Piston type air compressor

Abstract

The invention discloses a piston type air compressor, and relates to the technical field of air compressors, the piston type air compressor comprises an air compressor main body, a distance compensation buffer piece is arranged at the bottom of a piston, the piston is connected with a crank rocker mechanism on a driving piece through the distance compensation buffer piece, and a one-way counting piece is arranged on the inner side of a transition cavity. By arranging a distance compensation buffer part, when a driving part operates, an annular electromagnet is powered on, a piston compresses and exhausts air, when the driving part stops operating, the annular electromagnet is powered off, at the moment, a first connecting ring is separated from the annular electromagnet under the action of elastic restoring force of a second telescopic spring, and a locking pin is separated from a locking hole; at the moment, the piston loses supporting force, so that residual compressed air in the compression cavity exerts acting force on the piston, the piston can be restored, the situation that air which is not completely compressed in the compression cavity generates continuous pressure on the piston when the piston stops in the middle of the compression cavity is prevented, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of air compressors, in particular to a piston air compressor. Background Art

[0002] A piston air compressor is a reciprocating compressor in which a crank-rocker mechanism connected to a motor drives the piston to move up and down to compress the air. It is widely used in situations where medium pressure and flow requirements are required, such as factories and construction sites.

[0003] When the air compressor motor stops, if the piston is in the middle position of the compression chamber (at this time, some compressed air that has not been completely discharged may remain in the compression chamber), the residual air may be in a medium-high pressure state, and the piston will be subjected to continuous "back thrust", causing the connecting rod, crank and other transmission parts to bear static tension or pressure. At the same time, the piston ring will be continuously pressed against the chamber wall (the pressure comes from the air in the chamber). Long-term (such as shutdown for several days) may cause elastic fatigue of the piston ring and "permanent deformation", which will affect the service life of the air compressor. Summary of the Invention

[0004] The purpose of the present invention is to provide a piston air compressor in order to solve the problem that some compressed air that is not completely discharged easily remains in the compression chamber when the air compressor stops operating.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a piston air compressor comprising an air compressor body, a driving member installed on the top of the air compressor body, a piston cylinder connected to the top of the driving member, an air intake pipe installed on one side of the top of the piston cylinder, a compressed air exhaust pipe connected to the top of the piston cylinder provided on the top of the air compressor body, the piston cylinder consisting of a compression chamber, a transition chamber, an annular partition, and an annular oil drain groove, the annular partition is installed on the inner wall of the piston cylinder, the compression chamber and the transition chamber are respectively located above and below the annular partition, the annular oil drain groove is opened on the inner side of the compression chamber, the interior of the compression chamber is slidably connected with a piston, a compensation buffer is provided on the bottom of the piston, the piston is connected to the crank rocker mechanism on the driving member through the compensation buffer, a one-way counting member is provided on the inner side of the transition chamber, and an intermittent oil spraying member is installed on the outer side of the piston cylinder.

[0006] As a further solution of the present invention: the compensation buffer includes an extension rod installed on the bottom of the piston and extending to the inner side of the transition cavity, locking holes are provided on both sides of the bottom of the extension rod, and a locking pin is inserted into the inside of the locking hole, and a compensation pin extending to the inside of the locking pin is inserted on the side of the locking pin away from the locking hole, and one end of the compensation pin is provided with a third telescopic spring connected to the inner wall of the locking pin, and a limiting guide plate is provided on the outside of the compensation pin, and a second link is installed at the bottom of the limiting guide plate, and a mounting frame connected to the crank rocker mechanism on the driving member is provided at the bottom of the second link, and an annular electromagnet is installed on the top of the second link.

[0007] As a further solution of the present invention: the compensation buffer also includes a slider movably connected to the limiting guide plate, one end of the slider is provided with a first link located above the annular electromagnet, and the top of the first link is installed with a second telescopic spring connected to one side of the limiting guide plate, and the two sides of the slider are rotatably connected to the oblique connecting rod connected to the end of the compensation pin away from the locking pin through a rotating shaft.

[0008] As a further solution of the present invention: the end of the locking pin away from the supplementary pin is rotatably connected to a ball via a rotating shaft, and the length of the extension rod is greater than the maximum distance of vertical movement of the locking pin.

[0009] As a further solution of the present invention: the one-way counting member includes a straight rack installed at the bottom of the piston, the outer wall of the piston cylinder is provided with a first transmission shaft extending to the inner side of the transition chamber, one end of the first transmission shaft is provided with a transmission bevel gear located on the outside of the piston cylinder, the other end of the first transmission shaft is rotatably connected to the spur gear through a bearing, the spur gear is meshed with the spur rack, the end of the spur gear close to the first transmission shaft is rotatably connected to a pawl through a rotating shaft, the connection between the pawl and the spur gear is clamped with a torsion spring through a slot, one end of the first transmission shaft is provided with a ratchet meshed with the pawl, the outer wall of the piston cylinder is rotatably connected to a worm, the bottom of the worm is also provided with a transmission bevel gear, the first transmission shaft and the worm are connected through the transmission bevel gear, the outer wall of the piston cylinder is rotatably connected to the second transmission shaft, and the second transmission shaft is provided with a worm wheel meshing with the worm.

[0010] As a further solution of the present invention: a rectangular hole with a length and width greater than the length and width of the cross section of the straight rack is opened on the annular partition.

[0011] As a further solution of the present invention: a damping pad is provided at the connection between the first transmission shaft and the piston cylinder, which increases the friction between the first transmission shaft and the piston cylinder to prevent the first transmission shaft from rotating synchronously with the spur gear when the spur gear rotates relative to the first transmission shaft.

[0012] and a tube connecting the dischar e side of the pump with a plug in the forward end of the crank case, said tube having a check valve in it at the pump end, and said former tube which connects the pump to the oil drain plug, which has a check valve in it at the pump end. The said tube which connects the pump to the oil drain plug, and the said pipe is connected to the oil drain pluged into the oil drain plug.

[0013] As a further solution of the present invention: a plurality of second one-way valves are provided, and the plurality of second one-way valves are distributed at equal distances along the center of the oil pumping tank.

[0014] As a further solution of the present invention: the liquid inlet end of the second one-way valve is connected to the top of the oil pumping tank, and the liquid inlet end of the first one-way valve faces the external lubricating oil storage tank.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a compensation buffer, when the driving part is operating, the annular electromagnet is energized, and the piston compresses and exhausts the air. When the driving part stops operating, the annular electromagnet is de-energized. At this time, the first link will be separated from the annular electromagnet under the action of the elastic restoring force of the second telescopic spring, and the locking pin will be separated from the locking hole. At this time, the piston will lose its supporting force, so that the compressed air remaining in the compression chamber will exert force on the piston, so that the piston can move relative to the compression chamber, thereby pushing the piston to a position in contact with the annular partition, so that the piston can be restored. In this way, the uncompressed air in the compression chamber is prevented from exerting continuous pressure on the piston when the piston stops in the middle position of the compression chamber. At the same time, the piston is prevented from being subjected to continuous "back thrust", which causes the transmission parts such as the connecting rod and crank and the sealing ring on the piston to be subjected to static tension or pressure, thereby improving the service life of the equipment. When the worm gear is in the gear, the first gear is rotated by the second gear, and the second gear is rotated by the worm gear. When the worm gear drives the second transmission shaft to rotate clockwise, the swing arm will toggle and squeeze the U-shaped connecting frame, thereby causing the U-shaped connecting frame to drive the annular connecting plate to move downward. At this time, the annular connecting plate drives the annular plug plate to move downward through the pushing rod, thereby making the space above the annular plug plate in a negative pressure state, so that the lubricating oil can enter the oil pumping tank through the oil inlet pipe. As the swing arm intermittently swings clockwise, the U-shaped connecting frame drives the annular connecting plate to move downward intermittently. When the swing arm rotates to a vertical state, the end of the swing arm away from the second transmission shaft will separate from the U-shaped connecting frame. At this time, the U-shaped connecting frame will recover under the action of the elastic restoring force of the first telescopic spring, thereby causing the annular connecting plate to drive the annular plug plate to squeeze the lubricating oil inside the oil pumping tank, thereby making the lubricating oil inside the oil pumping tank evenly injected into the annular oil drain groove, and at this time, the sealing ring plate will drive the lubricating oil to be laid as the piston moves, so that the lubricating oil is fully in contact with the outer wall of the piston, thereby improving the lubrication effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 Schematic diagram of the internal structure of the piston cylinder of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the connection between the oil pumping bin and the annular connecting plate of the present invention; Figure 5 This is a schematic diagram of the internal structure of the oil pumping bin of the present invention; Figure 6 This is a schematic diagram of the connection between the piston and the mounting bracket of the present invention; Figure 7This is a schematic diagram of the connection between the locking pin and the first link of the present invention; Figure 8 It is a schematic diagram of the connection between the locking pin and the filling pin of the present invention.

[0017] Figure: 1. Air compressor body; 2. Driving element; 3. Air intake pipe; 4. Compressed air exhaust pipe; 5. Oil inlet pipe; 6. Piston cylinder; 601. Compression chamber; 602. Transition chamber; 603. Annular partition; 604. Annular oil drain groove; 7. Oil extraction chamber; 8. Annular connecting plate; 9. Extension rod; 10. Oil drain pipe; 11. Piston; 12. Sealing ring plate; 13. Spur gear; 14. Spur rack; 15. Ratchet; 16. Pawl; 17. First transmission shaft; 18. Transmission bevel gear; 19. Snail Rod; 20, worm gear; 21, U-shaped connecting frame; 22, second transmission shaft; 23, annular plug plate; 24, first one-way valve; 25, second one-way valve; 26, push rod; 27, first telescopic spring; 28, swing rod; 29, locking hole; 30, locking pin; 31, first link; 32, annular electromagnet; 33, second link; 34, limiting guide plate; 35, mounting frame; 36, slider; 37, second telescopic spring; 38, compensation pin; 39, oblique connecting rod; 40, third telescopic spring. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or connected in one piece; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0020] See also Figures 1 to 8 In an embodiment of the present invention, a piston air compressor includes an air compressor body 1, a driving member 2 is installed on the top of the air compressor body 1, a piston cylinder 6 is connected to the top of the driving member 2, an air intake pipe 3 is installed on one side of the top of the piston cylinder 6, and a compressed air exhaust pipe 4 connected to the top of the piston cylinder 6 is provided on the top of the air compressor body 1. The piston cylinder 6 is composed of a compression chamber 601, a transition chamber 602, an annular partition 603, and an annular oil drain groove 604. The annular partition 603 is installed on the inner wall of the piston cylinder 6, the compression chamber 601 and the transition chamber 602 are respectively located above and below the annular partition 603, the annular oil drain groove 604 is opened on the inner side of the compression chamber 601, the interior of the compression chamber 601 is slidably connected with a piston 11, the bottom of the piston 11 is provided with a compensation buffer, the piston 11 is connected to the crank rocker mechanism on the driving member 2 through the compensation buffer, the inner side of the transition chamber 602 is provided with a one-way counting member, and the outer side of the piston cylinder 6 is provided with an intermittent oil spraying member.

[0021] In this embodiment, the driving member 2 is started, and the operation of the driving member 2 drives the piston 11 to move up and down reciprocatingly. When the piston 11 moves downward, external air will enter the compression chamber 601 through the air inlet pipe 3. When the piston 11 moves upward, the air inside the compression chamber 601 will be compressed by the piston 11, and the compressed air will be discharged through the compressed air exhaust pipe 4. During the reciprocating movement of the piston 11, the one-way counting member is driven to drive the intermittent oil spraying member to operate. When the piston 11 moves up and down a specified number of times, the intermittent oil spraying member will spray lubricating oil into the annular oil discharge groove 604. At this time, the lubricating oil can fully contact the surrounding area of ​​the piston 11 during the up and down movement of the piston 11. When the driving member 2 stops operating, the distance compensation buffer member disconnects the piston 11 from the crank rocker mechanism on the driving member 2, thereby allowing the piston 11 to recover under the reaction force of the compressed air inside the compression chamber 601, thereby preventing the crank and other transmission components from being subjected to static tension or pressure after the driving member 2 stops.

[0022] Please refer to Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 、 Figure 8 The compensation buffer includes an extension rod 9 installed at the bottom of the piston 11 and extending to the inner side of the transition chamber 602. Locking holes 29 are opened on both sides of the bottom of the extension rod 9. A locking pin 30 is inserted into the locking hole 29. A compensation pin 38 extending into the interior of the locking pin 30 is inserted on the side of the locking pin 30 away from the locking hole 29. A third telescopic spring 40 connected to the inner wall of the locking pin 30 is provided at one end of the compensation pin 38. A limiting guide plate 34 is provided on the outer side of the compensation pin 38. A second link 33 is installed at the bottom of the limiting guide plate 34. A mounting bracket 35 connected to the crank rocker mechanism on the driving member 2 is provided at the bottom of the second link 33. An annular electromagnet 32 ​​is installed on the top of the second link 33. The compensation buffer also includes a slider 36 that is movably sleeved on the limiting guide plate 34. One end of the slider 36 is provided with a first link 31 located above the annular electromagnet 32. The top of the first link 31 is installed with a second telescopic spring 37 connected to one side of the limiting guide plate 34. The two sides of the slider 36 are rotatably connected to the oblique connecting rod 39 connected to the end of the compensation pin 38 away from the locking pin 30 through a rotating shaft.

[0023] Among them, one end of the locking pin 30 away from the supplementary pin 38 is rotatably connected to a ball through a rotating shaft, and the length of the extension rod 9 is greater than the maximum distance of vertical movement of the locking pin 30.

[0024] In this embodiment, when the driving member 2 is in operation, the annular electromagnet 32 ​​is energized, and the annular electromagnet 32 ​​will attract the first link 31. At this time, the first link 31 will move downward relative to the limit guide plate 34, so that the locking pins 30 on both sides of the extension rod 9 move toward each other, so that one end of the locking pin 30 is inserted into the inner side of the locking hole 29. At this time, the crank rocker mechanism on the driving member 2 drives the mounting frame 35 to move up and down reciprocatingly, and the locking pin 30 drives the extension rod 9 to move up and down reciprocatingly, so that the piston 11 presses the air. Compression, exhaust, when the driving part 2 stops working, the annular electromagnet 32 ​​is powered off, and the first link 31 will separate from the annular electromagnet 32 ​​under the action of the elastic restoring force of the second telescopic spring 37. At this time, the oblique connecting rod 39 will squeeze the filling pin 38, so that the oblique connecting rod 39 drives the filling pin 38 to move away from the center of the extension rod 9, so as to separate the locking pin 30 from the locking hole 29. At this time, the piston 11 will lose its supporting force, so that the compressed air remaining in the compression chamber 601 exerts a force on the piston 11, so that the piston 11 can be The piston 11 is moved relative to the compression chamber 601, thereby pushing the piston 11 to a position in contact with the annular partition 603, so that the piston 11 can be restored, thereby preventing the incompletely compressed air in the compression chamber 601 from exerting continuous pressure on the piston 11 when the piston 11 stops at the middle position of the compression chamber 601, and also preventing the piston 11 from being subjected to continuous "back thrust", causing the transmission parts such as the connecting rod and the crank and the sealing ring on the piston 11 to bear static tension or pressure, thereby improving the service life of the equipment. When the driving member 2 is operated again, the annular electromagnet 32 ​​is energized to the first connecting ring 31 is adsorbed. At this time, since the locking pin 30 and the locking hole 29 are in a misaligned state, one end of the locking pin 30 will fit into the extension rod 9. At the same time, the compensation pin 38 will move relative to the locking pin 30 due to the pulling of the oblique connecting rod 39, thereby causing the third telescopic spring 40 to contract. When the mounting bracket 35 moves with the movement of the crank rocker mechanism so that the locking pin 30 is aligned with the locking hole 29, the locking pin 30 will be inserted into the oblique connecting rod 39 under the action of the elastic restoring force of the third telescopic spring 40, thereby realizing the transmission connection between the mounting bracket 35 and the extension rod 9.

[0025] Please refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5The one-way counting member includes a straight rack 14 mounted on the bottom of the piston 11, and the outer wall of the piston cylinder 6 is provided with a first transmission shaft 17 extending to the inside of the transition chamber 602. One end of the first transmission shaft 17 is provided with a transmission bevel gear 18 located on the outside of the piston cylinder 6, and the other end of the first transmission shaft 17 is rotatably connected to the spur gear 13 through a bearing. The spur gear 13 is meshed with the spur rack 14, and the end of the spur gear 13 close to the first transmission shaft 17 is rotatably connected to the pawl 16 through a rotating shaft. The connection between the pawl 16 and the spur gear 13 is clamped with a torsion spring through a slot, and one end of the first transmission shaft 17 is provided with a ratchet 15 meshing with the pawl 16. The outer wall of the piston cylinder 6 is rotatably connected to a worm 19, and a transmission bevel gear 18 is also provided at the bottom of the worm 19. The first transmission shaft 17 and the worm 19 are transmission-connected through the transmission bevel gear 18. The outer wall of the piston cylinder 6 is rotatably connected to a second transmission shaft 22, and a worm wheel 20 meshing with the worm 19 is provided on the second transmission shaft 22.

[0026] Among them, a rectangular hole with a length and width greater than the length and width of the cross-section of the spur rack 14 is opened on the annular partition 603, and a damping pad is provided at the connection between the first transmission shaft 17 and the piston cylinder 6. The damping pad is used to increase the friction between the first transmission shaft 17 and the piston cylinder 6 to prevent the first transmission shaft 17 from rotating synchronously with the spur gear 13 when the spur gear 13 rotates relative to the first transmission shaft 17.

[0027] In this embodiment, when the piston 11 moves upward, the spur rack 14 will drive the spur gear 13 to rotate a certain angle. At this time, the spur gear 13 drives the ratchet 15 to rotate through the pawl 16, so that the first transmission shaft 17 drives the transmission bevel gear 18 to rotate. The transmission bevel gear 18 at one end of the first transmission shaft 17 and the transmission bevel gear 18 at the bottom of the worm 19 are driven to make the worm gear 20 drive the second transmission shaft 22 to rotate a certain angle. When the spur rack 14 moves downward with the piston 11, the pawl 16 on the spur gear 13 cannot be engaged with the ratchet 15. At this time, the spur rack 14 The wheel 13 will rotate relative to the first transmission shaft 17, so that the second transmission shaft 22 can rotate unidirectionally by a certain angle when the piston 11 makes a reciprocating movement. In conjunction with the intermittent oil spraying parts, the inner wall of the compression chamber 601 can be lubricated according to the number of frictions between the piston 11 and the inner wall of the compression chamber 601, so as to prevent the lubricating oil from being injected frequently and causing the lubricating oil to remain inside the compression chamber 601 to form oil residue. At the same time, it also prevents the friction between the piston 11 and the compression chamber 601 from increasing due to the low lubrication frequency, thereby achieving maintenance of the piston 11 and the compression chamber 601.

[0028] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5The intermittent oil spraying member includes an oil pumping tank 7 installed on the outer wall of the piston cylinder 6 and at the same horizontal height as the annular oil drain groove 604. An oil inlet pipe 5 is provided on the top of the oil pumping tank 7. The end of the oil inlet pipe 5 away from the oil pumping tank 7 is connected to the external lubricating oil storage tank. A first one-way valve 24 is installed on the oil inlet pipe 5. The top of the oil pumping tank 7 is provided with an oil drain pipe 10 extending to the inside of the annular oil drain groove 604. The inner wall of 7 is slidably connected with an annular plug plate 23, and the bottom of the annular plug plate 23 is provided with a push rod 26 extending to the bottom of the oil pumping bin 7, the bottom of the push rod 26 is installed with an annular connecting plate 8, and the bottom of the annular connecting plate 8 is provided with a U-shaped connecting frame 21. The second transmission shaft 22 is provided with a swing rod 28 located on both sides of the worm gear 20, and the top of the annular connecting plate 8 is provided with a first telescopic spring 27 connected to the bottom of the oil pumping bin 7. A sealing ring plate 12 is installed at the bottom edge of the piston 11.

[0029] Among them, there are multiple second one-way valves 25, and the multiple second one-way valves 25 are distributed at equal distances along the center of the oil pumping bin 7. The liquid inlet end of the second one-way valve 25 is connected to the top of the oil pumping bin 7, and the liquid inlet end of the first one-way valve 24 faces the external lubricating oil storage tank.

[0030] In this embodiment, when the worm gear 20 drives the second transmission shaft 22 to rotate clockwise, the swing rod 28 will push and squeeze the U-shaped connecting frame 21, so that the U-shaped connecting frame 21 drives the annular connecting plate 8 to move downward. At this time, the annular connecting plate 8 drives the annular plug plate 23 to move downward through the push rod 26, so that the space above the annular plug plate 23 is in a negative pressure state, so that the lubricating oil can enter the oil pumping tank 7 through the oil inlet pipe 5. As the swing rod 28 intermittently swings clockwise to make the U-shaped connecting frame 21 drive the annular connecting plate 8 to move downward intermittently, when the swing rod 28 is turned to the vertical state, the swing rod 2 8 The end away from the second transmission shaft 22 will separate from the U-shaped connecting frame 21. At this time, the U-shaped connecting frame 21 will recover under the action of the elastic restoring force of the first telescopic spring 27, so that the annular connecting plate 8 drives the annular plug plate 23 to squeeze the lubricating oil inside the oil pumping bin 7, so that the lubricating oil inside the oil pumping bin 7 is evenly injected into the annular oil drain groove 604. At this time, the sealing ring plate 12 will drive the lubricating oil to be laid when the piston 11 moves, so that the lubricating oil is in full contact with the outer wall of the piston 11, so as to improve the lubrication effect of the equipment. There is no need for staff to manually lubricate the piston 11, and the operation is simple.

[0031] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A piston air compressor, comprising an air compressor body (1), characterized in that: A driving member (2) is installed on the top of the air compressor body (1), and a piston cylinder (6) is connected to the top of the driving member (2). An air intake pipe (3) is installed on one side of the top of the piston cylinder (6). A compressed air exhaust pipe (4) connected to the top of the piston cylinder (6) is provided on the top of the air compressor body (1). The piston cylinder (6) is composed of a compression chamber (601), a transition chamber (602), an annular partition (603), and an annular oil drain groove (604). The annular partition (603) is installed on the inner wall of the piston cylinder (6). The compression chamber (601) and the transition chamber (602) are respectively located above and below the annular partition (603); the annular oil drain groove (604) is opened on the inner side of the compression chamber (601); the interior of the compression chamber (601) is slidably connected to a piston (11); a compensation buffer is provided at the bottom of the piston (11); the piston (11) is connected to a crank rocker mechanism on the driving member (2) through the compensation buffer; a one-way counting member is provided on the inner side of the transition chamber (602); and an intermittent oil spraying member is installed on the outer side of the piston cylinder (6).

2. A piston air compressor according to claim 1, characterized in that: The compensation buffer comprises an extension rod (9) mounted on the bottom of the piston (11) and extending to the inner side of the transition chamber (602), locking holes (29) are provided on both sides of the bottom of the extension rod (9), a locking pin (30) is inserted into the interior of the locking hole (29), a compensation pin (38) extending into the interior of the locking pin (30) is inserted on the side of the locking pin (30) away from the locking hole (29), one end of the compensation pin (38) is provided with a third telescopic spring (40) connected to the inner wall of the locking pin (30), a limiting guide plate (34) is provided on the outer side of the compensation pin (38), a second link (33) is installed at the bottom of the limiting guide plate (34), a mounting frame (35) connected to the crank rocker mechanism on the driving member (2) is provided at the bottom of the second link (33), and a ring-shaped electromagnet (32) is installed on the top of the second link (33).

3. A piston air compressor according to claim 2, characterized in that: The compensation buffer also includes a slider (36) movably sleeved on the limiting guide plate (34), one end of the slider (36) is provided with a first link (31) located above the annular electromagnet (32), the top of the first link (31) is provided with a second telescopic spring (37) connected to one side of the limiting guide plate (34), and both sides of the slider (36) are rotatably connected to an oblique connecting rod (39) connected to the end of the compensation pin (38) away from the locking pin (30) through a rotating shaft.

4. A piston air compressor according to claim 3, characterized in that: One end of the locking pin (30) away from the supplementary pin (38) is rotatably connected to a ball via a rotating shaft, and the length of the extension rod (9) is greater than the maximum vertical movement distance of the locking pin (30).

5. A piston air compressor according to claim 3, characterized in that: The one-way counting member includes a straight rack (14) installed at the bottom of the piston (11), the outer wall of the piston cylinder (6) is provided with a first transmission shaft (17) extending to the inner side of the transition chamber (602), one end of the first transmission shaft (17) is provided with a transmission bevel gear (18) located outside the piston cylinder (6), the other end of the first transmission shaft (17) is rotatably connected to a straight gear (13) through a bearing, the straight gear (13) is meshed with the straight rack (14), and the end of the straight gear (13) close to the first transmission shaft (17) is rotatably connected to a ratchet (16) through a rotating shaft, and the ratchet (18) is rotated to rotate. 6) is connected to the spur gear (13) by a torsion spring through a slot, one end of the first transmission shaft (17) is provided with a ratchet (15) meshing with the pawl (16), the outer wall of the piston cylinder (6) is rotatably connected to the worm (19), the bottom of the worm (19) is also provided with a transmission bevel gear (18), the first transmission shaft (17) and the worm (19) are connected by transmission through the transmission bevel gear (18), the outer wall of the piston cylinder (6) is rotatably connected to the second transmission shaft (22), and the second transmission shaft (22) is provided with a worm wheel (20) meshing with the worm (19).

6. A piston air compressor according to claim 5, characterized in that: The annular partition (603) is provided with a rectangular hole, the length and width of which are both greater than the length and width of the cross section of the spur rack (14).

7. A piston air compressor according to claim 5, characterized in that: A damping pad is provided at the connection between the first transmission shaft (17) and the piston cylinder (6), and the damping pad is used to increase the friction between the first transmission shaft (17) and the piston cylinder (6), thereby preventing the first transmission shaft (17) from rotating synchronously with the spur gear (13) when the spur gear (13) rotates relative to the first transmission shaft (17).

8. The piston air compressor according to claim 5, characterized in that: The intermittent oil spraying member includes an oil pumping tank (7) installed on the outer wall of the piston cylinder (6) and at the same level as the annular oil drain groove (604), an oil inlet pipe (5) is provided on the top of the oil pumping tank (7), and the end of the oil inlet pipe (5) away from the oil pumping tank (7) is connected to the external lubricating oil storage tank, a first one-way valve (24) is installed on the oil inlet pipe (5), the top of the oil pumping tank (7) is provided with a second one-way valve (25), the top of the second one-way valve (25) is provided with an oil drain pipe (10) extending to the inside of the annular oil drain groove (604), and the oil pumping tank (7) The inner wall of the piston (22) is slidably connected to an annular plug plate (23), the bottom of the annular plug plate (23) is provided with a push rod (26) extending to the bottom of the oil pumping bin (7), the bottom of the push rod (26) is installed with an annular connecting plate (8), the bottom of the annular connecting plate (8) is provided with a U-shaped connecting frame (21), the second transmission shaft (22) is provided with a swing rod (28) located on both sides of the worm gear (20), the top of the annular connecting plate (8) is provided with a first telescopic spring (27) connected to the bottom of the oil pumping bin (7), and a sealing ring plate (12) is installed at the bottom edge of the piston (11).

9. A piston air compressor according to claim 8, characterized in that: There are multiple second one-way valves (25), and the multiple second one-way valves (25) are distributed at equal distances along the center of the oil pumping tank (7).

10. The piston air compressor according to claim 8, characterized in that: The liquid inlet end of the second one-way valve (25) is connected to the top of the oil pumping tank (7), and the liquid inlet end of the first one-way valve (24) faces the external lubricating oil storage tank.

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