CN118128756B - Screw air compressor with axial balancing device - Google Patents
Screw air compressor with axial balancing device Download PDFInfo
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- CN118128756B CN118128756B CN202410557646.3A CN202410557646A CN118128756B CN 118128756 B CN118128756 B CN 118128756B CN 202410557646 A CN202410557646 A CN 202410557646A CN 118128756 B CN118128756 B CN 118128756B
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- 238000007789 sealing Methods 0.000 claims description 92
- 238000000034 method Methods 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 198
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 239000010687 lubricating oil Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 26
- 239000000306 component Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 239000010725 compressor oil Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of air compressors, in particular to a screw air compressor with an axial balancing device, which comprises a screw air compressor body, wherein the screw air compressor body is used for compressing air; the axial balancing mechanism is arranged on the screw air compressor body and is used for balancing axial force; the axial balancing mechanism comprises an oil cylinder cover, the oil cylinder cover is arranged on the screw air compressor body, and an oil inlet is formed in the oil cylinder cover; the lubricating oil is injected into the hydraulic cavity through the oil inlet formed in the oil cylinder cover, the pressure in the hydraulic cavity generates axial thrust to the end faces of the oil cylinder sleeve and the driving shaft, the oil cylinder sleeve performs axial thrust action on the driving shaft, and the axial force of the driving shaft is overcome, namely, the axial force of the driving shaft is balanced, so that the influence of the driving shaft caused by the increase of the exhaust pressure is reduced, the service life of the driving shaft is prolonged, and the equipment failure rate is reduced.
Description
Technical Field
The invention belongs to the technical field of air compressors, and particularly relates to a screw air compressor with an axial balancing device.
Background
Screw air compressor plays an increasingly important role in modern industrial production as a high-efficiency and reliable compressed air device. Its unique screw design provides it with significant advantages in providing a stable, continuous flow of air, and is widely used in various industries.
The core component of the screw air compressor is a compression mechanism consisting of two mutually meshed screws. During the high-speed rotation of the two screws, the sucked air is gradually compressed and discharged through precise fit and clearance adjustment. The design not only improves the compression efficiency, but also greatly reduces the noise and vibration of equipment, so that the screw air compressor is more stable and reliable in the operation process.
However, the above-mentioned techniques often have the following drawbacks: the exhaust pressure of the existing oil injection screw air compressor is generally 0.7-1.2 MPa, the exhaust pressure of the screw air compressor is required to be higher and higher along with the updating of air compressor products in the market, the exhaust pressure is required to be 1.3-2.0 MPa, the service life of a bearing is seriously influenced after the exhaust pressure of the existing screw air compressor is increased, and the equipment failure rate is greatly increased.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a screw air compressor with an axial balancing device, which comprises a screw air compressor body, wherein the screw air compressor body is used for compressing air; the axial balancing mechanism is arranged on the screw air compressor body and is used for balancing axial force; the axial balancing mechanism comprises an oil cylinder cover, the oil cylinder cover is arranged on the screw air compressor body, and an oil inlet is formed in the oil cylinder cover; the driving shaft is arranged in the screw air compressor body, the surface, close to the oil cylinder cover, of the driving shaft is fixedly connected with an oil cylinder sleeve in a sealing manner, and an O-shaped sealing ring is arranged at the joint of the driving shaft and the oil cylinder sleeve; the oil cylinder cover is embedded with a sealing copper sleeve, the inner annular surface of the oil cylinder sleeve is in sliding fit with the outer sealing surface of the sealing copper sleeve on the oil cylinder cover to carry out labyrinth seal, and a hydraulic cavity is formed in a space between the oil cylinder sleeve and the oil cylinder cover.
Preferably, the inner wall of the oil cylinder cover is slidably connected with a circular push plate, a group of round holes are formed in the center of the push plate, a cavity is formed in the push plate, a sealing plate is hermetically and slidably connected in the cavity, a communication groove corresponding to the round holes is formed in the sealing plate, a pair of outlet holes are formed in one side, far away from the oil inlet, of the push plate, the pair of outlet holes are respectively located on the top surface and the bottom surface of the sealing plate, and a moving mechanism for driving the sealing plate to move is arranged in the oil cylinder cover; the oil cylinder cover is internally provided with a round groove, an electric telescopic rod is fixedly connected in the round groove, a round rod is fixedly connected to one side, close to the round groove, of the push plate, the round rod passes through the oil cylinder cover in a sealing mode to reach the inside of the round groove, one end, far away from the sealing plate, of the round rod is fixedly connected with a circular ring, and a first spring is fixedly connected between one side, close to the sealing plate, of the circular ring and the inner wall of the round groove.
Preferably, the moving mechanism comprises a moving groove which is formed in the sealing plate and communicated with the cavity, a push rod is connected in the moving groove in a sealing sliding manner, the top surface of the push rod is fixedly connected with the push plate, a second spring is fixedly connected between the bottom surface of the push rod and the inner wall of the moving groove, a hollow elastic block is fixedly connected to one side of the circular ring, which is far away from the circular rod, a connecting groove which is mutually communicated is formed in the circular rod and the sealing plate, the connecting groove in the sealing plate is communicated with the moving groove, and the connecting groove in the circular rod is communicated with the inside of the elastic block.
Preferably, one side of the sealing plate, which is far away from the oil outlet, is fixedly connected with a guide rod, an oil duct is arranged in the guide rod, a plurality of groups of oil holes communicated with the oil duct are arranged on the side walls of the top surface and the bottom surface of the guide rod, and the oil duct is communicated with the outlet.
Preferably, one side of the push plate, which is close to the guide rod, is slidably connected with a pair of sliding blocks made of magnetic materials, the sliding blocks magnetically attract the sealing plate, the sliding blocks are fixedly connected with a connecting plate through a bracket, and a group of sealing rods for sealing the oil holes are fixedly connected to the connecting plate.
Preferably, the inside of the oil duct is twisted with an arc-shaped plectrum through a torsion spring.
Preferably, the spout with circular slot intercommunication has been seted up in the cylinder cap, the inner wall sliding connection of spout has the movable block, the draw-in groove has been seted up to the bottom surface of movable block, the inner wall sliding connection of spout has the magnetic plate, a set of spacing piece of fixedly connected with on the magnetic plate, fixedly connected with third spring between the bottom surface of magnetic plate and the spout, the top surface fixedly connected with extrusion ring of movable block, the output fixedly connected with of electric telescopic handle is a pair of ejector pad, the inside sliding connection of movable block has the actuating lever that inhales with the magnetic plate magnetism, the top and the ejector pad fixed connection of actuating lever.
Preferably, a gap is formed between the limiting sheets, the gap is larger than the distance between the inner side wall of the clamping groove and the outer wall of the moving block, and the top surfaces of the limiting sheets are arc-shaped.
Preferably, a groove is formed in one side, far away from the oil inlet, of the push plate, and a pressure sensor is fixedly mounted in the groove.
Preferably, the push plate is fixedly connected with an elastic protective sleeve arranged on the groove, and a buffer spring is fixedly connected between the protective sleeve and the pressure sensor.
The beneficial effects of the invention are as follows:
1. According to the invention, the lubricating oil is filled into the hydraulic cavity (screw air compressor oil) through the oil inlet formed in the oil cylinder cover, the pressure in the hydraulic cavity generates axial thrust on the oil cylinder sleeve and the end face of the driving shaft, the oil cylinder sleeve acts on the axial thrust on the driving shaft, and the axial force of the driving shaft is overcome, namely, the axial force of the driving shaft is balanced, so that the influence of the driving shaft caused by the increase of the exhaust pressure is reduced, the service life of the driving shaft is prolonged, and the equipment failure rate is reduced.
2. According to the invention, the sealing plate is moved by the moving mechanism to enable the round hole and the communicating groove to be misplaced, at the moment, the sealing plate can seal the round hole, then the electric telescopic rod is started to enable the output end of the electric telescopic rod to push the round rod, at the moment, the round rod can push the push plate, so that the push plate pushes pressure oil in the hydraulic cavity, the axial thrust of the pressure oil to the driving shaft is increased, the continuous movement of the output end is stopped until the axial force of the driving shaft is balanced, the effect of adjusting the pressure value of the pressure oil in the hydraulic cavity is achieved, and the effect of balancing the axial force of the driving shaft is improved.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present invention;
fig. 2 is a partial structural sectional view of a screw air compressor body according to the present invention;
FIG. 3 is an enlarged view at A of FIG. 2;
FIG. 4 is an enlarged view at B of FIG. 3;
FIG. 5 is a cross-sectional view of a guide bar of the present invention;
FIG. 6 is an enlarged view at C of FIG. 4;
Fig. 7 is a schematic structural diagram of a second embodiment of the present invention.
In the figure: 1. a screw air compressor body; 2. a cylinder head; 3. an oil inlet; 4. sealing the copper sleeve; 5. a driving shaft; 6. a push plate; 7. a round hole; 8. a cavity; 9. a sealing plate; 10. a cylinder liner; 11. a round bar; 12. a circular ring; 13. an elastic block; 14. an electric telescopic rod; 15. a circular groove; 16. a connecting groove; 17. a moving groove; 18. a push rod; 19. a guide rod; 20. an oil hole; 21. an oil passage; 22. a pulling piece; 23. a sealing rod; 24. a connecting plate; 25. a slide block; 26. a pressing ring; 27. a chute; 28. a moving block; 29. a driving rod; 30. a pushing block; 31. a magnetic plate; 32. a limiting piece; 33. a groove; 34. a pressure sensor; 35. a protective sleeve; 36. a buffer spring; 37. and (5) discharging holes.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Embodiment one: as shown in fig. 1 to 6, a screw air compressor with an axial balancing device according to an embodiment of the present invention includes a screw air compressor body 1, where the screw air compressor body 1 is used for compressing air; the axial balancing mechanism is arranged on the screw air compressor body 1 and is used for balancing axial force; the axial balancing mechanism comprises an oil cylinder cover 2, wherein the oil cylinder cover 2 is arranged on the screw air compressor body 1, and an oil inlet 3 is formed in the oil cylinder cover 2; the driving shaft 5 is arranged in the screw air compressor body 1, the surface, close to the oil cylinder cover 2, of the driving shaft 5 is fixedly connected with an oil cylinder sleeve 10 in a sealing manner, and an O-shaped sealing ring is arranged at the joint of the driving shaft 5 and the oil cylinder sleeve 10; the sealing copper sleeve 4 is embedded on the oil cylinder cover 2, the inner ring surface of the oil cylinder sleeve 10 is in sliding fit with the outer circle sealing surface of the sealing copper sleeve 4 on the oil cylinder cover 2 to carry out labyrinth seal, and a hydraulic cavity is formed in a space between the oil cylinder sleeve 10 and the oil cylinder cover 2.
In the prior art, the general exhaust pressure of the oil injection screw air compressor is 0.7-1.2 MPa, the exhaust pressure of the screw air compressor is required to be higher and higher along with the updating of air compressor products in the market, the exhaust pressure is required to be 1.3-2.0 MPa, the service life of a bearing is seriously influenced after the exhaust pressure of the existing screw air compressor is increased, and the equipment failure rate is greatly increased; according to the invention, lubricating oil is injected into a hydraulic cavity (screw air compressor oil) through an oil inlet 3 formed in an oil cylinder cover 2, the pressure in the hydraulic cavity generates axial thrust on the end surfaces of an oil cylinder sleeve 10 and a driving shaft 5, the oil cylinder sleeve 10 performs axial thrust on the driving shaft 5, and the axial force of the driving shaft 5 is overcome, namely, the axial force of the driving shaft 5 is balanced, so that the influence of the driving shaft 5 caused by the increase of exhaust pressure is reduced, the service life of the driving shaft 5 is prolonged, and the equipment failure rate is reduced.
The inner wall of the oil cylinder cover 2 is slidably connected with a circular push plate 6, a group of round holes 7 are formed in the center of the push plate 6, a cavity 8 is formed in the push plate 6, a sealing plate 9 is hermetically and slidably connected in the cavity 8, a communication groove corresponding to the round holes 7 is formed in the sealing plate 9, a pair of outlet holes 37 are formed in one side, far away from the oil inlet 3, of the push plate 6, the pair of outlet holes 37 are respectively located on the top surface and the bottom surface of the sealing plate 9, and a moving mechanism for driving the sealing plate 9 to move is arranged in the oil cylinder cover 2; a round groove 15 is formed in the oil cylinder cover 2, an electric telescopic rod 14 is fixedly connected in the round groove 15, a round rod 11 is fixedly connected to one side, close to the round groove 15, of the push plate 6, the round rod 11 passes through the oil cylinder cover 2 in a sealing mode and reaches the inside of the round groove 15, a circular ring 12 is fixedly connected to one end, far away from the sealing plate 9, of the round rod 11, and a first spring is fixedly connected between one side, close to the sealing plate 9, of the circular ring 12 and the inner wall of the round groove 15; because the pressure oil is injected into the hydraulic cavity, the pressure value of the pressure oil possibly does not reach, thereby affecting the effect of adjusting the axial force, when the pressure value of the pressure oil is insufficient, the sealing plate 9 can be moved by means of the moving mechanism to enable the round hole 7 to be misplaced with the communicating groove, the sealing plate 9 can seal the round hole 7, then the electric telescopic rod 14 is started, the output end of the electric telescopic rod 14 pushes the round rod 11, at this moment, the round rod 11 can push the push plate 6, the push plate 6 pushes the pressure oil in the hydraulic cavity, the axial thrust of the pressure oil to the driving shaft 5 is increased, the continuous movement of the output end is stopped until the axial force of the driving shaft 5 is balanced, thereby achieving the effect of adjusting the pressure value of the pressure oil in the hydraulic cavity, and further improving the effect of balancing the axial force of the driving shaft 5.
After long periods of use of the pressurized oil, the additives and components in the oil delaminate after long periods of rest, the heavier components settle to the bottom and the lighter components float to the top. This bottoming phenomenon may cause the density of the oil to vary in the vertical direction, thereby affecting the use effect of the pressurized oil. At this time, the sealing plate 9 can be moved up and down by means of the moving mechanism, but the round hole 7 is not aligned with the communicating groove in the moving process of the sealing plate 9, when the sealing plate 9 moves up and down, the outlet hole 37 can continuously suck pressure oil into the cavity 8 and continuously discharge the pressure oil from the cavity 8, the pressure oil in the hydraulic cavity can be mixed in the process, the pressure oil is prevented from layering, and the using effect of the pressure oil is improved.
The moving mechanism comprises a moving groove 17 which is arranged in the push plate 6 and communicated with the cavity 8, a push rod 18 is connected in the moving groove 17 in a sealing sliding manner, the top surface of the push rod 18 is fixedly connected with a sealing plate 9, a second spring is fixedly connected between the bottom surface of the push rod 18 and the inner wall of the moving groove 17, one side of the circular ring 12, which is far away from the circular rod 11, is fixedly connected with a hollow elastic block 13, connecting grooves 16 which are mutually communicated are arranged in the circular rod 11 and the push plate 6, the connecting grooves 16 in the sealing plate 9 are communicated with the moving groove 17, and the connecting grooves 16 in the circular rod 11 are communicated with the inside of the elastic block 13; when the output end of the electric telescopic rod 14 moves, the elastic block 13 is pushed firstly, then gas in the elastic block 13 can enter the moving groove 17 from the connecting groove 16, so that the gas pushes the ejector rod 18, the ejector rod 18 can drive the sealing plate 9 to not seal the round hole 7 any more, the output end can push the push plate 6 after continuing to move, the pressure oil value in the hydraulic cavity can be regulated, and when the sealing plate 9 is required to move up and down, the output end only needs to move back and forth, the elastic block 13 is repeatedly extruded, the effect of automatic movement of the sealing plate 9 is achieved through the mechanism, and other power sources are not required.
A guide rod 19 is fixedly connected to one side of the push plate 6 away from the oil outlet, an oil duct 21 is formed in the guide rod 19, a plurality of groups of oil holes 20 communicated with the oil duct 21 are formed in the side walls of the top surface and the bottom surface of the guide rod 19, and the oil duct 21 is communicated with the outlet hole 37; when the cavity 8 sucks pressure oil, the plurality of groups of oil holes 20 can suck pressure oil in a larger range, and when the pressure oil in the cavity 8 is discharged, the oil can be discharged by the aid of the oil holes 20, and at the moment, the discharged oil can be mixed with the pressure oil in the larger range, so that the efficiency of solving the pressure oil layering is improved.
A pair of sliding blocks 25 made of magnetic materials are connected to one side, close to the guide rod 19, of the push plate 6 in a sliding manner, the sliding blocks 25 and the sealing plate 9 are magnetically attracted, the sliding blocks 25 are fixedly connected with a connecting plate 24 through a bracket, and a group of sealing rods 23 for sealing the oil holes 20 are fixedly connected to the connecting plate 24; when the sealing plate 9 moves up and down, the sealing plate 9 drives the sliding block 25 to move, at this time, the lower connecting plate 24 drives the sealing rod 23 to move up, at the same time, the upper sealing rod 23 is in the process of being pulled out from the oil hole 20, in this process, the lower oil hole 20 sucks the lowest pressure oil, the pressure oil on the sealing plate 9 is extruded into the oil channel 21 to be mixed with the lower pressure oil, when the lower sealing rod 23 enters into the oil hole 20, the upper sealing rod 23 is separated from the oil hole 20, at this time, most of the oil channel 21 is the pressure oil on the lower side, at this time, the sealing plate 9 continues to move up, then the upper pressure oil enters into the oil channel 21 from the oil hole 20 to be mixed with the pressure oil in the sealing plate, at this time, the pressure oil (most of the sucked lowest pressure oil) in the lower cavity 8 is extruded, at this time, the pressure oil only passes through the oil channel 21, and then is discharged from the uppermost oil hole 20, so that the pressure of the lowest pressure oil is mixed with the pressure oil on the upper cavity is greatly improved, and the mixing effect of the pressure oil is not improved.
An arc-shaped plectrum 22 is twisted in the oil duct 21 through a torsion spring; when the pressure oil flows from the oil passage 21, the paddle 22 swings along the flowing direction to mix the pressure oil, further promoting the mixing effect of the pressure oil in the oil passage 21.
The oil cylinder cover 2 is internally provided with a chute 27 communicated with the circular groove 15, the inner wall of the chute 27 is slidably connected with a moving block 28, the bottom surface of the moving block 28 is provided with a clamping groove, the inner wall of the chute 27 is slidably connected with a magnetic plate 31, a group of limiting plates 32 are fixedly connected onto the magnetic plate 31, a third spring is fixedly connected between the bottom surface of the magnetic plate 31 and the chute 27, the top surface of the moving block 28 is fixedly connected with an extrusion ring 26, the surface of the output end of the electric telescopic rod 14 is fixedly connected with a pair of push blocks 30, the inside of the moving block 28 is slidably connected with a driving rod 29 magnetically attracted with the magnetic plate 31, and the top end of the driving rod 29 is fixedly connected with the push blocks 30; when the pressure oil is layered and needs to be mixed, the output end of the electric telescopic rod 14 needs to be moved back and forth to squeeze the elastic block 13, but the push plate 6 loses the output end thrust for a period of time in the process, so that the pressure value of the pressure oil can be influenced, the balance effect of the axial force of the driving shaft 5 is further influenced, when the push plate 6 is provided with thrust by the output end through the mechanism, the output end can drive the push block 30 to push the squeezing ring 26, the squeezing ring 26 pushes the circular ring 12, at the moment, the circular ring 12 can provide thrust for the push plate 6, meanwhile, the driving rod 29 can be positioned above the magnetic plate 31, at the moment, the magnetic plate 31 can be magnetically attracted with the driving rod 29, so that the inserting sheet enters the clamping groove of the moving block 28 to be clamped, the position of the squeezing ring 26 is not changed to always provide thrust for the push plate 6, at the moment, the electric telescopic rod 14 can be closed, the push plate 6 is not required to be always opened, so that the effect of saving energy is achieved, when the elastic block 13 needs to be repeatedly squeezed, the output end can be driven to move back the squeezing the elastic block 13, the process driving rod 29 is always positioned above the magnetic plate 31, the magnetic plate 31 needs to be separated from the clamping groove 31, and the magnetic plate 31 needs to be moved away from the magnetic plate 31 from the magnetic plate 32, and then only needs to be moved from the magnetic plate 32.
A gap is formed between the limiting pieces 32, the gap is larger than the distance between the inner side wall of the clamping groove and the outer wall of the moving block 28, and the top surface of the limiting piece 32 is arc-shaped; because the adjustment of the pressure oil pressure value is uncertain, the possible moving position of the push plate 6 is also uncertain, at this time, with the help of a set of spacing pieces 32 with gaps, after the push plate 6 moves to a proper position, the spacing pieces 32 can be clamped with the clamping grooves, at this time, the spacing pieces 32 close to the moving block 28 can be stirred by the side wall of the moving block 28, and the situation of propping under the moving block 28 can not occur, thereby improving the effect of spacing the push plate 6.
Embodiment two: as shown in fig. 7, in comparative example one, another embodiment of the present invention is: a groove 33 is formed in one side, away from the oil inlet 3, of the push plate 6, and a pressure sensor 34 is fixedly arranged in the groove 33; the pressure sensor 34 senses the pressure value of the pressure oil in the hydraulic cavity, the pressure value is used for calculating the proper pressure value to be applied to the axial force adjustment, then the pushing plate 6 pushes the pressure oil until the pressure sensor 34 senses that the pressure value meets the requirement, the pushing plate 6 stops pushing, and the pressure oil pressure value in the hydraulic cavity can be accurately known through the mechanism, so that the subsequent adjustment of the pressure oil pressure value is facilitated.
An elastic protective sleeve 35 which is arranged on the groove 33 is fixedly connected to the push plate 6, and a buffer spring 36 is fixedly connected between the protective sleeve 35 and the pressure sensor 34; the pressure sensor 34 can be protected by the protective sleeve 35, so that the pressure sensor 34 is prevented from being damaged by pressure oil, the pressure protective sleeve 35 can be extruded and deformed by the pressure oil, and the buffer spring 36 can press the pressure sensor 34 to provide a pressure value for the pressure sensor 34.
Working principle: injecting pressure oil (screw air compressor oil) into a hydraulic cavity through an oil inlet 3 formed in an oil cylinder cover 2, wherein the pressure in the hydraulic cavity generates axial thrust on the end surfaces of an oil cylinder sleeve 10 and a driving shaft 5, the oil cylinder sleeve 10 performs axial thrust on the driving shaft 5, and overcomes the axial force of the driving shaft 5, namely balances the axial force of the driving shaft 5, so that the influence of the driving shaft 5 caused by the increase of exhaust pressure is reduced, the service life of the driving shaft 5 is prolonged, and the equipment failure rate is reduced;
Because the pressure value of the pressure oil possibly does not reach after the pressure oil is injected into the hydraulic cavity, the axial force adjusting effect is affected, when the pressure value of the pressure oil is insufficient, the sealing plate 9 can be moved by the moving mechanism to enable the round hole 7 to be misplaced with the communicating groove, the sealing plate 9 can seal the round hole 7, then the electric telescopic rod 14 is started to enable the output end of the electric telescopic rod 14 to push the round rod 11, at the moment, the round rod 11 can push the push plate 6, the push plate 6 pushes the pressure oil in the hydraulic cavity, the axial thrust of the pressure oil on the driving shaft 5 is increased, the continuous movement of the output end is stopped after the axial force of the driving shaft 5 is balanced, the effect of adjusting the pressure value of the pressure oil in the hydraulic cavity is achieved, and the effect of balancing the axial force of the driving shaft 5 is improved;
after long periods of use of the pressurized oil, the additives and components in the oil delaminate after long periods of rest, the heavier components settle to the bottom and the lighter components float to the top. This bottoming phenomenon may cause the density of the oil to vary in the vertical direction, thereby affecting the use effect of the pressurized oil. At this time, the sealing plate 9 can be moved up and down by means of the moving mechanism, but the round hole 7 is not aligned with the communicating groove in the moving process of the sealing plate 9, when the sealing plate 9 moves up and down, the outlet hole 37 can continuously suck pressure oil into the cavity 8 and continuously discharge the pressure oil from the cavity 8, the pressure oil in the hydraulic cavity can be mixed in the process, the pressure oil is prevented from layering, and the using effect of the pressure oil is improved;
When the output end of the electric telescopic rod 14 moves, the elastic block 13 is pushed firstly, then the gas in the elastic block 13 can enter the moving groove 17 from the connecting groove 16, so that the gas pushes the ejector rod 18, the ejector rod 18 can drive the sealing plate 9 to seal the round hole 7 no longer, the push plate 6 can be pushed after the output end continues to move, the pressure oil value in the hydraulic cavity is regulated, and when the sealing plate 9 is required to move up and down, the output end only needs to move back and forth, the elastic block 13 is repeatedly extruded, the effect of automatic movement of the sealing plate 9 is achieved through the mechanism, and other power sources are not required; when the cavity 8 sucks pressure oil, a plurality of groups of oil holes 20 can suck pressure oil in a larger range, and when the pressure oil in the cavity 8 is discharged, the oil can be discharged by the aid of the oil holes 20, and the discharged oil can be mixed with the pressure oil in the larger range, so that the efficiency of solving the layering of the pressure oil is improved;
When the sealing plate 9 moves up and down, the sealing plate 9 drives the sliding block 25 to move, at this time, the lower connecting plate 24 drives the sealing rod 23 to move up, and the upper sealing rod 23 is in the process of being pulled out from the oil hole 20, in this process, the lower oil hole 20 sucks the lowest pressure oil, the pressure oil on the sealing plate 9 is extruded into the oil channel 21 to be mixed with the lower pressure oil, when the lower sealing rod 23 enters into the oil hole 20, the upper sealing rod 23 is separated from the oil hole 20, at this time, most of the oil channel 21 is the pressure oil positioned below, at this time, the sealing plate 9 continues to move up, then the upper pressure oil enters into the oil channel 21 from the oil hole 20 to be mixed with the pressure oil inside the oil channel, and finally, the sealing plate 9 moves down, at this time, the pressure oil (mostly the sucked lowest pressure oil) in the lower cavity 8 is extruded, because the lower pressure oil is in a sealed state, the pressure oil only passes through the oil channel 21, and then is discharged from the uppermost oil hole 20, so that the pressure oil at the highest pressure is mixed with the pressure oil at the highest, the mixing effect is improved, and the mixing effect of the pressure oil and the upper pressure is not improved; when the pressure oil flows from the oil duct 21, the stirring piece 22 swings along the flowing direction to mix the pressure oil, so as to further promote the mixing effect of the pressure oil in the oil duct 21;
When pressure oil is layered and needs to be mixed, the output end of the electric telescopic rod 14 needs to move back and forth to squeeze the elastic block 13, but in the process, the push plate 6 loses the thrust of the output end for a period of time, so that the pressure value of the pressure oil is influenced, and the balance effect of the axial force of the driving shaft 5 is influenced, when the output end provides thrust for the push plate 6 through the mechanism, the output end drives the push block 30 to push the extrusion ring 26, so that the extrusion ring 26 pushes the circular ring 12, at the moment, the circular ring 12 can provide thrust for the push plate 6, meanwhile, the driving rod 29 is positioned above the magnetic plate 31, at the moment, the magnetic plate 31 can magnetically attract the driving rod 29, so that the inserting sheet enters the clamping groove of the moving block 28 to be clamped, the position of the extrusion ring 26 is not changed to always provide thrust for the push plate 6, at the moment, the electric telescopic rod 14 can be closed without opening to push plate 6 all the time, so that the effect of saving energy is achieved, and when the elastic block 13 needs to be repeatedly extruded, the output end can be driven to move back and squeeze the elastic block 13, the process, the driving rod 29 is always positioned above the magnetic plate 31, and the magnetic plate 31 needs to be separated from the clamping groove 31, and the magnetic plate 31 needs to be moved from the magnetic plate 31 to be separated from the clamping groove 32, and then only needs to be moved from the magnetic plate 32; because the adjustment of the pressure oil pressure value is uncertain, the possible moving position of the push plate 6 is also uncertain, at this time, with the help of a set of spacing pieces 32 with gaps, after the push plate 6 moves to a proper position, the spacing pieces 32 can be clamped with the clamping grooves, at this time, the spacing pieces 32 close to the moving block 28 can be stirred by the side wall of the moving block 28, and the situation of propping under the moving block 28 can not occur, thereby improving the effect of spacing the push plate 6.
The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The screw air compressor with the axial balancing device comprises a screw air compressor body (1), wherein the screw air compressor body (1) is used for compressing air;
The method is characterized in that: the axial balancing mechanism is arranged on the screw air compressor body (1) and is used for balancing axial force; the axial balancing mechanism comprises an oil cylinder cover (2), the oil cylinder cover (2) is arranged on the screw air compressor body (1), and an oil inlet (3) is formed in the oil cylinder cover (2);
The driving shaft (5) is arranged in the screw air compressor body (1), a cylinder sleeve (10) is fixedly connected to the surface, close to the cylinder cover (2), of the driving shaft (5) in a sealing manner, and an O-shaped sealing ring is arranged at the joint of the driving shaft (5) and the cylinder sleeve (10);
The oil cylinder cover (2) is embedded with a sealing copper sleeve (4), the inner ring surface of the oil cylinder sleeve (10) is in sliding fit with the outer round sealing surface of the sealing copper sleeve (4) on the oil cylinder cover (2) to carry out labyrinth seal, and a hydraulic cavity is formed in the space between the oil cylinder sleeve (10) and the oil cylinder cover (2);
the oil cylinder cover is characterized in that a circular push plate (6) is slidably connected to the inner wall of the oil cylinder cover (2), a group of round holes (7) are formed in the center of the push plate (6), a cavity (8) is formed in the push plate (6), a sealing plate (9) is hermetically and slidably connected in the cavity (8), a communicating groove corresponding to the round holes (7) is formed in the sealing plate (9), a pair of outlet holes (37) are formed in one side, away from the oil inlet (3), of the push plate (6), the pair of outlet holes (37) are respectively located on the top surface and the bottom surface of the sealing plate (9), and a moving mechanism for driving the sealing plate (9) to move is arranged in the oil cylinder cover (2); a round groove (15) is formed in the oil cylinder cover (2), an electric telescopic rod (14) is fixedly connected in the round groove (15), a round rod (11) is fixedly connected to one side, close to the round groove (15), of the push plate (6), the round rod (11) passes through the oil cylinder cover (2) in a sealing mode to reach the inside of the round groove (15), a circular ring (12) is fixedly connected to one end, far away from the sealing plate (9), of the round rod (11), and a first spring is fixedly connected between one side, close to the sealing plate (9), of the circular ring (12) and the inner wall of the round groove (15);
The utility model provides a movable mechanism, including seting up in push pedal (6) with removal groove (17) of cavity (8) intercommunication, sealed sliding connection has ejector pin (18) in removal groove (17), the top surface and the closing plate (9) fixed connection of ejector pin (18), fixedly connected with second spring between the bottom surface of ejector pin (18) and the inner wall of removal groove (17), one side fixedly connected with hollow elastic block (13) of round bar (11) are kept away from to ring (12), connecting groove (16) of intercommunication have been seting up in round bar (11) and push pedal (6), connecting groove (16) and removal groove (17) intercommunication in closing plate (9), connecting groove (16) and elastic block (13) inside intercommunication in round bar (11).
2. The screw air compressor with axial balancing device of claim 1, wherein: one side of the push plate (6) far away from the oil inlet (3) is fixedly connected with a guide rod (19), an oil duct (21) is formed in the guide rod (19), a plurality of groups of oil holes (20) communicated with the oil duct (21) are formed in the side walls of the top surface and the bottom surface of the guide rod (19), and the oil duct (21) is communicated with an outlet (37).
3. A screw air compressor with axial balancing device according to claim 2, characterized in that: one side of the push plate (6) close to the guide rod (19) is slidably connected with a pair of sliding blocks (25) made of magnetic materials, the sliding blocks (25) are magnetically attracted with the sealing plate (9), the sliding blocks (25) are fixedly connected with a connecting plate (24) through a support, and a group of sealing rods (23) for sealing the oil holes (20) are fixedly connected to the connecting plate (24).
4. A screw air compressor having an axial balancing device according to claim 3, wherein: the interior of the oil duct (21) is provided with a torsion spring in a twisting way and is provided with an arc-shaped plectrum (22).
5. The screw air compressor with axial balancing device of claim 4, wherein: the oil cylinder cover (2) is internally provided with a chute (27) communicated with the circular groove (15), the inner wall of the chute (27) is slidably connected with a movable block (28), the bottom surface of the movable block (28) is provided with a clamping groove, the inner wall of the chute (27) is slidably connected with a magnetic plate (31), a group of limiting plates (32) are fixedly connected to the magnetic plate (31), a third spring is fixedly connected between the bottom surface of the magnetic plate (31) and the chute (27), the top surface of the movable block (28) is fixedly connected with an extrusion ring (26), the output end surface of the electric telescopic rod (14) is fixedly connected with a pair of push blocks (30), the inner sliding connection of the movable block (28) is provided with a driving rod (29) magnetically attracted with the magnetic plate (31), and the top end of the driving rod (29) is fixedly connected with the push blocks (30).
6. The screw air compressor with axial balancing device of claim 5, wherein: the spacing piece (32) has the space between, and the space is greater than the distance between draw-in groove inside wall and the movable block (28) outer wall, the top surface of spacing piece (32) is the arc.
7. The screw air compressor with axial balancing device of claim 6, wherein: a groove (33) is formed in one side, far away from the oil inlet (3), of the push plate (6), and a pressure sensor (34) is fixedly arranged in the groove (33).
8. The screw air compressor with axial balancing device of claim 7, wherein: the push plate (6) is fixedly connected with an elastic protective sleeve (35) which is arranged on the groove (33), and a buffer spring (36) is fixedly connected between the protective sleeve (35) and the pressure sensor (34).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410557646.3A CN118128756B (en) | 2024-05-08 | 2024-05-08 | Screw air compressor with axial balancing device |
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| CN202410557646.3A CN118128756B (en) | 2024-05-08 | 2024-05-08 | Screw air compressor with axial balancing device |
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| CN118128756B true CN118128756B (en) | 2024-07-02 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100524A (en) * | 2014-07-31 | 2014-10-15 | 山东省章丘鼓风机股份有限公司 | Roots blower with combined sealing structure |
| CN109915214A (en) * | 2019-03-31 | 2019-06-21 | 丹东隆强科技有限责任公司 | Steam-water helical screw power machine with axial thrust balancing devices |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1480333A (en) * | 1973-07-05 | 1977-07-20 | Svenska Rotor Maskiner Ab | Screw rotor machines |
| SE501893C2 (en) * | 1993-10-14 | 1995-06-12 | Svenska Rotor Maskiner Ab | Screw compressor with variable axial balancing means |
| DE102006047891A1 (en) * | 2006-10-10 | 2008-04-17 | Grasso Gmbh Refrigeration Technology | Oil-immersed screw compressor with axial force relief device |
| CN115750361A (en) * | 2022-10-27 | 2023-03-07 | 江苏艾传机械有限公司 | Axial pressure balancing device |
-
2024
- 2024-05-08 CN CN202410557646.3A patent/CN118128756B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100524A (en) * | 2014-07-31 | 2014-10-15 | 山东省章丘鼓风机股份有限公司 | Roots blower with combined sealing structure |
| CN109915214A (en) * | 2019-03-31 | 2019-06-21 | 丹东隆强科技有限责任公司 | Steam-water helical screw power machine with axial thrust balancing devices |
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