Engine air filter assembly

Abstract

The utility model provides an air filter assembly of an engine, which is applied to the technical field of air filters, and is characterized in that the air filter assembly comprises an air filter shell and oil bath type filter structures, and a plurality of oil bath type filter structures are sequentially communicated and arranged in the air filter shell to realize multi-stage oil bath type filtration; the oil bath type filtering structure located at the head end is communicated with an air inlet in the air filter shell; the filter type filter structure is arranged in the air filter shell, one side of the filter type filter structure is communicated with the oil bath type filter structure at the tail end, and the other side of the filter type filter structure is communicated with the exhaust port; the engine air filter assembly has the technical effects that five-stage filtering of air is realized, and the filtering efficiency of the engine air filter assembly is greatly improved, so that the service life of an engine is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, in particular to an engine air filter assembly. Background Art

[0002] An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines, external combustion engines, jet engines, electric motors, etc. Among them, internal combustion engines usually convert chemical energy into mechanical energy by burning fuel inside the machine and directly converting the heat energy released into power.

[0003] At present, a Chinese utility model with publication number CN 203214200 U discloses an oil bath type three-stage air filter for a diesel engine, comprising a lower shell and an upper shell, wherein an air intake pipe connected to the engine air intake passage is connected to the side of the lower shell, a centrifugal blade window surrounding the circumference of the lower shell is provided at the junction of the upper shell and the lower shell, a tangential oblique window for separating larger dust particles is provided on the outer side of the upper shell, a central air pipe is provided between the inner cavity of the upper shell and the inner cavity of the lower shell, an extension of the centrifugal blade window to the center of the lower shell is connected to the outer wall of the upper end of the central air pipe, an oil separator is provided at the bottom of the inner cavity of the lower shell below the central air pipe, and a filter element made of polyester is provided between the outer wall of the lower end of the central air pipe and the inner wall of the lower shell;

[0004] Currently, there is no effective air filtration structure in the existing internal combustion engine intake system, which results in insufficient filtration of the air mixed with the fuel for combustion and the presence of impurities, which in turn causes the pistons, piston rings, valves and other moving parts in the engine to wear and fail due to impurities, directly affecting the reliability of the engine operation. Utility Model Content

[0005] The utility model aims to provide an engine air filter assembly, which has the advantages of realizing multi-stage filtration of air, improving the air and dust separation effect, and thus extending the service life of the engine.

[0006] In order to achieve the above purpose and other related purposes, the utility model provides the following technical solutions:

[0007] An engine air filter assembly includes an air filter housing,

[0008] An oil bath filter structure, wherein a plurality of the oil bath filter structures are sequentially connected and arranged in the air filter housing to achieve multi-stage oil bath filtration; the oil bath filter structure at the head end is connected to the air inlet on the air filter housing;

[0009] A filter-type filter structure is arranged in the air filter housing, one side of the filter-type filter structure is connected to the oil bath filter structure at the tail end, and the other side of the filter-type filter structure is connected to the exhaust port.

[0010] In one embodiment of the present utility model, the air filter housing includes an air filter body and an air filter seat fixed on the air filter body; the exhaust port is arranged on the air filter seat;

[0011] The air filter body is provided with a first oil bath cavity, a second oil bath cavity and a connecting bridge cavity communicating with the first oil bath cavity; the first oil bath cavity is communicated with the air inlet;

[0012] The air filter seat is provided with a mounting cavity communicated with the exhaust port;

[0013] A front air outlet communicating with the installation cavity is provided on the side wall of the second oil bath cavity.

[0014] In one embodiment of the present invention, the filter structure is filter paper, and the filter paper is clamped in the installation cavity.

[0015] In one embodiment of the present invention, two oil bath filter structures are included;

[0016] The first oil bath type filter structure is arranged in the first oil bath cavity, and the second oil bath type filter structure is arranged in the second oil bath cavity.

[0017] In one embodiment of the utility model, the first oil bath filter structure includes a first center tube fixed on the air filter body and extending to the outside of the air filter body at one end and extending to the inside of the first oil bath cavity at the other end, a first filter element surrounding the first center tube and clamped in the first oil bath cavity, and a first oil pool detachably connected to the bottom of the air filter body and forming the first oil bath cavity with the air filter body;

[0018] The bottom of the first central tube is located in the first oil pool, and the first filter element is arranged at a height higher than the liquid level in the first oil pool.

[0019] In one embodiment of the utility model, a mounting plate is fixed on the top of the first central tube, the air inlet is opened on the mounting plate and communicated with the first central tube; a top cap covering the air inlet is fixed on the mounting plate.

[0020] In one embodiment of the utility model, the second oil bath type filter structure includes a second central tube fixed in the second oil bath cavity, a second filter element surrounding the second central tube and clamped in the second oil bath cavity, and a second oil pool detachably connected to the bottom of the air filter body and forming the second oil bath cavity with the air filter body;

[0021] The second central tube is communicated with the connecting bridge cavity and the bottom of the second central tube is located in the second oil pool. The second filter element is arranged at a height higher than the liquid level in the second oil pool.

[0022] In an embodiment of the present invention, the first oil pool and the second oil pool are both threadedly connected to the air filter body.

[0023] As described above, the engine air filter assembly of the utility model has the following beneficial effects:

[0024] 1. The first oil bath filter structure, the second oil bath filter structure and the filter filter structure are connected in sequence. The first oil bath filter structure includes a first oil pool and a first filter element. The second oil bath filter structure includes a second oil pool and a second filter element. The filter filter structure is a filter paper. After the air enters and exits the air filter housing from the air inlet, it is filtered through five stages and then discharged from the exhaust port, thereby improving the air and dust separation effect.

[0025] 2. Realize multi-stage filtration of air, greatly improve the filtration efficiency of the engine air filter assembly, thereby extending the service life of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0027] Figure 2 is a cross-sectional view of an embodiment of the utility model from a first viewing angle;

[0028] Figure 3 is a cross-sectional view of a second viewing angle of an embodiment of the utility model;

[0029] Figure 4 It is a bottom view of the top cap of the utility model embodiment.

[0030] Figure numerals: 1. air filter housing; 2. air inlet; 3. exhaust port; 101. air filter body; 102. air filter seat; 6. first oil bath chamber; 7. second oil bath chamber; 8. connecting bridge chamber; 9. installation chamber; 10. front air outlet; 11. filter paper; 13. first oil bath filter structure; 131. first center tube; 132. first filter element; 133. first oil pool; 17. mounting plate; 18. top cap; 19. second oil bath filter structure; 191. second center tube; 192. second filter element; 193. second oil pool; 23. first mounting bracket; 24. second mounting bracket. DETAILED DESCRIPTION

[0031] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0032] See also Figures 1 to 4It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0033] See also Figure 1 and Figure 2 The utility model provides an engine air filter assembly, including an air filter housing 1,

[0034] An oil bath filter structure, wherein a plurality of oil bath filter structures are sequentially connected and arranged in the air filter housing 1 to realize multi-stage oil bath filtration; the oil bath filter structure at the head end is connected to the air inlet 2 on the air filter housing 1;

[0035] The filter type filter structure is arranged in the air filter housing 1 , one side of the filter type filter structure is connected with the oil bath type filter structure at the tail end, and the other side is connected with the exhaust port 3 .

[0036] See also Figure 1 and Figure 3 The air filter housing 1 includes an air filter body 101 and an air filter seat 102 fixed on the side wall of the air filter body 101; the exhaust port 3 is opened on the side wall of the air filter seat 102, and the air filter seat 102 is provided with a mounting cavity 9 connected with the exhaust port 3; the filter-type filtering structure in this embodiment is a filter paper 11, and the filter paper 11 is clamped in the mounting cavity 9; wherein the air filter seat 102 is bolted to the air filter body 101, so that the air filter seat 102 is easy to remove from the air filter body 101 and then replace the filter paper 11, which is convenient for maintenance.

[0037] See also Figure 1 , Figure 2 and Figure 4 The air filter body 101 is provided with a first oil bath chamber 6, a second oil bath chamber 7 and a connecting bridge chamber 8 connected with the first oil bath chamber 6; a front air outlet 10 connected with the mounting chamber 9 is provided on the side wall of the second oil bath chamber 7;

[0038] This embodiment includes two oil bath filter structures connected in sequence, the first oil bath filter structure 13 is arranged in the first oil bath chamber 6, and the second oil bath filter structure 19 is arranged in the second oil bath chamber 7;

[0039] The first oil bath type filtering structure 13 comprises a first central tube 131, a first filter element 132 and a first oil pool 133; the first central tube 131 is welded and fixed on the air filter body 101, and one end of the first central tube 131 extends outside the air filter body 101, and the other end extends into the first oil bath cavity 6; a first mounting frame 23 sleeved on the first central tube 131 is bolted and fixed in the first oil bath cavity 6, the first filter element 132 is clamped on the first mounting frame 23, and the first filter element 132 is arranged around the first central tube 131; The first oil pool 133 is detachably connected to the bottom of the air filter body 101 and forms a first oil bath chamber 6 with the air filter body 101; in this embodiment, the first oil pool 133 is threadedly connected to the air filter body 101, so that the first oil pool 133 can be easily removed from the air filter body 101 to replace the first filter element 132 and the oil in the first oil pool 133; the bottom of the first central tube 131 is located in the first oil pool 133, and the setting height of the first filter element 132 is higher than the liquid level in the first oil pool 133;

[0040] A mounting plate 17 is welded and fixed on the top of the first central tube 131. The mounting plate 17 is provided with a plurality of hollow holes connected with the first central tube 131. The hollow holes serve as air inlets 2. A top cap 18 is bolted to the mounting plate 17. The top cap 18 is covered on the air inlet to prevent foreign matter from falling into the first central tube 131 from the air inlet and affecting the filtering effect.

[0041] See also Figure 1 and Figure 2 The second oil bath filter structure 19 includes a second central tube 191, a second filter element 192 and a second oil pool 193; the second central tube 191 is welded and fixed in the second oil bath cavity 7; a second mounting frame 24 sleeved on the second central tube 191 is bolted and fixed in the second oil bath cavity 7, the second filter element 192 is clamped on the second mounting frame 24, and the second filter element 192 is arranged around the second central tube 191; the second oil pool 193 is detachably connected to the bottom of the air filter body 101 and forms the second oil bath cavity 7 with the air filter body 101; in this embodiment, the second oil pool 193 is threadedly connected to the air filter body 101, so that the second oil pool 193 can be removed from the air filter body 101 to replace the oil in the second filter element 192 and the second oil pool 193;

[0042] The top of the second central tube 191 is connected to the connecting bridge cavity 8 and the bottom of the second central tube 191 is located in the second oil pool 193 . The second filter element 192 is arranged at a height higher than the liquid level in the second oil pool 193 .

[0043] Brief description of the use process: air enters the air filter housing 1 through the air inlet 2 and moves downward along the first central tube 131 into the first oil pool 133. After a part of the large particles of impurities in the air are adhered to the oil, the air turns 180° and enters the first filter element 132. The first filter element 132 further filters the fine impurity particles in the air and then enters the first oil bath chamber 6. The air enters the connecting bridge chamber 8 along the first oil bath chamber 6, and then enters the second central tube 191 through the connecting bridge chamber 8, and moves downward along the second central tube 191 to the second oil pool 193. The second oil pool 193 further filters the impurities in the air. The filtered air passes through the second filter element 192 after a 180° turn. The second filter element 192 further filters the impurities in the air. After the filtered air passes through the second oil bath chamber 7, it is discharged from the front air outlet 10 and enters the installation chamber 9. Finally, it is filtered by the filter paper 11 in the installation chamber 9 and discharged from the exhaust port 3.

[0044] In summary, the utility model realizes five-stage filtration of air, greatly improves the filtration efficiency of the engine air filter assembly, and thus prolongs the service life of the engine. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An engine air filter assembly, characterized in that: It comprises an air filter housing (1), An oil bath filter structure, wherein a plurality of the oil bath filter structures are sequentially connected and arranged in the air filter housing (1) to achieve multi-stage oil bath filtration; the oil bath filter structure located at the head end is connected to the air inlet (2) on the air filter housing (1); A filter-type filter structure is arranged in the air filter housing (1), one side of the filter-type filter structure is connected to the oil bath filter structure at the tail end, and the other side of the filter-type filter structure is connected to the exhaust port (3).

2. The engine air filter assembly according to claim 1, characterized in that: The air filter housing (1) comprises an air filter body (101) and an air filter seat (102) fixed on the air filter body (101); the exhaust port (3) is arranged on the air filter seat (102); The air filter body (101) is provided with a first oil bath chamber (6), a second oil bath chamber (7) and a connecting bridge chamber (8) communicating with the first oil bath chamber (6); The air filter seat (102) is provided with a mounting cavity (9) which is in communication with the exhaust port (3); A front air outlet (10) communicating with the installation cavity (9) is provided on the side wall of the second oil bath cavity (7).

3. The engine air filter assembly according to claim 2, characterized in that: The filtering structure is filter paper (11), and the filter paper (11) is clamped in the installation cavity (9).

4. The engine air filter assembly according to claim 2, characterized in that: It includes two oil bath type filtering structures; A first oil bath type filtering structure (13) is arranged in the first oil bath cavity (6), and a second oil bath type filtering structure (19) is arranged in the second oil bath cavity (7).

5. The engine air filter assembly according to claim 4, characterized in that: The first oil bath filter structure (13) comprises a first central tube (131) fixed on the air filter body (101) and having one end extending outside the air filter body (101) and the other end extending into the first oil bath cavity (6), a first filter element (132) surrounding the first central tube (131) and clamped in the first oil bath cavity (6), and a first oil pool (133) detachably connected to the bottom of the air filter body (101) and forming the first oil bath cavity (6) with the air filter body (101); The bottom of the first central tube (131) is located in the first oil pool (133), and the first filter element (132) is arranged at a height higher than the liquid level in the first oil pool (133).

6. The engine air filter assembly according to claim 5, characterized in that: A mounting plate (17) is fixed on the top of the first central tube (131); the air inlet (2) is opened on the mounting plate (17) and is in communication with the first central tube (131); and a top cap (18) covering the air inlet (2) is fixed on the mounting plate (17).

7. The engine air filter assembly according to claim 5, characterized in that: The second oil bath filter structure (19) comprises a second central tube (191) fixed in the second oil bath cavity (7), a second filter element (192) surrounding the second central tube (191) and clamped in the second oil bath cavity (7), and a second oil pool (193) detachably connected to the bottom of the air filter body (101) and forming the second oil bath cavity (7) with the air filter body (101); The second central tube (191) is in communication with the connecting bridge cavity (8) and the bottom of the second central tube (191) is located in the second oil pool (193). The second filter element (192) is arranged at a height higher than the liquid level in the second oil pool (193).

8. The engine air filter assembly according to claim 7, characterized in that: The first oil pool (133) and the second oil pool (193) are both threadedly connected to the air filter body (101).

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