Air filter

Abstract

The air filter comprises a shell, an air inlet pipe, an air outlet pipe and a filter element, the shell is composed of an upper shell body and a lower shell body, the filter element is arranged in the upper shell body, the air inlet pipe and the air outlet pipe are arranged on the portion, above the filter element, of the side wall of the upper shell body, and the bottom end of the air inlet pipe extends into the lower shell body; the filter element comprises a cylinder I in threaded connection with the air inlet pipe and a cylinder II in threaded connection with the inner wall of the upper shell, an opening between the top end of the cylinder I and the top end of the cylinder II is connected through a circular ring I, air outlets are evenly formed in the circular ring I. A plurality of sets of annular filter bodies are arranged in a cavity formed by the cylinder I, the cylinder II and the circular ring I. A circular ring II for sealing the plurality of groups of filter bodies between the cylinder I and the cylinder II is also screwed on the air inlet pipe, air inlets staggered with the air outlets are uniformly formed in the side wall of the circular ring II, and a circle of thickening part for supporting the edge of the bottom of the circular ring II is arranged on the inner side wall of the lower shell in a surrounding manner. The device is simple in structure and convenient to use.

Description

Technical Field

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

[0002] The air filter is installed in front of the carburetor or the intake pipe, which plays a role in filtering dust and sand grains in the air, ensuring that sufficient and clean air enters the cylinder. After the air filter is used for a period of time, it needs to be disassembled to clean its interior. Especially for the filter element, it needs to be cleaned or replaced.

[0003] Currently, the air filters sold on the market are relatively difficult to disassemble, and the filter elements used generally cannot be disassembled. When cleaning them, only the surface can be patted externally, and it is very difficult to clean the interior, resulting in the frequent need to replace the filter element of the air filter. Therefore, there is an air filter with the patent number CN218151186U. When solving the above problems, the device has the following defects. For example, after disassembling the upper housing and the lower housing, the filter element inside is prone to lose its fixation and fall down, and at the same time, it cannot effectively ensure the stability of the filter element in the housing and the sealing between the filter element and the side wall of the housing. Summary of the Invention

[0004] The purpose of the present invention is to provide an air filter.

[0005] The technical problems of the present invention are mainly solved by the following technical solutions:

[0006] An air filter includes a housing, an intake pipe, an outlet pipe and a filter element:

[0007] The housing is composed of an upper housing and a lower housing. The filter element is arranged in the upper housing, and the intake pipe and the outlet pipe are arranged on the side wall of the upper housing above the filter element. The bottom end of the intake pipe extends into the lower housing. The filter element includes a cylinder I screwed to the intake pipe and a cylinder II screwed to the inner wall of the upper housing. The opening between the top ends of the cylinder I and the cylinder II is connected by a ring I, and air outlet openings are evenly arranged on the ring I. A plurality of groups of annular filter bodies are arranged in the cavity formed by the cylinder I, the cylinder II and the ring I. Arc-shaped notches are arranged on the edge angles at the upper and lower ends of the filter body, and clamping rings connecting to the outer wall of the corresponding cylinder I and the inner wall of the cylinder II are respectively arranged between the upper and lower adjacent arc-shaped notches on the same side. A ring II that seals the plurality of groups of filter bodies between the cylinder I and the cylinder II is also screwed on the intake pipe, and air inlet openings staggered from the air outlet openings are evenly arranged on the side wall of the ring II. A thickened part for supporting the bottom edge of the ring II is arranged in a circle around the inner side wall of the lower housing. Rectangular notches are evenly arranged on the top of the outer side wall of the lower housing, and a clamping plate embedded in the rectangular notches is arranged at the bottom end of the upper housing.

[0008] Preferably, a circle of grooves is arranged around the top end surface of the thickened portion, wherein a sealing ring is arranged in the groove to abut against the bottom end surface of the circular ring II.

[0009] Preferably, the outer arc wall of the ring II is screwed and fixed to the inner wall of the upper shell.

[0010] Preferably, the cylinder I, cylinder II and ring I are integrally arranged, wherein a limiting ring is arranged on the air inlet pipe above the cylinder I.

[0011] Preferably, a screw rod passing through the bottom wall of the lower shell body is provided at the bottom end of the air inlet pipe, wherein a nut is threadedly connected to the screw rod on the outer side of the lower shell body.

[0012] Preferably, the filter body is made of sponge, wherein a plurality of groups of filter bodies are arranged vertically and side by side in the cavity formed between cylinder I, cylinder II and ring I.

[0013] Preferably, the vertical cross-section of the clamping ring is a semicircular structure, wherein the size of the clamping ring is adapted to the size of the opening formed between the upper and lower groups of arc-shaped notches on the same side.

[0014] The beneficial effects of the present invention are as follows: since the cylinder I in the filter element is screwed to the air inlet pipe and the cylinder II is screwed to the inner wall of the upper shell body, the stability between the filter element and the outer shell can be effectively enhanced. At the same time, since the above components are screwed and fixed, the sealing performance between the cylinder I and the air inlet pipe and between the cylinder II and the upper shell body is also effectively enhanced. After the upper shell body and the lower shell body are disassembled and separated, since the cylinder I, cylinder II and ring II in the filter element are screwed to the air inlet pipe and the inner wall of the upper shell body respectively, the above components will not fall or topple over from the outer shell. When the filter body needs to be processed, it is only necessary to remove the lower ring II to conveniently extract the filter body from the cylinder I and the cylinder II for processing. When installing the filter body, it is embedded one by one between the cylinder I and the cylinder II. At this time, the clamping ring can clamp the side wall of the arc-shaped notch in the filter body to prevent the filter body from slipping when the filter body is placed into the above components one by one from bottom to top, thereby improving the stability of the filter body in the above components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is a cross-sectional view of the present invention.

[0017] In the figure: 1, outer shell, 101, upper shell, 102, lower shell, 2, air inlet pipe, 3, air outlet pipe, 4, filter element, 41, cylinder I, 42, cylinder II, 43, ring I, 44, filter body, 45, air outlet, 46, ring II, 47, air inlet, 5, arc notch, 6, retaining ring, 7, thickened part, 8, rectangular notch, 9, retaining plate, 10, screw, 11, nut, 12, limiting ring. Detailed implementation mode

[0018] The technical solution of the present invention will be further specifically described below through embodiments in conjunction with the accompanying drawings.

[0019] An air filter includes a housing 1, an intake pipe 2, an outlet pipe 3 and a filter element 4:

[0020] The housing 1 is composed of an upper housing 101 and a lower housing 102. The filter element 4 is arranged in the upper housing 101. The intake pipe 2 and the outlet pipe 3 are arranged on the side wall of the upper housing 101 above the filter element 4. The bottom end of the intake pipe 2 extends into the lower housing 102. The filter element 4 includes a cylinder I 41 screwed to the intake pipe 2 and a cylinder II 42 screwed to the inner wall of the upper housing 101. An opening between the top ends of the cylinder I 41 and the cylinder II 42 is connected by a ring I 43. The ring I 43 is evenly provided with air outlet openings 45. A plurality of groups of annular filter bodies 44 are arranged in a cavity formed among the cylinder I 41, the cylinder II 42 and the ring I 43. Arc-shaped notches 5 are arranged on the edges of the upper and lower ends of the filter body 44. Clamping rings 6 connecting the outer wall of the corresponding cylinder I 41 and the inner wall of the cylinder II 42 are respectively arranged between the upper and lower adjacent arc-shaped notches 5 on the same side. A ring II 46 for sealing a plurality of groups of filter bodies 44 between the cylinder I 41 and the cylinder II 42 is also screwed on the intake pipe 2. The outer arc wall of the ring II 46 is screwed and fixed to the inner side wall of the upper housing 101. Air inlet openings 47 staggered from the air outlet openings 45 are evenly arranged on the side wall of the ring II 42;

[0021] As Figure 2 shown, a thickened part 7 for supporting the bottom edge of the ring II 46 is arranged in a circle on the inner side wall of the lower housing 102. Rectangular notches 8 are evenly arranged on the top of the outer side wall of the lower housing 102. A clamping plate 9 embedded in the rectangular notches 8 is arranged at the bottom end of the upper housing 101.

[0022] In this embodiment, a circle of clamping grooves is arranged on the top surface of the thickened part 7. A sealing ring abutted against the bottom end surface of the ring II 46 is arranged in the clamping grooves.

[0023] As Figure 2 shown, the cylinder I 41, the cylinder II 42 and the ring I 43 are integrally arranged. A limiting ring 12 is arranged on the intake pipe 2 above the cylinder I 41 to prevent the filter element 4 from moving upward excessively.

[0024] As Figure 2 shown, a screw rod 10 passing through the bottom wall of the lower housing 102 is arranged at the bottom end of the intake pipe 2. A nut 11 is screwed on the screw rod 10 outside the lower housing 102.

[0025] In this embodiment, the filter body 44 is made of sponge, wherein a plurality of groups of filter bodies 44 are arranged vertically and side by side in the cavity formed between the cylinder I41, the cylinder II42 and the ring I43.

[0026] In this embodiment, the vertical cross-section of the clamping ring 6 is a semicircular structure, wherein the size of the clamping ring 6 is adapted to the size of the opening formed between the upper and lower groups of arc-shaped notches 5 on the same side.

[0027] The method of use of the present invention is as follows: the gas enters the lower housing 102 below the filter element 4 through the air inlet pipe 2, then flows into the upper housing 101 above the filter element 4 through the air inlet 47, the filter body 44 and the air outlet 45, and finally is discharged through the air outlet pipe 3, and the gas is filtered by the filter element 4;

[0028] The cylinder I41 in the filter element 4 is screwed to the air inlet pipe 2, and the cylinder II42 is screwed to the inner wall of the upper shell 101, which can effectively enhance the stability between the filter element 4 and the outer shell 1. At the same time, since the above components are screwed and fixed, the sealing performance between the cylinder I41 and the air inlet pipe 2 and the cylinder II42 and the upper shell 101 is also effectively enhanced;

[0029] When the upper shell 101 and the lower shell 102 are locked and fixed by the screw 10 and the nut 11, the clamping plate 9 is clamped into the rectangular notch 8, so that when the nut 11 is turned and the upper shell 101 and the lower shell 102 are locked and fixed by the screw 10, it will not cause the lower shell 102 to rotate at the bottom of the upper shell 101;

[0030] When the upper shell 101 is disassembled and separated from the lower shell 102, since the cylinder I41, cylinder II42 and ring II46 in the filter element 4 are separated from the intake pipe 2 and the inner wall of the upper shell 101 respectively, the above-mentioned components will not fall or tip over from the outer shell 1. When the filter body 4 needs to be processed, it is only necessary to remove the lower ring II46 to conveniently pull the filter body 44 out of the cylinder I41 and the cylinder II42 for processing. When installing the filter body 44, it is embedded one by one between the cylinder I41 and the cylinder II42. At this time, the retaining ring 6 can clamp the side wall of the arc-shaped notch 5 in the filter body 44 to prevent the filter body from slipping when the filter body 44 is placed into the above-mentioned components one by one from bottom to top, thereby improving the stability of the filter body 44 in the above-mentioned components.

[0031] The present invention is described in detail above, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An air filter, comprising a housing, an air inlet pipe, an air outlet pipe and a filter element, characterized in that: The housing is composed of an upper housing and a lower housing, wherein the filter element is arranged in the upper housing, and the air inlet pipe and the air outlet pipe are arranged on the side wall of the upper housing above the filter element, the bottom end of the air inlet pipe extends into the lower housing, the filter element comprises a cylinder I threadedly connected to the air inlet pipe and a cylinder II threadedly connected to the inner wall of the upper housing, wherein the opening between the top of the cylinder I and the cylinder II is connected through a ring I, and the ring I is evenly provided with air outlets, and a plurality of groups of annular filter bodies are arranged in the cavity formed by the cylinder I, the cylinder II and the ring I, wherein the edges at the upper and lower ends of the filter body are Arc-shaped notches are provided, and between the two adjacent groups of arc-shaped notches on the same side, there are respectively provided snap rings connected to the corresponding outer wall of cylinder I and the inner wall of cylinder II. The air inlet pipe is also screwed with a ring II that seals multiple groups of filters between cylinder I and cylinder II, and the side wall of ring II is evenly provided with air inlets staggered with the air outlets. The inner wall of the lower shell body is surrounded by a circle of thickened portions for supporting the bottom edge of ring II, wherein rectangular notches are evenly provided on the top of the outer wall of the lower shell body, and a clamping plate embedded in the rectangular notches is provided at the bottom end of the upper shell body.

2. An air filter according to claim 1, characterized in that: The top end surface of the thickened portion is surrounded by a circle of grooves, wherein a sealing ring is arranged in the groove to abut against the bottom end surface of the circular ring II.

3. An air filter according to claim 1, characterized in that: The outer arc wall of the circular ring II is screwed and fixed to the inner wall of the upper shell.

4. An air filter according to claim 1, characterized in that: The cylinder I, cylinder II and ring I are integrally arranged, wherein a limiting ring is arranged on the air intake pipe above the cylinder I.

5. An air filter according to claim 1, characterized in that: The bottom end of the air inlet pipe is provided with a screw rod passing through the bottom wall of the lower shell body, wherein a nut is screwed onto the screw rod on the outer side of the lower shell body.

6. An air filter according to claim 1, characterized in that: The filter body is made of sponge, wherein a plurality of groups of filter bodies are arranged vertically and side by side in a cavity formed between cylinder I, cylinder II and ring I.

7. An air filter according to claim 1, characterized in that: The vertical cross section of the clamping ring is a semicircular structure, wherein the size of the clamping ring is adapted to the size of the opening formed between the upper and lower groups of arc-shaped notches on the same side.

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