Oil filter for adsorbing metal impurities

Abstract

The utility model provides a kind of oil filter for adsorbing metal impurities, including the frame being composed of upper end cap, lower end cap and inner skeleton, and filter paper being sleeved on the outer periphery of inner skeleton;The first end of filter paper is clamped and limited in upper end cap, and the second end of filter paper is clamped and limited in lower end cap;Upper end cap is at least provided with one oil outlet, for outputing the engine oil after filtering by filter paper into inner skeleton;Lower end cap is correspondingly provided with magnetic force component, for adsorbing metal impurities in engine oil;Filter paper is sleeved on inner skeleton by filter paper, and filter paper is further clamped in upper end cap and lower end cap, greatly reduce the dismounting difficulty of whole machine, beneficial to the replacement and maintenance of filter paper;Lower end cap is correspondingly provided with magnetic force component, can adsorb magnetic metal particles such as iron filings in engine oil, prevent its further abrasion to oil way structure, to prolong the service life of engine, while adsorbing metal debris can reduce the impurity content in engine oil, improve the cleanliness of engine oil.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and more specifically, to an oil filter for adsorbing metallic impurities. Background Technology

[0002] The oil filter is a crucial component in the lubrication system of an internal combustion engine, protecting the engine and removing particulate impurities from the oil. Traditional filters typically consist of a housing, end caps, an inner frame, and filter paper. The filter paper filters particulate impurities from the oil, and the oil that has passed through the filter returns to the oil passages. Currently, the installation and removal of filter paper in commercially available oil filters is quite complex and cumbersome, especially the direct connection between the frame and the end caps, which causes significant inconvenience for subsequent disassembly, installation, and maintenance. Furthermore, while oil filters can effectively remove dust impurities from the oil through the filter paper, they cannot effectively intercept fine metal dust and other impurities, inevitably leading to these fine metal dust particles being transferred directly into the downstream oil passages. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide an oil filter for adsorbing metallic impurities, so as to solve the above problems.

[0004] The present invention adopts the following solution: This application provides an oil filter for adsorbing metallic impurities, comprising a frame consisting of an upper end cover, a lower end cover, and an inner skeleton, and filter paper fitted around the outer periphery of the inner skeleton; a first end of the filter paper is clamped and limited inside the upper end cover, and a second end of the filter paper is clamped and limited inside the lower end cover; the upper end cover has at least one oil outlet hole for discharging oil that has been filtered by the filter paper and entered the inner skeleton; the lower end cover is correspondingly provided with a magnetic component for adsorbing metallic impurities in the oil.

[0005] As a further improvement, the magnetic component is disposed on the bottom surface of the lower end cover so that the magnetic component and the oil in the inner frame are blocked by the lower end cover and do not come into direct contact.

[0006] As a further improvement, the magnetic component includes a plurality of magnets, which are regularly arranged in a ring around the center of the bottom surface of the lower end cover and located on the outer periphery of the inner frame.

[0007] As a further improvement, the lower end cover is recessed inward with a mounting groove, and the magnet is correspondingly installed and removed into its respective mounting groove, so that the inward portion is recessed into the frame.

[0008] As a further improvement, the wall thickness of the mounting groove is equivalent to the thickness of the lower end cover, and it is U-shaped and recessed along the bottom surface of the lower end cover.

[0009] As a further improvement, the magnet is at least partially exposed outside the mounting groove, protruding from the bottom surface of the lower end cap.

[0010] As a further improvement, the inner frame and the filter paper are nested and fixed together, and the filter paper is engaged and fixed with the upper end cover and the lower end cover, so that the inner frame is pressed tightly against the upper end cover and the lower end cover respectively.

[0011] As a further improvement, the inner skeleton is configured as a hollow columnar body, and at equal heights on the columnar body, there are corresponding mating rings that interlock with the inner ring of the filter paper, and the mating rings are connected by connecting bridges.

[0012] As a further improvement, the outer periphery of the mating ring is provided with a serrated portion that mates with and abuts against the filter paper.

[0013] By adopting the above technical solution, the present invention can achieve the following technical effects: 1. The oil filter for adsorbing metallic impurities of this application has filter paper with both ends clamped and limited in the upper and lower end covers, respectively, to ensure that the filter paper can reliably fit with the end covers and the inner frame. This eliminates the direct connection between the inner frame and the two end covers. By fitting the filter paper onto the inner frame and further clamping it to the upper and lower end covers, the disassembly and assembly difficulty of the whole machine is greatly reduced, which is conducive to the replacement and maintenance of the filter paper.

[0014] 2. An oil outlet is provided on the upper end cap to ensure that the oil filtered by the filter paper can smoothly enter the inner frame and be output from the oil outlet. A magnetic component is provided on the lower end cap to attract magnetic metal particles such as iron filings in the oil, preventing them from causing further wear on the oil passage structure and thus extending the service life of the engine. At the same time, attracting metal filings can reduce the impurity content in the oil and improve the cleanliness of the oil. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an oil filter for adsorbing metallic impurities according to an embodiment of the present invention; Figure 2 yes Figure 1 Structural diagrams from other perspectives; Figure 3 This is a cross-sectional view of an oil filter for adsorbing metallic impurities according to an embodiment of the present invention; Figure 4 This is a disassembly diagram of an oil filter for adsorbing metallic impurities according to an embodiment of the present invention; Figure 5 yes Figure 4 A schematic diagram of the internal skeleton.

[0016] Icons: 1-Upper end cap; 2-Lower end cap; 3-Inner frame; 4-Filter paper; 5-Oil outlet; 6-Magnet; 7-Mounting groove; 8-Matching ring; 9-Connecting bridge; 10-Serrated part. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0018] Example Combination Figures 1 to 5 This embodiment provides an oil filter for adsorbing metallic impurities, comprising a frame consisting of an upper end cap 1, a lower end cap 2, and an inner skeleton 3, and filter paper 4 fitted around the outer periphery of the inner skeleton 3. The first end of the filter paper 4 is clamped and limited within the upper end cap 1, and the second end of the filter paper 4 is clamped and limited within the lower end cap 2. The upper end cap 1 has at least one oil outlet 5 for discharging the oil that has been filtered by the filter paper 4 and enters the inner skeleton 3. The lower end cap 2 is correspondingly provided with a magnetic component for adsorbing metallic impurities in the oil.

[0019] In the oil filter described above for adsorbing metallic impurities, the two ends of the filter paper 4 are respectively clamped and limited within the upper end cover 1 and the lower end cover 2, ensuring that the filter paper 4 can reliably cooperate with the end cover and the inner frame 3. This eliminates the direct connection between the inner frame 3 and the two end covers. By fitting the filter paper 4 onto the inner frame 3 and further clamping the filter paper 4 to the upper end cover 1 and the lower end cover 2, the disassembly and assembly difficulty of the whole machine is greatly reduced, which is conducive to the replacement and maintenance of the filter paper 4.

[0020] The upper end cap 1 is provided with an oil outlet hole 5 to ensure that the oil filtered by the filter paper 4 can smoothly enter the inner frame 3 and be output from the oil outlet hole 5. The lower end cap 2 is provided with a corresponding magnetic component, which can adsorb magnetic metal particles such as iron filings in the oil to prevent them from causing further wear on the oil circuit structure, thereby extending the service life of the engine. At the same time, adsorbing metal filings can reduce the impurity content in the oil and improve the cleanliness of the oil.

[0021] It should be mentioned that in this embodiment, the oil outlet 5 is located on the upper end cover 1 and is connected to the downstream oil passage through the oil outlet. Specifically, the oil (not shown in the figure) enters directly through the filter paper 4 along the outside of the filter paper and enters the inside of the filter paper, thereby reaching the inner frame 3 and the internal passage, and then outputs the oil from the oil outlet 5 to the downstream oil passage.

[0022] like Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the magnetic component is disposed on the bottom surface of the lower end cover 2, so that the magnetic component and the engine oil in the inner frame 3 are blocked by the lower end cover 2, and the two do not come into direct contact. Since the magnetic component is not directly exposed to the engine oil, the risk of corrosion, peeling, or oil contamination caused by long-term contact with engine oil can be effectively avoided. At the same time, it is convenient to perform external maintenance or replacement of the magnetic component without disassembling the oil passage or contacting the engine oil, thereby improving the reliability and maintenance convenience of the filter.

[0023] Understandably, the lower end cap 2, as an isolation layer, is made of non-magnetic material or non-magnetized metal that has little impact on magnetic field penetration, and its wall thickness should be controlled within a range that will not significantly attenuate the magnetic field, so as to ensure that the magnetic field can still effectively act on the oil and metal particles near the inner skeleton 3.

[0024] Specifically, the magnetic component includes several magnets 6, which are regularly arranged in a ring around the center of the bottom surface of the lower end cap 2 and located on the outer periphery of the inner frame 3. The regular ring arrangement of multiple magnets creates a uniform and continuous magnetic field band within the ring area, reducing blind spots or weak magnetic field areas caused by a single magnet, thereby improving the overall capture rate of magnetic metal particles in the oil. Furthermore, the multiple magnets ringed in the center of the lower end cap 2 and located on the outer periphery of the inner frame 3 allow the magnetic field to directly cover the oil entry path around the inner frame 3, causing metal particles entering the inner frame 3 to be magnetically attracted within a shorter path, greatly increasing the probability of adsorption.

[0025] Furthermore, the lower end cover 2 is recessed inward with a mounting groove 7, and the magnet 6 is correspondingly installed and detached within its respective mounting groove 7, with its inward portion recessed into the frame. Thus, by recessing the magnet 6 on the inner side and surrounding the middle of the lower end cover 2, the magnetic field can be brought closer to and concentrated in the oil inlet path around the outer periphery of the inner frame 3, further increasing the probability of metal particles being captured. Obviously, the magnet 6 can be either snap-fitted into the mounting groove 7 or glued to it.

[0026] Preferably, the wall thickness of the mounting groove 7 is approximately equal to the thickness of the lower end cover 2, and it is U-shaped and recessed along the bottom surface of the lower end cover 2. It can be manufactured using existing processes such as stamping, molding, or injection molding to avoid the problem of thin walls being easily deformed or having difficulty controlling tolerances, thereby improving the consistency of mass production and assembly efficiency.

[0027] It should be noted that the magnet is at least partially exposed outside the mounting groove 7, protruding from the bottom surface of the lower end cover 2. This partial protrusion allows the magnetic field to act more directly on the oil passages around the inner frame 3 with a shorter isolation layer, enhancing the adsorption capacity for magnetic metal particles. Simultaneously, by only partially exposing the magnet, mechanical protection and sealing are ensured while maintaining the magnetic field effect, allowing for quick disassembly and replacement.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the inner frame 3 and the filter paper 4 are interlocked and fixed together. The filter paper 4 is also engaged and fixed to the upper end cover 1 and the lower end cover 2, so that the inner frame 3 is pressed against the upper end cover 1 and the lower end cover 2 respectively. On one hand, the inner frame 3, after being interlocked with the filter paper 4 and pressed against the end cover, forms a rigid whole with the inner frame 3, filter paper 4, and end cover, preventing relative displacement or misalignment of the filter element during operation. This maintains a stable filtration cross-section and coaxial geometric relationship, ensuring consistent filtration performance. On the other hand, the pressing action of the inner frame 3 tightens the filter paper 4 and reliably fits it against the end cover, reducing the possibility of bulging, displacement, or bypass gaps in the filter paper 4 under high pressure or pulsating oil flow. Furthermore, the engagement of the filter paper 4 with the end cover and the pressing action of the inner frame 3 allow for axial pre-compression of the filter element, enhancing the contact seal between the end cover and the filter paper 4, reducing reliance on additional seals, and facilitating simple, rapid assembly and automated production.

[0029] like Figure 4 and Figure 5 As shown, in this embodiment, the inner skeleton 3 is configured as a hollow columnar body. At equal intervals along the columnar body, mating rings 8 are provided that interlock with the inner ring of the filter paper 4, and the mating rings 8 are connected by connecting bridges 9. The outer periphery of the mating rings 8 is provided with serrated portions 10 that engage with and abut against the filter paper 4.

[0030] In the above description, the equidistantly spaced mating rings 8 provide multi-point radial support for the inner ring of the filter paper 4, effectively preventing the filter paper 4 from localizing, wrinkling, or collapsing under oil flow scouring or axial pressure differential, thereby maintaining a stable filtration cross-section and lower bypass risk. The mating rings 8 are distributed at equal heights and connected by connecting bridges 9, giving the inner skeleton 3 good axial rigidity and positioning accuracy. This helps the filter paper 4, inner skeleton 3, and end cap remain coaxial and concentric, ensuring that the relative position of the oil outlet 5 and the inner skeleton 3 channel is always correct, stabilizing flow and pressure drop characteristics.

[0031] Furthermore, by using the serrated portion 10 on the outer periphery of the mating ring 8 to directly contact the outer ring of the filter paper 4 and clamp the filter paper 4 with a multi-point protrusion abutment, a reliable radial clamping and anti-slip engagement can be formed between the filter paper 4 and the inner frame 3, thereby improving the positioning stability and displacement capability of the filter paper 4 during assembly and operation. The progressive embedding force of the serrations achieves good stress distribution, avoiding localized damage or excessive compression caused by a single stop, ensuring both sealing and fixing effects while preventing excessive cutting of the filter paper 4 material, thus extending the filter element's service life.

[0032] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

Claims

1. An oil filter for adsorbing metallic impurities, characterized in that, It includes a frame consisting of an upper end cover, a lower end cover and an inner skeleton, and filter paper fitted around the outer periphery of the inner skeleton; the first end of the filter paper is clamped and limited inside the upper end cover, and the second end of the filter paper is clamped and limited inside the lower end cover; The upper end cap has at least one oil outlet hole for discharging the engine oil that has been filtered through filter paper and entered the inner frame; and the lower end cap is correspondingly provided with a magnetic component for adsorbing metal impurities in the engine oil.

2. The oil filter for adsorbing metallic impurities according to claim 1, characterized in that, The magnetic component is positioned on the bottom surface of the lower end cover so that the lower end cover blocks the magnetic component from contacting the oil in the inner frame.

3. The oil filter for adsorbing metallic impurities according to claim 2, characterized in that, The magnetic component includes several magnets, which are regularly arranged in a ring around the bottom of the lower end cover and located on the outer periphery of the inner frame.

4. The oil filter for adsorbing metallic impurities according to claim 3, characterized in that, The lower end cover has an inwardly recessed mounting groove, and the magnet is correspondingly installed and removed into its respective mounting groove, with the inward portion recessed into the frame.

5. The oil filter for adsorbing metallic impurities according to claim 4, characterized in that, The wall thickness of the mounting groove is equivalent to the thickness of the lower end cover, and it is U-shaped and recessed along the bottom surface of the lower end cover.

6. The oil filter for adsorbing metallic impurities according to claim 4, characterized in that, The magnet is at least partially exposed outside the mounting groove, protruding from the bottom surface of the lower end cap.

7. The oil filter for adsorbing metallic impurities according to claim 1, characterized in that, The inner frame and the filter paper are connected and fixed to each other, and the filter paper is engaged and fixed to the upper end cover and the lower end cover, so that the inner frame is pressed against the upper end cover and the lower end cover respectively.

8. The oil filter for adsorbing metallic impurities according to claim 7, characterized in that, The inner skeleton is configured as a hollow column, and at equal heights on the column, there are mating rings that interlock with the inner ring of the filter paper, and the mating rings are connected by connecting bridges.

9. The oil filter for adsorbing metallic impurities according to claim 8, characterized in that, The outer periphery of the mating ring is provided with a serrated portion that mates with and abuts against the filter paper.

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