Split type filtering element

Abstract

The utility model discloses a split type filter element which comprises a filter element, a filter element cover and a filter element cover, wherein a detachable sealing ring is independently arranged on the filter element; the sealing ring is of an annular structure, and convex ribs are arranged on the outer side wall of the sealing ring. The sealing ring is provided with a groove, and the bottom of the groove is provided with an inverted buckle groove. The filter element comprises a framework and filter paper, the groove is in interference fit with the framework, and an inverted buckle protrusion matched with the inverted buckle groove is arranged on the outer side of the top end of the framework. According to the split type filter element, the sealing ring and the filter element can exist in a split mode, when the split type filter element is used, the sealing ring is firstly installed on the framework, then the filter element is integrally assembled in the shell, the sealing performance of a product can be guaranteed through the structure, the sealing ring can be repeatedly used under the condition that the sealing ring is intact, and the maintenance cost of a user is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, in particular to a split filter element. Background Art

[0002] As a key protection device for engines, the core component of an air filter is the filter element, which undertakes the important task of filtering impurities in the air. In this structure, the sealing ring plays an extremely important role. It ensures a tight seal between the filter element and the housing, preventing unfiltered air from directly entering the engine.

[0003] Among the types of filter elements, the market is mainly divided into two categories: ordinary filter elements and direct-current filter elements. The constituent elements of an ordinary filter element include filter paper, wire mesh, and a PU rubber sealing ring, while a direct-current filter element is made of filter paper and a PU rubber sealing ring using a polyurethane foam molding process. The technical problem is that its structure is an integral non-separable one, which not only increases the manufacturing difficulty but also means that the sealing ring is not reusable. For example, during the operation of a commercial vehicle, routine maintenance and filter element replacement are required every 60,000 kilometers. At this time, the PU rubber sealing ring also needs to be replaced. Due to the current one-piece molding design, the sealing ring cannot be reused, resulting in a waste of resources. Summary of the Invention

[0004] To solve the above technical problems, the utility model provides a split filter element. To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary part is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the subsequent detailed description.

[0005] The utility model adopts the following technical solutions:

[0006] Provide a split filter element, including: a filter element, on which a detachable sealing ring is independently arranged; the sealing ring is of an annular structure, and a rib is arranged on the outer side wall of the sealing ring; a groove is opened at the bottom of the sealing ring, and an inverted buckle groove is opened at the bottom of the groove; the filter element includes: a skeleton, the top end of the skeleton is embedded in the groove, and an inverted buckle protrusion adapted to the inverted buckle groove is arranged on the outer side of the top end of the skeleton.

[0007] Further, the filter element further includes: filter paper, and the top end of the filter paper is bonded inside the bottom end of the skeleton.

[0008] Further, the height of the inverted buckle protrusion is 2 - 3 mm.

[0009] Further, the convex ribs provided on the outer side wall of the sealing ring protrude away from the sealing ring to form a housing sealing surface.

[0010] Further, the two side walls of the groove are skeleton sealing surfaces and are in interference fit with the skeleton.

[0011] Further, an annular notch is provided on the inner side of the bottom of the sealing ring, the groove is provided on the notch bottom wall surface of the annular notch, and the notch side wall surface of the annular notch is an inclined surface.

[0012] Further, the material of the sealing ring is ethylene propylene diene monomer rubber.

[0013] Further, the sealing ring is of an annular structure, and this annular structure is a circular ring structure.

[0014] Further, the sealing ring is of an annular structure, and this annular structure is an elliptical ring structure.

[0015] Further, the sealing ring is of an annular structure, and this annular structure is a square ring structure.

[0016] The beneficial effects brought by the present utility model: The sealing ring in the split filter element of this application can exist separately from the filter element. During use, first install the sealing ring on the skeleton, and then assemble the filter element as a whole into the housing. This structure can not only ensure the sealing performance of the product, but also, when the sealing ring is intact, the sealing ring can be reused, reducing the maintenance cost for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of a split filter element of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the sealing ring of the present utility model;

[0020] Figure 3 is a cross-sectional view of the sealing ring of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It should be clear that the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work belong to the scope of protection of the present utility model.

[0022] Currently, the assembly method of the air filter seal ring in the market is mostly synchronous assembly with the filter element. Since it is an integral structure with the filter element and cannot be disassembled, the seal ring cannot be reused. To solve this technical problem, as Figures 1-3 shown, in some illustrative embodiments, the present application provides a split-type filter element, including: a filter element 1 and a seal ring 2, and a detachable seal ring 2 is independently provided on the filter element 1, that is, the structure of the seal ring 1 is an individual entity and can exist separately from the filter element 1 of the filter element.

[0023] The seal ring 2 is in a ring structure, that is, a closed ring-shaped object. This ring structure can specifically be a circular ring structure, an elliptical ring structure, or a square ring structure. The above three structures are structural forms with relatively high adaptability and can be designed as an irregular ring structure according to actual situations. Therefore, the most suitable ring structure can be selected according to different application requirements and installation spaces. Different ring structures can better adapt to different-shaped shells and skeletons, ensuring effective sealing in various environments.

[0024] The material of the seal ring 2 is ethylene propylene diene monomer rubber (EPDM). Specifically, it is manufactured by an injection molding process or a compression molding process using ethylene propylene diene monomer rubber. Ethylene propylene diene monomer rubber is a widely used synthetic rubber with advantages such as heat resistance, cold resistance, chemical resistance, and electrical insulation, and is suitable for being processed into the seal ring 2 for use.

[0025] A rib 201 is provided on the outer side wall of the seal ring 2. The rib 201 provided on the outer side wall of the seal ring protrudes away from the seal ring to form a housing sealing surface 202. During assembly, sealing is achieved by compressing the rib 201. The rib 201 is located on the outer side wall of the seal ring 2, that is, a raised structure is formed in a circle around the seal ring 2, and the formed raised structure forms a housing sealing surface 202 at the part where the seal ring 2 contacts the housing. This sealing surface is the area that actually contacts and prevents leakage during the sealing process.

[0026] The presence of the ribs 201 increases the contact area and friction between the sealing ring 2 and the housing, making the seal tighter and reducing the possibility of leakage. During the assembly process, by compressing the ribs 201, it is easier to install the sealing ring 2 in the correct position, while providing intuitive assembly feedback to ensure that the sealing ring 2 has been correctly installed. If the sealing ring 2 needs to be replaced, the structure of the ribs 201 makes the disassembly process relatively simple because they provide a clear compression and release point.

[0027] The filter element 1 includes: a skeleton 101 and a filter paper 102.

[0028] A groove 203 is formed at the bottom of the sealing ring 2, and its shape and size are designed to closely cooperate with the skeleton 101. The two side walls of the groove 203 are the skeleton sealing surfaces 204, and the skeleton sealing surfaces 204 serve as the contact surfaces with the skeleton 101 for sealing. After installation, the top end of the skeleton 101 is embedded in the groove 203, and the groove 203 and the skeleton 101 are in interference fit, that is, the size of the skeleton 101 is slightly larger than the size of the groove 203, so that the top end of the skeleton 101 can be pressed into the groove 203 during installation. The interference fit ensures a tight connection between the sealing ring 2 and the skeleton 101 without gaps, thereby improving the stability and sealing performance of the connection. In addition, the above structural design simplifies the assembly process of the sealing ring 2 because the skeleton 101 can be directly pressed into the groove 203 without complex fixing measures, and can also improve the reliability and long-term performance of the entire filter element.

[0029] An annular notch 3 is formed on the inner side of the bottom of the sealing ring 2, a groove 203 is formed on the bottom wall surface 301 of the annular notch 3, and the side wall surface 302 of the annular notch 3 is an inclined surface. The above structural design makes the sealing ring 2 easier to adapt to the shape and size of the skeleton 101 during the installation process, especially when the skeleton 101 may have a taper or a step, which can provide better adaptability. Moreover, the side wall surface 302 of the notch can serve as a guiding surface to help the sealing ring 2 be smoothly installed on the skeleton 101. This design reduces the friction during installation, making the installation process of the sealing ring 2 smoother and can be completed without excessive force.

[0030] The top end of the filter paper 102 is bonded to the inner bottom end of the skeleton 101. Specifically, when the filter paper 102 is folded and formed, the air inlet and outlet filter paper joint surfaces are sealed by hot melt adhesive, and then the filter paper 102 is fixed to the inner bottom end of the skeleton 101 by hot melt adhesive.

[0031] An inverted buckle groove 205 is formed at the bottom of the groove 203, and an inverted buckle protrusion 103 adapted to the inverted buckle groove 205 is provided on the outer side of the top end of the skeleton 101. Adaptation means that when the sealing ring 2 is installed on the filter element 1, the inverted buckle protrusion 103 is embedded in the inverted buckle groove 205 to form a locking effect, making the sealing ring 2 and the skeleton 101 closely connected.

[0032] The above structural design greatly improves the connection strength between the sealing ring 2 and the skeleton 101, ensuring that the sealing ring 2 will not loosen under vibration or pressure changes. The reverse buckle design effectively prevents the sealing ring 2 from accidentally falling off during the assembly or use of the filter element, improving the reliability of the overall structure. The reverse buckle mechanism simplifies the installation process of the sealing ring 2 because once the reverse buckle protrusion 103 is embedded in the reverse buckle groove 205, the position of the sealing ring 2 is fixed without other complex fixing measures.

[0033] The height of the reverse buckle protrusion 103 is 2 - 3 mm. This size provides both sufficient firm locking effect and is not too tall to cause assembly difficulties or affect the sealing effect.

[0034] When in use, the user first fixes the sealing ring 2 on the skeleton 101, and the mating area between the sealing ring 2 and the skeleton 101 is an interference fit, with a rubber compression amount of 1 - 2 mm during mating. Then, the sealing ring 2 and the filter element 1 are assembled into the internal part of the air filter housing as a whole, where the housing sealing surface 202 ensures an interference fit with the housing to achieve sealing. After the user has run a certain mileage, when the filter element 1 is maintained and replaced, the sealing ring 2 can be removed and continue to be used. After being used 3 - 5 times, it can be scrapped.

[0035] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A split filter element, comprising: The filter element is characterized in that a detachable sealing ring is independently arranged on the filter element; the sealing ring is an annular structure, and the outer wall of the sealing ring is provided with convex ribs; a groove is provided at the bottom of the sealing ring, and an undercut groove is provided at the bottom of the groove; the filter element includes: a skeleton, the top end of the skeleton is embedded in the groove, and an undercut protrusion adapted to the undercut groove is provided on the outer side of the top end of the skeleton.

2. A split filter element according to claim 1, characterized in that: The filter element further comprises filter paper, the top end of which is bonded to the inside of the bottom end of the frame.

3. A split filter element according to claim 2, characterized in that: The height of the undercut protrusion is 2 to 3 mm.

4. A split filter element according to claim 3, characterized in that: The convex rib arranged on the outer side wall of the sealing ring protrudes in a direction away from the sealing ring to form a housing sealing surface.

5. A split filter element according to claim 4, characterized in that: The groove walls on both sides of the groove are frame sealing surfaces and are interference fit with the frame.

6. A split filter element according to claim 5, characterized in that: An annular notch is provided at the inner side of the bottom of the sealing ring, the groove is provided on the bottom wall of the annular notch, and the side wall of the annular notch is an inclined surface.

7. A split filter element according to claim 6, characterized in that: The sealing ring is made of EPDM rubber.

8. A split filter element according to claim 7, characterized in that: The sealing ring is an annular structure, which is a circular ring structure.

9. The split filter element according to claim 7, characterized in that: The sealing ring is an annular structure, and the annular structure is an elliptical ring structure.

10. The split filter element according to claim 7, characterized in that: The sealing ring is an annular structure, and the annular structure is a square ring structure.

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