• 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:
    rotating sealing arrangement. the present invention relates to a rotating sealing arrangement with a rotatingly mounted machine part and a machine part, which forms a bearing for the rotatingly mounted machine part, a first of the machine parts forming a sealing receiving structure, and the second of the machine parts has a surface that forms a sealing surface, and at least one rotating seal arranged in the sealing receiving structure. by means of the rotating seal, a high pressure area is sealed against a low pressure area between the machine parts.
    公开号:BR112012018967B1
    申请号:R112012018967-0
    申请日:2011-01-20
    公开日:2020-09-08
    发明作者:Holger Jordan
    申请人:Trelleborg Sealing Solutions Germany Gmbh；
    IPC主号:
    专利说明:

    [0001] [0001] The present invention relates to a rotating sealing arrangement, with a rotatingly mounted machine part and a machine part, which forms a bearing for the rotatingly mounted machine part, with a first of the machine parts forming a sealing receiving structure, and the second the machine parts having a surface forming a sealing surface, and at least one rotating seal disposed on the sealing receiving structure. In this case, a high pressure area is sealed by means of the rotating seal against a low pressure area between the machine parts.
    [0002] [0002] Rotary seals according to the species are used, for example, to seal rotating passages. The high pressure area is then formed by a rotating passage area between the two machine parts. In this case, the rotating seal is also referred to as the swiveling passage seal. The swivel passage allows fluids, that is, gases or liquids, to make a hermetic transition between a stationary machine part and a rotating machine part. Typically, the first machine part is made with the sealing receiving structure as the stationary machine part and the second machine part is formed as a rotatingly mounted shaft thereon. These swivel passages are used, for example, in hydraulic applications or for introducing hot gas to heat a cylinder.
    [0003] [0003] Known swiveling passage seals are formed, for example, as a slip ring (slip ring seal), the slip ring usually having a seal ring made of polytetrafluoroethylene (PTFE).
    [0004] [0004] An example of such a swivel passage seal is described in DE 10 2007 062 470 A1. In this case, a revolving passage seal is designed in such a way that the smallest possible amount of fluid, which is under an overpressure, reaches from the revolving passage area to the low pressure area, that is, that a small leak is present. . The smaller the leak, however, the greater the frictional force, which is between the sealing surface of the rotatingly mounted machine part and the swiveling passage seal. The wear of the swivel passage seal is correspondingly increased and a relatively large amount of drive energy is used against the aforementioned frictional force. Particularly, on rotary shafts under high rotation numbers and fluids that are under high pressure, for this reason, the service life of a known rotary passage seal of this type is short.
    [0005] [0005] In addition, dragging the rotating seal on the shaft must be avoided. For this purpose, the sealing ring is often compressed within a retaining element also annular, produced, for example, from steel. The retaining element is mounted in a torsion resistant manner on the seal receiving structure. However, such a swivel passage seal is relatively complex to produce. For torsion-resistant assembly, a torsion fixation must be provided in the seal receiving structure and / or the liquid retaining additive must be fixedly compressed in the seal receiving structure. Mounting in a simple groove as a seal receiving structure is not possible due to the rigidity of the retaining element.
    [0006] [0006] The invention is based on the task of providing a rotary sealing arrangement, which avoids the disadvantages of the state of the art, and it should be possible, in particular, to simply install the rotation seal between the machine parts and reliably avoiding drag of the sealing ring of the rotating seal.
    [0007] [0007] This task is solved by the objects of the independent patent claims. The dependent claims represent preferred embodiments of the invention.
    [0008] [0008] A rotary sealing arrangement according to the invention has a rotatingly mounted machine part and a machine part, which forms a bearing for the rotatingly mounted machine part, the first of which is the machine part it forms a sealing receiving structure, and the second of the machine parts has a surface that forms a sealing surface. At least one rotating seal is provided arranged in the seal receiving structure, for sealing a high pressure area against a low pressure area between the machine parts. The high pressure area is, at least temporarily, under overpressure in relation to the pressure of the low pressure area.
    [0009] [0009] According to the invention, the rotating seal has a substantially rigid support element and substantially stable in position in relation to the first machine part, an elasticly deformable backrest body, which is attached to the side of the high pressure area to the support element, and a sealing ring, which has a sealing edge and loosely leaned against the thrust body. The sealing ring has on both sides of the sealing edge, in each case, a wide side and has a sealing seat edge area, away from the sealing edge. The wide sides are connected to each other through the sealing seat area and the thrust body is at least partially arranged between one of the wide sides of the sealing ring and the supporting element.
    [0010] [00010] When the sealing surface is formed as a cylindrical surface area, therefore, for example, as a coating surface of a rotating axis, the thrust body is arranged in an axial direction, therefore, in the direction of the axis of rotation, the rotatingly mounted part of the machine between the support element and the sealing ring.
    [0011] [00011] When the sealing surface is formed as a circular surface or a circular colored surface, therefore, for example, as a front side surface of a rotating axis, the abutment body is arranged in a radial direction, therefore, perpendicular to the direction of rotation axis, of the rotatingly mounted machine part, between the support element and the sealing ring.
    [0012] [00012] The stop body, in this case, does not need to be completely arranged between the support element and the sealing ring. It can also be beyond that area. By "leaning loosely", it is understood, in this case, that the sealing ring is not formed in a piece like the abutment body. The sealing ring can be compressed on the thrust body by the construction of the rotating seal, so that its relative position in relation to the thrust body is fixed by frictional forces, which are present between the sealing ring and the thrust body. swab. The sealing ring does not have to touch the stop body permanently. It can lean against the stop body in a period in which a high pressure, through a certain limit value defined by the construction of the rotating seal, is present in the high pressure area, that is, being compressed by high pressure in the backrest body.
    [0013] [00013] Due to the at least temporary compression of the sealing ring on the elastic rubber stop body, the relative position of the sealing ring in relation to the stop body is fixed by frictional forces, which are present between the sealing ring and the backrest body. The stop body is compressed in the same way on the support element and / or can be made in one piece with the support element. Dragging the sealing ring by the rotatingly mounted machine part is thus reliably avoided.
    [0014] [00014] Simple assembly of the rotating seal is particularly possible when the support element is formed in one piece with the first machine part as part of the seal receiving structure. The sealing receiving structure can in this case be formed as an annular groove. As, then, there is no need for an additional rigid support element, the sealing ring and, when not made in a piece with the support element, the backrest body can be inserted or tightened simply as elastically deformable parts in the structure. sealing reception.
    [0015] [00015] The rotary sealing arrangement according to the invention is particularly suitable for rotary passages, in which the second machine part is formed as a radial axis mounted on the first machine part, the rotary seal being formed in an annular manner and is arranged around the radial axis. The swiveling passage is therefore part of a pressure supply from a pressure accumulator, which, according to need, can be regulated and / or adjusted with respect to its pressure.
    [0016] [00016] When the thrust body extends in a radical direction of the rotating seal between the seal ring and the seal receiving structure, a pre-tension of the seal ring directed radially towards the second machine part by a elastic restoring force of the backrest. As a result, a compressive force of the sealing edge in the direction of the sealing surface can be previously adjusted by the construction of the rotation seal.
    [0017] [00017] Preferably, the thrust body has an area attached to the sealing ring on the side of the high pressure area, in the axial direction of the rotatingly mounted machine part. As a result, the edge of the sealing ring is radially away from the sealing surface, so the edge area of the sealing seat is arranged in a cavity in the abutment body. That edge then forms a kind of point of rotation, around which the seal ring can turn more or less, in the case of relative pressure differences between high pressure area and low pressure area, so that the force, with which the sealing edge is compressed on the sealing surface can adapt dynamically.
    [0018] [00018] Particularly preferably, the sealing arrangement according to the invention is formed as a swiveling passage. In this case, the high pressure area is formed by a swivel passage area, and through the swivel passage area a fluid, which fluid that is under an overpressure in relation to the low pressure area, can be introduced from one of the parts machine, through the sealing surface, on the other machine parts. That is, the two machine parts together form a revolving passage and the rotating seal is arranged as a revolving passage seal between the machine parts. The swivel passage area forms the high pressure area, which in relation to the pressure of the low pressure area, is, at least temporarily, under overpressure.
    [0019] [00019] Particularly preferably, the support element extends, at least in one support region, obliquely to the axial direction of the rotatingly mounted machine part, such that the sealing ring in the support region is compressed by the stop body out of the sealing surface. That is, the stop body is formed in such a way that the sealing ring is compressed with the sealing edge against internal elastic forces of the sweep body towards the sealing surface, when the stop body, for example, by a existing pressure in relation to the low pressure area, the part of its side is compressed on the side of the seal ring. In this way, the frictional forces acting on a rotating passage seal between the sealing surface of the rotatingly mounted machine part and the rotating passage seal can be reduced particularly efficiently. In this way, it can be obtained that in a state without overpressure, or a state with a pressure located below a threshold value, the sealing edge in the slope-e swivel passage area, substantially without compressive force, on the sealing surface or is away from the sealing surface. In an overpressure state or a state with a pressure above the threshold value, in the swiveling passage area, the sealing edge, on the other hand, is hermetically abutting the sealing surface, since, then, by the fluid that is under pressure, a component of force is exerted on the sealing ring, which acts against the withdrawal by the thrust body. Therefore, a higher sealing effect is caused by the sealing lip present, when there is a relatively high pressure in the swivel passage area, therefore, when the fluid in the swivel passage area is under a relatively high pressure. As in many rotary pass applications, the fluid is only temporarily under high pressure, or is only temporarily required with a particularly high pressure, thus a small friction of the rotating seal is obtained, with a small leak. For example, in the case of a hot gas as a fluid, which is used to heat a cylinder, the sealing edge is only compressed strongly on the sealing surface, when the gas is compressed with high pressure in the cylinder, for example temporarily heat the cylinder. Only within a warm-up period, a rotation of the cylinder is braked in a noteworthy manner by the sealing edge compressed on the sealing surface. When, at the moment, hot gas is not being introduced, for example, due to the fact that, for example, the service temperature of the cylinder has been reached, the fluid pressure drops in the rotating passage area and the sealing edge rises , for example, from the sealing surface, since the sealing ring is compressed out of the sealing surface by the thrust body, particularly put under pre-elastic tension, and / or compressed.
    [0020] [00020] When the sealing ring has a concave inclined cross section, at an angle to the rotating passage area, a force, which compresses the sealing edge over the sealing area against the internal elastic forces of the thrust body, can be generated particularly well by the overpressure of the existing fluid, at least temporarily, in the rotating passage area. In this case, the swiveling passage area is so limited by the sealing ring and the sealing surface, that between the surface on the side of the swiveling passage area of the sealing ring and the sealing surface there is an obtuse angle.
    [0021] [00021] The support element can be produced from a rigid plastic or metal, preferably steel. The sealing ring can be advantageously produced from PTFE, therefore, polytetrafluoroethylene PUR (polyurethane). Wear-resistant elastic rubber materials, such as fluorinated rubber) or HNBR (elastic rubber materials) can also be used as materials for the seal ring. The back body is made, pre, of an elastomer. In this case, it is important that it behaves like an elastic rubber spring.
    [0022] [00022] When two rotating seals are preferably arranged in a specularly symmetrical manner around the, or one, swiveling passage area, the swiveling passage area is securely sealed on both sides.
    [0023] [00023] The invention is now explained in more detail by means of modality examples, with reference to the drawings. In the drawings, a sectional image is shown, in each case, axially guided to the rotatingly mounted machine part, and in each case only the upper half of the sealing arrangement is shown.
    [0024] [00024] Figures 1a and 1b show a preferred embodiment of a rotary sealing arrangement according to the invention for sealing a sealing surface formed as a cylindrical surface area.
    [0025] [00025] Figure 2 shows another embodiment of a rotating sealing arrangement according to the invention in a rotating passage.
    [0026] [00026] Figure 3 shows another embodiment of a rotating sealing arrangement according to the invention.
    [0027] [00027] Figure 4 shows an embodiment of a rotating sealing arrangement according to the invention for sealing a rotating passage on a front side of a rotatingly mounted machine part.
    [0028] [00028] Figures 5a to 5e show modalities of rotating seals of a rotary sealing arrangement according to the invention.
    [0029] [00029] Figure 6 shows an embodiment of a backing body of a rotating sealing arrangement according to the invention.
    [0030] [00030] Figure 7 shows another embodiment of a rotary seal according to the invention similar to the rotary seal of figure 3.
    [0031] [00031] Figures 8a to 8h show other modalities of rotary seals of a rotary sealing arrangement according to the invention.
    [0032] [00032] The representations of the drawings show the object according to the invention in a strongly schematic manner and should not be understood in scale. The individual components of the object according to the invention are represented in such a way that their structure can be well shown.
    [0033] [00033] In figures 1a and 1b, a preferred embodiment of a rotary sealing arrangement 1 according to the invention is shown in a cross-section. Between a rotatingly mounted machine part 2 (shaft) and a machine part 3, which forms a bearing for the rotatingly mounted machine part 2, rotating seals are mounted 5. The rotating seals therefore have a shape annular symmetrical to the central point of the ring. The axis rotation is symbolically represented by a double curved arrow. The second machine part 2 is formed as a radial axis mounted on the first machine part 3, the rotating seals 5 being formed in an annular shape and arranged around the radial axis. The axis of rotation symmetry 6 of the rotary seals 5 coincides with the axis of rotation of the radial axis.
    [0034] [00034] Alternatively, machine part 3 can also rotate around machine part 2.
    [0035] [00035] The rotating seals 5 are inserted in a sealing receiving structure formed by a first of the machine parts 3. The sealing receiving structure need not be formed, as shown in the figure, by a special internal surface molding of the first machine part, therefore, stationary. Only a non-specified surface area can also be indicated by the seal receiving structure, in which a rotating seal is positioned. The second of the machine parts 2, therefore in the present case, the radical axis, has a surface that forms a sealing surface 7, which is shaped as a cylindrical surface area. The seat of the rotating seals 5 is fixed by a disc 8, which, in turn, is fixed by means of an elastic ring 9 inserted in a groove.
    [0036] [00036] By means of the rotating seals 5, a high pressure area 10, formed as a swivel passage area, is sealed against a low pressure area 11 between machine parts 2, 3. Through the swivel passage area 10, a fluid, which is under an overpressure in relation to the low pressure area 11, with the low pressure PN, can be introduced from the stationary machine part 3, through the sealing surface 7, into the rotating machine part 3. The low pressure Pn it can be, for example, normal atmospheric pressure. For that purpose, a hole 14 is provided in the stationary machine part 3, which exits in the rotating passage area. Also, the rotating machine part 2 has holes, which come out in the rotary passage area 10 and connect it to the rotary passage area 10, for fluid passage, with an axis end of the rotating machine part 2. Through the holes 14 the fluid it can therefore be inserted from the stationary machine part 3 into the rotating machine part 2, which is symbolically represented in the figure by the arrows 16. If necessary, the fluid can also flow against the arrow direction of the arrows 16.
    [0037] [00037] Two rotating seals 5 are arranged in a specularly symmetrical manner around the high pressure area 10, or the swiveling passage area. Each of the rotating seals 5 has a substantially rigid support element 20 and substantially stable in position to the first machine part 3, a rubber-deformable backrest 21, attached to the side of the swiveling passage area on the support element 20, and a sealing ring 23, which has a sealing edge 22 and is loosely abutted against the abutment body 21.
    [0038] [00038] Each of the sealing rings 23 has on both sides of its sealing edge 22, in each case, a wide side 24 and has a sealing seat edge area 26 away from the sealing edge. The wide sides 24 of each seal ring 23 are connected to each other through the respective sealing seat edge area 26 and the thrust body 21 is arranged, in each case, between one of the wide sides 24 of the respective seal ring. 23 and the associated support element 20. The wide sides 24 form surface areas on at least one side of the sealing edge 22, which at least one side of the sealing edge 22 forms a sufficient leading surface for the fluid, which is under pressure in the high area pressure, to compress the sealing ring 23 with the sealing edge 22 hermetically on the sealing surface 7. The sealing ring 23 may have, in particular, the shape of a flat circular ring, preferably concave deformed, being that the inwardly directed edge forms the sealing edge 7.
    [0039] [00039] Therefore, the sealing rings 23 are not fixedly connected with the corresponding abutment body 21, but are only abutted. In that case, intermediate spaces may also be present. The support element 20 is a separate component from the machine parts 2, 3. The sealing edge 22 of the sealing rings 23 is arranged, in each case, in a load region of the respective sealing ring, which protrudes beyond of the support element 20 and the thrust body 21 located in the middle, towards the sealing surface 7. Particularly, this load region is variable in its position when applied under pressure in the high pressure area 10. The load region deforms therefore, when applied under pressure, in such a way that the sealing edge 22 is compressed on the sealing surface 7.
    [0040] [00040] The sealing rings 23 are separated, in each case, from the sealing surface 7 by the corresponding stop body 21. This is represented symbolically by the arrows 25 in the figure. The spacing occurs due to the elastic rubber properties of the thrust bodies 21. The sealing rings 23 have, in each case, a concave inclined cross section to the swivel passage area 10. The swivel passage area 10 is limited, in this case , by the sealing rings 23 and by the sealing surface 7 such that between the surfaces on the side of the swiveling passage area of the sealing rings 23 and the sealing surface 7 there is, in each case, an obtuse angle. The abutment bodies 21 rest against the support element 20 in each corresponding case.
    [0041] [00041] When a fluid, which is under high pressure Ph, is introduced into the swivel passage area 10, then, as symbolized by curved arrows in the figure, a force is exerted on the surfaces on the side of the swivel passage area of the sealing rings 23. This force leads to a compression of the abutment bodies 21 against their internal elastic rubber adjusting forces, which move the sealing ring 23 away from the sealing surface 7. The sealing edges 22 are thus compressed on the sealing surface 7, so that the swivel passage area 10 is sealed against the low pressure area 11, substantially free of leaks.
    [0042] [00042] In the sealing arrangement shown in figure 1, the two rotating seals 5 have, in each case, an identical radial diameter. Correspondingly, the seal receiving structure, on which the two rotating seals 5 are mounted, also has the same internal diameter on both sides of hole 14 in the stationary machine part 3.
    [0043] [00043] In figure 1b, the two rotating seals 5 have, in each case, a different radial diameter. Correspondingly, the seal receiving structure, on which the rotating seals 5 are mounted, forms a different internal diameter on the two sides of the hole 14 in the stationary machine part 3, so that a step 29 is formed by the internal diameter.
    [0044] [00044] Another embodiment of a rotating sealing arrangement according to the invention in a rotating passage is shown in figure 2. The rotating sealing arrangement corresponds substantially to the modality shown in figure 1a, which is why the characteristics corresponding to each other are designated with the same reference signs. Unlike the modality of figure 1a, the stop bodies 21 of the rotating seals 5 shown in figure 2, in each case, form a flange in their area adjacent to hole 14 in the stationary machine part 3. The edges of the stop bodies 21 touch so that they have the function of a restoration valve. When a fluid is introduced under high pressure in the direction of the arrow 16 through hole 14 in the stationary machine part 3, the edges are spread apart, so that the fluid is introduced into the high pressure area 10. When the fluid pressure is reduced, the edges 30 close by the elastic restoring forces of the rubber elastic material of the back bodies 21 again the hole 14 in the stationary machine part 3.
    [0045] [00045] Another embodiment of a rotating sealing arrangement according to the invention is shown in figure 3. As in figure 1, the rotating seal 5 of the rotating seal arrangement is arranged to seal a high pressure area 10 formed as a rotary passage area against a low pressure area 11 in a rotary passage between a second machine part 2 formed as an axis and a first machine 3 formed as a bearing thereof. In the figures, the parts of the rotating sealing arrangement corresponding to figure 1 are designated with the same reference signs.
    [0046] [00046] Unlike the modality of figure 1, the support element 20 is made in one piece with the second part of machine 2. The support element 20 is formed, in this chaos, by the flank on the low pressure side of a groove that it forms the sealing receiving structure, in which the elastic rubber backing body 21 and the sealing ring 23 are inserted.
    [0047] [00047] The sealing ring is then tightened in the groove by the thrust body. For this purpose, the thrust body 21 has, on the side of the high pressure area, in the axial direction of the rotatingly mounted machine part 2, an area attached to the seal ring 23. Thus, the edge of the seal ring 23 radially away from the sealing surface is arranged in a cavity of the thrust body 21. At least when sufficient overpressure exists in the high pressure area 10, the sealing ring 23 is compressed firmly in the area of the thrust body 21 disposed between the element support 20 and the seal ring 23, so that drag of the seal ring 23 by the shaft is prevented. The compression of the sealing ring on the thrust body is symbolically represented in the figure by an arrow in the region of the sealing surface.
    [0048] [00048] The abutment body 21 also extends in the radial direction of the rotating seal 5, between the seal ring 23 and the seal receiving structure. In this case, a pre-tension of the sealing ring 23 is directed radially towards the second machine part 2, by an elastic restoring force of the backing body 21. This is caused by the fact that in its basic form, the body M-shaped backrest 21 is compressed with its two upper ends 60, which end in a non-compressed point at the groove bottom of the groove. For this reason, the two ends 60 are shown rounded in the figure. The flexible support of the sealing ring 23, thus provided in the groove, is still further flexible by empty spaces between the groove bottom and the stop body 21 and / or between the stop body 21 and the sealing ring. As the sealing ring 23 can easily turn in the case of pressure application, the sealing edge 22 is flattened or the sealing edge 22 forms two edges, which, depending on the pressure application, effect the sealing, alternatively against the sealing surface 7.
    [0049] [00049] In figure 4 there is shown a modality of a rotating sealing arrangement according to the invention, with two rotating seals 5 for sealing a rotating passage on a front side of a rotatingly mounted machine part 2. As the front side, a side of the rotating machine part 2 is designated, on whose surface the axis of rotation of the rotating machine part 2, that is, its axial direction, is positioned perpendicularly. In this case, the characteristics corresponding to the rotary sealing arrangement of figure 1a are designated with the same reference signs. The front side of the rotating machine part 2 forms the sealing surface 7 and is formed as a circular surface. The thrust bodies 21 are arranged in a radial direction of the rotatingly mounted machine part 2, between the supporting element 20 in each corresponding case and the respective sealing ring 23. The stationary machine part 3 has on both sides of a hole 14, which serves as the fluid supply, in each case, an annular groove as a seal receiving structure, in which the rotating seals 5 are inserted. In the groove flanks of the groove away from the hole, a notch 32 is provided in each case, in which, in each case, a projection provided in the supporting elements 20 is engaged, with which the rotating seals 5 are fixed in position. axially in relation to the rotating machine part 2.
    [0050] [00050] Figures 5a to 5e show figures in axial section of various modalities of rotary seals of a rotary sealing arrangement according to the invention. The modalities correspond, substantially, to the rotating fence according to figure 1. For this reason, only special details are explained hereinafter. In the figures, the parts of the rotating sealing arrangement corresponding to figure 1 are designated with the same reference signs. The stop bodies 21 of the rotating seals have, in each case, a foot-like widening on the side of the sealing receiving structure. The stop body extends, in this case, in the radial direction of the rotating seal 5, between the seal ring 23 and the seal receiving structure and the stop body 21 has on the side of the high pressure area, in the axial direction from the rotatingly mounted machine part 2, an area attached to the sealing ring 23. The latter area extends a different distance in the direction of the sealing edge. In this way, the edge of the sealing ring 23 away from the sealing surface is arranged in a cavity of the thrust body 21.
    [0051] [00051] The abutment bodies 21 have, in each case, on the sealing receiving side at least one end 60 that ends in a pointed manner. These ends 60 are compressed, in each case, in such a way in the sealing receiving structure that the abutment body 21 deforms elastically and, due to this, a previous tension of the sealing ring 23 is obtained. This is symbolized by the dashed representation of the ends 60. As a result, the edge of the sealing ring 23 radially away from the sealing surface is also tightened, in each case, elastically in the cavity in the abutment body 21. In this figure 5b, a edge 70, spanning a distance. The rotating seals shown are also distinguished in the formation of the support elements 20, the sealing rings 23 and the areas of the abutment bodies 21 located between them.
    [0052] [00052] In figures 5a to 5e, the support elements 20, the sealing rings 23 and the areas of the abutment bodies 21 located between them have, in each case, a concave inclined cross section to the high pressure area . In that case, in the exemplary examples of figures 5c to 5e the area of the thrust body 21 disposed between the support element 20 and the sealing ring 23 is conically widened towards the sealing edge. On the other hand, in figure 57 the cross section of the support element 20, the sealing ring 23 and the area of the thrust body 21 located between them is not inclined.
    [0053] [00053] All the represented modalities have in common the fact that a previous tension directed radially towards the second part of machine 2, not shown, is present, in each case, by an elastic restoring force of the backrest 21. Because the support element 20 extends, in each dog, at least in a support region, obliquely to the axial direction of the rotatingly mounted machine part (not shown), the stop body 21 is compressed in that region between the support element 20 and the sealing ring by the previously mentioned tension. With this, in turn, the sealing ring 23 in the support region is removed by the thrust body 21 from the sealing surface. The abutment body 21 is arranged, in this case, in the support region, in each case, radially between the respective support element 20 and the corresponding seal ring 23.
    [0054] [00054] In figure 6 there is shown an embodiment of a backrest body 21 of a rotating sealing arrangement according to the invention in an axially directed top view. Also shown is the surface on the sealing ring side of the stop body 21. Although the stop body can also have flat surfaces on the side of the sealing ring, in this embodiment example, however, the surface has notches 80 in the direction of the ring of sealing, so that a distance remains between the stop body 21 and the sealing ring, also in the compression of the stop body 21.
    [0055] [00055] In figure 7, another embodiment of a rotating seal according to the invention similar to the rotating seal in figure 3 is shown in axial section. The two pointed ends 60 provided for compression of the backrest body and , on both sides, in each case, a distance 85 between the thrust body 21 and the sealing ring 23. The distances 85 can be filled after insertion of the thrust body 21 and the sealing ring into a groove in a structure axial compression sealing reception of the stop body 21, whereby the sealing ring 23 can be tightened by the stop body 21.
    [0056] [00056] Figures 8a to 8h show cross-sectional figures of various types of rotating seals 5 of a rotating sealing arrangement. The rotating seals 5 of the respective rotating seal are arranged, in each case, in a sealing receiving structure formed as a groove of a stationary machine part 3 and seal, in each case, against a sealing surface of a rotating machine part 2, formed as a cylindrical surface area. In each case, a support element 20, an elastic rubber backing body 21 and a sealing ring 23 are provided. The backrest body 21 is arranged, in each case, at least partially, in the axial direction of the machine 2 rotatably mounted between the support element 20 and the sealing ring 23. The stop bodies 21 are arranged, in each case, symmetrically around the sealing ring 23. In figures 8e and 8h the support element 20 is made as a component, for example, of sheet metal, which surrounds the sealing ring 23 and the thrust bodies 21 away from the sealing edge. In figures 8d and 8g the support element 20 is formed by the flanks groove of the seal receiving structure. In this chaos, no separate, additional support element is foreseen. Figures 8c and 8D provide, in each case, a position fixing element 90 arranged on both sides of the sealing ring. These position fasteners 90 in each case prevent the thrust body 21 and / or the sealing ring 23 from being compressed too strongly on the sealing surface 7.
    [0057] - uma parte de máquina rotativa 2 montada de modo rotativo e uma parte de máquina 3, que forma um mancal para a parte de máquina 2 montada de modo rotativo, sendo que uma primeira das partes de máquina 3 forma uma estrutura de recepção de vedação, e a segunda das partes de máquina 2 apresenta uma superfície que forma uma superfície de vedação 7, e - pelo menos uma vedação rotativa 5 disposta na estrutura de recepção de vedação, para vedação de uma área de alta pressão 10 contra uma área de baixa pressão 11 entre as partes de máquina 2, 3. [00057] A rotating fence arrangement is proposed, with - a rotating machine part 2 rotatably mounted and a machine part 3, which forms a bearing for machine part 2 rotatably mounted, the first of the machine parts 3 forming a sealing receiving structure, and the second of the machine parts 2 has a surface that forms a sealing surface 7, and - at least one rotating seal 5 arranged in the seal receiving structure, for sealing a high pressure area 10 against a low pressure area 11 between the machine parts 2, 3.
    [0058] [00058] The rotating seal 5 has a substantially rigid support element 20 and substantially stable in position in relation to the first machine part 3, an elasticly deformable backrest body 21, which is attached to the side of the high pressure area to the support element 20, and a sealing ring 23, which has a sealing edge 22 and is preferably loosely abutted against the abutment body 21.
    [0059] [00059] The sealing ring 23 has on both sides of the sealing edge 22, in each case, a wide side 24 and the wide sides 24 are connected to each other through the sealing seat edge area 26. In this case, the thrust body 21 is arranged, at least partially, between at least one of the wide sides 24 of the sealing ring 23 and the supporting element 20.
    [0060] [00060] The invention is not limited to the examples of modality indicated above. On the contrary, a number of variants are conceivable, which also make use of the characteristics of the invention to a modality, formed, in principle, in a different way.
    权利要求:
    Claims (10)
    [0001]
    Swivel pass comprising: - a machine part (2) rotatably mounted and a machine part (3), which forms a bearing for the machine part (2) rotatably mounted, the first of the machine parts (3) being a sealing receiving structure, and the second of the machine parts (2) has a surface that forms a sealing surface (7), and - at least one rotating seal (5) arranged in the seal receiving structure, for sealing a high pressure area (10) formed as a swiveling passage area against a low pressure area (11) between the machine parts (2 , 3), and a fluid can be introduced through the rotating passage area, which is under an overpressure in relation to the low pressure area (11), of one of the machine parts (2, 3), through the sealing surface (7), to the other of the machine parts (2, 3), with the rotating seal (5) having - a support element (20) substantially rigid and substantially stable in position in relation to the first machine part (3), - an elasticly deformable backrest body (21) that attaches on the side of the high pressure area to the support element (20), and - a sealing ring (23), which is made of PTFE and has a sealing edge (22) and is preferably leaning loosely on the thrust body (21), the sealing ring (23) has on both sides of the sealing edge (22), in each case, a wide side (24) and a sealing seat edge area (26) away from the sealing edge and wide sides (24) are connected to each other through the sealing seat edge area (26), the thrust body (21) is at least partially arranged between at least one of the wide sides (24) of the sealing ring (23) and the support element (20), the swivel passage being characterized by the fact that the support element (20) extends at least in a support region obliquely to the direction of the machine part (2) rotatably mounted and the backrest body (21) it is formed in such a way that the sealing ring (23) in the support region is removed by the thrust body (21) from the sealing surface (7), so that the sealing edge (22) of the sealing ring (23 ), at a pressure below a threshold value, leans against the rotating passage area without compressive force on the sealing surface (7) or is distanced from the sealing surface (7) and the sealing ring (23) it is compressed with the sealing edge (22) at a pressure above the threshold value, against internal elastic forces of the abutment body (21) towards the sealing surface (7) and leans against it hermetically.
    [0002]
    Swiveling passage according to claim 1, characterized in that the sealing surface (7) is formed as a cylindrical surface area and the thrust body (21) is arranged, at least partially, in the axial direction of the machine part (2) rotatably mounted between the support element (20) and the sealing ring (23).
    [0003]
    Swiveling passage according to claim 1, characterized in that the sealing surface (7) is formed as a circular surface or a circular crown surface and the thrust body (21) is arranged, at least partially, in the direction radial part of the machine part (2) rotatably mounted between the support element (20) and the sealing ring (23).
    [0004]
    Swiveling passage according to any one of claims 1 to 3, characterized in that the second machine part (2) is formed as a radial axis mounted on the first machine part (3), the rotary seal (5) being it is formed annularly and is arranged around the radial axis.
    [0005]
    Swiveling passage according to any one of claims 1 to 4, characterized in that the support element (20) is formed in one piece with the first machine part (3) as part of the sealing receiving structure.
    [0006]
    Swiveling passage according to any one of claims 1 to 5, characterized in that the thrust body (21) extends in the radial direction of the rotating seal (5), between the sealing ring (23) and the sealing reception, and a previous tension of the sealing ring (23), directed radially towards the second machine part (2), is present by an elastic restoring force of the stop body (21).
    [0007]
    Swiveling passage according to any one of claims 1 to 6, characterized in that the thrust body (21) has an area attached to the sealing ring (23), on the side of the high pressure area, in the axial direction of the part of machine (2) mounted in a rotating manner, such that the edge of the sealing ring (23) radially away from the sealing surface is arranged in a cavity of the thrust body (21).
    [0008]
    Swiveling passage according to claim 1, characterized in that the sealing ring (23) has a concave inclined cross section to the swiveling passage area (10).
    [0009]
    Swiveling passage according to any one of claims 1 to 8, characterized in that the supporting element (20) is made of steel and / or the thrust body (21) is made of an elastomer.
    [0010]
    Swiveling passage according to any one of claims 1 to 9, characterized in that two rotating seals (5) are preferably arranged in a specularly symmetrical manner around the high pressure area (10).
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    同族专利:
    公开号 | 公开日
    JP5604530B2|2014-10-08|
    US20170097093A1|2017-04-06|
    KR20120126089A|2012-11-20|
    BR112012018967A2|2016-09-13|
    CN103109117A|2013-05-15|
    HUE026920T2|2016-07-28|
    WO2011092111A2|2011-08-04|
    DE102010001345B4|2013-09-19|
    PL2529134T3|2016-04-29|
    ES2558444T3|2016-02-04|
    CN103109117B|2016-01-13|
    DK2529134T3|2016-02-15|
    US20120292858A1|2012-11-22|
    JP2013518229A|2013-05-20|
    WO2011092111A3|2013-01-31|
    US10508740B2|2019-12-17|
    EP2529134A2|2012-12-05|
    KR101431187B1|2014-08-18|
    DE102010001345A1|2011-09-15|
    EP2529134B1|2015-12-16|
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    法律状态:
    2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-08-06| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-02-27| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2020-06-23| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-09-08| 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 20/01/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    2021-11-16| B21F| Lapse acc. art. 78, item iv - on non-payment of the annual fees in time|Free format text: REFERENTE A 11A ANUIDADE. |
    2022-03-08| B24J| Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)|Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2654 DE 16-11-2021 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102010001345.5|2010-01-28|
    DE102010001345A|DE102010001345B4|2010-01-28|2010-01-28|Rotary union|
    PCT/EP2011/050769|WO2011092111A2|2010-01-28|2011-01-20|Rotary seal arrangement|
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