Anti-abrasion structure for piston ring of reciprocating gas compressor

Abstract

The invention discloses an anti-abrasion structure for a piston ring of a reciprocating gas compressor, belongs to the technical field of gas compressors, and aims to solve the technical problems that the piston ring of the existing reciprocating gas compressor is easy to abrade, uneven in lubrication, poor in air inlet filtering effect and insufficient in transmission stability. According to the technical scheme, the air compressor is characterized by comprising an air storage tank, a protective shell, a mounting sleeve, a sealing plate, a connector, a rotating circular plate, a driven shaft, a compression assembly, a driving assembly, an air inlet cylinder and a filtering assembly and further comprising an air inlet connector and a connecting pipe; an L-shaped plate and a piston plate are arranged on the side portion of the piston ring and matched with an oil groove and a permeation hole to achieve precise lubrication, the filtering assembly adopts a conical filtering net and a circular filtering cylinder to conduct double filtering and is convenient to disassemble, assemble and clean, the driving assembly is matched with a synchronizing wheel through a servo motor for transmission to guarantee stable operation, and compressed gas is fed into a gas storage tank through a gas inlet connector after being gathered through a connecting pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressors, in particular to a piston ring anti-wear structure of a reciprocating gas compressor. BACKGROUND

[0002] In the whole chain of natural gas exploration, gathering and terminal distribution, reciprocating air compressors are key supporting equipment, widely used in natural gas pipeline purging, pressure boosting auxiliary system pneumatic control, transportation equipment brake air source supply and other scenes, providing protection for the safe and stable operation of natural gas transportation links. Its core working principle is to complete air compression through the reciprocating movement of the piston in the cylinder body. The compressed high-pressure air can meet the needs of natural gas pipeline cleaning, valve driving, emergency braking and other working conditions. The piston ring, as a key component to ensure the sealing performance between the piston and the cylinder body, directly determines the air tightness, compression efficiency and continuous operation life of the equipment during the air compression process.

[0003] The special working conditions of natural gas transportation scenes make the piston ring of the supporting air compressor face more prominent wear problems, and the consequences of wear will indirectly affect the safety and economy of natural gas transportation: natural gas transportation sites are mostly in the wild or industrial parks, and the environment is easy to diffuse stratum sand, rust debris, dust and oil and gas mist and other impurities. These impurities will enter the compressor cylinder with air and adhere to the friction surface between the piston ring and the inner wall of the cylinder, causing serious abrasive wear and accelerating the sealing performance decay and failure of the piston ring. At the same time, the natural gas transportation supporting compression equipment often needs to be operated continuously for a long time, and needs to adapt to the pressure regulation requirements under different altitudes and temperature differences. The sliding friction strength between the piston ring and the inner wall of the cylinder is continuously at a high level, and the high-pressure variable-temperature working condition further aggravates the degree of wear.

[0004] In addition, the air intake environment under the natural gas transportation scene is more complex, and the filtering effect of the air intake system is directly related to the operation stability of the compressor: the existing air intake filter structure is mostly single filter level, and the filtering precision is insufficient, which makes it difficult to effectively intercept impurities of different particle sizes in the environment, and the filter components are inconvenient to disassemble and assemble. After long-term use, impurities accumulation can cause air intake blockage, leading to a decrease in compressor air intake efficiency and exhaust volume fluctuations, which in turn affects the pipeline purging pressure stability, pneumatic element driving force and other core indicators. At the same time, the blocked filter components will increase the air intake resistance and aggravate energy waste, which is contrary to the energy-saving and efficient demand of the natural gas transportation industry. SUMMARY

[0005] The application aims at solving the problems of the prior art, such as the piston lubrication of the natural gas compressor adopting the traditional centralized oil supply mode, the uneven distribution of the lubricating oil, the single filtering level of the intake filter structure, the insufficient filtering precision, the difficulty in effectively intercepting the impurities with different particle sizes in the natural gas, and the inconvenience in disassembling the filtering components, and provides a piston ring anti-wear structure of a reciprocating gas compressor.

[0006] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme: A piston ring anti-wear structure of a reciprocating gas compressor, comprising a gas storage tank; A protective shell is fixedly installed on the top of the gas storage tank; Two mounting sleeves are fixedly connected to the top of the protective shell on both sides and are in communication with the protective shell; A sealing plate is fixedly connected to one end of the mounting sleeve; A connecting head is fixedly connected to one end of the sealing plate and is in communication with the sealing plate, an air inlet hole is formed in one end of the connecting head, an air outlet hole is formed in the other end, a partition is fixedly installed inside, and the air inlet hole and the air outlet hole are located on both sides of the partition, respectively; A rotating disc is rotatably installed on one side of the protective shell; A driven shaft is fixedly installed on one side of the rotating disc; A compression assembly is arranged on one side of the rotating disc and is used for compressing air; A driving assembly is arranged on one side of the top of the gas storage tank and is used for driving the driven shaft to rotate; An air inlet cylinder is fixedly connected to one side of the connecting head, and a circular hole in communication with the air inlet hole is formed in one side of the air inlet cylinder; A filtering assembly is arranged on one side of the air inlet cylinder and is used for filtering air; The driving assembly drives the driven shaft to drive the rotating disc to rotate, the rotating disc drives the compression assembly to act to realize air compression, external air is filtered by the filtering assembly, enters the connecting head through the circular hole and the air inlet hole, then enters the compression assembly to be compressed, and the compressed gas is discharged through the air outlet hole.

[0007] In a possible design, the compression assembly comprises an eccentric shaft, two connecting rotating plates, a rotating seat and a piston ring, the eccentric shaft is fixedly installed on one side of the rotating disc, the two connecting rotating plates are arranged in a staggered rotating mode on the outer wall of the eccentric shaft, the rotating seat is rotatably connected to one end of the connecting rotating plate, and the piston ring is fixedly connected to one side of the rotating seat and is slidably connected to the inside of the mounting sleeve; two one-way valves are fixedly embedded in the inside of the sealing plate, the two one-way valves are located on both sides of the partition and are oppositely arranged, the eccentric shaft drives the two connecting rotating plates to alternately push the piston ring to slide in the mounting sleeve when the rotating disc rotates, and the piston ring realizes the one-way suction and discharge of the gas through the two one-way valves with opposite directions when sliding.

[0008] In a possible design, the device further comprises two symmetrically arranged L-shaped plates and two symmetrically arranged oil grooves, the L-shaped plates are fixedly connected to one side of the piston ring, one end of the L-shaped plate is fixedly provided with a piston plate, the oil groove is arranged on one side of the mounting sleeve, and one end of the piston plate is arranged in an inclined manner and is slidably inserted into the oil groove; a plurality of penetration holes in communication with the oil groove are arranged on the inner wall of the mounting sleeve, an oil filling hole is arranged on the outer wall of the mounting sleeve, and a plug is threadedly connected to the oil filling hole, the oil filling hole is in communication with the oil groove and is used for oil filling, and the piston ring slides to drive the L-shaped plate and the piston plate to slide in the oil groove, the inclined end of the piston plate pushes the lubricating oil to penetrate into the friction surface between the mounting sleeve inner wall and the piston ring through the penetration hole, and lubrication is realized to reduce wear.

[0009] In a possible design, the driving assembly comprises a servo motor, a dust cover, two synchronous wheels and a synchronous belt, the servo motor is fixedly installed on the top of the gas storage tank, the dust cover is fixedly installed on one side of the top of the gas storage tank, one end of the driven shaft and the output shaft of the servo motor are rotatably extended into the dust cover, the two synchronous wheels are fixedly sleeved on the outer walls of the driven shaft and the output shaft of the servo motor, and the synchronous belt is drivingly sleeved on the outer walls of the two synchronous wheels; the dust cover is fixedly embedded with a dust screen, and the dust screen can prevent dust from entering the dust cover after the servo motor is started and the driven shaft is driven to rotate through the transmission cooperation of the synchronous wheels and the synchronous belt, so that the dust is prevented from affecting the transmission effect.

[0010] In a possible design, the filtering assembly comprises a cylindrical sleeve, a threaded ring, a conical filter screen, a connecting circular plate and a circular filter cartridge, the cylindrical sleeve is threadedly installed on one side of the air inlet cylinder, an installation hole is arranged on one side of the cylindrical sleeve, the threaded ring is threadedly installed in the installation hole, the conical filter screen is fixedly installed in the threaded ring, the connecting circular plate is fixedly installed in the conical filter screen, the circular filter cartridge is fixedly installed on one side of the connecting circular plate, and one end of the circular filter cartridge abuts against the inner wall on one side of the air inlet cylinder and is in communication with the circular hole; the connecting circular plate is fixedly provided with an operation knob on one side; a plurality of installation grooves are arranged on one side of the cylindrical sleeve, and fixing screws for fixedly connecting the air inlet cylinder and the cylindrical sleeve are threadedly arranged in the installation grooves, and external air is first filtered by the conical filter screen, then filtered again by the circular filter cartridge, and then enters the circular hole, the conical filter screen is arranged in an inclined manner, so that impurities can automatically fall off without suction, and the threaded ring, the conical filter screen and the circular filter cartridge can be integrally taken out and cleaned by rotating the operation knob.

[0011] In a possible design, the device further comprises an air inlet joint and a connecting pipe, the air inlet joint is arranged on one side of the top of the gas storage tank, one end of the connecting pipe is fixedly connected to and in communication with the air inlet joint, and the side of the connecting pipe is in communication with the two air outlet holes, and the compressed gas discharged from the two air outlet holes is collected through the connecting pipe and then delivered to the gas storage tank through the air inlet joint for storage.

[0012] In one possible design, the piston ring is made of ductile iron, which has good wear resistance and toughness, and can further reduce wear between the piston ring and the inner wall of the mounting sleeve.

[0013] In one possible design, the protective shell and the gas tank are fastened together by bolts, the mounting sleeve and the protective shell are integrally formed, the sealing plate, the mounting sleeve and the connector are all fixed by welding, and the air inlet cylinder and the connector are fixed by bolts. The integral forming and welding and bolt fastening connection methods can ensure the sealing and structural strength of the connection of each component and avoid gas and lubricating oil leakage.

[0014] In this application, when in use, the servo motor is started, and the output shaft of the servo motor drives the driven shaft to rotate through the synchronous belt and synchronous pulley. The driven shaft drives the rotating disc to rotate, the rotating disc drives the eccentric shaft to rotate, and the eccentric shaft drives the two connecting discs to rotate. The two connecting discs push the piston ring to move laterally in sequence. The piston ring moves inside the mounting sleeve, thereby compressing the internal gas and sending it into the air inlet connector through the connecting pipe. Furthermore, when the piston ring slides, the piston ring drives the L-shaped plate to move, and the L-shaped plate drives the piston plate to move. The piston plate slides inside the oil groove. When the piston plate is pulled out, the lubricating oil at the top of the oil groove permeates into the interior through the permeation holes in the inner wall of the mounting sleeve, which can help lubricate the piston ring and reduce friction. The outer wall of the mounting sleeve is provided with an oil filling port and a plug for easy and quick addition of lubricating oil. The gas enters the mounting hole through the initial filtration of the conical filter screen, then enters the round hole through the second filtration of the circular filter cylinder, and enters the connector through the air inlet. It is blocked by the baffle plate and then drawn into the mounting sleeve through one of the one-way valves. After compression, it is discharged through the other one-way valve and then sent into the connecting pipe through the air outlet. Impurities on the surface of the conical filter screen are difficult to retain due to its inclined design and will automatically fall off when there is no suction. When cleaning the conical filter screen and the circular filter cylinder is required, the operating knob can be turned. The operating knob drives the connecting plate to rotate, which in turn drives the circular filter cylinder and the conical filter screen to rotate. The conical filter screen drives the threaded ring to rotate and move outward. At this time, the conical filter screen and the circular filter cylinder can be removed as a whole for easy cleaning.

[0015] Beneficial effects: By incorporating an L-shaped plate and piston plate on one side of the piston ring, along with the oil groove, permeation hole, and lubrication port on the mounting sleeve, precise lubrication of the piston's sliding parts is achieved. As the piston ring slides, it drives the L-shaped plate and piston plate to move synchronously. The piston plate's sliding within the oil groove pushes lubricating oil through the permeation hole to evenly penetrate the friction surface between the inner wall of the mounting sleeve and the piston ring, ensuring sufficient and uniform lubrication. This effectively reduces the coefficient of friction between the piston ring and the inner wall of the mounting sleeve, reducing wear and extending the service life of both the piston ring and the mounting sleeve. Furthermore, the lubrication port facilitates quick and easy replenishment of lubricating oil without requiring the disassembly of numerous components, reducing maintenance difficulty and costs.

[0016] The filter assembly on one side of the intake manifold employs a dual filtration structure of a conical filter and a circular filter cartridge. This allows for staged filtration of the intake air. Larger particles are first intercepted by the conical filter, followed by fine dust particles filtered by the circular filter cartridge, significantly improving filtration efficiency and preventing impurities from entering the mounting sleeve and causing abrasive wear, thus further protecting the piston rings and mounting sleeve. Simultaneously, the conical filter is angled, allowing impurities to fall automatically under gravity when there is no suction, reducing impurity accumulation and extending the filter assembly's lifespan. Furthermore, the filter assembly is connected to the cylindrical sleeve via a threaded ring, and the operation knob allows for quick assembly and disassembly of the conical filter and circular filter cartridge, facilitating cleaning or replacement and ensuring stable intake efficiency. The compression assembly uses an eccentric shaft with two staggered connecting plates. The rotation of one rotating plate drives two piston rings to reciprocate alternately, achieving continuous gas intake and compression, thus improving gas compression efficiency. Meanwhile, the connector has an internal baffle that separates the air inlet and outlet. Combined with two one-way valves in opposite directions, this effectively prevents the intake gas from mixing with the compressed gas, ensuring the continuity and stability of gas compression and improving the compressor's performance.

[0017] The drive assembly employs a servo motor paired with a synchronous pulley and belt, achieving stable rotation of the driven shaft. This results in high transmission efficiency, low vibration and noise, and ensures the stability of the rotating disc driving the compression assembly. This makes the reciprocating motion of the piston rings smoother, preventing uneven wear between the piston rings and the inner wall of the mounting sleeve caused by unstable piston movement, thus improving the compressor's operational stability and reliability. Simultaneously, the dust cover and dust filter effectively prevent external dust from entering the transmission components, avoiding dust affecting transmission performance and extending the service life of the drive assembly.

[0018] In the overall structure, the protective outer shell effectively protects the internal compression and transmission components, preventing external impacts or impurities from affecting their operation. The sealed connection between the connector and the air inlet cylinder and mounting sleeve, along with the sealing plate, improves the overall sealing performance, reduces gas leakage, ensures compression efficiency, and avoids waste and environmental pollution caused by lubricating oil leakage. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a reciprocating gas compressor piston ring anti-wear structure proposed in this invention; Figure 2 An exploded view of a dust cover and gas storage tank for a reciprocating gas compressor piston ring anti-wear structure proposed in this invention; Figure 3 This is a three-dimensional view of the protective shell and mounting sleeve in the anti-wear structure of the piston ring of a reciprocating gas compressor proposed in this invention; Figure 4 This is an exploded view of the connector and connecting plate in a reciprocating gas compressor piston ring anti-wear structure proposed in this invention; Figure 5 This is an exploded view of the connector and mounting sleeve in a reciprocating gas compressor piston ring anti-wear structure proposed in this invention; Figure 6 This is an exploded view of the intake cylinder and cylindrical sleeve in a reciprocating gas compressor piston ring anti-wear structure proposed in this invention; Figure 7 This is an exploded view of the intake cylinder and conical filter screen in the piston ring anti-wear structure of a reciprocating gas compressor proposed in this invention.

[0020] In the diagram: 1. Gas tank; 2. Protective outer shell; 3. Air inlet cylinder; 4. Dust cover; 5. Connecting pipe; 6. Servo motor; 7. Connector; 8. Air inlet connector; 9. Driven shaft; 10. Dust screen; 11. Air inlet; 12. Connecting rotating plate; 13. Eccentric shaft; 14. Rotating circular plate; 15. Mounting sleeve; 16. Rotating seat; 17. L-shaped plate; 18. Piston plate; 19. Piston ring; 20. Oil groove; 21. Air outlet; 22. Partition plate; 23. One-way valve; 24. Sealing plate; 25. Connecting circular plate; 26. Operating knob; 27. Threaded ring; 28. Conical filter screen; 29. ​​Circular filter cartridge; 30. Circular hole; 31. Mounting hole; 32. Cylindrical sleeve; 33. Mounting groove. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] In one embodiment: Refer to Figures 1-7 This embodiment discloses an anti-wear structure, the specific implementation of which is as follows: A protective shell 2 is fixedly installed on the top of the gas storage tank 1. Specifically, the protective shell 2 is fixed to the top surface of the gas storage tank 1 by bolts to ensure a stable connection and facilitate subsequent disassembly and maintenance. An air inlet connector 8 is provided on one side of the top of the gas storage tank 1. One end of the air inlet connector 8 is fixedly connected to a connecting pipe 5. The side of the connecting pipe 5 is connected to two air outlets 21. Specifically, the connecting pipe 5 is fixed to the air inlet connector 8 by welding. The side of the connecting pipe 5 is connected to the two air outlets 21 one by one through branch pipes. The branch pipes are fixed to the connecting pipe 5 and the air outlets 21 by welding. Based on this, the compressed gas discharged from the two air outlets 21 can be collected and transported to the inside of the gas storage tank 1 through the air inlet connector 8. Both sides of the top of the protective shell 2 are fixedly connected to the connecting mounting sleeves 15. Specifically, the mounting sleeves 15 and the protective shell 2 are integrally formed to ensure the sealing and structural strength of the connection between the two. One end of the mounting sleeve 15 is fixedly connected to the sealing plate 24, which is fixed to the end of the mounting sleeve 15 by welding. In order to achieve the sealing protection inside the mounting sleeve 15, one end of the sealing plate 24 is fixedly connected to the connecting head 7, which is also fixed to the sealing plate 24 by welding. One end of the connecting head 7 is provided with an air inlet 11, and the other end is provided with an air outlet 21. A partition 22 is fixedly installed inside the connecting head 7 and is welded to the inner wall of the connecting head 7. The air inlet 11 and the air outlet 21 are located on both sides of the partition 22, respectively, which can achieve the separation of air inlet and outlet and avoid gas mixing. A rotating circular plate 14 is rotatably mounted on one side of the protective housing 2. Specifically, the rotating circular plate 14 is rotatably connected to the side wall of the protective housing 2 via a bearing to ensure smooth rotation of the rotating circular plate 14. A driven shaft 9 is fixedly mounted on one side of the rotating circular plate 14, and the driven shaft 9 is fixedly connected to the rotating circular plate 14 via a flat key. A compression assembly for compressing air is provided on one side of the rotating circular plate 14. Further, a drive assembly for driving the driven shaft 9 to rotate is provided on one side of the top of the air tank 1. An air inlet cylinder 3 is fixedly connected to one side of the connector 7, and the air inlet cylinder 3 is fixed to the side wall of the connector 7 via bolts. A circular hole 30 communicating with the air inlet 11 is opened on one side of the air inlet cylinder 3, and a filter assembly for filtering air is provided on one side of the air inlet cylinder 3.

[0023] Specifically, the compression assembly includes an eccentric shaft 13 fixedly installed on one side of the rotating circular plate 14. The eccentric shaft 13 is fixed to the eccentric position of the rotating circular plate 14 by welding. Two connecting rotating plates 12 are rotatably sleeved on the outer wall of the eccentric shaft 13. The two connecting rotating plates 12 are staggered. One end of the connecting rotating plate 12 is rotatably connected to a rotating seat 16. Specifically, the connecting rotating plate 12 and the rotating seat 16 are rotatably connected by a pin. A piston ring 19 is fixedly connected to one side of the rotating seat 16. The rotating seat 16 and the piston ring 19 are integrally formed. The piston ring 19 is slidably connected inside the mounting sleeve 15. In order to achieve smooth sliding of the piston ring 19 in the mounting sleeve 15 and reduce wear, preferably, the piston ring 19 is made of ductile iron, which has good wear resistance and toughness. Two one-way valves 23 are fixedly embedded inside the sealing plate 24. The two one-way valves 23 are located on both sides of the partition plate 22 and are set in opposite directions. Specifically, the one-way valves 23 are embedded inside the sealing plate 24 by interference fit. Based on this, when the piston ring 19 moves closer to the sealing plate 24, the gas pressure in the mounting sleeve 15 increases, which can push one of the one-way valves 23 to open and release gas. When the piston ring 19 moves away from the sealing plate 24, a negative pressure is formed in the mounting sleeve 15, which can draw gas in through the air inlet 11 through the other one-way valve 23, realizing one-way flow of gas.

[0024] Furthermore, two symmetrically arranged L-shaped plates 17 are fixedly connected to one side of the piston ring 19. The L-shaped plates 17 are fixed to the piston ring 19 by bolts. A piston plate 18 is fixedly installed at one end of the L-shaped plate 17. The piston plate 18 is welded to the L-shaped plate 17. Two symmetrically arranged oil grooves 20 are opened on one side of the mounting sleeve 15. One end of the piston plate 18 is inclined and the piston plate 18 is slidably inserted into the inside of the oil groove 20. Multiple permeation holes are opened on the inner wall of the mounting sleeve 15. The permeation holes are connected to the oil grooves 20. An oil filling hole is opened on the outer wall of the mounting sleeve 15. A plug is threaded inside the oil filling hole. The oil filling hole is connected to the oil groove 20 and is used for oil filling. When the piston ring 19 slides within the mounting sleeve 15, it drives the L-shaped plate 17 to move synchronously, which in turn drives the piston plate 18 to slide within the oil groove 20. The inclined end of the piston plate 18 can push the lubricating oil in the oil groove 20 towards the permeation hole, so that the lubricating oil can evenly permeate through the permeation hole to the friction surface between the inner wall of the mounting sleeve 15 and the piston ring 19, achieving precise lubrication and reducing friction and wear between the two. When the lubricating oil is insufficient, the plug can be unscrewed, and lubricating oil can be added to the oil groove 20 through the oil filling hole, which is convenient to operate.

[0025] Specifically, the drive assembly includes a servo motor 6 fixedly mounted on the top of the gas tank 1. The servo motor 6 is fastened to a pre-set mounting base on the top of the gas tank 1 by bolts. A dust cover 4 is fixedly mounted on one side of the top of the gas tank 1 by bolts. One end of the driven shaft 9 and the output shaft of the servo motor 6 both extend rotatably into the interior of the dust cover 4. Synchronous pulleys are fixedly fitted on the outer walls of the driven shaft 9 and the output shaft of the servo motor 6. Specifically, the synchronous pulleys are fixed to the driven shaft 9 and the output shaft of the servo motor 6 respectively by flat keys. The same synchronous belt is driven and fitted on the outer walls of the two synchronous pulleys. Preferably, the synchronous belt is made of rubber, which has good elasticity and transmission stability. A dustproof net 10 is fixedly embedded inside the dust cover 4. The dustproof net 10 is fixed to the inner wall of the dust cover 4 by buckles, which can prevent external dust from entering the interior of the dust cover 4 and prevent dust from adhering to the synchronous pulleys and synchronous belt, thus affecting the transmission effect. After the servo motor 6 is started, the output shaft of the servo motor 6 drives the corresponding synchronous pulley to rotate, which drives the driven shaft 9 to rotate synchronously through the transmission action of the synchronous belt, thereby driving the rotating circular plate 14 to rotate, providing power for the operation of the compression assembly.

[0026] The operation process of this embodiment is as follows: The servo motor 6 is started, and the servo motor 6 drives the driven shaft 9 to rotate via the synchronous pulley and synchronous belt. The driven shaft 9 drives the rotating circular plate 14 to rotate, and the rotating circular plate 14 drives the eccentric shaft 13 to rotate. The eccentric shaft 13 drives two staggered connecting rotating plates 12 to rotate. The two connecting rotating plates 12 sequentially push the rotating seat 16 and the piston ring 19 to reciprocate within the mounting sleeve 15. When the piston ring 19 slides, it drives the L-shaped plate 17 and the piston plate 18 to move within the oil groove 20, pushing the lubricating oil through the permeation holes to penetrate the friction surface for lubrication. After being filtered twice by the conical filter screen 28 and the circular filter cartridge 29, the outside air passes through the circular hole 30 and the inlet... The gas enters the connector 7 through the vent 11, is blocked by the partition 22, and then enters the mounting sleeve 15 through one of the one-way valves 23. With the compression of the piston ring 19, the gas in the mounting sleeve 15 enters the outlet 21 side of the connector 7 through the other one-way valve 23. The compressed gas discharged from the two outlets 21 is collected in the connecting pipe 5 through the branch pipes of the connecting pipe 5, and then transported to the air inlet connector 8 through the connecting pipe 5. Finally, it enters the gas storage tank 1 for storage through the air inlet connector 8. During this process, the protective shell 2 protects the internal components, and the sealing plate 24 and the sealing structure of each connection part ensure the overall sealing performance and prevent gas and lubricating oil leakage.

[0027] This application can be used in the field of compressors, or in other fields applicable to this application.

[0028] In another embodiment: Reference Figures 1-7A reciprocating gas compressor piston ring anti-wear structure is described, which is used in the compressor field. The structure of this embodiment is basically the same as the previous embodiment, except that: further, a cylindrical sleeve 32 is threadedly installed on one side of the intake cylinder 3. Specifically, the outer wall of the intake cylinder 3 is provided with external threads, and the inner wall of the cylindrical sleeve 32 is provided with internal threads. The two are detachably connected by threaded engagement. A mounting hole 31 is opened on one side of the cylindrical sleeve 32, and a threaded ring 27 is threadedly installed inside the mounting hole 31. A conical filter screen 28 is fixedly installed inside the threaded ring 27. The conical filter screen 28 is welded and fixed to the threaded ring 27. An internal connecting circular plate 25 is fixedly installed, and the connecting circular plate 25 is welded and fixed to the conical filter screen 28. An operating knob 26 is fixedly installed on one side of the connecting circular plate 25 and is fixed to the connecting circular plate 25 by bolts. A circular filter cartridge 29 is fixedly installed on one side of the connecting circular plate 25 and is welded and fixed to the connecting circular plate 25. One end of the circular filter cartridge 29 abuts against the inner wall of one side of the air inlet cylinder 3. The circular filter cartridge 29 is connected to the circular hole 30, and a sealing ring is fitted at the contact point between the circular filter cartridge 29 and the inner wall of the air inlet cylinder 3 to achieve a sealed fit between the two and prevent unfiltered gas from entering the circular hole 30 through the gap. Preferably, the circular filter cartridge 29 is made of stainless steel, which has good corrosion resistance and filtration stability. A plurality of mounting grooves 33 are opened on one side of the cylindrical sleeve 32. The internal threads of the mounting grooves 33 are threaded through and fixed screws are used to fix the air inlet cylinder 3 and the cylindrical sleeve 32, further improving the stability of the connection between the two. Before entering the intake cylinder 3, outside air first passes through the conical filter 28 for preliminary filtration, intercepting larger particles of impurities. Then, it passes through the circular filter 29 for secondary filtration, removing fine dust. The filtered clean air enters the intake port 11 through the circular hole 30. Because the conical filter 28 is tilted, impurities will automatically fall off under the influence of gravity when there is no suction, reducing accumulation. When cleaning the filter assembly is required, first unscrew the fixing screws, rotate the cylindrical sleeve 32 to separate it from the intake cylinder 3, and then rotate the connecting circular plate 25 by operating the knob 26, which will drive the threaded ring 27 to rotate and exit from the mounting hole 31. The conical filter 28 and the circular filter 29 can then be removed as a whole for cleaning or replacement, making the operation convenient.

[0029] After long-term operation, this device requires regular maintenance, including: regularly replenishing lubricating oil through the oil filling hole of the mounting sleeve 15; regularly disassembling the filter assembly to clean impurities on the conical filter screen 28 and the circular filter cylinder 29; and regularly checking the tension of the synchronous belt and the tightness of each bolt connection to ensure the normal operation of the equipment.

[0030] It also includes a controller, which is a PLC controller. The controller is electrically connected to the servo motor 6 and is used to control the start, stop and speed adjustment of the servo motor 6 so that the servo motor 6 drives the driven shaft 9 to drive the compression component to complete the air compression action according to the preset rhythm.

[0031] However, as is well known to those skilled in the art, the working principle and wiring method of the servo motor 6 are conventional methods or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wear-resistant structure for a reciprocating gas compressor, comprising a gas storage tank (1), a protective housing (2) installed on the top of the gas storage tank (1), and a compression assembly located within the protective housing (2), characterized in that, Also includes: Mounting sleeve (15) is fixed to the protective shell (2); sealing plate (24) is fixed to one end of mounting sleeve (15), and the sealing plate (24) is provided with an air inlet channel and an air outlet channel; piston ring (19) is slidably disposed in the mounting sleeve (15), and the piston ring (19) is connected to the compression assembly to reciprocate within the mounting sleeve (15); lubrication structure includes an oil groove (20) opened on the side wall of the mounting sleeve (15) and a piston plate (18) connected to the piston ring (19), the piston plate (18) is slidably inserted into the oil groove (20), and the inner wall of the mounting sleeve (15) is provided with a permeation hole communicating with the oil groove (20).

2. The wear-resistant structure of the reciprocating gas compressor according to claim 1, characterized in that, The lubrication structure also includes an L-shaped plate (17) fixedly connected to the piston ring (19), and the piston plate (18) is fixed to the end of the L-shaped plate (17).

3. The wear-resistant structure of the reciprocating gas compressor according to claim 1, characterized in that, The outer wall of the mounting sleeve (15) is provided with an oil filling hole that communicates with the oil tank (20), and a plug is threaded into the oil filling hole.

4. The wear-resistant structure of the reciprocating gas compressor according to claim 1, characterized in that, Two one-way valves (23) are embedded on the sealing plate (24). The two one-way valves (23) correspond to the air inlet channel and the air outlet channel respectively, and the opening directions of the two one-way valves (23) are opposite.

5. The wear-resistant structure of the reciprocating gas compressor according to claim 4, characterized in that, A connector (7) is fixed on the sealing plate (24). A partition (22) is provided inside the connector (7). The partition (22) divides the inner cavity of the connector (7) into an air inlet cavity and an air outlet cavity. The air inlet channel and the air outlet channel are located in the air inlet cavity and the air outlet cavity, respectively.

6. The wear-resistant structure of the reciprocating gas compressor according to claim 1, characterized in that, It also includes a filter assembly, which includes an air intake cylinder (3) connected to the air intake channel, and the air intake end of the air intake cylinder (3) is provided with a detachable filter element.

7. The wear-resistant structure of the reciprocating gas compressor according to claim 6, characterized in that, The filter assembly includes a cylindrical sleeve (32) threaded to the end of the air inlet cylinder (3), and the cylindrical sleeve (32) is provided with a mounting hole (31). The filter element is installed in the mounting hole (31) through a threaded ring (27).

8. The wear-resistant structure of the reciprocating gas compressor according to claim 7, characterized in that, The filter element includes a conical filter screen (28) and a circular filter cylinder (29) fixed inside the conical filter screen (28), the circular filter cylinder (29) being opposite to the air inlet of the air inlet cylinder (3).

9. The wear-resistant structure of the reciprocating gas compressor according to claim 1, characterized in that, The compression assembly includes a rotating circular plate (14) rotatably disposed within the protective housing (2), an eccentric shaft (13) fixed on the rotating circular plate (14), and a connecting plate (12) whose two ends are rotatably connected to the eccentric shaft (13) and the piston ring (19) respectively.

10. The wear-resistant structure of the reciprocating gas compressor according to claim 1, characterized in that, It also includes a drive assembly for driving the compression assembly, the drive assembly including a servo motor (6) and a synchronous belt mechanism that drives the output shaft of the servo motor (6) to the compression assembly.

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