• 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:
    A stand for a refining apparatus which minimizes the problem of non-alignment of the refining gaps disclosed. The stand comprises a support beam structure adapted to transfer axial forces from the bearing unit, during operation of the refining apparatus, essentially from a longitudinal midsection of the intermediate member at the rear end (7) of the stand essentially horizontally towards the front end (6) of the stand and thereby distributes the axial forces in an optimal manner through the stand.
    公开号:SE1151140A1
    申请号:SE1151140
    申请日:2011-11-30
    公开日:2013-05-31
    发明作者:Stefan Mellander；Jonas Lundberg
    申请人:Metso Paper Sweden Ab；
    IPC主号:
    专利说明:

    For example, should the refinery surfaces come into contact with each other, there is a risk of breakdown or at least wear of the refiner surfaces, which leads to a considerably shortened operating time of the device before the refiner segments have to be replaced. Furthermore, the degree of alignment between the refinery surfaces is important for the resulting quality of the ground material. As the degree of alignment between the refiner surfaces decreases, the quality of the ground material deteriorates. Control of the refining gap and of the alignment between the refiner surfaces is thus of great importance.
    During operation, the refiner discs are subjected to a large axial force. This axial force can cause the refiner discs to tilt or tilt slightly relative to each other. More specifically, the axial force often causes the refining gap to become larger at the top and smaller at the lower part of the gap.
    The problem has hitherto been encountered with, for example, various devices for aligning the refiner disks, as described in WO-A1-2007 / 139 504, WO-A1-2007 / 139,505 and WO-A1-2007 / 094,711.
    It has now been realized that the design of the refiner stand to some extent contributes to the problem of the incorrect alignment of the refiner discs because the non-rotating disc tends not to move parallel to the rotor as a result of the stator mounting on the stand and how the forces are distributed in the stand . Therefore, there is a need for a new design of the stand.
    US 3 762 660 describes a stand which is said to solve the problem of the deformation of the stand during operation as a result of the axial forces to which the refiner discs are subjected. The stand comprises stands for storing bearing devices of the shafts of the discs. The brackets are connected to each other with a plurality of arms arranged both above and below the horizontal plane of the axes of the discs in order thereby to prevent the skew of the discs in relation to each other. Furthermore, the frame comprises lines for circulation of a heat-transferring fluid through the frame as well as means for keeping the fluid at a constant temperature in order to avoid deformation of the frame during operation. However, the proposed design of the stand is disadvantageous because it is space consuming and requires the presence of a circulating heat transfer unit.
    Another example of a stand for a refiner is described in US 3,166,260. The stand comprises, among other things, welded plates. Summary The object of the present invention is to minimize the problems associated with the axial forces applied to the stator during the operation of a refiner for refining and refining lignocellulosic material. More particularly, the object of the invention is to minimize the risk of incorrect alignment between the refiner surfaces, i.e. of the refining gap, during operation as a result of the axial forces. The alignment between the refiner surfaces is correct when the refining gap width is kept constant for each diameter for an entire revolution, regardless of the deflection of the stator itself in a horizontal plane. The object is achieved by means of the stand according to the independent claim 1 and the refining device according to claim 16. Preferred embodiments are defined by the dependent claims.
    The stand has a front end and an opposite rear end and comprises a first and a second side element, which side elements in turn each comprise a leg section and an arm section. The arm section is arranged to mount a stator, ie. a non-rotating refiner disc, thereby at the front end of the stand, preferably at an end surface of the arm section.
    The frame further comprises a first intermediate element having a first end connected to the first side element and a second end connected to the second side element. The first intermediate element comprises means arranged for mounting a bearing unit therewith, in which bearing unit a shaft of a rotor, i.e. a shaft for a rotating refiner disk, shall be provided. The stand may suitably also comprise a second intermediate element which extends between the side elements. The second intermediate element is arranged substantially in a vertical plane, preferably perpendicular to the horizontal axis of the rotor.
    The frame further comprises a support beam structure arranged to transmit axial forces from the bearing unit during the operation of the refining device, mainly from a longitudinal central section of the intermediate element at the rear end of the frame, preferably substantially horizontally towards the front end of the frame. This ensures that the axial forces are distributed in the frame in a suitable manner. Thereby it is possible to keep the desired alignment of the refiner surfaces during the operation of the refiner. In accordance with an embodiment of the invention, the support beam construction comprises a first support element extending from an area in the vicinity of the member arranged for mounting a bearing unit in the first intermediate element at the rear end of the frame (preferably substantially from a longitudinal central section of the frame). the first intermediate member) to the first side member. In addition, the first support element has a longitudinal extent which is longer than the distance along the first intermediate element, in the direction of the longitudinal extension of the first intermediate element, between the connection point of the first support element with the intermediate element and the first side element. The support beam structure further comprises a second support element extending from an area in the vicinity of the member arranged for mounting a bearing unit for the first intermediate element at the rear of the frame (preferably substantially from a longitudinal central section of the first intermediate element). to the second side member. Like the first support member, the second support member has a longitudinal extent which is longer than the distance along the first intermediate member, in the direction of the longitudinal extent of the first intermediate member, between a connection point with the intermediate member and the side member. The first and second support elements thus preferably extend at the central rear section of the frame towards the sides in the forward direction of the frame.
    The longitudinal extent of the support elements can be substantially straight or be curved or arcuate.
    In accordance with a preferred embodiment, the first and second support elements together form a first support beam. The first support beam extends between the first and second side elements and is arranged such that its center of gravity cross-section is located in a first horizontal plane arranged at a distance from the horizontal axis of the axis of the rotor. The first horizontal plane is preferably located between the ground surface and the horizontal axis of the rotor axis. The first support beam is arcuate in the first horizontal plane, so that it is concave towards the front of the frame. The arrangement of the first support beam further ensures that the axial forces are distributed through the frame in an optimal way, so that their negative influence on the alignment of the refining gap is minimized. The fact that it is arcuate is advantageous because it has a beneficial effect on the transmission of the forces through the stand.
    In accordance with one embodiment, the frame further comprises a second support beam.
    The second support beam has its longitudinal extent substantially in a vertical plane along the horizontal axis of the rotor axis. In addition, the second support beam is substantially straight in its length extension. The second support beam may preferably be connected to the first support beam at a longitudinal central section of the first support beam. The second support beam provides stability of the frame where the bearings are mounted.
    In accordance with yet another embodiment, the frame further comprises a third support beam extending between the first and second side elements. The third support beam preferably has its center of gravity cross-section placed in the same horizontal plane as the first support beam. Just like the first support beam, the third support beam is arcuate in the horizontal plane, so that it is concave towards the front of the stand.
    A connection point for the first support beam with the first side element is preferably immediately close to a connection point for the third support beam with the first side element. Preferably, the arcuate shape of the third support beam has a larger radius than the radius of the arcuate shape of the first support beam.
    In accordance with yet another embodiment, the frame also comprises a fourth support beam arranged between the first and second side elements. The fourth support beam is arcuate in a horizontal plane, so that it is convex in the direction of the front of the frame. In addition, the center of gravity of the fourth support beam is preferably arranged in a second horizontal plane, which second horizontal plane is arranged at a distance from the horizontal plane in which the center of gravity of the center of the first support beam is arranged. The fourth support beam is suitably connected to the third support beam substantially at the middle of the longitudinal extent of the first support beam.
    According to yet another embodiment, the arm section of the side elements comprises an end surface adapted for the mounting of the stator thereon and provided with a recess arranged in a lower part of the arm section in the vicinity of the end surface.
    In addition, the arm section advantageously comprises a lip at the bottom part of the arm section closest to the stator. The lip is limited by the end surface of the arm section arranged for mounting the stator, a bottom lip surface which preferably extends substantially horizontally, and a tangent surface on the recess. The recess is suitably rounded and has a radius arranged substantially in a vertical plane. The recess allows a certain flexibility of the stator in the lower part and thus counteracts a force which presses the lower part of the stator against the rotor, which could cause a non-parallel refining gap.
    According to yet another embodiment, the first intermediate element has a front end surface at the front part of the frame, which front end surface section is divided into a first front end surface and a second front end surface section on its respective side of the member arranged for mounting a bearing on the same. The second front end section is closest to a connection point for the first intermediate element on the side element and is suitably bent so that it has a radius in the horizontal plane of the horizontal surface of the first intermediate element. Preferably, the second front end surface section is substantially straight.
    Brief Description of the Drawings Fig. 1 illustrates a perspective view of a refining device comprising a stand according to the invention.
    Fig. 2 illustrates a rear perspective view of a stand for a refining device according to the invention.
    Fig. 3a illustrates a bottom view in perspective of a stand according to an embodiment of the invention.
    Fig. 3b illustrates a bottom plan view of the stand according to Fig. 3a.
    Fig. 4 illustrates a side view in perspective of a stand according to another embodiment of the present invention.
    Fig. 5 illustrates a top plan view of a stand according to yet another embodiment of the present invention.
    Fig. 6 illustrates a bottom view in perspective of a stand according to an alternative embodiment of the invention.
    Detailed Description The invention will be described in more detail below with reference to the accompanying drawings. The invention is not limited to the specific embodiments described below and shown in the figures, but can be varied within the scope of the claims. In addition, it should be noted that the drawings are not necessarily to scale, as certain features may be exaggerated in order to more clearly illustrate the invention.
    In the present description, the term “states” refers to the non-rotating refiner disk and includes the stator refiner segment, the segment holder as well as the stator disk unless otherwise explicitly stated. The term “rotor” is intended to mean the rotating refiner disc of the refining device.
    Fig. 1 shows a refining device 1 for decomposition and refining of lignocellulosic material in accordance with the present invention. The refining device 1 comprises a refining housing 2, in which a rotating disk, a so-called rotor, is located. The rotor is mounted on a shaft (not shown) placed in a shaft package 5 and is driven by a motor unit (not shown). The shaft is arranged in bearings mounted on a frame 4. The frame 4 comprises a first side element 9a, which in turn comprises a leg section 10a, a foot 11a at the lower end of the leg section 10a and an arm section 12a at the upper end of the leg section 10a. The leg section with its foot 11a is arranged to stand on a ground surface. A plate 3 of the non-rotating disk, a so-called stator, is mounted on the frame at an end surface 13a, 13b of the arm section 12a, 12b, for example by means of a first set of bolts (not shown). The stator plate 3 is usually also mounted on the refining housing 2, for example by means of a second set of bolts (not shown). The stator refiner segments and the corresponding segment holder are located inside the refining housing 2. With the center of the rear surface of the stator plate, means are connected for feeding material to be ground. These bodies have been excluded from the figure to show other details more clearly.
    The front part of the stand 6 is closest to the part where the stator is mounted, while the rear part 7 of the stand is furthest from where the stator is mounted as shown in Fig. 1.
    The frame 4 is shown in more detail in Fig. 2. As is clear from the figure, the frame 4 comprises a first and a second side element 9a, 9b arranged on opposite sides of the frame. The side elements 9a, 9b are mainly arranged vertically relative to the ground surface on which the stand rests, but they can also be slightly inclined relative to a vertical plane if desired. Each side element comprises a leg section 10a, 10b and an arm section 12a, 12. The arm section has an end surface 13a, 13b arranged substantially vertically and is preferably slightly curved in the vertical plane, the end surfaces 13a, 13b being arranged for mounting a stator plate on the same .
    The frame 4 further comprises a first intermediate element 14, which has a first end connected to the first side element 8a, and a second end connected to the second side element 9b, and which thus extends between the side elements. The first intermediate element 14 comprises means adapted to mount a bearing unit 8 thereon, which bearing unit is in turn adapted to receive the shaft of the rotor (not shown). The first intermediate element 14 is arranged substantially in a horizontal plane parallel to the horizontal axis 26 (shown in Fig. 5) of the shaft of the motor. The horizontal plane of the first element is located below the horizontal axis of the motor axis.
    It should be noted that although the figure shows an embodiment where the bearing unit is slightly lowered compared to the horizontal plane of the first intermediate element, it is also reasonable that the bearing unit, for example, is mounted on top of the first me | ane | element. surface.
    Furthermore, the frame may also comprise a second intermediate element 15, which has a first end connected to the first side element 9a and a second end connected to the second side element 9b, and which thus extends between the side elements. The second element 15 is arranged substantially in a vertical plane and is located in the vicinity of the side part of the leg section 10 which is furthest from the refiner discs, i.e. at the rear part 7 of the frame. The second intermediate element can be a disc-like element, but can also be in the form of a beam or the like.
    Fig. 2 shows an example of a horizontal plane as illustrated by the arrows hx and hy, in this case the horizontal plane of the upper surface of the first member 14. Furthermore, an example of a vertical plane is illustrated by the arrows vx and vy, in this case the vertical plane in which the second intermediate element 15 is arranged.
    Fig. 3a shows in a perspective view an embodiment of the frame 4, seen substantially from its underside, and Fig. 3b illustrates a view of the ground plane, i.e. a plan view seen from below of the stand shown in Fig. 3a. A first support beam 16 is arranged between the first and second side elements 9a, 9b, preferably between the leg sections 10a, 10b of the side elements. The respective ends of the support beam are in their longitudinal extent connected to the respective side elements. The first side beam 16 is arcuate along its longitudinal extent and in a first horizontal plane arranged at a distance from the horizontal axis of the motor shaft. More specifically, the center of gravity of a cross-section of the support beam in its longitudinal extent is located in the first horizontal plane. Preferably, the first horizontal plane is located between the horizontal axis of the rotor and the ground surface on which the frame is placed. The center of gravity of the first support beam is thus arranged in a horizontal plane below the first intermediate element 14.
    The arcuate shape of the first support beam is such that the support beam is concave in the direction of the stator, ie. towards the front of the stand. Consequently, the support beam is the backward direction of the convex frame. The first support beam 16 may be connected to the second intermediate element 15 (if present) at a central section of the longitudinal extent of the first support beam.
    The first support beam 16 has its highest point on the arch shape, ie. the middle part of its longitudinal extent, located at the rear part of the stand and in the vicinity of the rear part of the bearing unit. The axial forces are thus transmitted to the first support beam mainly at the highest point of the arch shape and are transmitted via the support beam towards the front part of the frame. The arcuate shape of the first support beam thus ensures that the axial forces to which the stator of the refining device is exposed are more efficiently distributed in the stator compared with previously known stands. The design of the frame with an arcuate first support beam thus reduces the risk that the refining gap is not parallel during the refining process.
    It should be noted that the arcuate shape of the first support beam 16 may have a constant radius over the entire longitudinal extent of the first support beam between the side elements of the frame as illustrated in the figures. However, it is also possible for the support beam to be divided into a number of longitudinal parts, preferably one of these longitudinal parts has an arcuate shape with a first radius and an adjacent longitudinal part has an arcuate shape with a second radius which differs from the first radien. Although it is preferred that the longitudinal parts be curved, it is also conceivable that one or more of them are substantially straight without departing from the inventive idea. For example, the longitudinal part arranged at respective ends connected to the side elements can be substantially straight.
    In accordance with a preferred embodiment, the frame 4 further comprises a second support beam 17 arranged substantially in a vertical plane along the horizontal axis of the axis of the rotor and has a longitudinal extent parallel to this horizontal axis. The second support beam is mainly straight in its longitudinal extent. In addition, the second support beam preferably has its center of gravity cross-section located in the same horizontal plane as the center of gravity cross-section of the first support beam 16. In addition, the height of the second support beam, ie. vertical extent in the vertical plane, preferably the same as the height of the first support beam. Furthermore, the second support beam 17 is suitably connected to a longitudinal central section of the first support beam 16. The second support beam may also be connected to a longitudinal central section of a third support beam 18 (if any), which will be described more in detail below. The purpose of the second support beam 17 is to provide sufficient stability to the part of the frame where the bearings are mounted. This is because any type of deformation of this part of the stand is undesirable and the design of the stand should thus be as stable as possible in the vicinity of the bearings.
    The forces to which the stand is subjected during the refining process are usually very large. Therefore, in most cases, it is preferred that the frame also includes a third support beam 18, as illustrated in fig. 3a and 3b. Like the first support beam 16, the third support beam 18 is also arcuate in a horizontal plane. It is also bent in the same direction as the first support beam, ie. the third support beam is arcuate so that it is concave towards the front 6 of the stand.
    The connection point 20a of the third support beam with the first side element 9a is preferably located near, or preferably also directly adjacent to, the connection point 21a of the first support beam with the first side element, as shown in Figs. 3a and 3b. Of course, the same connection points 20b, 21b apply to the first and third support beams with the second side element 9b.
    The arrangement of the connecting points results in the arch shape of the third support beam having a larger radius in the horizontal plane than the radius of the arch shape of the first support beam.
    As is the case with the first support beam 16, the arcuate shape of the third support beam 18 may have a constant radius over the entire length extension between the side elements. But it is also conceivable for the third support beam to be divided into a number of longitudinal parts, at least one of these longitudinal parts having an arcuate shape with a second radius which differs from the first radius. Although it is preferred that the longitudinal parts be curved, it is also conceivable that one or more of them are substantially straight without departing from the inventive idea. For example, the longitudinal parts arranged at respective ends connected to the side elements can be substantially straight.
    The third support beam 18 further ensures that the axial forces to which the non-rotating refiner disk and the frame are subjected during the refining process are distributed in the frame in an optimal manner. The design thereby minimizes the effect that these forces have on the refining gap because it limits any non-parallel dislocations of the stator relative to the rotor.
    As mentioned earlier, the stand should be as stable as possible in the vicinity of the bearing unit. This can be further improved in accordance with a preferred embodiment by means of a fourth support beam 19. The fourth support beam 19 extends between the first and second side elements 9a, 9b and has its center of gravity in a second horizontal plane, which is arranged at a distance from the first horizontal plane, in which the center of gravity of the first support beam is located, as well as at a distance from the horizontal axis of the rotor axis. More specifically, the second horizontal plane is arranged between the horizontal axis of the rotor shaft and the first horizontal plane. The fourth support beam thus has a center of gravity cross-section which is closer to the first intermediate element 14 than the center of gravity center of the first support beam and the horizontal axis of the axis of the rotor.
    The height, ie. the extent in the vertical direction, for the fourth support beam is preferably less than the height of the first support beam as shown in Fig. 3a.
    Like the first and third support beams, the fourth support beam is arcuate in the horizontal plane. But in contrast to the first and third support beams, the fourth support beam is arranged so that it is convex in the direction of the front of the frame.
    The fourth support beam 19 is preferably connected to the third support beam 18 substantially at the center of the longitudinal extent of the third support beam. In addition, the fourth support beam 19 is also connected to the first support beam at a distance from the center of the longitudinal extent of the first support beam and at a distance from the respective longitudinal ends of the first support beam, i.e. at a distance from where the first support beam is connected to the side elements. Although the fourth support beam has been described above as in one piece, it is quite clear to those skilled in the art that the fourth support beam may consist of a number of axial segments, preferably four, each segment extending either between a side element and another support beam. or between two different support beams. In that case, it is obvious that the different segments are connected to each other by means of the intermediate support beams. In accordance with a preferred embodiment of the stand according to the invention, the arm sections of the respective side elements are designed to allow a certain hos exiltability of the arm section in the lower area of the end surface 13a, 13b where the stator plate is mounted. It is hereby admitted that the stator, and thus its refinery surface, is allowed to tilt in relation to a vertical plane in order to assume a position substantially parallel to the refinery surface of the rotor. As previously described, the arm section 12a, 12b comprises a vertically arranged end surface 13a, 13b adapted for mounting the stator. The end surface 20 may suitably have a slightly curved or arcuate design in its vertical plane in order to allow a suitable fit to the outer shape of the stator and to provide an adequate support to the stator.
    In order to allow the desired flexibility, the arm section may be provided with a recess 22a, 22b arranged in a lower part of the arm section 12 and in the vicinity of the end surface 13, so that a lip 23 is formed at the bottom part of the arm section closest to the stator, i.e. at the front end of the stand. The lip 23 is delimited by the end surface 13a, 13b of the arm section by a bottom lip surface 24, which preferably extends substantially horizontally, and by a tangent surface 25 to the recess 22, as shown in Fig. 4. Preferably, the recess is rounded and has a radius substantially in a vertical plane to allow a soft fl flexibility during the operation.
    The arrangement with the recess 22a, 22b ensures that the neutral plane of the surface inertia moment of the frame coincides with the horizontal axis of the rotor shaft and thus that the stator is allowed to tilt in relation to a vertical plane in order to obtain a position substantially parallel to the rotor refinery surface . The alignment of the refiner disks will thus be substantially parallel to the refiner surface of the rotor. Thus, the alignment of the refiner discs will be substantially correct during the operation of the refiner. More specifically, the recess and lip allow the lower part of the end surface and thus the lower part of the stator disk (and thus the stator refiner surface) to be deflected in the forward direction, which is the same direction as the upper part of the stator generally tends to be deflected. The recess thus allows a certain fl flexibility of the stator in its lower part and thereby counteract a force which presses the lower part of the stator against the rotor.
    In accordance with a preferred embodiment, the front connection point 29 is between the leg section 10a, 10b and the arm section 12a, 12b, i.e. the connection point closest to the stator, arranged at a distance from the lip 23. The front connection point 29 between the leg section and the arm section may suitably be arranged in the recess 22, as shown in Fig. 4.
    Fig. 5 illustrates a top plan view of a stand according to yet another embodiment. As can be seen from the figure, the upper horizontal surface of the first intermediate element 14 has a specific shape in the part closest to the stator. instead of the front end surface of the first intermediate element, i.e. the end face facing the stator is arcuate over substantially its entire extent between the first and second side members or is substantially straight, then it is divided into a first front end face section 27 and a second front end face section 28 on its respective side of the bearing unit 8. The first front end surface section is the section closest to the bearing unit and is preferably substantially straight. The second front end section is closest to the point of connection of the first intermediate element with the side element and is bent so that it has a radius in the horizontal plane of the horizontal surface of the first intermediate element. The first and second front end surfaces can also be seen in Fig. 3b. Preferably, the rear end face 30 of the first intermediate member 14 is substantially straight and extends substantially perpendicular to a vertical plane along the horizontal axis of the axis of the rotor.
    The specific shape of the upper horizontal surface of the first intermediate element gives the effect that the natural frequency of the lateral refining housing is not too close to the frequency of the rotational speed during the refining process.
    Fig. 6 illustrates an alternative embodiment of the stand. In the figure, the first intermediate element, which comprises means adapted for mounting bearings thereon, has been excluded, but the horizontal axis 26 of the axis of the rotor is shown. The frame according to the present embodiment differs from that shown in Figs. 3a and 3b in that it comprises only one support beam, namely the first support beam 16.
    This support beam is arcuate in a horizontal plane, so that it is concave in the forward direction of the stand.
    As stated previously, the invention is not limited to the embodiments shown in the figures. For example, the frame need not necessarily comprise a support beam which is arcuate as long as it comprises a support beam structure arranged to transmit axial forces from the bearing unit, substantially from a longitudinal central section of the intermediate member at the rear end of the frame substantially horizontally towards the front end of the frame. According to one embodiment, the support beam structure comprises a first support member extending from a longitudinal center section of the intermediate member at the rear end of the frame to the first side member and a second support member extending substantially from a longitudinal center section of the intermediate member at the rear end of the stand to the other side member. The first and second support elements each have a longitudinal extent which is greater than half of the longitudinal extent of the first intermediate element. The first and second support elements thus extend from substantially a rear central section of the frame towards the sides in the forward direction of the frame. The longitudinal extent of the support elements may be substantially straight or 14 be curved or arcuate. Such a support beam construction may, for example, comprise two support beams connected to the intermediate element substantially at a central section of the intermediate element at the rear end of the frame and with each of the support beams connected to respective side elements of the frame near the front end of the frame. thus forming a support beam structure having a V-shape. But it is preferable to have at least one arcuate support beam in order to transmit the forces towards the front of the stand.
    The stand according to the present invention is preferably cast in a monolithic construction. However, it is also possible to manufacture the stand by assembling different parts and welding them together.
    It should be noted that the cross-sectional geometric shape of the various support beams does not limit the invention. Furthermore, they can be solid or hollow depending on, for example, the magnitude of the forces they are designed to withstand.
    权利要求:
    Claims (16)
    [1]
    A stand (4) for a refining device (1), the stand having a front end (6) and an opposite rear end (7) and comprising a first and a second side element (9a, 9b), each side element (9a, 9b) comprises a leg section (10a, 10b) and an arm section (12a, 12b), which arm section is arranged for mounting a stator (3) at the front end of the stand; a first intermediate element (14) having a first end connected to the first side element (9a) and a second end connected to the second side element (9b), the first intermediate element (14) comprising means arranged for mounting a bearing unit ( 8), in which bearing unit a shaft of a rotor is to be arranged, which shaft has a horizontal shaft (26), characterized by a support beam structure arranged to transmit axial forces from the bearing unit during the operation of the refining device, mainly from a longitudinal central section of the intermediate element at the rear end (7) of the stand towards the front end (6) of the stand -
    [2]
    A frame according to claim 1, wherein the support beam structure comprises a first support element extending from an area in the vicinity of the means arranged for mounting a bearing unit in the first intermediate element at the rear end (7) of the frame, preferably substantially from a longitudinal central section of the first the intermediate element, to the first side element (9a), the first support element has a longitudinal extent which is longer than the distance along the first intermediate element, in the direction of the longitudinal extension of the first intermediate element, between the connection point of the first support element with the intermediate element and the first the side element; a second support element extending from an area in the vicinity of the member arranged for mounting a bearing unit for the first intermediate element at the rear end (7) of the frame, preferably substantially from a longitudinal central section of the first intermediate element, to the the second side element (9a), which second support element has a longitudinal extension which is longer than the distance along the first intermediate element, in the direction of the longitudinal extent of the first intermediate element, between the connection point of the second support element with the intermediate element and the second side element . f 10 20 25 30 16
    [3]
    Stand as claimed in claim 2, wherein the first and second support elements together form a first support beam (16), which extends between the first and second side elements (9a, 9b) and is arranged so that its center of gravity cross-section is located in a first horizontal plane arranged at a distance from the horizontal axis (26), the first support beam (16) being arcuate in the first horizontal plane, so that it is concave towards the front part (6) of the frame.
    [4]
    Stand according to any one of the preceding claims, wherein the arm section comprises an end surface (13a, 13b) arranged at the front end of the frame and adapted for mounting the stator therewith, and wherein the arm section is provided with a recess (22) arranged at a lower part of the arm section in the vicinity of the end face (13a, 13b).
    [5]
    A stand according to claim 4, wherein the arm section comprises a lip (23a, 23b) at the bottom part of the arm section at the front end of the stand, which lip (23a, 23b) is delimited by the end surface (13a, 13b) of the arm section adapted for mounting the stator, a bottom section. ten lip surface (24) and a key surface (25) for the recess (22).
    [6]
    A stand according to any one of claims 4 and 5, wherein the recess (22) is rounded and has a radius arranged substantially in a vertical plane.
    [7]
    A stand according to any one of claims 2 to 6, wherein the support beam structure further comprises a second support beam (17), said second support beam having a longitudinal extension substantially in a vertical plane along the horizontal axis (26) of the axis of the rotor, and where the second support beam is substantially straight in its longitudinal extent.
    [8]
    A stand according to claim 7, wherein the second support beam (17) is connected to a longitudinal central section of the first support beam (16).
    [9]
    A stand according to any one of claims 3 to 8, wherein the support beam structure further comprises a third support beam (18) extending between the first and second side elements (9a, 9b), so that its center of gravity cross-section is located in a horizontal plane, preferably the first horizontal plane, the third support beam (18) being arcuate in the horizontal plane, so that it is concave towards the front of the frame. 20 25 30 17
    [10]
    A stand according to claim 9, wherein a connection point (21a) for the first support beam with the first side element (9a) is immediately close to a connection point (20a) for the third support beam with the first side element (9a).
    [11]
    A stand according to any one of claims 3 to 10, wherein the support beam structure comprises a fourth support beam (19) extending between the first and second side elements (9a, 9b), the fourth support beam being arcuate in a horizontal plane, so that it is convex in the direction of the front of the stand.
    [12]
    A stand according to claim 11, wherein the fourth support beam (19) has a center of gravity cross-section arranged in a second horizontal plane, which second horizontal plane is arranged at a distance from the first horizontal plane.
    [13]
    A stand according to any one of claims 11 and 12, wherein the fourth support beam (19) is connected to the third support beam, substantially at the center of the longitudinal extent of the third support beam.
    [14]
    Stand as claimed in any of the foregoing claims, wherein the first intermediate element (14) has a front end surface, which front end surface section is divided into a first front end surface section (27) and a second front end surface section (28) on its respective side of the means arranged for mounting a bearing unit (8) thereby, the second front end section being closest to a connection point for the first intermediate element with the side element (9) and being bent so as to have a radius in the horizontal plane of the horizontal surface of the first intermediate element.
    [15]
    15. essentially straight. A stand according to claim 14, wherein the second front end surface section (28) is in
    [16]
    A lignocellulosic material comprising a rotor and an opposing stator, the refiner for disintegrating and refining the rotor and the stator each having a refiner surface, a refining gap between the refiner surfaces, the device further comprising a stand according to any one of claims 1-15.
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    同族专利:
    公开号 | 公开日
    WO2013081527A1|2013-06-06|
    CN103998681A|2014-08-20|
    SE536186C2|2013-06-18|
    EP2785912A4|2015-10-28|
    CN103998681B|2017-03-29|
    EP2785912A1|2014-10-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US854861A|1902-09-29|1907-05-28|Charles E Pease|Grinding-mill.|
    US2964250A|1953-07-15|1960-12-13|Defibrator Ab|Grinding apparatus for fibrous materials|
    US3038673A|1960-02-19|1962-06-12|Sprout Waldron & Co Inc|Attrition mill apparatus|
    US3589629A|1966-09-16|1971-06-29|Bauer Bros Co|Refiner installation|
    SE351453B|1970-11-04|1972-11-27|Sca Project Ab|
    US3799456A|1972-06-14|1974-03-26|Bauer Bros Co|Refiner plate clearance control system|
    SE470054B|1992-05-08|1993-11-01|Sunds Defibrator Ind Ab|Apparatus for refining fiber material comprising two opposing grinding wheels, at least one of which is supported by a rotatable shaft stored in a frame|
    CA2096271A1|1993-05-14|1994-11-15|Thomas Arvidsson|Support for a stator of a refining machine|
    SE530009C2|2006-06-01|2008-02-05|Metso Paper Inc|Apparatus for the alignment of a grinder's shaft device|
    EP2061930B1|2006-08-10|2018-05-02|Valmet Aktiebolag|A forming section of a paper making machine and a method of assembling a forming section of a paper making machine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1151140A|SE536186C2|2011-11-30|2011-11-30|Stand for a refining apparatus for decomposing and refining lignocellulosic material|SE1151140A| SE536186C2|2011-11-30|2011-11-30|Stand for a refining apparatus for decomposing and refining lignocellulosic material|
    EP12853264.5A| EP2785912A4|2011-11-30|2012-11-14|Stand for refining apparatus|
    PCT/SE2012/051252| WO2013081527A1|2011-11-30|2012-11-14|Stand for refining apparatus|
    CN201280058856.3A| CN103998681B|2011-11-30|2012-11-14|For the column of Refining apparatus|
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