Air filter adopting coaxial core assembly structure

Abstract

The utility model discloses an air filter adopting a coaxial core assembly structure, which comprises a filter shell, an air inlet pipe, an air inlet cap assembly, a coarse filter element, a fine filter element and an air outlet pipe, the coarse filter element is arranged in the filter shell, the fine filter element is arranged in the coarse filter element, and the air outlet pipe is arranged in the fine filter element. An air inlet pipe and an air outlet pipe are connected to the filter shell, the outlet end of the fine filter element is communicated with the air outlet pipe, the upper portion of the air inlet pipe is connected with an air inlet cap assembly, a center bolt penetrates through the centers of the filter shell, the coarse filter element and the fine filter element, and the center bolt is fixedly connected with a rear end cover through a butterfly nut. And a coarse filter screen front end cover of the coarse filter element and a fine filter screen front end cover of the fine filter element are respectively fixed with the central bolt through butterfly nuts. The filter shell, the coarse filter element and the fine filter element are coaxially and fixedly installed through the center bolt, rapid assembly can be achieved through the center bolt and the butterfly nut, and the uniformity of products is better.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, in particular to an air filter adopting a coaxial core assembly structure. Background Art

[0002] Air filters can filter dust particles in the air and are often used in dusty environments. Most existing air filters have double-layer filter elements that can filter dust particles of different sizes separately. However, the double-layer filter element structure is inconvenient to assemble and cannot be assembled quickly. Utility Model Content

[0003] In view of the above problems, the present invention aims to provide an air filter adopting a coaxial core assembly structure.

[0004] The technical problem solved by the present utility model can be achieved by adopting the following technical solutions: an air filter adopting a coaxial core assembly structure, comprising a filter housing, an air intake pipe, an air intake cap assembly, a coarse filter element, a fine filter element and an air outlet pipe, a coarse filter element is arranged inside the filter housing, a fine filter element is arranged inside the coarse filter element, an air intake pipe and an air outlet pipe are connected to the filter housing, an outlet end of the fine filter element is connected to the air outlet pipe, an air intake cap assembly is connected to the upper part of the air intake pipe, and the filter housing, the coarse filter element and the fine filter element are coaxially fixed and installed by a center bolt.

[0005] A central bolt is provided through the centers of the filter housing, coarse filter element, and fine filter element. A central bolt bracket is provided at the air outlet of the front end cover of the filter housing. One end of the central bolt is fixed to the central bolt bracket, and the other end is connected and fixed to the rear end cover through a butterfly nut. The front end cover of the coarse filter mesh of the coarse filter element and the front end cover of the fine filter mesh of the fine filter element are respectively fixed to the central bolt through butterfly nuts.

[0006] An intake connecting pipe is provided at the lower end of the intake pipe, an intake pipe seat is provided on the filter housing, the intake connecting pipe is sleeved on the intake pipe seat, a clamp is provided outside the intake connecting pipe, and the intake connecting pipe and the intake pipe seat are fixedly connected by the clamp.

[0007] The air intake cap assembly includes an air intake cap head, an air intake cap, an air intake grille, an air intake cap cover and an air filter. The air intake cap head is provided with an air filter on the side, the air intake grille is provided on the upper part of the air intake cap head, the air intake grille is provided on the air intake cap, and the air intake cap cover is provided on the air intake cap.

[0008] The coarse filter element includes a coarse filter front end cover, a coarse filter rear end cover, a diamond mesh and a filter paper core. Two layers of diamond mesh are arranged between the coarse filter front end cover and the coarse filter rear end cover, a filter paper core is arranged between the two layers of diamond mesh, and a fine filter element is arranged on the inner side of the inner diamond mesh.

[0009] A flow deflector is provided at the front end of the front end cover of the coarse filter, which is fixed in the shell. A foam gasket is provided between the front end cover of the coarse filter and the front end cover of the filter shell.

[0010] The fine filter element includes a fine filter front end cover, a fine filter frame, a fine filter cloth and a fine filter rear end cover. The two ends of the fine filter frame are respectively connected to the fine filter front end cover and the fine filter rear end cover. The fine filter frame is provided with a fine filter cloth. The fine filter front end cover is provided with a through hole connected to the air outlet pipe inlet, and a sealing gasket is provided between the fine filter front end cover and the front end cover.

[0011] The filter housing includes a front end cover, a housing and a rear end cover. The two ends of the housing are respectively connected to the front end cover and the rear end cover. A sealing ring is provided between the housing and the rear end cover. An air inlet pipe seat is provided on the upper part of the housing, and an air outlet pipe is connected to the front end cover.

[0012] A dust exhaust assembly is provided at the bottom of the rear end cover, and the dust exhaust assembly includes a dust exhaust pipe and a dust exhaust cover. The dust exhaust pipe is connected to the rear end cover, and a dust exhaust cover is provided at the pipe mouth of the dust exhaust pipe. The dust exhaust cover is connected to the dust exhaust pipe through a dust exhaust clamp.

[0013] The air outlet pipe is covered with a waterproof cover, and the outlet of the air outlet pipe faces downward.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the filter housing, coarse filter element and fine filter element of the utility model are coaxially arranged, and the filter housing, coarse filter element and fine filter element can be quickly assembled through the center bolt and butterfly nut, the assembly is simple and convenient, and the uniformity is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a structural diagram of the utility model;

[0017] Figure 3 It is the AA section view;

[0018] In the figure: 1-intake cap, 2-intake cap, 3-intake grille, 4-air filter, 5-intake cap head, 6-intake pipe, 7-intake connecting pipe, 8-hoop, 9-intake pipe seat, 10-front cover, 11-coarse filter front cover, 12-foam gasket, 13-sealing gasket, 14-fine filter front cover, 15-center bolt, 16-center bolt bracket, 17-outlet pipe, 18-waterproof cover, 19-fine filter cloth, 20-fine filter frame, 21-air deflector, 22-diamond net, 23-filter paper core, 24-dust cover, 25-dust pipe, 26-dust clamp, 27-housing, 28-sealing ring, 29-rear cover, 30-fine filter rear cover, 31-coarse filter rear cover, 32-butterfly nut, 33-bolt. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0020] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0021] Combined with attachment Figures 1 to 3 As shown, this embodiment discloses an air filter using a coaxial core assembly structure, including a filter housing, an air inlet pipe 6, an air inlet cap assembly, a coarse filter element, a fine filter element, and an outlet pipe 17. The coarse filter element is disposed within the filter housing, and the fine filter element is disposed within the coarse filter element. The filter housing is connected to the air inlet pipe 6 and the outlet pipe 17. The outlet end of the fine filter element is connected to the outlet pipe 17. The upper portion of the air inlet pipe 6 is connected to the air inlet cap assembly. The filter housing, coarse filter element, and fine filter element are coaxially fixed by a central bolt 15. The central bolt 15 is penetrated through the center of the filter housing, coarse filter element, and fine filter element. A central bolt bracket 16 is provided at the outlet pipe opening of the front cover 10 of the filter housing. One end of the central bolt 15 is fixed to the central bolt bracket 16, and the other end is connected to the rear cover 29 via a butterfly nut. The coarse filter front cover 11 and the fine filter front cover 14 are respectively fixed to the central bolt 15 via butterfly nuts.

[0022] An intake connecting pipe 7 is provided at the lower end of the intake pipe 6, and an intake pipe seat 9 is provided on the shell 27. The intake connecting pipe 7 is sleeved on the intake pipe seat 9, and a clamp 8 is provided on the outside of the intake connecting pipe 7. The intake connecting pipe 7 is fixedly connected to the intake pipe seat 9 through the clamp 8.

[0023] The air intake cap assembly includes an air intake cap head 5, an air intake cap 2, an air intake grille 3, an air intake cap cover 1 and an air filter 4. The air intake cap head 5 is provided with an air filter 4 on the side, the air intake grille 3 is provided on the upper part of the air intake cap head 5, the air intake grille 3 is provided on the air intake cap 2, and the air intake cap cover 1 is provided on the air intake cap 2.

[0024] The coarse filter element includes a coarse filter front cover 11, a coarse filter rear cover 31, a diamond mesh 22, and a filter paper core 23. Two layers of steel diamond mesh 22 are positioned between the coarse filter front cover 11 and the coarse filter rear cover 31. A filter paper core 23 is positioned between the two layers of diamond mesh 22. A fine filter element is positioned within the inner diamond mesh. A deflector 21 is positioned at the front end of the coarse filter front cover 11, which is secured within the housing 27. A foam gasket 12 is positioned between the coarse filter front cover 11 and the front cover 10.

[0025] The fine filter element includes a fine filter front end cover 14, a fine filter frame 20, a fine filter cloth 19 and a fine filter rear end cover 30. The two ends of the fine filter frame 20 are respectively connected to the fine filter front end cover 14 and the fine filter rear end cover 30. The fine filter frame 20 is provided with a fine filter cloth 19, and the fine filter cloth 19 is a soft velvet cloth. The fine filter front end cover 14 is provided with a through hole connected to the inlet of the air outlet pipe 17. A seal is provided between the fine filter front end cover 14 and the coarse filter front end cover 11, and a sealing gasket 13 is provided between the fine filter front end cover 14 and the front end cover 10.

[0026] The filter housing includes a front end cover 10, a housing 27 and a rear end cover 29. The two ends of the housing 27 are respectively connected to the front end cover 10 and the rear end cover 29. A sealing ring 28 is provided between the housing 27 and the rear end cover 29. An air inlet pipe seat 9 is provided on the upper part of the housing 27, and an air outlet pipe 17 is connected to the front end cover 10.

[0027] A dust exhaust assembly is provided at the bottom of the rear end cover 29, comprising a dust exhaust pipe 25 and a dust exhaust cover 24. The dust exhaust pipe 25 is connected to the rear end cover 29, and a dust exhaust cover 24 is provided at the mouth of the dust exhaust pipe 25. The dust exhaust cover 24 is connected to the dust exhaust pipe 25 via a dust exhaust clamp 26. A waterproof cover 18 is provided on the air outlet pipe 17, and the outlet of the air outlet pipe 17 faces downward.

[0028] During use, air enters the intake pipe 6 through the air intake grille 3 and the air filter 4, undergoes coarse and fine filtration in the filter housing, and is discharged from the outlet pipe 17 to remove dust from the air. The filter housing, coarse filter element, and fine filter element of the utility model are coaxially arranged. The filter housing, coarse filter element, and fine filter element are fast assembled by tightening the butterfly nut with the center bolt 15, which is simple and convenient to assemble and has better uniformity.

[0029] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent change or modification made to the above embodiment based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An air filter with a coaxial core assembly structure, comprising a filter housing, an air inlet pipe (6), an air inlet cap assembly, a coarse filter element, a fine filter element and an air outlet pipe (17), characterized in that: A coarse filter element is provided inside the filter housing, and a fine filter element is provided inside the coarse filter element. An air inlet pipe (6) and an air outlet pipe (17) are connected to the filter housing, and an outlet end of the fine filter element is connected to the air outlet pipe (17). An air inlet cap assembly is connected to the upper part of the air inlet pipe (6). The filter housing, the coarse filter element, and the fine filter element are coaxially fixedly installed via a central bolt (15).

2. The air filter with a coaxial core assembly structure according to claim 1, characterized in that: A central bolt (15) is provided through the centers of the filter housing, the coarse filter element, and the fine filter element. A central bolt bracket (16) is provided at the air outlet of the front end cover (10) of the filter housing. One end of the central bolt (15) is fixed to the central bolt bracket (16), and the other end is connected and fixed to the rear end cover (29) via a butterfly nut. The coarse filter front end cover (11) of the coarse filter element and the fine filter front end cover (14) of the fine filter element are respectively fixed to the central bolt (15) via butterfly nuts.

3. The air filter with a coaxial core assembly structure according to claim 1, characterized in that: An air intake connecting pipe (7) is provided at the lower end of the air intake pipe (6), an air intake pipe seat (9) is provided on the filter housing, the air intake connecting pipe (7) is sleeved on the air intake pipe seat (9), and a clamp (8) is provided outside the air intake connecting pipe (7), and the air intake connecting pipe (7) and the air intake pipe seat (9) are fixedly connected by the clamp (8).

4. The air filter with a coaxial core assembly structure according to claim 1, characterized in that: The air intake cap assembly comprises an air intake cap head (5), an air intake cap (2), an air intake grille (3), an air intake cap cover (1) and an air filter (4); an air filter (4) is provided on the side of the air intake cap head (5); an air intake grille (3) is provided on the upper part of the air intake cap head (5); an air intake cap (2) is provided on the air intake grille (3); and an air intake cap cover (1) is provided on the air intake cap (2).

5. The air filter with a coaxial core assembly structure according to claim 1, characterized in that: The coarse filter element comprises a coarse filter front end cover (11), a coarse filter rear end cover (31), a diamond mesh (22) and a filter paper core (23); two layers of diamond mesh (22) are arranged between the coarse filter front end cover (11) and the coarse filter rear end cover (31); a filter paper core (23) is arranged between the two layers of diamond mesh (22); and a fine filter element is arranged inside the inner diamond mesh.

6. The air filter using a coaxial core assembly structure according to claim 5, characterized in that: A flow deflector (21) is provided at the front end of the coarse filter front end cover (11), and the flow deflector (21) is fixed in the housing (27). A foam gasket (12) is provided between the coarse filter front end cover (11) and the front end cover (10) of the filter housing.

7. The air filter using a coaxial core assembly structure according to claim 1, characterized in that: The fine filter element comprises a fine filter front end cover (14), a fine filter frame (20), a fine filter cloth (19) and a fine filter rear end cover (30), the two ends of the fine filter frame (20) are respectively connected to the fine filter front end cover (14) and the fine filter rear end cover (30), the fine filter frame (20) is provided with a fine filter cloth (19), the fine filter front end cover (14) is provided with a through hole connected to the air outlet pipe inlet, and a sealing gasket (13) is provided between the fine filter front end cover (14) and the front end cover (10).

8. The air filter using a coaxial core assembly structure according to claim 1, characterized in that: The filter housing comprises a front end cover (10), a housing (27) and a rear end cover (29), the two ends of the housing (27) being connected to the front end cover (10) and the rear end cover (29), respectively, a sealing ring (28) being provided between the housing (27) and the rear end cover (29), an air inlet pipe seat (9) being provided on the upper portion of the housing (27), and an air outlet pipe (17) being connected to the front end cover (10).

9. The air filter using a coaxial core assembly structure according to claim 8, characterized in that: A dust exhaust assembly is provided at the bottom of the rear end cover (29), and the dust exhaust assembly comprises a dust exhaust pipe (25) and a dust exhaust cover (24). The dust exhaust pipe (25) is communicated with the rear end cover (29), and a dust exhaust cover (24) is provided at the pipe mouth of the dust exhaust pipe (25). The dust exhaust cover (24) and the dust exhaust pipe (25) are connected via a dust exhaust clamp (26).

10. The air filter using a coaxial core assembly structure according to claim 1, characterized in that: The air outlet pipe (17) is covered with a waterproof cover (18), and the outlet of the air outlet pipe (17) faces downward.

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