Stable air filter

Abstract

The utility model discloses a stable type air filter which comprises an outer frame, a first step groove extending in the circumferential direction is formed in the inner edge of the back face of the outer frame, second step grooves are formed in the upper side and the lower side of the first step groove, pressing strips are arranged in the second step grooves, and the outer sides of the pressing strips are flush with the step face of the first step groove. Folded air filter paper is inserted between the two pressing strips, positioning recesses are formed in the step surfaces of the left side and the right side of the first step groove, extending parts capable of being positioned in the positioning recesses are arranged at the left end and the right end of the folded air filter paper, a plurality of first through holes are formed in the extending parts, and first screw holes corresponding to the first through holes are formed in the step surfaces of the first step groove; a pressing frame matched with the first step groove is arranged in the first step groove, a plurality of second through holes are formed in the pressing frame, and first bolts which penetrate through the first through holes and are in threaded connection with the first screw holes are inserted into the second through holes. According to the stable air filter, the folded air filter paper can be stably positioned, and the use stability of the stable air filter is improved.

Description

Technical Field

[0001] The utility model relates to an automobile air filter, in particular to a stable air filter. Background Art

[0002] The air filter is located inside the hood of the car, close to the engine. Its main responsibility is to filter the air entering the engine, removing dust, impurities and other particulate matter in the air to protect the engine from damage.

[0003] Chinese patent CN201220050093.5 discloses a rectangular air filter element, including a frame and a filter element body fixed in the frame, the filter element body is a filter fold folded from non-woven fabric, fiber cloth, gauze or a combination of two or three thereof, the surface of the filter fold has a cured adhesive layer, three parallel rows of anti-adhesion blocks parallel to the frame are fixed between two adjacent folded surfaces on the upper and lower sides of the filter fold close to the folded edges, and the anti-adhesion blocks are hot-melt wire adhesive melted between the filter folds.

[0004] Both ends of the filter element in the rectangular air filter element are fixed to the frame by gluing. As the use time increases, the bonding parts are prone to cracking or debonding, resulting in unstable use. Therefore, there is an urgent need to provide a stable air filter in which the filter folds can be stably installed. Utility Model Content

[0005] The utility model aims to provide a stable air filter, which can stably position folded air filter paper and improve the stability of its use.

[0006] In order to achieve the above-mentioned objectives, the utility model provides a stable air filter, which includes an outer frame, an inner edge of the back side of the outer frame is provided with a first step groove extending circumferentially, a second step groove is provided on the upper and lower sides of the first step groove, a pressure strip is provided in the second step groove, the outer side of the pressure strip is set to be flush with the step surface of the first step groove, a folded air filter paper is inserted between the two pressure strips, positioning recesses are provided on the step surfaces on the left and right sides of the first step groove, and extensions that can be positioned in the positioning recesses are provided on the left and right ends of the folded air filter paper, a plurality of first through holes are provided on the extension parts, a first screw hole corresponding to the first through hole is provided on the step surface of the first step groove, a pressure frame matching with the first step groove is provided in the first step groove, a plurality of second through holes are provided on the pressure frame, and a first bolt that passes through the first through hole and is screwed to the first screw hole is inserted into the second through hole.

[0007] Preferably, the pressure strip is provided with a bending groove for inserting the folded air filter paper, and both ends of the bending groove are provided with ports for extending the extension portion.

[0008] Preferably, the second through hole is a countersunk hole, and the first bolt is a hexagon socket bolt.

[0009] Preferably, a right-angle groove is provided at the upper end of the front face of the outer frame, and guide grooves are provided on the left, right and bottom sides of the outer frame, and the guide grooves extend to the bottom surface of the right-angle groove; a filter plate is inserted into the guide groove, and a mounting plate installed in the right-angle groove is provided on the top of the filter plate, a second screw hole is provided on the right-angle groove, and a third through hole coaxial with the second screw hole is provided on the mounting plate, and a second bolt threaded into the second screw hole is inserted into the third through hole.

[0010] Preferably, a positioning groove is provided at the upper end of the third through hole, a positioning column capable of being fitted and inserted into the positioning groove is provided on the bottom surface of the mounting plate, and the third through hole is provided to penetrate the positioning column along the axial direction.

[0011] Preferably, the third through hole is a countersunk hole, and the second bolt is a hexagon socket bolt.

[0012] Preferably, an interlayer is provided in the middle of the filter plate, and the interlayer is filled with activated carbon particles.

[0013] Preferably, the filter plate includes a U-shaped frame fixed to the mounting plate, a third step groove is provided on the inner side of the U-shaped frame, a bottom mesh plate and an outer mesh plate are sequentially mounted in the third step groove, the interlayer is formed between the bottom mesh plate and the outer mesh plate, and the outer surface of the outer mesh plate is flush with the outer surface of the third step groove.

[0014] Preferably, a rectangular frame is embedded in the interlayer, and a plurality of activated carbon particle accommodating areas are formed in the rectangular frame by dividing the rectangular frame by a plurality of partitions.

[0015] Preferably, the bottom mesh plate includes a frame, a filter is provided on the bottom side of the frame, wing plates mounted on the third step groove are provided at the left and right ends of the top side of the frame, positioning holes are provided on the wing plates, and positioning bosses that can be inserted into the positioning holes are provided on the outer mesh plate.

[0016] According to the above technical scheme, the utility model provides a stable air filter, which includes an outer frame, an inner edge of the back side of the outer frame is provided with a first step groove extending circumferentially, a second step groove is provided on the upper and lower sides of the first step groove, a pressure strip is provided in the second step groove, the outer side of the pressure strip is set to be flush with the step surface of the first step groove, a folded air filter paper is inserted between the two pressure strips, positioning recesses are provided on the step surfaces on the left and right sides of the first step groove, and extensions that can be positioned in the positioning recesses are provided on the left and right ends of the folded air filter paper, a plurality of first through holes are provided on the extension part, a first screw hole corresponding to the first through hole is provided on the step surface of the first step groove, a pressure frame matching with the first step groove is provided in the first step groove, a plurality of second through holes are provided on the pressure frame, and a first bolt that passes through the first through hole and is screwed to the first screw hole is inserted into the second through hole.

[0017] When assembling the stable air filter, first insert the pressure strips at both ends into the two ends of the folded air filter paper to limit the position of the folded air filter paper, and then put the two pressure strips and the folded air filter paper connected thereto into the outer frame, so that the pressure strips are set in the second step groove, and the extension part extends from the side of the pressure strip and is set in the positioning recess, and then install the pressing frame so that the pressing frame is pressed on the two pressure strips and the extension part to tighten the pressure strips and the extension part, and then pass the first bolt through the second through hole and the first through hole in sequence and then screw it into the first screw hole to lock it.

[0018] The assembled stable air filter has the following beneficial effects: 1. The position of the folded air filter paper can be limited by the pressure strips arranged at both ends of the folded air filter paper, thereby increasing its stability in use; 2. The pressure strip and the extension part can be compressed at the same time by the pressing frame, thereby further improving the stability in use; 3. The folded air filter paper is made removable by the first bolt, thereby facilitating replacement.

[0019] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of a stable air filter;

[0022] Figure 2 It is a schematic diagram of the structure of the stable air filter after the filter plate is pulled up;

[0023] Figure 3 It is a schematic diagram of the expanded structure of a preferred embodiment of a stable air filter;

[0024] Figure 4 It is a structural diagram of the corresponding relationship between the rectangular frame and the partition and the outer mesh plate;

[0025] Figure 5 It is a schematic diagram of the back structure of the bottom stencil;

[0026] Figure 6 It is a schematic diagram of the front structure of the bottom stencil;

[0027] Figure 7 It is a schematic diagram of the connection structure between the mounting plate and the U-shaped frame;

[0028] Figure 8 It is a structural schematic diagram of a preferred embodiment of folded air filter paper;

[0029] Fig. 9 It is a structural schematic diagram of a preferred embodiment of the layering strip;

[0030] Fig.10 yes Fig. 9 Schematic diagram of the enlarged structure of the A area in the middle;

[0031] Fig.11 It is a schematic diagram of the accommodation of activated carbon particles in one of the activated carbon particle accommodation areas.

[0032] Description of Reference Numerals

[0033] 1-outer frame; 2-pressing frame; 3-folded air filter paper; 4-first bolt; 5-mounting plate; 6-second bolt; 7-positioning column; 8-right angle groove; 9-positioning groove; 10-U-shaped frame; 11-outer mesh plate; 12-guide groove; 13-pressing strip; 14-extension portion; 15-first through hole; 16-first step groove; 17-second step groove; 18-positioning depression; 19-first screw hole; 20-positioning boss; 21-partition; 22-positioning hole; 23-wing plate; 24-frame; 25-filter screen; 26-third step groove; 27-rectangular frame; 28-bending groove; 29-port; 30-activated carbon particles; 31-activated carbon particle storage area. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0035] In the present utility model, unless otherwise stated, directional words contained in terms such as "up, down, left, right, front, back, inside, outside" merely represent the orientation of the terms in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the terms.

[0036] See also Figure 1-11 The stable air filter shown in the figure comprises an outer frame 1, the inner edge of the back side of the outer frame 1 is provided with a first step groove 16 extending circumferentially, the upper and lower sides of the first step groove 16 are provided with a second step groove 17, a pressure strip 13 is provided in the second step groove 17, the outer side of the pressure strip 13 is arranged to be flush with the step surface of the first step groove 16, a folded air filter paper 3 is inserted between the two pressure strips 13, positioning recesses 18 are arranged on the step surfaces on the left and right sides of the first step groove 16, and the left and right ends of the folded air filter paper 3 are provided with extensions 14 that can be positioned in the positioning recesses 18, a plurality of first through holes 15 are arranged on the extension 14, a first screw hole 19 corresponding to the first through hole 15 is arranged on the step surface of the first step groove 16, a pressure frame 2 cooperating with it is arranged in the first step groove 16, a plurality of second through holes are arranged on the pressure frame 2, and a first bolt 4 that passes through the first through hole 15 and is screwed to the first screw hole 19 is inserted into the second through hole.

[0037] Through the implementation of the above technical solution, when assembling the stable air filter, the pressure strips 13 at both ends are first inserted into the two ends of the folded air filter paper 3 to limit the position of the folded air filter paper 3, and then the two pressure strips 13 and the folded air filter paper 3 connected thereto are placed into the outer frame 1 together, so that the pressure strip 13 is arranged in the second step groove 17, and the extension portion 14 extends from the side of the pressure strip 13 and is arranged in the positioning recess 18, and then the pressing frame 2 is installed, so that the pressing frame 2 is pressed on the two pressure strips 13 and the extension portion 14, the pressure strip 13 and the extension portion 14 are pressed, and the first bolt 4 is passed through the second through hole and the first through hole 15 in sequence and then screwed into the first screw hole 19 to lock it. The assembled stable air filter can limit the position of the folded air filter paper 3 by means of the pressure strips 13 arranged at both ends of the folded air filter paper 3, thereby increasing its stability in use; the pressure strip 13 and the extension portion 14 can be simultaneously compressed by the pressing frame 2, thereby further improving the stability in use; the folded air filter paper 3 can be made removable by means of the first bolt 4, thereby facilitating replacement.

[0038] In this embodiment, see Fig. 9 and Fig.10As shown, the pressure strip 13 is provided with a bending groove 28 for inserting the folded air filter paper 3, and the two ends of the bending groove 28 are provided with ports 29 for extending the extension part 14. When assembling the folded air filter paper 3, the ends of the folded air filter paper 3 are inserted into the bending groove 28 to limit the folded air filter paper 3. Of course, in order to allow the extension parts 14 at both ends of the folded air filter paper 3 to extend into the positioning recess 18, the port 29 should be set at a position close to the pressing frame 2, so that after the extension part 14 is positioned in the positioning recess 18, the outer side of the extension part 14 can be kept flush with the step surface of the first step groove 16, so that the pressing frame 2 can be better pressed.

[0039] In this embodiment, in order to further provide a second through hole and a first bolt 4, the second through hole is a countersunk hole, and the first bolt 4 is a hexagon socket bolt.

[0040] In this embodiment, a right angle groove 8 is provided at the upper end of the front face of the outer frame 1, and guide grooves 12 are provided on the left, right and bottom sides of the outer frame 1, and the guide grooves 12 extend to the bottom surface of the right angle groove 8; a filter plate is inserted into the guide groove 12, and a mounting plate 5 mounted in the right angle groove 8 is provided on the top of the filter plate, and a second screw hole is provided on the right angle groove 8, and a third through hole coaxial with the second screw hole is provided on the mounting plate 5, and a second bolt 6 screwed in the second screw hole is inserted into the third through hole. Through such a setting, the air that can enter through the front filter plate is pre-filtered, and the filter plate is moved vertically during assembly, and is positioned in the lower guide groove 12 under the guidance of the guide grooves 12 on both sides, and the mounting plate 5 can be just set in the right angle groove 8, and then the second bolt 6 passes through the third through hole and is screwed in the second screw hole to fix the position of the filter plate.

[0041] In this embodiment, a positioning groove 9 is provided at the upper end of the third through hole, a positioning column 7 that can be inserted into the positioning groove 9 is provided on the bottom surface of the mounting plate 5, and the third through hole is axially penetrated through the positioning column 7. Through such a setting, the cooperation between the positioning column 7 and the positioning groove 9 plays a role of pre-positioning, which facilitates the installation of the second bolt 6, wherein the second screw hole is located at the bottom of the positioning groove 9, and is not shown in the figure because it is a conventional screw hole structure.

[0042] In this embodiment, in order to further provide a third through hole and a second bolt 6, the third through hole is a countersunk hole, and the second bolt 6 is a hexagon socket bolt.

[0043] In this embodiment, a sandwich is provided in the middle of the filter plate, and the sandwich is filled with activated carbon particles 30. The diameter of the activated carbon particles 30 should be larger than the diameter of the filter holes on both sides to avoid leakage. The filled activated carbon particles 30 can adsorb and remove organic and inorganic pollutants in the air, such as harmful gases, odors, heavy metal ions and organic compounds.

[0044] In this embodiment, in order to further provide a filter plate, the filter plate includes a U-shaped frame 10 fixedly connected to the mounting plate 5, a third step groove 26 is provided inside the U-shaped frame 10, a bottom mesh plate and an outer mesh plate 11 are sequentially mounted in the third step groove 26, the interlayer is formed between the bottom mesh plate and the outer mesh plate 11, and the outer surface of the outer mesh plate 11 is flush with the outer surface of the third step groove 26. When assembling, the bottom mesh plate is first mounted on the third step groove 26, and then the outer mesh plate 11 is mounted on the bottom mesh plate, and finally the whole is inserted into the guide groove 12, and the bottom mesh plate and the outer mesh plate 11 are limited and pressed together by the guide groove 12.

[0045] In this embodiment, in order to further provide a sandwich structure, a rectangular frame 27 is embedded in the sandwich, and the rectangular frame 27 is divided into a plurality of activated carbon particle accommodating areas 31 by a plurality of partitions 21. Figure 4 As shown, several partitions 21 are continuously connected to form a honeycomb-shaped structure. During assembly, the activated carbon particles 30 are filled in each hexagonal activated carbon particle accommodating area 31, and then covered with the outer mesh plate 11 to confine the activated carbon particles 30 between the bottom mesh plate and the outer mesh plate 11.

[0046] In this embodiment, in order to further provide a bottom mesh plate, the bottom mesh plate includes a frame 24, a filter screen 25 is arranged on the bottom side of the frame 24, and wing plates 23 mounted on the third step groove 26 are arranged at the left and right ends of the top side of the frame 24, and positioning holes 22 are arranged on the wing plates 23, and positioning posts 7 that can be inserted into the positioning holes 22 are arranged on the outer mesh plate 11. Through such a setting, the wing plates 23 are pressed against the edge of the outer mesh plate 11, and the relative position between the bottom mesh plate and the outer mesh plate 11 will not move laterally through the cooperation of the positioning posts 7 and the positioning holes 22, so that it is more stable.

[0047] The folded air filter paper 3 in the utility model is the same as the folded air filter paper 3 used in conventional air filters, and is made of HEPA material. Fig.11 As shown, the activated carbon particles 30 are preferably spherical particles with a diameter larger than the diameter of the filter holes on both sides, but there is no limitation on the use of particles of other shapes as long as they cannot leak out of the filter holes on both sides.

[0048] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0049] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0050] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A stable air filter, characterized in that: The stable air filter comprises an outer frame (1), the inner edge of the back side of the outer frame (1) is provided with a first step groove (16) extending in the circumferential direction, and the upper side and the lower side of the first step groove (16) are provided with a second step groove (17); A pressure strip (13) is arranged in the second step groove (17), the outer side of the pressure strip (13) is arranged to be flush with the step surface of the first step groove (16), and a folded air filter paper (3) is inserted between the two pressure strips (13); Positioning recesses (18) are provided on the step surfaces on the left and right sides of the first step groove (16); and extension portions (14) capable of being positioned in the positioning recesses (18) are provided on the left and right ends of the folded air filter paper (3); and a plurality of first through holes (15) are provided on the extension portions (14); A first screw hole (19) corresponding to the first through hole (15) is arranged on the step surface of the first step groove (16), a pressure frame (2) matching with the first step groove (16) is arranged in the first step groove (16), a plurality of second through holes are arranged on the pressure frame (2), and a first bolt (4) passing through the first through hole (15) and screwed to the first screw hole (19) is inserted into the second through hole.

2. The stable air filter according to claim 1, characterized in that: The pressure strip (13) is provided with a bending groove (28) for inserting the folded air filter paper (3), and both ends of the bending groove (28) are provided with ports (29) for extending the extension part (14).

3. The stable air filter according to claim 1, characterized in that: The second through hole is a countersunk hole, and the first bolt (4) is a hexagon socket bolt.

4. The stable air filter according to any one of claims 1 to 3, characterized in that: A right-angle groove (8) is provided at the upper end of the front face of the outer frame (1); Guide grooves (12) are provided on the left, right and bottom sides of the outer frame (1), and the guide grooves (12) extend to the bottom surface of the right-angle groove (8); A filter plate is inserted into the guide groove (12), and a mounting plate (5) mounted in the right-angle groove (8) is provided on the top of the filter plate; The right-angle groove (8) is provided with a second screw hole, and the mounting plate (5) is provided with a third through hole coaxial with the second screw hole; A second bolt (6) is inserted into the third through hole and is screwed into the second screw hole.

5. The stable air filter according to claim 4, characterized in that: A positioning groove (9) is provided at the upper end of the third through hole; The bottom surface of the mounting plate (5) is provided with a positioning column (7) that can be fitted and inserted into the positioning groove (9), and the third through hole is provided to penetrate the positioning column (7) along the axial direction.

6. The stable air filter according to claim 5, characterized in that: The third through hole is a countersunk hole, and the second bolt (6) is a hexagon socket bolt.

7. The stable air filter according to claim 4, characterized in that: An interlayer is arranged in the middle of the filter plate, and the interlayer is filled with activated carbon particles (30).

8. The stable air filter according to claim 7, characterized in that: The filter plate comprises a U-shaped frame (10) fixedly connected to the mounting plate (5); A third step groove (26) is provided inside the U-shaped frame (10), and a bottom mesh plate and an outer mesh plate (11) are sequentially mounted inside the third step groove (26); The interlayer is formed between the bottom mesh plate and the outer mesh plate (11), and the outer surface of the outer mesh plate (11) is flush with the outer surface of the third step groove (26).

9. The stable air filter according to claim 8, characterized in that: A rectangular frame (27) is embedded in the interlayer, and a plurality of activated carbon particle accommodating areas (31) are formed by dividing the rectangular frame (27) by a plurality of partitions (21).

10. The stable air filter according to claim 8, characterized in that: The bottom mesh plate comprises a frame (24), and a filter (25) is arranged on the bottom side of the frame (24); The left and right ends of the top side of the frame (24) are provided with wing plates (23) mounted on the third step groove (26); The wing plate (23) is provided with a positioning hole (22), and the outer layer mesh plate (11) is provided with a positioning column (7) capable of being inserted into the positioning hole (22).

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