Protective cover of vortex type air prefilter

Abstract

The utility model discloses a protective cover of a vortex type air prefilter, which comprises a mounting plate, an outer cover and a plurality of fastening components used for connecting the mounting plate and the outer cover, and the vortex type air prefilter is positioned in an area enclosed by the mounting plate and the outer cover. The outer cover is provided with a dust discharge hole corresponding to the position of a dust discharge port of the vortex type air prefilter; flanges extending towards the outer cover are arranged on the top and the two side edges of the mounting plate, the outer cover is provided with embracing edges abutting against the flanges, and the buckling assembly comprises buckles which are arranged on the flanges and protrude outwards and buckle holes which are formed in the embracing edges and matched with the buckles. The section of the outer cover in the horizontal direction is of a U-shaped structure; the bottom of the outer cover extends to the position below an air inlet of the vortex type air prefilter. According to the protective cover of the vortex type air prefilter, water drops can be prevented from entering the air prefilter along with air, and dust is prevented from being sucked back.

Description

Technical Field

[0001] The utility model relates to the technical field of installation accessories of a vortex air pre-filter, and particularly relates to a protective cover for a vortex air pre-filter. Background Art

[0002] The vortex air pre-filter a is used to filter dust and impurities in the intake air. The external air with dust and impurities enters the pre-filter through the intake port a1 at the bottom of the pre-filter. After passing through the fixed blades, the air changes its flow direction to form a rotating vortex. The dust and impurities are directly discharged from the pre-filter through the dust discharge port a2 on the side of the pre-filter, and the clean air continues to flow back into the pre-filter after turning back.

[0003] The waterproof function of the vortex air pre-filter installed on a light-duty fuel cell vehicle is poor. In rainy days, water droplets are easily attached to the outer surface of the pre-filter and are sucked into the interior along with the negative pressure. In this way, when the fuel cell works, the water droplets sucked in will cause damage to the air compressor. In addition, the distance between the dust discharge port a2 and the intake port a1 of the vortex air pre-filter a is relatively close, which easily leads to the phenomenon of dust back-suction.

[0004] It can be seen that the existing technology still needs to be improved. Content of the Utility Model

[0005] In view of the deficiencies of the above-mentioned existing technology, the purpose of the utility model is to provide a protective cover for a vortex air pre-filter, aiming to solve the technical problems of water droplets entering the air pre-filter along with the gas and dust back-suction.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A protective cover for a vortex air pre-filter includes a mounting plate, an outer cover, and a plurality of buckling components for connecting the mounting plate and the outer cover. The vortex air pre-filter is located in the area surrounded by the mounting plate and the outer cover. The outer cover is provided with dust discharge holes corresponding to the positions of the dust discharge ports of the vortex air pre-filter. Flanges extending towards the outer cover are provided at the top and the two side edges of the mounting plate. The outer cover is provided with holding edges abutting against the flanges. The buckling components include buckles protruding outwards on the flanges and buckle holes on the holding edges matching the buckles. The cross-section of the outer cover in the horizontal direction is a U-shaped structure. The bottom of the outer cover extends below the intake port of the vortex air pre-filter.

[0008] Further, the buckle includes a rectangular hole provided on the flange and a first elastic piece provided on one side of the rectangular hole and capable of being inserted into the buckle hole. The first elastic piece includes a connecting portion, an inclined portion, and an abutting portion connected in sequence. The abutting portion is perpendicular to the buckle hole.

[0009] Further, the buckle includes a rectangular hole provided on the flanging and a second elastic piece provided at the bottom edge of the rectangular hole. The second elastic piece is of an L-shaped structure, the buckle hole is an L-shaped hole, and the bottom of the L-shaped hole extends to the edge position of the holding edge.

[0010] Further, a bending portion protruding towards the flanging is provided on the second elastic piece.

[0011] Further, an arc transition is provided at the connection between the top and the side wall of the outer cover.

[0012] Further, a transition inclined surface is provided between the upper and lower portions of the side wall of the outer cover.

[0013] Further, a rain shield is provided on the dust exhaust hole. The rain shield includes a mounting portion and a shielding portion provided on the mounting portion. A groove matching the dust exhaust hole is formed on the outer wall of the mounting portion, and the shielding portion is of a door-shaped structure.

[0014] Further, a rubber layer is provided between the inner top of the holding edge and the top of the flanging.

[0015] Further, it further includes a bracket for installing a vortex air pre-filter. Two first through holes are provided on the mounting plate, and two second through holes coaxial with the first through holes are provided on the bracket.

[0016] Beneficial effects: The vortex air pre-filter is installed inside the mounting plate and the outer cover to isolate the vortex air pre-filter from water, prevent water droplets from adhering to the outer surface of the vortex air pre-filter, and extend the water inlet path, which can prevent water droplets from entering the vortex air pre-filter due to negative pressure along with the gas. In addition, the dust and particles discharged by the vortex air pre-filter are discharged to the environment through the dust exhaust hole. The outer cover isolates the dust exhaust port and the air inlet of the vortex air pre-filter to prevent dust and impurities from returning to the air inlet. Description of the Drawings

[0017] Figure 1 It is a structural diagram of the protective cover of the vortex air pre-filter provided by the present utility model.

[0018] Figure 2 It is an exploded view of the protective cover of the vortex air pre-filter provided by the present utility model.

[0019] Figure 3 It is a side sectional view of the protective cover of the vortex air pre-filter provided by the present utility model.

[0020] Figure 4 It is a schematic diagram of the first embodiment of the buckling assembly in the protective cover of the vortex air pre-filter provided by the present utility model.

[0021] Figure 5Schematic diagram of the second embodiment of the fastening component in the protective cover of the vortex air pre-filter provided by the present utility model.

[0022] Main element symbol description: mounting plate 1, flanging 11, first through hole 12, outer cover 2, dust discharge hole 21, holding edge 22, transition slope 23, fastening component 3, buckle 31, rectangular hole 311, first elastic piece 312, connecting part 3121, inclined part 3122, abutting part 3123, second elastic piece 313, bending part 3131, fastening hole 32, rain shield 4, mounting part 41, groove 411, shielding part 42, rubber layer 5, bracket 6, second through hole 61, vortex air pre-filter a, air inlet a1, dust discharge port a2. Specific embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-5 , the present utility model provides a protective cover for a vortex air pre-filter, including a mounting plate 1, an outer cover 2, and a plurality of fastening components 3 for connecting the mounting plate 1 and the outer cover 2. The vortex air pre-filter is located in the area surrounded by the mounting plate 1 and the outer cover 2. A dust discharge hole 21 corresponding to the position of the dust discharge port of the vortex air pre-filter is provided on the outer cover 2; flangings 11 extending towards the outer cover 2 are provided at the top and both side edges of the mounting plate 1. The outer cover 2 is provided with a holding edge 22 that abuts against the flanging 11. The fastening component 3 includes a buckle 31 provided on the flanging 11 and protruding outwards, and a fastening hole 32 provided on the holding edge 22 and matching with the buckle 31; the cross-section of the outer cover 2 in the horizontal direction is a U-shaped structure; the bottom of the outer cover 2 extends below the air inlet of the vortex air pre-filter.

[0025] The vortex air pre-filter is installed in the area surrounded by the mounting plate 1 and the outer cover 2, and the bottom of the outer cover 2 extends below the air inlet of the vortex air pre-filter, which can prevent water droplets from adhering to the outer surface of the vortex air pre-filter and extend the air intake path, avoiding water droplets from entering the air inlet of the vortex air pre-filter along with the air. The dust and impurities discharged from the dust discharge port of the vortex air pre-filter are discharged into the environment through the dust discharge hole 21. Due to the isolation of the outer cover 2, dust and impurities are prevented from returning to the air inlet due to external factors.

[0026] In the above, by setting the flanging 11 and the holding edge 22 to abut against each other, the sealing performance between the mounting plate 1 and the outer cover 2 is improved, preventing rainwater from seeping into the area enclosed by the two. And the snap - on component 3 is conducive to the installation and disassembly of the outer cover 2, thereby facilitating the maintenance and replacement of the vortex air pre - filter.

[0027] In the above, the cross - section of the outer cover 2 in the horizontal direction is a U - shaped structure. Specifically, the side surface of the outer cover 2 is provided with an arc surface coaxial with the outer surface of the vortex air pre - filter. Through the arc - surface design, the structural strength of the outer cover 2 is improved, and it has an aesthetic appearance. More specifically, there is a gap between the vortex air pre - filter and the arc surface, and the vortex air pre - filter is separated from the outer cover 2. Even if some water droplets adhere to the inner wall of the outer cover 2, since there is no connection relationship between the vortex air pre - filter and the outer cover 2, the water droplets will not enter the pre - filter interior along with the intake air.

[0028] In this embodiment, it is preferably that there are four snap - on components 3, and the four snap - on components 3 are arranged symmetrically left and right. Among them, the snap - on component 3 has two implementation manners to realize the detachable connection between the outer cover 2 and the mounting plate 1.

[0029] In one implementation manner, referring to Figure 4 , the snap 31 includes a rectangular hole 311 provided on the flanging 11 and a first elastic piece 312 provided on one side of the rectangular hole 311 and capable of being snapped into the snap hole 32. The first elastic piece 312 includes a connecting portion 3121, an inclined portion 3122, and an abutting portion 3123 connected in sequence. The connecting portion 3121 is connected to the side of the rectangular hole 311 close to the outer cover 2, and the abutting portion 3123 is perpendicular to the snap hole 32. By using the upper and lower surfaces of the first elastic piece 312 to abut against the upper and lower inner side surfaces of the snap hole 32, and the abutting portion 3123 to abut against the side surface of the snap hole 32 away from the outer cover 2, the outer cover 2 is prevented from disengaging from the mounting plate 1. Specifically, the rectangular hole 311 and the first elastic piece 312 can be integrally formed by stamping equipment or fixed to the inner wall of the flanging 11 by welding. During installation, the outer cover 2 is pressed against the mounting plate 1 in a direction perpendicular to the mounting plate 1, the edge of the holding edge 22 is pressed against the first elastic piece 312, and the first elastic piece 312 deforms inward. When the snap hole 32 passes through the first elastic piece 312, the first elastic piece 312 resumes deformation and is snapped into the snap hole 32, realizing the installation of the outer cover 2 on the mounting plate 1. On the contrary, by pressing the first elastic piece 312 to make it deform and withdraw from the snap hole 32, the outer cover 2 can be pulled outwards at this time, realizing the separation of the outer cover 2 and the mounting plate 1.

[0030] In another implementation manner, referring to Figure 5, the buckle 31 includes a rectangular hole 311 provided on the flanging 11 and a second elastic piece 313 provided at the bottom edge of the rectangular hole 311. The second elastic piece 313 is an L-shaped structure. The buckle hole 32 is an L-shaped hole, and the bottom of the L-shaped hole extends to the edge position of the holding edge 22. Specifically, the width of the vertical section of the L-shaped hole is the same as the width of the second elastic piece 313, and the height of the horizontal section of the L-shaped hole is the same as the thickness of the second elastic piece 313. The second elastic piece 313 is inserted into the buckle hole 32. During installation, the horizontal section of the L-shaped hole is flush with the bottom of the second elastic piece 313, then the outer cover 2 is pushed towards the mounting plate 1, and then the outer cover 2 is pressed downwards so that the bottom of the second elastic piece 313 enters the vertical section of the L-shaped hole, realizing the installation of the outer cover 2 on the mounting plate 1; conversely, first lift the outer cover 2 upwards and then pull it outwards, so that the second elastic piece 313 exits the L-shaped hole, and the separation of the outer cover 2 from the mounting plate 1 can be realized.

[0031] Further, a bending portion 3131 protruding towards the flanging 11 is provided on the second elastic piece 313. The rectangular hole 311, the second elastic piece 313 and the bending plate located on the second elastic piece 313 can be integrally formed by stamping equipment. By providing the bending portion 3131, the second elastic piece 313 can be pressed tightly on the holding edge 22 to prevent the outer cover 2 from disengaging upwards.

[0032] In the above, the bending portion 3131 can be a V-shaped structure or a trapezoidal structure.

[0033] In a preferred embodiment, refer to Figure 1 , there is an arc transition at the connection between the top and the side wall of the outer cover 2. Through the above setting, stress concentration can be reduced, the structural stability of the outer cover 2 can be improved, and the appearance aesthetics can be improved.

[0034] In a preferred embodiment, refer to Figure 2 , a transition inclined surface 23 is provided between the upper and lower parts of the side wall of the outer cover 2. By providing the transition inclined surface 23, the area enclosed by the bottom of the side wall of the outer cover 2 is enlarged, thereby increasing the air intake range. In addition, the transition inclined surface 23 can enhance the structural strength of the outer cover 2.

[0035] In a preferred embodiment, refer to Figure 3 , a rain shield 4 is provided on the dust exhaust hole 21. The rain shield 4 includes a mounting portion 41 and a shielding portion 42 provided on the mounting portion 41. A groove 411 matching the dust exhaust hole 21 is formed on the outer wall of the mounting portion 41. The shielding portion 42 is a door-shaped structure. The door-shaped shielding portion 42 extends outwards, which can shield raindrops from splashing into the inner part of the outer cover 2 through the dust exhaust hole 21, and then adhere to the outer surface of the vortex air pre-filter.

[0036] In the above, the material of the rain shield 4 can be rubber, and it can be inserted into the dust exhaust hole 21 by extrusion, which is convenient for replacing the rain shield 4.

[0037] In a preferred embodiment, referring to Figure 2 , a rubber layer 5 is provided between the inner top of the edge-holding part 22 and the top of the flanging 11. Since the tops of both the edge-holding part 22 and the flanging 11 are flat surfaces, in rainy days, rainwater will penetrate into the interior of the outer cover 2 through the gap between the two flat surfaces. With the rubber layer 5 provided, the sealing performance between the edge-holding part 22 and the flanging 11 can be improved.

[0038] In this embodiment, the rubber layer 5 can be adhered to the top of the edge-holding part 22 or the inner top of the flanging 11.

[0039] In a preferred embodiment, referring to Figure 2 , it further includes a bracket 6 for installing a vortex air pre-filter. Two first through holes 12 are provided on the mounting plate 1, and two second through holes 61 coaxial with the first through holes 12 are provided on the bracket 6. During installation, screws are sequentially passed through the second through holes 61 and the first through holes 12 and then fixed at the position to be installed, so as to realize the unified installation of the vortex air pre-filter and the mounting plate 1, and improve the convenience of assembly.

[0040] It should be noted that the bracket 6 serves to support and fix the vortex air pre-filter. During actual use, it should be selected according to the vortex air pre-filter, so the specific structure of the bracket 6 is not limited.

[0041] It can be understood that for those of ordinary skill in the art, equivalent replacements or changes can be made according to the technical solution and the inventive concept of the present invention, and all such changes or replacements should fall within the protection scope of the present invention.

Claims

1. A protective cover for a vortex air pre-filter, characterized in that: It includes a mounting plate, an outer cover, and a plurality of buckle components for connecting the mounting plate and the outer cover, the vortex air pre-filter is located in the area surrounded by the mounting plate and the outer cover, the outer cover is provided with dust exhaust holes corresponding to the dust exhaust port position of the vortex air pre-filter; the top and two side edges of the mounting plate are provided with flanges extending toward the outer cover, the outer cover is provided with hugging edges abutting against the flanges, the buckle components include buckles provided on the flanges and protruding outward, and buckle holes provided on the hugging edges and matching with the buckles; the cross-section of the outer cover in the horizontal direction is a U-shaped structure; the bottom of the outer cover extends to below the air inlet of the vortex air pre-filter.

2. The protective cover of the vortex air pre-filter according to claim 1, characterized in that: The buckle comprises a rectangular hole arranged on the flange, and a first elastic piece arranged on one side of the rectangular hole and capable of being inserted into the buckle hole. The first elastic piece comprises a connecting portion, an inclined portion and an abutting portion which are connected in sequence, and the abutting portion is perpendicular to the buckle hole.

3. The protective cover of the vortex air pre-filter according to claim 1, characterized in that: The buckle includes a rectangular hole arranged on the flange, and a second spring piece arranged on the bottom edge of the rectangular hole, the second spring piece is an L-shaped structure, the buckle hole is an L-shaped hole, and the bottom of the L-shaped hole extends to the edge of the hugging edge.

4. The protective cover of the vortex air pre-filter according to claim 3, characterized in that: The second elastic sheet is provided with a bending portion protruding toward the flange.

5. The protective cover of the vortex air pre-filter according to claim 2 or 3, characterized in that: The connection between the top and the side wall of the outer cover has an arc transition.

6. The protective cover of the vortex air pre-filter according to claim 2 or 3, characterized in that: A transition slope is provided between the upper portion and the lower portion of the outer cover side wall.

7. The protective cover of the vortex air pre-filter according to claim 2 or 3, characterized in that: The dust discharge hole is provided with a rain shield block, which comprises a mounting portion and a shielding portion arranged on the mounting portion, the outer wall of the mounting portion is provided with a groove matching the dust discharge hole, and the shielding portion is a door-type structure.

8. The protective cover of the vortex air pre-filter according to claim 2 or 3, characterized in that: A rubber layer is provided between the inner top of the hugging edge and the top of the turning edge.

9. The protective cover of the vortex air pre-filter according to claim 2 or 3, characterized in that: It also includes a bracket for mounting the vortex air pre-filter, wherein the mounting plate is provided with two first through holes, and the bracket is provided with two second through holes coaxial with the first through holes.

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