Built-in straight-through type rotary oil filter for oil can

Abstract

The utility model discloses a built-in straight-through type rotary oil filter for an oil can, which relates to the technical field of oil filters and comprises a shell, one end of the shell is open, filter paper is arranged in the shell, an upper end cover and a lower end cover are respectively and fixedly mounted on two sides of the filter paper along the axis direction of the shell, and a support plate is arranged on the inner bottom wall of the shell. The lower end cover is lapped on the supporting plate, a bypass valve is arranged on the lower end cover in the direction facing the axis of the shell, and during cold start or blockage, unfiltered oil ejects a piston of the bypass valve, directly enters the oil outlet channel through the bypass valve and the oil discharge hole, flows out of the oil outlet window at the bottom of the shell and enters an oil outlet cavity of the oil can, and it is guaranteed that oil exists in the oil channel all the time; the power-assisted steering function is prevented from being damaged, and the technical problem that engine oil cannot be effectively transmitted to all parts of an engine due to the fact that large pressure difference is generated due to the fact that the viscosity of oil is too large or the pollution degree of filter materials is high is solved.

Description

Technical Field

[0001] This utility model relates to the field of oil filter technology, specifically a built-in straight-through spin-on oil filter for an oil reservoir. Background Technology

[0002] The function of an oil filter is to filter out metal shavings, atmospheric dust, and carbon particles produced by incomplete combustion of fuel from the circulating engine oil before it reaches the surfaces of moving parts. Traditional spin-on oil filters are directly connected to the engine block via threads and are widely used in the automotive industry due to their ease of use and installation.

[0003] In existing technology, engine oil is pumped from the engine's oil pump to the filter. The oil enters the filter screen through the filter's inlet; the filter screen is typically made of fibrous material with fine pores. As the oil passes through the filter screen, impurities such as metal shavings and dust are trapped, preventing them from entering the engine. The clean oil, after being filtered, flows out through the filter's outlet and returns to the engine for lubrication and cooling. However, the following problems exist:

[0004] Over time, excessively high oil viscosity or high levels of filter contamination can create a large pressure differential, resulting in high oil flow resistance. This prevents the oil from being effectively delivered to various parts of the engine, leading to poor oil circulation, reduced engine lubrication, increased engine friction, and accelerated wear. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a built-in straight-through spin-on oil filter for an oil reservoir. This built-in straight-through spin-on oil filter solves the problem that excessive oil viscosity or high degree of filter media contamination can cause a large pressure difference, resulting in the oil not being effectively delivered to various parts of the engine.

[0006] To achieve the above objectives, an embodiment of this utility model proposes a built-in straight-through spin-on oil filter for an oil reservoir, comprising a housing, one end of which is open, and filter paper disposed inside the housing. An upper end cap and a lower end cap are fixedly mounted on both sides of the filter paper along the axial direction of the housing. A support plate is disposed on the inner bottom wall of the housing, and the lower end cap rests on the support plate. A bypass valve is disposed on the lower end cap facing the axial direction of the housing. The bypass valve comprises a valve body and a piston that are slidably connected to each other. A spring is disposed between the bottom end of the valve body and the piston. An oil drain hole is opened on the side wall of the valve body, and an oil outlet window is opened at the bottom end of the housing. A plurality of first oblong holes are evenly distributed on the end of the support plate away from the axial direction of the housing.

[0007] Preferably, an outer protective tube is provided between the upper end cover and the lower end cover, the outer protective tube being located outside the filter paper and having permeability.

[0008] Preferably, a circular groove is provided at the top of the valve body, and the inner edge of the lower end cap is inserted into the circular groove of the valve body.

[0009] Preferably, the bottom end of the valve body is bent inward.

[0010] Preferably, the oil drain hole is teardrop-shaped.

[0011] Preferably, the support plate has a support portion at one end facing the axis of the outer shell. The support portion is arc-shaped and is adapted to the lower end cover.

[0012] Preferably, a second waist-shaped hole is provided between two adjacent first waist-shaped holes.

[0013] Preferably, the open end of the housing is provided with a threaded cover plate, and the threaded cover plate sub-assembly is provided with a vertically penetrating threaded through hole in the middle.

[0014] Preferably, a sealing ring is provided at the outer edge of the threaded cover plate.

[0015] Preferably, a sealing gasket is provided on the side of the upper end cover away from the filter paper, and the sealing gasket is in contact with the side wall of the threaded cover plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By setting up filter paper and a bypass valve, the filter paper filters the engine oil, and the bypass valve protects the filter. When there is a cold start or blockage, the unfiltered oil pushes open the piston of the bypass valve and enters the oil outlet channel directly through the bypass valve and the drain hole. It then flows out from the oil outlet window at the bottom of the housing and into the oil reservoir's outlet chamber, ensuring that there is always oil in the oil passage and preventing damage to the power steering function. At the same time, oil enters through the center screw hole of the threaded cover plate and exits directly from the oil outlet window at the bottom of the housing. The oil flow does not need to be reversed, and the oil flow resistance is small.

[0018] By setting up a support plate with a first and a second oblong hole on its outer side, the elasticity of the outer end of the support plate is increased, providing support for the entire upper end cover, filter paper and lower end cover. At the same time, it facilitates the flow of filtered oil from the gap between the filter paper and the outer shell to the oil outlet window, and then discharges through the oil outlet window. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the present invention;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 This is a structural diagram of the bypass valve of this utility model;

[0022] Figure 4 This is a structural diagram of the outer shell of this utility model;

[0023] Figure 5 This is a structural diagram of the support plate of this utility model.

[0024] The labels in the diagram represent: 1. Outer shell; 2. Sealing ring; 3. Threaded cover plate; 4. Sealing gasket; 5. Upper end cover; 6. Filter paper; 7. Outer protective tube; 8. Lower end cover; 9. Valve body; 10. Piston; 11. Spring; 12. Support plate; 13. Oil outlet window; 14. Oil drain hole; 15. Support part; 16. First oblong hole; 17. Second oblong hole. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figures 1-4As shown, an internal straight-through spin-on oil filter for an oil reservoir includes a housing 1, one end of which is open. Filter paper 6 is installed inside the housing 1 to filter the oil. An upper end cap 5 and a lower end cap 8 are fixedly installed on both sides of the filter paper 6 along the axial direction of the housing 1. An outer protective tube 7 is provided between the upper end cap 5 and the lower end cap 8, located outside the filter paper 6 and having permeability. A support plate 12 is provided on the inner bottom wall of the housing 1. The lower end cap 8 rests on one side of the support plate 12. A bypass valve is provided on the lower end cap 8 facing the axial direction of the housing 1. When a large pressure difference occurs in the oil inside the housing 1, the bypass valve is used to promptly discharge the oil from the housing 1. The bypass valve includes a valve body 9 and a piston 10 that are slidably connected to each other. The lower end cap 8 is inclined towards the axial direction of the housing 1 and fixed to the valve body 9. A circular groove is provided at the top of the valve body 9. The inner edge of the piston is inserted into the circular groove of the valve body 9. The bottom end of the valve body 9 is bent inward, and a spring 11 is provided between it and the piston 10. The spring 11 drives the piston 10 to move towards the top of the valve body 9 through its own elastic force. The side wall of the valve body 9 is provided with an oil drain hole 14, which is used to block the oil from flowing out of the bypass valve when the filter paper 6 is filtering normally. The oil drain hole 14 is teardrop-shaped. When the pressure difference in the housing 1 is large, the piston 10 moves to the bottom end of the oil drain hole 14. At this time, the oil drain hole is large. When the pressure difference in the housing 1 is small, the piston 10 is located at the top end of the oil drain hole 14. At this time, the oil drain hole is relatively small. This serves to relieve pressure and ensure that the oil flows out after being filtered by the filter paper 6 as much as possible. The bottom end of the housing 1 is provided with an oil outlet window 13. There are several oil outlet windows 13, which are evenly distributed about the axis of the housing 1. Preferably, there are fourteen oil outlet windows 13. The oil outlet windows 13 are used to drain the oil.

[0027] As one implementation method in this embodiment, such as Figure 2 and Figure 5As shown, a support portion 15 is provided at one end of the support plate 12 facing the axis of the outer shell 1. The support portion 15 is arc-shaped and is adapted to the lower end cover 8. The arc-shaped part of the lower end cover 8 rests on the support portion 15 for easy installation. A plurality of first oblong holes 16 are evenly provided at the end of the support plate 12 away from the axis of the outer shell 1. The first oblong holes 16 are used to reduce the weight of the support plate 12 and increase the elasticity of the support plate 12. A second oblong hole 17 is provided between two adjacent first oblong holes 16. The second oblong holes 17 further increase the elasticity of the support plate 12. The outer end has elastic force, which facilitates the flow of filtered oil to the bottom of the outer casing 1 and discharges it through the oil outlet window 13; the open end of the outer casing 1 is provided with a threaded cover plate 3, and the threaded cover plate 3 is provided with a vertical threaded through hole in the middle of the assembly. The threaded through hole is used to draw in oil. A sealing ring 2 is provided at the outer edge of the threaded cover plate 3. The sealing ring 2 is used to seal the interface and prevent oil leakage. A sealing gasket 4 is provided on the side of the upper cover 5 away from the filter paper 6. The sealing gasket 4 contacts the side wall of the threaded cover plate 3 and seals the threaded through hole.

[0028] As one implementation method in this embodiment, such as Figure 1 and Figure 2 As shown, the bottom of the outer casing 1 is provided with a mounting surface (not shown in the figure) to facilitate user installation and maintenance.

[0029] The working principle of this utility model is as follows: When in use, the support plate 12 and the bypass valve are placed inside the outer shell 1, and then fixed to the open end of the outer shell 1 by the threaded cover plate 3, which can complete the assembly. The installation is convenient. When working, the filter is placed inside the oil can and immersed in the steering fluid.

[0030] When oil filtration is performed, during normal operation, the unfiltered oil enters the interior of the housing 1 through the central oil hole on the threaded cover plate 3 of this filter. Impurity particles are blocked and sink by the micropores of the filter paper 6. The filtered clean oil passes through the outer protective tube 7 to the gap between the outer periphery of the filter paper 6 and the housing 1, and then flows out from the oil outlet window 13 at the bottom of the housing 1 into the oil outlet chamber of the oil can, thus achieving the filtration of the oil.

[0031] When cold-started or blocked, a large pressure difference is generated due to excessive oil viscosity or high degree of filter media contamination. The unfiltered oil pushes open the piston 10 of the bypass valve and enters the oil outlet channel directly through the bypass valve and the drain hole 14. It flows out from the oil outlet window 13 at the bottom of the housing 1 and enters the oil outlet chamber of the oil reservoir, ensuring that there is always oil in the oil passage and avoiding damage to the power steering function.

[0032] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. An in-line spin-on oil filter for oil cans, characterized by comprising: include: The outer shell (1) has one open end. Filter paper (6) is provided inside the outer shell (1). An upper end cover (5) and a lower end cover (8) are fixedly installed on both sides of the filter paper (6) along the axial direction of the outer shell (1). A support plate (12) is provided on the inner bottom wall of the outer shell (1). The lower end cover (8) rests on the support plate (12). A bypass valve is provided on the lower end cover (8) in the direction of the axial direction of the outer shell (1). The bypass valve includes a valve body (9) and a piston (10) that are slidably connected to each other. A spring (11) is provided between the bottom end of the valve body (9) and the piston (10). An oil drain hole (14) is provided on the side wall of the valve body (9). An oil outlet window (13) is provided at the bottom end of the outer shell (1). A plurality of first waist-shaped holes (16) are evenly provided at the end of the support plate (12) away from the axis of the outer shell (1).

2. The built-in pass-through spin-on oil filter for oil can according to claim 1, characterized in that, An outer protective tube (7) is provided between the upper end cover (5) and the lower end cover (8). The outer protective tube (7) is located outside the filter paper (6) and is permeable.

3. The built-in pass-through spin-on oil filter for oil can according to claim 1, characterized in that, The valve body (9) has a circular groove at its top, and the inner edge of the lower end cap (8) is inserted into the circular groove of the valve body (9).

4. The built-in pass-through spin-on oil filter for oil can according to claim 1, characterized in that, The bottom end of the valve body (9) is bent inward.

5. The built-in pass-through spin-on oil filter for oil can according to claim 1, characterized in that, The oil drain hole (14) is teardrop-shaped.

6. The built-in pass-through spin-on oil filter for oil jugs of claim 1, wherein, The support plate (12) has a support part (15) at one end facing the axis of the outer shell (1). The support part (15) is arc-shaped and is adapted to the lower end cover (8).

7. The built-in pass-through spin-on oil filter for oil jugs of claim 1, wherein, A second waist-shaped hole (17) is provided between two adjacent first waist-shaped holes (16).

8. The built-in pass-through spin-on oil filter for oil jugs of claim 1, wherein, The outer casing (1) has a threaded cover plate (3) at one open end, and the threaded cover plate (3) has a threaded through hole in the middle of the assembly.

9. The built-in pass-through spin-on oil filter for oil cans according to claim 8, characterized in that, A sealing ring (2) is provided at the outer edge of the threaded cover plate (3).

10. The built-in pass-through spin-on oil filter for oil cans according to claim 8, characterized in that, A sealing gasket (4) is provided on the side of the upper end cover (5) away from the filter paper (6), and the sealing gasket (4) is in contact with the side wall of the threaded cover plate (3).

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