Oil filter with magnetic pre-filtering device

Abstract

The utility model discloses an oil filter with a magnetic pre-filtering device, which comprises a filter body provided with an oil inlet and an oil outlet. The pre-filtering mechanism is used for forming a magnetic pre-filtering structure, the mounting mechanism is used for forming a built-in mounting structure, the filter element mechanism is used for forming a composite filtering structure, the pre-filtering mechanism is arranged at the oil inlet, and the mounting mechanism corresponds to the oil outlet and is assembled in the filter body. The oil filter has the advantages that the oil filter is simple in structure, the pre-filtering mechanism is arranged and detachably assembled at the oil inlet of the oil filter, the oil filter is convenient to disassemble, assemble and maintain, the use flexibility is high, and the oil filter is convenient to clean and maintain. And even if a certain part of the filter element mechanism fails, the filter element mechanism still has certain pre-filtering capacity, the working stability is high, and the mounting mechanism is arranged to be matched with the filter element mechanism to form a double-filtering structure to finely filter oil.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to an oil filter equipped with a magnetic pre-filtration device. Background Technology

[0002] In existing technology, a filter refers to an accessory that uses filter paper to filter impurities or gases. Generally, it refers to automotive filters, which are engine components. Based on different filtration functions, they are categorized as: oil filters, fuel filters, gasoline filters, diesel filters, oil-water separators, hydraulic filters, air filters, and cabin air filters. Oil filters consist of a sludge inlet, a clean oil outlet, a rubber seal, a threaded interface, a backflow suppression valve, a central tube, a rigid metal shell, filter paper, and an overflow valve. While commercially available oil filters can filter most impurities from the oil using filter paper, some iron impurities in the oil cannot be effectively adsorbed and removed by the filter paper. This leads to iron impurities accumulating easily and causing blockages in the pipes as the oil flows. This results in the filter element of the return oil filtration device being overloaded in a short period, causing filter failure and allowing contaminants to enter the return oil tank, damaging mechanical components. Furthermore, the multiple pre-disassembly operations required when replacing the filter paper increase the complexity of the replacement process.

[0003] Chinese utility model patent application number 202122119155.5 discloses an oil filter equipped with a magnetic pre-filtration device. The technical solution includes: a housing with a threaded cover plate at the top, the cover plate being threadedly connected to the housing; a clean oil outlet and multiple sludge inlets at the top of the cover plate; a filtration mechanism inside the housing; a central tube located inside the housing; filter paper fixedly mounted outside the central tube; a magnetic ring located outside the filter paper inside the housing; and two filtration components, each including a frame fixedly mounted on one side wall of the housing cavity. A first rotating rod is located inside the frame, penetrating the top of the frame and connected to it via a bearing. However, the structure of the pre-filter in this type of oil filter equipped with a magnetic pre-filter is relatively complex. If one part of it fails, it cannot achieve the pre-filtering effect, resulting in poor working stability. Furthermore, since it is located inside the filter, it is not convenient to disassemble and maintain, and its usage flexibility is poor. Utility Model Content

[0004] The purpose of this invention is to provide an oil filter equipped with a magnetic pre-filtration device.

[0005] To achieve the above objectives, the technical solution proposed by this utility model is as follows:

[0006] An oil filter equipped with a magnetic pre-filtration device includes a filter body with an oil inlet and an oil outlet. It also includes a pre-filtration mechanism for forming a magnetic pre-filtration structure, an installation mechanism for forming a built-in installation structure, and a filter element mechanism for forming a composite filtration structure. The pre-filtration mechanism is arranged at the oil inlet, the installation mechanism is assembled inside the filter body corresponding to the oil outlet, and the filter element mechanism is arranged on the side of the installation mechanism and located inside the filter body.

[0007] The pre-filtration mechanism includes a pre-filter tube, a pre-filter end cap, and a pre-filter core assembly. The pre-filter tube is located at the oil inlet and one end of it is fitted into the oil inlet. The pre-filter end cap is located at the end of the pre-filter tube away from the oil inlet and is threaded into the pre-filter tube. The pre-filter core assembly is arranged inside the pre-filter tube, and the pre-filter tube is configured as a segmented tube structure corresponding to the pre-filter core assembly.

[0008] The pre-filter core assembly includes a pre-filter core mesh and a magnetic adsorption component. The pre-filter core mesh is disposed inside the pre-filter tube and inserted into the pre-filter tube. The magnetic adsorption component is disposed inside one end of the pre-filter tube that is perpendicular to the oil inlet and inserted into the pre-filter tube. The magnetic adsorption component is located between the pre-filter core mesh and the pre-filter tube, and a gap is left between them.

[0009] The mounting mechanism includes a mounting rod, a mounting spring, and a mounting base. The mounting rod is disposed inside the filter body and fixedly connected to the filter body. The mounting rod is arranged vertically. The mounting spring is disposed at the lower part of the mounting rod and sleeved with the mounting rod. There are two sets of mounting bases, which are arranged side by side at intervals on both ends of the mounting rod and sleeved with the mounting rod. The lower mounting base abuts against the mounting spring.

[0010] The end of the mounting rod near the oil outlet is configured with a hollow structure, and the side of the mounting rod is provided with an oil passage hole corresponding to the hollow structure inside.

[0011] The filter element mechanism includes a filter element mounting plate, a filter element outer mesh, and a magnetic filter screen. There are two sets of filter element mounting plates, which are respectively disposed inside the two sets of mounting bases and are snap-fitted to the corresponding mounting bases. The filter element outer mesh is disposed between the two sets of filter element mounting plates and its end is fixedly connected to the filter element mounting plate. The magnetic filter screen is disposed inside the filter element outer mesh and its end is fixedly connected to the filter element mounting plate. The magnetic filter screen and the filter element outer mesh together form a double-layer filtration structure.

[0012] It also includes a filter element spring, which is disposed between the two sets of filter element mounting plates and its two ends respectively abut against the two sets of filter element mounting plates. The filter element spring is arranged inside the magnetic filter screen, and a filter paper structure is disposed between the filter element spring and the magnetic filter screen.

[0013] The filter body consists of an outer shell and a cover. The cover is located at the upper end of the outer shell and is fastened to the outer shell. The oil inlet and the oil outlet are located on the cover. The end of the mounting rod away from the mounting spring is connected to the oil outlet on the cover.

[0014] It also includes an oil unloading valve and an exhaust valve. The oil unloading valve is located on the lower side of the housing and communicates with the interior of the filter body. The exhaust valve is located on the upper side of the cover away from the oil inlet and communicates with the interior of the filter body.

[0015] It also includes a mounting flange, which is disposed on the upper side of the filter body and fixedly connected to the filter body, and the filter body is mounted on the engine through the mounting flange.

[0016] The beneficial effects of this utility model are:

[0017] With a simple structure and a pre-filtration mechanism, which is detachably mounted at the oil inlet of the filter, it is easy to disassemble and maintain, and is highly flexible in use. Even if a part of it fails, it will still have a certain pre-filtration capacity. It has strong working stability and is equipped with an installation mechanism that works with the filter element mechanism to form a dual filtration structure for fine filtration of oil, which can effectively improve the oil filtration effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a sectional view of the present invention;

[0020] Figure 3 This is a cross-sectional view of the pre-filtering mechanism of this utility model.

[0021] In the diagram: 1. Filter body; 2. Oil inlet; 3. Oil outlet; 4. Pre-filter pipe; 5. Pre-filter end cap; 6. Pre-filter core screen; 7. Magnetic adsorption component; 8. Mounting support rod; 9. Mounting spring; 10. Mounting base; 11. Filter element mounting plate; 12. Filter element outer screen; 13. Magnetic filter screen; 14. Filter element spring; 15. Unloading valve; 16. Vent valve; 17. Mounting flange. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings.

[0023] An oil filter equipped with a magnetic pre-filtration device includes a filter body 1, an oil inlet 2 and an oil outlet 3 on the filter body 1, a pre-filtration mechanism for forming a magnetic pre-filtration structure, an installation mechanism for forming an internal mounting structure, and a filter element mechanism for forming a composite filtration structure. The pre-filtration mechanism is arranged at the oil inlet 2, the installation mechanism is assembled inside the filter body 1 corresponding to the oil outlet 3, and the filter element mechanism is disposed on the side of the installation mechanism and located inside the filter body 1. A schematic diagram of the overall structure of this utility model is shown below. Figure 1 As shown.

[0024] The pre-filtration mechanism includes a pre-filter pipe 4, a pre-filter end cap 5, and a pre-filter core assembly. The pre-filter pipe 4 is located at the oil inlet 2, with one end fitted into the oil inlet 2. The pre-filter end cap 5 is located at the end of the pre-filter pipe 4 furthest from the oil inlet 2 and is threadedly connected to the pre-filter pipe 4. The pre-filter core assembly is arranged inside the pre-filter pipe 4. The pre-filter pipe 4 is configured as a segmented pipe structure corresponding to the pre-filter core assembly. The pre-filtration mechanism, through the cooperation of the pre-filter pipe 4, the pre-filter end cap 5, and the pre-filter core assembly, forms a magnetic pre-filtration structure to pre-filter the oil before it enters the filter. The pre-filter pipe 4 serves as the main body of the pre-filtration structure, providing installation support for the pre-filter core assembly. The pre-filter end cap 5, together with the pre-filter pipe 4, forms a detachable outer shell structure, providing installation support for the pre-filter core assembly. The pre-filter core assembly is used to pre-filter the oil passing through the pre-filter pipe 4. A cross-sectional view of this utility model is shown below. Figure 2 As shown.

[0025] The pre-filter assembly includes a pre-filter screen 6 and a magnetic adsorption component 7. The pre-filter screen 6 is disposed inside and inserted into the pre-filter tube 4. The magnetic adsorption component 7 is disposed inside one end of the pre-filter tube 4 near the oil inlet 2 and inserted into the pre-filter tube 4. The magnetic adsorption component 7 is located between the pre-filter screen 6 and the pre-filter tube 4, with a gap between them. The pre-filter assembly, through the cooperation of the pre-filter screen 6 and the magnetic adsorption component 7, pre-filters the oil passing through the pre-filter tube 4. The pre-filter screen 6 is used for initial filtration of the oil to filter out some impurities in the oil, and the magnetic adsorption component 7 is used for pre-filtering metallic impurities in the oil. A cross-sectional view of the pre-filter mechanism of this utility model is shown below. Figure 3 As shown.

[0026] The mounting mechanism includes a mounting rod 8, a mounting spring 9, and a mounting base 10. The mounting rod 8 is located inside the filter body 1 and is fixedly connected to the filter body 1. The mounting rod 8 is arranged vertically. The mounting spring 9 is located at the lower part of the mounting rod 8 and is sleeved with the mounting rod 8. There are two sets of mounting bases 10, which are arranged side by side at intervals on both ends of the mounting rod 8 and are sleeved with the mounting rod 8. The lower mounting base 10 abuts against the mounting spring 9. The mounting mechanism, through the cooperation of the mounting rod 8, the mounting spring 9, and the mounting base 10, serves as the mounting structure inside the filter body 1, thereby providing mounting support for the filter element mechanism. The mounting rod 8 provides mounting support for the mounting spring 9 and the mounting base 10. The mounting spring 9 provides elastic support for the lower mounting base 10, thereby providing elastic support for the filter element mechanism. The mounting base 10 provides mounting support for the filter element mechanism to install the filter element mechanism on the mounting rod 8.

[0027] The end of the mounting rod 8 near the oil outlet 3 is internally hollow, and the side of the mounting rod 8 is provided with an oil passage hole corresponding to the internal hollow structure. The internal hollow structure of the mounting rod 8 near the oil outlet 3 is used to form the oil passage structure on the mounting rod 8, and the oil passage hole is used to meet the oil passage requirements of the oil passage structure.

[0028] The filter element mechanism includes a filter element mounting plate 11, a filter element outer screen 12, and a magnetic filter screen 13. There are two sets of filter element mounting plates 11, which are respectively set inside the two sets of mounting bases 10 and are snapped into the corresponding mounting bases 10. The filter element outer screen 12 is set between the two sets of filter element mounting plates 11 and its end is fixedly connected to the filter element mounting plate 11. The magnetic filter screen 13 is set inside the filter element outer screen 12 and its end is fixedly connected to the filter element mounting plate 11. The magnetic filter screen 13 and the filter element outer screen 12 together form a double-layer filtration structure. The filter element mounting plate 11 is used to provide installation support for the filter element outer screen 12 and the magnetic filter screen 13. The filter element outer screen 12 is used to perform primary filtration of the oil entering the filter. The magnetic filter screen 13 is used to perform secondary filtration of the oil filtered by the filter element outer screen 12 to remove metal impurities in the oil.

[0029] It also includes a filter element spring 14, which is disposed between two sets of filter element mounting plates 11 and its two ends respectively abut against the two sets of filter element mounting plates 11. The filter element spring 14 is arranged inside the magnetic filter screen 13. A filter paper structure is arranged between the filter element spring 14 and the magnetic filter screen 13. The filter element spring 14 is used as an elastic support structure inside the filter element mechanism, thereby providing installation support for the filter paper structure and ensuring the degree of fit between the filter paper structure and the magnetic filter screen 13.

[0030] The filter body 1 consists of an outer shell and a cover. The cover is located at the upper end of the outer shell and is fastened to the outer shell. The oil inlet 2 and the oil outlet 3 are located on the cover. The end of the mounting rod 8 away from the mounting spring 9 is connected to the oil outlet 3 on the cover. The outer shell and the cover together form a detachable filter body 1 structure, which facilitates the disassembly and maintenance of the filter.

[0031] It also includes an oil discharge valve 15 and an exhaust valve 16. The oil discharge valve 15 is located on the lower side of the housing and communicates with the interior of the filter body 1. The exhaust valve 16 is located on the upper side of the cover away from the oil inlet 2 and communicates with the interior of the filter body 1. The oil discharge valve 15 is used as an oil discharge structure on the filter body 1, and waste oil in the filter body 1 can be discharged from the filter through the oil discharge valve 15. The exhaust valve 16 is used as an exhaust structure on the filter body 1, and the filter body 1 can be vented through the exhaust valve 16.

[0032] It also includes a mounting flange 17, which is located on the upper side of the filter body 1 and is fixedly connected to the filter body 1. The filter body 1 is mounted on the engine via the mounting flange 17. The mounting flange 17 serves as a mounting structure on the filter body 1 to meet the installation requirements of the filter.

[0033] The pre-filtration mechanism can be assembled or disassembled according to actual usage requirements.

[0034] Working principle:

[0035] In use, the filter is installed on the engine via the mounting flange 17. The pre-filter mechanism is assembled at the oil inlet 2. Then, the oil outlet 3 and the end on the pre-filter end cap 5 are connected to the engine's oil circuit. When oil filtration is required, the oil in the engine flows into the pre-filter mechanism through the pre-filter end cap 5. The pre-filter core mesh 6 performs initial filtration on the oil to filter out some impurities. The magnetic adsorption component 7 pre-filters the metal impurities in the oil. The pre-filtered oil flows into the filter via the oil inlet 2. The filter element outer mesh 12 performs initial filtration on the oil entering the filter. The magnetic filter mesh 13 performs secondary filtration on the oil filtered by the filter element outer mesh 12 to remove metal impurities. The filter paper structure further filters the oil that has passed through the magnetic filter mesh 13. The filtered oil enters the oil circuit structure inside the mounting support rod 8 through the oil passage hole, and then flows out of the filter via the oil outlet 3 to complete the oil filtration operation.

[0036] The advantages of this utility model are its simple structure, the presence of a pre-filtration mechanism that is detachably mounted at the oil inlet of the filter, facilitating disassembly and maintenance, high flexibility of use, and the ability to maintain a certain level of pre-filtration even if a part of it fails. It also features strong operational stability, with an installation mechanism that works in conjunction with the filter element mechanism to form a dual filtration structure for fine filtration of the oil, effectively improving the oil filtration effect.

[0037] The above description details one embodiment of the present utility model, but it is merely a preferred embodiment and should not be construed as limiting the scope of the present utility model. All equivalent variations and improvements made within the scope of the present utility model application should still fall within the patent coverage of the present utility model.

Claims

1. An oil filter provided with a magnetic prefiltering device, comprising a filter body (1) provided with an oil inlet (2) and an oil outlet (3), characterized in that, It also comprises a pre-filter mechanism for constituting a magnetic pre-filter structure, an installation mechanism for constituting a built-in installation structure, and a filter core mechanism for constituting a composite filter structure, the pre-filter mechanism is arranged at the oil inlet (2), the installation mechanism is assembled in the inside of the filter body (1) corresponding to the oil outlet (3), and the filter core mechanism is arranged at the side of the installation mechanism and in the inside of the filter body (1); The pre-filter mechanism comprises a pre-filter pipe (4), a pre-filter end cover (5), and a pre-filter core group, the pre-filter pipe (4) is provided at the oil inlet (2) and is connected with the oil inlet (2) at one end, the pre-filter end cover (5) is provided at the end of the pre-filter pipe (4) away from the oil inlet (2) and is threadedly connected with the pre-filter pipe (4), and the pre-filter core group is arranged in the inside of the pre-filter pipe (4), and the pre-filter pipe (4) is provided in a segmented pipe body structure corresponding to the pre-filter core group.

2. An oil filter provided with a magnetic prefiltering device as claimed in claim 1, characterized in that The pre-filter core group comprises a pre-filter core net (6) and a magnetic adsorption member (7), the pre-filter core net (6) is arranged in the inside of the pre-filter pipe (4) and is inserted with the pre-filter pipe (4), the magnetic adsorption member (7) is arranged in the inside of the end of the pre-filter pipe (4) away from the oil inlet (2) and is inserted with the pre-filter pipe (4), and the magnetic adsorption member (7) is located between the pre-filter core net (6) and the pre-filter pipe (4) and has a spacing between the magnetic adsorption member (7) and the pre-filter core net (6).

3. An oil filter provided with a magnetic prefiltering device as claimed in claim 2, characterized in that The installation mechanism comprises an installation support rod (8), an installation spring (9), and an installation base (10), the installation support rod (8) is arranged in the inside of the filter body (1) and is fixedly connected with the filter body (1), the installation support rod (8) is arranged vertically, the installation spring (9) is arranged at the lower part of the installation support rod (8) and is sleeved with the installation support rod (8), and the installation base (10) is provided with two groups, the two groups of installation bases (10) are arranged in parallel and spaced apart at the two end sides of the installation support rod (8) and are sleeved with the installation support rod (8), and the lower installation base (10) abuts against the installation spring (9).

4. An oil filter provided with a magnetic prefiltering device as claimed in claim 3, characterized in that the magnetic field is generated by a permanent magnet. The end of the installation support rod (8) close to the oil outlet (3) is provided with a hollow structure in the inside, and the side of the installation support rod (8) is provided with an oil passing hole corresponding to the hollow structure in the inside.

5. An oil filter provided with a magnetic prefiltering device as claimed in claim 4, characterized in that The filter core mechanism comprises a filter core mounting disc (11), a filter core outer net (12), and a magnetic filter net (13), the filter core mounting disc (11) is provided with two groups, the two groups of filter core mounting discs (11) are respectively arranged at the inner sides of the two groups of installation bases (10) and are clampedly connected with the corresponding installation bases (10), the filter core outer net (12) is arranged between the two groups of filter core mounting discs (11) and is fixedly connected with the filter core mounting discs (11) at the ends, the magnetic filter net (13) is arranged at the inner side of the filter core outer net (12) and is fixedly connected with the filter core mounting disc (11) at the end, and the magnetic filter net (13) and the filter core outer net (12) jointly constitute a double-layer filter structure.

6. An oil filter provided with a magnetic prefiltering device as claimed in claim 5, characterized in that Further comprising a filter spring (14) arranged between the two groups of filter mounting discs (11) and abutting with both ends of the two groups of filter mounting discs (11) respectively, the filter spring (14) is arranged on the inner side of the magnetic filter screen (13), and filter paper structure is arranged between the filter spring (14) and the magnetic filter screen (13).

7. An oil filter provided with a magnetic prefiltering device as claimed in claim 6, characterized in that the magnetic field is generated by a permanent magnet. The filter body (1) is composed of a shell and a buckle cover, the buckle cover is arranged on the upper end of the shell and buckled with the shell, the oil inlet (2) and the oil outlet (3) are located on the buckle cover, and the mounting branch (8) is communicated with the oil outlet (3) on the buckle cover away from the mounting spring (9).

8. An oil filter provided with a magnetic prefiltering device as claimed in claim 7, characterized in that the magnetic field is generated by a permanent magnet. Further comprising an oil discharge valve (15) and an exhaust valve (16), the oil discharge valve (15) is arranged on the lower side of the shell and communicated with the inside of the filter body (1), and the exhaust valve (16) is arranged on the upper side of the buckle cover away from the oil inlet (2) and communicated with the inside of the filter body (1).

9. An oil filter provided with a magnetic prefiltering device according to claim 8, characterized in that, Further comprising a mounting flange (17), the mounting flange (17) is arranged on the upper side of the filter body (1) and fixedly connected with the filter body (1), and the filter body (1) is assembled on the engine through the mounting flange (17).

Images