Air suction valve assembly for piston compressor

Abstract

The utility model relates to the technical field of compressors, in particular to an air suction valve assembly for a piston type compressor, which comprises a guide post, a buffer pad, a limiting block, a reset spring, a sealing ring, an air suction valve plate, a second sealing pad, an air suction pipe, a clamping ring and a filter screen, a buffer pad is arranged on the outer side of the guide column, a limiting block is arranged on the top face of the guide column, a reset spring is arranged on the outer side of the guide column, a sealing ring is arranged on the outer side of the guide column, an air suction valve plate is arranged on the outer side of the sealing ring, a second sealing pad is arranged on the top face of the air suction valve plate, a clamping ring is arranged on the inner side of the air suction pipe, and a filter screen is arranged on the bottom face of the clamping ring. Dust sucked into air inside the compressor can be filtered and adsorbed through the filtering structure, abrasion of the dust to the interior of the compressor is avoided, buffering can be provided for the valve plate through the buffering pad, impact force of the gasket is absorbed and offset in the gasket closing process, and the service life of the valve plate is prolonged. Therefore, deformation and damage caused by collision with the valve seat are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to an air suction valve assembly for a piston compressor. Background Art

[0002] A piston compressor is a device that compresses gas by reciprocating the piston in a cylinder. It can generate relatively high pressure and is widely used in machinery manufacturing, chemical industry, petroleum, metallurgy and other industries. In small refrigeration equipment, piston compressors can also serve as the core component of the refrigeration cycle, achieving a cooling effect by compressing the refrigerant gas.

[0003] During the use of existing piston compressors, due to the large amount of dust and other impurities in the air, the air is directly sucked into the compressor, which can easily cause wear inside the compressor and lead to compressor failure. In addition, the suction valve plate constantly collides with the valve seat during opening and closing, which can easily cause the valve plate to deform and affect the normal operation of the compressor.

[0004] Therefore, in order to address the problem that dust in the air is sucked into the compressor and causes internal wear, and the constant collision between the valve plate and the valve seat easily causes the valve plate to deform, an intake valve assembly for a piston compressor can be designed. By setting a filtering structure, the dust in the air sucked into the compressor can be filtered and adsorbed to prevent the dust from causing wear to the interior of the compressor. By setting a buffer pad, a buffer can be provided for the valve plate. During the gasket closing process, the impact of the gasket is absorbed and offset, thereby avoiding collision with the valve seat and causing deformation and damage. Utility Model Content

[0005] In order to overcome the problem that during the use of piston compressors, due to the large amount of dust and other impurities in the air, the air is directly sucked into the compressor, which can easily cause wear on the internal part of the compressor and lead to compressor failure. In addition, the suction valve plate is constantly opening and closing, and collides with the valve seat, which can easily cause the valve plate to deform and affect the normal operation of the compressor.

[0006] The technical solution of the utility model is: an intake valve assembly for a piston compressor, comprising a fixing bolt, a cylinder assembly, a valve seat assembly, a guide column, a buffer pad, a limit block, a return spring, a sealing ring, an intake valve plate, a second sealing gasket, an intake pipe, a connecting head, a clamping ring, a filter and an intake assembly; four groups of fixing bolts are provided, the outer side of the fixing bolt is provided with a cylinder assembly, the top surface of the cylinder assembly is provided with a valve seat assembly, the top surface of the valve seat assembly is provided with a guide column, the outer side of the guide column is provided with a buffer pad, the top surface of the guide column is provided with a limit block, the outer side of the guide column is provided with a return spring, the outer side of the guide column is provided with a sealing ring, the outer side of the sealing ring is provided with an intake valve plate, the top surface of the intake valve plate is provided with a second sealing gasket, the top surface of the valve seat assembly is provided with an intake pipe, the outer side of the intake pipe is provided with a connecting head, the inner side of the intake pipe is provided with a clamping ring, the bottom surface of the clamping ring is provided with a filter, and the outer side of the intake pipe is provided with an intake assembly.

[0007] Preferably, the cylinder assembly can transport the air absorbed by the device into the compressor, and the valve seat assembly can provide support and sealing for the intake valve plate, so that the gas can be smoothly sucked into the cylinder assembly. The guide column can guide the opening and closing of the intake valve plate to ensure the stability of the movement of the intake valve plate. The buffer pad and the limit block can absorb and offset the impact when the intake valve plate is closed to prevent the intake valve plate from being deformed due to excessive pressure. The return spring can assist the intake valve plate in opening and closing. The sealing ring can ensure the sealing between the guide column and the intake valve plate. The second sealing gasket can ensure the sealing between the intake valve plate and the valve seat assembly. The intake pipe can guide the gas into the valve seat assembly, the connecting head can connect the intake pipe with the intake assembly, the clamping ring can provide support for the filter screen, the filter screen can adsorb and filter impurities such as dust in the air, and the intake assembly can guide external gas into the intake pipe.

[0008] Preferably, the cylinder assembly includes a cylinder body, an air intake channel and a first fixing hole; the cylinder body is arranged on the outside of the fixing bolt, the air intake channel is opened on the top surface of the cylinder body, and the first fixing hole is opened on the top surface of the cylinder body, and the first fixing hole is threadedly connected to the fixing bolt.

[0009] Preferably, the valve seat assembly includes an intake valve seat, an intake cavity, a second fixing hole, an air inlet hole, a first sealing gasket and an intake hole; an intake valve seat is provided on the top surface of the cylinder body, an intake cavity is provided inside the intake valve seat, a second fixing hole is provided on the top surface of the intake valve seat, an air inlet hole is provided on the top surface of the intake valve seat, a first sealing gasket is provided on the inner side of the intake cavity, and intake holes are provided on the side of the intake cavity, and multiple groups of intake holes are provided.

[0010] Preferably, a guide column is provided on the top surface of the suction cavity, a limit block is provided on the top surface of the guide column, a buffer pad is provided on the bottom surface of the limit block, and the buffer pad is provided on the outside of the guide column.

[0011] Preferably, one end of the return spring is arranged on the side of the suction chamber, and the other end of the return spring is arranged on the bottom surface of the sealing ring. The sealing ring is slidingly connected to the guide column, and the second sealing gasket is arranged on the outside of the sealing ring.

[0012] Preferably, an air intake pipe is provided on the top surface of the air intake valve seat, a clamping ring is provided on the inner side of the air intake pipe, the clamping ring is engaged with the air intake pipe, and the filter screen is fixedly connected to the bottom surface of the clamping ring.

[0013] Preferably, the air intake assembly includes an external air intake pipe, a connecting groove and an anti-slip strip; an external air intake pipe is provided on the outside of the intake pipe, a connecting groove is provided on the inside of the external air intake pipe, and an anti-slip strip is provided on the outside of the external air intake pipe, and multiple groups of anti-slip strips are provided.

[0014] Beneficial effects of the utility model:

[0015] 1. Use the filter to absorb and filter the dust and other impurities in the gas to prevent the dust from being sucked into the compressor and causing internal wear. When gas needs to be inhaled, the air pressure in the suction chamber decreases, and the external pressure will push the sealing ring to slide downward on the guide column through the suction valve to compress the return spring, thereby opening the suction valve, allowing the gas to enter the suction chamber through the intake hole, and then enter the intake channel through the intake hole. When the gas in the cylinder body needs to be compressed, the pressure in the suction chamber increases. Under the elastic force of the return spring and the suction The air inlet is opened by the second end of the air filter and the air inlet is opened by the air filter, and the air filter is closed by the second air filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the three-dimensional structure of an intake valve assembly for a piston compressor of the present invention;

[0017] Figure 2 Shown is a schematic diagram of the three-dimensional structure of a suction valve assembly and a cylinder assembly for a piston compressor of the present invention;

[0018] Figure 3 Shown is a schematic diagram of the three-dimensional structure of a valve seat assembly of an intake valve assembly for a piston compressor of the present invention;

[0019] Figure 4 Shown is a three-dimensional structural diagram of a gasket structure of an intake valve assembly for a piston compressor of the present invention;

[0020] Figure 5 Shown is a schematic diagram of the three-dimensional structure of a suction valve assembly filter structure for a piston compressor of the present invention;

[0021] Figure 6 Shown is a schematic diagram of the three-dimensional structure of an air intake assembly of an air suction valve assembly for a piston compressor of the present invention;

[0022] Explanation of the accompanying drawings: 1. fixing bolt; 201. cylinder body; 202. air intake channel; 203. first fixing hole; 301. intake valve seat; 302. intake chamber; 303. second fixing hole; 304. intake hole; 305. first sealing gasket; 306. intake hole; 41. guide column; 42. buffer pad; 43. limit block; 51. return spring; 52. sealing ring; 53. intake valve plate; 54. second sealing gasket; 61. intake pipe; 62. connector; 63. retaining ring; 64. filter; 701. external intake pipe; 702. connecting groove; 703. anti-slip strip. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] See also Figures 1-6The utility model provides an embodiment: an air intake valve assembly for a piston compressor, comprising a fixing bolt 1, a cylinder assembly, a valve seat assembly, a guide column 41, a buffer pad 42, a limit block 43, a return spring 51, a sealing ring 52, an air intake valve plate 53, a second sealing pad 54, an air intake pipe 61, a connector 62, a clamping ring 63, a filter screen 64 and an air intake assembly; the fixing bolt 1 is provided with four groups, the outer side of the fixing bolt 1 is provided with a cylinder assembly, the top surface of the cylinder assembly is provided with a valve seat assembly, and the top surface of the valve seat assembly is provided with a There is a guide column 41, a buffer pad 42 is provided on the outside of the guide column 41, a limit block 43 is provided on the top surface of the guide column 41, a return spring 51 is provided on the outside of the guide column 41, a sealing ring 52 is provided on the outside of the guide column 41, an air intake valve plate 53 is provided on the outside of the sealing ring 52, a second sealing gasket 54 is provided on the top surface of the air intake valve plate 53, an air intake pipe 61 is provided on the top surface of the valve seat assembly, a connector 62 is provided on the outside of the air intake pipe 61, a snap ring 63 is provided on the inside of the air intake pipe 61, and a filter is provided on the bottom surface of the snap ring 63. Net 64, an air intake assembly is provided on the outside of the suction pipe 61, the cylinder assembly can transport the air absorbed by the device to the compressor, the valve seat assembly can provide support and sealing for the suction valve plate 53, so that the gas can be smoothly sucked into the cylinder assembly, the guide column 41 can guide the opening and closing of the suction valve plate 53 to ensure the stability of the movement of the suction valve plate 53, the buffer pad 42 and the limit block 43 can absorb and offset the impact of the suction valve plate 53 when it is closed, and prevent the suction valve plate 53 from being deformed due to excessive pressure, and the return spring 51 can assist The intake valve plate 53 is opened and closed, the sealing ring 52 can ensure the sealing between the guide column 41 and the intake valve plate 53, the second sealing gasket 54 can ensure the sealing between the intake valve plate 53 and the valve seat assembly, the intake pipe 61 can guide the gas into the valve seat assembly, the connecting head 62 can connect the intake pipe 61 with the intake assembly, the retaining ring 63 can provide support for the filter screen 64, the filter screen 64 can absorb and filter impurities such as dust in the air, and the intake assembly can guide external gas into the intake pipe 61.

[0025] See also Figures 1-6In this embodiment, the cylinder assembly includes a cylinder body 201, an air intake passage 202 and a first fixing hole 203; the cylinder body 201 is provided on the outside of the fixing bolt 1, the top surface of the cylinder body 201 is provided with an air intake passage 202, the top surface of the cylinder body 201 is provided with a first fixing hole 203, the first fixing hole 203 is threadedly connected to the fixing bolt 1, and the cylinder body 201 is used to provide support for the suction valve seat 301, and the air intake passage 202 is used to facilitate the transportation of the inhaled gas to the interior of the compressor, and the first fixing hole 203 is used to connect the first fixing hole 203 to the first fixing hole 203. 203 is convenient for connecting and fixing the cylinder body 201 with the suction valve seat 301. The valve seat assembly includes the suction valve seat 301, the suction cavity 302, the second fixing hole 303, the air inlet hole 304, the first sealing gasket 305 and the suction hole 306. The top surface of the cylinder body 201 is provided with the suction valve seat 301, the suction cavity 302 is opened inside the suction valve seat 301, the second fixing hole 303 is opened on the top surface of the suction valve seat 301, the air inlet hole 304 is opened on the top surface of the suction valve seat 301, and the inner side of the suction cavity 302 is provided with The first sealing gasket 305 and the side of the suction chamber 302 are provided with suction holes 306, and there are multiple groups of suction holes 306. By rotating the fixing bolt 1 into the second fixing hole 303 and the first fixing hole 203, it is convenient to connect and fix the cylinder body 201 and the suction valve seat 301. The air inlet hole 304 is used to facilitate the flow of gas into the suction chamber 302. The gas in the suction chamber 302 is sucked into the intake channel 202 through the suction hole 306 for transportation. The first sealing gasket 305 is used to increase the sealing performance of the air inlet hole 304. A guide column 41 is provided on the top surface of the suction chamber 302, a limit block 43 is provided on the top surface of the guide column 41, a buffer pad 42 is provided on the bottom surface of the limit block 43, and the buffer pad 42 is provided on the outside of the guide column 41. The guide column 41 is used to guide the opening and closing movement direction of the suction valve plate 53 to ensure the stability of the movement of the suction valve plate 53. The buffer pad 42 and the limit block 43 absorb and offset the impact of the suction valve plate 53 when closing, preventing the suction valve plate 53 from being subjected to excessive pressure and colliding with the inner wall of the suction valve seat 301 to cause deformation.

[0026] See also Figures 1-6In this embodiment, one end of the return spring 51 is arranged on the side of the suction chamber 302, and the other end of the return spring 51 is arranged on the bottom surface of the sealing ring 52. The sealing ring 52 is slidably connected to the guide column 41, and the second sealing gasket 54 is arranged on the outside of the sealing ring 52. When gas needs to be inhaled, the air pressure in the suction chamber 302 is reduced, and the external pressure will push the sealing ring 52 to slide downward on the guide column 41 through the suction valve plate 53 to compress the return spring 51, thereby opening the suction valve plate 53, allowing the gas to enter the suction chamber 302 through the air inlet hole 304, and then enter through the suction hole 306. 301 , the air is compressed and the air is released from the air intake passage 202. When the air in the cylinder body 201 needs to be compressed, the pressure in the air intake chamber 302 increases. Under the action of the elastic force of the return spring 51 and the pressure in the air intake chamber 302, the sealing ring 52 is pushed upward on the guide column 41 through the air intake valve plate 53, thereby quickly closing the air intake valve plate 53. The second sealing gasket 54 on the air intake valve plate 53 and the first sealing gasket 305 on the inner side of the air intake valve seat 301 prevent the gas from overflowing from the air intake hole 304. The top surface of the air intake valve seat 301 is provided with an air intake pipe 61, and a retaining ring 63 is provided on the air intake pipe 61. On the inside, the clamp ring 63 is connected to the intake pipe 61, and the filter screen 64 is fixedly connected to the bottom surface of the clamp ring 63. The filtered gas is guided into the intake chamber 302 through the intake pipe 61. The connector 62 is used to connect and fix the intake pipe 61 to the external intake pipe 701. The clamp ring 63 is used to connect and fix the filter screen 64 to the intake pipe 61, so that the dust and other impurities in the gas can be adsorbed and filtered by the filter screen 64 to prevent the dust from being sucked into the compressor and causing wear on the inside. The intake assembly includes the external intake pipe 701, the connecting groove 702 and the anti-slip strip 7 03; An external air intake pipe 701 is provided on the outside of the air intake pipe 61, and a connecting groove 702 is provided on the inside of the external air intake pipe 701. An anti-slip strip 703 is provided on the outside of the external air intake pipe 701, and multiple groups of anti-slip strips 703 are provided. The external air intake pipe 701 is used to facilitate the guidance of external gas into the air intake pipe 61, and the connecting groove 702 and the connecting head 62 are used to facilitate the threaded connection and fixation of the external air intake pipe 701 and the air intake pipe 61. The anti-slip strip 703 is used to facilitate the disassembly of the external air intake pipe 701, so that the filter 64 can be taken out of the air intake pipe 61 through the retaining ring 63 for cleaning and replacement.

[0027] During operation, the cylinder body 201 is connected and fixed to the air intake valve seat 301 by rotating the fixing bolt 1 into the second fixing hole 303 and the first fixing hole 203. The air intake hole 304 is used to guide the gas into the air intake chamber 302. The gas in the air intake chamber 302 is then sucked into the air intake channel 202 through the air intake hole 306 for transportation.

[0028] The filter 64 is conveniently engaged and fixed to the intake pipe 61 through the clamping ring 63, and the external air intake pipe 701 is conveniently threadedly connected and fixed to the intake pipe 61 through the connecting groove 702 and the connecting head 62. The external air intake pipe 701 is convenient for guiding external air into the intake pipe 61. The anti-slip strip 703 facilitates the disassembly of the external air intake pipe 701, so that the filter 64 can be easily removed from the intake pipe 61 through the clamping ring 63 for cleaning and replacement;

[0029] The filter 64 is used to absorb and filter impurities such as dust in the gas to prevent the dust from being sucked into the compressor and causing internal wear. The filtered gas is guided into the suction chamber 302 through the suction pipe 61.

[0030] When air needs to be inhaled, the air pressure in the air intake chamber 302 decreases, and the external pressure pushes the sealing ring 52 downward on the guide post 41 through the air intake valve plate 53 to compress the return spring 51, thereby opening the air intake valve plate 53, allowing the air to enter the air intake chamber 302 through the air intake hole 304, and then enter the air intake channel 202 through the air intake hole 306;

[0031] When the gas in the cylinder body 201 needs to be compressed, the pressure in the suction chamber 302 increases. Under the action of the elastic force of the return spring 51 and the pressure in the suction chamber 302, the sealing ring 52 is pushed upward on the guide column 41 through the suction valve plate 53, thereby quickly closing the suction valve plate 53. The second sealing gasket 54 on the suction valve plate 53 and the first sealing gasket 305 inside the suction valve seat 301 prevent gas from escaping from the air inlet 304.

[0032] The guide column 41 is used to guide the opening and closing movement direction of the intake valve plate 53 to ensure the stability of the movement of the intake valve plate 53. The buffer pad 42 and the limit block 43 absorb and offset the impact when the intake valve plate 53 is closed, preventing the intake valve plate 53 from being over-pressurized and colliding with the inner wall of the intake valve seat 301, causing deformation.

[0033] Through the above steps, the air absorbed by the device is easily transported to the compressor through the cylinder assembly, the valve seat assembly is used to provide support and sealing for the intake valve plate 53, so that the gas is smoothly sucked into the cylinder assembly, the opening and closing of the intake valve plate 53 are guided by the guide column 41 to ensure the stability of the movement of the intake valve plate 53, the buffer pad 42 and the limit block 43 are used to absorb and offset the impact when the intake valve plate 53 is closed, and prevent the intake valve plate 53 from being deformed due to excessive pressure, and the return spring 51 assists the intake valve plate 53 to open and close. It is opened and closed, and the sealing ring 52 is used to ensure the sealing between the guide column 41 and the intake valve plate 53. The second sealing gasket 54 is used to ensure the sealing between the intake valve plate 53 and the valve seat assembly. The intake pipe 61 is used to guide the gas into the valve seat assembly. The connector 62 is used to facilitate the connection between the intake pipe 61 and the intake assembly. The retaining ring 63 is used to provide support for the filter screen 64. The dust and other impurities in the air are adsorbed and filtered through the filter screen 64, and the intake assembly is used to guide the external gas into the intake pipe 61.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. An air intake valve assembly for a piston compressor, comprising a fixing bolt (1); characterized in that: The invention also includes a cylinder assembly, a valve seat assembly, a guide column (41), a buffer pad (42), a limit block (43), a return spring (51), a sealing ring (52), an air intake valve plate (53), a second sealing pad (54), an air intake pipe (61), a connector (62), a clamping ring (63), a filter screen (64) and an air intake assembly; four groups of fixing bolts (1) are provided, the outer side of the fixing bolts (1) is provided with a cylinder assembly, the top surface of the cylinder assembly is provided with a valve seat assembly, the top surface of the valve seat assembly is provided with a guide column (41), the outer side of the guide column (41) is provided with a buffer pad (42), the guide column (41) is provided with a plurality of fixing bolts (1). ) is provided with a limit block (43) on the top surface, a return spring (51) is provided on the outer side of the guide column (41), a sealing ring (52) is provided on the outer side of the guide column (41), an air intake valve plate (53) is provided on the outer side of the sealing ring (52), a second sealing gasket (54) is provided on the top surface of the air intake valve plate (53), an air intake pipe (61) is provided on the top surface of the valve seat assembly, a connector (62) is provided on the outer side of the air intake pipe (61), a retaining ring (63) is provided on the inner side of the air intake pipe (61), a filter screen (64) is provided on the bottom surface of the retaining ring (63), and an air intake assembly is provided on the outer side of the air intake pipe (61).

2. The suction valve assembly for a piston compressor according to claim 1, characterized in that: The cylinder assembly comprises a cylinder body (201), an air intake passage (202) and a first fixing hole (203); the cylinder body (201) is arranged outside the fixing bolt (1), the top surface of the cylinder body (201) is provided with an air intake passage (202), the top surface of the cylinder body (201) is provided with a first fixing hole (203), and the first fixing hole (203) is threadedly connected to the fixing bolt (1).

3. The suction valve assembly for a piston compressor according to claim 2, characterized in that: The valve seat assembly comprises an intake valve seat (301), an intake cavity (302), a second fixing hole (303), an air inlet hole (304), a first sealing gasket (305) and an intake hole (306); the top surface of the cylinder body (201) is provided with an intake valve seat (301), the interior of the intake valve seat (301) is provided with an intake cavity (302), the top surface of the intake valve seat (301) is provided with a second fixing hole (303), the top surface of the intake valve seat (301) is provided with an air inlet hole (304), the inner side of the intake cavity (302) is provided with a first sealing gasket (305), the side surface of the intake cavity (302) is provided with an intake hole (306), and the intake hole (306) is provided in multiple groups.

4. The suction valve assembly for a piston compressor according to claim 3, characterized in that: A guide column (41) is provided on the top surface of the air suction cavity (302), a limit block (43) is provided on the top surface of the guide column (41), a buffer pad (42) is provided on the bottom surface of the limit block (43), and the buffer pad (42) is provided on the outside of the guide column (41).

5. The suction valve assembly for a piston compressor according to claim 1, characterized in that: One end of the return spring (51) is arranged on the side of the suction chamber (302), and the other end of the return spring (51) is arranged on the bottom surface of the sealing ring (52). The sealing ring (52) is slidably connected to the guide column (41), and the second sealing gasket (54) is arranged on the outside of the sealing ring (52).

6. The suction valve assembly for a piston compressor according to claim 3, characterized in that: The top surface of the air intake valve seat (301) is provided with an air intake pipe (61), a snap ring (63) is provided on the inner side of the air intake pipe (61), the snap ring (63) is snap-connected with the air intake pipe (61), and the filter screen (64) is fixedly connected to the bottom surface of the snap ring (63).

7. The suction valve assembly for a piston compressor according to claim 1, characterized in that: The air intake assembly comprises an external air intake pipe (701), a connecting groove (702) and an anti-slip strip (703); the external air intake pipe (701) is arranged on the outside of the air intake pipe (61), the connecting groove (702) is opened on the inside of the external air intake pipe (701), and the external air intake pipe (701) is provided with an anti-slip strip (703), and multiple groups of anti-slip strips (703) are provided.

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