Air filter for air compressor

Abstract

The invention relates to the technical field of air filters, in particular to an air filter for an air compressor, which comprises a mounting disc, a fixing ring is fixedly mounted at the top end of the mounting disc, a mounting cylinder is arranged on the periphery of the fixing ring, the mounting cylinder is fixedly mounted on the outer wall of the mounting disc, and a disc is arranged at the top end of the mounting cylinder. A three-way pipe is arranged above the disc, the two ends of the three-way pipe penetrate through the disc and extend to the bottom end of the disc, two arc-shaped shaping plates are arranged above the fixing ring, and the two arc-shaped shaping plates are connected with the fixing ring through a plurality of shaping frameworks; air entering the mounting cylinder is filtered through the filter screen, the filtered air enters the mounting cylinder and is subjected to secondary filtration through the dust filter screen, dust adsorbed on the dust filter screen is reduced, the filter screen which does not adsorb dust can be moved to the position over the air inlet pipe by controlling the rotating shaft to rotate in the later period, the dust continues to be filtered, and the dust removal efficiency is improved. And the filter screen is prevented from being frequently replaced for use.

Description

Technical Field

[0001] The present invention relates to the technical field of air filters, and particularly to an air filter for an air compressor. Background Art

[0002] An air compressor is a device that compresses ambient air into a gas at a higher pressure. It consists of many components such as a cylinder, a motor, and an air filter. During its operation, air needs to be filtered through the air filter on the air compressor before being sent into the air compressor for compression, to prevent dust and small-sized debris in the air from entering the interior of the air compressor, which may cause damage to the air compressor during long-term use.

[0003] After some existing air filters filter the air, they inhale the air mixed with various dust particles into the air filter and then enter the interior of the air compressor for use after being filtered by the filter element inside the air filter. Most of the filter elements are installed inside the air filter, and during long-term use, a large amount of dust will be adsorbed on the surface of the filter element, affecting its use. Only by disassembling the air filter can the filter element be replaced, which is rather inconvenient. Summary of the Invention

[0004] The purpose of the present invention is to provide an air filter for an air compressor to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An air filter for an air compressor includes a mounting plate. A fixing ring is fixedly installed at the top of the mounting plate. An installation cylinder is arranged outside the fixing ring, and the installation cylinder is fixedly installed on the outer wall of the mounting plate. A disc is arranged at the top of the installation cylinder. A tee pipe is arranged above the disc. Both ends of the tee pipe penetrate through the disc and extend to the bottom of the disc. Two arc-shaped shaping plates are arranged above the fixing ring. A number of shaping skeletons are connected between the two arc-shaped shaping plates and the fixing ring. Two rotating rods are arranged at the top of the mounting plate. Filter dust nets are installed on the outer walls of the two rotating rods. Take-up reels are connected to both of the two filter dust nets. A circular groove is arranged at the bottom of the mounting plate, and a sleeve plate is arranged at the center of the circular groove. A number of connecting plates are fixedly connected to the outer wall of the sleeve plate. Filter dust components are fixedly installed on the number of connecting plates. A fixed toothed ring is fixedly installed on the inner side wall of the circular groove on the mounting plate. A retaining piece is arranged in the circular groove on the mounting plate.

[0007] Driving gears are installed at the bottoms of the two take-up reels. A rotating gear is arranged between the two driving gears. A column is arranged at the top of the rotating gear.

[0008] A through hole is provided at the center position of the set of disks, and a rotating shaft is movably installed in the through hole on the set of disks. The bottom end of the rotating shaft is connected to a turntable, and a square block is installed at the top end of the rotating shaft.

[0009] Two lifting slots are provided on the inner wall of the through hole on the set of disks, and lifting blocks are slidably installed in the lifting slots. Both of the two lifting blocks are fixedly connected to the outer wall of the rotating shaft.

[0010] The dust filtering assembly includes a ring. Two lifting slots are provided inside the ring, and lifting sliders are slidably installed in the lifting slots. A connecting spring is connected between the top end of each lifting slider and the inner wall of the top end of the corresponding lifting slot. A filter screen is fixedly connected between the two lifting sliders. A number of triangular blocks are provided on the filter screen. A circular sliding slot is provided at the top end of the ring, and a rotating toothed ring is movably installed in the circular sliding slot on the ring. A knocking assembly is provided on the inner wall of the rotating toothed ring.

[0011] The knocking assembly includes a mounting frame and a knocking plate. A cross bar is fixedly installed on the mounting frame. A lifting rod is fixedly installed on the knocking plate. A fixed rod is movably sleeved on the outer wall of the lifting rod. A fixed shaft is fixedly installed at the top end of the fixed rod. Two triangular plates are fixedly sleeved on the outer walls of the fixed shaft and the cross bar respectively. Three movable bent rods are provided between the fixed shaft and the cross bar. Three through holes matching the diameter size of the movable bent rods are provided on each of the four triangular plates, and the three movable bent rods all extend into the three through holes on the four triangular plates.

[0012] Two dust outlets are provided on the baffle. The diameter sizes of the two dust outlets are the same as the diameter size of the ring. Two air inlet pipes are provided at the bottom end of the baffle, and the top ends of the two air inlet pipes all penetrate through the baffle and extend to a position flush with the top plate of the baffle.

[0013] Protective cylinders are provided on the peripheries of the two rotating rods, and collecting cylinders are provided on the peripheries of the two winding shafts. Openings are provided on the side walls of the protective cylinders and the collecting cylinders, and rubber gaskets are fixedly installed on the inner walls of the openings.

[0014] A square card slot is provided at the bottom end of the rotating gear, and the length, width and height dimensions of the square card slot are the same as the length, width and height dimensions of the square block.

[0015] A circular movable slot is provided on the inner wall of the circular groove at the bottom end of the mounting disk, and a number of sliding blocks are slidably installed in the circular movable slot. Each single sliding block is fixedly connected to a ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In the present invention, the air entering the installation cylinder is first filtered by a filter net, and the filtered air enters the installation cylinder and is secondarily filtered by a dust filter net, reducing the dust adsorbed on the dust filter net. In the later stage, by controlling the rotation of the rotating shaft, the filter net without adsorbed dust can be moved directly above the air inlet pipe to continue filtering dust, avoiding the need to frequently replace the filter net for use.

[0018] During the rotation of the rotating shaft, the rotating gear ring on the ring is driven to perform a circular motion. During the movement of the rotating gear ring, it will rotate by itself under the influence of the fixed gear ring. The rotating gear ring in rotation will synchronously rotate the knocking plate through the cooperation of the mounting frame, cross bar, lifting rod, fixed rod, fixed shaft, and triangular plate. During the rotation of the knocking plate, the knocking plate will be briefly separated from the surface of the filter net and quickly fall to knock on the filter net under the influence of the triangular block, causing the surface of the filter net to vibrate and the dust adsorbed on the filter net to fall onto the baffle, facilitating the multiple use of a single filter net. Moreover, during the continuous movement of the ring following the rotating shaft, the dust knocked off the filter net can be scraped by the scraping ring at the bottom of the ring fitting the baffle, and when the scraping ring moves to the dust outlet on the baffle, the dust is discharged through the dust outlet.

[0019] By pushing the rotating shaft upward so that the square clamping block is inserted into the square clamping groove at the bottom of the rotating gear, it is convenient to synchronously drive the rotation of the rotating gear and the connecting plate during the rotation of the rotating shaft. During the rotation of the rotating gear, the driving gear is driven to rotate, and the winding shaft on the driving gear winds the dust-adsorbed dust filter net onto its surface. Moreover, the dust filter net on the surface of the rotating rod can be synchronously moved to the top of the fixed ring to complete the replacement of the dust filter net. At this time, the rotating connecting plate can synchronously drive the dust filtering component to rotate to replace the filter net. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a bottom view of the overall structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the disc structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the internal structure of the installation cylinder of the present invention.

[0024] Figure 5 It is a schematic diagram of the shaping skeleton structure of the present invention.

[0025] Figure 6 It is a schematic diagram of the filter net installation structure of the present invention.

[0026] Figure 7 For the present invention Figure 6Schematic diagram of the enlarged structure at location A in

[0027] Figure 8 Schematic diagram of the turntable structure of the present invention.

[0028] Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged local structure in

[0029] Figure 10 Schematic diagram of the bottom structure of the mounting plate of the present invention.

[0030] Figure 11 Schematic diagram of the top structure of the mounting plate of the invention.

[0031] Figure 12 Schematic diagram of the dust filtering assembly structure of the present invention.

[0032] Figure 13 Schematic diagram of the knocking assembly structure of the present invention.

[0033] In the figure: 1, mounting plate; 2, mounting cylinder; 3, fixing ring; 4, shaping skeleton; 5, arc-shaped shaping plate; 6, disc; 7, tee pipe; 8, protective cylinder; 9, rotating rod; 10, dust filter screen; 11, rotating gear; 12, column; 13, linkage gear; 14, collection cylinder; 15, winding shaft; 16, turntable; 17, rotating shaft; 18, sleeve plate; 19, lifting block; 20, square clamping block; 21, connecting plate; 22, dust filtering assembly; 23, fixed gear ring; 24, intake pipe; 25, ring; 26, lifting groove; 27, lifting slider; 28, connecting spring; 29, filter net; 30, triangular block; 31, rotating gear ring; 32, knocking assembly; 33, mounting frame; 34, cross bar; 35, knocking plate; 36, lifting rod; 37, fixed rod; 38, fixed shaft; 39, triangular plate; 40, movable bent rod; 41, dust outlet; 42, baffle. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1 to 10 , the present invention provides a technical solution: an air filter for an air compressor, including a mounting plate 1, as Figures 1 - 8As shown in the figure, an installation cylinder 2 is fixedly installed at the top end of the installation disk 1. A disk 6 is installed at the top end of the installation cylinder 2. The bottom end of the disk 6 is rotationally connected to a rotating rod 9 and a winding shaft 15. Above the rotating rod 9 and the disk 6, there is a three-way pipe 7. The two ends of the three-way pipe 7 penetrate through the disk 6 and extend to the bottom end of the disk 6 and are directly above the inner circle of the fixing ring 3, that is, surrounded by the dust filter net 10 located outside the shaping framework 4, so that the air enters the three-way pipe 7 after being filtered by the dust filter net 10. The other end of the three-way pipe 7 is connected to an existing air compressor, playing the role of air intake. A fixing ring 3 is fixedly installed at the top end of the installation disk 1. Above the fixing ring 3, there are two arc-shaped shaping plates 5. Between the two arc-shaped shaping plates 5 and the fixing ring 3, they are connected by a number of shaping frameworks 4. And due to the special shape of the arc-shaped shaping plate 5, it is not fixedly connected to all the shaping frameworks 4. Rubber rings are arranged on the outer walls of the arc-shaped shaping plate 5 and the shaping framework 4, which is convenient for limiting the dust filter net 10 through the gap between the shaping framework 4 and the arc-shaped shaping plate 5. And on the inner circle side wall of the fixing ring 3, there is a lower groove. On the side wall of the lower groove, there are two guiding openings, and rubber strips are installed in the guiding openings, which is convenient for guiding the dust filter net 10 to enter the lower groove on the fixing ring 3 through the guiding openings. And the bottom ends of a number of shaping frameworks 4 are fixedly connected to the bottom side wall of the lower groove, and a rubber ring is fixedly installed on the side wall of this lower groove. By guiding the dust filter net 10 into the lower groove on the fixing ring 3 and fitting the rubber rings in the shaping framework 4 and the lower groove, it is avoided that air enters the three-way pipe 7 through the gap between the top end of the fixing ring 3 and the dust filter net 10. There are two rotating rods 9 at the top end of the installation disk 1. The two rotating rods 9 are both located between the fixing ring 3 and the installation cylinder 2. And there are two grooves at the top end of the installation disk 1. The two rotating rods 9 are respectively inserted into one groove and are connected to the inner wall of the bottom end of this groove through a rotating connection ring. And between the inner wall of the groove and the outer wall of the rotating rod 9, there is a scroll spring connected. The dust filter net 10 is wound on the outer wall of the rotating rod 9. The dust filter net 10 is connected with winding shafts 15. At the bottom ends of the winding shafts 15, linkage gears 13 are fixedly installed. Between the two linkage gears 13, there is a rotating gear 11. At the top end of the rotating gear 11, a column 12 is fixedly installed. On the outer walls of the rotating gear 11 and the linkage gears 13, there are a number of mutually meshing teeth, and the rotating gear 11 is movably attached to the two linkage gears 13, which is convenient for driving the two linkage gears 13 to rotate during the rotation of the rotating gear 11. Above the two linkage gears 13, there are collection cylinders 14. The diameter size of the collection cylinder 14 is smaller than the diameter size of the linkage gear 13. And on the outer wall of a single collection cylinder 14, there are two L-shaped insertion rods. At the top end of the installation disk 1, there are four insertion holes matching the diameter size of the L-shaped insertion rods. By inserting the L-shaped insertion rods into the insertion holes, the collection cylinder 14 can be fixed above the linkage gear 13. And between the bottom side wall of the collection cylinder 14 and the linkage gear 13, there is a rubber gasket, and the rubber gasket is fixedly installed on the bottom plate of the collection cylinder 14. Protective cylinders 8 are arranged around the two rotating rods 9.The protective cylinder 8 can provide shielding protection for the dust filter net 10 outside the rotating rod 9 to prevent excessive dust from adhering to its surface. The protective cylinder 8 is fixedly installed at the top of the mounting plate 1. Openings are provided on the side walls of both the protective cylinder 8 and the collection cylinder 14, and rubber gaskets are fixedly installed on the inner walls of the openings. The width of the openings on the protective cylinder 8 and the collection cylinder 14 is one centimeter larger than the thickness of the dust filter net 10. This facilitates the rotation of the two linkage gears 13 driven by the rotation of the rotating gear 11 during the rotation process, and the synchronous rotation of the winding shaft 15 during the rotation of the linkage gears 13, so that the dust filter net 10 filtering dust outside the shaping skeleton 4 is wound onto the outer wall of the winding shaft 15. At this time, the unfiltered dust filter net 10 wound on the outer wall of the rotating rod 9 will be guided by the arc-shaped shaping plate 5 to be exposed for dust filtering treatment, and the collection cylinder 14 will cover the dust filter net 10 with dust on its surface to prevent dust from flying everywhere.

[0036] A circular groove is provided at the bottom of the mounting plate 1, and a sleeve plate 18 is provided at the center of the circular groove. A plurality of connecting plates 21 are fixedly installed on the outer wall of the sleeve plate 18, and a dust filtering assembly 22 is fixedly installed on each of the plurality of connecting plates 21. A fixed gear ring 23 is fixedly installed on the inner side wall of the circular groove on the mounting plate 1. Through holes are provided at the upper and lower ends of the center position of the sleeve plate 18, and a rotating shaft 17 is movably installed in the through holes. Two lifting slots are provided on the inner wall of the through holes of the sleeve plate 18, and the height of the two lifting slots is half of the height of the sleeve plate 18 and is close to the top of the sleeve plate 18. Lifting blocks 19 are slidably installed in the two lifting slots, and both of the two lifting blocks 19 are fixedly connected to the outer wall of the rotating shaft 17. This facilitates driving the sleeve plate 18, the connecting plates 21, and the dust filtering assembly 22 to rotate through the restriction of the lifting blocks 19 during the rotation of the rotating shaft 17. The bottom end of the rotating shaft 17 is connected to a turntable 16, and a square clamping block 20 is fixedly installed at the top end of the rotating shaft 17. A square clamping groove matching the length, width, and height dimensions of the square clamping block 20 is provided at the bottom end of the rotating gear 11. A through hole is provided at the center position of the mounting plate 1, and the diameter dimension of the through hole is the same as the diameter dimension of the rotating shaft 17. The rotating shaft 17 can be pushed upward and pass through the through hole at the center position of the mounting plate 1 so that the square clamping block 20 is inserted into the square clamping groove at the bottom end of the rotating gear 11, enabling the rotating shaft 17 to drive the rotating gear 11 to rotate during the rotation process.

[0037] A baffle 42 is arranged in the circular groove at the bottom end of the installation disk 1. A through hole is arranged at the center position of the baffle 42, and the diameter dimension of the through hole is the same as that of the rotating shaft 17. The top end of the baffle 42 is rotationally connected to the sleeved disk 18 through a rotating connection ring, ensuring that the sleeved disk 18 can perform circular motion at the top end of the baffle 42. The diameter dimension of the baffle 42 is the same as that of the circular groove on the installation disk 1, and a rubber ring is arranged on the outer wall of the baffle 42. Two dust outlets 41 are arranged on the baffle 42. The diameter dimensions of the two dust outlets 41 are the same as that of the ring 25. Two air inlet pipes 24 are arranged at the bottom end of the baffle 42, and the top ends of the two air inlet pipes 24 penetrate through the baffle 42 and extend to a position flush with the top plate of the baffle 42. Two air inlets are also arranged on the installation disk 1, and the two air inlets are aligned with the two air inlet pipes 24. Air enters the installation disk 1 through the air inlet pipes 24, is filtered by the dust filtering assembly 22, moves above the installation disk 1 through the air inlets, and is further filtered by the dust filtering net 10.

[0038] By controlling the rotation of the rotating shaft 17, several dust filtering assemblies 22 can be driven to perform circular motion, so that different dust filtering assemblies 22 move to the position directly above the air inlet pipes 24 for dust filtering work. And by pushing the rotating shaft 17 upward, the square clamping block 20 is inserted into the square clamping groove at the bottom end of the rotating gear 11, so that the rotating gear 11 is driven to rotate during the rotation of the rotating shaft 17, which is convenient for adjusting the dust filtering net 10 and the filtering net 29 according to the usage situation and usage duration, so that the dust filtering effect of the air filter can meet the standard.

[0039] Please refer to Figures 10 - 13, the dust filtering component 22 includes a circular ring 25. A scraping ring is provided at the bottom end of the circular ring 25. The scraping ring is made of rubber, which facilitates the scraping ring to rotate along with the circular ring 25 and scrape the dust on the baffle 42 within the movable area of the circular ring 25 during rotation. The outer walls of the circular ring 25 are all connected to a connecting plate 21. The inner wall of the circular groove at the bottom end of the mounting plate 1 is provided with a circular movable groove, and a plurality of sliding blocks are slidably installed in the circular movable groove, and each single sliding block is fixedly connected to a circular ring 25 respectively, which is convenient to ensure that the circular ring 25 can perform circular motion. Two lifting grooves 26 are provided inside the circular ring 25. Lifting sliders 27 are slidably installed in the two lifting grooves 26 respectively. Between the top ends of the lifting sliders 27 and the inner walls of the top ends of the lifting grooves 26 are connected by connecting springs 28 respectively. A filter screen 29 is fixedly connected between the two lifting sliders 27. A plurality of triangular blocks 30 are provided on the filter screen 29. A circular chute is provided at the top end of the circular ring 25. A rotating toothed ring 31 is movably installed in the circular chute. A plurality of mutually meshing teeth are provided on the outer wall of the rotating toothed ring 31 and the inner wall of the fixed toothed ring 23, and the outer wall of the rotating toothed ring 31 is movably attached to the inner wall of the fixed toothed ring 23. During the process that the rotating shaft 17 drives the circular ring 25 to rotate through the sleeve plate 18 and the connecting plate 21, the circular ring 25 will drive the rotating toothed ring 31 attached to the inner wall of the fixed toothed ring 23 to rotate during movement, so that the knocking component 32 installed on the rotating toothed ring 31 rotates synchronously. A knocking component 32 is provided on the inner wall of the rotating toothed ring 31.

[0040] The knocking component 32 includes a mounting bracket 33 and a knocking plate 35. The mounting bracket 33 is fixedly installed on the inner wall of the rotating toothed ring 31. A cross bar 34 is fixedly installed on the mounting bracket 33. A lifting rod 36 is fixedly installed on the knocking plate 35. A fixing rod 37 is movably sleeved on the outer wall of the lifting rod 36. That is, a groove matching the diameter of the lifting rod 36 is provided at the bottom end of the fixing rod 37, and a spring is connected between the inner wall of the top end of the groove and the top plate of the lifting rod 36. A fixing shaft 38 is fixedly installed at the top end of the fixing rod 37. Two triangular plates 39 are fixedly sleeved on the outer walls of the fixing shaft 38 and the cross bar 34 respectively. Three movable bent rods 40 are arranged between the fixing shaft 38 and the cross bar 34. Three through holes matching the diameter of the movable bent rods 40 are provided on each of the four triangular plates 39. The three movable bent rods 40 all extend into the three through holes on the four triangular plates 39. That is, the three movable bent rods 40 are movably sleeved on the four triangular plates 39. During the rotation of the rotating toothed ring 31, the mounting bracket 33 and the cross bar 34 move in a circular motion synchronously. During the movement, the triangular plate 39 on the cross bar 34 will affect the movable bent rod 40 and cause the movable bent rod 40 to displace. During the displacement, the fixing shaft 38, the lifting rod 36 and the knocking plate 35 will be driven to rotate. During the rotation of the knocking plate 35, it will contact the triangular block 30 and disconnect the contact with the filter screen 29 through the triangular block 30. And during the continuous movement of the knocking plate 35, the contact with the triangular block 30 will be disconnected. At this time, the spring in the fixing rod 37 pushes the lifting rod 36 and the knocking plate 35 to move downward to knock the filter screen 29, so that the filter screen 29 can effectively vibrate, making the dust fall downward and located at the top end of the baffle 42. And during the continuous rotation of the rotating shaft 17, the scraping ring at the bottom end of the baffle 42 is driven to scrape the dust and move it to the dust outlet 41 on the baffle 42 for discharge. And by pulling out the movable bent rod 40, it is convenient to remove the knocking plate 35 from the filter screen 29 in the later stage.

[0041] When the present invention is in use, air is guided through the intake pipe 24 into the ring 25 and filtered by the filter screen 29 inside the ring 25, then enters the installation cylinder 2, is filtered by the dust filter screen 10 located outside the shaping framework 4, and is sucked into the tee pipe 7 and transferred into the air compressor. The dust filter screen 10 directly above the intake pipe 24 adsorbs more dust on its surface during long-term use. The staff can hold the turntable 16 and rotate it, causing the turntable 16 to drive the rotating shaft 17, the sleeved disc 18, the lifting block 19, and the connecting plate 21 to rotate. At this time, the ring 25 rotates synchronously, replacing the ring 25 directly above the intake pipe 24 with another ring 25. During the rotation of the ring 25, the rotating gear ring 31 at its top will be affected by the fixed gear ring 23 and rotate. The rotating gear ring 31 during rotation will drive the mounting bracket 33, the cross bar 34, the movable bent rod 40, the triangular plate 39, the fixed rod 37, the fixed shaft 38, and the knocking plate 35 to rotate. During the rotation of the knocking plate 35, it will contact the triangular block 30 and move to the top of the triangular block 30 to disconnect the contact with the filter screen 29, and during the continuous movement, it will disconnect the contact with the triangular block 30 and push the lifting rod 36 to move through the spring inside the fixed rod 37, causing the knocking plate 35 to impact the top of the filter screen 29, making the filter screen 29 vibrate, causing the dust to fall downward and be located at the top of the baffle 42. At this time, the ring 25 is still in motion. The dust on the baffle 42 can be scraped and moved by the scraping ring at the bottom of the ring 25, and after moving to the dust outlet 41 at the top of the baffle 42, the dust is discharged from the dust outlet 41. When it is necessary to replace the dust filter screen 10 outside the shaping framework 4, the rotating shaft 17 is pushed upward to penetrate the mounting disc 1 to contact the rotating gear 11, and the square clamping block 20 is inserted into the square clamping groove at the bottom of the rotating gear 11. Then, the rotating shaft 17 is controlled to rotate. During the rotation of the rotating shaft 17, the rotating gear 11 rotates under the influence of the square clamping block 20. During the rotation of the rotating gear 11, it drives the two linkage gears 13 to rotate. During the rotation of the two linkage gears 13, they drive the winding shaft 15 to rotate, causing the dust filter screen 10 connected to the winding shaft 15 to be wound onto the surface of the winding shaft 15. At this time, the rotating rod 9 will rotate synchronously during the movement of the dust filter screen 10, causing the new dust filter screen 10 to move to the outside of the shaping framework 4 and be restricted by the fixed ring 3, the shaping framework 4, and the arc-shaped shaping plate 5 to be assembled into a cylinder with it. The air can only enter the tee pipe 7 after being filtered by the dust filter screen 10. At this time, the lifting block 19 is still located in the lifting movable groove on the sleeved disc 18, that is, the filter screen 29 and the dust filter screen 10 can be replaced synchronously under the influence of the lifting block 19.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air filter for an air compressor, comprising a mounting plate (1), characterized in that: A fixing ring (3) is fixedly mounted on the top of the mounting plate (1), a mounting tube (2) is arranged on the periphery of the fixing ring (3), and the mounting tube (2) is fixedly mounted on the outer wall of the mounting plate (1), a disc (6) is arranged on the top of the mounting tube (2), a three-way pipe (7) is arranged above the disc (6), both ends of the three-way pipe (7) penetrate the disc (6) and extend to the bottom of the disc (6), two arc-shaped shaping plates (5) are arranged above the fixing ring (3), the two arc-shaped shaping plates (5) are connected to the fixing ring (3) through a plurality of shaping frames (4), and the top of the mounting plate (1) is provided with a circular disc (6). Two rotating rods (9) are provided, and dust filter screens (10) are installed on the outer walls of the two rotating rods (9), and the two dust filter screens (10) are connected to the winding shaft (15). A circular groove is provided at the bottom end of the installation disk (1), and a set disk (18) is provided at the center of the circular groove. A plurality of connecting plates (21) are fixedly connected to the outer wall of the set disk (18), and a dust filter assembly (22) is fixedly installed on the plurality of connecting plates (21). A fixed tooth ring (23) is fixedly installed on the inner side wall of the circular groove on the installation disk (1), and a blocking piece (42) is provided in the circular groove on the installation disk (1).

2. The air filter for an air compressor according to claim 1, characterized in that: The bottom ends of the two winding shafts (15) are both provided with linkage gears (13), a rotating gear (11) is arranged between the two linkage gears (13), and a column (12) is arranged at the top end of the rotating gear (11).

3. The air filter for an air compressor according to claim 1, characterized in that: A through hole is provided at the center of the set disk (18), and a rotating shaft (17) is movably installed in the through hole on the set disk (18), the bottom end of the rotating shaft (17) is connected to a rotating disk (16), and a square clamping block (20) is installed at the top end of the rotating shaft (17).

4. The air filter for an air compressor according to claim 3, characterized in that: Two lifting movable grooves are arranged on the inner wall of the through hole on the set plate (18), and lifting blocks (19) are slidably installed in the lifting movable grooves, and the two lifting blocks (19) are fixedly connected to the outer wall of the rotating shaft (17).

5. The air filter for an air compressor according to claim 1, characterized in that: The dust filter assembly (22) comprises a circular ring (25), two lifting grooves (26) are arranged in the circular ring (25), and lifting sliders (27) are slidably installed in the lifting grooves (26). The top of the lifting sliders (27) and the inner wall of the top of the lifting grooves (26) are connected by connecting springs (28). A filter screen (29) is fixedly connected between the two lifting sliders (27), and a plurality of triangular blocks (30) are arranged on the filter screen (29). A circular slide groove is arranged at the top of the circular ring (25), and a rotating gear ring (31) is movably installed in the circular slide groove on the circular ring (25), and a knocking assembly (32) is arranged on the inner wall of the rotating gear ring (31).

6. The air filter for an air compressor according to claim 5, characterized in that: The knocking assembly (32) comprises a mounting frame (33) and a knocking plate (35). A cross bar (34) is fixedly mounted on the mounting frame (33). A lifting rod (36) is fixedly mounted on the knocking plate (35). A fixing rod (37) is movably mounted on the outer wall of the lifting rod (36). A fixing shaft (38) is fixedly mounted on the top of the fixing rod (37). Two triangular plates (39) are fixedly mounted on the outer walls of the fixing shaft (38) and the cross bar (34). Three movable bent rods (40) are arranged between the fixed shaft (38) and the cross bar (34). Three through holes matching the diameter of the movable bent rods (40) are arranged on the four triangular plates (39), and the three movable bent rods (40) extend into the three through holes on the four triangular plates (39).

7. The air filter for an air compressor according to claim 1, characterized in that: The baffle (42) is provided with two dust outlets (41), the diameter of the two dust outlets (41) is the same as the diameter of the ring (25), and the bottom end of the baffle (42) is provided with two air inlet pipes (24), and the top ends of the two air inlet pipes (24) penetrate the baffle (42) and extend to a position flush with the top plate of the baffle (42).

8. The air filter for an air compressor according to claim 1, characterized in that: A protective tube (8) is disposed on the periphery of the two rotating rods (9), a collecting tube (14) is disposed on the periphery of the two winding shafts (15), and openings are disposed on the side walls of the protective tube (8) and the collecting tube (14), and rubber gaskets are fixedly installed on the inner walls of the openings.

9. The air filter for an air compressor according to claim 1, characterized in that: A square card slot is provided at the bottom end of the rotating gear (11), and the length, width and height dimensions of the square card slot are the same as those of the square card block (20).

10. The air filter for an air compressor according to claim 1, characterized in that: A circular movable groove is arranged on the inner wall of the circular groove at the bottom end of the installation plate (1), and a plurality of sliding blocks are slidably installed in the circular movable groove, and each sliding block is fixedly connected to a circular ring (25).

Images