Piston body of a compressor

Abstract

The application discloses a piston body of a compressor, which comprises an outer ring, wherein the upper part of the outer ring is provided with an upper end adjusting frame structure; the lower part of the outer ring is provided with a lower end plate; the outer side of the outer ring is provided with a piston ring groove; the piston ring groove is provided with a piston sealing frame structure; the lower part of the lower end plate is fixedly connected with a valve head; the lower part of the valve head is movably connected with a piston rod; and the lower part of the piston rod is provided with a shaft rod. According to the application, the adjusting gasket can be screw-connected to the inner side of the buffer cavity according to requirements, so that the compression space during the upper part of the piston body is adjusted conveniently; after the threaded rod is installed in the buffer cavity, the limiting cover can limit the adjusting gasket, and the adjusting gasket is prevented from falling outward easily.

Description

Technical Field

[0001] This invention belongs to the field of piston body technology, and particularly relates to a piston body for a compressor. Background Technology

[0002] A compressor is a driven fluid machine that elevates low-pressure gas to high-pressure gas; it is the heart of a refrigeration system. It draws in low-temperature, low-pressure refrigerant gas through a suction pipe, compresses it via a piston driven by a motor, and then discharges high-temperature, high-pressure refrigerant gas through a discharge pipe, providing power for the refrigeration cycle. An existing compressor piston body, and the piston body of this utility model compressor, includes a bushing that can be fitted onto a piston rod shaft. The bushing has an annular upper end plate and an annular lower end plate at its two ends, respectively. An outer ring is welded to the edges of the upper and lower end plates, and the outer ring is concentrically arranged with the bushing. Several ribs are arranged between the bushing and the outer ring, with the edges of the ribs simultaneously welded to the upper end plate, lower end plate, bushing, and outer ring. However, this design does not allow for adjustment of the compression space when used for different compression requirements, and the sealing effect at the piston connection is poor. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a piston body for a compressor, which has a simple structure, improves sealing performance during use, allows for easy adjustment of the compression space, and increases the overall strength of the piston body.

[0004] The technical solution is as follows: a piston body for a compressor, including an outer ring, characterized in that an upper adjusting frame structure is installed on the upper part of the outer ring; a lower end plate is installed on the lower part of the outer ring; a piston ring groove is provided on the outer side of the outer ring; a piston sealing frame structure is provided between the piston ring grooves; a valve head is fixedly connected to the lower part of the lower end plate; a piston rod is movably connected to the lower part of the valve head; and a shaft is provided at the lower part of the piston rod.

[0005] Preferably, the upper adjustment frame structure includes an upper end plate, and a buffer cavity is welded to the middle position of the upper end plate; an adjustment shim is threadedly connected to the inner side of the buffer cavity; a straight rotating groove is formed in the upper middle part of the adjustment shim; and a limit protection frame structure is provided on the upper side of the inner wall of the buffer cavity.

[0006] Preferably, the limiting protective frame structure includes a limiting cover, and a threaded rod is welded to the rear side of the limiting cover; a cross-shaped groove is opened on the front side of the limiting cover.

[0007] Preferably, the piston seal holder structure includes a sealing ring; the inner ring of the sealing ring is fitted with a rubber sleeve.

[0008] Preferably, a reinforcing plate is welded to the inner side of the outer ring; a reinforcing ring is welded to the end of the reinforcing plate away from the outer ring.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0010] In this invention, the adjusting shim can be threaded onto the inner side of the buffer cavity as needed, thereby facilitating the adjustment of the compression space during the compression of the upper part of the piston body.

[0011] In this invention, after the threaded rod is installed in the buffer cavity, the limiting cover can limit the adjustment shim and prevent the adjustment shim from easily falling outward.

[0012] In this invention, the use of a rubber sleeve in conjunction with a sealing ring can increase the sealing effect when the piston moves within the compression chamber. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention.

[0014] Figure 2 This is a cross-sectional view of the outer ring of the piston of the present invention.

[0015] Figure 3 This is a schematic diagram of the upper adjustment frame structure of the present invention.

[0016] Figure 4 This is a schematic diagram of the piston seal holder structure of the present invention.

[0017] Figure 5 This is a schematic diagram of the limiting and protective frame structure of the present invention.

[0018] Figures 1 to 5 middle:

[0019] 1. Outer ring; 11. Reinforcing plate; 12. Reinforcing ring; 2. Upper adjustment frame structure; 21. Upper end plate; 22. Buffer chamber; 23. Adjusting shim; 24. One-line rotating groove; 25. Limiting and protective frame structure; 251. Limiting cover; 252. Threaded rod; 253. Cross-shaped groove; 3. Lower end plate; 4. Piston ring groove; 5. Piston sealing frame structure; 51. Sealing ring; 52. Rubber sleeve; 6. Valve head; 7. Piston rod; 8. Shaft. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] As attached Figure 1 and attached Figure 3As shown, the piston body of a compressor according to the present invention includes an outer ring 1. The outer ring 1 is characterized by having an upper adjusting bracket structure 2 mounted on its upper part; a lower end plate 3 mounted on its lower part; a piston ring groove 4 on the outer side of the outer ring 1; a piston sealing bracket structure 5 between the piston ring grooves 4; a valve head 6 fixedly connected to the lower part of the lower end plate 3; a piston rod 7 movably connected to the lower part of the valve head 6; and a shaft 8 at the lower part of the piston rod 7. The upper adjusting bracket structure 2 includes an upper end plate 21, with a buffer cavity 22 welded to its middle position. An adjusting shim 23 is threadedly connected to the inner side of the buffer cavity 22. A slotted rotating groove 24 is formed in the upper middle part of the adjusting shim 23. A limit protection bracket structure 25 is provided on the upper side of the inner wall of the buffer cavity 22, allowing the adjusting shim 23 to be threadedly connected to the inner side of the buffer cavity 22 as needed, thereby facilitating the adjustment of the compression space during piston compression.

[0022] As attached Figure 5 As shown in the above embodiment, specifically, the limiting protective frame structure 25 includes a limiting cover 251, and a threaded rod 252 is welded to the rear side of the limiting cover 251; a cross-shaped groove 253 is opened on the front side of the limiting cover 251. After the threaded rod 252 is installed in the buffer cavity 22, the limiting cover 251 can limit the adjusting shim 23 and prevent the adjusting shim 23 from easily falling outward.

[0023] As attached Figure 4 As shown in the above embodiment, specifically, the piston sealing frame structure 5 includes a sealing ring 51; the inner ring of the sealing ring 51 is fitted with a rubber sleeve 52, and the rubber sleeve 52, in conjunction with the sealing ring 51, can increase the sealing effect when the piston moves in the compression chamber.

[0024] As attached Figure 2 As shown in the above embodiment, specifically, a reinforcing plate 11 is welded to the inner side of the outer ring 1; a reinforcing ring 12 is welded to the end of the reinforcing plate 11 away from the outer ring 1. The cooperation between the reinforcing plate 11 and the reinforcing ring 12 can increase the overall strength of the outer ring and prevent the outer ring from easily deforming and being damaged when subjected to high pressure.

[0025] In the above embodiments, specifically, the threaded rod 252 is threadedly connected to the upper side of the inner wall of the buffer cavity 22.

[0026] In the above embodiment, specifically, the upper end plate 21 is welded to the upper part of the outer ring 1.

[0027] In the above embodiments, specifically, the sealing ring 51 and the rubber sleeve 52 are respectively fitted onto the inner side of the piston ring groove 4.

[0028] Working principle

[0029] During operation, the adjusting shim 23 can be threaded onto the inner side of the buffer chamber 22 as needed. Then, the threaded rod 252 is threaded onto the inner side of the buffer chamber 22 to limit the adjusting shim 23. The rubber sleeve 52, in conjunction with the sealing ring 51, can increase the sealing effect at the connection between the piston body and the inner wall of the compression chamber. The cooperation between the reinforcing plate 11 and the reinforcing ring 12 can increase the overall strength of the outer ring and prevent the outer ring from easily deforming and being damaged when subjected to high pressure.

[0030] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solutions described in this invention, or by designing similar technical solutions by those skilled in the art under the inspiration of the technical solutions described in this invention, falls within the protection scope of this invention.

Claims

1. A piston body for a compressor, comprising an outer ring (1), characterized in that, The upper part of the outer ring (1) is equipped with an upper adjustment frame structure (2); the lower part of the outer ring (1) is equipped with a lower end plate (3); a piston ring groove (4) is provided on the outer side of the outer ring (1); a piston sealing frame structure (5) is provided between the piston ring grooves (4); a valve head (6) is fixedly connected to the lower part of the lower end plate (3); a piston rod (7) is movably connected to the lower part of the valve head (6); a shaft (8) is provided at the lower part of the piston rod (7); the upper adjustment frame structure (2) includes an upper end plate (21), the upper end plate ( A buffer cavity (22) is welded in the middle of the buffer cavity (21); an adjusting shim (23) is threadedly connected to the inner side of the buffer cavity (22); a straight rotating groove (24) is opened on the upper end face of the adjusting shim (23); a limit protection frame structure (25) is provided on the upper side of the inner wall of the buffer cavity (22); the limit protection frame structure (25) includes a limit cover (251), a threaded rod (252) is welded to the rear side of the limit cover (251); a cross-shaped groove (253) is opened on the front side of the limit cover (251); The piston sealing frame structure (5) includes a sealing ring (51); the inner ring of the sealing ring (51) is fitted with a rubber sleeve (52).

2. The piston body of the compressor as described in claim 1, characterized in that, A reinforcing plate (11) is welded to the inner side of the outer ring (1); a reinforcing ring (12) is welded to the end of the reinforcing plate (11) away from the outer ring (1).

3. The piston body of the compressor as described in claim 1, characterized in that, The threaded rod (252) is threaded to the upper side of the inner wall of the buffer cavity (22).

4. The piston body of the compressor as described in claim 1, characterized in that, The upper end plate (21) is welded to the upper part of the outer ring (1).

5. The piston body of the compressor as described in claim 1, characterized in that, The sealing ring (51) and the rubber sleeve (52) are respectively fitted inside the piston ring groove (4).

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