Tank cover and air filter

Abstract

The utility model belongs to the field of air inlet systems, and particularly relates to a box cover and an air filter. Comprising a box cover, the box cover is internally provided with the filter element and a visible window, the box cover and the visible window are integrally formed, and the box cover is used for observing the filter element. According to the utility model, the visible window is arranged on the shell, so that a user can conveniently observe the use condition of the filter element in the shell, the filter element can be replaced in time, and the conditions of engine power reduction, insufficient power, carbon deposition and the like caused by insufficient combustion of an engine due to influence on the ratio of air to fuel oil due to influence on the air inflow caused by excessive impurities accumulated on the filter element are avoided.

Description

Technical Field

[0001] The utility model belongs to the field of intake systems, and particularly relates to a box cover and an air filter. Background Art

[0002] An air filter (also known as an air cleaner) is a part of the intake system of vehicles such as cars, ATVs, and motorcycles. Its main function is to filter out impurities or dust in the air and allow clean air to enter the engine cylinder. The air filter usually filters the inhaled air by installing a filter element in a box cover, and then provides the relatively clean filtered air for the engine to use.

[0003] An air filter generally includes two parts: a main body and a cover. The filter element is installed inside the cover or the main body, and then the cover is combined with the main body to complete the assembly of the whole device. In order to allow the filter element to filter out more dust and impurities before replacement, most filter elements are installed in a replaceable manner. When disassembling and replacing, it is necessary to disassemble the outer shell, the installation structure, and the filter element in sequence. The existing installation structure of the air filter filter element is complex, easy to deform, and the assembly and fixation are cumbersome. In addition, since the filter element is wrapped inside the outer shell, the replacement of the general filter element is determined according to the driving mileage or the usage time. Users cannot timely understand the usage situation of the filter element, which easily leads to situations such as poor filtering effect due to the failure of users to replace the filter element in time. Summary of the Utility Model

[0004] The utility model is made to solve the above problems, and aims to provide a box cover and an air filter that can timely observe the usage situation of the filter element located inside and facilitate the timely replacement of the filter element.

[0005] The utility model provides a box cover for installing on the box body of an air filter, having the following features: an outer shell provided with a main air inlet; a filtering part installed inside the outer shell, forming an air inlet cavity communicating with the main air inlet between the filtering part and the outer shell, and having at least a filter element; the outer shell having a box cover with the filter element installed inside, and a visible window integrally formed with the box cover for observing the filter element.

[0006] In the box cover provided by the utility model, it may further have the following feature: the inner side of the visible window has a positioning and strengthening part extending out of the edge of the visible window, and the positioning and strengthening part abuts against the inner wall of the box cover.

[0007] The box cover provided by the utility model may also have the following characteristics: the shell has an open end and a closed end, and the filter part also has: a mounting frame for mounting the filter element in the shell, and having a first mounting end cover and a second mounting end cover respectively combined with the open end and the closed end, the first mounting end cover having a slot for inserting the edge of the open end and a fixing slot for fixing one end of the filter element on the side facing the filter element, the second mounting end cover having a mounting slot for fixing the other end of the filter element on the side facing the filter element, and a fastening component is provided between the second mounting end cover and the closed end.

[0008] The box cover provided by the utility model may also have the following feature: a fixing plate is provided on the side of the second mounting end cover facing away from the filter element, and the closed end is connected to the fixing plate through the fastening component.

[0009] The box cover provided by the present invention may also have the following features: the fastening component comprises: a nut fixed on the fixing plate, a bolt passing through the closed end in sequence and being threadedly connected to the fixing plate on the nut, and the shell is pushed toward the side where the first mounting end cover is located by rotating the bolt, thereby fastening the edge of the open end in the slot.

[0010] The box cover provided by the utility model may also have the following features: the filter element is annular, having an outer ring and an inner ring, an air inlet cavity connected to the main air inlet on the outer shell is formed between the outer ring and the inner wall of the outer shell, and the inner ring forms an inner cavity for the gas filtered by the filter element to flow through.

[0011] In the box cover provided by the utility model, it can also have the following characteristics: the mounting frame also has a connecting column extending from the middle of the first mounting end cover to the middle of the second mounting end cover, the connecting column is located in the inner cavity and extends along the axial direction of the filter element, one end is integrally arranged with the first mounting end cover, and the other end is detachably connected to the second mounting end cover, the first mounting end cover is provided with a plurality of vents connected to one end of the inner cavity, and the second mounting end cover closes the other end of the inner cavity.

[0012] The box cover provided by the utility model may also have the following feature: the cross section of the first mounting end cover is an obliquely arranged ellipse.

[0013] In the box cover provided by the utility model, it can also have the following characteristics: the second mounting end cover has: a filter element mounting portion, a mounting groove for inserting the other end of the filter element is opened on the side facing the first mounting end cover, and a fixing portion is connected to the filter element mounting portion as a whole, and protrudes toward the second mounting end cover to form a mounting platform, which is fixed to the connecting column by a fixing member.

[0014] The present utility model also provides an air filter, which has the following features: at least including: a box body, a box cover, and the box cover is installed on the box body and is the box cover as described above.

[0015] The prominent and beneficial technical effects of the present utility model compared with the prior art are:

[0016] The present utility model is provided with a visible window on the outer shell, which is convenient for users to observe the usage condition of the filter element inside, so as to replace the filter element in time, and avoid the situation that the intake air volume is affected due to excessive impurities accumulated on the filter element, resulting in the influence on the air-fuel ratio, incomplete combustion of the engine, and thus the decrease of engine power, insufficient power, carbon deposition, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front-side perspective structural schematic diagram of the air filter of the present utility model.

[0018] Figure 2 is a rear-side perspective structural schematic diagram of the air filter of the present utility model.

[0019] Figure 3 is a top-view perspective structural schematic diagram of the air filter of the present utility model.

[0020] Figure 4 is Figure 3 a sectional view taken along line A-A in

[0021] Figure 5 is a structural schematic diagram of the outer shell of the present utility model.

[0022] Figure 6 is a rear-side perspective structural schematic diagram of the mounting bracket of the present utility model.

[0023] Figure 7 is a front-side perspective structural schematic diagram of the mounting bracket of the present utility model.

[0024] Figure 8 is a rear-side perspective structural schematic diagram of the second mounting end cover of the present utility model.

[0025] Figure 9 is a front-side perspective structural schematic diagram of the second mounting end cover of the present utility model.

[0026] Figure 10 is Figure 3 a sectional view taken along line B-B in

[0027] Reference numerals: housing 1; lid 2; intake chamber 21; main intake port 22; outlet end cap 3; main outlet port 31; sealing ring 32; open end 41; closed end 42; fastening member 43; nut 431; bolt 432; filter section 5; mounting bracket 51, filter element 52; inner cavity 521; bracket 53; second mounting end cap 54; filter element mounting portion 541; fixing portion 542; mounting groove 543; mounting platform 544; fixing piece 55; through hole 552; first mounting end cap 56; slot 561; fixing groove 562; spoke 563; vent port 564; connecting column 57; reinforcing spoke 571; visual window 6; positioning and strengthening portion 61; oil-gas separation section 7; outer connecting pipe 71; inner connecting pipe 72; discharge pipe 73. Detailed implementation manners

[0028] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the following embodiments will specifically elaborate on the technical solutions of the lid and air filter of the present utility model in conjunction with the accompanying drawings.

[0029] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of the embodiments of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limited conditions under which the present utility model can be implemented. Therefore, they do not have any technical substance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the functions that the present utility model can generate and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, the terms such as "inner", "outer", "middle part" and "one" cited in the embodiments of this specification are only for the convenience of description and are not used to limit the scope under which the present utility model can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present utility model can be implemented.

[0030] It should also be noted that when an element is referred to as being "fixed", "arranged" or "connected" to another element, it can be directly on the other element or there may be an intermediate element at the same time.

[0031] <Example 1>

[0032] This embodiment proposes an air filter, which can be applied in automobiles, motorcycles or all-terrain vehicles. As Figures 1 - 5As shown in the figure, the air filter includes a box body 1 and a box cover 2. The box cover 2 is installed on the box body 1. An air outlet cavity 11 is formed inside the box body 1. The air outlet cavity 11 is L-shaped and has two openings. One of the openings is installed with the box cover 2, and the other opening is installed with an air outlet end cover 3. A main air outlet 31 leading to the air outlet cavity 11 is opened on the air outlet end cover 3. The intake pipe of the engine is installed on the main air outlet 31. An intake cavity 21 is formed inside the box cover 2, and a main intake port 22 leading to the intake cavity 21 is opened. Gas enters the intake cavity 21 from the main intake port 22, and then flows out from the main air outlet 31 through the air outlet cavity 11 to the engine intake pipe.

[0033] Specifically, as Figure 3 and Figure 4 shown, the box cover 2 has a housing and a filtering part 5. As Figure 5 shown, the housing is integrally in a cylindrical structure with one end open and one end closed. The open end is regarded as the open end 41, and the closed end is regarded as the closed end 42. The main intake port 22 is also opened on the circumferential surface of the housing. The filtering part 5 has a filter element 52, which is installed inside the housing.

[0034] The housing structurally has a shell 4 and a visible window 6. The filter element 52 is installed inside the shell 4. The visible window 6 is integrally formed with the shell 4 and is used to observe the usage condition of the filter element 52 located inside the housing. In this embodiment, there are two visible windows 6, which are symmetrically arranged on the front and back sides of the shell 4 (in actual situations, there can also be one visible window 6, which is arranged on the front side of the shell 4 for the convenience of users to observe). During production and manufacturing, the visible window 6 is first injection-molded with a transparent material at one time, and then an opaque material is used for secondary injection molding to form the shell 4 on the outer periphery of the visible window 6, so that the shell 4 and the visible window 6 are formed into one body, with high overall strength and the visible window is not easy to fall off. At the same time, this injection molding method also has the characteristics of convenient production, simple structure, and low cost. In this embodiment, the visible window 6 is made of transparent PC material, and the shell 4 is made of opaque PC material.

[0035] As Figure 5 shown, the inner side of the visible window 6 has a positioning and strengthening part 61 extending out of the edge of the visible window 6. The positioning and strengthening part 61 abuts against the inner wall of the shell 4. On the one hand, the extended part is convenient for positioning during secondary injection molding. On the other hand, after the visible window 6 is integrally formed with the shell 4 by secondary injection molding, the extended part abuts against the inside of the shell 4 to form a strengthening structure, enhancing the stability and firmness of the structure.

[0036] As Figure 4 shown, the filtering part 5 includes a mounting frame 51, a filter element 52, and a bracket 53. The mounting frame 51 is used to install the filter element 52 inside the shell 4 and install the housing with the filter element 52 onto the box body 1. As Figure 4 andFigures 6 - 9 As shown, the mounting frame 51 has a first mounting end cap 56 and a second mounting end cap 54, one side of the first mounting end cap 56 (the side facing the housing 1 or the side facing away from the filter element 52) ​​is combined with the edge of the housing 1, and the other side (the side facing the filter element 52 or the side facing away from the housing 1) is combined with the opening end 41 and the filter element 52, and is formed with a slot 561 for inserting the edge of the opening end 41 of the housing and a fixing groove 562 for fixing one end of the filter element 52. A convex edge is formed at the edge of the opening end 41, which is inserted into the slot 561, and there is an edge near the convex edge that can fit with the outer edge of the slot 561, so that the slot 561 is more tightly connected to the edge of the opening end 41, and the sealing is also guaranteed. In actual situations, the material around the slot 561 can also be selected to be a soft and deformable material. Once the edge of the opening end 41 is inserted, the slot 561 will firmly wrap the edge of the opening end 41, which can also ensure the tightness and sealing of the connection.

[0037] The second mounting end cover 54 has a mounting groove 543 on one side facing the filter element 52 for fixing the other end of the filter element 52 , and a fastening component 43 is provided between the second mounting end cover 54 and the closed end 42 of the housing.

[0038] The filter element 52 is an annular cylindrical filter element, and the filter element 52 has an outer ring and an inner ring. Figure 4 As shown, an annular air inlet cavity 21 connected to the main air inlet 22 is formed between the outer ring and the inner wall of the housing 4, and an inner cavity 521 connected to the air outlet cavity 11 is formed in the inner ring of the filter element 52. Figure 4 As shown by the arrows in the figure, the gas entering from the main air inlet 22 enters the air inlet cavity 21, then enters the inner cavity 521 after being filtered by the filter element 52, and then flows out from the air outlet cavity 11, completing the entire air intake filtration process. In addition, the opening direction of the main air inlet 22 is preferably in a direction where the air intake flow direction is tangent to the outer periphery of the filter element, so that the gas can enter the filter element 52 for filtration.

[0039] In addition, the mounting bracket 51 further has a connecting column 57 extending from the middle of the first mounting end cap 56 to the middle of the second mounting end cap 54. The connecting column 57 is located in the inner cavity 521 and extends along the axial direction of the filter element 52. One end of the connecting column 57 is integrally connected to the first mounting end cap 56, and the other end is detachably connected to the second mounting end cap 54 through a fixing member 545. In this embodiment, the connecting column 57 is a tapered columnar structure extending from the first mounting end cap 56 to the second mounting end cap 54, and there are several triangular reinforcing spokes 571 on the outer peripheral surface of the connecting column 57. The first mounting end cap 56 is an oval-shaped ring, and several spokes 563 are formed in the middle. The intersection point in the middle of the several spokes 563 is connected to the connecting column 57, and several vent holes 564 communicating with one end of the inner cavity 521 are formed between adjacent spokes 563.

[0040] As Figure 4 and Figure 8 shown, the second mounting end cap 54 closes the other end of the inner cavity 521, and the second mounting end cap 54 has a filter element mounting portion 541 and a fixing portion 542. On the side of the filter element mounting portion 541 facing the filter element 52, there is provided the mounting groove 543 for the other end of the filter element 52 to be inserted. The fixing portion 542 is integrally connected with the filter element mounting portion 541 and protrudes towards the connecting column 57 to form a mounting platform 544. The mounting platform 544 is fixed to the connecting column 57 through a fixing member 545. The fixing member 545 can be a bolt. There is a threaded hole in the second mounting end cap 54, and a through hole is provided on the mounting platform 544. The fixing member 545 passes through the through hole and extends into the threaded hole, thereby fixing the second mounting end cap 54 on the connecting column 57, and at the same time enabling the filter element 52 to be firmly mounted on the mounting bracket 51. A placement space for the filter element 52 is formed between the first mounting end cap 56 and the second mounting end cap 54, and at the same time, it plays a role in positioning and fixing the front and rear ends of the filter element 52, and both ends present a wrapped connection structure, making the installation of the filter element 52 more stable.

[0041] The bracket 53 is arranged on the inner circle or / and outer circle of the filter element 52. The bracket 53 is used to support the filter element 52 and is installed together with the filter element 52 between the first mounting end cap 56 and the second mounting end cap 54. One end of the bracket 53 and the filter element 52 are made into a whole by PC foam material and inserted into the fixing groove 562 of the first mounting end cap 56, and the other end is inserted into the mounting groove 543 of the second mounting end cap 54.

[0042] As Figure 9 shown, a fixing piece 55 is welded on the side of the filter element mounting portion 541 of the second mounting end cap 54 facing away from the filter element 52. One end of the housing away from the box body 1 (i.e., the closed end 42) is detachably connected to the fixing piece 55 through a fastening member 43. In this embodiment, as Figure 4 and Figure 9As shown in the figure, the fastening component 43 has a pair of nuts 431 and a bolt 432. A pair of nuts 431 are welded and fixed on one side of the fixing piece 55 facing the filter element installation part 541. The fixing piece 55 is provided with a through hole 552 corresponding to each nut 431. The closing end 42 is also provided with a through hole correspondingly. The bolt 432 passes through the through holes on the closing end 42 and the fixing piece 55 in sequence and extends into the nut 431. During the process of screwing the bolt 432 tightly, the housing can be pushed to move towards the side where the box body 1 is located, so that the edge of the opening end 41 of the housing extends into and tightly fits in the slot 561, completing the installation of the housing, thereby fixing the filter element 52 in the housing to form the box cover 2. Since the housing and the first installation end cover 46 are connected by plugging, there is no need to add other bolt fixing structures, etc. During disassembly, only the locking component needs to be disassembled, which is very convenient and fast.

[0043] When replacing the filter element 52, first unscrew the bolt 432, remove the housing, then unscrew the fixing piece 545, remove the second installation end cover 54, and then the filter element 52 can be taken out together with the bracket 53. Then replace it with a new filter element 52, and then install the second installation end cover 54 and the housing in sequence. The disassembly and assembly are very convenient.

[0044] In this embodiment, as Figure 4 shown, the first installation end cover 56 and the box body 1 are fixed by welding, and the cross-section at the connection between the two is an ellipse arranged obliquely, which can increase the air outlet area and improve the air intake volume and air intake efficiency of the engine.

[0045] During disassembly, since the first installation end cover 56 and the box body 1 are fixed by welding, the first installation end cover 56 and the box body 1 always remain connected. Only the housing and the second installation end cover 54 need to be removed in sequence to replace the filter element 52. Not only are the disassembly steps simple and the disassembly is rapid, but also the airtightness between the first installation end cover 56 and the box body 1 can be guaranteed.

[0046] <Embodiment 2>

[0047] On the basis of the above Embodiment 1, in this embodiment, as Figure 2 shown, an air outlet end cover 3 is installed on the box body 1 away from the box cover 2. The air outlet end cover 3 is provided with a main air outlet 31 communicating with the air outlet cavity. The air outlet end cover 3 is also provided with a sealing ring 32 surrounding the outer circle of the main air outlet. In this embodiment, since this air filter is used for a twin-cylinder engine, there are two main air outlets 31, and these two main air outlets 31 are arranged side by side. The sealing ring 32 is in an "∞" shape and is directly fixed on the air outlet end cover 3, so that the air outlet end cover 3 can be directly connected to the throttle valve, omitting the intermediate hose connection and increasing the airtightness.

[0048] As Figure 2 and Figure 10As shown, an oil-gas separation part 7 communicating with the crankcase is further provided at the air outlet end of the air outlet end cover 3. An outer connecting pipe 71 for connecting to the crankcase is formed on one side of the oil-gas separation part 7, and an inner connecting pipe 72 for communicating with the air outlet cavity 11 is formed on the other side. A discharge pipe 73 is further provided below the outer connecting pipe 71. A circlip and a plug are provided on the discharge pipe 73 for discharging the separated oil. A sponge is provided inside the oil-gas separation part 7 for oil-gas separation.

[0049] Technical effects of the embodiment

[0050] In the above embodiment, a visual window is provided on the outer shell, which is convenient for users to observe the usage condition of the filter element located inside, so as to replace the filter element in time, and avoid the situation that the intake air volume is affected due to excessive impurities accumulated on the filter element, resulting in the influence on the air-fuel ratio and incomplete combustion of the engine, leading to a decrease in engine power, insufficient power, carbon deposition, etc.

[0051] Furthermore, the inner side of the visual window has a positioning and strengthening part extending out of the edge of the visual window. On the one hand, the extended part is convenient for positioning during injection molding. On the other hand, after the visual window and the shell are integrated, the extended part abuts against the inside of the shell to form a strengthening structure, enhancing the stability and firmness of the structure.

[0052] Furthermore, the filtering part is installed on the outer shell, including a filter element and a mounting frame. The mounting frame is provided with a first mounting end cover and a second mounting end cover for fixing the filter element between the two. The first mounting end cover contains a slot for the insertion of the open end of the shell. A fastening component is provided between the second mounting end cover and the closed end of the shell. The connection between the shell and the mounting frame is realized through the fastening component. When disassembling, only the connection between the outer shell and the second mounting end cover needs to be released to disassemble the filtering part, which is very convenient and rapid.

[0053] Furthermore, the fastening component has a nut fixed on the fixing piece of the second mounting end cover and a bolt. The bolt sequentially passes through the closed end and is threadedly connected to the nut on the fixing piece. By rotating the bolt, the outer shell is pushed towards the side where the first mounting end cover is located, and the edge of the open end is fastened in the slot, thereby realizing the fixation of the shell and the first mounting end cover. When disassembling, only the nut needs to be unscrewed to disengage it from the second mounting end cover, and the shell can be disassembled to replace the filter element.

[0054] Furthermore, the filter element is an annular filter element. An intake cavity communicating with the main intake port is formed between the outer ring of the filter element and the inner wall of the outer shell. The inner ring of the filter element forms an inner cavity. Air enters the filter element from the intake cavity of the outer ring and then flows out to the air outlet cavity from the inner cavity inside the filter element. By adopting an annular filter element, the filtering area of the annular filter element can be maximized under the same volume, the air can be filtered to a greater extent, the filtering effect can be improved, and the impurities filtered out can be accommodated in a larger range, extending the service life of the filter element.

[0055] Furthermore, the mounting bracket further has a connecting column extending from the middle of the first mounting end cover to the middle of the second mounting end cover. The connecting column is located in the inner cavity and extends along the axial direction of the filter element. One end is integrally provided with the first mounting end cover, and the other end is detachably connected to the second mounting end cover. The filter element is arranged between the first mounting end cover and the second mounting end cover, forming a wrapped positioning and fixing of the front and rear ends of the filter element, making the installation of the filter element more reliable and stable. In addition, when replacing the filter element, it is only necessary to detach the second mounting end cover from the connecting column, and then the filter element can be taken out for replacement.

[0056] Furthermore, the cross-section of the connection between the first mounting end cover of the mounting bracket of the filtering part and the box body is an oblong shape arranged obliquely, which can increase the air outlet area, thereby improving the air intake volume and air intake efficiency of the engine.

[0057] The above embodiments are the preferred cases of the present invention and are not used to limit the protection scope of the present invention. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the present invention still belongs to the scope of the technical solution of the present invention.

Claims

1. A box cover for mounting on the box body of an air filter, characterized in that, include: The housing has a main air inlet. The filter unit is installed in the housing, an air inlet cavity connected to the main air inlet is formed between the filter unit and the housing, and the filter unit has at least a filter element. The housing has: The housing has the filter element installed inside. A visual window is formed integrally with the housing and is used for observing the filter element.

2. The lid according to claim 1, characterized in that: The inner side of the visible window is provided with a positioning reinforcement portion extending out of the edge of the visible window, and the positioning reinforcement portion is disposed against the inner wall of the shell.

3. The lid according to claim 1, characterized in that, The housing has an open end and a closed end, and the filter portion further has: The mounting frame is used to mount the filter element in the housing and has a first mounting end cap and a second mounting end cap respectively combined with the open end and the closed end. The first mounting end cap has a slot for inserting the edge of the opening end and a fixing groove for fixing one end of the filter element on the side facing the filter element. The side of the second mounting end cover facing the filter element comprises a mounting groove for fixing the other end of the filter element, and a fastening component is arranged between the second mounting end cover and the closed end.

4. The lid according to claim 3, characterized in that: A fixing plate is provided on the side of the second mounting end cover facing away from the filter element, and the closed end is connected to the fixing plate through the fastening component.

5. The lid according to claim 4, wherein: The fastening component has: A nut fixed on the fixing plate, The bolts are sequentially passed through the closed ends and the fixing pieces and are threadedly connected to the nuts. The housing is pushed toward the side where the first mounting end cover is located by rotating the bolt, so that the edge of the open end is fastened in the slot.

6. The lid according to claim 3, characterized in that: The filter element is annular and has an outer ring and an inner ring. An air inlet cavity connected to a main air inlet on the shell is formed between the outer ring and the inner wall of the shell. The inner ring forms an inner cavity for the gas filtered by the filter element to flow through.

7. The lid according to claim 6, characterized in that: The mounting frame also has a connecting column extending from the middle of the first mounting end cover to the middle of the second mounting end cover, the connecting column is located in the inner cavity and extends along the axial direction of the filter element, one end is integrally arranged with the first mounting end cover, and the other end is detachably connected to the second mounting end cover, the first mounting end cover is provided with a plurality of vents connected to one end of the inner cavity, and the second mounting end cover closes the other end of the inner cavity.

8. The lid according to claim 7, wherein: The cross section of the first mounting end cover is an obliquely arranged ellipse.

9. The lid according to claim 7, characterized in that: The second mounting end cap has: The filter element installation portion has a side facing the first installation end cover and is provided with an installation groove for inserting the other end of the filter element. The fixing part is connected with the filter element mounting part as a whole, and protrudes toward the second mounting end cover to form a mounting platform, and is fixed to the connecting column through a fixing piece.

10. An air filter, characterized in that, At least: Box, A box cover is mounted on the box body. The box cover is the box cover as described in any one of claims 1-9.

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