Novel air filter element and air filter

Abstract

The utility model discloses a novel air filter element, belongs to the technical field of air filters, and solves the problem that when a spiral line of an existing air filter element is coated with filter paper, the thread end of the spiral line is easy to loosen, and the use is influenced. The filter comprises an upper end cover and a lower end cover, filter paper is installed between the upper end cover and the lower end cover, a spiral line is wound on the outer wall of the filter paper, the spiral line is pasted on the filter paper through an adhesive, installation grooves are formed in the opposite sides of the upper end cover and the lower end cover, and the filter paper is inserted into the corresponding installation grooves of the upper end cover and the lower end cover. The filter paper is pasted and fixed in the mounting groove through glue, and the two ends of the spiral line extend into the groove bottom of the mounting groove; a supporting frame is arranged on the lower end cover, and the outer wall of the supporting frame is attached to the inner wall of the filter paper. According to the air filter element disclosed by the utility model, the spiral line can be better fixed, and the service life of the air filter element is further prolonged. The utility model further discloses a novel air filter.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, and more specifically, to a novel air filter element and an air filter. Background Art

[0002] The air filter is an essential part of the engine. It is installed in front of the intake pipe to filter out dust and sand in the air, ensuring that sufficient and clean air enters the cylinder. The air filter generally includes an air filter element and a shell, and the air filter element is the core component of the air filter. For traditional cylindrical air filters, the filter paper cross-section of the air filter element is generally designed as a daisy-shaped structure. Under the condition of a certain external size, this structure maximizes the filtration area to achieve the purpose of increasing the service life. However, since there is no constraint between the folds of the filter paper, it is very easy to deform and form folds under the impact of airflow, resulting in a significant reduction in the effective filtration area and ultimately shortening its service life.

[0003] After searching the prior art, it was found that in order to overcome this shortcoming, some existing air filter elements have annular tapes arranged on the outer wall of the filter paper, such as a new air filter element disclosed in the announcement number: CN 206621900 U, which uses tapes to fix the tooth shape so that a certain distance is maintained between the teeth. Some air filter elements also have spiral wires and adhesives wrapped around the outer wall of the filter paper, such as an air filter element disclosed in the announcement number: CN2605052Y, which solves the problem of folding and bending of the filter paper in the existing filter element and maximizes the service life of the filter element.

[0004] After analyzing the existing technology, it is found that the structure of spiral wire plus adhesive wrapped around the outer wall of filter paper has a better fixing effect. However, the existing spiral wire is fixed to the outer wall of filter paper by adhesive. Since the two ends of the spiral wire are not tightened, the thread ends of the spiral wire are easy to loosen after long-term use, affecting the use of the filter element, especially for some air filter elements used in self-cleaning air filters. During the cleaning process, the backwash airflow hits the outside of the filter paper from the inside of the filter paper, and the thread ends of the spiral wire are more likely to loosen.

[0005] Therefore, it is urgent to design a novel air filter element and air cleaner to solve the above-mentioned technical problems. Utility Model Content

[0006] The technical problem to be solved by the utility model is to solve the above-mentioned deficiencies in the prior art, and one of its purposes is to provide a new type of air filter element, which can better fix the spiral wire and further extend the service life of the air filter element.

[0007] The second purpose is to provide a novel air filter that can better filter impurities in the air.

[0008] The first technical solution of the utility model is as follows: a new type of air filter element, including an upper end cover and a lower end cover, filter paper is installed between the upper end cover and the lower end cover, the outer wall of the filter paper is wrapped with a spiral wire, and the spiral wire is adhered to the filter paper by an adhesive, and mounting grooves are provided on the opposite sides of the upper end cover and the lower end cover, the filter paper is inserted into the mounting grooves corresponding to the upper end cover and the lower end cover, and the filter paper is fixed in the mounting grooves by glue, and the two ends of the spiral wire extend to the bottom of the mounting groove; a support frame is provided on the lower end cover, and the outer wall of the support frame fits with the inner wall of the filter paper.

[0009] As a further improvement, the spiral wire is at least one nylon wire or cotton wire, the adhesive wraps the spiral wire, and the adhesive is inserted between the folds of the filter paper.

[0010] Furthermore, the top surface of the support frame is flush with the top surface of the filter paper.

[0011] Furthermore, the support frame includes multiple support rings and multiple support rods, the multiple support rings are spaced apart along the axial direction of the filter paper, the multiple support rods are evenly fixed on the multiple support rings, and the support ring at the bottom is fixedly connected to the lower end cover.

[0012] Furthermore, the top of each support rod is an inclined rod structure inclined toward the center of the support frame.

[0013] Furthermore, at least two connecting strips are provided at the bottom of the upper end cover, and the connecting strips are located on the inner side of the support frame. A protrusion is provided on the outer side of the bottom of each connecting strip. After the filter paper is installed on the upper end cover, the upper part of the protrusion is clamped on the bottom of the support ring.

[0014] Furthermore, both the upper and lower parts of the protrusion are provided with arc-shaped surfaces, and the curvature of the arc-shaped surface corresponding to the upper part of the protrusion is greater than the curvature of the arc-shaped surface corresponding to the lower part.

[0015] Furthermore, a groove is provided on the top of the upper end cover, and a pull rod is provided in the groove.

[0016] The second technical solution of the present utility model is as follows: a novel air filter comprises the air filter element described above.

[0017] Beneficial Effects

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. The air filter element of the utility model is convenient for positioning and installing the filter paper between the upper end cover and the lower end cover by arranging installation grooves on the upper end cover and the lower end cover, and the ends of the spiral wires are cleverly placed in the installation grooves. When the glue solidifies, the ends of the spiral wires can be fixed between the filter paper and the upper end cover and the lower end cover, which can better fix the spiral wires and prevent the problems of the ends of the spiral wires from loosening, thereby further extending the service life of the air filter element.

[0020] 2. The air filter element of the utility model can support the inner side of the filter paper by arranging a support frame on the inner side of the filter paper to meet the air intake demand. At the same time, the spiral line fixes the outer wall of the filter paper, and the support frame positions and supports the structure of the inner side of the filter paper, which can effectively prevent the filter paper from deforming and further extend the service life of the air filter element.

[0021] 3. The air filter element of the utility model is provided with a connecting strip and a protrusion at the bottom of the upper end cover, and the protrusion is clamped on the support ring of the support frame, so that the upper end cover and the lower end cover are both detachable structures and connected together, thereby improving the structural strength of the air filter element. When disassembling and assembling the air filter element, the axial pulling force or thrust is provided by the support frame, which can avoid deformation of the filter paper and further extend the service life of the air filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A;

[0025] Figure 4 for Figure 2 A schematic diagram of the structure enlarged at B in the middle;

[0026] Figure 5 It is a structural schematic diagram of the support frame and the lower end cover in the utility model;

[0027] Figure 6 It is a structural schematic diagram of the connecting strip and the upper end cover in the utility model.

[0028] Among them: 1-upper end cover, 2-lower end cover, 3-filter paper, 4-spiral line, 5-adhesive, 6-installation groove, 7-support frame, 8-connecting strip, 9-bump, 10-groove, 11-pull rod, 71-support ring, 72-support rod. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0030] See also Figure 1-6 The utility model discloses a novel air filter element, comprising an upper end cover 1 and a lower end cover 2, a filter paper 3 is installed between the upper end cover 1 and the lower end cover 2, a spiral wire 4 is wound around the outer wall of the filter paper 3, and the spiral wire 4 is adhered to the filter paper 3 through an adhesive 5 to fix the filter paper 3, so that the filter paper 3 will not be folded and the structural rigidity of the filter paper is improved. The upper end cover 1 and the lower end cover 2 are provided with mounting grooves 6 on the opposite side. The mounting grooves 5 are provided on the outer edges of the upper end cover 1 and the lower end cover 2. The filter paper 3 is inserted into the mounting grooves 6 corresponding to the upper end cover 1 and the lower end cover 2, which plays the role of positioning and installing the filter paper 3, and the filter paper 3 is fixed in the mounting grooves 6 by gluing. Specifically, during assembly, glue can be applied to the mounting grooves 6 of the lower end cover 2, and then one end of the filter paper 3 is inserted into the mounting grooves 6, and then glue is applied to the mounting grooves 6 of the upper end cover 1, and then the other end of the filter paper 3 is inserted into the mounting grooves 6. After cooling, the installation of the filter paper 3 can be completed. The two ends of the spiral wire 4 extend to the bottom of the mounting grooves 6. During specific installation, the ends of the filter paper 3 are straightened at the two ends of the spiral wire 4. When the filter paper 3 is inserted into the mounting grooves 6, the thread ends of the spiral wire 4 can be fixed in the mounting grooves 6, so that the problem of the thread ends of the spiral wire 4 being loose can be avoided.

[0031] The air filter element of the present invention is convenient for positioning and installing the filter paper 3 between the upper end cover 1 and the lower end cover 2 by arranging the installation groove 6 on the upper end cover 1 and the lower end cover 2, and the thread end of the spiral wire 4 is cleverly placed in the installation groove 6. When the glue solidifies, the thread end of the spiral wire 4 can be fixed between the filter paper 3 and the upper end cover 1 and the lower end cover 2, which can better fix the spiral wire 4 and prevent the problem of the spiral wire end loosening, thereby further extending the service life of the air filter element.

[0032] Preferably, a support frame 7 is provided on the lower end cover 2 , and the outer wall of the support frame 7 is in contact with the inner wall of the filter paper 3 , so as to position and fix the inner wall of the filter paper 3 .

[0033] The air filter element of the utility model can support the inner side of the filter paper 3 by arranging a support frame 7 on the inner side of the filter paper 3 to meet the air intake demand. At the same time, its spiral line 4 fixes the outer wall of the filter paper 3, and the support frame 7 positions the structure of supporting the inner side of the filter paper 3, which can effectively prevent the filter paper from being deformed and further extend the service life of the air filter element.

[0034] Preferably, the spiral wire 4 is at least one nylon wire or cotton wire, and the adhesive 5 covers the spiral wire 4 to improve the winding stability of the spiral wire 4, and the adhesive 5 is inserted between the folds of the filter paper 3 to further prevent the folding phenomenon.

[0035] Preferably, the top surface of the support frame 7 is flush with the top surface of the filter paper 3. When the filter paper 3 is pressed against the upper end cover 1, the support frame 7 just contacts with the upper end cover 1, thus preventing the filter paper 3 from being deformed by compression.

[0036] Preferably, the support frame 7 includes a plurality of support rings 71 and a plurality of support rods 72, wherein the plurality of support rings 71 are arranged at intervals along the axial direction of the filter paper 3, and the plurality of support rods 72 are evenly fixed on the plurality of support rings 71, and the support ring 71 at the bottom is fixedly connected to the lower end cover 2. The support frame 7 structure composed of the support rings 71 and the support rods 72 arranged at intervals can greatly increase the air permeability area while meeting the requirements of supporting the filter paper 3, ensure smooth entry, and reduce the weight of the entire filter element. Furthermore, the top of each support rod 72 is an inclined rod structure inclined toward the center of the support frame 7, so that the diameter of the top of the support frame 7 is relatively small, which plays a guiding role in inserting the filter paper 3 and facilitates the installation of the filter paper.

[0037] Preferably, at least two connecting strips 8 are provided at the bottom of the upper end cover 1, and the connecting strips 8 are arranged in a staggered manner with the support rods 72 of the support frame 7 to avoid interference; the connecting strips 8 are located on the inner side of the support frame 7, and a protrusion 9 is provided on the outer side of the bottom of each connecting strip 8. After the filter paper 3 is installed on the upper end cover 1, the upper part of the protrusion 9 is clamped on the bottom of the support ring 71, so that the upper end cover 1 and the support frame 7 are connected together, and the upper end cover 1 cannot be separated from the filter paper 3. During installation, press the connecting strip 8 toward the center of the upper end cover 1, so that the support frame 7 can go over the protrusion 9 and be sleeved on the connecting strip 8 to achieve installation.

[0038] The air filter element of the utility model is provided with a connecting strip 8 and a protrusion 9 at the bottom of the upper end cover 1, and the protrusion 9 is clamped on the support ring 71 of the support frame 7, so that the upper end cover 1 and the lower end cover 2 are both detachable structures and connected together, thereby improving the structural strength of the air filter element. When disassembling and assembling the air filter element, the axial pulling force or thrust is provided by the support frame, which can avoid deformation of the filter paper and further extend the service life of the air filter element.

[0039] Preferably, arcuate surfaces are provided on the upper and lower parts of the protrusion 9, and the arcuate surfaces are used to contact the support ring 71. With such a structure, during assembly, it is only necessary to directly insert the support frame 7 and the filter paper 3 into the mounting groove 6 of the upper end cover 1. As the arcuate surface contacts the support ring 71, the support ring 71 will directly pass over the protrusion 9 along the arcuate surface to achieve snap-on installation. No external force is required to squeeze the connecting strip 8, and assembly is more convenient. Moreover, the curvature of the arcuate surface corresponding to the upper part of the protrusion 9 is greater than that of the arcuate surface corresponding to the lower part, which makes it easier to assemble the filter paper 3, while the upper end cover 1 is difficult to be pulled out.

[0040] Preferably, a groove 10 is provided on the top of the upper end cover 1, and a pull rod 11 is provided in the groove 10, so that the air filter element can be easily pulled out when the air filter element is maintained.

[0041] A novel air filter comprises the air filter element described above. The air filter element can better filter impurities in the air.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A novel air filter element, comprising an upper end cover (1) and a lower end cover (2), wherein a filter paper (3) is installed between the upper end cover (1) and the lower end cover (2), a spiral wire (4) is wound around the outer wall of the filter paper (3), and the spiral wire (4) is adhered to the filter paper (3) by an adhesive (5), characterized in that: The upper end cover (1) and the lower end cover (2) are both provided with mounting grooves (6) on opposite sides thereof; the filter paper (3) is inserted into the mounting grooves (6) corresponding to the upper end cover (1) and the lower end cover (2), and the filter paper (3) is fixed in the mounting grooves (6) by gluing, and the two ends of the spiral line (4) extend to the bottom of the mounting groove (6); the lower end cover (2) is provided with a support frame (7), and the outer wall of the support frame (7) is in contact with the inner wall of the filter paper (3).

2. A novel air filter element according to claim 1, characterized in that: The spiral wire (4) is at least one nylon wire or cotton wire, the adhesive (5) covers the spiral wire (4), and the adhesive (5) is inserted between the folds of the filter paper (3).

3. A novel air filter element according to claim 1, characterized in that: The top surface of the support frame (7) is flush with the top surface of the filter paper (3).

4. A novel air filter element according to claim 1, characterized in that: The support frame (7) comprises a plurality of support rings (71) and a plurality of support rods (72); the plurality of support rings (71) are arranged at intervals along the axial direction of the filter paper (3); the plurality of support rods (72) are evenly fixed on the plurality of support rings (71); and the support ring (71) at the bottom is fixedly connected to the lower end cover (2).

5. A novel air filter element according to claim 4, characterized in that: The top of each support rod (72) is an inclined rod structure inclined toward the center of the support frame (7).

6. A novel air filter element according to claim 4, characterized in that: At least two connecting strips (8) are provided at the bottom of the upper end cover (1), and the connecting strips (8) are located on the inner side of the support frame (7). A protrusion (9) is provided on the outer side of the bottom of each connecting strip (8). After the filter paper (3) is installed on the upper end cover (1), the upper part of the protrusion (9) is clamped on the bottom of the support ring (71).

7. A novel air filter element according to claim 6, characterized in that: The upper and lower parts of the convex block (9) are both provided with arcuate surfaces, and the curvature of the arcuate surface corresponding to the upper part of the convex block (9) is greater than the curvature of the arcuate surface corresponding to the lower part.

8. A novel air filter element according to claim 1, characterized in that: A groove (10) is provided on the top of the upper end cover (1), and a pull rod (11) is provided in the groove (10).

9. A new type of air filter, characterized in that: An air filter element comprising any one of claims 1 to 8.

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