Piston assembly of gas compressor

Abstract

The utility model discloses a gas compressor piston assembly, which relates to the technical field of gas compressors and comprises a shell, a gas cavity, a transmission cavity and a driving cavity are arranged in the shell, the gas cavity, the transmission cavity and the driving cavity are sequentially arranged and communicated with one another, and a gas inlet pipe and a gas outlet pipe are fixedly mounted on the outer side of the shell. The air inlet pipe and the air outlet pipe are symmetrically arranged along the center line of the shell, air holes are formed in the air inlet pipe and the air outlet pipe and communicate with the air cavity, a main piston is slidably installed in the air cavity, a connecting rod is rotatably installed below the main piston, the bottom of the connecting rod extends to the driving cavity, and a motor is fixedly installed on the outer side of the shell. The motor is electrically connected with an external power source, the output end of the motor is fixedly provided with a rotating shaft, the top of the rotating shaft is fixedly provided with a rotating disc, and the connecting rod is movably connected with the rotating disc.

Description

Technical Field

[0001] The utility model belongs to the field of gas compressors, and particularly relates to a piston assembly of a gas compressor. Background Technique

[0002] An air compressor is a device used to compress gases. An air compressor is similar in structure to a water pump. Most air compressors are reciprocating piston type, rotary vane or rotary screw.

[0003] The existing piston assembly of an air compressor compresses gases through a double-tube compound compression method, that is, the gas is introduced into the other tube by one side piston structure, and then the gas is compressed by the piston structure in the other tube, resulting in low compression efficiency. At the same time, after the main piston moves for a long time, wear will occur, which will further affect the gas compression efficiency. However, the structure of the existing piston assembly is fixed, and it is rather troublesome to replace the piston.

[0004] Therefore, we propose a piston assembly of a gas compressor. Content of the Utility Model

[0005] The present utility model provides a piston assembly of a gas compressor to solve the technical problems raised in the above background technique.

[0006] To solve the above technical problems, a piston assembly of a gas compressor provided by the present utility model includes a housing. An air cavity, a transmission cavity and a driving cavity are arranged in the housing in sequence and are communicated with each other. An air inlet pipe and an air outlet pipe are fixedly installed on the outer side of the housing. The air inlet pipe and the air outlet pipe are symmetrically arranged along the center line of the housing. The air inlet pipe and the air outlet pipe are both provided with air holes, and the air holes are communicated with the air cavity. A main piston is slidably installed in the air cavity. A connecting rod is rotatably installed below the main piston. The bottom of the connecting rod extends to the driving cavity. A motor is fixedly installed on the outer side of the housing. The motor is electrically connected to an external power supply. A rotating shaft is fixedly installed at the output end of the motor. A turntable is fixedly installed at the top of the rotating shaft. The connecting rod is movably connected to the turntable.

[0007] Preferably, a first spring is fixedly installed on the inner wall of the air inlet pipe. The first spring is arranged above the air hole. A first air passage piston is fixedly installed at the bottom of the first spring. The outer diameter of the first air passage piston is larger than the inner diameter of the air hole. The first air passage piston is arranged on the outer side of the air inlet pipe.

[0008] Preferably, a second spring is fixedly installed on the inner wall of the air outlet pipe. The second spring is arranged above the air hole. A second air passage piston is fixedly installed at the bottom of the second spring. The outer diameter of the second air passage piston is larger than the inner diameter of the air hole. The second air passage piston is arranged on the inner side of the air outlet pipe.

[0009] Preferably, sealing grooves are formed on the outer side of the main piston. There are two sealing grooves, which are symmetrically arranged. Sealing rings are arranged in the sealing grooves, and the sealing rings are clamped in the sealing grooves.

[0010] Preferably, a first rotating seat is fixedly installed at the bottom of the piston. The top of the connecting rod is rotatably connected to the first rotating seat. An eccentric shaft is fixedly installed at an eccentric position of the turntable. The eccentric shaft penetrates through the connecting rod and is rotatably connected to the connecting rod.

[0011] Preferably, the connecting rod includes a sleeve. The bottom of the sleeve is rotatably connected to the eccentric shaft. A connecting shaft is detachably installed in the sleeve. The top of the connecting shaft is rotatably connected to the first rotating seat.

[0012] Preferably, through holes are formed on the outer side of the sleeve. Card slots are formed at positions corresponding to the through holes on the connecting shaft. Clasps are fixedly installed on the outer side of the sleeve. There are two clasps, which are symmetrically arranged.

[0013] Preferably, each clasp includes a second rotating seat. The second rotating seats are fixedly installed on the outer side of the sleeve. There are two second rotating seats symmetrically arranged. Pressing plates are rotatably installed on the outer sides of the two second rotating seats. A return spring is fixedly installed at the bottom of the pressing plate. The other end of the return spring is fixedly connected to the inner wall of the sleeve. A limiting block is fixedly installed at the top of the pressing plate. The limiting block penetrates through the through hole and is clamped with the card slot.

[0014] The utility model has the following advantages compared with the prior art:

[0015] 1. For the piston assembly of the gas compressor of the utility model, during use, start the motor circuit. The motor drives the turntable to rotate. The connecting rod is rotatably installed at an eccentric position of the turntable, so that the turntable drives the connecting rod to make a reciprocating motion, and thus the main piston makes a reciprocating motion in the air chamber. When the piston moves downward, the space in the air chamber increases and the air pressure decreases. The external air pressure makes the first airway piston move downward and stretch the first spring. At this time, the gas enters the air chamber through the air holes of the air inlet pipe. When the main piston moves upward, the space in the air chamber becomes smaller and the air pressure increases. The air pressure in the air chamber makes the first airway piston move upward under the action of the first spring and block the air holes of the air inlet pipe. At the same time, it pushes the second airway piston upward and compresses the second spring. The gas is compressed through the air holes of the air outlet pipe. The single main piston structure realizes gas compression, and the compression path is shortened, thereby improving the compression efficiency.

[0016] 2. For a piston assembly of a gas compressor of the present utility model, when the gas compression efficiency inside the main piston decreases, press one end of the two pressing plates located at the top of the return spring. The pressing plate compresses the return spring, and at the same time, the pressing plate rotates along the second rotating seat, driving the limiting block to disengage from the clamping groove. The coupling shaft can be directly pulled out, so as to replace the new main piston. Insert the coupling shaft below the new main piston into the sleeve, making the clamping groove correspond to the through hole. Release the pressing plate, and the pressing plate rotates reversely along the second rotating seat under the action of the return spring, inserting the limiting block into the clamping groove for fixation. The disassembly is simple, the replacement is convenient, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural diagram of a piston assembly of a gas compressor of the present utility model;

[0018] Figure 2 is a sectional structural diagram of a piston assembly of a gas compressor of the present utility model;

[0019] Figure 3 is an exploded structural diagram of the main piston in a piston assembly of a gas compressor of the present utility model;

[0020] Figure 4 is a structural diagram of the intake pipe in a piston assembly of a gas compressor of the present utility model;

[0021] Figure 5 is a structural diagram of the outlet pipe in a piston assembly of a gas compressor of the present utility model;

[0022] Figure 6 is a structural diagram of the buckle in a piston assembly of a gas compressor of the present utility model;

[0023] Reference numerals in the figures: 1, housing; 2, motor; 3, intake pipe; 4, outlet pipe; 5, air chamber; 6, transmission chamber; 7, drive chamber; 8, turntable; 9, eccentric shaft; 10, sleeve; 11, buckle; 12, coupling shaft; 13, sealing ring; 14, main piston; 15, first rotating seat; 16, clamping groove; 17, first spring; 18, air hole; 19, first airway piston; 20, second spring; 21, second airway piston; 22, pressing plate; 23, return spring; 24, second rotating seat; 25, limiting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Embodiment 1

[0025] Please refer to Figures 1-6, the present utility model provides a technical solution: a gas compressor piston assembly, including a housing 1, in which an air chamber 5, a transmission chamber 6 and a drive chamber 7 are provided. The air chamber 5, the transmission chamber 6 and the drive chamber 7 are arranged in sequence and communicate with each other. An intake pipe 3 and an exhaust pipe 4 are fixedly installed on the outer side of the housing 1. The intake pipe 3 and the exhaust pipe 4 are symmetrically arranged along the center line of the housing 1. The intake pipe 3 and the exhaust pipe 4 are both provided with air holes 18, and the air holes 18 communicate with the air chamber 5. A main piston 14 is slidably installed in the air chamber 5. A connecting rod is rotatably installed below the main piston 14, and the bottom of the connecting rod extends to the drive chamber 7. A motor 2 is fixedly installed on the outer side of the housing 1. The motor 2 is electrically connected to an external power supply. A rotating shaft is fixedly installed at the output end of the motor 2. A turntable 8 is fixedly installed at the top of the rotating shaft. The connecting rod is movably connected to the turntable 8. A first spring 17 is fixedly installed on the inner wall of the intake pipe 3. The first spring 17 is arranged above the air hole 18. A first airway piston 19 is fixedly installed at the bottom of the first spring 17. The outer diameter of the first airway piston 19 is larger than the inner diameter of the air hole 18. The first airway piston 19 is arranged outside the intake pipe 3. A second spring 20 is fixedly installed on the inner wall of the exhaust pipe 4. The second spring 20 is arranged above the air hole 18. A second airway piston 21 is fixedly installed at the bottom of the second spring 20. The outer diameter of the second airway piston 21 is larger than the inner diameter of the air hole 18. The second airway piston 21 is arranged inside the exhaust pipe 4.

[0026] In this embodiment, during use, start the circuit of the motor 2. The motor 2 drives the turntable 8 to rotate. The connecting rod is rotatably installed at an eccentric position of the turntable 8, so that the turntable 8 drives the connecting rod to make a reciprocating motion, thereby enabling the main piston 14 to make a reciprocating motion in the air chamber 5. When the piston moves downward, the space in the air chamber 5 increases and the air pressure decreases. The external air pressure causes the first airway piston 19 to move downward and stretch the first spring 17. At this time, the gas enters the air chamber 5 through the air hole 18 of the intake pipe 3. When the main piston 14 moves upward, the space in the air chamber 5 becomes smaller and the air pressure increases. The air pressure in the air chamber 5 causes the first airway piston 19 to move upward under the action of the first spring 17 and block the air hole 18 of the intake pipe 3. At the same time, it pushes the second airway piston 21 upward and compresses the second spring 20. The gas is compressed through the air hole 18 of the exhaust pipe 4, realizing gas compression with a single main piston 14 structure, shortening the compression path, and thus improving the compression efficiency.

[0027] Embodiment 2

[0028] Further, on the basis of Embodiment 1, the present utility model provides a solution: a sealing groove is provided on the outer side of the main piston 14. There are two sealing grooves, and the two sealing grooves are symmetrically arranged. A sealing ring 13 is provided in the sealing groove, and the sealing ring 13 is clamped in the sealing groove. A rotating seat one 15 is fixedly installed at the bottom of the piston. The top of the connecting rod is rotatably connected to the rotating seat one 15. An eccentric shaft 9 is fixedly installed at an eccentric position of the turntable 8. The eccentric shaft 9 penetrates through the connecting rod, and the eccentric shaft 9 is rotatably connected to the connecting rod. The connecting rod includes a sleeve 10. The bottom of the sleeve 10 is rotatably connected to the eccentric shaft 9. A connecting shaft 12 is detachably installed in the sleeve 10. The top of the connecting shaft 12 is rotatably connected to the rotating seat one 15. Through holes are provided on the outer side of the sleeve 10. A clamping groove 16 is provided at a position corresponding to the connecting shaft 12 on the through hole. Two clamping buckles 11 are fixedly installed on the outer side of the sleeve 10. The two clamping buckles 11 are symmetrically arranged. The clamping buckle 11 includes a rotating seat two 24. The rotating seat two 24 is fixedly installed on the outer side of the sleeve 10. There are two rotating seat two 24 symmetrically arranged. A pressing plate 22 is rotatably installed on the outer side of the two rotating seat two 24. A reset spring 23 is fixedly installed at the bottom of the pressing plate 22. The other end of the reset spring 23 is fixedly connected to the inner wall of the sleeve 10. A limiting block 25 is fixedly installed at the top of the pressing plate 22. The limiting block 25 penetrates through the through hole, and the limiting block 25 is clamped with the clamping groove 16.

[0029] In this embodiment, when the gas compression efficiency in the main piston 14 decreases, press one end of the two pressing plates 22 located at the top of the reset spring 23. The pressing plate 22 compresses the reset spring 23. At the same time, the pressing plate 22 rotates along the rotating seat two 24, driving the limiting block 25 to disengage from the clamping groove 16. The connecting shaft 12 can be directly pulled out, so as to replace the new main piston 14. Insert the connecting shaft 12 below the new main piston 14 into the sleeve 10, so that the clamping groove 16 corresponds to the through hole. Release the pressing plate 22. The pressing plate 22 rotates reversely along the rotating seat two 24 under the action of the reset spring 23, and inserts the limiting block 25 into the clamping groove 16 for fixation. The disassembly is simple, the replacement is convenient, and the work efficiency is improved.

[0030] Working principle:

[0031] During use, start the circuit of the motor 2. The motor 2 drives the turntable 8 to rotate. The connecting rod is rotatably installed at an eccentric position of the turntable 8, so that the turntable 8 drives the connecting rod to make a reciprocating motion, thereby enabling the main piston 14 to reciprocate in the air chamber 5. When the piston moves downward, the space in the air chamber 5 increases, the air pressure decreases, and the external air pressure causes the airway piston 19 to move downward and stretch the first spring 17. At this time, the gas enters the air chamber 5 through the air hole 18 of the air inlet pipe 3. When the main piston 14 moves upward, the space in the air chamber 5 becomes smaller, the air pressure increases, and the air pressure in the air chamber 5 causes the airway piston 19 to move upward under the action of the first spring 17 and block the air hole 18 of the air inlet pipe 3. At the same time, it pushes the airway piston 21 upward and compresses the second spring 20. The gas is compressed through the air hole 18 of the air outlet pipe 4, realizing gas compression with a single main piston 14 structure, shortening the compression path, and thus improving the compression efficiency. When the gas compression efficiency in the main piston 14 decreases, press one end of the two pressing plates 22 located at the top of the return spring 23. The pressing plate 22 compresses the return spring 23. At the same time, the pressing plate 22 rotates along the second rotating seat 24, driving the limiting block 25 to disengage from the clamping groove 16, and the coupling shaft 12 can be directly pulled out, thereby replacing the new main piston 14. Insert the coupling shaft 12 below the new main piston 14 into the sleeve 10 so that the clamping groove 16 corresponds to the through hole. Release the pressing plate 22, and the pressing plate 22 rotates reversely along the second rotating seat 24 under the action of the return spring 23, and inserts the limiting block 25 into the clamping groove 16 for fixation. The disassembly is simple, the replacement is convenient, and the work efficiency is improved.

Claims

1. A gas compressor piston assembly, comprising a housing (1), characterized in that: An air cavity (5), a transmission cavity (6) and a driving cavity (7) are formed inside the housing (1). The air cavity (5), the transmission cavity (6) and the driving cavity (7) are arranged in sequence and communicate with each other. An air inlet pipe (3) and an air outlet pipe (4) are fixedly installed on the outside of the housing (1). The air inlet pipe (3) and the air outlet pipe (4) are symmetrically arranged along the center line of the housing (1). Air holes (18) are formed in both the air inlet pipe (3) and the air outlet pipe (4), and the air holes (18) communicate with the air cavity (5). A main piston (14) is slidably installed in the air cavity (5). A connecting rod is rotatably installed below the main piston (14), and the bottom of the connecting rod extends into the driving cavity (7). A motor (2) is fixedly installed on the outside of the housing (1). The motor (2) is electrically connected to an external power supply. A rotating shaft is fixedly installed at the output end of the motor (2). A turntable (8) is fixedly installed at the top of the rotating shaft. The connecting rod is movably connected to the turntable (8).

2. The gas compressor piston assembly according to claim 1, characterized in that, A first spring (17) is fixedly installed on the inner wall of the air inlet pipe (3). The first spring (17) is arranged above the air hole (18). A first air passage piston (19) is fixedly installed at the bottom of the first spring (17). The outer diameter of the first air passage piston (19) is larger than the inner diameter of the air hole (18). The first air passage piston (19) is arranged on the outside of the air inlet pipe (3).

3. The gas compressor piston assembly according to claim 1, characterized in that, A second spring (20) is fixedly installed on the inner wall of the air outlet pipe (4). The second spring (20) is arranged above the air hole (18). A second air passage piston (21) is fixedly installed at the bottom of the second spring (20). The outer diameter of the second air passage piston (21) is larger than the inner diameter of the air hole (18). The second air passage piston (21) is arranged on the inside of the air outlet pipe (4).

4. A gas compressor piston assembly according to claim 1, characterized in that, Sealing grooves are formed on the outside of the piston. There are two sealing grooves, and the two sealing grooves are symmetrically arranged. Sealing rings (13) are arranged in the sealing grooves, and the sealing rings (13) are clamped in the sealing grooves.

5. A gas compressor piston assembly according to claim 1, characterized in that, A first rotating seat (15) is fixedly installed at the bottom of the main piston (14). The top of the connecting rod is rotatably connected to the first rotating seat (15). An eccentric shaft (9) is fixedly installed at an eccentric position of the turntable (8). The eccentric shaft (9) penetrates through the connecting rod, and the eccentric shaft (9) is rotatably connected to the connecting rod.

6. The gas compressor piston assembly according to claim 5, characterized in that The connecting rod includes a sleeve (10). The bottom of the sleeve (10) is rotatably connected to the eccentric shaft (9). A connecting shaft (12) is detachably installed in the sleeve (10). The top of the connecting shaft (12) is rotatably connected to the first rotating seat (15).

7. A gas compressor piston assembly according to claim 6, characterized in that, Through holes are formed on the outside of the sleeve (10). Card slots (16) are formed at positions corresponding to the connecting shaft (12) on the through holes. Two clamping buckles (11) are fixedly installed on the outside of the sleeve (10), and the two clamping buckles (11) are symmetrically arranged.

8. A gas compressor piston assembly according to claim 7, characterized in that, The buckle (11) includes a second rotating seat (24). The second rotating seat (24) is fixedly installed on the outer side of the sleeve (10). There are two symmetrically arranged second rotating seats (24). A pressing plate (22) is rotatably installed on the outer sides of the two second rotating seats (24). A return spring (23) is fixedly installed at the bottom of the pressing plate (22). The other end of the return spring (23) is fixedly connected to the inner wall of the sleeve (10). A limiting block (25) is fixedly installed at the top of the pressing plate (22). The limiting block (25) penetrates through the through hole, and the limiting block (25) is clamped with the clamping groove (16).

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