CN219101578U

CN219101578U - Anti-rotation mechanism with axial compensation

Info

Publication number: CN219101578U
Application number: CN202223151156.9U
Authority: CN
Inventors: 何鸿斌; 丁晓龙; 曹刚
Original assignee: Hefei Bolin Advanced Materials Co ltd
Current assignee: Hefei Bolin Advanced Materials Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-05-30
Anticipated expiration: 2032-11-25

Abstract

The utility model discloses an anti-rotation mechanism with axial compensation, which comprises a movable orifice plate and a fixed orifice plate connected with the movable orifice plate, and is characterized in that an anti-rotation part is arranged between the movable orifice plate and the fixed orifice plate, and the fixed orifice plate is provided with a compensation part; the anti-rotation part comprises at least three balls, at least three first ball grooves are formed in one side, close to the fixed orifice plate, of the movable orifice plate, the fixed orifice plate comprises a metal plate, at least three second ball grooves are formed in one side, close to the movable orifice plate, of the metal plate, the first ball grooves and the second ball grooves are correspondingly arranged, and the balls are clamped in a containing cavity formed by the first ball grooves and the second ball grooves; the compensation part comprises at least two sliding bearings which are in sliding connection with the fixed pore plate, and the anti-rotation mechanism can be applied to a scroll compressor structure with molded line end face sealing and a scroll compressor structure without molded line end face sealing, has the functions of axial thrust, axial compensation, circumferential limit and radial anti-rotation, and has wide application range.

Description

Anti-rotation mechanism with axial compensation

Technical Field

The utility model relates to the technical field of scroll compressors, in particular to an anti-rotation mechanism with axial compensation.

Background

The scroll compressor is generally composed of a movable scroll, a fixed scroll, an anti-rotation mechanism, an eccentric shaft, a bracket and the like. In the working process, the eccentric shaft drives the movable vortex disc to move, and the movable vortex disc vortex body is meshed with the fixed vortex disc vortex body to gradually compress gas. In the compression process, the rotation of the stop vortex disk is prevented to ensure that the movable vortex disk and the fixed vortex disk are correctly meshed. Meanwhile, in order to ensure that the molded line end face of the vortex plate still has a good sealing effect after being ground, an axial floating mechanism is often required to be arranged, and the worn end face is subjected to sealing compensation. The common anti-rotation mechanism consists of a cross slip ring (also called an Oldham coupling), a cylindrical pin, a special mechanism ball bearing, a small crank shaft and the like, but the structures are basically separated from an axial compensation structure or high-pressure gas in a compression cavity is guided to the back of a movable disc through special design, so that the structure is required to have good tightness, and the maintenance cost is increased.

Disclosure of Invention

The present utility model is directed to an anti-rotation mechanism with axial compensation, so as to solve the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the anti-rotation mechanism with the axial compensation comprises a movable orifice plate and a fixed orifice plate connected with the movable orifice plate, and is characterized in that an anti-rotation part is arranged between the movable orifice plate and the fixed orifice plate, and the fixed orifice plate is provided with a compensation part;

the anti-rotation part comprises at least three balls, at least three first ball grooves are formed in one side, close to the fixed orifice plate, of the movable orifice plate, the fixed orifice plate comprises a metal plate, at least three second ball grooves are formed in one side, close to the movable orifice plate, of the metal plate, the first ball grooves and the second ball grooves are correspondingly arranged, and the balls are clamped in accommodating cavities formed by the first ball grooves and the second ball grooves;

the compensation part comprises at least two sliding bearings which are in sliding connection with the fixed pore plate.

As a further scheme of the utility model: and a sealing ring is arranged at the top end of the molded line of the movable pore plate.

As a further scheme of the utility model: the diameter of the ball is R, the aperture of the first ball groove and the aperture of the second ball groove are 2R, and the groove depth of the first ball groove and the second ball groove is smaller than R/2.

As a further scheme of the utility model: the first ball grooves and the second ball grooves are all provided with a plurality of same quantity, the first ball grooves and the second ball grooves are uniformly distributed, and the accommodating cavities formed by the first ball grooves and the second ball grooves are uniformly distributed with balls.

As a further scheme of the utility model: an elastic plate is arranged on one side, away from the movable pore plate, of the metal plate, and the sliding bearing penetrates through the metal plate.

As a further scheme of the utility model: the metal plate is a steel plate, and the elastic plate is a rubber plate.

As a further scheme of the utility model: the metal plate is provided with a metal plate through hole, the elastic plate through hole is arranged at the corresponding position on the elastic plate, the sliding bearing is inserted in the metal plate through hole, and the inner diameter of the elastic plate through hole is larger than that of the metal plate through hole.

As a further scheme of the utility model: the metal plate through holes are arranged in a plurality, and the metal plate through holes are uniformly distributed, and the metal plate through holes and the second ball grooves are staggered.

Compared with the prior art, the utility model has the beneficial effects that:

1. the anti-rotation mechanism can be applied to the scroll compressor structure with molded line end face seal and without molded line end face seal, has the functions of axial thrust, axial compensation, circumferential limit and radial anti-rotation, and has wide application range.

2. According to the utility model, the elastic plate is provided with a certain precompression when the elastic plate is assembled, so that the movable disc and the fixed disc end face are tightly attached, when the compressor works, high-pressure gas in the compression cavity enables the movable disc and the fixed disc to have a tendency of disengaging, at the moment, the elastic plate is compressed more, but the contact force between the movable disc and the molded line end face of the fixed disc becomes smaller, so that the friction and abrasion time is effectively prolonged, and when the molded line end face is abraded, the rubber pad can provide elasticity for the movable disc to compensate the abrasion of the molded line end face, and the service life of the compressor is effectively prolonged.

Drawings

FIG. 1 is a cross-sectional view of the present embodiment;

FIG. 2 is a top view of the present embodiment;

fig. 3 is a schematic view showing the ball movement state in the present embodiment.

In the figure:

1-a movable pore plate, 11-a first ball groove and 12-a sealing ring;

2-fixed pore plates, 21-metal plates, 22-elastic plates, 23-second ball grooves, 24-metal plate through holes, 25-elastic plate through holes and 26-sliding bearings;

3-ball.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, in an embodiment of the present utility model, an anti-rotation mechanism with axial compensation includes a movable orifice plate 1 and a fixed orifice plate 2 connected to the movable orifice plate 1, wherein a sealing ring 12 is disposed at the top end of the movable orifice plate 1. The movable pore plate 1 is fixedly connected with the movable disk or is of an integral structure.

The anti-rotation part comprises at least three balls 3, at least three first ball grooves 11 are formed in one side, close to the fixed orifice plate 2, of the movable orifice plate 1, the fixed orifice plate 2 comprises a metal plate 21, at least three second ball grooves 23 are formed in one side, close to the movable orifice plate 1, of the metal plate 21, the first ball grooves 11 and the second ball grooves 23 are correspondingly arranged, the balls 3 are clamped in accommodating cavities formed by the first ball grooves 11 and the second ball grooves 23, the diameters of the balls 3 are R, the diameters of the first ball grooves 11 and the second ball grooves 23 are 2R, the groove depths of the first ball grooves 11 and the second ball grooves 23 are smaller than R/2, the first ball grooves 11 and the second ball grooves 23 are all provided with a plurality of first ball grooves 11, the second ball grooves 23 are the same in number, the plurality of first ball grooves 11 and the second ball grooves 23 are evenly distributed, the accommodating cavities formed by each group of the first ball grooves 11 and the second ball grooves 23 are evenly distributed with the balls 3, and in this embodiment, and the first balls 11, the second balls 23 and the sixth balls are all arranged in the first grooves 11 and the second grooves 23.

The fixed orifice plate 2 is provided with a compensation part, the compensation part comprises at least two sliding bearings 26 which are in sliding connection with the fixed orifice plate 2, a pin shaft is sleeved in the sliding bearings 26, the other end of the pin shaft is fixedly connected with a compressor shell support, the fixed orifice plate 2 is further connected with the compressor shell support through the sliding bearings 26 and the pin shaft, the effect that the fixed orifice plate is limited in the circumferential direction and axially floats is achieved, sliding friction can be greatly reduced by the sliding bearings, the reliability of axial floating is improved, an elastic plate 22 is arranged on one side, far away from the movable orifice plate 1, of the metal plate 21, the sliding bearings 26 penetrate through the elastic plate 22, the metal plate 21 is made of steel plates, the elastic plate 22 is made of rubber plates, metal plate through holes 24 are formed in the metal plate 21, elastic plate through holes 25 are formed in corresponding positions on the elastic plate 22, the sliding bearings 26 are spliced in the metal plate through holes 24, the inner diameter of the elastic plate through holes 25 is larger than the inner diameter of the metal plate through holes 24, rubber pads are prevented from being pressed and deformed to squeeze the pin shaft, the axial floating of the movable plate is affected, the metal plate through holes 24 are provided with a plurality of metal plate through holes 24, and the metal plate through holes 24 are evenly distributed, and the metal plate through holes 24 are staggered with the second ball grooves 23.

When the movable orifice plate 1 is in plane whirl, the movable orifice plate 1 and the fixed orifice plate 2 can rotate relatively, namely the first ball groove 11 and the second ball groove 23 can move relatively, and the movable orifice plate and the fixed orifice plate are arranged eccentrically by the eccentric distance R when in installation, so that the balls 3 can be clamped in a containing cavity formed by the first ball groove 11 and the second ball groove 23, the relative movement of the movable orifice plate 1 and the fixed orifice plate 2 is limited by the balls 3, the autorotation can be prevented, the bearing capacity is improved by arranging a plurality of the balls 3, in addition, the fixed orifice plate 2 is also provided with the sliding bearing 26, the pin shaft is inserted into the sliding bearing 26, the fixed orifice plate 2 is fixed circumferentially through the pin shaft, meanwhile, the elastic plate 22 is also arranged outside the metal plate 21, and is in a compressed state when the end face of a movable disc or a fixed disc molded line of the scroll of the compressor is worn, the fixed orifice plate 2 can float axially along the pin shaft under the action of the elastic plate 22, and the axial sealing performance of the movable disc and the movable disc can be further ensured.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The anti-rotation mechanism with the axial compensation comprises a movable orifice plate (1) and a fixed orifice plate (2) connected with the movable orifice plate (1), and is characterized in that an anti-rotation part is arranged between the movable orifice plate (1) and the fixed orifice plate (2), and the fixed orifice plate (2) is provided with a compensation part;

the anti-rotation part comprises at least three balls (3), at least three first ball grooves (11) are formed in one side, close to the fixed orifice plate (2), of the movable orifice plate (1), the fixed orifice plate (2) comprises a metal plate (21), at least three second ball grooves (23) are formed in one side, close to the movable orifice plate (1), of the metal plate (21), the first ball grooves (11) and the second ball grooves (23) are correspondingly arranged, and the balls (3) are clamped in accommodating cavities formed by the first ball grooves (11) and the second ball grooves (23);

the compensation part comprises at least two sliding bearings (26) which are in sliding connection with the fixed orifice plate (2).

2. An anti-rotation mechanism with axial compensation according to claim 1, characterized in that the top end of the molded line of the movable orifice plate (1) is provided with a sealing ring (12).

3. The anti-rotation mechanism with axial compensation according to claim 1, wherein the diameter of the ball (3) is R, the aperture of the first ball groove (11) and the aperture of the second ball groove (23) are 2R, and the groove depth of the first ball groove (11) and the groove depth of the second ball groove (23) are smaller than R/2.

4. The anti-rotation mechanism with axial compensation according to claim 1, wherein the first ball grooves (11) and the second ball grooves (23) are all provided with a plurality of first ball grooves (11) and second ball grooves (23) with the same number, the plurality of first ball grooves (11) and second ball grooves (23) are uniformly arranged, and balls (3) are uniformly distributed in a containing cavity formed by each group of first ball grooves (11) and second ball grooves (23).

5. An anti-rotation mechanism with axial compensation according to claim 1, characterized in that the side of the metal plate (21) remote from the movable orifice plate (1) is provided with an elastic plate (22), the sliding bearing (26) passing through the metal plate (21).

6. An anti-rotation mechanism with axial compensation according to claim 5, characterized in that the metal plate (21) is a steel plate and the elastic plate (22) is a rubber plate.

7. The anti-rotation mechanism with axial compensation according to claim 5, wherein a metal plate through hole (24) is formed in the metal plate (21), an elastic plate through hole (25) is formed in a corresponding position on the elastic plate (22), the sliding bearing (26) is inserted into the metal plate through hole (24), and the inner diameter of the elastic plate through hole (25) is larger than the inner diameter of the metal plate through hole (24).

8. The anti-rotation mechanism with axial compensation according to claim 7, wherein a plurality of through holes (24) are provided, and a plurality of through holes (24) are uniformly arranged, and the through holes (24) are staggered with the second ball grooves (23).