Air filter for agricultural machinery

Abstract

The agricultural machine air filter comprises a clearance filtering bin, an air inlet bin is in threaded connection with the upper end of the clearance filtering bin, a filtering bin is arranged in the clearance filtering bin, and the agricultural machine air filter further comprises a fixing mechanism and an air inlet opening and closing mechanism; the fixing mechanism comprises a sliding column, a driving block and a sliding rod, the sliding column is slidably connected to the lower end of the filtering bin, the driving block is fixedly connected to the upper end of the sliding column, evenly-distributed supports are fixedly connected to the lower end of the filtering bin, the sliding rod is slidably connected to the middle of each support, and the end, close to the center of the filtering bin, of each sliding rod is fixedly connected with a supporting block; according to the air filter for the agricultural machine, the filtering bin can be rapidly and stably installed, meanwhile, the air inlet bin can be rapidly opened and closed, the air inlet bin can be rapidly opened and closed, the air inlet bin can be rapidly opened and closed, the air inlet bin can be rapidly opened and closed, and the service life of the air inlet bin is prolonged. And the mounting and use convenience of the filter element of the air filter of the agricultural machine is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of air filters, in particular to an agricultural machinery air filter. Background Art

[0002] Agricultural machinery air filter is a vital component in agricultural machinery equipment. Its main function is to filter impurities in the air, protect the engine cylinder and piston parts, reduce wear, and thus extend the service life of the engine. Agricultural machinery air filter usually consists of two parts: filter element and housing. The filter element is the key component for filtering air, while the housing is used to fix the filter element and guide air flow;

[0003] Some existing agricultural machinery air filters adopt a method of directly placing the filter element inside the shell, and the bottom wall of the shell and the shell cover work together to realize the vertical fixation of the filter element. Some agricultural machinery air filters adopt a method of keeping the air inlet of the air inlet bin open, so that external air directly enters the air filter.

[0004] This type of agricultural machinery air filter has some problems. For example, the filter element is placed directly inside the shell. During the operation of the agricultural machinery, the filter element may be laterally offset due to the vibration of the air filter, affecting the filtering effect of the air filter. The air inlet of the air intake bin is always open, which may cause debris to enter the interior of the air filter, affecting the service life and filtering effect of the air filter. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide an agricultural machinery air filter that can realize the rapid and stable installation of the filter bin and the rapid opening and closing of the air intake bin, thereby greatly improving the convenience of installation and use of the filter element of the agricultural machinery air filter and effectively solving the problems in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: an agricultural machinery air filter, comprising a filter chamber, the upper end of the filter chamber is threadedly connected to an air intake chamber, a filter chamber is arranged inside the filter chamber, and also comprises a fixing mechanism and an air intake opening and closing mechanism;

[0007] The fixing mechanism includes a sliding column, a driving block and a sliding rod. The sliding column is slidably connected to the lower end of the filter bin, the upper end of the sliding column is fixedly connected to the driving block, the lower end of the filter bin is fixedly connected to evenly distributed supports, the middle parts of the supports are slidably connected to the sliding rods, the ends of the sliding rods close to the center of the filter bin are fixedly connected to the support blocks, the support blocks are installed in cooperation with the driving blocks, the ends of the sliding rods away from the center of the filter bin are fixedly connected to the arc plates, the arc plates are tightly fitted to the inner wall of the filter bin, the bottom wall of the filter bin is fixedly connected to the fixing ring, the inner wall of the fixing ring is tightly fitted to the lower end of the outer surface of the filter bin;

[0008] Intake opening and closing mechanism: It is arranged at the upper end of the intake bin, which can realize the fast and stable installation of the filter bin, and at the same time can realize the fast opening and closing of the intake bin, which greatly improves the convenience of filter element installation and use of agricultural machinery air filter.

[0009] Furthermore, the fixing mechanism also includes spring 1 and spring 2, wherein spring 1 is fixedly connected between the lower surface of the driving block and the bottom wall of the filter bin, spring 1 is movably sleeved on the outer surface of the sliding column, and spring 2 is fixedly connected between the arc plate and the horizontally radially adjacent supports, and spring 2 is movably sleeved on the outer surfaces of the horizontally radially adjacent sliding rods to provide driving force for the resetting of the driving block and the sliding rod.

[0010] Furthermore, the fixing mechanism also includes a driving handle, a fixing cylinder and a limit plate. The driving handle is evenly fixedly connected to the lower end of the sliding column, a through hole is provided inside the driving handle, the fixing cylinder is fixedly connected to the middle part of the lower surface of the filter bin, the lower end of the inner wall of the fixing cylinder is fixedly connected to the limit plate, the upper end of the limit plate is provided with a rib groove 1, the lower end of the driving handle is fixedly connected with a rib 1, and the rib 1 is installed in cooperation with the horizontally radially adjacent rib groove 1 to realize the vertical position locking of the sliding column, thereby ensuring the stability of the horizontal clamping of the filter bin.

[0011] Furthermore, both upper and lower ends of the driving block are conical surfaces, and one end of the support block close to the center of the filter bin is provided with an arc surface, which facilitates the driving block to push the support block and reduces the wear caused by contact between the driving block and the support block.

[0012] Furthermore, the air intake opening and closing mechanism also includes a slide groove, a closing plate, a turntable and a rotating shaft. The slide groove is arranged on the bottom wall of the air intake bin, and the interior of the slide groove is slidably connected with an evenly distributed closing plate. Three evenly distributed air inlets are arranged in the middle of the air intake bin, and the upper ends of the three closing plates are fixedly connected to the lower end of the turntable. The rotating shaft is rotatably connected to the upper end of the air intake bin, and the lower end of the rotating shaft is fixedly connected to the lower end of the turntable to realize the opening and closing control of the air intake.

[0013] Furthermore, the air intake opening and closing mechanism also includes a driving cylinder and a rib plate. The driving cylinder is movably sleeved on the upper end of the outer surface of the rotating shaft. Two symmetrically distributed rib grooves are arranged inside the driving cylinder. The upper end of the outer surface of the rotating shaft is fixedly connected with two symmetrically distributed ribs. The two ribs are slidably connected with the two rib grooves adjacent to each other in the horizontal radial direction. The upper end of the outer surface of the driving cylinder is fixedly connected with the rib plate to provide driving force for the rotation of the turntable.

[0014] Furthermore, the air intake opening and closing mechanism also includes a locking column, which is evenly fixedly connected to the center position of the upper surface of the air intake bin. A sliding mouth is provided at one end of the rib away from the center of the driving cylinder. The interior of the sliding mouth is cooperated with the outer surface of the locking column adjacent to the horizontal radial direction to achieve position locking of the turntable.

[0015] Furthermore, a folded filter cartridge is provided inside the filter bin, a filter screen is fixedly connected inside the air inlet, and the lower surface of the air inlet bin is tightly fitted with the upper surface of the filter bin, thereby improving the air filtering effect.

[0016] Furthermore, an air intake pipe is provided at the lower end of the air intake bin, a spiral sheet is fixedly connected to the inner wall of the air intake pipe, and the air intake pipe is located inside the filter bin, so that the incoming air contacts the filter bin as evenly as possible.

[0017] Furthermore, an air outlet pipe is provided at the lower end of the filter bin, a mounting cylinder is fixedly connected to the lower end of the filter bin, and evenly distributed mounting holes are provided at the lower end of the mounting cylinder to exhaust air and realize the installation of the air filter at the same time.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the agricultural machinery air filter has the following advantages:

[0019] 1. The driving block pushes the arc plate so that the arc plate and the fixing ring work together, and the arc plate and the driving block are reset with the assistance of the spring 1 in the vertical state and the spring 2 in the horizontal state, and the vertical limitation of the sliding column is realized through the limit plate, and the position locking of the fixing mechanism is realized, and finally the filter bin is installed quickly and stably, which greatly improves the convenience of filter element installation of agricultural machinery air filter.

[0020] 2. The air inlet is opened and closed by rotating the closing plate with a turntable, and the lateral position of the drive cylinder is locked by the coordinated installation of the rib plate and the locking column, thereby locking the lateral position of the turntable, and finally realizing the rapid opening and closing of the air inlet bin, preventing foreign matter from entering the interior of the air inlet bin through the air inlet when not in use, greatly improving the service life of the agricultural machinery air filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure inside the present invention;

[0023] Figure 3 This is a schematic diagram of the enlarged structure of location A of the present invention;

[0024] Figure 4 This is an enlarged structural diagram of B of the present invention;

[0025] Figure 5 It is a schematic cross-sectional structural diagram of the air intake bin of the present invention.

[0026] In the figure: 1 filter bin, 2 air intake bin, 3 air outlet pipe, 4 fixing mechanism, 41 slide column, 42 spring 1, 43 driving block, 44 slide rod, 45 driving handle, 46 spring 2, 47 fixing cylinder, 48 limiting plate, 5 air intake opening and closing mechanism, 51 slide groove, 52 closing plate, 53 turntable, 54 rotating shaft, 55 driving cylinder, 56 rib plate, 57 locking column, 6 filter bin, 7 folded filter cartridge, 8 air intake cartridge, 9 spiral sheet, 10 filter screen, 11 fixing ring, 12 mounting cylinder. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-5 , this embodiment provides a technical solution: an agricultural machinery air filter, comprising a filter bin 1, the upper end of the filter bin 1 is threadedly connected to an air intake bin 2, a filter bin 6 is arranged inside the filter bin 1, and also includes a fixing mechanism 4 and an air intake opening and closing mechanism 5;

[0029] The fixing mechanism 4 includes a slide post 41, a driving block 43 and a slide rod 44. The slide post 41 is slidably connected to the lower end of the filter bin 1. The upper end of the slide post 41 is fixedly connected to the driving block 43. The lower end of the filter bin 1 is fixedly connected to evenly distributed supports. The middle part of the supports is slidably connected to the slide rod 44. The end of the slide rod 44 close to the center of the filter bin 1 is fixedly connected to the support block. The support blocks are installed in cooperation with the driving block 43. The upper and lower ends of the driving block 43 are conical surfaces. The end of the support block close to the center of the filter bin 1 is provided with an arc surface. The end of the slide rod 44 away from the center of the filter bin 1 is fixedly connected to an arc plate. The arc plate is tightly fitted with the inner wall of the filter bin 6. The bottom wall of the filter bin 1 is fixedly connected to the fixing ring 11. The fixing ring 11 The inner wall fits tightly with the lower end of the outer surface of the filter bin 6. The fixing mechanism 4 also includes a spring 1 42 and a spring 2 46. The spring 1 42 is fixedly connected between the lower surface of the driving block 43 and the bottom wall of the filter bin 1. The spring 1 42 is movably sleeved on the outer surface of the sliding column 41. The spring 2 46 is fixedly connected between the arc plate and the horizontally radially adjacent supports. The spring 2 46 is movably sleeved on the outer surface of the horizontally radially adjacent sliding rod 44. The fixing mechanism 4 also includes a driving handle 45, a fixing cylinder 47 and a limiting plate 48. The driving handle 45 is evenly fixedly connected to the lower end of the sliding column 41. The interior of the driving handle 45 is provided with a through hole. The fixing cylinder 47 is fixedly connected to the middle part of the lower surface of the filter bin 1. The lower end of the inner wall of the fixing cylinder 47 is fixedly connected to the limited The upper ends of the positioning plate 48 and the limiting plate 48 are both provided with a rib groove 1, and the lower ends of the driving handles 45 are fixedly connected with ribs 1, and the ribs 1 are all installed in cooperation with the rib grooves 1 adjacent to the horizontal radial direction, and the filter bin 6 is placed inside the filter bin 1, so that the lower end of the outer surface of the filter bin 6 is tightly fitted with the inner wall of the fixing ring 11, and then the sliding column 41 is pushed upward by the evenly distributed driving handles 45, and the upward movement of the sliding column 41 drives the driving block 43 to move upward, and at the same time, the spring 1 42 is elastically stretched. During the upward movement of the driving block 43, the conical surface on the upper side of the driving block 43 contacts the arc surface of the evenly distributed support blocks, and the sliding rods 44 are pushed by the support blocks to move in the direction away from the center of the filter bin 1, and the outward movement of the sliding rods 44 pushes the arc surfaces adjacent to the horizontal radial direction. The arc plate moves in the direction away from the center of the filter bin 1, and the arc plate cooperates with the fixing ring 11 to achieve a stable lateral clamping of the filter bin 6. After the clamping is stable, the driving handle 45 is rotated. When the ribs at the lower end of the driving handle 45 slide into the corresponding rib grooves at the upper end of the limiting plate 48, the driving handle 45 is stopped from rotating. The limiting plate 48 limits the vertical position of the vertically adjacent driving handles 45, thereby achieving the vertical position limit of the sliding column 41, and finally achieving the lateral position limit of the arc plate, and then the air intake bin 2 is rotated to connect to the upper end of the filter bin 1, so that the lower surface of the air intake bin 2 is closely fitted with the upper surface of the filter bin 6, thereby achieving the vertical position limit of the filter bin 6, and ensuring the stability of the filter bin 6 during the working process;

[0030] The air intake opening and closing mechanism 5 is arranged at the upper end of the air intake bin 5. The air intake opening and closing mechanism 5 also includes a slide 51, a closing plate 52, a rotating disk 53 and a rotating shaft 54. The slide 51 is arranged on the bottom wall of the air intake bin 2. The interior of the slide 51 is slidably connected with the evenly distributed closing plates 52. The middle part of the air intake bin 2 is provided with three evenly distributed air intake ports. The upper ends of the three closing plates 52 are fixedly connected to the lower end of the rotating disk 53. The rotating shaft 54 ​​is rotatably connected to the upper end of the air intake bin 2. The lower end of the rotating shaft 54 ​​is connected to the rotating disk 53. The lower end of the disk 53 is fixedly connected, the air intake opening and closing mechanism 5 also includes a driving cylinder 55 and a rib plate 56, the driving cylinder 55 is movably sleeved on the upper end of the outer surface of the rotating shaft 54, and the driving cylinder 55 is provided with two symmetrically distributed rib grooves inside, and the upper end of the outer surface of the rotating shaft 54 ​​is fixedly connected with two symmetrically distributed ribs, and the two ribs are slidably connected with the two rib grooves adjacent to the horizontal radial direction, and the upper end of the outer surface of the driving cylinder 55 is fixedly connected with the rib plate 56, and the air intake opening and closing mechanism 5 also includes a locking column 57, and the locking column 57 is evenly The rib plate 56 is fixedly connected to the center position of the upper surface of the air inlet bin 2, and a sliding mouth is provided at one end of the rib plate 56 away from the center of the driving cylinder 55, and the interior of the sliding mouth is matched with the outer surface of the locking column 57 adjacent to the horizontal radial direction. When the agricultural machine is not working, the closing plate 52 realizes the closing of the air inlet. When the agricultural machine is working, the driving cylinder 55 is first slid upward through the rib plate 56. When the sliding mouth ends contact with the corresponding locking column 57, the driving cylinder 55 is horizontally rotated through the rib plate 56. The rotation of the driving cylinder 55 drives the rotating shaft 54 ​​to rotate, thereby causing the rotating disk 53 to rotate. The rotation of the rotating disk 53 drives the closing plate 52 to rotate. The lower end of the closing plate 52 slides horizontally inside the sliding groove 51. When the closing plate 52 rotates 120 degrees around the central axis of the rotating shaft 54, the closing of the air inlet is completed. Then, the driving cylinder 55 is slid downward through the rib plate 56, and the interior of the sliding mouth is slidably connected with the outer surface of the locking column 57 adjacent to the vertical direction, so as to realize the lateral position locking of the driving cylinder 55, thereby realizing the position locking of the closing plate 52.

[0031] Among them: a folded filter cartridge 7 is provided inside the filter bin 6, and a filter screen 10 is fixedly connected to the inside of the air inlet. The lower surface of the air inlet bin 2 is tightly fitted with the upper surface of the filter bin 6. An air inlet pipe 8 is provided at the lower end of the air inlet bin 2, and a spiral sheet 9 is fixedly connected to the inner wall of the air inlet pipe 8. The air inlet pipe 8 is located inside the filter bin 6, and an air outlet pipe 3 is provided at the lower end of the filter bin 1. A mounting cylinder 12 is fixedly connected to the lower end of the filter bin 1, and evenly distributed mounting holes are provided at the lower end of the mounting cylinder 12. External air enters the interior of the air inlet bin 2 through the air inlet, and at the same time, the filter screen 10 realizes preliminary filtration of external air. External air enters the interior of the filter bin 1 through the air inlet pipe 8. At the same time, the spiral sheet 9 effectively reduces the flow speed of external air and enters the interior of the filter bin 6 under the guidance of the air inlet pipe 8, and then the filter bin 6 and the folded filter cartridge 7 realize the filtration of external air, and the filtered gas enters the interior of the agricultural machinery engine through the air outlet pipe 3.

[0032] The working principle of an agricultural machinery air filter provided by the present invention is as follows: when working, the personnel first place the filter bin 6 inside the filter bin 1, so that the lower end of the outer surface of the filter bin 6 is tightly fitted with the inner wall of the fixing ring 11, and then the personnel push the sliding column 41 upward through the evenly distributed driving handle 45, and the upward movement of the sliding column 41 drives the driving block 43 to move upward, and at the same time, the spring 1 42 is elastically stretched. During the upward movement of the driving block 43, the conical surface on the upper side of the driving block 43 contacts the arc surface of the evenly distributed support block, and the support block pushes the sliding rod 44 to move in a direction away from the center of the filter bin 1, and the outward movement of the sliding rod 44 pushes the horizontally radially adjacent arc plates to move in a direction away from the center of the filter bin 1, and the arc plates and the fixing ring 11 The filter bin 6 is then clamped in a stable lateral direction and the filter bin 6 is then clamped in a stable manner. The operator rotates the drive handle 45, and when the ribs at the lower end of the drive handle 45 slide into the corresponding rib grooves at the upper end of the limit plate 48, the drive handle 45 is stopped. The limit plate 48 limits the vertical position of the vertically adjacent drive handles 45, thereby limiting the vertical position of the slide column 41, and finally limiting the lateral position of the arc plate. The operator then rotates the air intake bin 2 to connect it to the upper end of the filter bin 1, so that the lower surface of the air intake bin 2 fits tightly with the upper surface of the filter bin 6, thereby limiting the vertical position of the filter bin 6 and ensuring the stability of the filter bin 6 during operation. The operator then fastens the mounting hole at the lower end of the mounting cylinder 12 and the working The threaded holes in the area are stably connected, thereby achieving stable installation of the air filter, and connecting the right end of the outlet pipe 3 with the air inlet of the agricultural machinery engine. When the agricultural machinery is not working, the closing plate 52 closes the air inlet and cooperates with the corresponding filter screen 10 to prevent debris from entering the interior of the filter bin 1. When the agricultural machinery is working, the personnel first slide the driving cylinder 55 upward through the rib plate 56. When the sliding mouth ends contact with the corresponding locking column 57, the driving cylinder 55 is rotated horizontally through the rib plate 56. The rotation of the driving cylinder 55 drives the rotating shaft 54 ​​to rotate, thereby causing the turntable 53 to rotate. The rotation of the turntable 53 drives the closing plate 52 to rotate. The lower ends of the closing plate 52 slide horizontally inside the slide groove 51, and the closing plate 52 rotates around the center of the rotating shaft 54. When the axis rotates 120 degrees, the closing of the air inlet is completed, and then the personnel slides the driving cylinder 55 downward through the rib plate 56. The inside of the sliding mouth is slidably connected with the outer surface of the vertically adjacent locking column 57 to achieve lateral position locking of the driving cylinder 55, thereby achieving position locking of the closing plate 52. The external gas enters the interior of the air inlet bin 2 through the air inlet, and at the same time, the filter screen 10 realizes preliminary filtration of the external gas. The external gas enters the interior of the filter bin 1 through the air inlet pipe 8. At the same time, the spiral blade 9 effectively reduces the flow speed of the external gas and enters the interior of the filter bin 6 under the guidance of the air inlet pipe 8. Then the filter bin 6 and the folded filter cylinder 7 realize the filtration of the external gas, and the filtered gas enters the interior of the agricultural machinery engine through the outlet pipe 3.

[0033] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An agricultural machinery air filter, comprising a filter chamber (1), the upper end of the filter chamber (1) being threadedly connected to an air intake chamber (2), a filter chamber (6) being arranged inside the filter chamber (1), and characterized in that: It also includes a fixing mechanism (4) and an air intake opening and closing mechanism (5); The fixing mechanism (4) comprises a sliding column (41), a driving block (43) and a sliding rod (44); the sliding column (41) is slidably connected to the lower end of the filter bin (1); the upper end of the sliding column (41) is fixedly connected to the driving block (43); the lower end of the filter bin (1) is fixedly connected to evenly distributed supports; the middle of the supports are slidably connected to sliding rods (44); the ends of the sliding rods (44) close to the center of the filter bin (1) are fixedly connected to support blocks; the support blocks are installed in cooperation with the driving block (43); the ends of the sliding rods (44) away from the center of the filter bin (1) are fixedly connected to arc plates; the arc plates are tightly fitted to the inner wall of the filter bin (6); the bottom wall of the filter bin (1) is fixedly connected to a fixing ring (11); the inner wall of the fixing ring (11) is tightly fitted to the lower end of the outer surface of the filter bin (6); Air intake opening and closing mechanism (5): It is arranged at the upper end of the air intake bin (5).

2. The agricultural machinery air filter according to claim 1, characterized in that: The fixing mechanism (4) further comprises a spring 1 (42) and a spring 2 (46), wherein the spring 1 (42) is fixedly connected between the lower surface of the driving block (43) and the bottom wall of the filter bin (1), the spring 1 (42) is movably sleeved on the outer surface of the sliding column (41), the spring 2 (46) is fixedly connected between the arc plate and the horizontally radially adjacent supports, and the spring 2 (46) is movably sleeved on the outer surface of the horizontally radially adjacent sliding rods (44).

3. The agricultural machinery air filter according to claim 1, characterized in that: The fixing mechanism (4) further comprises a driving handle (45), a fixing cylinder (47) and a limiting plate (48); the driving handle (45) is evenly fixedly connected to the lower end of the sliding column (41); a through hole is arranged inside the driving handle (45); the fixing cylinder (47) is fixedly connected to the middle part of the lower surface of the filter bin (1); the lower end of the inner wall of the fixing cylinder (47) is fixedly connected to the limiting plate (48); the upper end of the limiting plate (48) is provided with a rib groove 1; the lower end of the driving handle (45) is fixedly connected to a rib 1, and the rib 1 is mounted in cooperation with a rib groove 1 adjacent to a horizontal radial direction.

4. The agricultural machinery air filter according to claim 1, characterized in that: The upper and lower ends of the driving block (43) are both conical surfaces, and the end of the support block close to the center of the filter bin (1) is provided with an arc surface.

5. The agricultural machinery air filter according to claim 1, characterized in that: The air intake opening and closing mechanism (5) further comprises a slide groove (51), a closing plate (52), a rotating disk (53) and a rotating shaft (54); the slide groove (51) is arranged on the bottom wall of the air intake bin (2); the interior of the slide groove (51) is slidably connected with the evenly distributed closing plates (52); three evenly distributed air intake ports are arranged in the middle of the air intake bin (2); the upper ends of the three closing plates (52) are fixedly connected to the lower end of the rotating disk (53); the rotating shaft (54) is rotatably connected to the upper end of the air intake bin (2); and the lower end of the rotating shaft (54) is fixedly connected to the lower end of the rotating disk (53).

6. The agricultural machinery air filter according to claim 5, characterized in that: The air intake opening and closing mechanism (5) further comprises a driving cylinder (55) and a rib plate (56), wherein the driving cylinder (55) is movably sleeved on the upper end of the outer surface of the rotating shaft (54), and two symmetrically distributed rib grooves are arranged inside the driving cylinder (55), and two symmetrically distributed ribs are fixedly connected to the upper end of the outer surface of the rotating shaft (54), and the two ribs are slidably connected to the two rib grooves adjacent to each other in the horizontal radial direction, and the upper end of the outer surface of the driving cylinder (55) is fixedly connected to the rib plate (56).

7. The agricultural machinery air filter according to claim 6, characterized in that: The air intake opening and closing mechanism (5) also includes a locking column (57), which is evenly fixedly connected to the center position of the upper surface of the air intake bin (2), and a sliding mouth is provided at one end of the rib plate (56) away from the center of the driving cylinder (55), and the interior of the sliding mouth is matched with the outer surface of the locking column (57) adjacent to the horizontal radial direction.

8. The agricultural machinery air filter according to claim 5, characterized in that: A folded filter cartridge (7) is provided inside the filter bin (6), a filter screen (10) is fixedly connected inside the air inlet, and the lower surface of the air inlet bin (2) is tightly fitted with the upper surface of the filter bin (6).

9. The agricultural machinery air filter according to claim 1, characterized in that: An air intake pipe (8) is provided at the lower end of the air intake bin (2), a spiral sheet (9) is fixedly connected to the inner wall of the air intake pipe (8), and the air intake pipe (8) is located inside the filter bin (6).

10. The agricultural machinery air filter according to claim 1, characterized in that: The lower end of the filter bin (1) is provided with an air outlet pipe (3), the lower end of the filter bin (1) is fixedly connected with a mounting cylinder (12), and the lower end of the mounting cylinder (12) is provided with evenly distributed mounting holes.

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