Multi-stage filtering device for air compressor

Abstract

The invention discloses a multistage filtering device for an air compressor, and particularly relates to the technical field of air compressors, the multistage filtering device comprises a motor, the output end of the motor is in transmission connection with an air compressor body, and the lower end of the air compressor body is provided with a storage tank; a filter barrel capable of filtering air is arranged on one side of the air compressor body, and the upper portion and the lower portion of the filter barrel filter the air before compression and the air after compression respectively. The links of air suction, filtering and compression are seamlessly connected, when the adjusting assembly drives the filtering assembly on the lower portion of the filtering barrel to rotate in an accumulated force mode, a closed loop of upper plate dust shaking, lower plate bearing and lower plate dust discharging is achieved through matched graded release between the rebound assembly and the limiting assembly, the maintenance downtime is greatly shortened, and the maintenance efficiency is improved. And meanwhile, the water removal assembly at the upper part of the filtering barrel is used for scraping water drops thrown out of the wall surface by the compressed air, so that the efficiency and the comprehensive practicability of the device are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air compressors, in particular to a multi-stage filtering device for air compressors. BACKGROUND

[0002] As a key equipment for providing power source in industrial production, the quality of compressed air output by air compressors directly affects the operation stability and service life of downstream pneumatic equipment. Dust and other impurities in the air are likely to cause component wear, pipeline blockage or corrosion if they enter the equipment with compressed air, so the intake and exhaust need to be purified by filtering devices.

[0003] However, the prior art has obvious limitations. First, it does not design targeted filtering according to the differences in impurity characteristics of uncompressed and compressed air, which easily leads to uneven burden on the filter screen and shortens the service life. Second, the self-cleaning mechanism is missing or inefficient, and the filter screen needs to be manually disassembled and washed after dust accumulation, which affects the continuity of production due to frequent shutdowns.

[0004] Chinese Patent No. CN221244387U discloses a filtering device for an air compressor, which includes a mounting cylinder and a clamping structure mounted on the mounting cylinder. The device is clamped on the air inlet of the air compressor through the clamping structure. A filtering assembly is installed in the mounting cylinder and filters the air when the device absorbs air. The filtering device for the air compressor rotates two rotating rings on two mounting rods to drive two arc-shaped plates apart. After clamping the air inlet of the air compressor through the two arc-shaped plates, the two arc-shaped plates can clamp the air inlet through multiple connecting springs. The medium-efficiency filter screen and the high-efficiency filter screen filter larger dust and smaller dust, respectively. The device is easy to adjust and suitable for installation on air compressors of different sizes.

[0005] However, the above-mentioned device cannot automatically clean the two filter plates alternately during use, and the working continuity is low. SUMMARY

[0006] The main purpose of the present application is to provide a multi-stage filtering device for air compressors, which can effectively solve the problems in the background art.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0008] The utility model provides a kind of multistage filtering device for air compressor, including motor, the output end of the motor is drivingly connected with air compressor body, the lower end of the air compressor body is equipped with storage tank, the side of the air compressor body is provided with the filtering barrel that can filter air, the upper portion and the lower portion of the filtering barrel filter air before compression and after compression respectively, the side of the filtering barrel close to air compressor body is fixedly connected with inlet valve and exhaust valve, the lower portion the filtering barrel is connected with the air inlet of air compressor body by inlet valve, the upper portion the filtering barrel is connected with the air outlet of air compressor body by exhaust valve, the inside of the filtering barrel is provided with adjusting assembly, the lower portion of the filtering barrel inner chamber is provided with the filtering assembly of double-layer filtering function to air before compression, the upper side of the filtering assembly is provided with rebound assembly, the lower side of the filtering assembly is provided with limiting assembly, the lower end of the filtering barrel is provided with collection assembly, the upper end of the filtering barrel is provided with the water removal assembly that filters air after compression.

[0009] Preferably, the adjusting assembly includes a rotating shaft drivingly connected to the output end of the motor, the outer surface of the rotating shaft is fixedly connected with two front and rear distributed rotating seats, the lower end of the rear rotating seat is rotatably connected with a lifting seat one, the rear rotating seat drives the lifting seat one to slide up and down on the inner wall of the filtering barrel during rotation, the lower end of the lifting seat one is fixedly connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with a limiting block, and the lower end of the rotating shaft is fixedly connected with a rotating cylinder.

[0010] Preferably, the outer surface of the rotating cylinder is provided with a spiral groove, a straight groove and an annular groove one, the spiral groove surrounds the outer surface of the rotating cylinder for one turn, the upper end starting point and the lower end terminal point of the spiral groove are connected in communication through the straight groove, the annular groove one is located on the upper side of the rotating cylinder and is connected in communication with the upper end of the straight groove, the connection between the straight groove and the upper end starting point of the spiral groove is rotatably connected with a rotating baffle one, the length of the rotating baffle one is greater than the width of the straight groove, the connection between the lower end of the straight groove and the lower end terminal point of the spiral groove is rotatably connected with a rotating baffle two, the length of the rotating baffle two is greater than the width of the spiral groove, the bottom inner wall of the filtering barrel is fixedly connected with an elastic telescopic rod, the upper end of the elastic telescopic rod is fixedly connected with a fixed block, the upper end of the fixed block is fixedly connected with a guide rod one, and the front end of the guide rod one is slidably connected with the spiral groove, the straight groove and the annular groove one respectively.

[0011] Preferably, the filtering assembly includes a filter plate one and a filter plate two, the outer surface of the filter plate one is rotatably connected with the filtering barrel, the outer surface of the rotating shaft is slidably connected with the filter plate one, the filter plate two is provided with a through hole at the middle position, and the filter plate two is conical as a whole.

[0012] Preferably, the collecting assembly comprises an annular collecting box fixedly connected with the lower side of the inner surface of the filter bucket, an upper end of the middle position of the annular collecting box is fixedly connected with a guide plate, an upper end of the middle position of the annular collecting box is fixedly connected with a support seat for conveniently supporting the second filter plate, an annular groove two is formed in the upper end of the support seat, a plurality of rolling balls are arranged around the lower end of the second filter plate, and the outer surfaces of the rolling balls are jointly and movably connected with the annular groove two.

[0013] Preferably, the rebound assembly comprises two fixed frames fixedly connected with the inner surface of the filter bucket, one end of each of the two fixed frames is jointly and fixedly connected with a first fixed seat, the inner surface of the first fixed seat is fixedly connected with a first torsion spring, one end of the first torsion spring away from the first fixed seat is fixedly connected with a clamping block, the outer surface of the rotating shaft is provided with a first clamping groove, the clamping block is clamped in the first clamping groove, and the rotating shaft drives the first clamping groove to pull the clamping block to store power in the original position in the process of rotating and lifting, the upper end of the second filter plate is fixedly connected with a second fixed seat, the inner surface of the second fixed seat is fixedly connected with a second torsion spring, one end of the second torsion spring away from the second fixed seat is fixedly connected with the upper end of the second filter plate, the through hole in the middle position of the second filter plate is fixedly connected with a pushing block, and when the rotating shaft rotates clockwise, the limiting block pushes the pushing block, so that the second filter plate rotates together.

[0014] Preferably, the limiting assembly comprises a limiting rod fixedly connected with the inner wall of the filter bucket, a sliding block is movably connected with the outer surface of the limiting rod, a wedge-shaped block is fixedly connected with the front end of the sliding block, a wedge-shaped groove matched with the wedge-shaped block is formed in the outer surface of the second filter plate, and the inclined surface of the wedge-shaped groove is larger than the inclined surface of the wedge-shaped block, a guide rod two is fixedly connected with the lower end of the second filter plate on one side of the wedge-shaped block, a sliding groove is formed in the outer surface of the rotating shaft, a fixed rod is fixedly connected with the inner surface of the sliding groove, a sliding seat is movably connected with the outer surface of the fixed rod, a limiting clamping seat is fixedly connected with one end of the sliding seat close to the filter bucket, a second clamping groove matched with the limiting clamping seat is formed in the inner surface of the filter bucket, the second clamping groove can limit the sliding seat as a whole, and a guide rod three is fixedly connected with the lower end of the sliding seat.

[0015] Preferably, a guide groove one is formed in the upper end of the sliding block, a guide groove two is formed in the lower end of the sliding block, when the guide rod two rotates clockwise with the second filter plate and passes through the guide groove two, the wedge-shaped block is pushed to insert into the inner surface of the wedge-shaped groove to limit the second filter plate, after the guide rod three rotates clockwise with the rotating shaft for one circle, the guide rod three rebounds reversely, and when the guide rod three passes through the guide groove one, the wedge-shaped block is pushed to move away from the inner surface of the wedge-shaped groove as a whole, so that the second filter plate loses the limitation and rebounds, a guide groove three matched with the rotating track of the guide rod two is formed in the lower end of the sliding block, a rotating baffle three is rotatably connected at the connection position of the guide groove two and the guide groove three, and the length of the rotating baffle three is greater than the width of the guide groove three.

[0016] Preferably, the water removal assembly comprises a lifting seat two rotationally connected with the front rotating seat, the front rotating seat drives the lifting seat two to slide up and down on the inner surface of the filter barrel when rotating, the upper side of the inner surface of the filter barrel is fixedly connected with a water collecting box, the upper end of the water collecting box is rotationally connected with a rotating annular seat, the lower side of the rotating annular seat is concave upward, liquid drops along the arc edge thereof to the surface of the water collecting box, the middle position of the rotating annular seat is fixedly connected with a connecting rod, and the lower end of the connecting rod is fixedly connected with a fixed plate;

[0017] One side of the upper end of the lifting seat two is rotationally connected with a connecting shaft, the lifting seat two and the rotating annular seat are connected through the connecting shaft, and the upper end of the connecting shaft is located at one side of the fixed plate, the lifting seat two drives the fixed plate to reciprocating rotate when lifting, and the rotating angle of each time is less than one hundred and eighty degrees, and the upper end of the rotating annular seat is symmetrically provided with two scrapers, and the outer surfaces of the two scrapers are jointly attached to the inner surface of the filter barrel.

[0018] Preferably, the upper side of the inner surface of the filter barrel is fixedly connected with a fixed seat three, and the upper end of the fixed seat three is provided with an impeller.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] 1. The present application synchronously filters the air before and after compression through the cooperation of various components, the internal movement of the filter barrel is reversely linked with the piston of the air compressor body, and the links of "air suction - filtration - compression" are seamlessly connected, when the adjusting assembly drives the filter assembly at the lower part of the filter barrel to accumulate force and rotate, the cooperation between the rebound assembly and the limiting assembly is used for staged release, realizing the closed loop of "upper plate dust shock - lower plate receiving - lower plate dust removal", greatly reducing the maintenance downtime, ensuring the long-term stability of the filtration efficiency, and at the same time, the upper water removal assembly of the filter barrel scrapes off the water droplets on the wall surface, forming a double protection of "active separation + passive removal", and the overall realizes the multifunctional cooperation of "filtration - self-cleaning - water removal", improving the efficiency and comprehensive practicability of the device.

[0021] 2. The present application drives the filter plate one and the filter plate two to accumulate force while filtering the air before compression through the cooperation of the adjusting assembly and the filter assembly, and makes the two release in stages through the cooperation of the rebound assembly, the upper filter plate one rebounds and shakes off impurities first, and then the lower filter plate two rebounds to generate strong centrifugal force to throw out the impurities intercepted by itself and the impurities on the upper filter plate one received, which not only ensures the cleanliness of the filter screen surface, but also realizes the centralized treatment of impurities through the structural characteristics, without manual disassembly and cleaning, and the lifting of the adjusting assembly synchronously drives the upper scraper to scrape off the water droplets on the inner wall of the filter barrel, effectively reducing the water content in the compressed air, and improving the overall working efficiency and air quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall internal structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the filter barrel of the present invention;

[0025] Figure 4 This is a partial structural schematic diagram of the adjustment component of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the springback assembly of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the adjustment component of the present invention;

[0028] Figure 7 This is a schematic diagram of the rotating cylinder of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the collection component of the present invention;

[0030] Figure 9 This is a schematic diagram of the structure of the limiting component of the present invention. Figure 1 ;

[0031] Figure 10 This is a schematic diagram of the structure of the limiting component of the present invention. Figure 2 ;

[0032] Figure 11 This is a schematic diagram of the structure of the limiting component of the present invention. Figure 3 ;

[0033] Figure 12 This is a schematic diagram of the structure of the limiting component of the present invention. Figure 4 ;

[0034] Figure 13 This is a schematic diagram of the water removal component of the present invention;

[0035] Figure 14 This is an exploded structural diagram of the water removal component of the present invention.

[0036] In the diagram: 1. Motor; 11. Air compressor body; 12. Storage tank; 13. Filter barrel; 14. Inlet valve; 15. Exhaust valve; 2. Adjustment assembly; 21. Rotating shaft; 22. Rotating seat; 23. Lifting seat one; 24. Rotating shaft; 241. Limit block; 25. Rotating cylinder; 251. Spiral groove; 252. Straight groove; 253. Annular groove one; 254. Rotating baffle one; 255. Rotating baffle two; 26. Elastic telescopic rod; 261. Fixing block; 27. Guide rod one; 3. Filter assembly; 31. Filter plate one; 32. Filter plate two; 4. Rebound assembly; 41. Fixing frame; 42. Fixing seat one; 43. Torsion spring one; 44. Locking block; 45. Locking groove one; 46. Fixing seat two; 47. Torsion spring two; 48. 5. Pushing block; 5. Limiting assembly; 51. Limiting rod; 52. Sliding block; 521. Guide groove one; 522. Guide groove two; 523. Guide groove three; 524. Rotating baffle three; 53. Wedge block; 54. Wedge groove; 55. Guide rod two; 56. Sliding groove; 57. Fixed rod; 58. Sliding seat; 581. Limiting card seat; 582. Card groove two; 59. Guide rod three; 6. Collection assembly; 61. Annular collection box; 611. Guide plate; 62. Support seat; 621. Annular groove two; 63. Ball bearing; 7. Water removal assembly; 71. Lifting seat two; 72. Water collection box; 73. Rotating annular seat; 74. Connecting rod; 75. Fixed plate; 76. Connecting shaft; 77. Scraper; 78. Fixed seat three; 79. Impeller. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] Example 1, as Figures 1-3 As shown, a multi-stage filtration device for an air compressor includes a motor 1, with an air compressor body 11 connected to the output end of the motor 1. A storage tank 12 is installed at the lower end of the air compressor body 11. A filter canister 13 for filtering air is provided on one side of the air compressor body 11. The upper and lower parts of the filter canister 13 filter the air before and after compression, respectively. An intake valve 14 and an exhaust valve 15 are fixedly connected to the side of the filter canister 13 near the air compressor body 11. The lower part of the filter canister 13 is connected to the air compressor body 11. The air inlet of 1 is connected through the air inlet valve 14, and the upper filter barrel 13 is connected to the air outlet of the air compressor body 11 through the exhaust valve 15. The filter barrel 13 is equipped with an adjustment component 2. The lower part of the inner cavity of the filter barrel 13 is equipped with a filter component 3 that performs double-layer filtration of the air before compression. The upper side of the filter component 3 is equipped with a rebound component 4, and the lower side of the filter component 3 is equipped with a limiting component 5. The lower end of the filter barrel 13 is equipped with a collection component 6, and the upper end of the filter barrel 13 is equipped with a water removal component 7 that filters the compressed air.

[0039] The air compressor body 11 is a conventional technology in the prior art, driven by the motor 1, the piston reciprocates in the cylinder, the intake valve 14 is open when inhaling, air enters; the intake valve 14 is closed when compressing, the piston compresses air to increase the pressure, and then the exhaust valve 15 is opened, the compressed air is discharged.

[0040] Referring to Figures 4-6 , the adjusting assembly 2 comprises a rotating shaft 21 in transmission connection with the output end of the motor 1, the outer surface of the rotating shaft 21 is fixedly connected with two front and rear distributed rotating seats 22, the lower end of the rear rotating seat 22 is rotatably connected with a lifting seat one 23, the rear rotating seat 22 drives the lifting seat one 23 to slide up and down on the inner wall of the filter barrel 13 in the rotating process, the lower end of the lifting seat one 23 is fixedly connected with a rotating shaft 24, the outer surface of the rotating shaft 24 is fixedly connected with a limiting block 241, and the lower end of the rotating shaft 24 is fixedly connected with a rotating cylinder 25.

[0041] Further, the limiting block 241 can limit the filter plate one 31, which can drive the filter plate one 31 to rotate, and the rotating shaft 24 itself can also slide up and down;

[0042] The two rotating seats 22 are axially symmetrically distributed, and the two rotating seats 22 are synchronously raised and lowered;

[0043] The contact part between the lifting seat one 23 and the inner wall of the filter barrel 13 is provided with rubber, which is an elastic sealing material, forming a dynamic seal, when the lifting seat one 23 is raised and lowered, the sealing element slides tightly against the inner wall, blocking the gas leakage, when it is raised, the space below forms a negative pressure, and when it is lowered, a high pressure is generated. This is a common dynamic sealing application technology, so it will not be described in detail in this scheme.

[0044] The rotating shaft 21 and the air compressor body 11 operate synchronously, but their initial states are opposite, when the lifting seat one 23 moves upward to produce negative pressure to suck in air, the air compressor body 11 is in a state of high pressure compressed air, when the lifting seat one 23 extrudes air, the air compressor body 11 is in a state of negative pressure to absorb air in the lower part of the filter barrel 13, the two cooperate with each other, the seamless connection of "filtering - inhaling" avoids the stagnation of air in the filter barrel 13, prevents the mixing pollution of unfiltered air and filtered air, and at the same time ensures the stability of the air inlet pressure of the air compressor body 11, reduces the compression efficiency caused by air flow fluctuation.

[0045] Referring to Figure 6 and Figure 7The outer surface of the rotating cylinder 25 is provided with a spiral groove 251, a straight groove 252 and an annular groove 253. The spiral groove 251 surrounds the outer surface of the rotating cylinder 25. The upper end of the spiral groove 251 is connected to the lower end through the straight groove 252. The annular groove 253 is located on the upper side of the rotating cylinder 25 and is connected to the upper end of the straight groove 252. The straight groove 252 is rotatably connected to the upper end of the spiral groove 251 through a rotating baffle 254. The length of the rotating baffle 254 is greater than the width of the straight groove 252. The lower end of the straight groove 252 is rotatably connected to the lower end of the spiral groove 251 through a rotating baffle 255. The length of the rotating baffle 255 is greater than the width of the spiral groove 251. The bottom inner wall of the filter barrel 13 is fixedly connected to an elastic telescopic rod 26. The upper end of the elastic telescopic rod 26 is fixedly connected to a fixed block 261. The upper end of the fixed block 261 is fixedly connected to a guide rod 27. The front end of the guide rod 27 is slidably connected to the spiral groove 251, the straight groove 252 and the annular groove 253.

[0046] As Figure 7 The lower side of the rotating baffle 254 is provided with a spring. The left side of the rotating baffle 255 is provided with a spring. The rotating baffle 254 and the rotating baffle 255 are reset.

[0047] Referring to Figures 4-6 The filter assembly 3 includes a filter plate 31 and a filter plate 32. The outer surface of the filter plate 31 is rotatably connected to the filter barrel 13. The outer surface of the rotating shaft 24 is slidably connected to the filter plate 31. The filter plate 32 is provided with a through hole at the middle position. The filter plate 32 is conical in shape.

[0048] The initial state of the guide rod 27 is located at the connection between the annular groove 253 and the straight groove 252. When the rear rotating seat 22 rotates and drives the lifting seat 23 and the rotating shaft 24 to rise, negative pressure is generated in the lower space. External air enters from the air inlet at the bottom of the filter barrel 13 and passes through the filter plate 31 and the filter plate 32 in turn. The filter plate 32 is mainly responsible for intercepting impurities with large volume in the air, such as sand, insects, hair and obvious dust particles. The filter plate 31 further filters out small suspended matters that are not easy to see with the naked eye, such as pollen, smoke and micron-sized dust, to ensure that the air entering the air compressor body 11 is pure enough to avoid hard particles entering the air compressor body 11, reducing the wear of core components such as pistons and cylinders.

[0049] Referring to Figure 8The collecting assembly 6 comprises an annular collecting box 61 fixedly connected to the lower side of the inner surface of the filtering barrel 13, an upper end of the annular collecting box 61 at the middle position is fixedly connected with a guide plate 611, an upper end of the annular collecting box 61 at the middle position is fixedly connected with a supporting seat 62 for conveniently supporting the second filtering plate 32, an annular groove two 621 is arranged at the upper end of the supporting seat 62, a plurality of ball bearings 63 are arranged around the lower end of the second filtering plate 32, and the outer surfaces of the ball bearings 63 are jointly and rotatably connected with the annular groove two 621.

[0050] Further, the annular collecting box 61 can collect dust particles thrown by the first filtering plate 31 and the second filtering plate 32, the guide plate 611 has a guiding effect, and dust can conveniently pass through the middle position of the annular collecting box 61 and the supporting seat 62 and enter the annular collecting box 61.

[0051] Referring to Figure 5 The rebound assembly 4 comprises two fixed frames 41 fixedly connected to the inner surface of the filtering barrel 13, one end of the two fixed frames 41 close to each other is jointly fixedly connected with a fixed seat one 42, the inner surface of the fixed seat one 42 is fixedly connected with a torsion spring one 43, one end, away from the fixed seat one 42, of the torsion spring one 43 is fixedly connected with a clamping block 44, the outer surface of the rotating shaft 24 is provided with a clamping groove one 45, the clamping block 44 is clamped in the clamping groove one 45, and the rotating shaft 24 drives the clamping groove one 45 to pull the clamping block 44 to store power at the original position in the process of rotating and lifting. The upper end of the second filtering plate 32 is fixedly connected with a fixed seat two 46, the inner surface of the fixed seat two 46 is fixedly connected with a torsion spring two 47, one end, away from the fixed seat two 46, of the torsion spring two 47 is fixedly connected with the upper end of the second filtering plate 32, the inner surface of the through hole at the middle position of the second filtering plate 32 is fixedly connected with a pushing block 48, and the rotating shaft 24 rotates clockwise to drive the limiting block 241 to push the pushing block 48, so as to drive the second filtering plate 32 to rotate together.

[0052] Further, the limiting block 241 is in close contact with 481 when rotating clockwise, and the second filtering plate 32 is pushed to rotate clockwise together through the pushing block 48.

[0053] Since the guide rod one 27 always remains stationary, when the rotating shaft 24 rises, the guide rod one 27 slides downward, under the guiding effect of the rotating baffle one 254, the guide rod one 27 enters the spiral groove 251, thereby driving the rotating cylinder 25 and the rotating shaft 24 to rotate clockwise by one circle as a whole, and further driving the first filtering plate 31 and the second filtering plate 32 to rotate synchronously by one circle, so that the torsion spring one 43 and the torsion spring two 47 are both in the state of storing power and tightening. At this time, the guide rod one 27 moves to the lower end of the straight groove 252, and when the rear rotating seat 22 drives the lifting seat one 23 and the rotating shaft 24 to descend in rotation, high pressure is generated in the lower space, and the filtered air quickly enters the inside of the air compressor body 11 from the air inlet valve 14 for compression.

[0054] When the rotating shaft 24 is lowered, the guide rod one 27 will enter the straight groove 252 along the guide straight line of the rotating baffle two 255, when the rotating shaft 24 is about to be lowered to the bottom end, the guide rod one 27 will push away the rotating baffle one 254, and enter the annular groove one 253, because the annular groove one 253 is annular, the guide rod one 27 is not blocked on the surface of the annular groove one 253, the rotating cylinder 25 loses the limit, and is driven by the torsional spring one 43 to make the filter plate one 31 rebound instantaneously, and dust on the surface of the filter plate one 31 is shaken off to the surface of the filter plate two 32.

[0055] Wherein, because the rebound of the filter plate one 31 occurs when the rotating cylinder 25 is lowered to the bottom end, but in the instant of reverse rebound of the rotating cylinder 25, he is still in the lifting motion state, so the elastic telescopic rod 26 is arranged at the lower end of the guide rod one 27, which can provide part of the buffer for the guide rod one 27, and avoid the situation that the guide rod one 27 is stuck in the lifting process of the rotating cylinder 25.

[0056] It should be noted that after the rebound of the rotating cylinder 25, the guide rod one 27 will return to the initial state, that is, the connection between the annular groove one 253 and the straight groove 252, waiting for the next rising of the rotating shaft 24.

[0057] Referring to Figures 9-12 The limiting component 5 comprises a limiting rod 51 fixedly connected with the inner wall of the filter barrel 13, the outer surface of the limiting rod 51 is slidably connected with a sliding block 52, the front end of the sliding block 52 is fixedly connected with a wedge-shaped block 53, the outer surface of the filter plate two 32 is provided with a wedge-shaped groove 54 matched with the wedge-shaped block 53, and the inclined surface of the wedge-shaped groove 54 is larger than that of the wedge-shaped block 53, the lower end of the filter plate two 32 and located on one side of the wedge-shaped block 53 is fixedly connected with a guide rod two 55, the outer surface of the rotating shaft 24 is provided with a sliding groove 56, the inner surface of the sliding groove 56 is fixedly connected with a fixed rod 57, the outer surface of the fixed rod 57 is slidably connected with a sliding seat 58, one end of the sliding seat 58 close to the filter barrel 13 is fixedly connected with a limiting clamping seat 581, the inner surface of the filter barrel 13 is provided with a clamping groove two 582 matched with the limiting clamping seat 581, the clamping groove two 582 can limit the whole sliding seat 58, and the lower end of the sliding seat 58 is fixedly connected with a guide rod three 59.

[0058] The upper end of the sliding block 52 is provided with a guide groove one 521, and the lower end of the sliding block 52 is provided with a guide groove two 522. When the guide rod two 55 rotates one circle clockwise along with the filter plate two 32 and passes through the guide groove two 522, the wedge-shaped block 53 is inserted into the inner surface of the wedge-shaped groove 54 to limit the filter plate two 32. When the guide rod three 59 rotates one circle clockwise along with the rotating shaft 24 and then reversely rebounds and passes through the guide groove one 521, the wedge-shaped block 53 is driven to leave the inner surface of the wedge-shaped groove 54 as a whole, so that the filter plate two 32 loses the limitation and rebounds. The lower end of the sliding block 52 is provided with a guide groove three 523 matched with the rotating track of the guide rod two 55. The connecting part of the guide groove two 522 and the guide groove three 523 is rotationally connected with a rotating baffle three 524. The length of the rotating baffle three 524 is greater than the width of the guide groove three 523.

[0059] Further, the side of the rotating baffle three 524 close to the guide groove three 523 is provided with a spring, which facilitates the resetting of the rotating baffle three 524.

[0060] Synchronously, when the rotating shaft 24 rises, the filter plate one 31 and the filter plate two 32 are driven to rotate one circle synchronously. When the filter plate two 32 rotates one circle, the guide rod two 55 at the lower end of the filter plate two 32 rotates one circle synchronously and passes through the guide groove two 522 in the process. Figure 11

[0061] The guide groove two 522 is inclined. When the guide rod two 55 moves in the guide groove one 521, the distance of the wedge-shaped block 53 driven to advance is equal to the depth of the wedge-shaped block 53 inserted into the wedge-shaped groove 54. The guide rod two 55 is inclined to the outside of its rotating track, so that when the guide rod two 55 moves along its rotating track, it enters the guide groove two 522 along the rotating baffle three 524 under the guidance of the rotating baffle three 524. When the guide rod two 55 moves in the guide groove two 522, it drives the wedge-shaped block 53 to be inserted into the wedge-shaped groove 54, so that the right angle edge of the wedge-shaped groove 54 and the right angle edge of the wedge-shaped block 53 abut against each other. In this state, when the rotating shaft 24 drives the filter plate one 31 to reversely rotate and rebound, the filter plate two 32 is kept stationary because of being limited,

[0062] ​Wherein, the wedge-shaped groove 54 is larger than the area of the wedge-shaped block 53, when the guide rod two 55 completely slides through the guide groove two 522, the inclined surface of the wedge-shaped block 53 will just fit the inclined surface of the wedge-shaped groove 54, in this state, the right angle edge of the wedge-shaped groove 54 and the right angle edge of the wedge-shaped block 53 exist a certain distance, until the limiting block 241 reversely rebounds to release the pushing of the pushing block 48, the filter plate two 32 will actively rebound part under the pull of the torsion spring two 47, so that the right angle edge of the wedge-shaped groove 54 and the right angle edge of the wedge-shaped block 53 resist each other, the filter plate two 32 stops rebounding, which avoids the wedge-shaped block 53 from being stuck in the rotating wedge-shaped groove 54 during the movement, and the right angle edge of the wedge-shaped groove 54 opened on the side surface of the filter plate two 32 will exceed the right angle edge of the wedge-shaped block 53 when rotating, so that the wedge-shaped block 53 can be smoothly clamped into the wedge-shaped groove 54.

[0063] It should be noted that, Figure 11 For the initial positions of the guide rod two 55 and the guide rod three 59 when the filter plate one 31 and the filter plate one 31 are not stored, in this state, the guide groove one 521 close to the one end of the guide rod three 59 is tangent to the rotation track of the guide rod three 59, when they rotate synchronously clockwise, the guide rod two 55 does not contact the guide groove two 522, but the guide rod three 59 will pass through the guide groove one 521 to drive the wedge-shaped block 53 as a whole to move forward, when the guide rod three 59 completely separates from the guide groove one 521, the filter plate two 32 is in a state of continuing to rotate clockwise, in this state, the inclined surface of the wedge-shaped groove 54 will push the wedge-shaped block 53 to retreat, the wedge-shaped block 53 cannot clamp the filter plate two 32, until the guide rod two 55 rotates close to a circle to drive the wedge-shaped block 53 into the wedge-shaped groove 54 through the rotating seat 22, then the filter plate two 32 can be clamped when it rebounds counterclockwise.

[0064] When the rotating cylinder 25 rebounds, it will drive the sliding seat 58 and the guide rod three 59 to rebound together, the guide rod three 59 will pass through the guide groove one 521 when rotating close to a circle, because the wedge-shaped block 53 is in the state of being inserted into the wedge-shaped groove 54, in this state, the other end of the guide groove one 521 is tangent to the rotation track of the guide rod three 59, so when the guide rod three 59 rebounds fast, it will enter the guide groove one 521, the guide groove one 521 is also inclined, when the guide rod three 59 moves reversely in the guide groove one 521, it will push the wedge-shaped block 53 to move completely to the outer surface of the wedge-shaped groove 54, so that the filter plate two 32 loses the limit and rebounds instantly under the pull of the torsion spring two 47, so that the filter plate two 32 shakes off the dust on its surface, the centrifugal force generated by the conical structure of the filter plate two 32 when rebounding is larger, which can shake off the impurities intercepted by itself and the upper filter plate one 31 received together with the impurities to the outside of the annular collecting box 61, realizing complete cleaning, which not only ensures the cleanliness of the surface of the filter screen, but also realizes the centralized treatment of impurities by using the structural characteristics, without manual disassembly and cleaning, greatly reducing the maintenance downtime, especially suitable for continuous production conditions.

[0065] It should be noted that when rebounding, because the wedge-shaped block 53 is in the state of pushing out, the guide rod two 55 will directly enter the guide groove three 523 and slide through, and will not be stuck.

[0066] Wherein the diameter of the filter plate two 32 is smaller than the diameter of the inner wall of the filter barrel 13, under the guidance of the annular collecting box 61, most of the air will pass through the filter plate two 32, and part of the air passing through the gap between the filter plate two 32 and the filter barrel 13 will also pass through the filter plate one 31 for filtering, and no unfiltered situation will occur.

[0067] Referring to Figures 13-14 , the water removal assembly 7 comprises a lifting seat two 71 rotationally connected with the front rotating seat 22, the front rotating seat 22 drives the lifting seat two 71 to slide up and down on the inner surface of the filter barrel 13 when rotating, the upper side of the inner surface of the filter barrel 13 is fixedly connected with a water collecting box 72, the upper end of the water collecting box 72 is rotationally connected with a rotating annular seat 73, the lower side of the rotating annular seat 73 is concave upward, liquid drops along the arc edge thereof to the surface of the water collecting box 72, the middle position of the rotating annular seat 73 is fixedly connected with a connecting rod 74, and the lower end of the connecting rod 74 is fixedly connected with a fixed plate 75.

[0068] One side of the upper end of the lifting seat two 71 is rotationally connected with a connecting shaft 76, the lifting seat two 71 is connected with the rotating annular seat 73 through the connecting shaft 76, and the upper end of the connecting shaft 76 is located at one side of the fixed plate 75, the lifting seat two 71 drives the connecting shaft 76 to pull the fixed plate 75 to reciprocating rotate when lifting, and the rotating angle is less than one hundred and eighty degrees each time, and the upper end of the rotating annular seat 73 is symmetrically provided with two scrapers 77, and the outer surfaces of the two scrapers 77 are jointly attached to the inner surface of the filter barrel 13.

[0069] Further, after the air inside the air compressor body 11 is compressed, the compressed air will enter the upper part of the filter barrel 13 through the exhaust valve 15, in this state, the lifting seat two 71 is driven to descend to make the upper part of the filter barrel 13 have negative pressure, so that the compressed air can smoothly enter the upper part of the filter barrel 13.

[0070] The lifting seat two 71 can also pull the fixed plate 75 to reciprocating rotate through the connecting shaft 76 when lifting, drive the two scrapers 77 to scrape together on the inner wall of the filter barrel 13, and the rotating distance is slightly less than half each time, so as to avoid collision between the scrapers 77 and the fixed seat three 78, the scraped liquid will enter the arc surface of the lower side of the rotating annular seat 73 along the edge of the rotating annular seat 73, and finally drop downward to the surface of the water collecting box 72, so as to prevent water droplets from being mixed into the air again due to air flow disturbance, and also to avoid rust caused by long-term accumulation of water in the inner wall of the filter barrel 13.

[0071] Finally, the air enters the storage tank 12 through the connecting pipe on the upper end of the filter barrel 13.

[0072] The upper side of the inner surface of the filter barrel 13 is fixedly connected with a fixing seat three 78, and the upper end of the fixing seat three 78 is installed with an impeller 79.

[0073] The impeller 79 is a conventional technology in the prior art, and when the impeller 79 rotates, the entering compressed air is dispersed into fine air flow by the centrifugal force, and the water and oil in the air are thrown to the inner wall of the filter barrel under the driving of the centrifugal force and separated from the air, and then the water and oil flow down along the inner wall or are removed by the scraper 77, so that the gas-liquid and gas-oil separation is realized, which is the conventional technology of centrifugal separation.

[0074] It should be particularly pointed out that the specific installation mode of the motor 1 and the air compressor body 11, the connection mode of the circuit and the control method all belong to the conventional design, and the present application will not be described in detail.

[0075] The basic principles and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-stage filtration device for an air compressor, comprising a motor (1), wherein the output end of the motor (1) is connected to an air compressor body (11), and a storage tank (12) is installed at the lower end of the air compressor body (11), characterized in that: A filter barrel (13) is provided on one side of the air compressor body (11). The upper and lower parts of the filter barrel (13) filter the air before and after compression, respectively. An intake valve (14) and an exhaust valve (15) are fixedly connected to the side of the filter barrel (13) near the air compressor body (11). The lower part of the filter barrel (13) is connected to the air inlet of the air compressor body (11) through the intake valve (14). The upper part of the filter barrel (13) is connected to the air outlet of the air compressor body (11) through the exhaust valve (15). An adjustment component (2) is provided inside the filter barrel (13). A filter component (3) is provided in the lower part of the inner cavity of the filter barrel (13). A rebound component (4) is provided on the upper side of the filter component (3). A limiting component (5) is provided on the lower side of the filter component (3). A collection component (6) is provided at the lower end of the filter barrel (13). A water removal component (7) is provided at the upper end of the filter barrel (13).

2. The multi-stage filtration device for an air compressor according to claim 1, characterized in that: The adjustment assembly (2) includes a rotating shaft (21) that is connected to the output end of the motor (1). Two rotating seats (22) are fixedly connected to the outer surface of the rotating shaft (21). A lifting seat (23) is rotatably connected to the lower end of the rear rotating seat (22). During the rotation, the rear rotating seat (22) drives the lifting seat (23) to slide up and down on the inner wall of the filter barrel (13). A rotating shaft (24) is fixedly connected to the lower end of the lifting seat (23). A limit block (241) is fixedly connected to the outer surface of the rotating shaft (24). A rotating cylinder (25) is fixedly connected to the lower end of the rotating shaft (24).

3. The multi-stage filtration device for an air compressor according to claim 2, characterized in that: The outer surface of the rotating cylinder (25) is provided with a spiral groove (251), a straight groove (252), and an annular groove (253). The spiral groove (251) surrounds the outer surface of the rotating cylinder (25). The upper starting point and lower ending point of the spiral groove (251) are connected by the straight groove (252). The annular groove (253) is located on the upper side of the rotating cylinder (25) and is connected to the upper end of the straight groove (252). A rotating baffle (254) is rotatably connected at the connection between the upper starting point of the straight groove (252) and the spiral groove (251). The length of the rotating baffle (254) is greater than that of the straight groove (252). The width of the straight groove (252) is connected to the lower end of the spiral groove (251) by a rotating baffle (255). The length of the rotating baffle (255) is greater than the width of the spiral groove (251). An elastic telescopic rod (26) is fixedly connected to the bottom inner wall of the filter barrel (13). A fixing block (261) is fixedly connected to the upper end of the elastic telescopic rod (26). A guide rod (27) is fixedly connected to the upper end of the fixing block (261). The front end of the guide rod (27) is slidably connected to the spiral groove (251), the straight groove (252), and the annular groove (253), respectively.

4. The multi-stage filtration device for an air compressor according to claim 2, characterized in that: The filter assembly (3) includes a filter plate one (31) and a filter plate two (32). The outer surface of the filter plate one (31) is rotatably connected to the filter barrel (13). The outer surface of the rotating shaft (24) is slidably connected to the filter plate one (31). A through hole is provided in the middle position of the filter plate two (32). The filter plate two (32) is conical in shape.

5. A multi-stage filtration device for an air compressor according to claim 4, characterized in that: The collection assembly (6) includes an annular collection box (61) fixedly connected to the lower side of the inner surface of the filter barrel (13). A guide plate (611) is fixedly connected to the upper end of the middle position of the annular collection box (61). A support seat (62) is fixedly connected to the upper end of the middle position of the annular collection box (61) to facilitate the support of the filter plate (32). An annular groove (621) is opened at the upper end of the support seat (62). A plurality of balls (63) are arranged around the lower end of the filter plate (32). The outer surfaces of the plurality of balls (63) are rotatably connected to the annular groove (621).

6. The multi-stage filtration device for an air compressor according to claim 4, characterized in that: The rebound assembly (4) includes two fixed brackets (41) fixedly connected to the inner surface of the filter barrel (13). The two fixed brackets (41) are fixedly connected to a fixed seat (42) at their close ends. A torsion spring (43) is fixedly connected to the inner surface of the fixed seat (42). A locking block (44) is fixedly connected to the end of the torsion spring (43) away from the fixed seat (42). A locking groove (45) is provided on the outer surface of the rotating shaft (24). The locking block (44) is locked in the locking groove (45). During the rotation and lifting process of the rotating shaft (24), the locking groove will be driven. Pull the locking block (44) to store force in place. The upper end of the filter plate (32) is fixedly connected to the fixing seat (46). The inner surface of the fixing seat (46) is fixedly connected to the torsion spring (47). The end of the torsion spring (47) away from the fixing seat (46) is fixedly connected to the upper end of the filter plate (32). The inner surface of the through hole in the middle of the filter plate (32) is fixedly connected to the pushing block (48). When the rotating shaft (24) rotates clockwise, the limiting block (241) will push the pushing block (48), thereby driving the filter plate (32) to rotate together.

7. The multi-stage filtration device for an air compressor according to claim 4, characterized in that: The limiting component (5) includes a limiting rod (51) fixedly connected to the inner wall of the filter barrel (13). A sliding block (52) is slidably connected to the outer surface of the limiting rod (51). A wedge block (53) is fixedly connected to the front end of the sliding block (52). A wedge groove (54) adapted to the wedge block (53) is opened on the outer surface of the filter plate (32), and the inclined surface of the wedge groove (54) is larger than the inclined surface of the wedge block (53). A guide rod (55) is fixedly connected to the lower end of the filter plate (32) and to one side of the wedge block (53). The rotating shaft (24) The outer surface of the filter barrel (13) is provided with a sliding groove (56), and a fixed rod (57) is fixedly connected to the inner surface of the sliding groove (56). A sliding seat (58) is slidably connected to the outer surface of the fixed rod (57). A limiting seat (581) is fixedly connected to one end of the sliding seat (58) near the filter barrel (13). A second slot (582) adapted to the limiting seat (581) is provided on the inner surface of the filter barrel (13). The second slot (582) can limit the sliding seat (58) as a whole. A guide rod (59) is fixedly connected to the lower end of the sliding seat (58).

8. The multi-stage filtration device for an air compressor according to claim 7, characterized in that: The upper end of the sliding block (52) is provided with a guide groove 1 (521), and the lower end of the sliding block (52) is provided with a guide groove 2 (522). When the guide rod 2 (55) rotates clockwise one revolution with the filter plate 2 (32) and passes through the guide groove 2 (522), it will push the wedge block (53) to insert into the inner surface of the wedge groove (54) to limit the filter plate 2 (32). The guide rod 3 (59) rotates clockwise one revolution with the rotating shaft (24) and then rebounds in the opposite direction. When the first groove (521) is in the groove, it will push the wedge block (53) to leave the inner surface of the wedge groove (54), causing the filter plate (32) to lose its limit and rebound. The lower end of the sliding block (52) is provided with a guide groove (523) that is adapted to the rotation trajectory of the guide rod (55). The connection between the guide groove (522) and the guide groove (523) is rotatably connected to a rotating baffle (524). The length of the rotating baffle (524) is greater than the width of the guide groove (523).

9. The multi-stage filtration device for an air compressor according to claim 2, characterized in that: The water removal assembly (7) includes a lifting seat two (71) rotatably connected to the front rotating seat (22). When the front rotating seat (22) rotates, it will drive the lifting seat two (71) to slide up and down on the inner surface of the filter barrel (13). A water collection box (72) is fixedly connected to the upper side of the inner surface of the filter barrel (13). A rotating ring seat (73) is rotatably connected to the upper end of the water collection box (72). The lower side of the rotating ring seat (73) is concave upward, and liquid drips along its arc edge onto the surface of the water collection box (72). A connecting rod (74) is fixedly connected to the middle position of the rotating ring seat (73). A fixing plate (75) is fixedly connected to the lower end of the connecting rod (74). A connecting shaft (76) is rotatably connected to one side of the upper end of the lifting seat (71). The lifting seat (71) and the rotating ring seat (73) are connected by the connecting shaft (76). The upper end of the connecting shaft (76) is located on one side of the fixed plate (75). When the lifting seat (71) is raised or lowered, it will drive the connecting shaft (76) to pull the fixed plate (75) to rotate back and forth. Each rotation angle is less than 180 degrees. Two scrapers (77) are symmetrically arranged on the upper end of the rotating ring seat (73). The outer surfaces of the two scrapers (77) are in contact with the inner surface of the filter barrel (13).

10. The multi-stage filtration device for an air compressor according to claim 1, characterized in that: A fixing seat three (78) is fixedly connected to the upper side of the inner surface of the filter barrel (13), and an impeller (79) is installed at the upper end of the fixing seat three (78).

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