Piston compressor housing

Abstract

The utility model discloses a piston compressor fuselage belongs to the compressor field, include: fuselage frame, the top of fuselage frame is equipped with top cover board, be equipped with first rubber seal ring between top cover board and fuselage frame, both ends of fuselage frame are equipped with side cover board, be equipped with rubber seal strip between side cover board and fuselage frame, rubber seal strip is in the top cover board and the U-shaped deployment between fuselage frame, both ends of rubber seal strip and first rubber seal ring contact. The utility model can reduce the operating cost of compressor, will not cause the adverse effect to the health of staff, and have good sealing performance.

Description

Technical Field

[0001] This utility model belongs to the field of compressors, specifically relating to a piston compressor body. Background Technology

[0002] Currently, most open-frame reciprocating compressors use asbestos gaskets for sealing the main frame, side covers, top cover, and the flange connections between the transmission components and the compressor body. This sealing structure has the following drawbacks:

[0003] 1. Asbestos gaskets have a short service life; prolonged use can lead to oil seepage and leakage.

[0004] 2. The crankcase is sealed with an asbestos gasket. This gasket softens and deforms, and under pressure from the cover bolts, it easily sticks to the machine's sealing surface. This necessitates replacing the asbestos gasket every time the compressor is inspected, and requires manual labor to scrape and clean off the remaining gasket, increasing operating costs. Furthermore, asbestos gaskets pose a high risk of cancer; during removal, workers are susceptible to inhaling asbestos fibers, which can seriously impact their health. Improper disposal of the removed asbestos gaskets can also cause environmental pollution. Utility Model Content

[0005] The purpose of this invention is to provide a piston compressor body to solve the problems of short sealing time, frequent cleaning, and safety hazards associated with existing asbestos seals.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The present invention provides a piston compressor body, comprising: a body frame, a top cover plate provided on the top of the body frame, a first rubber sealing ring provided between the top cover plate and the body frame, side cover plates provided at both ends of the body frame, a rubber sealing strip provided between the side cover plate and the body frame, the rubber sealing strip being U-shaped and deployed between the top cover plate and the body frame, and both ends of the rubber sealing strip contacting the first rubber sealing ring.

[0007] Preferably, the inner side of the top cover plate is provided with a first sealing groove arranged in a rectangle, and the first rubber sealing ring is placed in the first sealing groove.

[0008] Preferably, the inner side of the side cover plate is provided with a U-shaped second sealing groove, the two ends of the second sealing groove penetrate through the end face of the side cover plate, and the rubber sealing strip is placed in the second sealing groove.

[0009] Preferably, the first rubber sealing ring is bonded to the first sealing groove, and the rubber sealing strip is bonded to the second sealing groove.

[0010] Preferably, a sealing block is connected to the end of the rubber sealing strip, and the length and width of the sealing block are both greater than the width of the rubber sealing strip. An expansion groove adapted to the sealing block is provided on the end face of the side cover plate located at the end of the second sealing groove.

[0011] Preferably, the sealing block has an outwardly protruding protrusion, and the protrusion has a recessed area in the middle for placing the first rubber sealing ring.

[0012] Preferably, the side cover plate is provided with an installation port, a flange is connected to the installation port, and a second rubber sealing ring is provided between the flange and the installation port.

[0013] Preferably, the second rubber sealing ring, the first rubber sealing ring, and the rubber sealing strip are all made of nitrile rubber.

[0014] The beneficial effects of this utility model are:

[0015] 1. The first rubber sealing ring and rubber sealing strip of this utility model have a long service life; compared with the asbestos gasket seal, which requires the asbestos gasket to be replaced every time it is inspected, the first rubber sealing ring and rubber sealing strip do not need to be replaced every time, which can reduce the operating cost of the compressor.

[0016] 2. The first rubber sealing ring and rubber sealing strip of this utility model do not contain harmful substances and will not have an adverse effect on the health of workers;

[0017] 3. The first rubber sealing ring and rubber sealing strip of this utility model have good elasticity and can fit tightly against the sealing surface. Designed with a compression rate of 15-20%, they can generate sufficient sealing pressure to ensure no oil leakage or seepage. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is an exploded schematic diagram of the piston compressor body provided in one embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the assembly of the top cover plate and the first rubber sealing ring according to one embodiment of the present invention;

[0021] Figure 3 yes Figure 1 Enlarged view of part A in the structure shown;

[0022] Figure 4This is a schematic diagram of the structure of the sealing block at the end of the rubber sealing strip provided in one embodiment of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Body frame; 2. Top cover plate; 3. First rubber sealing ring; 4. Side cover plate; 5. Rubber sealing strip; 6. First sealing groove; 7. Second sealing groove; 8. Sealing block; 9. Expansion groove; 10. Protrusion; 11. Recessed area; 12. Mounting port; 13. Flange; 14. Second rubber sealing ring. Detailed Implementation

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0026] Example 1

[0027] Figure 1 This is an exploded view of the piston compressor body according to one embodiment of this utility model. Figure 1 As shown, this embodiment provides a piston compressor body, including: a body frame 1, side cover plates 4 at both ends of the body frame 1, a first rubber sealing ring 3 between the side cover plates 4 and the body frame 1, and a rubber sealing strip 5 between the top cover plate 2 and the body frame 1. The rubber sealing strip 5 is arranged in a U-shape between the top cover plate 2 and the body frame 1, and both ends of the rubber sealing strip 5 are in contact with the first rubber sealing ring 3.

[0028] In this embodiment, the fuselage frame 1 is a large frame with a U-shaped structure. Side cover plates 4 are provided on both sides of the fuselage frame 1, and a top cover plate 2 is provided on the top. The fuselage of this embodiment is installed as follows: first, the two side cover plates 4 are installed on both sides of the fuselage frame 1 with bolts, and then the top cover plate 2 is installed on the top of the fuselage frame 1 with bolts. Several screw holes for installing the top cover plate 2 are provided on the top surface of the fuselage frame 1. Similarly, several screw holes for installing the top cover plate 2 are also provided on the top surface of the side cover plates 4.

[0029] Therefore, in this embodiment, the first rubber sealing ring 3 is annular. When the top cover plate 2 is installed on the top of the body frame 1 by bolts, the first rubber sealing ring 3 is arranged in a rectangular shape, that is, arranged along the rectangular area formed by the top surface of the body frame 1 and the top surface of the side cover plate 4. After the top cover plate 2 is installed, the first rubber sealing ring 3 is pressed into the rectangular area to achieve a seal between the top cover plate 2 and the body frame 1.

[0030] In this embodiment, the first rubber sealing ring 3 has an O-shaped cross section and is made of nitrile rubber. Under normal conditions, the service life of the first rubber sealing ring 3 is usually 5-10 years, and the temperature range is between -40℃ and 120℃, while the maximum temperature of the machine body lubricating oil is <78℃.

[0031] In this embodiment, the cross-section of the rubber sealing strip 5 is also O-shaped and is also made of nitrile rubber. The service life of the rubber sealing strip 5 under normal conditions is usually 5-10 years. Nitrile rubber (NBR) has an elastic recovery rate of ≥90%, which can fit tightly to the sealing surface. Designed with a compression rate of 15-20%, it can generate sufficient sealing pressure to ensure no oil leakage or seepage.

[0032] In this embodiment, the rubber sealing strip 5 has a U-shaped structure, which is the same as the U-shaped structure of the fuselage frame 1. At this time, the rubber sealing strip 5 can be placed on both sides of the fuselage frame 1, and the side cover plate 4 presses the rubber sealing strip 5 tightly on the side of the fuselage frame 1 to achieve a seal between the side cover plate 4 and the fuselage frame 1.

[0033] To ensure that the gap at the junction of the fuselage frame 1, top cover 2, and side cover 4 can be sealed, this embodiment designs the rubber sealing strip 5 as a U-shaped structure, and the end of the rubber sealing strip 5 is connected to the first rubber sealing ring 3. Therefore, when installed on the top cover 2, the first rubber sealing ring 3 will be pressed on the end of the rubber sealing strip 5, and the first rubber sealing ring 3 and the rubber sealing strip 5 will be in close contact. At this time, the first rubber sealing ring 3 and the rubber sealing strip 5 form a closed loop, thereby sealing the gap at the junction of the fuselage frame 1, top cover 2, and side cover 4, and ensuring the sealing of the three large cross sections (the top surface and the two side surfaces) of the fuselage frame 1.

[0034] Therefore, the first rubber sealing ring 3 and the rubber sealing strip 5 in this embodiment do not contain harmful substances and will not have an adverse effect on the health of the staff. Moreover, compared with the asbestos gasket seal, which requires the asbestos gasket to be replaced every time it is inspected, the first rubber sealing ring 3 and the rubber sealing strip 5 do not need to be replaced every time, which can reduce the operating cost of the compressor.

[0035] Example 2

[0036] Based on Embodiment 1, the side cover plate 4 of this embodiment is provided with an installation port 12, a flange 13 is connected to the installation port 12, and a second rubber sealing ring 14 is provided between the flange 13 and the installation port 12.

[0037] In this embodiment, the flange 13 is used to connect the oil pump. The cross-section of the second rubber sealing ring 14 is also O-shaped and is also made of nitrile rubber. In this embodiment, the second rubber sealing ring 14 can be directly fitted onto the flange 13. One side of the flange 13 is inserted into the mounting port 12, and then the flange 13 is fixed to the side cover plate 4 with bolts.

[0038] Example 3

[0039] Based on Embodiment 1, to facilitate the installation of the first rubber sealing ring 3 and the rubber sealing strip 5; as follows: Figure 2 As shown, in this embodiment, a first sealing groove 6 arranged in a rectangle is provided on the inner side of the top cover plate 2, and the first rubber sealing ring 3 is placed in the first sealing groove 6. In this embodiment, the width of the first sealing groove 6 can be slightly smaller than the diameter of the first rubber sealing ring 3. When the first rubber sealing ring 3 is placed in the first sealing groove 6, the first rubber sealing ring 3 and the first sealing groove 6 form an interference fit, which makes it more convenient to install the top cover plate 2 and the first sealing ring.

[0040] Secondly, the width of the first sealing groove 6 can be adapted to the diameter of the first rubber sealing ring 3. In order to prevent the first rubber sealing ring 3 from falling out of the first sealing groove 6, the first rubber sealing ring 3 can be fixed in the first sealing groove 6 by adhesive bonding. For example, acrylic glue, solvent-based rubber adhesive, phenolic-nitrile resin adhesive, epoxy-nitrile toughened adhesive, etc. can be used for bonding. In this embodiment, solvent-based rubber adhesive is preferred because it has strong oil resistance, high temperature resistance (148°C), and is suitable for complex bonding.

[0041] like Figure 1 As shown, in this embodiment, a U-shaped second sealing groove 7 is provided on the inner side of the side cover plate 4. The two ends of the second sealing groove 7 penetrate through the end face of the side cover plate 4, and the rubber sealing strip 5 is placed in the second sealing groove 7. Similarly, the rubber sealing strip 5 can be fixed in the second sealing groove 7 by an interference fit or by adhesive bonding.

[0042] In this embodiment, since the two ends of the second sealing groove 7 penetrate the end face of the side cover plate 4, and this end face is a surface that contacts the top cover plate 2, the end of the rubber sealing strip 5 can be slightly extended into the second sealing groove 7 to ensure that after the top cover plate 2 is installed, the first rubber sealing ring 3 on the top cover plate 2 can contact the end of the rubber sealing strip 5.

[0043] Example 4

[0044] In Embodiment 3, because the cross-section of the rubber sealing strip 5 is O-shaped, when the end of the rubber sealing strip 5 contacts the first rubber sealing ring 3, due to the elasticity of the rubber sealing strip 5, as the top cover plate 2 is pressed, the rubber sealing strip 5 will shrink into the second sealing groove 7, reducing the contact area between the rubber sealing strip 5 and the first rubber sealing ring 3. When the pressure inside the machine body is too high, the rubber sealing strip 5 will continue to shrink, causing the sealing between the rubber sealing strip 5 and the first rubber sealing ring 3 to fail. Therefore, in order to improve the sealing performance of the contact area between the rubber sealing strip 5 and the first rubber sealing ring 3, such as... Figure 3 and Figure 4 As shown, the end of the rubber sealing strip 5 is connected to a sealing block 8. The length and width of the sealing block 8 are both greater than the width of the rubber sealing strip 5. An expansion groove 9 that matches the sealing block 8 is provided on the end face of the side cover plate 4 located at the end of the second sealing groove 7.

[0045] In this embodiment, the expansion groove 9 is a groove opened on the end face of the side cover plate 4. The width and depth of the groove are both greater than the width and depth of the second sealing groove 7. This groove is connected to the second sealing groove 7, and the two are connected together to form a T-shaped structure. In this embodiment, the rubber sealing strip 5 can be fixed in the second sealing groove 7 by adhesive bonding, while the sealing block 8 is placed directly in the expansion groove 9.

[0046] At this time, compared with the end face of the rubber sealing strip 5, the contact area between the sealing block 8 and the first rubber sealing ring 3 is larger. Since the sealing block 8 is larger, after the top cover plate 2 is installed, the sealing block 8 can still contact the top cover plate 2. At this time, the sealing performance of the contact part between the rubber sealing strip 5 and the first rubber sealing ring 3 is stronger, and the sealing failure is less likely to occur.

[0047] As a further optimization of this embodiment, the sealing block 8 is provided with an outwardly protruding protrusion 10, and the protrusion 10 is provided with a recessed area 11 in the middle for placing the first rubber sealing ring 3.

[0048] In this embodiment, the protrusion 10 and the sealing block 8 can be integrally formed, and the sealing block 8 is also made of nitrile rubber. When the top cover plate 2 is placed in the mounting position on the body frame 1, the first rubber sealing ring 3 is located in the recessed area 11. During the process of pressing the top cover plate 2, the first rubber sealing ring 3 will press down on the protrusion 10 of the sealing block 8 in the recessed area 11. The protrusion 10 deforms and covers the first rubber sealing ring 3, which can further increase the contact area between the first rubber sealing ring 3 and the sealing block 8. At the same time, the deformation of the protrusion 10 will move towards the gap area between the expansion groove 9 and the top cover plate 2, sealing any possible gaps and further improving the sealing performance.

[0049] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A piston compressor casing, characterized in that, include: The fuselage frame (1) has a top cover plate (2) on its top, a first rubber sealing ring (3) between the top cover plate (2) and the fuselage frame (1), side cover plates (4) at both ends of the fuselage frame (1), and a rubber sealing strip (5) between the side cover plate (4) and the fuselage frame (1). The rubber sealing strip (5) is arranged in a U-shape between the top cover plate (2) and the fuselage frame (1), and both ends of the rubber sealing strip (5) are in contact with the first rubber sealing ring (3).

2. The piston compressor housing according to claim 1, characterized in that, The inner side of the top cover plate (2) is provided with a first sealing groove (6) arranged in a rectangle, and the first rubber sealing ring (3) is placed in the first sealing groove (6).

3. The piston compressor housing according to claim 2, characterized in that, The inner side of the side cover plate (4) is provided with a U-shaped second sealing groove (7), the two ends of the second sealing groove (7) penetrate through the end face of the side cover plate (4), and the rubber sealing strip (5) is placed in the second sealing groove (7).

4. The piston compressor housing according to claim 3, characterized in that, The first rubber sealing ring (3) is bonded to the first sealing groove (6), and the rubber sealing strip (5) is bonded to the second sealing groove (7).

5. The piston compressor housing according to claim 3, characterized in that, The end of the rubber sealing strip (5) is connected to a sealing block (8). The length and width of the sealing block (8) are both greater than the width of the rubber sealing strip (5). An expansion groove (9) adapted to the sealing block (8) is provided on the end face of the side cover plate (4) located at the end of the second sealing groove (7).

6. The piston compressor housing according to claim 5, characterized in that, The sealing block (8) has an outwardly protruding protrusion (10), and the protrusion (10) has a recessed area (11) in the middle for placing the first rubber sealing ring (3).

7. The piston compressor housing according to claim 1, characterized in that, The side cover plate (4) is provided with an installation port (12), and a flange (13) is connected to the installation port (12). A second rubber sealing ring (14) is provided between the flange (13) and the installation port (12).

8. The piston compressor housing according to claim 7, characterized in that, The second rubber sealing ring (14), the first rubber sealing ring (3) and the rubber sealing strip (5) are all made of nitrile rubber.

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