Integrated air filter convenient to install

Abstract

The utility model discloses an integrated air filter convenient to install, and belongs to the technical field of air filters. The integrated air filter comprises a filter element, an upper end cover and a lower end cover, the upper end cover and the lower end cover are connected to the upper end and the lower end of the filter element in an injection molding integrated forming mode respectively, an air outlet pipe is integrally formed at the top of the upper end cover, the inner wall of the air outlet pipe has taper, and the air outlet pipe can be connected to the air inlet end of a main machine in a sleeving mode and elastically deforms. The air outlet pipe can be fixedly connected to the air inlet end of the main machine in a sleeved mode or separated from the air inlet end of the main machine under the action of external force. The filter element, the upper end cover and the lower end cover are connected in an injection molding integral forming mode, the air filter is light and handy in structure, good in bonding strength, tight and firm in connection, low in manufacturing cost, few in production procedures, good in connection firmness and resistant to corrosion, and the air filter and a main machine can be rapidly disassembled and assembled, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to an integrated air filter which is easy to install. Background Art

[0002] The air filter is an important component of an air compressor or small engine. It can filter the air entering the air compressor or engine, and can effectively remove impurities such as dust, particles, and moisture in the air, preventing these impurities from entering the compressor or engine and causing damage to the engine head. While having good filtration efficiency, the air filter has a small resistance limit and plays a good protective role on the moving parts of the machine equipment. Therefore, it is widely used in industries such as air compressors and engines.

[0003] At present, existing air filters generally include a filter element assembly and an upper end cap and a lower end cap respectively arranged at the upper and lower ends of the filter element assembly. The traditional process generally involves first stamping a metal sheet to form the upper end cap and the lower end cap, then riveting the air outlet of the upper end cap to install the filter on the main unit. Finally, a special glue is used to bond the end caps to the upper and lower ends of the filter element assembly, thereby playing a role in shaping and sealing. When the above-mentioned air filter is installed on the main unit, the air outlet pipe of the upper end cap is sleeved on the air inlet end of the main unit, and then the fastening clamp is sleeved on the outer periphery of the air outlet pipe and locked to tighten the fastening clamp so that the air outlet pipe is tightened inward and fixedly sleeved on the air inlet end of the main unit, thereby completing the installation of the air filter. It can be seen that the air filter with the above structure has the problems of high end cap manufacturing cost, difficulty in ensuring the connection firmness of the end cap and the filter element assembly by bonding, and high risk of the end cap falling off. At the same time, the production process is cumbersome, the production labor intensity is high, the disassembly and assembly are inconvenient, and the efficiency is low. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an integrated air filter that is easy to install, has a low cost, and requires fewer production processes. It can achieve quick disassembly and assembly between the air filter and the main unit, and has good connection firmness and corrosion resistance, thereby greatly improving work efficiency.

[0005] In order to solve the above problems, the technical solutions adopted by the present invention are as follows:

[0006] An integrated air filter that is easy to install, comprising a filter element, an upper end cover and a lower end cover; the upper and lower ends of the filter element are respectively connected to the upper end cover and the lower end cover by injection molding, and an air outlet pipe is integrally formed on the top of the upper end cover. The inner wall of the air outlet pipe has a taper, and the air outlet pipe can be sleeved on the air inlet end of the main engine and undergo elastic deformation, so that the air outlet pipe can be fixedly sleeved on the air inlet end of the main engine or detached from the air inlet end of the main engine under the action of external force.

[0007] As a preferred embodiment of the present invention, the air outlet pipe is configured as a tubular structure with tapered inner and outer walls, the narrower upper portion and the wider lower portion.

[0008] As a preferred embodiment of the present invention, the taper α of the inner wall of the air outlet pipe is 1 to 3°, preferably 2°.

[0009] As a preferred embodiment of the present invention, an air outlet is provided in the middle of the upper end cover; the air outlet pipe is coaxially arranged with the air outlet, and the minimum inner diameter of the air outlet pipe is larger than the inner diameter of the air outlet.

[0010] As a preferred embodiment of the present invention, an annular positioning step is provided at the connection between the air outlet and the air outlet pipe.

[0011] As a preferred embodiment of the present invention, the inner wall of the air outlet pipe is a smooth arc surface.

[0012] As a preferred embodiment of the present invention, the upper end cover and the lower end cover are both PU end covers.

[0013] As a preferred embodiment of the present invention, the filter element includes an outer net and an inner net, and a porous filter material is provided between the outer net and the inner net.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The filter element of the air filter of the utility model is connected to the upper end cover and the lower end cover by injection molding, which has a light structure, good bonding strength, a tight and firm connection and will not loosen. Compared with the traditional metal end cover and filter element bonding process, it saves material cost, simplifies the process, is more convenient to process, reduces the labor intensity of production, and well ensures good sealing and corrosion resistance, effectively solving the problems of weak bonding, poor sealing and debonding of the traditional end cover process. At the same time, the utility model is provided with an outlet pipe that can undergo elastic deformation and has a tapered inner wall on the upper end cover. When installing, it is only necessary to sleeve the outlet pipe on the air inlet end of the host and press it tightly so that the outlet pipe is close to the air inlet end. The connection and sealing of the air filter and the host can be completed by the deformation of the outlet pipe itself, without the need to use a fastening clamp for fastening and sealing, thereby realizing quick disassembly and assembly between the air filter and the host, effectively overcoming the problems of complicated and inefficient installation process of the existing air filter, greatly reducing labor intensity, improving the installation efficiency of the air filter, and helping to improve the production efficiency and economic benefits of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional view of the integrated air filter described in the present utility model;

[0017] Figure 2 For this utility model Figure 1 Exploded view of;

[0018] Figure 3 This is a schematic diagram of the integrated air filter of the present invention installed at the air intake end of the host machine;

[0019] Explanation of the accompanying figures: 1. Filter element; 11. Inner mesh; 12. Outer mesh; 13. Porous filter material; 2. Upper end cover; 21. Air outlet; 22. Air outlet pipe; 23. Annular positioning step; 3. Lower end cover; 4. Air inlet. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0021] like Figure 1 and Figure 2 As shown, the integrated air filter provided by the present invention includes a filter element 1, an upper end cover 2 and a lower end cover 3. The filter element 1 serves as the filtering body of the air filter, and includes an outer net 12 and an inner net 11. A porous filter material 13 is provided between the outer net 12 and the inner net 11. The filter element 1 is a hollow cylindrical body as a whole. Two annular end faces are provided at the axial ends of the filter element 1, and the upper end cover 2 and the lower end cover 3 are provided and covered on the two annular end faces to play a positioning and sealing role. The lower end cover 3 is a solid end cover, and an air outlet 21 is provided in the middle of the upper end cover 2. The air flow enters the interior of the filter element 1 from the outer side of the filter element 1 for filtration, and the filtered gas is discharged into the air inlet 4 of the host through the air outlet 21 of the upper end cover 2. Specifically, the upper and lower ends of the filter element 1 are connected to the upper and lower end covers 2 and the lower end covers 3 respectively by injection molding, so that the upper and lower end covers 2 and the lower end covers 3 are fastened to the upper and lower ends of the filter element 1 at the same time as injection molding. Preferably, the upper end cap 2 and the lower end cap 3 are both end caps made of PU material. It can be seen that the air filter of the present invention has a light structure, good bonding strength, a tight and firm connection, and will not loosen. Compared with the traditional bonding process of metal end caps and filter element 1, it not only reduces the use of sealing rings, saves material costs, simplifies the process, makes processing more convenient, reduces the labor intensity of production, but also ensures good sealing and corrosion resistance, and effectively solves the problems of weak gluing, poor sealing, and degumming in traditional end cap processes. The top of the end cap is integrally formed with an air outlet pipe 22 that is connected to the inside of the filter element 1. The inner wall of the air outlet pipe 22 has a taper. The air outlet pipe 22 can be sleeved on the air inlet end 4 of the main unit and undergo elastic deformation, so that the air outlet pipe 22 can be tightly sleeved on the air inlet end 4 of the main unit or detached from the air inlet end 4 of the main unit under the action of external force. The utility model is provided with an air outlet pipe 22 that can undergo elastic deformation and has a tapered inner wall on the upper end cap 2, such as Figure 3As shown, during installation, it is only necessary to sleeve the air outlet pipe 22 onto the air inlet end 4 of the main unit and press it tightly so that the air outlet pipe 22 is close to the air inlet end 4. The air filter and the main unit can be connected and sealed by utilizing the deformation of the air outlet pipe 22 itself. There is no need to use a fastening clamp for fastening and sealing, thereby realizing rapid disassembly and assembly between the air filter and the main unit, effectively overcoming the problems of cumbersome installation process and low efficiency of existing air filters.

[0022] In some embodiments, the air outlet pipe 22 is configured as a tubular structure with a narrow upper portion and a wide lower portion having tapered inner and outer walls. The inner wall is tapered to facilitate the air outlet pipe 22 being sleeved on the air inlet end 4 of the main unit, while the outer wall is tapered to ensure that the air outlet pipe 22 is fastened to the air inlet end 4 of the main unit. Specifically, the taper α of the inner wall of the air outlet pipe 22 is 1 to 3°, preferably 2°. The air outlet pipe 22 is coaxially arranged with the air outlet hole 21 and is interconnected, and the minimum inner diameter of the air outlet pipe 22 is larger than the inner diameter of the air outlet hole 21 to avoid the air flow cross-section formed by being sleeved on the air inlet end 4 of the main unit being too small. Furthermore, an annular positioning step 23 is provided at the connection between the air outlet hole 21 and the air outlet pipe 22, and the annular positioning step 23 limits the axial position of the air inlet end 4 of the main unit. In order to further improve the sealing and tightness of the connection between the air outlet pipe 22 and the air inlet end 4 of the main unit, the inner wall of the air outlet pipe 22 is a smooth curved surface.

[0023] The production process of the integrated air filter of the utility model is as follows:

[0024] Design and manufacture the upper and lower end cap molds based on the filter element's dimensions. After spraying a release agent into the upper end cap mold, use a PU glue injection machine to inject PU glue into the mold. Before the glue solidifies, insert one end of the filter element into the glue. Wait for the glue to completely solidify and form. Then, remove the upper end cap and filter element from the upper end cap mold, completing the upper end cap molding and connection to the filter element. Next, spray a release agent into the lower end cap mold. Use a PU glue injection machine to inject PU glue into the mold. Before the glue solidifies, insert the other end of the filter element into the glue. Wait for the glue to completely solidify and form. Then, remove the lower end cap and filter element from the mold, completing the integrated air filter.

[0025] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. An integrated air filter that is easy to install, characterized by: It includes a filter element, an upper end cover and a lower end cover; the upper and lower ends of the filter element are respectively connected to the upper end cover and the lower end cover by injection molding, and the top of the upper end cover is integrally formed with an air outlet pipe, the inner wall of the air outlet pipe has a taper, and the air outlet pipe can be sleeved on the air inlet end of the host and undergo elastic deformation, so that the air outlet pipe can be fixedly sleeved on the air inlet end of the host or detached from the air inlet end of the host under the action of external force.

2. The integrated air filter that is easy to install according to claim 1, characterized in that: The air outlet pipe is configured as a tubular structure with tapered inner and outer walls, the upper portion being narrower and the lower portion being wider.

3. The integrated air filter that is easy to install according to claim 1 or 2, characterized in that: The taper α of the inner wall of the air outlet pipe is 1 to 3 degrees.

4. The integrated air filter that is easy to install according to claim 1 or 2, characterized in that: An air outlet is provided in the middle of the upper end cover; the air outlet pipe is coaxially arranged with the air outlet, and the minimum inner diameter of the air outlet pipe is larger than the inner diameter of the air outlet.

5. The integrated air filter that is easy to install according to claim 4, characterized in that: An annular positioning step is provided at the connection between the air outlet hole and the air outlet pipe.

6. The integrated air filter that is easy to install according to claim 1 or 2, characterized in that: The inner wall of the air outlet pipe is a smooth arc surface.

7. The integrated air filter that is easy to install according to claim 1 or 2, characterized in that: The upper end cover and the lower end cover are both PU end covers.

8. The integrated air filter that is easy to install according to claim 1 or 2, characterized in that: The filter element comprises an outer net and an inner net, and a porous filter material is arranged between the outer net and the inner net.

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