Novel combined air filter

Abstract

The utility model discloses a novel combined type air filter. According to the technical scheme, the filter comprises an outer filter and an inner filter, the inner filter is arranged on the inner side of the outer filter, the outer filter comprises an outer frame, outer filter paper, an inner frame and a cover plate, the shell, the outer filter paper and the inner frame are sequentially arranged from outside to inside, the cover plate is located at one end of the outer frame and wraps the outer filter paper and the inner frame, first polystyrene foam is arranged on the cover plate, and the first polystyrene foam is arranged on the outer frame. The first polystyrene foam is connected with the cover plate and the outer frame, the second polystyrene foam is arranged on the other side of the outer filter and connected with the outer frame, the outer filter paper and the inner frame, the inner filter comprises a framework and inner filter paper, the framework adheres to the inner filter paper, one end of the framework is closed and abuts against the inner side of the cover plate, and the other end of the framework abuts against the inner side of the cover plate. The filtering stability of the air filter can be improved, and the service life of an engine is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of air filters, and more specifically to a novel combined air filter. Background Technology

[0002] Existing combined air filters use inner and outer metal meshes to hold folded filter paper in place. End caps and retaining rings are then attached to both ends to secure the inner and outer metal meshes. The end caps are made of expanded polystyrene. Improper installation can cause the ends of the inner and outer metal meshes to puncture the end caps. After a period of use, as the airflow through the filter paper decreases, the ends of the inner and outer metal meshes can easily penetrate the end caps, causing air filter leaks. Unfiltered air enters the engine through these leaks, shortening the engine's lifespan. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a new type of combined air filter to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A novel combined air filter includes an external filter and an internal filter. The internal filter is disposed inside the external filter. The external filter includes an outer frame, an external filter paper, an inner frame, and a cover plate. The outer frame, external filter paper, and inner frame are arranged sequentially from the outside to the inside. The cover plate is located at one end of the outer frame and wraps the external filter paper and the inner frame inside. The cover plate is provided with a first foam adhesive, which connects the cover plate and the outer frame. The other side of the external filter is provided with a second foam adhesive, which connects the outer frame, external filter paper, and inner frame. The internal filter includes a frame and internal filter paper. The frame is bonded to the internal filter paper. One end of the frame is closed and abuts against the inside of the cover plate.

[0005] As a further improvement of this utility model, the outer side of the cover plate is provided with an annular groove, and the annular groove has a positioning protrusion.

[0006] As a further improvement of this utility model, the inner side of the positioning protrusion is provided with a positioning groove, and the frame is provided with a positioning block, which is inserted into the positioning groove.

[0007] As a further improvement of this utility model, the outer frame and inner frame are made of plastic.

[0008] As a further improvement of this utility model, the outer side of the outer filter paper is provided with an outer adhesive, and the trajectory of the outer adhesive is spiral.

[0009] As a further improvement of this utility model, the inner side of the outer filter paper is provided with an inner adhesive, and the trajectory of the inner adhesive is spiral.

[0010] The beneficial effects of this invention are that it improves the stability of air filter filtration and extends the service life of the engine. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a cross-sectional structural diagram of the outer filter paper, outer adhesive, and inner adhesive.

[0013] Markings: 1. External filter; 11. Outer frame; 12. External filter paper; 13. Inner frame; 14. Cover plate; 15. First foam adhesive; 16. Second foam adhesive; 2. Internal filter; 21. Skeleton; 22. Internal filter paper; 31. Annular groove; 32. Positioning protrusion; 321. Positioning groove; 4. Positioning block; 5. External adhesive; 6. Internal adhesive. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0015] Reference Figure 1 one Figure 2 As shown, the novel combined air filter of this embodiment includes an external filter 1 and an internal filter 2. The internal filter 2 is disposed inside the external filter 1. The external filter 1 includes an outer frame 11, an external filter paper 12, an inner frame 13, and a cover plate 14. The outer shell, the external filter paper 12, and the inner frame 13 are arranged sequentially from the outside to the inside. The cover plate 14 is located at one end of the outer frame 11 and wraps the external filter paper 12 and the inner frame 13 inside. The cover plate 14 is provided with a first foam adhesive 15, which connects the cover plate 14 and the outer frame 11. The other side of the external filter 1 is provided with a second foam adhesive 16, which connects the outer frame 11, the external filter paper 12, and the inner frame 13. The internal filter 2 includes a frame 21 and an internal filter paper 22. The frame 21 is bonded to the internal filter paper 22. One end of the frame 21 is closed and abuts against the inside of the cover plate 14.

[0016] Through the above technical solution, the first foam adhesive 15 connects the cover plate 14 and the outer frame 11 to fix them, and the second foam adhesive 16 connects the outer frame 11, the outer filter paper 12, and the inner frame 13 to fix them. The first foam adhesive 15 and the second foam adhesive 16 fix the two ends of the outer filter 1.

[0017] The inner filter 2 is installed inside the outer filter 1. After installation and fixation, the end cap is pressed against it. The external airflow passes through the outer filter 1, then through the inner filter 2, and then is output to the intake pipe. The outer filter paper 12 is folded, with a large filtration area and a high throughput when the filter paper is unfolded.

[0018] The end of the outer frame 11 abuts against the cover plate 14, which is made of high-strength plastic. This prevents the cover plate 14 from being punctured during installation or use, thus preventing filtered air from entering the engine through a leak and shortening the engine's lifespan. This improves the stability of the air filter's filtration and extends the engine's lifespan.

[0019] As one specific embodiment of the improvement, the outer side of the cover plate 14 is provided with an annular groove 31, and the annular groove 31 has a positioning protrusion 32.

[0020] Through the above technical solution, the annular groove 31 and the positioning protrusion 32 are fixed in conjunction with the external installation position, reducing the play of the air filter during vehicle operation and improving filtration stability.

[0021] As an improved specific implementation, the inner side of the positioning protrusion 32 is provided with a positioning groove 321, and the frame 21 is provided with a positioning block 4, which is inserted into the positioning groove 321.

[0022] Through the above technical solution, the positioning block 4 is inserted into the positioning groove 321 so that after the inner filter 2 is inserted into the outer filter 1, the position of the inner filter 2 is stable with little play, thus improving the filtration stability.

[0023] Furthermore, the internal support cover plate 14 further enhances the structural strength.

[0024] As one specific embodiment of the improvement, the outer frame 11 and the inner frame 13 are made of plastic.

[0025] Through the above technical solution, the outer frame 11 and the inner frame 13 are made of plastic, which avoids the outer frame 11 and the inner frame 13 from rusting, corroding and clogging the outer filter paper 12, and extends the service life of the outer filter paper 12.

[0026] As one specific embodiment of the improvement, the outer filter paper 12 is provided with an outer adhesive 5 on its outer side, and the trajectory of the outer adhesive 5 is spiral.

[0027] Through the above technical solution, adhesive is applied to the outside of the outer filter paper 12 to form an outer adhesive 5, which effectively improves the strength of the outer filter paper 12, increases its own support and pressure resistance, and makes the outer filter paper 12 less prone to deformation and flattening during filtration. It is especially suitable for harsh environments such as deserts and humid places.

[0028] As one specific embodiment of the improvement, the inner side of the outer filter paper 12 is provided with an inner adhesive 6, and the trajectory of the inner adhesive 6 is spiral.

[0029] Through the above technical solution, adhesive is applied to the inner side of the outer filter paper 12 to form an inner adhesive 6, which works in conjunction with the outer adhesive 5 to effectively improve the strength of the outer filter paper 12, increase its support and pressure resistance, and make the outer filter paper 12 less prone to deformation and flattening during filtration. It is particularly suitable for harsh environments such as deserts and humid areas.

[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A novel combined air filter, comprising an external filter (1) and an internal filter (2), wherein the internal filter (2) is disposed inside the external filter (1), characterized in that: The outer filter (1) includes an outer frame (11), an outer filter paper (12), an inner frame (13), and a cover plate (14). The outer shell, the outer filter paper (12), and the inner frame (13) are arranged sequentially from the outside to the inside. The cover plate (14) is located at one end of the outer frame (11) and wraps the outer filter paper (12) and the inner frame (13) inside. The cover plate (14) is provided with a first foam adhesive (15), which connects the cover plate (14) and the outer frame (11). The other side of the outer filter (1) is provided with a second foam adhesive (16), which connects the outer frame (11), the outer filter paper (12), and the inner frame (13). The inner filter (2) includes a skeleton (21) and an inner filter paper (22). The skeleton (21) is bonded to the inner filter paper (22). One end of the skeleton (21) is closed and abuts against the inside of the cover plate (14).

2. The novel combined air filter according to claim 1, characterized in that: The cover plate (14) has an annular groove (31) on its outer side, and the annular groove (31) has a positioning protrusion (32).

3. The novel combined air filter according to claim 2, characterized in that: The inner side of the positioning protrusion (32) is provided with a positioning groove (321), and the frame (21) is provided with a positioning block (4), which is inserted into the positioning groove (321).

4. The novel combined air filter according to claim 1, characterized in that: The outer frame (11) and inner frame (13) are made of plastic.

5. The novel combined air filter according to claim 1, characterized in that: The outer filter paper (12) is provided with an outer adhesive (5) on its outer side, and the trajectory of the outer adhesive (5) is spiral.

6. The novel combined air filter according to claim 1, characterized in that: The inner side of the outer filter paper (12) is provided with an inner adhesive (6), and the trajectory of the inner adhesive (6) is spiral.

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