Internal bypass oil return filter

Abstract

The utility model discloses an internal bypass oil return filter which comprises a shell, the shell comprises a shell body, a partition plate is arranged in the middle of the shell body, the shell body and the partition plate are of an integrated structure, a through hole is formed in the middle of the partition plate, a fine filter element is installed at the position, above the partition plate, of the shell body, and a base is installed at the top end of the shell. A top cover is mounted at the top end of the base, and a filter element pressing ring for pressing the fine filter element is mounted in the base; a coarse filter element is installed on the shell body and located below the partition plate, through holes are evenly formed in the positions, located on the outer side of the coarse filter element, of the shell body, and a bottom cover is installed at the position, located at one end of the coarse filter element, of the shell body; a gasket is installed on the base and located on the outer side of the shell, the gasket comprises a gasket body, and convex ribs are arranged on the two sides of the gasket body. By adopting the convex ribs, the sealing effect of the gasket can be improved; the bypass valve and the filter element are integrally formed, the risk that the bypass valve is not replaced in time in use is avoided, and the manufacturing cost of the bypass valve is reduced.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically an internal bypass return oil filter. Background Technology

[0002] The primary function of filters in hydraulic systems is to remove solid contaminants from the working medium, maintaining its cleanliness. Most hydraulic system malfunctions are caused by contamination of the working medium, making filters indispensable. In hydraulic transmission systems, oil filtration devices are required to remove impurities such as iron filings and sludge from the oil.

[0003] The existing publication number CN221451880U discloses an in-tank oil return filter element, including a filter element housing and a retainer. A fine filter element is disposed within the filter element housing. A base is installed at one end of the filter element housing, and an upper end cover is installed at the end of the base away from the filter element housing. A filter element pressure ring is disposed between the upper end cover and the fine filter element. A coarse filter element and a retainer are installed at the end of the filter element housing away from the fine filter element. Through holes are opened on both sides of the filter element housing at the end of the retainer. A coarse filter element end cover and a bypass valve are installed at the end of the retainer away from the filter element housing. Oil enters through the interface on the side of the base, is filtered by the fine filter element, and then discharged through the through holes on both sides of the filter element housing. This improves the filtration accuracy and dirt holding capacity of the filter, and can filter oxides, harmful acids, and moisture generated during the use of lubricating oil, thereby greatly extending the service life of the lubricating oil. Filter paper is integrated into this filter element, increasing the filtration area and improving the filtration accuracy.

[0004] While existing technologies have increased the filtration area and improved filtration accuracy to some extent, they are prone to oil leakage due to poor sealing at the base. To solve the above technical problems, we propose an internal bypass return oil filter. Utility Model Content

[0005] The purpose of this invention is to provide an internal bypass return oil filter to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an internal bypass return oil filter, comprising a housing, the housing comprising a housing body, a partition disposed in the middle of the housing body, the housing body and the partition being an integral structure, a through hole being provided in the middle of the partition, a fine filter element being installed on the housing body above the partition, a base being installed at the top of the housing, a top cover being installed at the top of the base, and a filter element pressure ring for pressing the fine filter element being installed inside the base; a coarse filter element being installed on the housing body below the partition, through holes being evenly provided on the outer side of the housing body around the coarse filter element, and a bottom cover being installed on one end of the housing body around the coarse filter element; a gasket being installed on the outer side of the base, the gasket comprising a gasket body, and ribs being provided on both sides of the gasket body.

[0007] Preferably, the bottom cover is equipped with a bypass valve inside the housing.

[0008] Preferably, the main body of the housing has at least two locking holes at the bottom cover, and the bottom cover has a buckle that engages with the locking holes.

[0009] Preferably, the housing body has at least two positioning protrusions at the bottom cover, and the bottom cover has positioning slots that cooperate with the positioning protrusions.

[0010] Preferably, an upper limit ring and a lower limit ring are respectively provided on both sides of the partition, and supporting ribs are evenly provided on one side of the fine filter element of the partition.

[0011] Preferably, the gasket body and the rib are an integral structure, and the gasket is a rubber component.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The gasket body has raised ribs on both sides. The raised ribs can improve the sealing effect of the gasket, so that the sealing performance after the base is installed is better and there will be no oil leakage problem.

[0014] 2. The main body of the housing has at least two locking holes at the bottom cover. The bottom cover has a buckle that mates with the locking holes. The buckle and locking holes facilitate the assembly and disassembly of the bottom cover and the housing. The main body of the housing has at least two positioning protrusions at the bottom cover. The bottom cover has a positioning slot that mates with the positioning protrusions. The mate between the positioning protrusions and the positioning slots provides a positioning and guiding function for the assembly of the bottom cover and the housing.

[0015] 3. The bypass valve and filter element are integrally molded, avoiding the risk of untimely replacement of the bypass valve during use, and reducing the manufacturing cost of the bypass valve. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a structural schematic diagram of the present invention from the bottom view;

[0019] Figure 3 This is the front view of this utility model;

[0020] Figure 4 This is a cross-sectional view of the present invention;

[0021] Figure 5 This is a utility model Figure 4 A schematic diagram of the structure during filter element removal;

[0022] Figure 6 This is a schematic diagram of the structure of the gasket of this utility model.

[0023] In the diagram: 1. Housing; 2. Bypass valve; 3. Bottom cover; 4. Base; 5. Top cover; 6. Gasket; 7. Filter element pressure ring; 8. Fine filter element; 9. Coarse filter element; 11. Through hole; 12. Clip hole; 13. Positioning protrusion; 14. Housing body; 15. Support rib; 16. Upper limit ring; 17. Lower limit ring; 61. Gasket body; 62. Raised rib. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-6In this embodiment of the present invention, an internal bypass return oil filter includes a housing 1, the housing 1 including a housing body 14, a partition plate disposed in the middle of the housing body 14, the housing body 14 and the partition plate being an integral structure, a through hole being provided in the middle of the partition plate, a fine filter element 8 being installed on the housing body 14 above the partition plate, a base 4 being installed at the top of the housing 1, a top cover 5 being installed at the top of the base 4, and a filter element pressure ring 7 for pressing the fine filter element 8 being installed inside the base 4; a coarse filter element 9 being installed on the housing body 14 below the partition plate, the housing body 1... 4. Through holes 11 are evenly arranged on the outside of the coarse filter element 9. The main body 14 of the housing is equipped with a bottom cover 3 at one end of the coarse filter element 9. The bottom cover 3 is equipped with a bypass valve 2 inside the housing 1. The base 4 is equipped with a gasket 6 on the outside of the housing 1. The gasket 6 includes a gasket body 61. Both sides of the gasket body 61 are provided with ribs 62. The ribs 62 can improve the sealing effect of the gasket 6, so that the sealing performance after the base is installed is better and there will be no oil leakage problem. The gasket body 61 and the ribs 62 are an integral structure. The gasket 6 is a rubber part.

[0026] The main body 14 of the housing is provided with at least two locking holes 12 at the bottom cover 3. The bottom cover 3 is provided with buckles that cooperate with the locking holes 12. The buckles and locking holes facilitate the disassembly and assembly of the bottom cover 3 and the housing. The main body 14 of the housing is provided with at least two positioning protrusions 13 at the bottom cover 3. The bottom cover 3 is provided with positioning slots that cooperate with the positioning protrusions 13. The cooperation between the positioning protrusions 13 and the positioning slots improves the positioning and guiding function for the assembly of the bottom cover 3 and the housing 1. The two sides of the partition are respectively provided with an upper limit ring 16 and a lower limit ring 17. The partition is provided with supporting ribs 15 evenly arranged on one side of the fine filter element 8.

[0027] The working principle of this utility model is as follows: Both sides of the gasket body are provided with raised ribs, which improve the sealing effect of the gasket, resulting in better sealing performance after the base is installed, preventing oil leakage. The bypass valve and filter element are integrally molded, avoiding the risk of untimely replacement of the bypass valve during use, and reducing the manufacturing cost of the bypass valve.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An internal bypass return oil filter, comprising a housing (1), characterized in that: The housing (1) includes a housing body (14), a partition is provided in the middle of the housing body (14), the housing body (14) and the partition are an integral structure, a through hole is provided in the middle of the partition, a fine filter element (8) is installed on the housing body (14) above the partition, a base (4) is installed on the top of the housing (1), a top cover (5) is installed on the top of the base (4), and a filter element pressure ring (7) for pressing the fine filter element (8) is installed inside the base (4); a coarse filter element (9) is installed on the housing body (14) below the partition, through holes (11) are evenly provided on the outer side of the coarse filter element (9) on the housing body (14), and a bottom cover (3) is installed on one end of the housing body (14) on the coarse filter element (9); a gasket (6) is installed on the outer side of the base (4) on the housing (1), the gasket (6) includes a gasket body (61), and ribs (62) are provided on both sides of the gasket body (61).

2. The internal bypass return oil filter according to claim 1, characterized in that: The bottom cover (3) is located inside the housing (1) and a bypass valve (2) is installed.

3. The internal bypass return oil filter according to claim 1, characterized in that: The main body of the housing is provided with at least two locking holes (12) at the bottom cover (3), and the bottom cover (3) is provided with a buckle that cooperates with the locking holes (12).

4. The internal bypass return oil filter according to claim 3, characterized in that: The main body of the housing is provided with at least two positioning protrusions (13) at the bottom cover (3), and the bottom cover (3) is provided with positioning slots that cooperate with the positioning protrusions (13).

5. The internal bypass return oil filter according to claim 1, characterized in that: The partition is provided with an upper limit ring (16) and a lower limit ring (17) on both sides, and the partition is provided with supporting ribs (15) evenly on one side of the fine filter element (8).

6. The internal bypass return oil filter according to claim 1, characterized in that: The gasket body (61) and the rib (62) are an integral structure, and the gasket (6) is a rubber part.

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