Air filter convenient to disassemble and assemble

Abstract

The utility model relates to an air filter convenient to disassemble and assemble, which comprises a top cover and a bottom cover which are oppositely distributed up and down, a fine filtration sleeve is arranged between the top cover and the bottom cover, a rough filtration sleeve is sleeved on the periphery of the fine filtration sleeve, one axial end of the fine filtration sleeve is fixedly connected with the bottom cover, and one axial end of the rough filtration sleeve is fixedly connected with the top cover. A transverse sliding groove is formed in the inner circumferential surface of the other axial end of the rough filtration sleeve in the circumferential direction, the end of the transverse sliding groove is connected with a vertical sliding groove in a communicating mode, and a clamping block capable of being matched with the vertical sliding groove or the transverse sliding groove is arranged on the periphery of the end, fixedly connected with the bottom cover, of the fine filtration sleeve. The air filter provided by the utility model is convenient to disassemble and assemble, the connection between the rough filtration sleeve and the bottom cover is firmer, and even if the air filter works for a long time or is replaced for multiple times, a gap is not generated between the rough filtration sleeve and the bottom cover.

Description

Technical Field

[0001] The utility model particularly relates to an air filter which is easy to assemble and disassemble. Background Art

[0002] The function of the air filter is to filter impurities in the air. If the filtering efficiency is not high and the impurities in the air cannot be effectively filtered, it will cause wear of the internal parts of the engine and lead to engine damage.

[0003] The Chinese utility model patent document with publication number "CN220929549U" discloses an engine air filter, which is mainly composed of a top cover, a coarse filter sleeve, a fine filter sleeve, a bottom cover, a rubber sleeve, and a clamp. The connection relationship between the various components is detailed in the specification of the public document. Figure 1 . In conjunction with paragraph 0030 and the attached Figure 3 It can be clearly seen that the air filter realizes the disassembly and assembly of the coarse filter sleeve by providing a straight cylindrical section at the lower end of the coarse filter sleeve and providing an annular flange on the outer periphery of the bottom cover.

[0004] Although this structure (the straight section and the annular flange cooperate) can realize the simple disassembly and assembly of the coarse filter sleeve, if the fitting accuracy between the straight section and the annular flange is not high enough, or if the fitting clearance between the straight section and the annular flange becomes larger due to long-term use, vibration and other factors, the coarse filter sleeve will become loose and unable to maintain the required tight connection relationship with the bottom cover, which will affect the sealing performance of the filter, allowing unfiltered air to enter the engine and affect the normal operation of the engine. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide an air filter that is easy to disassemble and assemble, in view of the deficiencies of the above-mentioned existing technologies. The air filter is easy to disassemble and assemble, and the connection between the coarse filter sleeve and the bottom cover is more reliable. Even if the coarse filter sleeve works for a long time or is replaced multiple times, no gap will be generated between the coarse filter sleeve and the bottom cover.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an air filter that is easy to disassemble and assemble, comprising a top cover and a bottom cover relatively distributed up and down, a fine filter sleeve is arranged between the top cover and the bottom cover, and a coarse filter sleeve is sleeved on the outer periphery of the fine filter sleeve, characterized in that: one axial end of the fine filter sleeve is fixedly connected to the bottom cover, one axial end of the coarse filter sleeve is fixedly connected to the top cover, the inner peripheral surface of the other axial end of the coarse filter sleeve is provided with a transverse sliding groove arranged along the circumferential direction, the end of the transverse sliding groove is conductively connected to a vertical sliding groove, and the outer periphery of the end of the fine filter sleeve fixedly connected to the bottom cover is provided with a block that can be adapted to the vertical sliding groove or the transverse sliding groove.

[0007] By manually rotating the bottom cover or rubber sleeve, the block moves along the horizontal sliding groove until it reaches one end of the vertical sliding groove. The bottom cover or rubber sleeve can then be pulled directly to quickly remove the coarse filter sleeve for cleaning or replacing the air filter interior. Compared to existing technologies, this design is easier to disassemble and assemble, and the connection between the coarse filter sleeve and the bottom cover is more secure. Even after long periods of operation or multiple replacements, there will be no gap between the coarse filter sleeve and the bottom cover.

[0008] The solution can be further configured as follows: a filter sponge is provided between the coarse filter sleeve and the fine filter sleeve, a flat end cover is provided at the other axial end of the fine filter sleeve, the filter sponge is sleeved on the outer periphery of the fine filter sleeve, and the filter sponge is in the shape of a tube with one end closed and the other end open, and the closed end of the filter sponge corresponds to the position of the flat end cover.

[0009] By adding a filter sponge between the coarse and fine filter sleeves, the air filter achieves enhanced filtration compared to existing technologies. The filter sponge blocks tiny particles, forming a multi-stage filtration system with the coarse and fine filter sleeves. Furthermore, the filter sponge is designed in a cylindrical shape with one end closed and the other open. The closed end aligns with the flat end cap, facilitating both positioning and removal during installation, facilitating maintenance and replacement, and ensuring the continued efficient operation of the air filter.

[0010] The solution can be further designed as follows: an air outlet is passed through the middle of the bottom cover, a rubber sleeve is inserted into the air outlet, and the rubber sleeve includes an upper cylinder part and a lower cylinder part whose central axes are inclined at an angle, one end of the upper cylinder part is inserted into the air outlet and is connected to the interior of the fine filter sleeve, one end of the lower cylinder part is integrally formed with the other end of the upper cylinder part and is conductively connected to each other, and the other end of the lower cylinder part is inclined toward one side.

[0011] By designing the rubber sleeve inserted at the air outlet to include an upper cylindrical part and a lower cylindrical part, and the central axes of the two are tilted at an angle, the air outlet structure of the air filter is more flexible and can adapt to the connection requirements of the intake pipe at different angles; at the same time, the upper cylindrical part is connected to the inside of the fine filter sleeve, and the lower cylindrical part is tilted to one side, which reduces the air flow resistance and improves the filtration efficiency of the air filter.

[0012] The solution can be further designed as follows: the outer peripheral surface of the fine filter sleeve is penetrated by square filter holes that are evenly spaced from each other.

[0013] Square filter holes can provide a larger filtration area, allowing more air to pass through in the same space, which is beneficial to improving the filtration efficiency and dust holding capacity of the air filter; at the same time, the design of square filter holes is also more conducive to the capture and retention of particulate matter, enhancing the filtration effect and ensuring the normal operation of the engine.

[0014] The solution can be further designed as follows: the outer peripheral surface of the coarse filter sleeve is penetrated by strip-shaped filter holes that are evenly spaced from each other.

[0015] The strip filter holes increase the filtration area and ventilation volume of the coarse filter sleeve, thereby improving the filtration efficiency of the air filter. At the same time, compared with filter holes of other shapes, the strip filter holes have better blocking and filtering effects on larger impurities in the air such as leaves and stones, and can effectively prevent these impurities from entering the engine, protecting the engine from damage, and thus extending the service life of the engine.

[0016] The solution can be further designed as follows: a diverter cover is provided on the upper part of the top cover, there is a gap between the diverter cover and the top cover, the diverter cover is located in the middle of the end face facing the top cover and is connected to a cylindrical support block, the cylindrical support block is located in the middle of the end face away from the diverter cover and is connected to a support column, and the lower end of the support column is connected to the middle of the top cover.

[0017] By adding a diverter cover and its related cylindrical support block and support column structure to the top cover, the gap between the diverter cover and the top cover can be used to form an air pre-flow channel, so that the air entering the air filter is first dispersed and buffered to reduce direct impact, and then the cylindrical support block and support column further guide and support the airflow, optimize the airflow path, achieve uniform distribution of airflow, and improve the filtering effect and efficiency of the air filter.

[0018] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0020] Figure 2 A schematic cross-sectional view of an embodiment of the present utility model;

[0021] Figure 3 This is an exploded diagram of an embodiment of the present invention.

[0022] Label: top cover 1, bottom cover 2, fine filter sleeve 3, coarse filter sleeve 4, horizontal sliding groove 5, vertical sliding groove 6, clamping block 7, rubber sleeve 8, filter sponge 9, flat end cover 10, air outlet 11, upper cylinder 12, lower cylinder 13, square filter hole 14, strip filter hole 15, diverter cover 16, cylindrical support block 17, support column 18. DETAILED DESCRIPTION

[0023] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1 to 3 The air filter shown is easy to disassemble and assemble, including a top cover 1 and a bottom cover 2 that are relatively distributed in an upper and lower direction. A fine filter sleeve 3 is provided between the top cover 1 and the bottom cover 2. A coarse filter sleeve 4 is provided on the outer periphery of the fine filter sleeve 3. One axial end of the fine filter sleeve 3 is fixedly connected to the bottom cover 2, and one axial end of the coarse filter sleeve 4 is fixedly connected to the top cover 1. The inner periphery of the other axial end of the coarse filter sleeve 4 is provided with a transverse sliding groove 5 arranged along the circumference. The end of the transverse sliding groove 5 is connected to a vertical sliding groove 6. The outer periphery of the end of the fine filter sleeve 3 fixedly connected to the bottom cover 2 is provided with a block 7 that can adapt to the vertical sliding groove 6 or the transverse sliding groove 5. By manually rotating the bottom cover 2 or the rubber sleeve 8, the block 7 will move along the transverse sliding groove 5 until it moves to one end of the vertical sliding groove 6. The bottom cover 2 or the rubber sleeve 8 can then be directly pulled to quickly remove the coarse filter sleeve 4 and clean or replace the interior of the air filter. Compared with the prior art, the disassembly and assembly is convenient, and the connection between the coarse filter sleeve 4 and the bottom cover 2 is more reliable. Even if the coarse filter sleeve 4 works for a long time or is replaced many times, no gap will be generated between the coarse filter sleeve 4 and the bottom cover 2.

[0025] A filter sponge 9 is provided between the coarse filter sleeve 4 and the fine filter sleeve 3. A flat end cap 10 is provided at the other axial end of the fine filter sleeve 3. The filter sponge 9 is sleeved on the outer periphery of the fine filter sleeve 3, and the filter sponge 9 is in the shape of a tube with one end closed and the other end open. The closed end of the filter sponge 9 corresponds to the position of the flat end cap 10. By adding the filter sponge 9 between the coarse filter sleeve 4 and the fine filter sleeve 3, the filtering effect of the air filter is better than that of the prior art. The filter sponge 9 can block tiny particles and form a multi-stage filtration system with the coarse filter sleeve 4 and the fine filter sleeve 3. At the same time, the filter sponge 9 is set in the shape of a tube with one end closed and the other end open. The closed end corresponds to the position of the flat end cap 10, which facilitates the positioning of the filter sponge 9 during installation and the removal of the filter sponge 9, which is conducive to maintenance and replacement, and ensures the continuous and efficient operation of the air filter.

[0026] An air outlet 11 is passed through the middle of the bottom cover 2, and a rubber sleeve 8 is inserted into the air outlet 11. The rubber sleeve 8 includes an upper cylindrical portion 12 and a lower cylindrical portion 13, whose central axes are tilted at an angle. One end of the upper cylindrical portion 12 is inserted into the air outlet 11 and is in communication with the interior of the fine filter sleeve 3. One end of the lower cylindrical portion 13 is integrally formed with the other end of the upper cylindrical portion 12 and is in communication with each other. The other end of the lower cylindrical portion 13 is tilted toward one side. By designing the rubber sleeve 8 inserted into the air outlet 11 to include an upper cylindrical portion 12 and a lower cylindrical portion 13, and the central axes of the two are tilted at an angle, the air outlet structure of the air filter is more flexible and can adapt to the requirements of intake pipe connections at different angles. At the same time, the upper cylindrical portion 12 is in communication with the interior of the fine filter sleeve 3, and the lower cylindrical portion 13 is tilted toward one side, reducing airflow resistance and improving the filtration efficiency of the air filter.

[0027] The outer surface of the fine filter sleeve 3 is penetrated by evenly spaced square filter holes 14. These square filter holes 14 provide a larger filtration area, allowing more air to pass through within the same space, thereby improving the air filter's filtration efficiency and dust holding capacity. Furthermore, the square filter holes 14 are more conducive to capturing and retaining particulate matter, enhancing the filtration effect and ensuring the normal operation of the engine.

[0028] The outer circumference of the coarse filter sleeve 4 is penetrated by evenly spaced strip-shaped filter holes 15. These increase the filter area and ventilation volume of the coarse filter sleeve 4, improving the filtration efficiency of the air filter. Furthermore, compared to filter holes of other shapes, the strip-shaped filter holes 15 are more effective at blocking and filtering larger impurities in the air, such as leaves and stones, effectively preventing these impurities from entering the engine, protecting it from damage and extending its service life.

[0029] A diverter cover 16 is provided on the top of the top cover 1. A gap exists between the diverter cover 16 and the top cover 1. A cylindrical support block 17 is connected to the middle of the end face of the diverter cover 16 facing the top cover 1. A support column 18 is connected to the middle of the end face of the cylindrical support block 17 away from the diverter cover 16. The lower end of the support column 18 is connected to the middle of the top cover 1. By adding the diverter cover 16 and its related cylindrical support block 17 and support column 18 structure to the top cover 1, an air pre-flow channel can be formed by utilizing the gap between the diverter cover 16 and the top cover 1. The air entering the air filter is first dispersed and buffered to reduce direct impact. Then, the cylindrical support block 17 and support column 18 further guide and support the airflow, thereby optimizing the airflow path, achieving uniform distribution of the airflow, and improving the filtering effect and efficiency of the air filter.

Claims

1. An air filter that is easy to disassemble and assemble, comprising a top cover and a bottom cover that are arranged opposite each other in an upper and lower direction, a fine filter sleeve being provided between the top cover and the bottom cover, and a coarse filter sleeve being provided on the outer periphery of the fine filter sleeve, characterized in that: One axial end of the fine filter sleeve is fixedly connected to the bottom cover, and one axial end of the coarse filter sleeve is fixedly connected to the top cover. The inner circumference of the other axial end of the coarse filter sleeve is provided with a transverse sliding groove arranged along the circumferential direction, and the end of the transverse sliding groove is conductively connected to the vertical sliding groove. The outer circumference of the end of the fine filter sleeve fixedly connected to the bottom cover is provided with a block that can be adapted to the vertical sliding groove or the transverse sliding groove.

2. The air filter that is easy to disassemble and assemble according to claim 1, characterized in that: A filter sponge is provided between the coarse filter sleeve and the fine filter sleeve, and a flat end cover is provided at the other axial end of the fine filter sleeve. The filter sponge is sleeved on the outer periphery of the fine filter sleeve, and the filter sponge is in the shape of a tube with one end closed and the other end open. The closed end of the filter sponge corresponds to the position of the flat end cover.

3. The air filter that is easy to disassemble and assemble according to claim 2, characterized in that: An air outlet is passed through the middle of the bottom cover, and a rubber sleeve is inserted into the air outlet. The rubber sleeve includes an upper cylinder part and a lower cylinder part whose central axes are inclined at an angle. One end of the upper cylinder part is inserted into the air outlet and is connected to the interior of the fine filter sleeve. One end of the lower cylinder part is integrally formed with the other end of the upper cylinder part and is conductively connected to each other. The other end of the lower cylinder part is inclined toward one side.

4. The air filter that is easy to disassemble and assemble according to claim 3, characterized in that: The outer peripheral surface of the fine filter sleeve is penetrated by square filter holes that are evenly distributed at intervals.

5. The air filter that is easy to disassemble and assemble according to claim 4, characterized in that: The outer peripheral surface of the coarse filter sleeve is penetrated by strip-shaped filter holes that are evenly distributed and spaced apart from each other.

6. The air filter that is easy to disassemble and assemble according to claim 5, characterized in that: A diverter cover is provided on the upper part of the top cover, and there is a gap between the diverter cover and the top cover. The diverter cover is located in the middle of the end face facing the top cover and is connected to a cylindrical support block. The cylindrical support block is located in the middle of the end face away from the diverter cover and is connected to a support column. The lower end of the support column is connected to the middle of the top cover.

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