Air cylinder piston assembly of gas compressor

Abstract

The utility model relates to the technical field of piston assemblies, in particular to a gas compressor cylinder piston assembly which comprises a piston rod, a piston plate is arranged on the lower side of the piston rod, a fixing piece is installed on the piston plate in a threaded connection mode, the middle of the fixing piece is hollow, and the inner side face of the fixing piece is an inclined face. And extrusion blocks are slidably connected to the piston plate at equal intervals in the circumferential direction, and the extrusion blocks distributed at equal intervals in the circumferential direction are located on the inner side of the fixing piece. The fixing piece is rotated to push the extrusion block to be tightly attached to the piston rod, fixed installation of the piston rod and the piston plate is completed, the fixing piece is reversely rotated to move the fixing piece to achieve fixation release of the piston rod and the piston plate, and fixed installation or disassembly of the piston rod and the piston plate can be rapidly achieved in this way. And resource waste caused by the fact that the whole piston assembly needs to be replaced due to the problem of the piston plate is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of piston components, in particular to a gas compressor cylinder piston component. Background Art

[0002] A gas compressor is a power device that converts mechanical energy into gas pressure energy. It is often used to provide gas power for pneumatic tools. It is also commonly used to pressurize oxygen, hydrogen, ammonia, natural gas, coke oven gas, inert gas and other media in the petrochemical, drilling, metallurgical and other industries.

[0003] The existing gas compressor cylinder piston assembly will generate a large amount of heat during operation, and the piston assembly will deform if it continues to work in a high temperature environment, which will lead to problems with the sealing of the piston plate. At this time, the piston plate needs to be replaced. Because the existing gas compressor cylinder piston assemblies are mostly integral, when replacing the piston plate, the piston assembly is often replaced as a whole. Because the piston rod part of the piston assembly is still in a usable state, replacing the entire piston assembly only because the sealing of the piston plate of the piston assembly cannot meet the requirements will result in a waste of resources. Utility Model Content

[0004] In order to overcome the shortcomings mentioned in the above background technology, the utility model provides a gas compressor cylinder piston assembly.

[0005] The technical solution is as follows: A gas compressor cylinder piston assembly, comprising a piston rod, a piston plate being provided on the lower side of the piston rod, a fixing part being installed on the piston plate by a threaded connection, the middle part of the fixing part being hollow, and the inner side surface being an inclined surface, extrusion blocks being circumferentially equidistantly slidably connected to the piston plate, the extrusion blocks being circumferentially equidistantly distributed are located on the inner side of the fixing part, and a heat dissipation component for dissipating heat is provided between the piston rod and the piston plate.

[0006] Preferably, the heat dissipation component includes a feed channel and a discharge channel opened on the piston rod, the feed channel and the discharge channel are symmetrically distributed, and both the feed channel and the discharge channel are provided with a one-way valve for preventing backflow, a groove is opened in the middle of the piston plate, and the lower end of the piston rod is located in the groove, a cavity is opened on the piston plate, a feed port and a discharge port are opened on the piston plate, the feed port is connected with the cavity and the feed channel, and the discharge port is connected with the cavity and the discharge channel, and the groove is provided with symmetrically distributed positioning holes, and the two symmetrically distributed positioning holes are cross-shaped with the feed port and the discharge port, and a positioning component for easy installation is provided on the lower side of the piston rod, and the positioning component is used in conjunction with the positioning holes.

[0007] Preferably, the feed channel, feed port, cavity, discharge port and discharge channel cooperate with each other to form a flow cavity for medium flow and heat dissipation.

[0008] Preferably, the positioning assembly includes a slide groove opened on the lower side of the piston rod, both ends of the slide groove are slidably connected with positioning blocks, a spring located inside the slide groove is fixedly connected between the two positioning blocks, and the positioning block cooperates with the positioning hole for positioning.

[0009] Preferably, the outer wall of the piston plate is provided with symmetrically distributed annular grooves, and a sealing ring for increasing the sealing performance is sleeved in the annular groove of the piston plate.

[0010] Beneficial effects of the utility model:

[0011] The utility model completes the fixed installation of the piston rod and the piston plate by rotating the fixing part to push the extrusion block to be close to the piston rod, and the fixing part is rotated in the opposite direction to move it to realize the release of the fixing of the piston rod and the piston plate. In this way, the fixed installation or disassembly of the piston rod and the piston plate can be quickly realized, and the need to replace the entire piston assembly due to problems with the piston plate, which causes a waste of resources, is avoided. An external air pump or hydraulic pump is used to pump gas or liquid medium into the feed channel through a hose, so that the medium flows in the flow cavity, thereby taking away the heat on the piston plate, realizing the cooling of the piston plate, and avoiding the deformation of the piston plate during operation that affects the use. By arranging a sealing ring on the piston plate, the sealing between the piston plate and the cylinder body can be further increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0013] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the heat dissipation component of the utility model.

[0014] Figure 3 It is a three-dimensional structural schematic diagram of the positioning component of the utility model.

[0015] Figure 4 It is a three-dimensional structural schematic diagram of the fixing member of the utility model.

[0016] Figure numbers: 1_piston rod, 2_piston plate, 3_fixing part, 4_extrusion block, 5_groove, 6_feed channel, 7_discharge channel, 8_check valve, 9_cavity, 10_feed port, 11_discharge port, 12_positioning hole, 13_slide groove, 14_positioning block, 15_spring, 16_sealing ring. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] A gas compressor cylinder piston assembly, such as Figure 1-Figure 4 As shown, it includes a piston rod 1, a piston plate 2 is provided on the lower side of the piston rod 1, a fixing part 3 is installed on the upper side of the piston plate 2 by means of threaded connection, the middle part of the fixing part 3 is hollow, and its inner side surface is an inclined surface, four extrusion blocks 4 are circumferentially equidistantly slidably connected on the piston plate 2, and the four extrusion blocks 4 distributed circumferentially equidistantly are located on the inner side of the fixing part 3, a feed channel 6 and a discharge channel 7 are provided on the piston rod 1, the feed channel 6 and the discharge channel 7 are symmetrically distributed, and a one-way valve 8 for preventing backflow is provided in the feed channel 6 and the discharge channel 7, a groove 5 is provided in the middle part of the piston plate 2, and the lower end of the piston rod 1 is located in the groove 5, a cavity 9 is provided on the piston plate 2, a feed port 10 and a discharge port 11 are provided on the piston plate 2, and the feed port 10 and the cavity 9 are connected. It is connected to the feed channel 6, and the discharge port 11 is connected to the cavity 9 and the discharge channel 7. The feed channel 6, the feed port 10, the cavity 9, the discharge port 11 and the discharge channel 7 cooperate with each other to form a flow cavity for medium flow and heat dissipation. Two symmetrically distributed positioning holes 12 are provided in the groove 5, and the two symmetrically distributed positioning holes 12 are cross-shaped with the feed port 10 and the discharge port 11. A slide groove 13 is provided on the lower side of the piston rod 1, and positioning blocks 14 are slidably connected at both ends of the slide groove 13. A spring 15 located on the inner side of the slide groove 13 is fixedly connected between the two positioning blocks 14, and the positioning block 14 cooperates with the positioning hole 12 for positioning. The outer wall of the piston plate 2 is provided with symmetrically distributed annular grooves, and a sealing ring 16 for increasing the sealing performance is sleeved in the fantasy groove of the piston plate 2.

[0019] Working principle: When in use, the user inserts the piston rod 1 into the groove 5 of the piston plate 2, and rotates the piston rod 1 so that the positioning block 14 on it is stuck in the positioning hole 12. Through the cooperation of the positioning block 14 and the positioning hole 12, the ports of the feed channel 6 and the discharge channel 7 on the piston rod 1 are connected with the feed port 10 and the discharge port 11 respectively. At this time, the feed channel 6, the feed port 10, the cavity 9, the discharge port 11 and the discharge channel 7 cooperate to form a flow cavity for medium flow and heat dissipation. Then the user rotates the fixing part 3 to move it downward. The downward movement of the fixing part 3 can squeeze the extrusion block 4, so that the extrusion block 4 moves in the direction of the piston rod 1. The fixing part 3 pushes the extrusion block 4 to fit tightly against the piston rod 1, thereby completing the fixed installation of the piston rod 1 and the piston plate 2. When it is necessary to remove the piston rod 1 and the piston plate 2, it is only necessary to rotate the fixing part 3 in the opposite direction to move it upward; the above method can quickly achieve the fixing or removal of the piston rod 1 and the piston plate 2, avoiding the replacement of the entire piston assembly only due to the problem of damage to the piston plate 2, which causes waste of resources; when it is necessary to cool the piston plate 2, an external air pump or hydraulic pump is used to pump gas or liquid medium into the feed channel 6 through a hose and out through the discharge pipe 7, so that the medium flows in the flow cavity, thereby taking away the heat on the piston plate 2, realizing the cooling of the piston plate 2, avoiding the deformation of the piston plate 2 during operation and affecting its use, and by arranging a sealing ring 16 on the piston plate 2, the sealing between the piston plate 2 and the cylinder body can be further increased.

[0020] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A gas compressor cylinder piston assembly, comprising a piston rod (1), wherein a piston plate (2) is provided on the lower side of the piston rod (1), characterized in that: A fixing member (3) is installed on the piston plate (2) by means of a threaded connection. The middle part of the fixing member (3) is hollow and its inner side surface is an inclined surface. Extrusion blocks (4) are circumferentially equidistantly slidably connected to the piston plate (2). The extrusion blocks (4) are circumferentially equidistantly distributed and are located on the inner side of the fixing member (3). A heat dissipation component for dissipating heat is provided between the piston rod (1) and the piston plate (2).

2. A gas compressor cylinder-piston assembly according to claim 1, characterized in that: The heat dissipation component comprises a feed channel (6) and a discharge channel (7) which are opened on the piston rod (1); the feed channel (6) and the discharge channel (7) are symmetrically distributed; each of the feed channel (6) and the discharge channel (7) is provided with a one-way valve (8) for preventing backflow; a groove (5) is opened in the middle of the piston plate (2); the lower end of the piston rod (1) is located in the groove (5); a cavity (9) is opened on the piston plate (2); a feed port (10) and an discharge port (11) are opened on the piston plate (2); The feed port (11) is connected to the cavity (9) and the feed channel (6), the discharge port (11) is connected to the cavity (9) and the discharge channel (7), the groove (5) is provided with symmetrically distributed positioning holes (12), the two symmetrically distributed positioning holes (12) are arranged in a cross shape with the feed port (10) and the discharge port (11), and a positioning component for easy installation is provided on the lower side of the piston rod (1), and the positioning component is used in conjunction with the positioning holes (12).

3. A gas compressor cylinder piston assembly according to claim 2, characterized in that: The feed channel (6), the feed port (10), the cavity (9), the discharge port (11) and the discharge channel (7) cooperate with each other to form a flow cavity for medium flow and heat dissipation.

4. A gas compressor cylinder piston assembly according to claim 2, characterized in that: The positioning assembly comprises a slide groove (13) provided on the lower side of the piston rod (1), both ends of the slide groove (13) are slidably connected with positioning blocks (14), a spring (15) located inside the slide groove (13) is fixedly connected between the two positioning blocks (14), and the positioning blocks (14) cooperate with the positioning holes (12) for positioning.

5. A gas compressor cylinder-piston assembly according to claim 1, characterized in that: The outer wall of the piston plate (2) is provided with symmetrically distributed annular grooves, and a sealing ring (16) for improving sealing performance is sleeved in the annular groove of the piston plate (2).

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