Magnetic oil filter

Abstract

The utility model belongs to the technical field of engine oil filters, and particularly relates to a magnetic engine oil filter which comprises a shell, an auxiliary filter screen is fixedly connected in the shell, a filter block is arranged in the shell, filter holes are formed in the filter block, and a magnetic filter layer is arranged on the outer wall of the filter block. A fixed plate is fixedly connected to the interior of the filter block, a top spring is arranged on the upper surface of the fixed plate, one end of the top spring is fixedly connected with a blocking block, an annular block is fixedly connected to the inner wall of the filter block, the outer wall of the blocking block abuts against the inner wall of the annular block, and a bottom plate is fixedly connected to the inner wall of the shell. According to the engine oil filtering device, engine oil filtering is guided through the check valve and the oil inlet hole, the auxiliary filter screen is arranged outside the magnetic filter layer to improve efficiency, the magnetic filter layer is mainly used for filtering iron particles but is prone to being blocked by other impurities, the auxiliary filter screen is used for filtering other impurities firstly, and then the magnetic filter layer is used for filtering the iron impurities. The service life of the filter is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil filters, and particularly relates to a magnetic oil filter. Background Art

[0002] A magnetic oil filter is a device that uses the principle of magnetic adsorption to remove iron particles in oil. Its main function is to adsorb iron impurities such as metal chips and wear particles, prevent them from causing friction and wear inside the engine, thereby extending the service life of engine components, and maintaining the performance and reliability of the engine. Therefore, using a magnetic oil filter can effectively protect the engine, reduce oil pollution, improve the cleanliness of the oil, and further extend the service life of the entire engine system.

[0003] The magnetic oil filter has the problem of limited service life in use. When the filter layer filters impurities exceeding the bearing capacity, the filter can no longer continue to filter. Moreover, the maintenance cost of the magnetic oil filter is relatively high. Traditional filters usually use physical isolation or chemical adsorption to remove various types of impurities, such as particles and sludge. While the magnetic oil filter mainly targets iron particles and requires regular cleaning of the magnetic adsorbents, which may be relatively more cumbersome. However, traditional filters cannot filter iron particles. Therefore, a magnetic oil filter is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a magnetic oil filter, aiming to solve the problems of short service life and low filtration efficiency of the filter in the prior art.

[0005] To achieve the above purpose, the magnetic oil filter provided by the embodiment of the utility model includes a housing. An auxiliary filter screen is fixedly connected inside the housing. A filter block is arranged inside the housing. Filter holes are formed inside the filter block. A magnetic filter layer is arranged on the outer wall of the filter block. A fixing plate is fixedly connected inside the filter block. A top spring is arranged on the upper surface of the fixing plate. One end of the top spring is fixedly connected with a blocking block. An annular block is fixedly connected to the inner wall of the filter block. The outer wall of the blocking block abuts against the inner wall of the annular block. A bottom plate is fixedly connected to the inner wall of the housing.

[0006] Optionally, an oil outlet hole is formed inside the bottom plate, and a rubber block is fixedly connected to the upper surface of the bottom plate.

[0007] Optionally, a limiting plate is arranged on one side of the outer wall of the rubber block, and a fixing block is fixedly connected inside the limiting plate.

[0008] Optionally, an oil inlet hole is arranged inside the limiting plate, and an annular groove is formed inside the fixing block.

[0009] Optionally, a check valve is arranged on the outer wall of the fixing block.

[0010] Optionally, a convex block is fixedly connected inside the check valve, and the outer wall of the convex block abuts against the inner wall of the annular groove.

[0011] Optionally, internal threads are provided inside the fixing block.

[0012] Optionally, the lower surface of the check valve abuts against the upper surface of the limiting plate.

[0013] One or more of the above technical solutions in the magnetic oil filter provided by the embodiment of the present invention have at least one of the following technical effects:

[0014] 1. In the present invention, the check valve and the oil inlet hole are used to force the oil to pass through a predetermined route, so as to filter the oil. By adding an auxiliary filter screen outside the magnetic filter layer, the filtering efficiency is improved. The magnetic filter layer has an obvious filtering effect on iron particles, but it will be blocked by other impurities, shortening the service life. The oil passes through the auxiliary filter screen to filter out other impurities and then is filtered by the magnetic filter layer to filter out iron impurities, achieving the effect of improving the filtering efficiency.

[0015] 2. In the present invention, by providing an annular groove on the outer wall of the fixing block, the convex block connected to the check valve just fits into the annular groove, preventing the check valve from sliding on the outer wall of the fixing block, and preventing some oil from passing through the oil inlet hole without being filtered and being used, achieving the effect of improving the stability of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a three-dimensional structural diagram of the magnetic oil filter proposed by the present invention;

[0018] Figure 2 is a partial structural schematic diagram of the magnetic filter layer of the magnetic oil filter proposed by the present invention;

[0019] Figure 3 is Figure 2 the enlarged view at A in

[0020] Among them, the reference numerals in the drawings are as follows:

[0021] 1. Outer shell; 2. Auxiliary filter screen; 3. Filter block; 4. Filter holes; 5. Magnetic filter layer; 6. Fixed plate; 7. Top spring; 8. Annular block; 9. Plug block; 10. Bottom plate; 11. Oil outlet hole; 12. Fixed block; 13. Rubber block; 14. Oil inlet hole; 15. Check valve; 16. Annular groove; 17. Protrusion; 18. Internal thread; 19. Limiting plate. Detailed implementation manners

[0022] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as a limitation to the present utility model.

[0023] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0025] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0026] In an embodiment of the present utility model, as Figures 1 to 3As shown in the figure, a magnetic oil filter is provided, including a housing 1. An auxiliary filter screen 2 is fixedly connected inside the housing 1. A filter block 3 is arranged inside the housing 1. Filter holes 4 are formed inside the filter block 3. A magnetic filter layer 5 is arranged on the outer wall of the filter block 3. A fixing plate 6 is fixedly connected inside the filter block 3. A top spring 7 is arranged on the upper surface of the fixing plate 6. One end of the top spring 7 is fixedly connected with a plug block 9. An annular block 8 is fixedly connected to the inner wall of the filter block 3. The outer wall of the plug block 9 abuts against the inner wall of the annular block 8. A bottom plate 10 is fixedly connected to the inner wall of the housing 1.

[0027] Specifically, the oil pressure of the oil causes the check valve 15 to open the passage, so that the oil enters the chamber between the housing 1 and the auxiliary filter screen 2 through the oil inlet hole 14. After the oil is filtered by the auxiliary filter screen 2, it is further filtered by the magnetic filter layer 5 for iron impurities. The magnetic oil filter may be simpler and lower in cost compared to traditional filters, but it may be more cumbersome in cleaning magnetic adsorbents. And because the magnetic oil filter has a better filtering effect on iron particles, it cannot exert the maximum benefit if it is blocked by other impurities. Therefore, setting two filter layers can effectively improve the filtering efficiency and effectively extend the service life of the filter.

[0028] In another embodiment of the present utility model, an oil outlet hole 11 is formed inside the bottom plate 10 of the magnetic oil filter. A rubber block 13 is fixedly connected to the upper surface of the bottom plate 10. A limiting plate 19 is arranged on one side of the outer wall of the rubber block 13. A fixing block 12 is fixedly connected inside the limiting plate 19. An oil inlet hole 14 is arranged inside the limiting plate 19. An annular groove 16 is formed inside the fixing block 12. A check valve 15 is arranged on the outer wall of the fixing block 12. A convex block 17 is fixedly connected inside the check valve 15. The outer wall of the convex block 17 abuts against the inner wall of the annular groove 16. Internal threads 18 are arranged inside the fixing block 12. The lower surface of the check valve 15 abuts against the upper surface of the limiting plate 19.

[0029] Specifically, when the filter layers of the filter are blocked by impurities, a plug block 9 connected by a top spring 7 is arranged inside the filter block 3. When the plug block 9 is under a certain pressure, the sealing state between the plug block 9 and the annular block 8 is released, and the oil can enter the inside of the filter block 3 through the annular block 8 to continue to provide oil lubrication for the vehicle, achieving the effect of improving the practicability of the filter. Then, a convex block 17 is arranged inside the check valve 15 so that the convex block 17 just fits into the annular groove 16 formed on the outer wall of the fixing block 12, achieving the effect of fixing the position of the check valve 15. The internal threads 18 arranged inside the fixing block 12 can facilitate the connection of the filter and improve the installation efficiency.

[0030] Working principle: When the magnetic oil filter needs to be used, the oil enters the inside of the fixed block 12 through the oil outlet hole 11. The pressure forces the check valve 15 to open the passage, so that the oil enters the chamber formed by the auxiliary filter screen 2 and the outer shell 1. The oil passes through the auxiliary filter screen 2, and other impurities are filtered out by the auxiliary filter screen 2. Then it passes through the magnetic filter layer 5, and iron particles are filtered out by the magnetic filter layer 5. It enters the inside of the filter block 3 from the filter holes 4, achieving the effect of efficiently filtering the oil, and avoiding the problem that the magnetic filter layer 5 is quickly blocked by other impurities, resulting in a short service life. The setting of the auxiliary filter screen 2 outside the magnetic filter layer 5 can effectively extend the service life of the filter.

[0031] In addition, the convex block 17 connected to the check valve 15 is stuck inside the annular groove 16, achieving the effect of further increasing the stability of the check valve 15 of the filter and preventing the check valve 15 from sliding on the outer wall of the fixed block 12. When the auxiliary filter screen 2 and the magnetic filter layer 5 are blocked and the oil cannot pass through, the pressure will cause the state between the blocking block 9 and the annular block 8 to no longer be in an abutting and sealing state. Thus, the oil will enter the inside of the filter block 3 from the annular block 8 to ensure the normal supply of the oil. The rubber block 13 connected to the bottom plate 10 abuts against the lower surface of the limiting plate 19 to prevent the oil from entering the filter block 3 without being filtered, achieving the effect of improving the stability of the filter.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A magnetic oil filter, comprising a housing (1), characterized in that: An auxiliary filter screen (2) is fixedly connected to the interior of the shell (1); a filter block (3) is arranged inside the shell (1); a filter hole (4) is provided inside the filter block (3); a magnetic filter layer (5) is arranged on the outer wall of the filter block (3); a fixing plate (6) is fixedly connected to the interior of the filter block (3); a top spring (7) is arranged on the upper surface of the fixing plate (6); a blocking block (9) is fixedly connected to one end of the top spring (7); an annular block (8) is fixedly connected to the inner wall of the filter block (3); the outer wall of the blocking block (9) abuts against the inner wall of the annular block (8); and a bottom plate (10) is fixedly connected to the inner wall of the shell (1).

2. The magnetic oil filter according to claim 1, characterized in that: An oil outlet hole (11) is provided inside the bottom plate (10), and a rubber block (13) is fixedly connected to the upper surface of the bottom plate (10).

3. The magnetic oil filter according to claim 2, characterized in that: A limiting plate (19) is provided on one side of the outer wall of the rubber block (13), and a fixing block (12) is fixedly connected inside the limiting plate (19).

4. The magnetic oil filter according to claim 3, characterized in that: The limiting plate (19) is provided with an oil inlet hole (14) inside, and the fixing block (12) is provided with an annular groove (16) inside.

5. The magnetic oil filter according to claim 4, characterized in that: A check valve (15) is provided on the outer wall of the fixing block (12).

6. The magnetic oil filter according to claim 5, characterized in that: A protrusion (17) is fixedly connected inside the check valve (15), and the outer wall of the protrusion (17) abuts against the inner wall of the annular groove (16).

7. The magnetic oil filter according to claim 6, characterized in that: The fixing block (12) is provided with an internal thread (18) therein.

8. The magnetic oil filter according to claim 6, characterized in that: The lower surface of the check valve (15) abuts against the upper surface of the limit plate (19).

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