A one-way straight-through filter

Abstract

This utility model belongs to the field of lubrication technology, specifically disclosing a one-way straight-through filter, including: a straight-through filter housing, a filter cap, and a one-way filter element. The straight-through filter housing is hollow and open at the top. A filter cap is detachably connected to the upper opening of the straight-through filter housing. A one-way filter element is disposed at the bottom of the filter cap. A valve chamber is disposed at the bottom of the inner cavity of the one-way filter element. The internal diameter of the valve chamber is smaller at both ends than in the middle. A steel ball is disposed in the inner cavity of the valve chamber, and a spring is connected to the bottom of the steel ball. By designing the one-way filter element as a long cylindrical shape, the contact area between the lubricating oil and the one-way filter element is large, minimizing the impact on the flow of lubricating oil and ensuring the stability of the lubricating oil flow rate. Through the coordinated use of the spring, steel ball, and valve chamber, a portion of the returning lubricating oil is pressed down on the steel ball and flows down from the valve chamber, thus ensuring the return speed of the lubricating oil.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, specifically a one-way straight-through filter. Background Technology

[0002] Lubrication is an important aspect of tribology research. It involves technical measures to improve the frictional state of friction pairs to reduce frictional resistance and slow down wear.

[0003] Lubricating oil is often used for lubrication of mechanical parts with relative motion, such as volumetric lubrication devices. These devices require periodic inflow and outflow of lubricating oil, which usually contains impurities that need to be filtered. Traditional filtration structures typically involve adding a filter screen to the lubricating oil pipeline, but this has a limited filtration area and affects the flow rate of the lubricating oil. Utility Model Content

[0004] The purpose of this invention is to provide a one-way straight-through filter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a unidirectional straight-through filter, comprising:

[0006] Straight-through oil filter housing, filter cap, one-way filter element;

[0007] The straight-through oil filter housing is hollow and open at the top. A filter cap is detachably connected to the upper opening of the straight-through oil filter housing. A one-way filter element is installed at the bottom of the filter cap. A valve chamber is installed at the bottom of the inner cavity of the one-way filter element. The internal diameter of the valve chamber is smaller at both ends than in the middle. A steel ball is installed in the inner cavity of the valve chamber. A spring is connected to the bottom of the steel ball. The bottom end of the spring is connected to the bottom of the inner cavity of the valve chamber. The diameter of the steel ball is larger than the diameter at both ends of the valve chamber but smaller than the diameter in the middle section of the valve chamber. The bottom end of the valve chamber is connected to the lower part of the inner cavity of the straight-through oil filter housing, and there is a space between the bottom end of the valve chamber and the lower part of the inner cavity of the straight-through oil filter housing. An oil inlet is opened at the bottom end of the straight-through oil filter housing, and an oil outlet is opened on the filter cap.

[0008] Preferably, a support member is inserted into the bottom end of the filter cap. The support member is hollow, and the oil outlet, the support member, the inner cavity of the direct-flow filter housing, and the oil inlet are connected.

[0009] Preferably, sealing rings are embedded at the connection between the straight-through filter housing and the filter cap, and at the connection between the filter cap and the support.

[0010] Preferably, a support ring is embedded in the lower side of the outer wall of the valve cavity, and a bracket for supporting the support ring is provided on the lower side of the inner cavity of the straight-through oil filter housing.

[0011] Preferably, the housing and filter cap of the straight-through oil filter are made of stainless steel or copper.

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

[0013] By designing the one-way filter element as a long cylindrical shape, the contact area between the lubricating oil and the one-way filter element is larger, which has less impact on the flow of the lubricating oil and ensures the stability of the lubricating oil flow rate.

[0014] By using the spring, steel ball, and valve cavity in combination, a portion of the returning lubricating oil is forced down onto the steel ball and flows out of the valve cavity, thus ensuring the return speed of the lubricating oil. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This utility model Figure 1 A front view structural diagram;

[0017] Figure 3 This utility model Figure 2 A schematic diagram of the AA cross-sectional structure.

[0018] In the diagram: 1. Straight-through oil filter housing; 2. Filter cap; 3. Oil outlet; 4. Sealing ring; 5. One-way filter element; 6. Valve chamber; 7. Spring; 8. Steel ball; 9. Support ring; 10. Oil inlet; 11. Support component. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Example 1:

[0022] Please see Figure 1-3 This utility model provides a technical solution: a one-way straight-through filter, comprising: a straight-through filter housing 1, a filter cap 2, and a one-way filter element 5;

[0023] The straight-through oil filter housing 1 is hollow and open at the top. A filter cap 2 is detachably connected to the upper opening of the straight-through oil filter housing 1. A one-way filter element 5 is provided at the bottom of the filter cap 2. A valve chamber 6 is provided at the bottom of the inner cavity of the one-way filter element 5. The internal diameter of the valve chamber 6 is smaller at both ends than in the middle. A steel ball 8 is provided in the inner cavity of the valve chamber 6. A spring 7 is connected to the bottom of the steel ball 8. The bottom end of the spring 7 is connected to the bottom of the inner cavity of the valve chamber 6. The diameter of the steel ball 8 is larger than the diameter at both ends of the valve chamber 6 and smaller than the diameter of the middle section of the valve chamber 6. The bottom end of the valve chamber 6 is connected to the lower part of the inner cavity of the straight-through oil filter housing 1, and there is a space between the bottom end of the valve chamber 6 and the lower part of the inner cavity of the straight-through oil filter housing 1. An oil inlet 10 is provided at the bottom end of the straight-through oil filter housing 1, and an oil outlet 3 is provided on the filter cap 2.

[0024] Analysis of the above content: In use, the oil inlet 10 is connected to the outlet of the lubricating oil power pump, and the oil outlet 3 is connected to the part that needs lubrication through a pipe. The lubricating oil enters the straight-through filter housing 1 from the oil inlet 10, then passes through the one-way filter element 5 for filtration, and then enters the oil outlet 3 and is output to the part that needs lubrication.

[0025] When the lubricating oil flows back, it flows back into the one-way filter element 5 through the oil outlet 3. Due to the high pressure of the lubricating oil, the high-pressure lubricating oil pushes the steel ball 8 to the right, causing the spring 7 to be compressed. A portion of the lubricating oil enters the straight-through filter housing 1 from the valve chamber 6 and then flows back from the oil inlet 10.

[0026] Example 2:

[0027] Please see Figure 1-3 This utility model provides a technical solution based on Embodiment 1: a support member 11 is inserted into the bottom end of the filter cap 2. The support member 11 is hollow, and the oil outlet 3, the support member 11, the inner cavity of the straight-through oil filter housing 1, and the oil inlet 10 are connected. Sealing rings 4 are embedded at the connection between the straight-through oil filter housing 1 and the filter cap 2, and at the connection between the filter cap 2 and the support member 11.

[0028] Analysis of the above content: The support member 11 is used to support and clamp the one-way filter element 5, prevent the one-way filter element 5 from loosening, and position the one-way filter element 5. Through the setting of the sealing ring 4, it can seal the connection between the straight-through oil filter housing 1 and the filter cap 2, and the connection between the filter cap 2 and the support member 11.

[0029] Example 3:

[0030] Please see Figure 1-3 Based on Embodiment 1, this utility model provides a technical solution: a support ring 9 is embedded in the lower side of the outer wall of the valve cavity 6, and a bracket for supporting the support ring 9 is provided on the lower side of the inner cavity of the straight-through oil filter housing 1.

[0031] Analysis of the above content: The support ring 9 is a circular plate, which is fixedly embedded in the outer wall of the valve body cavity 6. The support ring 9 and the valve body cavity 6 on it are supported by the bracket, without affecting the flow of lubricating oil.

[0032] Example 4:

[0033] Please see Figure 1-3 Based on Embodiment 1, this utility model provides a technical solution: the outer shell 1 and filter cap 2 of the straight-through oil filter are both made of stainless steel or copper.

[0034] Analysis of the above: Stainless steel or copper materials have better structural strength and higher weather resistance.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A unidirectional straight-through filter, characterized in that, include: Straight-through oil filter housing (1), filter cap (2), one-way filter element (5); The straight-through oil filter housing (1) is hollow and open at the top. A filter cap (2) is detachably connected to the upper opening of the straight-through oil filter housing (1). A one-way filter element (5) is provided at the bottom of the filter cap (2). A valve chamber (6) is provided at the bottom of the inner cavity of the one-way filter element (5). The internal diameter of the valve chamber (6) is smaller at both ends than in the middle. A steel ball (8) is provided in the inner cavity of the valve chamber (6). A spring (7) is connected to the bottom of the steel ball (8). The bottom end of the spring (7) is connected to the bottom of the inner cavity of the valve cavity (6). The diameter of the steel ball (8) is larger than the diameter of the two ends inside the valve cavity (6) and smaller than the diameter of the middle section inside the valve cavity (6). The bottom end of the valve cavity (6) is connected to the lower part of the inner cavity of the straight-through oil filter housing (1). There is a space between the bottom end of the valve cavity (6) and the lower part of the inner cavity of the straight-through oil filter housing (1). The bottom end of the straight-through oil filter housing (1) is provided with an oil inlet (10). The filter cap (2) is provided with an oil outlet (3).

2. The unidirectional straight-through filter according to claim 1, characterized in that: The bottom end of the filter cap (2) is connected to a support member (11), which is hollow. The oil outlet (3), the support member (11), the inner cavity of the direct-flow filter housing (1), and the oil inlet (10) are connected.

3. A unidirectional straight-through filter according to claim 2, characterized in that: Sealing rings (4) are embedded at the connection between the straight-through filter housing (1) and the filter cap (2), and at the connection between the filter cap (2) and the support (11).

4. A unidirectional straight-through filter according to claim 1, characterized in that: A support ring (9) is embedded in the lower side of the outer wall of the valve cavity (6), and a bracket for supporting the support ring (9) is provided on the lower side of the inner cavity of the straight-through filter housing (1).

5. A unidirectional straight-through filter according to claim 1, characterized in that: The outer shell (1) and filter cap (2) of the straight-through oil filter are both made of stainless steel or copper.

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