Device capable of sucking waste oil in bearing

By designing a device that can suck up waste oil from bearings, the pressure of the lubrication system pushes the valve core and check valve to form a vacuum suction, automatically discharging the waste grease from the bearings, thus solving the problem of bearings not being able to be lubricated and improving the service life of the bearings.

CN223826046UActive Publication Date: 2026-01-23SHANGHAI YINA MASCH TECH CO LTD
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Patent Information

Application Number
CN202520697215.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-14
Publication Date
2026-01-23
Estimated Expiration
2035-04-14

AI Technical Summary

Technical Problem

In centralized automatic lubrication systems, waste grease inside bearings cannot be discharged autonomously, preventing the injection of new grease and resulting in ineffective lubrication of the bearings, which in turn leads to damage.

Method used

Design a device that can suck up waste oil from bearings. The device is connected to a pressure port through the main pipeline of the lubrication system. The pressure pushes the valve core and check valve to form a vacuum suction force, which automatically sucks out the waste grease from the bearing, ensuring that new grease can be injected and effectively lubricate it.

Benefits of technology

It enables the automatic discharge of waste oil from the bearing, ensuring the normal operation of the lubrication system and improving the service life of the bearing.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223826046U_ABST
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Abstract

The utility model discloses a device capable of sucking waste oil in a bearing, which comprises a main structural member, and a pressurizing structural member is fixedly mounted at the right end of the main structural member. The pressure in the lubricating pipeline is increased, so that the valve element is pushed, the valve element pushes the one-way valve and is opened accordingly, a medium in a volume cavity between the valve element and the one-way valve enters a cavity of the one-way valve, meanwhile, the medium in the one-way valve is pushed to push the steel ball and be discharged from the oil outlet, and at the moment, the pressure in the lubricating pipeline is relieved; the valve element is reset due to the acting force of the compression spring, the steel ball and the one-way valve lose thrust and are also reset through the first one-way valve spring and the second one-way valve spring at the same time, and at the moment of resetting, the waste grease in the bearing is sucked into a volume cavity between the one-way valve and the valve element due to vacuum formed in a cavity between the one-way valve and the valve element and suction force generated by the oil suction port. And the function of automatically sucking waste grease in the bearing is achieved through reciprocating circulation, so that the bearing can be effectively lubricated, and the service life of the bearing is prolonged.
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Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to a device for absorbing waste oil from inside bearings. Background Technology

[0002] Bearings are key components in mechanical systems used to reduce friction between moving parts and support rotational or linear loads. They achieve efficient motion through rolling elements (such as balls and rollers) or lubricating films (such as oil and graphite). They are mainly divided into rolling bearings (such as deep groove ball bearings and tapered roller bearings) and sliding bearings (such as bushings and oil film bearings), suitable for high-speed precision or low-speed heavy-load applications, respectively. Their core functions include reducing energy consumption, improving motion accuracy, and extending equipment life. They are widely used in the automotive, aerospace, and industrial equipment industries, and are considered the "core joint" of mechanical design.

[0003] When a centralized automatic lubrication system adds grease to a bearing, the grease is so thick that the waste grease that was originally left inside the bearing cannot be expelled on its own. When the waste grease cannot be expelled from the bearing, new grease cannot be injected, which will result in the bearing not being effectively lubricated and causing the bearing to be damaged. Utility Model Content

[0004] The main purpose of this invention is to provide a device for absorbing waste oil from bearings, which can effectively solve the problems in the background art.

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

[0006] A device for absorbing waste oil from bearings includes a main structural component. A pressure-applying structural component is fixedly installed at the right end of the main structural component. A second fastener and a second seal are respectively inserted and fixedly installed at the right end of the pressure-applying structural component. A small structural component is fixedly installed at the left end of the pressure-applying structural component. A valve core sealing section is inserted and installed at the left end of the small structural component. A first seal and a fourth seal are installed on the outer surface of the valve core sealing section. A pressure port is opened at the lower end of the pressure-applying structural component. A fixing block is installed at the left end of the valve core sealing section. A valve core and a compression spring are respectively fixedly installed at the left end of the fixing block. A first fastener is fixedly installed at both the upper and lower ends of the main structural component. The fastener has a No. 3 sealing element and a one-way valve fixedly installed on the left end of the valve core. A No. 2 one-way valve spring is inserted and fixedly installed on the left end of the one-way valve. An oil suction port is opened at the lower end of the main structural component. An inner structural component is fixedly installed inside the main structural component. The one-way valve and valve core are inserted and installed inside the inner structural component. A No. 3 fastener is inserted and installed on the outer surface of the inner structural component. An oil outlet block is fixedly installed on the left end of the main structural component. An oil discharge port is opened at the upper end of the oil outlet block. A No. 4 fastener is fixedly installed on the left end of the oil outlet block. A No. 1 one-way valve spring is fixedly installed on the right end of the No. 4 fastener. A steel ball is fixedly installed on the right end of the No. 1 one-way valve spring.

[0007] The lubrication system is connected to the pressurization port via its main pipeline. When the automatic centralized lubrication system is working, the pressure in the lubrication pipeline increases, which in turn pushes the valve core. The valve core pushes the check valve and opens it, allowing the medium in the volume chamber between the valve core and the check valve to enter the check valve chamber. At the same time, the medium in the check valve pushes the steel ball, and the medium is discharged from the drain port. At this time, the pressure in the lubrication pipeline is released, and the valve core resets due to the force of the compression spring. The steel ball and the check valve, having lost their thrust, also reset simultaneously through the first and second check valve springs. At the moment of reset, a vacuum is formed in the chamber between the check valve and the valve core, and the suction port generates suction, drawing waste grease from the bearing into the volume chamber between the check valve and the valve core. This allows the bearing to be effectively lubricated, improving its service life.

[0008] Preferably, the second fastener is located on the right side of the second seal.

[0009] Preferably, the valve core is inserted and installed inside the compression spring.

[0010] Preferably, the steel ball is positioned to correspond left and right to the one-way valve.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The main pipeline of the lubrication system is connected to the pressurization port. When the automatic centralized lubrication system is working, the pressure in the lubrication pipeline increases, which pushes the valve core. The valve core pushes the check valve and opens it, allowing the medium in the volume chamber between the valve core and the check valve to enter the chamber of the check valve. At the same time, the medium in the check valve pushes the steel ball, and the medium is discharged from the oil drain port. At this time, the pressure in the lubrication pipeline is released, and the valve core resets due to the force of the compression spring. The steel ball and the check valve also reset simultaneously due to the loss of thrust, through the first and second check valve springs. At the moment of reset, a vacuum is formed in the chamber between the check valve and the valve core, and the oil suction port generates suction, drawing the waste grease in the bearing into the volume chamber between the check valve and the valve core. This cycle repeats to achieve the function of automatically suctioning waste grease from the bearing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a device for absorbing waste oil from bearings according to this utility model.

[0014] In the diagram: 1. Internal structural component; 2. Check valve; 3. Oil outlet block; 4. Valve core; 5. Fixing block; 6. Main structural component; 8. Small structural component; 9. Valve core sealing section; 10. Pressurizing structural component; 11. Compression spring; 12. Check valve spring (number 1); 13. Check valve spring (number 2); 14. Fastener (number 1); 15. Fastener (number 2); 16. Fastener (number 3); 17. Seal (number 1); 18. Seal (number 2); 19. Seal (number 3); 20. Steel ball; 21. Fastener (number 4); 22. Seal (number 4); 23. Oil suction port; 24. Oil discharge port; 25. Pressurizing port. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] like Figure 1As shown, a device for absorbing waste oil from bearings includes a main structural component 6. A pressure-pressurizing structural component 10 is fixedly installed on the right end of the main structural component 6. A second fastener 15 and a second seal 18 are respectively inserted and fixedly installed on the right end of the pressure-pressurizing structural component 10. A small structural component 8 is fixedly installed on the left end of the pressure-pressurizing structural component 10. A valve core sealing section 9 is inserted and installed on the left end of the small structural component 8. A first seal 17 and a fourth seal 22 are installed on the outer surface of the valve core sealing section 9. A pressure port 25 is opened at the lower end of the pressure-pressurizing structural component 10. A fixing block 5 is installed on the left end of the valve core sealing section 9. A valve core 4 and a compression spring 11 are respectively fixedly installed on the left end of the fixing block 5. A first fastener 14 is fixedly installed on both the upper and lower ends of the main structural component 6. A third seal 19 and a one-way valve core 4 are fixedly installed on the left end of the valve core 4. Valve 2, a second check valve spring 13 is fixedly installed on the left end of the one-way valve 2. The lower end of the main structural component 6 has an oil suction port 23. The inner structural component 1 is fixedly installed inside the main structural component 6. The one-way valve 2 and the valve core 4 are inserted and installed inside the inner structural component 1. The third fastener 16 is inserted and installed on the outer surface of the inner structural component 1. The oil outlet block 3 is fixedly installed on the left end of the main structural component 6. The oil outlet block 3 has an oil discharge port 24 at the upper end. The fourth fastener 21 is fixedly installed on the left end of the oil outlet block 3. The first check valve spring 12 is fixedly installed on the right end of the fourth fastener 21. The first check valve spring 12 has a steel ball 20 fixedly installed on the right end. The second fastener 15 is located on the right side of the second seal 18. The valve core 4 is inserted and installed inside the compression spring 11. The steel ball 20 corresponds to the position of the one-way valve 2.

[0019] The lubrication system is connected to the pressure port 25 via the main pipeline. When the automatic centralized lubrication system is working, the pressure in the lubrication pipeline increases, which pushes the valve core 4. The valve core 4 pushes the check valve 2 and opens it, allowing the medium in the volume chamber between the valve core 4 and the check valve 2 to enter the chamber of the check valve 2. At the same time, the medium in the check valve 2 pushes the steel ball 20, and the medium is discharged from the oil drain port 24. At this time, the pressure in the lubrication pipeline is released, and the valve core 4 resets due to the force of the compression spring 11. The steel ball 20 and the check valve 2, having lost their thrust, also reset simultaneously through the first check valve spring 12 and the second check valve spring 13. At the moment of reset, a vacuum is formed in the chamber between the check valve 2 and the valve core 4, and the oil suction port 23 generates suction, drawing the waste grease in the bearing into the volume chamber between the check valve 2 and the valve core 4, thereby enabling the bearing to be effectively lubricated and improving the bearing's service life.

[0020] It should be noted that this utility model is a device for absorbing waste oil from bearings. It is connected to the pressure port 25 via the main pipeline of the lubrication system. When the automatic centralized lubrication system is working, the pressure in the lubrication pipeline increases (the automatic centralized lubrication system is existing technology and not covered in this patent, therefore it is not described in detail here), thereby pushing the valve core 4. The valve core 4 pushes the check valve 2 and opens it, allowing the medium (grease or air, initially air) in the cavity between the valve core 4 and the check valve 2 to enter the chamber of the check valve 2. Simultaneously, it pushes the medium (grease or air) in the check valve 2, initially pushing the steel ball 20. The medium (grease or air, air when first pushed) is discharged from the oil drain port 24. At this time, the pressure in the lubrication pipeline is released, and the valve core 4 is reset due to the force of the compression spring 11. The steel ball 20 and the one-way valve 2 are also reset simultaneously through the first one-way valve spring 12 and the second one-way valve spring 13 because they lose the thrust. At the moment of reset, a vacuum is formed in the chamber between the one-way valve 2 and the valve core 4, and the oil suction port 23 generates suction, which draws the waste grease in the bearing into the volume chamber between the one-way valve 2 and the valve core 4. This cycle repeats to achieve the function of automatically drawing the waste grease in the bearing, thereby enabling the bearing to be effectively lubricated and improving the service life of the bearing.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for absorbing waste oil from bearings, comprising a main structural component (6), characterized in that: A pressure-pressurizing component (10) is fixedly installed on the right end of the main structural component (6). A second fastener (15) and a second seal (18) are respectively inserted and fixedly installed on the right end of the pressure-pressurizing component (10). A small structural component (8) is fixedly installed on the left end of the pressure-pressurizing component (10). A valve core sealing section (9) is inserted and installed on the left end of the small structural component (8). A first seal (17) and a fourth seal (22) are installed on the outer surface of the valve core sealing section (9). A pressure port (25) is opened at the lower end of the pressure-pressurizing component (10). A fixing block (5) is installed on the left end of the valve core sealing section (9). A valve core (4) and a compression spring (11) are respectively fixedly installed on the left end of the fixing block (5). A first fastener (14) is fixedly installed on both the upper and lower ends of the main structural component (6). The valve core (4) is fixed on the left end... The system is equipped with a No. 3 seal (19) and a one-way valve (2). A No. 2 one-way valve spring (13) is fixedly installed on the left end of the one-way valve (2). An oil suction port (23) is opened at the lower end of the main structural component (6). An inner structural component (1) is fixedly installed inside the main structural component (6). The one-way valve (2) and valve core (4) are inserted into the inner structural component (1). A No. 3 fastener (16) is inserted on the outer surface of the inner structural component (1). An oil outlet block (3) is fixedly installed on the left end of the main structural component (6). An oil discharge port (24) is opened on the upper end of the oil outlet block (3). A No. 4 fastener (21) is fixedly installed on the left end of the oil outlet block (3). A No. 1 one-way valve spring (12) is fixedly installed on the right end of the No. 4 fastener (21). A steel ball (20) is fixedly installed on the right end of the No. 1 one-way valve spring (12).

2. The device for absorbing waste oil from bearings according to claim 1, characterized in that: The second fastener (15) is located on the right side of the second seal (18).

3. The device for absorbing waste oil from bearings according to claim 1, characterized in that: The valve core (4) is inserted into the compression spring (11).

4. The device for absorbing waste oil from bearings according to claim 1, characterized in that: The steel ball (20) is positioned to correspond to the one-way valve (2) on the left and right.