Air filter with filter element binding gear ring

Abstract

The utility model relates to an air filter with filter element binding gear rings, which comprises a cylindrical filter element and more than one filter element binding gear ring, the cylindrical filter element is formed by folding a plurality of filter layer surfaces around the circumference, an interlayer gap is reserved on the cylindrical outer circumference of two adjacent filter layer surfaces, and the filter element binding gear ring is of an integral injection molding circumferential structure. A circle of positioning insertion teeth which are uniformly distributed around the circumference are arranged on the inner circumference of the filter element binding gear ring, the positioning insertion teeth are in one-to-one correspondence with the interlayer spacing gaps around the circumference, the width of the tooth root of each positioning insertion tooth is larger than that of the tooth top of each positioning insertion tooth, and anti-slip reticulate patterns or a plurality of anti-slip ribs from inside to outside are arranged on the tooth surface of each positioning insertion tooth. The structure is simple and compact, the filter element structure can be effectively positioned, and the stable filtering effect is ensured.

Description

Technical Field

[0001] The utility model relates to an air filter, in particular to an air filter with a filter element binding tooth ring. Background Art

[0002] In the structure of an air filter, the filter element is a corrugated structure formed by folding multiple layers of filter layers in a circle. There is an air storage gap between every two filter layers, and external air enters the air storage gap and is filtered by the filter layer to complete the filtering operation. In actual use, affected by high temperature, dust, oil stains, etc. of the external air, the folding gaps of the multiple filter layers are easily adhered, resulting in deformation of the filter element structure and reduction of the air storage gap, affecting the stable and safe use of the filter element. The existing structure prevents the outer deformation of the filter element by external binding. There is a hidden danger of loosening in the binding, and the problem of reduction of the air storage gap cannot be solved. Tight binding may even cause the shrinkage and reduction of the air storage gap. Summary of the Invention

[0003] The utility model provides an air filter with a filter element binding tooth ring, which has a simple and compact structure and can effectively position the stable structure of the filter element.

[0004] The technical solution adopted by the present utility model is: an air filter with a filter element binding tooth ring, including a cylindrical filter element formed by folding multiple filter layers around the circumference. There is a layer spacing gap between adjacent two filter layers on the outer circumference of the cylinder. It is characterized in that: it further includes more than one filter element binding tooth ring. The filter element binding tooth ring is an integrally injection-molded circular structure. A plurality of positioning insertion teeth evenly distributed around the circumference are arranged on the inner circumference of the filter element binding tooth ring. The positioning insertion teeth are inserted into the layer spacing gaps one by one around the circumference. The root width of the positioning insertion teeth is greater than the tip width. Anti-slip mesh patterns or multiple anti-slip convex ribs from the inside to the outside are arranged on the tooth surfaces of the positioning insertion teeth.

[0005] The filter element binding tooth ring is made of nylon or plastic or low-elastic rubber material.

[0006] The upper and lower end faces of the axial direction of the filter element are inserted into the upper and lower seats.

[0007] Insertion key groups corresponding to the layer spacing gaps of the filter element are arranged on the upper and lower seats. The insertion key groups include a circle of insertion keys arranged around the circumference.

[0008] A net cylinder is arranged in a circle on the inner circle of the filter element.

[0009] The net cylinder is connected to the upper and lower seats inserted at the upper and lower end faces of the filter element.

[0010] A seat edge is turned inwards in a circle on the outer sides of the upper and lower seats. A circle of seat teeth corresponding to the positioning insertion teeth respectively are arranged on the inner wall of the seat edge.

[0011] The beneficial effects of the present utility model are as follows: The filter element is fixed by tying the toothed ring with nylon, and the positioning insertion teeth in the toothed ring are inserted into the layer spacing gaps, effectively positioning the filter layer folded in a coil. The bursting strength of the filter element under the impact of high-pressure air is enhanced, so that air filtration and dust capacity are better, the service life is longer, and air circulation is smoother. Even during air backwashing and cleaning, it can also play a good explosion-proof function. The overall nylon is integrally formed, with high strength, less affected by temperature and high-pressure air, and there is no problem of shrinking, tying and squeezing the filter layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is Figure 1 the view A-A in

[0014] Figure 3 is Figure 1 the view B-B in

[0015] Figure 4 is Figure 2 the enlarged view of the structure of the positioning insertion teeth in

[0016] In the figure: upper seat 1, lower seat 2, seat edge 3, seat teeth 4, filter element 5, filter layer surface 6, layer spacing gap 7, filter element tying toothed ring 8, positioning insertion teeth 9, anti-slip convex ridges 10. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following is further described with reference to the accompanying drawings.

[0018] Figures 1-3 As shown: An air filter with a filter element tying toothed ring includes a cylindrical filter element 5 formed by folding multiple filter layer surfaces 6 around the circumference, an upper seat 1, a lower seat 2 and a filter element tying toothed ring 8. There is a layer spacing gap 7 left on the cylindrical outer circumference between two adjacent filter layer surfaces 6; the filter element tying toothed ring 8 is a nylon integrally injection-molded circumferential structure. A circle of multiple positioning insertion teeth 9 evenly distributed around the circumference is arranged on the inner circumference of the filter element tying toothed ring 8. The positioning insertion teeth 9 are inserted into the layer spacing gaps 7 one by one around the circumference. The root width of the positioning insertion teeth is greater than the tip width. Multiple anti-slip convex ridges 10 from the inside to the outside are arranged on the tooth surface of the positioning insertion teeth 9. The upper and lower axial end faces of the filter element 5 are inserted into the upper and lower seats 1 and 2. A circle of seat edges 3 is turned inwards on the outer sides of the upper and lower seats. A circle of seat teeth 4 corresponding to the positioning insertion teeth respectively is arranged on the inner wall of the seat edge 3, and the seat teeth 4 are also inserted into the layer spacing gap 7.

[0019] In this embodiment, the filter element 5 is tied by one filter element tying toothed ring 8 in the up and down directions, and multiple ones can also be used.

[0020] On the basis of this embodiment, insertion keys corresponding to the gap between the filter element layers can be arranged on the upper and lower seats. The insertion key group includes a circle of insertion keys arranged around the circumference for inserting into the corresponding layer gap.

[0021] On the basis of this embodiment, a net cylinder can be arranged in the inner circle of the filter element. The net cylinder is connected to the upper and lower seats inserted at the upper and lower end faces of the filter element for supporting the strength of the filter element from the inner circle.

[0022] On the basis of this embodiment, the filter element binding gear ring can also be made of plastic or low-elastic rubber material.

Claims

1. An air filter with a filter element tied to a gear ring, comprising a cylindrical filter element formed by folding multiple filter layers around the circumference, with a gap between adjacent filter layers on the outer circumference of the cylinder, characterized in that: It also includes more than one filter element binding gear ring, which is an integrated injection molded circular structure. The inner circumference of the filter element binding gear ring is provided with a circle of multiple positioning plug-in teeth evenly distributed around the circumference. The positioning plug-in teeth correspond to the spacing gaps between the plug-in layers around the circle. The root width of the positioning plug-in teeth is greater than the top width of the teeth. Anti-slip mesh patterns or multiple anti-slip ridges from the inside to the outside are provided on the tooth surfaces of the positioning plug-in teeth.

2. The air filter with a filter element tied to a gear ring according to claim 1, characterized in that: The filter element binding gear ring is made of nylon, plastic or low-elasticity rubber.

3. The air filter with a filter element tied to a gear ring according to claim 1, characterized in that: The axial upper and lower end surfaces of the filter element are plugged into the upper and lower seats.

4. The air filter with a filter element tied to a gear ring according to claim 1, characterized in that: The upper and lower seats are provided with plug-in key groups corresponding to the spacing gaps between the filter core layers, and the plug-in key groups include a circle of plug-in keys arranged around the circumference.

5. The air filter with a filter element tied to a gear ring according to claim 1, characterized in that: The inner circle of the filter element is provided with a circle of mesh cylinder.

6. The air filter with filter element tied gear ring according to claim 5, characterized in that: The net cylinder is connected to the upper and lower seats plugged into the upper and lower end surfaces of the filter element.

7. An air filter with a filter element tied to a gear ring according to claim 3, 4 or 6, characterized in that: The outer sides of the upper and lower seats are folded inwards to form a circle of seat edges, and the inner walls of the seat edges are provided with a circle of seat teeth corresponding to the positioning splicing teeth respectively.

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