Wear-resistant adjustable sealing element

Abstract

The utility model relates to the technical field of sealing elements, and discloses a wear-resistant adjustable sealing element which comprises a device shell, an annular cavity is formed in the device shell, a rotating disc is rotationally installed in the annular cavity, a plurality of arc-shaped sliding grooves are evenly formed in the rotating disc in the circumferential direction, and sliding shafts are arranged in the arc-shaped sliding grooves in a sliding mode. A connecting rod is installed on the sliding shaft, arc-shaped extending blocks are installed at the end, away from the device shell, of the connecting rod, and annular teeth are arranged on the side, away from the arc-shaped sliding grooves, of the rotating disc. By rotating a driving gear, a rotating disc can be driven to rotate in an annular cavity through annular teeth, so that a plurality of sliding shafts can slide along corresponding arc-shaped sliding grooves, the purpose that a plurality of connecting rods are away from one another synchronously is achieved, a plurality of arc-shaped extending blocks are away from one another synchronously, and a sealing rubber ring is pressed tightly; therefore, the purpose of adjusting the sealing performance is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing elements, in particular to a wear-resistant adjustable sealing element. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

[0003] Since a certain amount of lubricating oil needs to be added to the inside of the bearing, in order to prevent the lubricating oil inside the bearing from being thrown out when the bearing rotates, both sides of the bearing are generally sealed with seals to seal the lubricating oil inside the bearing.

[0004] Since sealing is usually performed using a sealing rubber ring, excessive extrusion pressure during use will reduce the service life of the sealing rubber ring, while excessive extrusion pressure will cause the sealing effect of the sealing rubber ring to deteriorate. The extrusion pressure is usually generated by the extrusion between two workpieces, and the extrusion pressure is fixed and cannot be adjusted, which will reduce the service life of the sealing rubber ring or deteriorate the sealing effect of the sealing rubber ring. Summary of the invention

[0005] Technical issues solved

[0006] In view of the deficiencies in the prior art, the utility model provides a wear-resistant adjustable seal to solve the above technical problems.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wear-resistant adjustable seal, comprising a device shell, an annular cavity is provided in the device shell, a rotating disk is rotatably installed in the annular cavity, a plurality of arc-shaped grooves are evenly provided on the rotating disk along the circumferential direction, a sliding shaft is slidably arranged in the arc-shaped groove, a connecting rod is installed on the sliding shaft, an arc-shaped protruding block is installed at one end of the connecting rod away from the device shell, annular teeth are arranged on the side of the rotating disk away from the arc-shaped groove, a driving gear matched with the annular teeth is rotatably installed in the annular cavity, an arc-shaped groove is provided on the outer side of the arc-shaped protruding block, and a storage groove matched with the arc-shaped protruding block is provided on the outer side of the device shell.

[0008] Preferably, a plurality of self-locking tooth blocks are evenly arranged along the circumferential direction on one side of the rotating disk away from the arc-shaped sliding groove, and the cross-section of the self-locking tooth blocks is triangular.

[0009] Preferably, a plurality of fixed sleeves are evenly arranged along the circumferential direction on the inner wall of one side of the annular cavity, a sliding block is slidably arranged in the fixed sleeve, a return spring is arranged in the fixed sleeve, one end of the return spring is installed in the fixed sleeve, and the other end of the return spring is installed on the sliding block.

[0010] Preferably, one end of the plurality of sliding blocks away from the fixed sleeve is respectively pressed against a side inclined surface of the plurality of self-locking tooth blocks.

[0011] Preferably, the inclined surfaces at one end of a plurality of the self-locking tooth blocks are parallel to the corresponding sliding blocks, and the inclined surfaces at the other end are perpendicular to the corresponding sliding blocks.

[0012] Preferably, an adjusting knob is rotatably mounted on one side of the device housing, and the adjusting knob passes through the device housing and is connected to the driving gear.

[0013] Preferably, a plurality of through holes are opened in the annular cavity along the circumferential direction, and the size of the through holes is adapted to the connecting rod.

[0014] Compared with the prior art, the utility model provides a wear-resistant adjustable seal, which has the following beneficial effects:

[0015] The utility model cooperates with the structures such as the rotating disk, the annular gear and the driving gear, so that the sealing rubber ring can be sleeved in the arc grooves on the plurality of arc-shaped protruding blocks when in use, and the rotating disk can be driven to rotate in the annular cavity through the annular gear by rotating the driving gear, so that the plurality of sliding shafts can slide along the corresponding arc-shaped sliding grooves, and the purpose of synchronously moving the plurality of connecting rods away from each other can be achieved, and then the plurality of arc-shaped protruding blocks can be synchronously moved away from each other, and the sealing rubber ring can be compressed, so as to achieve the purpose of adjusting the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the device of the utility model;

[0017] Figure 2 It is a cross-sectional structural diagram of the ring gear and driving gear of the utility model;

[0018] Figure 3 It is a schematic cross-sectional structure diagram of the arc-shaped extension block and the connecting rod and other structures of the utility model;

[0019] Figure 4 It is a side cross-sectional structural schematic diagram of the sliding shaft, the connecting rod and the arc-shaped extension block of the utility model.

[0020] Among them: 1. device housing; 2. connecting rod; 3. arc-shaped extension block; 4. through hole; 5. rotating disk; 6. annular teeth; 7. self-locking tooth block; 8. fixed sleeve; 9. sliding block; 10. driving gear; 11. reset spring; 12. arc-shaped slide groove; 13. annular cavity; 14. sliding shaft; 15. arc-shaped groove; 16. storage groove. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-4 A wear-resistant adjustable seal comprises a device housing 1, an annular cavity 13 is provided in the device housing 1, a rotating disk 5 is rotatably installed in the annular cavity 13, a plurality of arc-shaped grooves 12 are evenly provided on the rotating disk 5 along the circumferential direction, a sliding shaft 14 is slidably arranged in the arc-shaped groove 12, a connecting rod 2 is installed on the sliding shaft 14, an arc-shaped extension block 3 is installed at one end of the connecting rod 2 away from the device housing 1, an annular tooth 6 is arranged on the side of the rotating disk 5 away from the arc-shaped groove 12, a driving gear 10 adapted to the annular tooth 6 is rotatably installed in the annular cavity 13, an arc-shaped groove 15 is provided on the outer side of the arc-shaped extension block 3, and a receiving groove 16 adapted to the arc-shaped extension block 3 is provided on the outer side of the device housing 1.

[0025] By the mutual cooperation of the structures such as the rotating disk 5, the annular gear 6 and the driving gear 10, the sealing rubber ring can be sleeved in the arc groove 15 on the plurality of arc-shaped protruding blocks 3 when in use, and the rotating disk 5 can be driven to rotate in the annular cavity 13 through the annular gear 6 by rotating the driving gear 10, so that the plurality of sliding shafts 14 can slide along the corresponding arc-shaped sliding grooves 12, and the purpose of the plurality of connecting rods 2 being synchronously moved away from each other is achieved, and then the plurality of arc-shaped protruding blocks 3 are synchronously moved away from each other, and the sealing rubber ring is compressed, so as to achieve the purpose of adjusting the sealing performance.

[0026] Specifically, in the present embodiment, a plurality of self-locking tooth blocks 7 are evenly arranged along the circumferential direction on one side of the rotating disk 5 away from the arc-shaped slide groove 12, and the cross-section of the self-locking tooth block 7 is triangular. A plurality of fixed sleeves 8 are evenly arranged along the circumferential direction on the inner wall of one side of the annular cavity 13, and a sliding block 9 is slidably arranged in the fixed sleeve 8. A return spring 11 is arranged in the fixed sleeve 8, and one end of the return spring 11 is installed in the fixed sleeve 8, and the other end of the return spring 11 is installed on the sliding block 9. One end of the plurality of sliding blocks 9 away from the fixed sleeve 8 is respectively pressed against the inclined surfaces of one side of the plurality of self-locking tooth blocks 7, and the inclined surfaces at one end of the plurality of self-locking tooth blocks 7 are parallel to the corresponding sliding blocks 9, and the inclined surfaces at the other end are perpendicular to the corresponding sliding blocks 9.

[0027] By cooperating with the self-locking tooth block 7 and the fixed sleeve 8, the sliding block 9 and the reset spring 11, when the rotating disk 5 rotates, the inclined surface of the self-locking tooth block 7 can be pressed against the sliding block 9, and the sliding block 9 can slide into the fixed sleeve 8 and squeeze the reset spring 11, and the elastic potential energy of the reset spring 11 can push the sliding block 9 to return and press against the next self-locking tooth block 7, and when the rotating disk 5 rotates in the opposite direction, the other inclined surface of the adjacent self-locking tooth block 7 can be pressed against the side of the sliding block 9, thereby limiting the rotation direction of the rotating disk 5 and realizing the self-locking function.

[0028] Specifically, in this embodiment, an adjusting knob is rotatably mounted on one side of the device housing 1 , and the adjusting knob passes through the device housing 1 and is connected to the driving gear 10 , so that the driving gear 10 can be driven to rotate conveniently through the setting of the adjusting knob.

[0029] Specifically, in this embodiment, a plurality of through holes 4 are opened in the annular cavity 13 along the circumferential direction, and the size of the through holes 4 is adapted to the connecting rod 2 .

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant adjustable seal, comprising a device housing, characterized in that: An annular cavity is provided in the device shell, a rotating disk is rotatably installed in the annular cavity, a plurality of arc-shaped grooves are evenly provided on the rotating disk along the circumferential direction, a sliding shaft is slidably arranged in the arc-shaped groove, a connecting rod is installed on the sliding shaft, an arc-shaped extension block is installed at one end of the connecting rod away from the device shell, annular teeth are arranged on the side of the rotating disk away from the arc-shaped groove, a driving gear matched with the annular teeth is rotatably installed in the annular cavity, an arc-shaped groove is provided on the outer side of the arc-shaped extension block, and a storage groove matched with the arc-shaped extension block is provided on the outer side of the device shell.

2. A wear-resistant adjustable seal according to claim 1, characterized in that: A plurality of self-locking tooth blocks are evenly arranged along the circumferential direction on one side of the rotating disk away from the arc-shaped sliding groove, and the cross section of the self-locking tooth blocks is a triangle.

3. A wear-resistant adjustable seal according to claim 1, characterized in that: A plurality of fixed sleeves are evenly arranged along the circumferential direction on the inner wall of one side of the annular cavity, a sliding block is slidably arranged in the fixed sleeve, a return spring is arranged in the fixed sleeve, one end of the return spring is installed in the fixed sleeve, and the other end of the return spring is installed on the sliding block.

4. A wear-resistant adjustable seal according to claim 3, characterized in that: One end of a plurality of the sliding blocks away from the fixed sleeve is respectively pressed against a side inclined surface of a plurality of the self-locking tooth blocks.

5. The wear-resistant adjustable seal according to claim 2, characterized in that: The inclined surfaces at one end of the plurality of self-locking tooth blocks are parallel to the corresponding sliding blocks, and the inclined surfaces at the other end are perpendicular to the corresponding sliding blocks.

6. The wear-resistant adjustable seal according to claim 1, characterized in that: An adjusting knob is rotatably mounted on one side of the device housing, and the adjusting knob passes through the device housing and is connected with the driving gear.

7. The wear-resistant adjustable seal according to claim 1, characterized in that: A plurality of through holes are provided in the annular cavity along the circumferential direction, and the sizes of the through holes are adapted to the connecting rods.

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