Air filter

Abstract

The utility model relates to an air filter and relates to the technical field of filters, the air filter comprises a shell, a filter element, a connecting cover and a compression spring, a cavity is formed in the shell, an air inlet communicated with the cavity is formed in one end of the shell, and an air outlet communicated with the cavity is formed in the end, away from the air inlet, of the shell; the filter element is installed in the cavity, the connecting cover is installed at the end, close to the air outlet, of the filter element, and the compression spring is arranged between the connecting cover and the bottom of the cavity. The method has the effect of reducing the risk of reducing the filtering efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of filters, and in particular to an air filter. Background Art

[0002] The air filter is an essential component in front of the cylinder of a motor vehicle. It filters particulate impurities in the air, prevents the particulate impurities from damaging the cylinder and extends the service life of the cylinder.

[0003] In the prior art, there is an air filter comprising a shell and a filter element. The shell has an inner cavity, an air inlet is opened at one end of the shell, and an air outlet is opened at the other end of the shell. The filter element is installed in the inner cavity. Gas enters from the air inlet and is discharged from the air outlet after being filtered by the filter element.

[0004] With respect to the above-mentioned related technologies, the inventor found that when a motor vehicle is in use, vibration occurs, which causes the filter to vibrate and the filter element to shift, resulting in the filter holes of the filter element being blocked, thereby reducing the efficiency of the filter. Utility Model Content

[0005] In order to reduce the risk of reduced filtering efficiency, the present application provides an air filter.

[0006] The air filter provided in this application adopts the following technical solution:

[0007] An air filter comprises a shell, a filter element, a connecting cover and a compression spring, wherein the shell has a cavity inside, an air inlet connected to the cavity is opened at one end of the shell, an air outlet connected to the cavity is opened at one end of the shell away from the air inlet, the filter element is installed in the cavity, the connecting cover is installed at one end of the filter element close to the air outlet, and the compression spring is arranged between the connecting cover and the bottom of the cavity.

[0008] Through the above technical solution, the compression spring squeezes the connecting cover to fix the connecting cover, thereby reducing the risk of the filter element being offset, thereby reducing the risk of the filter holes being blocked, and further reducing the risk of reduced filtration efficiency.

[0009] Optionally, the connecting cover is provided with an embedding groove near one end of the compression spring, and the shell is provided with an abutment groove at the bottom of the cavity, one end of the compression spring is inserted into the embedding groove, and the other end of the compression spring is inserted into the abutment groove.

[0010] Through the above technical solution, the embedded groove and the abutment groove limit the compression spring, reducing the risk of the compression spring being offset, making the filter element more stably fixed, thereby reducing the risk of reduced filtration efficiency.

[0011] Optionally, the outer shell includes a bottom cover, a shell and an end cover, the bottom cover and the end cover are respectively threadedly connected to two sides of the shell, the air inlet is arranged on the bottom cover, and the air outlet is arranged on the end cover.

[0012] Through the above technical solution, when the filter element needs to be replaced after being used for a long time, the bottom cover or the end cover can be screwed off and the filter element can be taken out for replacement, which facilitates the replacement of the filter element.

[0013] Optionally, a positioning column is provided at one end of the bottom cover close to the filter element, and the filter element is inserted into the outer peripheral side of the positioning column.

[0014] Through the above technical solution, the positioning column can position the filter element, making the filter element more stably fixed, reducing the risk of the filter element shifting, and thus reducing the risk of reduced filtration efficiency.

[0015] Optionally, a first sealing ring is provided at one end of the bottom cover close to the shell, and a second sealing ring is provided at one end of the end cover close to the shell.

[0016] Through the above technical solution, the first sealing ring seals the gap between the bottom cover and the shell to reduce the risk of gas leakage, and the second sealing ring seals the gap between the end cover and the shell to reduce the risk of gas leakage.

[0017] Optionally, the filter element is corrugated filter paper.

[0018] Through the above technical solution, the filtering accuracy, flow rate and noise reduction effect can be changed by changing the specifications of the corrugated paper.

[0019] The beneficial effects of the utility model are as follows: the connection cover is squeezed by the compression spring, thereby fixing the filter element, reducing the risk of the filter element shifting, thereby reducing the risk of reduced filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of the air filter in this application.

[0021] Explanation of the reference numerals: 1. outer shell; 11. bottom cover; 111. air inlet; 112. first sealing ring; 12. end cover; 121. air outlet; 122. second sealing ring; 13. shell; 131. cavity; 1311. abutment groove; 1312. positioning column; 2. filter element; 3. connecting cover; 31. embedding groove; 4. compression spring. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1 This application is described in further detail.

[0023] The embodiment of the present application discloses an air filter.

[0024] Reference Figure 1 The air filter includes a shell 1, a filter element 2, a connecting cover 3 and a compression spring 4. The shell 1 has a cavity 131 inside, one end of the shell 1 is provided with an air inlet 111 which is interconnected with the cavity 131, and the end of the shell 1 away from the air inlet 111 is provided with an air outlet 121 which is interconnected with the cavity 131. The filter element 2 is installed in the cavity 131, the connecting cover 3 is installed at one end of the filter element 2 close to the air outlet 121, and the compression spring 4 is arranged between the connecting cover 3 and the bottom of the cavity 131.

[0025] The compression spring 4 squeezes the connection cover 3 to fix the connection cover 3, thereby reducing the risk of the filter element 2 being offset, thereby reducing the risk of the filter holes being blocked, and further reducing the risk of reduced filtering efficiency.

[0026] An embedding groove 31 is formed at one end of the connecting cover 3 near the compression spring 4 , and an abutting groove 1311 is formed at the bottom of the cavity 131 of the housing 1 . One end of the compression spring 4 is inserted into the embedding groove 31 , and the other end of the compression spring 4 is inserted into the abutting groove 1311 .

[0027] The embedding groove 31 and the abutting groove 1311 limit the compression spring 4, thereby reducing the risk of the compression spring 4 being deflected, making the filter element 2 more stably fixed, thereby reducing the risk of reduced filtering efficiency.

[0028] The housing 1 includes a bottom cover 11 , a shell 13 and an end cover 12 . The bottom cover 11 and the end cover 12 are respectively threadedly connected to two sides of the shell 13 . The air inlet 111 is arranged on the bottom cover 11 , and the air outlet 121 is arranged on the end cover 12 .

[0029] When the filter element 2 needs to be replaced after being used for a long time, the bottom cover 11 or the end cover 12 can be screwed off, and the filter element 2 can be taken out for replacement, which facilitates the replacement of the filter element 2.

[0030] A positioning post 1312 is disposed at one end of the bottom cover 11 close to the filter element 2 , and the filter element 2 is plugged into the outer peripheral side of the positioning post 1312 .

[0031] The positioning column 1312 can position the filter element 2, making the filter element 2 more stably fixed, reducing the risk of the filter element 2 being offset, and thus reducing the risk of reduced filtering efficiency.

[0032] A first sealing ring 112 is disposed at one end of the bottom cover 11 close to the housing 13 , and a second sealing ring 122 is disposed at one end of the end cover 12 close to the housing 13 .

[0033] The first sealing ring 112 blocks the gap between the bottom cover 11 and the shell 13 to reduce the risk of gas leakage, and the second sealing ring 122 blocks the gap between the end cover 12 and the shell 13 to reduce the risk of gas leakage.

[0034] The filter element 2 is a corrugated filter paper.

[0035] The filtration accuracy, flow rate and noise reduction effect can be changed by changing the specifications of the corrugated paper.

[0036] The implementation principle of an air filter in an embodiment of the present application is: the compression spring 4 squeezes the connecting cover 3 to fix the connecting cover 3, thereby reducing the risk of the filter element 2 being offset, thereby reducing the risk of the filter holes being blocked, and further reducing the risk of reduced filtration efficiency.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An air filter, characterized in that: The invention comprises a housing (1), a filter element (2), a connecting cover (3) and a compression spring (4); the housing (1) has a cavity (131) inside; one end of the housing (1) is provided with an air inlet (111) which is in communication with the cavity (131); an end of the housing (1) which is away from the air inlet (111) is provided with an air outlet (121) which is in communication with the cavity (131); the filter element (2) is installed in the cavity (131); the connecting cover (3) is installed at one end of the filter element (2) which is close to the air outlet (121); and the compression spring (4) is arranged between the connecting cover (3) and the bottom of the cavity (131).

2. An air filter according to claim 1, characterized in that: An embedding groove (31) is formed at one end of the connection cover (3) near the compression spring (4), and an abutment groove (1311) is formed at the bottom of the cavity (131) of the housing (1); one end of the compression spring (4) is inserted into the embedding groove (31), and the other end of the compression spring (4) is inserted into the abutment groove (1311).

3. An air filter according to claim 1, characterized in that: The housing (1) comprises a bottom cover (11), a shell (13) and an end cover (12); the bottom cover (11) and the end cover (12) are respectively threadedly connected to two sides of the shell (13); the air inlet (111) is arranged on the bottom cover (11), and the air outlet (121) is arranged on the end cover (12).

4. An air filter according to claim 3, characterized in that: A positioning column (1312) is provided at one end of the bottom cover (11) close to the filter element (2), and the filter element (2) is plugged into the outer peripheral side of the positioning column (1312).

5. An air filter according to claim 3, characterized in that: A first sealing ring (112) is provided at one end of the bottom cover (11) close to the shell (13), and a second sealing ring (122) is provided at one end of the end cover (12) close to the shell (13).

6. An air filter according to claim 1, characterized in that: The filter element (2) is corrugated filter paper.

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