Compact engine oil filter

Abstract

The utility model discloses a compact engine oil filter which comprises a shell and a connecting mechanism arranged in the shell, and the connecting mechanism comprises an oil supply assembly, a filter assembly and a bypass assembly. The oil supply assembly comprises an outer sealing ring, a fixing plate, an oil inlet hole and a check valve plate, the filter assembly comprises a central pipe, filter element paper and a compression spring, and the bypass assembly comprises a valve body, filter paper, a valve cover and a return spring damper; when the oil filter works, impurities in dirty engine oil are filtered out through the filter element paper, when the filter element paper is covered with the impurities and blocked, the pressure of the dirty engine oil is larger and larger due to too small backflow, the valve cover is jacked open, the dirty engine oil can flow into the filter paper, the filter paper filters the dirty engine oil, and it is guaranteed that the backflow engine oil is clean; when the filter element paper and the filter paper are blocked, in order to guarantee engine oil supply, the one-way valve is opened, dirty engine oil is supplied into the engine through the one-way valve, and the engine is prevented from being damaged due to engine oil supply interruption.

Description

Technical Field

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

[0002] Engine oil plays a very important role in the normal operation of the engine. It is equivalent to the blood of the engine. All frictional parts inside the engine need engine oil lubrication. If there is a problem with the engine oil, the engine will also be damaged to varying degrees. In addition to the lubrication function, engine oil also has certain heat dissipation capabilities, the ability to clean parts, anti-corrosion capabilities, and sealing capabilities. When engine oil is in a high-temperature, high-pressure engine for a long time, it will continue to mix with harmful substances. Over time, chemical changes will occur, making the engine oil thinner, dirty, and producing sludge. In order to keep the engine oil clean, the oil filter is placed in the lubrication oil circuit, and the particulate impurities are intercepted on the filter element through filtering.

[0003] For example, the application number CN207485496U discloses an oil filter assembly for an engine, including an oil filter seat, an oil cooler and a cylindrical filter cover, wherein a stopper is provided on the edge of the upper surface of the oil filter seat, a hexagonal conical screw plug is provided in the middle area of ​​the upper surface, a bypass valve is installed on the side, and an oil inlet, an oil outlet and an oil return cavity are provided on the other side; the oil cooler is connected and fixed to the oil filter seat through a central screw component, the oil cooler is provided with a cooling oil circuit, the central screw is provided with a central oil circuit and is connected with the oil outlet oil circuit; the cylindrical filter cover is screwed on the lower part of the oil cooler, the upper surface of the cylindrical filter cover is provided with an oil inlet hole, the inner cavity of the filter is provided with a filter element assembly, the filter element assembly is connected to the lower end of the central screw, and the central pipe is connected to the central oil circuit. The utility model realizes the integration of filtering and cooling functions, is suitable for various engines, has a simple and compact structure, is easy to repair and maintain in the future, and has high oil filtering efficiency.

[0004] However, when this type of engine oil filter assembly is used, the filter element will become blocked and fail after working for a long time, or when the engine is cold started, the oil viscosity will be too high, causing the bypass valve in the filter to open, and the unfiltered oil will be directly supplied to the engine, causing damage to the engine. The filter is not compact and is too large, which makes it inconvenient to install and does not meet people's usage needs. Therefore, a compact oil filter is needed. Utility Model Content

[0005] In order to solve the defects of the prior art that after the filter element is blocked, unfiltered oil is directly supplied to the engine, causing damage to the engine, and the filter is not compact and is too large, causing inconvenience in installation, the utility model provides a compact oil filter.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] The utility model discloses a compact oil filter, comprising a shell and a connecting mechanism arranged inside the shell, wherein the connecting mechanism comprises an oil supply component, a filter component and a bypass component;

[0008] The oil supply assembly includes a gland, an outer sealing ring, a fixing plate, an oil inlet hole and a check valve plate. The gland is fixedly installed at the bottom of the shell. The end of the gland away from the shell is sealed with the outer sealing ring, and the end surface of the gland close to the shell is provided with a fixing plate. The fixing plate is provided with an oil inlet hole, and the fixing plate is located inside the shell. The end of the fixing plate away from the gland is provided with a check valve plate.

[0009] The filter assembly comprises an upper end cover, a central tube, filter element paper, a lower end cover and a compression spring, the upper end cover is fixedly mounted on one end of the check valve plate away from the fixed plate, the central tube is welded to one end of the upper end cover away from the check valve plate, the filter element paper is sleeved on the outer wall of the central tube, and the lower end cover is welded to one end of the central tube away from the upper end cover, the compression spring is fixedly mounted on the outer wall of the lower end cover, and the end of the compression spring away from the lower end cover is fixedly mounted on the inner wall of the shell;

[0010] The bypass assembly includes an upper top cover, a valve body, filter paper, a lower top cover, a valve cover and a return spring damper. The upper top cover is arranged inside the central tube, the valve body is fixedly mounted on the lower surface wall of the upper top cover, the filter paper is sleeved on the outer side wall of the valve body, the lower top cover is welded to the end of the filter paper away from the upper top cover, the valve cover is arranged inside the valve body, and the valve body and the valve cover are fixedly connected by a return spring damper.

[0011] As a preferred technical solution of the utility model, the check valve plate is configured to be trumpet-shaped, and the check valve plate is sleeved on the fixed pipe at the bottom of the upper end cover.

[0012] As a preferred technical solution of the utility model, the one-way valve arranged on the lower top cover is located at the center of the filter paper.

[0013] As a preferred technical solution of the utility model, the valve body, the valve cover and the return spring damper are all located inside the filter paper, and the outer diameter of the valve body is smaller than the inner diameter of the filter paper.

[0014] As a preferred technical solution of the utility model, the diameter of the fixing plate is completely the same as the inner diameter of the shell, and the diameters of the check valve plate, the upper end cover and the lower end cover are all smaller than the inner diameter of the shell.

[0015] As a preferred technical solution of the utility model, the diameter of the filter paper is smaller than the inner diameters of the upper end cover and the lower end cover.

[0016] The utility model has the following beneficial effects:

[0017] By setting the valve body, filter paper, valve cover and return spring damping, when working, the dirty engine oil is filtered out of impurities such as dust and wear waste through the filter paper, and the filtered clean engine oil is supplied to the engine through the central tube. The filter paper is supported by the central tube, which is not easy to tip over and is safer. The contact surface of the filter paper is larger and the filtering efficiency is high. When the filter paper is covered with impurities such as dust and wear waste and is seriously blocked, the dirty engine oil will cause increasing pressure due to insufficient reflux, thereby pushing open the valve cover inside the upper valve body. The valve cover is contracted by the return spring damping, and the dirty engine oil can flow into the inside of the filter paper through the through hole on the upper cover. The filter paper filters the dirty engine oil to ensure that the reflux oil is clean, thereby extending the service life of the filter.

[0018] By setting a one-way valve, when both the filter element paper and the filter paper are clogged by impurities, in order to ensure the oil supply, the one-way valve at the center of the lower top cover opens, and the dirty oil is supplied to the engine through the one-way valve, avoiding damage to the engine due to oil supply interruption, extending the service life of the engine, and being safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0020] Figure 1 It is a structural schematic diagram of a compact oil filter of the utility model;

[0021] Figure 2 This is a schematic diagram of a half-section structure of a compact oil filter of the utility model;

[0022] Figure 3 It is a schematic diagram of the exploded structure of a compact oil filter of the utility model;

[0023] Figure 4 It is a schematic diagram of the exploded structure of a compact oil filter oil supply assembly of the utility model;

[0024] Figure 5 It is a half-section structural schematic diagram of a compact oil filter bypass assembly of the utility model;

[0025] Figure 6 The utility model is a schematic diagram of the exploded structure of a compact oil filter bypass component.

[0026] In the figure: 1. outer shell; 2. pressure cover; 3. outer sealing ring; 4. fixing plate; 5. oil inlet hole; 6. check valve plate; 7. upper end cover; 8. center tube; 9. filter element paper; 10. lower end cover; 11. compression spring; 12. upper top cover; 13. valve body; 14. filter paper; 15. lower top cover; 16. valve cover; 17. return spring damping; 18. fixing tube; 19. one-way valve. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] Example 1: Figure 1-6 As shown, a compact oil filter proposed by the utility model comprises a housing 1 and a connecting mechanism arranged inside the housing 1, wherein the connecting mechanism comprises an oil supply assembly, a filter assembly and a bypass assembly;

[0029] The oil supply assembly includes a gland 2, an outer sealing ring 3, a fixing plate 4, an oil inlet hole 5 and a check valve plate 6. The gland 2 is fixedly installed at the bottom of the housing 1. The end of the gland 2 away from the housing 1 is sealed with the outer sealing ring 3, and the end surface of the gland 2 close to the housing 1 is provided with a fixing plate 4, the fixing plate 4 is provided with an oil inlet hole 5, and the fixing plate 4 is located inside the housing 1. The end of the fixing plate 4 away from the gland 2 is provided with a check valve plate 6. When working, the housing 1 is first screwed onto the automobile engine, and the outer sealing ring 3 seals the gland 2 on the housing 1 to prevent the housing 1 from leaking outward. The dirty oil in the automobile engine then flows into the housing 1 through the gland 2. The dirty oil first flows into the inside of the check valve plate 6 through the oil inlet hole 5 on the fixing plate 4. When the dirty oil pressure is large enough, the dirty oil opens the check valve plate 6 and flows into the inside of the housing 1. When the engine stops working, the dirty oil pressure is not enough to open the check valve plate 6. The check valve plate 6 immediately fits against the fixing plate 4 to ensure that the oil inside the housing 1 is not emptied, effectively retain the oil in the cavity, form internal back pressure, and ensure that the lubrication oil supply system is established at the fastest speed when the engine is started next time;

[0030] The filter assembly comprises an upper end cover 7, a central tube 8, a filter element paper 9, a lower end cover 10 and a compression spring 11. The upper end cover 7 is fixedly installed at one end of the check valve plate 6 away from the fixed plate 4, and the central tube 8 is welded at one end of the upper end cover 7 away from the check valve plate 6. The outer wall of the central tube 8 is sleeved with a filter element paper 9, and the lower end cover 10 is welded at one end of the central tube 8 away from the upper end cover 7. A compression spring 11 is fixedly installed on the outer wall of the lower end cover 10, and the end of the compression spring 11 away from the lower end cover 10 is fixedly installed on the inner wall of the shell 1. During operation, the dirty engine oil passes through the filter element paper 9 to filter out impurities such as dust and wear waste, and the filtered clean engine oil passes through the central tube 8 to be supplied to the engine. The filter element paper 9 is supported by the central tube 8, is not easy to tip over and is safer, the filter element paper 9 has a larger contact surface and high filtration efficiency, and the compression spring 11 is conducive to completely squeezing the lower end cover 10 and the upper end cover 7 to fit on the fixed plate 4, so as to ensure that the engine oil can be fully and smoothly discharged.

[0031] Furthermore, the check valve plate 6 is configured to be trumpet-shaped, and the check valve plate 6 is sleeved on the fixed tube 18 at the bottom of the upper end cover 7. During operation, by configuring the check valve plate 6, when the oil pressure is too high, the check valve plate 6 can be lifted up, and the oil can be filtered and cleaned. When the oil pressure is too low, the check valve plate 6 can be closed again to ensure that the oil inside the housing 1 is not drained. The fixed tube 18 limits and fixes the check valve plate 6 to prevent the check valve plate 6 from shaking and falling off, which is safe and reliable.

[0032] Furthermore, the diameter of the fixed plate 4 is exactly the same as the inner diameter of the outer shell 1, and the diameters of the check valve plate 6, the upper end cover 7 and the lower end cover 10 are all smaller than the inner diameter of the outer shell 1. When working, the fixed plate 4 is completely fixed inside the outer shell 1 to ensure that the check valve plate 6 works stably. The diameters of the check valve plate 6, the upper end cover 7 and the lower end cover 10 are smaller than the inner diameter of the outer shell 1, which is convenient for dirty oil to fill the interior of the outer shell 1. The external pressure of the filter paper 9 is greater than the internal pressure, so the effect of automatic filtering of the dirty oil can be achieved.

[0033] Furthermore, the diameter of the filter paper 9 is smaller than the inner diameter of the upper end cover 7 and the lower end cover 10, and the filter paper 9 is located between the upper end cover 7 and the lower end cover 10. The filter paper 9 is supported by the central tube 8, which is not easy to tip over and is safer.

[0034] Example 2: Figure 1-6As shown, a compact oil filter proposed by the utility model, compared with Example 1, as another embodiment of the utility model, the bypass assembly includes an upper top cover 12, a valve body 13, a filter paper 14, a lower top cover 15, a valve cover 16 and a return spring damper 17, the upper top cover 12 is arranged inside the central tube 8, the valve body 13 is fixedly installed on the lower surface wall of the upper top cover 12, the filter paper 14 is sleeved on the outer side wall of the valve body 13, the lower top cover 15 is welded to the end of the filter paper 14 away from the upper top cover 12, and the valve cover is arranged inside the valve body 13. 16. The valve body 13 and the valve cover 16 are fixedly connected by a return spring damper 17. During operation, when the filter paper 9 is covered with impurities such as dust and wear waste and is seriously blocked, the dirty oil will cause increasing pressure due to insufficient reflux, thereby pushing open the valve cover 16 inside the upper valve body 13. The valve cover 16 is contracted by the return spring damper 17, and the dirty oil can flow into the inside of the filter paper 14 through the through hole on the upper cover 12. The filter paper 14 filters the dirty oil to ensure that the reflux oil is clean and extend the service life of the filter.

[0035] Furthermore, the one-way valve 19 provided on the lower top cover 15 is located at the center of the filter paper 14. During operation, when the filter element paper 9 and the filter paper 14 are both blocked by impurities, in order to ensure the supply of engine oil, the one-way valve 19 at the center of the lower top cover 15 is opened, and the dirty engine oil is supplied to the inside of the engine through the one-way valve 19, thereby avoiding damage to the engine due to interruption of the engine oil supply, extending the service life of the engine, and being safer and more reliable.

[0036] Furthermore, the valve body 13, the valve cover 16 and the return spring damper 17 are all located inside the filter paper 14, and the outer diameter of the valve body 13 is smaller than the inner diameter of the filter paper 14. During operation, the dirty oil pushes open the valve cover 16 inside the upper valve body 13 due to excessive pressure, and the valve cover 16 contracts through the return spring damper 17, so that the dirty oil can be filtered through the filter paper 14.

[0037] During operation, the outer shell 1 is first screwed onto the automobile engine, and the outer sealing ring 3 seals the pressure cap 2 on the outer shell 1 to prevent the outer shell 1 from leaking oil outward. Then the dirty oil inside the automobile engine flows into the outer shell 1 through the pressure cap 2, and the dirty oil first flows into the inside of the check valve plate 6 through the oil inlet hole 5 on the fixed plate 4. When the dirty oil pressure is large enough, the dirty oil opens the check valve plate 6 and flows into the inside of the outer shell 1. When the engine stops working, the dirty oil pressure is not enough to open the check valve plate 6, and the check valve plate 6 immediately fits to the fixed plate 4, ensuring that the oil inside the outer shell 1 is not drained, effectively retaining the oil in the cavity, forming internal back pressure, and ensuring that the lubrication oil supply system is established at the fastest speed when the engine is started next time.

[0038] Next, the dirty oil is filtered out of impurities such as dust and wear waste through the filter paper 9, and the filtered clean oil is supplied to the engine through the central tube 8. The filter paper 9 is supported by the central tube 8, which is not easy to tip over and is safer. The filter paper 9 has a larger contact surface and high filtration efficiency. When the filter paper 9 is covered with impurities such as dust and wear waste and is seriously blocked, the dirty oil will cause increasing pressure due to insufficient reflux, thereby pushing open the valve cover 16 inside the upper valve body 13. The valve cover 16 is contracted by the return spring damping 17, and the dirty oil can flow into the inside of the filter paper 14 through the through hole on the upper cover 12. The filter paper 14 filters the dirty oil to ensure that the reflux oil is clean and the service life of the filter is extended.

[0039] Finally, when both the filter paper 9 and the filter paper 14 are clogged by impurities, in order to ensure the oil supply, the one-way valve 19 at the center of the lower top cover 15 is opened, and the dirty oil is supplied to the inside of the engine through the one-way valve 19, avoiding damage to the engine due to interruption of the oil supply, extending the service life of the engine, and being safer and more reliable.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A compact oil filter, comprising a housing (1) and a connecting mechanism arranged inside the housing (1), characterized in that: The connecting mechanism includes an oil supply component, a filter component and a bypass component; The oil supply assembly comprises a gland (2), an outer sealing ring (3), a fixing plate (4), an oil inlet hole (5) and a check valve plate (6); the gland (2) is fixedly mounted on the bottom of the housing (1); the end of the gland (2) away from the housing (1) is sealingly connected to the outer sealing ring (3); a fixing plate (4) is arranged on the end surface of the gland (2) close to the housing (1); the oil inlet hole (5) is formed on the fixing plate (4); the fixing plate (4) is located inside the housing (1); and the end of the fixing plate (4) away from the gland (2) is provided with a check valve plate (6); The filter assembly comprises an upper end cover (7), a central tube (8), filter element paper (9), a lower end cover (10) and a compression spring (11); the upper end cover (7) is fixedly mounted on one end of the check valve plate (6) away from the fixed plate (4); the central tube (8) is welded to one end of the upper end cover (7) away from the check valve plate (6); the filter element paper (9) is sleeved on the outer wall of the central tube (8); the lower end cover (10) is welded to one end of the central tube (8) away from the upper end cover (7); the compression spring (11) is fixedly mounted on the outer wall of the lower end cover (10); and the end of the compression spring (11) away from the lower end cover (10) is fixedly mounted on the inner wall of the housing (1); The bypass assembly comprises an upper cover (12), a valve body (13), filter paper (14), a lower cover (15), a valve cover (16) and a return spring damper (17); the upper cover (12) is arranged inside the central tube (8); the valve body (13) is fixedly mounted on the lower surface wall of the upper cover (12); the filter paper (14) is sleeved on the outer wall of the valve body (13); the lower cover (15) is welded to one end of the filter paper (14) away from the upper cover (12); the valve cover (16) is arranged inside the valve body (13); and the valve body (13) and the valve cover (16) are fixedly connected via the return spring damper (17).

2. A compact oil filter according to claim 1, characterized in that: The check valve plate (6) is configured to be trumpet-shaped, and the check valve plate (6) is sleeved on a fixed pipe (18) at the bottom of the upper end cover (7).

3. A compact oil filter according to claim 1, characterized in that: The one-way valve (19) provided on the lower top cover (15) is located at the center of the filter paper (14).

4. A compact oil filter according to claim 1, characterized in that: The valve body (13), the valve cover (16) and the return spring damper (17) are all located inside the filter paper (14), and the outer diameter of the valve body (13) is smaller than the inner diameter of the filter paper (14).

5. A compact oil filter according to claim 1, characterized in that: The diameter of the fixing plate (4) is completely the same as the inner diameter of the outer shell (1), and the diameters of the check valve plate (6), the upper end cover (7) and the lower end cover (10) are all smaller than the inner diameter of the outer shell (1).

6. A compact oil filter according to claim 1, characterized in that: The diameter of the filter paper (9) is smaller than the inner diameters of the upper end cover (7) and the lower end cover (10).

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