Round air filter and air filtering device

Abstract

The utility model provides a circular air filter and an air filtering device. The circular air filter comprises an inner framework, a lower top plate, non-woven fabric and an upper top plate, the inner framework is cylindrical, and through holes allowing air to pass through are formed in the periphery of the inner framework; the lower top plate is arranged at one end of the inner framework; the non-woven fabric is adaptively mounted on the peripheral side of the inner framework, is attached to the lower top plate and is used for filtering foreign matters; the upper top plate is arranged at the other end of the inner framework; the upper top plate is in contact with the end part of an external filter fixing tool to be fixed, and the lower top plate is detachably fastened on one side of an external filter main body; a screw joint piece is arranged on the inner circumferential side of the lower top plate and used for connecting the lower top plate and the filter body in a sealed mode, the sealing performance of the filter is ensured, unfiltered air is effectively prevented from leaking, and the overall performance of a filtering system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine filtering, in particular to a circular air filter and an air filtering device. Background Art

[0002] Automobile engines draw in large volumes of air during operation. If this air is not filtered, impurities such as dust suspended in the air can be drawn into the cylinders, accelerating wear on the cylinders and pistons. In particular, if larger particles get between the cylinder and piston, they can cause severe "cylinder scuffing," a phenomenon that is particularly frequent and severe in dry, sandy environments.

[0003] In this regard, the functions of air filters on the market are:

[0004] 1. Filter out dust and debris in the air to ensure sufficient and clean air enters the cylinder, reduce the wear of parts such as the cylinder, piston and piston ring, and ensure the normal operation of the engine.

[0005] 2. Balance the air flow to the air flow meter to prevent damage to internal electronic components caused by various means.

[0006] 3. Reduce intake noise, etc.

[0007] However, existing air filters currently have significant deficiencies in terms of structural configuration, filter element installation, and relative positioning within the assembly. In particular, after the air filter is mounted and fixed to the filter body, the relative disassembly of the air filter results in poor sealing between the two, failing to meet sealing connection and filtration requirements. Utility Model Content

[0008] In view of this, the purpose of the present invention is to provide a circular air filter and an air filtering device to solve the above problems.

[0009] The utility model adopts the following scheme:

[0010] The present application provides a circular air filter, comprising an inner frame, a lower top plate, a non-woven fabric, and an upper top plate; the inner frame is formed into a cylindrical shape and is provided with through holes around it to allow air to pass through; the lower top plate is arranged at one end of the inner frame; the non-woven fabric is adapted to be installed on the outer peripheral side of the inner frame and attached to the lower top plate for filtering foreign matter; the upper top plate is arranged at the other end of the inner frame; the upper top plate is fixed by contact with the end of an external filter fixture, and the lower top plate is detachably fastened to one side of an external filter body; a screw connection is provided on the inner peripheral side of the lower top plate for sealingly connecting the lower top plate and the filter body.

[0011] As a further improvement, the screw connection member is fastened in the lower top plate in the form of rubber coating, and the screw connection member is threadedly connected to the filter body to form a closed space.

[0012] As a further improvement, the lower top plate is annular, the outer side of the lower top plate is in close contact with the filter body, and the inner side of the lower top plate is sealed and connected to the filter body via a screw connection.

[0013] As a further improvement, the lower top plate is made of a composite material, which at least includes PP material and a modified material containing talc powder.

[0014] As a further improvement, the screw connection member is made of TPE material and is provided with an internal thread.

[0015] As a further improvement, the upper top plate is in a conical shape that is convenient for users to pull up, and a plurality of fixing grooves are formed on the outer peripheral side of the surface of the upper top plate for the front end of the filter fixture to be inserted after sliding.

[0016] As a further improvement, the upper top plate is made of a composite material, which at least includes PP material and a modified material containing talc powder.

[0017] As a further improvement, the detachable contour of the non-woven fabric is arranged on the outer side of the inner frame, and the screw connection piece is correspondingly arranged on the inner side of the lower top plate.

[0018] The present application further provides an air filtering device, comprising a filter body, the above-mentioned circular air filter installed in the body, and a filter fixture docked to the circular air filter; wherein the filter body is arranged between the air inlet and the air duct for introducing the filtered air into the engine.

[0019] As a further improvement, the air flowing into the air inlet flows through the through hole of the filter fixture, passes through the non-woven fabric in a manner of penetrating from the outside to the inside of the filter body, and is then discharged from the air duct.

[0020] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0021] 1. The circular air filter of the present application provides a large filtering surface by covering the outer peripheral side of the inner frame with non-woven fabric material, effectively capturing dust, foreign matter and other particles in the air, improving the filtering efficiency, and ensuring the output of clean air. The inner frame provides a solid support, making the entire filter structure stable and reliable, and the upper top plate and the lower top plate are respectively fixed at the two ends of the inner frame, further enhancing the overall stability and preventing deformation or displacement during operation.

[0022] 2. In particular, the inner circumference of the lower top plate is provided with a screw connection, which is tightly connected to the external filter body to ensure the sealing of the filter, effectively prevent the leakage of unfiltered air, and improve the overall performance of the filtration system. The upper top plate is fixed in contact with the end of the external filter fixture, with strong adaptability and can be applied to filters of various specifications, enhancing the versatility of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a circular air filter according to an embodiment of the present utility model;

[0024] Figure 2 yes Figure 1 Schematic diagram of the structure at other perspectives;

[0025] Figure 3 This is a disassembled schematic diagram of a circular air filter according to an embodiment of the present utility model;

[0026] Figure 4 It is a cross-sectional view of a circular air filter according to an embodiment of the present invention.

[0027] icon:

[0028] 1-Inner skeleton; 2-Lower top plate; 3-Non-woven fabric; 4-Upper top plate; 5-Screw connection; 6-Internal thread. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the present invention.

[0030] Example

[0031] Combine Figures 1 to 4 This embodiment provides a circular air filter, including an inner frame 1, a lower top plate 2, a non-woven fabric 3, and an upper top plate 4.

[0032] The inner frame 1 is cylindrical and has through-holes around its periphery for air circulation. The lower top plate 2 is disposed at one end of the inner frame 1. The non-woven fabric 3 is mounted on the outer periphery of the inner frame 1 and attached to the lower top plate 2 to filter foreign matter. The upper top plate 4 is disposed at the other end of the inner frame 1.

[0033] Furthermore, the upper top plate 4 is fixed by contacting the end of an external filter fixture (not shown), and the lower top plate 2 is removably fastened to one side of an external filter body (not shown). In particular, a screw member 5 is provided on the inner circumference of the lower top plate 2 for sealingly connecting the lower top plate 2 and the filter body.

[0034] The circular air filter mentioned above provides a large filtering surface by covering the outer peripheral side of the inner frame 1 with non-woven fabric 3 material, effectively capturing dust, foreign matter and other particles in the air, improving the filtering efficiency, and ensuring the output of clean air. The inner frame 1 provides a solid support, making the entire filter structure stable and reliable, and the upper top plate 4 and the lower top plate 2 are respectively fixed at the two ends of the inner frame 1, further enhancing the overall stability and preventing deformation or displacement during operation.

[0035] A screw connection 5 is provided on the inner circumference of the lower top plate 2, which is tightly connected to the external filter body to ensure the sealing of the filter, effectively prevent the leakage of unfiltered air, and improve the overall performance of the filtration system. The upper top plate 4 is fixed in contact with the end of the external filter fixture, has strong adaptability, and can be applied to filters of various specifications, thereby enhancing the versatility of the product.

[0036] In this embodiment, the screw connector 5 is secured within the lower top plate 2 by rubber coating, and is threadedly connected to the filter body to form a sealed space. Preferably, the rubber coating is TPE coating, specifically, the screw connector 5 is coated with TPE soft rubber material onto the lower top plate 2. This can be achieved by various processing methods, such as using a two-shot injection molding machine for one-shot molding, or using a conventional injection molding machine with a rubber coating mold and two-shot injection molding.

[0037] In this embodiment, the lower top plate 2 is annular, with its outer side in close contact with the filter body and its inner side sealed to the filter body via screw connectors 5. This annular arrangement allows the outer side to rest against the filter body, forming a good contact surface. This, combined with the sealed connection between the inner side and the filter body via screw connectors 5, ensures a tight seal between the filter and the filter body, preventing air leakage and improving filtration effectiveness.

[0038] Preferably, the lower top plate 2 is made of a composite material, the composite material comprising at least PP and a modified material containing talc. Specifically, PP is polypropylene, and the modified material can be a multifunctional material such as TD20 (a modified material containing 20% ​​talc), which is widely used in the automotive industry.

[0039] Preferably, the screw connection 5 is made of TPE material and is provided with an internal thread 6 (such as Figure 3 In this embodiment, the screw connection member 5 is made of a flexible material, and its internal thread is tightly screwed to the filter body.

[0040] In other embodiments, the inner side of the screw connection member 5 may be composed of a plurality of sealing protrusions for interference fit with the filter body.

[0041] In this embodiment, the upper plate 4 is conical in shape, making it easy for the user to pull it. Multiple fixing grooves (not shown) are formed on the outer circumference of the upper plate 4 to accommodate the front end of the filter holder after sliding. Obviously, the insertion and mating of the filter holder with the fixing grooves of the upper plate 4 is conventional technology and will not be elaborated on here.

[0042] Preferably, the upper plate 4 is made of a composite material, which at least includes PP material and a modified material containing talc. For details, please refer to the specific material of the lower plate 2 mentioned above.

[0043] In this embodiment, the non-woven fabric 3 is removably contoured and mounted on the exterior of the inner frame 1, while the threaded connector 5 is correspondingly contoured and mounted on the interior of the lower top plate 2. The cylindrical inner frame 1 serves as the support structure, providing the filter's basic shape and support. The through-holes allow for air circulation and ensure effective filtration through the non-woven fabric 3. Attached to the outer periphery of the inner frame 1, the non-woven fabric 3 serves as the core filter material of the air filter, capturing dust and impurities in the air, thereby ensuring the cleanliness of the air passing through.

[0044] In addition, this embodiment also provides an air filtration device comprising a filter body, the aforementioned circular air filter mounted within the body, and a filter fixture docked to the circular air filter. The filter body is positioned between an air inlet and an air duct for directing filtered air into the engine. Thus, by mounting the circular air filter within the filter body, the device can efficiently filter air entering the air duct, preventing dust, impurities, and other particulate matter from entering the engine, thereby protecting key engine components, reducing wear, and extending service life.

[0045] In this embodiment, air flowing into the air inlet flows through the through-holes of the filter fixture and, after passing through the non-woven fabric 3 from the outside to the inside of the filter body, is discharged from the air duct. After entering through the air inlet, the air first flows through the through-holes of the filter fixture. This not only allows the air to pass smoothly, but also serves as a preliminary guide, ensuring that the air is evenly distributed across the surface of the non-woven fabric 3, avoiding excessive local pressure and thus improving the filtration effect. Subsequently, air enters the non-woven fabric 3 from the outside, and after being filtered to remove dust and impurities, clean air flows out from the inside and into the air duct, ensuring that pollutants are effectively intercepted and prevented from entering the internal air duct, thereby improving the overall filtration effect and cleanliness.

[0046] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention fall within the protection scope of the present invention.

Claims

1. A circular air filter, characterized in that: include: The inner frame is formed into a cylindrical shape and has through holes around it to allow air to pass through; A lower top plate is arranged at one end of the inner frame; A non-woven fabric is adapted to be mounted on the outer peripheral side of the inner frame and attached to the lower top plate for filtering foreign matter; An upper top plate is arranged at the other end of the inner frame; The upper top plate is fixed by contacting the end of the external filter fixture, and the lower top plate is detachably fastened to one side of the external filter body; Furthermore, a screw connection piece is provided on the inner peripheral side of the lower top plate for sealingly connecting the lower top plate and the filter body.

2. The circular air filter according to claim 1, characterized in that: The screw connection piece is fastened in the lower top plate in the form of rubber coating, and the screw connection piece is threadedly connected to the filter body to form a closed space.

3. The circular air filter according to claim 2, characterized in that: The lower top plate is annular in shape, the outer side surface of the lower top plate is tightly attached to the filter body, and the inner side surface of the lower top plate is sealed and connected to the filter body via a screw connection.

4. The circular air filter according to claim 3, characterized in that: The lower top plate is made of composite material.

5. The circular air filter according to claim 4, characterized in that: The screw connection piece is made of TPE material and is provided with an internal thread.

6. The circular air filter according to claim 1, characterized in that: The upper top plate is in a conical shape that is convenient for users to pull up. A plurality of fixing grooves are formed on the outer peripheral side of the surface of the upper top plate for the front end of the filter fixture to be inserted after sliding.

7. The circular air filter according to claim 6, characterized in that: The upper top plate is made of composite material.

8. The circular air filter according to claim 1, characterized in that: The non-woven fabric is detachably arranged on the outer side of the inner frame, and the screw connection piece is correspondingly arranged on the inner side of the lower top plate.

9. An air filter device, characterized in that: It comprises a filter body, a circular air filter as described in any one of claims 1 to 8 installed in the body, and a filter fixture docked to the circular air filter; wherein the filter body is arranged between an air inlet and an air duct for introducing filtered air into an engine.

10. The air filter device according to claim 9, characterized in that: The air flowing into the air inlet flows through the through-hole of the filter fixture, passes through the non-woven fabric from the outside to the inside of the filter body, and is then discharged from the air duct.

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