressure fluid is supplied to internal parts thereof.
    With respect to the lubricator 16, since its structure is the same as that of the lubricator 16 in the fluid pressure unit 10 according to the first embodiment described above, detailed explanations of it are omitted.
    The filter regulator 202 includes a body 204, a wrap unit 206 connected to a lower part of the body 204, a filter unit 208 installed inside the wrap unit 206, a cover 210 connected to an upper part of the body 204, an adjustment mechanism 212 disposed within the cap 210 and a manipulator 214 rotatably disposed in an upper part 10 of the cap 210.
    The body 204 comprises the fifth and sixth ports 216, 218 through which the pressure fluid is supplied and discharged, a fifth communication passage 220 communicating with the fifth port 216, and a sixth communication passage 222 communicating with the sixth port 218.
    The wrap unit 206 includes an outer wrap (first wrap part) 224 formed as a cylinder with a bottom, an inner wrap (second wrap part) 226 that is inserted into the outer wrap 224, 20 a release key 228 arranged for displacement with respect to the outer casing 224, and a drain cock 230 disposed on the bottom parts of the outer casing 224 and the inner casing 226.
    The structure of the wrapping unit 206 and the filtering unit 25 is the same as that of the filtering apparatus 12 according to the first embodiment described above and, therefore, the detailed explanation of such features is omitted.
    The cover 210 is constructed in a cylindrical shape and is connected to an upper part of the body 204, fitting with a diaphragm 232 that constitutes the adjustment mechanism 212. Additionally, the manipulator 214 is rotatably arranged by means of a rotating axis 234 in an upper part of the cover 210. A spring 240 is installed by means of a spring support 5 238 between the rotating shaft 234 and a disc element 236, which are parts of the adjustment mechanism 212.
    In addition, when rotating the manipulator 214, the rotary axis 234 is rotated integrally with it, accompanied by the spring support 238, which is fitted by means of threads with the rotary axis 234, being moved along the axial direction ( in the direction of arrows A and B) whereby spring 240 is compressed, for example, by means of spring support 238, and a compression force of spring 240 is applied to diaphragm 232.
    Adjustment mechanism 212 includes diaphragm 232 in the form of a thin membrane having elasticity and placed between the body 204 and the cap 210, a retaining element 242 that retains a central part of the diaphragm 232, the spring support 238, the which is disposed above the retaining element 242 while the diaphragm 232 is disposed between the retaining element 242 and the spring support 238, and an axis 244 provided in a lower part of the retaining element 242.
    A diaphragm chamber 246 is formed in a lower part of diaphragm 232 between diaphragm 232 and body 204. Diaphragm chamber 246 communicates via a pilot passage 248 with the sixth communication passage 222.
    Additionally, at a lower end of the shaft 244, a shaft support 250, which is disposed between the main body 86 of the deflector 82 and the retaining element 88, is in contact with them, and a return spring 252 is placed between the shaft support 250 and the retaining element 88. By the elastic force of the return spring 252, the shaft 244 is propelled upwards (in the direction of arrow A) by means of the shaft support 250, while the upper end of the axis 244 is in contact with a central part of the retaining element 242.
    In the following explanations will be given relating to the advantageous operations and effects of the fluid pressure unit 200 according to the second embodiment. It is assumed that a desired pressure was set in advance when operating manipulator 214.
    First, the pressure fluid is supplied from a non-illustrated pressure fluid supply source to the fifth port 216 of the body 204. The pressure fluid flows into the inner envelope 226 as it passes through the fifth communication passage 220, and it is guided downwards while being rotated when passing between the fins 91 of the deflector 82. On this occasion, moisture and others more contained in the pressure fluid are properly separated because of the centrifugal force caused by such rotation, and the pressure fluid moves towards the inner circumferential face of the inner envelope 226.
    Additionally, the separated moisture, after moving downwards along the inner circumferential surface of the inner wrap 226, accumulates as moisture to be drained at the bottom of the inner wrap 226. When opening the drain cock 230, the moisture to be drained can be discharged to the outside of the inner wrap 226.
    On the other hand, the pressure fluid, from which moisture and others have been separated, passes to the inner circumferential face from the outer circumferential face of the filter element 80, where dust, particulates and others more contained in the pressure fluid are removed properly, and then the pressure fluid rises within the filter element 80 and flows into the sixth communication passage 222. Because the outer wrap 224 and the inner wrap 226 that make up the wrap unit 206 are formed a transparent resin material permeable to light, the moisture to be drained, which has accumulated at the bottom of it, as well as dust and others, can be seen visually from the outside.
    In addition, at the same time, because of a difference between a compressive force applied to diaphragm 232 by spring 240 and the pressure acting on diaphragm 232 by the pressure fluid within diaphragm chamber 246, axis 244 is displaced in the axial direction (the direction of arrows A and B), so the pressure fluid is adjusted to a desired pressure. Furthermore, after moisture and dust, etc., have been removed from it, and after being set to a predetermined pressure, the pressure fluid is supplied via the sixth port 218 to the adjacent lubricator 16.
    The pressure fluid supplied to the lubricator 16, after a predetermined amount of lubricating oil has been dripped and mixed with it inside the lubricator 16, is supplied to other fluid pressure devices for which lubrication is required.
    In the previously indicated mode, according to the second embodiment, multiple guiding walls 94 are provided in the baffle 82 which constitutes the filtering unit 208 of the filter-regulator 202, such that after the filtering unit 208 including the baffle 82 has inserted in the wrapper unit 206, and the hooks 64 of the inner wrapper 226 have been arranged in positions between the guide walls 94 of the main body 86, by means of a simple operation of rotating the filtering unit 208 by a predetermined angle with In relation to the wrap unit 206, upper ends of the hooks 64 and lower ends of the guide walls 94 are positioned to overlap each other in the radial direction, and together with this the guide walls 94 and hooks 64 can be fitted in the axial direction (the direction of arrows A and B) of the wrapping unit 206 and the filtering unit 208. As a result, displacement in the axial direction of the joint wrapper 206 and filter unit 208 including deflector 82 is regulated, and filter unit 208 can be connected securely in a state of being accommodated inside the wrapper unit 206.
    Additionally, because a structure is provided in which the filter unit 208 is not accommodated in the body 204, but is instead accommodated within the wrap unit 206 and connected to it, which is connected to a lower part of the body 204, merely by removing the wrapping unit 206 from the body 204 the filtering unit 208 can be removed simultaneously with it.
    As a result, when compared to the conventional filtering apparatus in which a filter element is installed in the main body (first body), the fixing and detaching operations are extremely simple. In addition, with the present invention, even in the case where the body 204 is installed together with tubes (not shown) at a high location or at a low location, when separating and moving the wrap unit 206, it is not necessary to perform operations to change or replace the filter unit 208 in such high or low locations, and replacement operations can be easily performed.
    In addition, when the filtering unit 208 is mounted with respect to the body 204, after the filtering unit 208 has been accommodated within the wrapper unit 206 in advance, the connection of the wrapper unit 206 to the bottom of the body 204 can be completed. Therefore, even if the body 204 is installed together with pipes in a high location or in a low location, the assembly operations for the filter unit 208 can be easily performed.
    In addition, because the filtering unit 208 is accommodated inside the wrapping unit 206, compared to the filtering apparatus 25 according to conventional technique, when the wrapping unit 206 and the filtering unit 208 are fixed to or separated from the body 204, the amount of movement by which the wrapping unit 206 and the filtering unit 208 are displaced in the axial direction (the direction of arrows A 30 and B) is small, so fastening and disengaging operations are easy to execute, and are appropriate to be executed in a reduced space or something.
    The filtration apparatus according to the present invention is not limited to the modalities described 5 above, and it is a logical thing that several additional or modified structures can be adopted in it without departing from the essence of the invention as set out in the appended claims.
    权利要求:
    Claims (4)
    [0001]
    1. Filtering apparatus, characterized by the fact that it comprises: a body (20, 204) having ports through which a pressure fluid is supplied and discharged; a casing (22, 206) in the form of a cylinder with a bottom, which is fixable and separable with respect to the body (20, 204), and in which an interior of the casing (22, 206) communicates with the doors; a filter unit (24) accommodated inside the wrap (22, 206), the filter unit (24) having a filter element (80) to remove dust, particulates and others more contained in the pressure fluid, and a fastener ( 82) to retain the filter element (80); and a connection mechanism for connecting the wrap (22, 206) and the filtering unit (24), wherein the connection mechanism allows limited relative relative displacement in an axial direction between the wrap (22, 206) and the filter unit filtration (24). wherein the connecting mechanism comprises: a plurality of guide walls (94) extending axially from the fastener (82) respectively in mutually separate positions in a circumferential direction, each of the guide walls (94) extending in the axial direction and having an end that ends in a radially extending portion that extends radially into the envelope (22, 206); and a plurality of hooks (64) provided in the wrapper respectively in mutually separate positions in a circumferential direction, the hooks extending radially outwardly towards the guiding walls (94), wherein the parts extending radially from the guiding walls and the hooks overlap each other in the radial direction, where the hooks (64) are configured to fit circumferentially between the guide walls (94), where the hooks (64) can be positioned radially within the guide walls fitting the hooks circumferentially between the guide walls (94) and relatively rotating the wrap (22, 206) and the filter unit (24) so that the hooks (64) confront the guide walls (94) and the radially overlapping parts and hooks limit the mutual relative displacement in the axial direction between the wrap and the filter unit (24).
    [0002]
    2. Filtering apparatus according to claim 1, characterized by the fact that the fastener (82) comprises: a disc-shaped main body (86); and a retaining element (88) formed at one end of the main body (86), and which is able to retain the filter element (80) therein, in which the second fitting element (94) is arranged in a circumferential part main body (86).
    [0003]
    Filtering apparatus according to claim 2, characterized in that the main body (86) is arranged in order to cover the open end of the wrap (22, 206).
    [0004]
    4. Filtering apparatus, according to claim 1, characterized by the fact that the wrap (22, 206) is transparent to enable visual confirmation of its interior, and includes a first wrap part (40, 224) and a second wrap part 5 (42, 226) disposed in an interior of the first wrap part (40, 224), the hooks being arranged in the second wrap part (42, 226).
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    同族专利:
    公开号 | 公开日
    DE112011105227B4|2019-01-31|
    TWI546110B|2016-08-21|
    TW201244798A|2012-11-16|
    DE112011105227T5|2014-02-06|
    CN103534001B|2015-12-02|
    WO2012153431A9|2013-07-18|
    US20140083299A1|2014-03-27|
    WO2012153431A1|2012-11-15|
    US9272235B2|2016-03-01|
    RU2013149489A|2015-06-20|
    JP5765560B2|2015-08-19|
    BR112013028879B8|2021-02-17|
    RU2576273C2|2016-02-27|
    KR20140017638A|2014-02-11|
    KR101659991B1|2016-09-27|
    BR112013028879A2|2017-01-31|
    CN103534001A|2014-01-22|
    JP2012232281A|2012-11-29|
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    法律状态:
    2018-04-10| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-06-18| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|
    2020-04-07| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-11-03| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 21/07/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    2021-02-17| B16C| Correction of notification of the grant [chapter 16.3 patent gazette]|Free format text: REF. RPI 2600 DE 03/11/2020 QUANTO AO INVENTOR. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2011-104627|2011-05-09|
    JP2011104627A|JP5765560B2|2011-05-09|2011-05-09|Filter device|
    PCT/JP2011/067180|WO2012153431A1|2011-05-09|2011-07-21|Filter apparatus|
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