Crankshaft linkage multi-cylinder compression system

Abstract

A crankshaft linkage multi-cylinder compression system relates to a gas compressor and is characterized in that a power output shaft of a motor is fixedly connected with the inner end of a crank B, the outer end of the crank B is fixedly connected with the outer end of a crank A through a penetrating rod, a mounting hole B in the inner end of the crank A is fixedly connected with one end of a shaft front end, and the other end of the shaft front end is movably connected with a shaft seat; a bearing inner ring in a sleeve ring in the middle of each transmission rod of an X-shaped structure is fixedly connected with the middle of a penetrating rod, the outer ends of the four transmission rods are hinged to the inner ends of piston connecting rods within the range of 60 degrees respectively, and the outer ends of the four piston connecting rods are hinged to pistons in the four air cylinders respectively. The four cylinders distributed in a radial shape are respectively connected with the fixing ring, and the outer ends of the four cylinders are respectively provided with an exhaust port and an air inlet; the four transmission rods distributed in an X-shaped structure are simultaneously driven through the crankshaft, and small-space simultaneous operation of the four air cylinders is achieved.

Description

Technical Field

[0001] The present invention relates to a gas compressor, in particular to a crankshaft-linked multi-cylinder compression system. Background Art

[0002] The function of a compressor is to compress low-pressure gas into high-pressure gas. The compressed gas has a wide range of uses, mainly for the compression of inert gases, such as xenon, argon or helium, sulfur hexafluoride (SF6); SF6 (sulfur hexafluoride) gas in the power system; leakage of natural gas in large compression systems; purification of nitrogen by inert gas processing; extraction of carbon dioxide from supercritical CO2 process; leakage gas accumulated during the processing, such as carbon monoxide (CO), sulfur hexafluoride (SF6), etc. Conventional gas compression methods mostly use a main crankshaft to set multiple crank arms in groups of two, and then each group of crank arms drives a piston connecting rod of a cylinder, so that the cylinder forms a multi-stage compression arranged in a straight line. Although it can be driven by a motor, it occupies a large space and is very inconvenient to install and repair, especially the maintenance cost is extremely high; when used in some places with small spaces, due to the long and heavy body, it is inconvenient to move and is not conducive to the use of small spaces. Summary of the invention

[0003] The purpose of the present invention is to disclose a crankshaft-linked multi-cylinder compression system based on the existing deficiencies, which simultaneously drives four transmission rods distributed in an X-shaped structure through the crankshaft to obtain simultaneous operation of four cylinders in a small space.

[0004] In order to achieve the purpose of the invention, this application discloses the following technical solutions: A crankshaft-linked multi-cylinder compression system comprises a motor, a power output shaft, a crank B, a connecting rod, a crank A, a shaft front end, a shaft seat, an X-shaped transmission rod, a piston connecting rod, a cylinder and a fixed ring. The power output shaft of the motor is fixedly connected to the inner end of the crank B, the outer end of the crank B is fixedly connected to the outer end of the crank A through the connecting rod, the mounting hole B at the inner end of the crank A is fixedly connected to one end of the shaft front end, and the other end of the shaft front end is movably connected to the shaft seat; the inner ring of the bearing in the middle sleeve of the X-shaped transmission rod is fixedly connected to the middle of the connecting rod, the outer ends of the four transmission rods are respectively hingedly connected to the inner ends of the piston connecting rods within an angle range of sixty degrees, and the outer ends of the four piston connecting rods are respectively hingedly connected to the pistons in the four cylinders; the four radially distributed cylinders are respectively connected to the fixed ring, and exhaust ports and air inlets are respectively provided at the outer ends of the four cylinders.

[0005] In the crankshaft-linked multi-cylinder compression system, the lower part of the motor is fixed to the rear part of the base, the lower part of the shaft seat is fixed to the front part of the base through a support body, and both sides of the fixing ring are fixedly connected to the middle part of the lower base through support plates.

[0006] The crankshaft-linked multi-cylinder compression system has a power output shaft of the motor and a mounting hole A at the inner end of the crank B, the outer end of the crank A is fixedly connected to one end of the connecting rod, the inner ring of the bearing is fixedly connected to the middle part of the connecting rod, a fixed liner ring is provided on the outer edge near one end of the connecting rod, a movable liner ring is sleeved on the outer edge near the other end of the connecting rod, the other end of the connecting rod is fixedly connected to the mounting hole C at the outer end of the crank A, and a fixing ring is provided between the other end of the connecting rod and the mounting hole C.

[0007] The crankshaft-linked multi-cylinder compression system is provided with square tubes at the outer ends of the four transmission rods of the X-shaped structure, and connecting plates are provided at the inner ends of the four piston connecting rods of the four cylinders. The four connecting plates of the four piston connecting rods are inserted into the square pits on the outer end faces of the square tubes of the four transmission rods. The middle parts of the four shaft rods are respectively connected to the axial holes of the four connecting plates. The two ends of the four shaft rods are respectively fixedly connected to the axial holes A of the square tubes of the four transmission rods. The square tubes of the four transmission rods limit the swing of the four hinged connecting plates within an angle range of sixty degrees.

[0008] The crankshaft-linked multi-cylinder compression system replaces the inner ends of the piston connecting rods with square tubes, and the outer ends of the four transmission rods with connecting plates, which are then connected through shafts to form an articulated connection.

[0009] The crankshaft-linked multi-cylinder compression system is characterized in that a shaft tube is provided at the outer end of the piston connecting rod, shaft holes B are provided on both sides of the middle of the piston, the middle of the piston pin shaft is passed through the shaft tube, and the two ends of the piston pin shaft are respectively passed through the shaft hole B, and bushings are respectively sleeved on the piston pin shafts at both ends of the shaft tube, and retaining ring grooves are respectively provided on the outer sides of the shaft hole B at both ends of the piston pin shaft, and two retaining rings are respectively clamped in the retaining ring grooves.

[0010] The crankshaft-linked multi-cylinder compression system has a plurality of surrounding gas ring grooves on the outer edge of the piston, gas rings matching the number of the gas ring grooves are clamped in the gas ring grooves, and an oil ring is arranged on the outer end surface of the piston.

[0011] Through the above disclosure, the beneficial effects of the present invention are: The crankshaft-linked multi-cylinder compression system described in the present invention utilizes the bearings arranged between the X-shaped transmission rod and the connecting rod to obtain the rotation of the connecting rod, while the X-shaped transmission rod only performs synchronous swinging and does not rotate, thereby transmitting the rotational power of the connecting rod to the four transmission rods and the piston connecting rod; the articulated connection between the square tube and the piston connecting rod within a limited range arranged at the outer ends of the four transmission rods and the articulated connection between the piston connecting rod and the piston can enable the piston to avoid the cylinder pulling phenomenon caused by angle change while obtaining linear push and pull; the present invention uses a power point of the crank arm to control the movement of four pistons at the same time, and can realize multi-cylinder linkage on the same surface in a small space, and can support two sets of two-pole compression systems to work synchronously, and can also realize a set of four-pole gas compression; the present invention changes the traditional long crankshaft and large space multi-cylinder compression mode by changing the power structure of the crankshaft, and realizes multi-cylinder compression in a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the crankshaft, transmission rod and cylinder of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the transmission rod and the crankshaft of the present invention; Figure 4 It is a schematic diagram of the three-dimensional assembly structure of the transmission rod and the crankshaft of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the piston of the present invention; In the figure: 1. Cylinder A; 2. Motor; 3. Power output shaft; 4. Front end of shaft; 5. Upper compressed gas output pipe; 6. Upper gas outflow pipe; 7. Exhaust tank; 8. Lower compressed gas output pipe; 9. Base; 10. Fixing ring; 11. Support plate; 12. Lower gas outflow pipe; 13. Cylinder B; 14. Lower air pipe; 15. Cylinder C; 16. Lower air inlet pipe; 17. Shaft seat; 18. Transmission rod; 19. Shaft rod; 20. Square tube; 21. Piston connecting rod; 22. Upper air inlet pipe; 23. Cylinder D; 24. One-way valve A; 25. One-way valve B ; 26. Upper air pipe; 27. Exhaust port; 28. Inlet port; 29. ​​Crank A; 30. Through rod; 31. Square pit; 32. Shaft hole A; 33. Crank B; 34. Fixed ring; 35. Sleeve ring; 36. Mounting hole A; 37. Fixed bushing; 38. Bearing; 39. Movable bushing; 40. Mounting hole B; 41. Mounting hole C; 42. Oil ring; 43. Gas ring; 44. Gas ring groove; 45. Shaft hole B; 46. Piston; 47. Snap ring groove; 48. Snap ring; 49. Bushing; 50. Piston pin; 51. Shaft tube; 52. Connecting piece. DETAILED DESCRIPTION

[0013] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings so as to more clearly understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to explain that the technical solution of the present invention is not limited to one implementation method.

[0014] Combined with Figures 1 to 5 The crankshaft-linked multi-cylinder compression system described in the specification includes a motor 2, a power output shaft 3, a crank B33, a connecting rod 30, a crank A29, a shaft front end 4, a shaft seat 17, an X-shaped structure transmission rod 18, a piston connecting rod 21, a cylinder and a fixing ring 10. The power output shaft 3 of the motor 2 is connected to the mounting hole A36 at the inner end of the crank B33, the outer end of the crank A29 is fixedly connected to one end of the connecting rod 30, and the inner ring of the bearing 38 is fixedly connected to the middle part of the connecting rod 30. A fixed bushing 37 is provided on the outer edge of one end of the connecting rod 30, and a movable bushing 39 is sleeved on the outer edge of the other end of the connecting rod 30. The other end of the connecting rod 30 is fixedly connected to the mounting hole C41 at the outer end of the crank A29. A fixed ring 34 is provided between the other end of the connecting rod 30 and the mounting hole C41. The mounting hole B40 at the inner end of the crank A29 is fixedly connected to one end of the shaft front end 4, and the other end of the shaft front end 4 is movably connected to the shaft seat 17; X-shaped structure The inner ring of the bearing 38 in the middle ring 35 of the transmission rod 18 is fixedly connected to the middle of the connecting rod 30, and the outer ends of the four transmission rods 18 are respectively hingedly connected to the inner ends of the piston connecting rod 21 within an angle of sixty degrees, and the outer ends of the four piston connecting rods 21 are respectively hingedly connected to the pistons 46 in the four cylinders; the four radially distributed cylinders are respectively connected to the fixing ring 10, and exhaust ports 27 and air inlets 28 are respectively provided at the outer ends of the four cylinders. The lower part of the motor 2 is fixed to the rear part of the base 9, and the lower part of the shaft seat 17 is fixed to the front part of the base 9 through a support body. The two sides of the fixing ring 10 are respectively fixedly connected to the middle of the lower base 9 through support plates 11. The present invention can be a group of four cylinders distributed clockwise through four-stage compression of intake and exhaust (not shown in the figure, the intake pipe and exhaust pipe can be arranged according to needs), or when the four cylinders are in groups of two, two sets of independent compression two-stage compression of the intake and exhaust of each group can be used.

[0015] Combined with Figure 1 , 2, 3 or 4, square tubes 20 are respectively provided at the outer ends of the four transmission rods 18 of the X-shaped structure, and connecting plates 52 are respectively provided at the inner ends of the four piston connecting rods 21 of the four cylinders. The four connecting plates 52 of the four piston connecting rods 21 are inserted into the square pits 31 on the outer end faces of the square tubes 20 of the four transmission rods 18, and the middle parts of the four shaft rods 19 are respectively penetrated by the axial holes of the four connecting plates 52. The two ends of the four shaft rods 19 are respectively fixedly connected to the axial holes A32 of the square tubes 20 of the four transmission rods 18, and the square tubes 20 of the four transmission rods 18 limit the four hingedly connected connecting plates 52 to swing within an angle range of sixty degrees; as a replacement, the inner ends of the piston connecting rods 21 are respectively replaced by the square tubes 20, and the outer ends of the four transmission rods 18 are respectively replaced by the connecting plates 52, and then they are connected through the shaft rods 19 to form a hinged connection.

[0016] Combined with Figure 5 A shaft tube 51 is provided at the outer end of the piston connecting rod 21, and shaft holes B45 are respectively provided on both sides of the middle of the piston 46. The middle of the piston pin 50 passes through the shaft tube 51, and the two ends of the piston pin 50 pass through the shaft holes B45 respectively. Bushings 49 are respectively sleeved on the piston pin 50 at both ends of the shaft tube 51, and the outer sides of the shaft holes B45 at both ends of the piston pin 50 are respectively provided with retaining ring grooves 47, and two retaining rings 48 are respectively clamped in the retaining ring grooves 47; a plurality of surrounding gas ring grooves 44 are provided on the outer edge surface of the piston 46, and gas rings 43 matching the number of gas ring grooves 44 are clamped in the gas ring grooves 44, and an oil ring 42 is provided on the outer end surface of the piston 46.

[0017] The crankshaft-linked multi-cylinder compression system of the present invention is used in combination with the attached Figures 1 to 5The method of using the present invention is that when the four cylinders are grouped in pairs to form two sets of independent compression and two-stage compression, the cylinder D23 is connected to the air source through the upper air intake pipe 22 and the one-way valve A24 at the outer end of the cylinder D23; at the same time, the cylinder C15 is connected to the air source through the lower air intake pipe 16 and the one-way valve A24 at the outer end of the cylinder C15. After starting the motor 2, the outer ends of the crank A29 and the crank B33 are rotated by the cylinder D23 and the cylinder C15 to be close to the cylinder A1 and the cylinder B13. At this time, the gas to be compressed is sucked into the cylinder D23 and the cylinder C15 respectively, and then the outer ends of the crank A29 and the crank B33 continue to rotate to the direction of the cylinder D23 and the cylinder C15. At this time, the piston 46 of the cylinder D23 and the piston 46 of the cylinder C15 are pushed by the piston connecting rod 21. At this time, the gas that has been initially compressed is discharged from the cylinder D23 through the one-way valve at the outer end. B25 and the lower air pipe 14 enter the cylinder B13 after passing through the one-way valve A24 at the outer end of the cylinder B13. Similarly, the gas that has been initially compressed enters the cylinder A1 through the one-way valve B25 at the outer end and the upper air pipe 26 through the one-way valve A24 at the outer end of the cylinder A1. At this time, the outer ends of the crank A29 and the crank B33 continue to rotate, and the cylinder D23 and the cylinder C15 continue to inhale. The gas that is squeezed and compressed for the second time in the cylinder A1 enters the upper cavity of the exhaust tank 7 through the one-way valve B25 at the outer end and the upper gas outflow pipe 6, and then is used through the pressure gauge and the upper compressed gas output pipe 5; the gas that is squeezed and compressed for the second time in the cylinder B13 enters the lower cavity of the exhaust tank 7 through the one-way valve B25 at the outer end and the lower gas outflow pipe 12, and then is used through the pressure gauge and the lower compressed gas output pipe 8.

[0018] The preferred embodiments of the present invention have been described in detail above, but it should be understood that after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications within the scope of protection of the present invention. These equivalent forms also fall within the scope defined by the claims attached to this application.

[0019] The parts not described in detail in this invention are prior art.

Claims

1. A crankshaft-linked multi-cylinder compression system, comprising a motor (2), a power output shaft (3), a crank B (33), a connecting rod (30), a crank A (29), a shaft front end (4), a shaft seat (17), an X-shaped structure transmission rod (18), a piston connecting rod (21), a cylinder and a fixing ring (10), wherein: The power output shaft (3) of the motor (2) is fixedly connected to the inner end of the crank B (33), the outer end of the crank B (33) is fixedly connected to the outer end of the crank A (29) through the connecting rod (30), the mounting hole B (40) at the inner end of the crank A (29) is fixedly connected to one end of the shaft front end (4), and the other end of the shaft front end (4) is movably connected to the shaft seat (17); the inner ring of the bearing (38) in the middle ring (35) of the X-shaped structure transmission rod (18) is fixedly connected to the middle of the connecting rod (30), the outer ends of the four transmission rods (18) are respectively hingedly connected to the inner ends of the piston connecting rods (21) within an angle range of sixty degrees, and the outer ends of the four piston connecting rods (21) are respectively hingedly connected to the pistons (46) in the four cylinders; the four radially distributed cylinders are respectively connected to the fixing ring (10), and the outer ends of the four cylinders are respectively provided with exhaust ports (27) and air inlets (28).

2. The crankshaft-linked multi-cylinder compression system according to claim 1, characterized in that: The lower part of the motor (2) is fixed to the rear part of the base (9), the lower part of the shaft seat (17) is fixed to the front part of the base (9) through a support body, and both sides of the fixing ring (10) are fixedly connected to the middle part of the lower base (9) through support plates (11).

3. The crankshaft-linked multi-cylinder compression system according to claim 1, characterized in that: The power output shaft (3) of the motor (2) is connected to the mounting hole A (36) at the inner end of the crank B (33); the outer end of the crank A (29) is fixedly connected to one end of the connecting rod (30); the inner ring of the bearing (38) is fixedly connected to the middle part of the connecting rod (30); a fixed bushing (37) is provided on the outer edge of the connecting rod (30) near one end; a movable bushing (39) is sleeved on the outer edge of the connecting rod (30) near the other end; the other end of the connecting rod (30) is fixedly connected to the mounting hole C (41) at the outer end of the crank A (29); and a fixed ring (34) is provided between the other end of the connecting rod (30) and the mounting hole C (41).

4. The crankshaft-linked multi-cylinder compression system according to claim 1 is characterized in that: The outer ends of the four transmission rods (18) of the X-shaped structure are respectively provided with square tubes (20), and the inner ends of the four piston connecting rods (21) of the four cylinders are respectively provided with connecting plates (52). The four connecting plates (52) of the four piston connecting rods (21) are inserted into square pits (31) on the outer end surfaces of the square tubes (20) of the four transmission rods (18). The middle parts of the four shaft rods (19) are respectively inserted into the shaft holes of the four connecting plates (52). The two ends of the four shaft rods (19) are respectively fixedly connected to the shaft holes A (32) of the square tubes (20) of the four transmission rods (18). The four hinged connecting plates (52) are restricted by the square tubes (20) of the four transmission rods (18) to swing within an angle range of sixty degrees.

5. The crankshaft-linked multi-cylinder compression system according to claim 4, characterized in that: As a replacement, the inner ends of the piston connecting rod (21) are replaced with square tubes (20), and the outer ends of the four transmission rods (18) are replaced with connecting plates (52), which are then connected via a shaft rod (19) to form a hinged connection.

6. The crankshaft-linked multi-cylinder compression system according to claim 1, characterized in that: The outer end of the piston connecting rod (21) is provided with a shaft tube (51), and shaft holes B (45) are respectively provided on both sides of the middle of the piston (46). The middle of the piston pin (50) passes through the shaft tube (51), and the two ends of the piston pin (50) pass through the shaft holes B (45) respectively. Bushings (49) are respectively sleeved on the piston pin (50) at the two ends of the shaft tube (51), and snap ring grooves (47) are respectively provided on the outer sides of the shaft holes B (45) at the two ends of the piston pin (50), and two snap rings (48) are respectively clamped in the snap ring grooves (47).

7. The crankshaft-linked multi-cylinder compression system according to claim 1 is characterized in that: The outer edge surface of the piston (46) is provided with a plurality of circumferential gas ring grooves (44), gas rings (43) matching the number of the gas ring grooves (44) are clamped in the gas ring grooves (44), and an oil ring (42) is provided on the outer end surface of the piston (46).

Images