Unloading mechanism of lubricating system

Abstract

The utility model discloses an unloading mechanism of a lubricating system, which relates to the technical field of unloading, and comprises an unloading valve body, an oil inlet is arranged at the upper end of the unloading valve body, a mounting port is arranged at the bottom of the unloading valve body, a first unloading port is fixedly mounted on one side of the unloading valve body, the unloading mechanism is mounted on the unloading valve body, and a second unloading port is arranged on the other side of the unloading valve body. The unloading mechanism comprises a sealing end cover installed in the installation port in a threaded mode, a miniature electric push rod is fixedly installed on the sealing end cover, a spring seat is fixedly installed at the output tail end of the miniature electric push rod, a thrust spring is arranged on the spring seat, a plunger mechanism is movably installed above the thrust spring, and the plunger mechanism is fixedly installed on the sealing end cover. The plunger mechanism comprises a plunger body fixedly installed in the unloading valve body. According to the unloading mechanism of the lubricating system, the unloading mechanism can conduct pressure relief on a pipeline of the lubricating system, the pressure of the system is kept stable, and the plunger mechanism can prevent a lubricating component from bearing unnecessary pressure loads in a non-working state.

Description

Technical Field

[0001] This utility model relates to the field of unloading technology, specifically an unloading mechanism for a lubrication system. Background Technology

[0002] A centralized lubrication system is a device that automatically and precisely delivers lubricant to multiple friction points on equipment. It is widely used in industrial machinery, transportation, and energy equipment. The system consists of an oil pump, distributor, piping, and control unit, and can provide lubrication to critical components such as bearings and gears at regular intervals and in measured quantities, significantly improving equipment reliability.

[0003] To ensure the pressure of the entire system remains stable, unloading valves are specially installed on the piping of the lubrication system. These unloading valves effectively relieve pressure in the lubrication system piping. Even when the lubrication system stops operating, the internal pressure of the piping may still remain relatively high, thus the need for pressure relief persists. However, existing unloading valve designs cannot simultaneously meet the pressure relief requirements of the system in both operating and stopped states. Therefore, an unloading mechanism for the lubrication system is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an unloading mechanism for a lubrication system to solve the problem that pressure relief valves in the prior art cannot meet different pressure relief requirements.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an unloading mechanism for a lubrication system, comprising an unloading valve body, an oil inlet at the upper end of the unloading valve body, an installation port at the bottom of the unloading valve body, a first unloading port fixedly installed on one side of the unloading valve body, an unloading mechanism installed on the unloading valve body, the unloading mechanism comprising a sealing end cap threaded into the installation port, a miniature electric actuator fixedly installed on the sealing end cap, a spring seat fixedly installed at the output end of the miniature electric actuator, a thrust spring provided on the spring seat, a plunger mechanism movably installed above the thrust spring, the plunger mechanism comprising a plunger body fixedly installed inside the unloading valve body.

[0006] Preferably, an upward stop ring is fixedly installed on the inner wall of the unloading valve body, and an inlet / outlet notch is provided on the sealing end cover.

[0007] Preferably, the bottom of the spring seat is provided with a mounting groove, and the spring seat is mounted on the output end of the miniature electric actuator through the mounting groove.

[0008] Preferably, the plunger body is restricted below the oil inlet by an upward stop ring, one end of the thrust spring is connected to the spring seat, the other end of the thrust spring is connected to the plunger body, the output end of the miniature electric actuator passes through the sealing end cover through the inlet / outlet notch, and the spring seat is movably installed in the unloading valve body by the miniature electric actuator.

[0009] Preferably, the plunger mechanism further includes an installation port located in the middle of the plunger body and a second unloading port located on the side wall of the plunger body, and the second unloading port is connected to the installation port. A tension spring is provided in the installation port, a downward stop ring is fixedly installed on the inner wall of the installation port, a plug is movably installed in the installation port, a movable slide groove is provided on the plunger body, and a push rod is fixedly installed in the middle of the spring seat, and the push rod is vertically aligned with the movable slide groove on the plunger body.

[0010] Preferably, the upper surface of the spring seat is provided with a positioning groove, and the top rod is installed on the spring seat through the positioning groove.

[0011] Preferably, one end of the tension spring is fixed to the bottom of the mounting port, and the other end of the tension spring is fixedly mounted on the plug. The plug is restricted at the upper end of the mounting port by a downward stop ring.

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

[0013] 1. In this application, when the pressure inside the pipeline exceeds a set threshold, the plunger body will be subjected to pressure and move downwards. At this time, a connecting path is formed between the oil inlet and the first unloading port, causing the lubricating oil in the pipeline to be discharged through the first unloading port, thereby realizing the pressure relief operation of the lubrication system pipeline to maintain the stability of the system pressure. In addition, the movement of the miniature electric actuator can push the spring seat forward, thereby adjusting the compression of the thrust spring, thus precisely adjusting the unloading pressure according to the type of lubrication system pipeline.

[0014] 2. In this application, after the lubrication process is completed, some lubricating oil remains in the pipeline and remains under high pressure. At this time, by controlling the full extension of the miniature electric actuator, the push rod can be moved upward. The upward movement of the push rod will cause the plug to be pushed open, thereby allowing the lubricating oil in the pipeline to flow into the oil tank through the second unloading port. This process helps prevent the lubrication components from being subjected to additional pressure loads when not in operation, ensuring system safety, optimizing energy consumption, and meeting diverse unloading needs. Attached Figure Description

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

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the unloading mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the plunger mechanism of this utility model.

[0019] The following are the labeling elements in the diagram: 1. Unloading valve body; 2. Oil inlet; 3. First unloading port; 4. Installation port; 5. Unloading mechanism; 501. Thrust spring; 502. Spring seat; 503. Miniature electric actuator; 504. Sealing end cap; 505. Inlet / outlet notch; 506. Upward stop ring; 6. Piston mechanism; 601. Piston body; 602. Plug; 603. Installation port; 604. Second unloading port; 605. Push rod; 606. Movable slide; 607. Tension spring; 608. Downward stop ring. Detailed Implementation

[0020] 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.

[0021] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for an unloading mechanism of a lubrication system, including an unloading valve body 1, an oil inlet 2 at the upper end of the unloading valve body 1, an installation port 4 at the bottom of the unloading valve body 1, a first unloading port 3 fixedly installed on one side of the unloading valve body 1, an unloading mechanism 5 installed on the unloading valve body 1, and a plunger mechanism 6 movably installed above the thrust spring 501. The plunger mechanism 6 includes a plunger body 601 fixedly installed inside the unloading valve body 1. The unloading mechanism 5 can depressurize the pipeline of the lubrication system and maintain the stability of the system pressure. The plunger mechanism 6 can prevent the lubrication components from bearing unnecessary pressure loads when not in operation.

[0022] like Figure 2 and Figure 3 As shown, the unloading mechanism 5 includes a sealing end cap 504 threaded into the mounting port 4, a miniature electric actuator 503 fixedly mounted on the sealing end cap 504, a spring seat 502 fixedly mounted on the output end of the miniature electric actuator 503, a thrust spring 501 provided on the spring seat 502, an upper stop ring 506 fixedly mounted on the inner wall of the unloading valve body 1, an inlet / outlet notch 505 opened on the sealing end cap 504, a mounting groove opened at the bottom of the spring seat 502, and the spring seat 502 is mounted on the output end of the miniature electric actuator 503 through the mounting groove.

[0023] Specifically, in the lubrication system, when the pressure inside the pipeline reaches a specific threshold, i.e., when the pressure is too high, the plunger body 601 will be pressed downwards by the pressure. When the plunger body 601 is pressed down, a connecting channel is formed between the oil inlet 2 and the first unloading port 3. Through this connecting channel, the lubricating oil in the pipeline can be smoothly discharged to the outside of the system through the first unloading port 3. This process helps to relieve pressure in the pipeline of the lubrication system, ensuring that the pressure inside the system does not exceed the safe range, thereby maintaining the pressure stability of the entire lubrication system. In addition, through the precise control of the miniature electric actuator 503, the spring seat 502 can be pushed forward. This forward movement of the spring seat 502 can adjust the compression length of the thrust spring 501. The adjustment of the compression length of the thrust spring 501 allows the system to flexibly adjust the unloading pressure according to different types of lubrication system pipelines to adapt to different working conditions and requirements, ensuring the efficient and safe operation of the lubrication system.

[0024] like Figure 2 and Figure 4 As shown, the plunger mechanism 6 includes a plunger body 601 fixedly installed inside the unloading valve body 1. The plunger mechanism 6 also includes an installation port 603 located in the middle of the plunger body 601 and a second unloading port 604 located on the side wall of the plunger body 601. The second unloading port 604 is connected to the installation port 603. A tension spring 607 is provided inside the installation port 603. A downward stop ring 608 is fixedly installed on the inner wall of the installation port 603. A plug 602 is movably installed inside the installation port 603. A movable slide groove 606 is provided on the plunger body 601. A push rod 605 is fixedly installed in the middle of the spring seat 502. The push rod 605 is vertically aligned with the movable slide groove 606 on the plunger body 601. A positioning groove is provided on the upper surface of the spring seat 502. The push rod 605 is installed on the spring seat 502 through the positioning groove.

[0025] Specifically, when the miniature electric actuator 503 is fully extended, it drives the push rod 605 upward. During this upward movement, the push rod 605 applies force to open the plug 602. Once the plug 602 is open, the lubricating oil in the pipeline finds an outlet, flowing through the second unloading port 604 to the oil tank. When the miniature electric actuator 503 is retracted, the tension spring 607 provides tension, helping the plug 602 to reset. The reset plug 602 re-closes the second unloading port 604, ensuring that lubricating oil does not continue to flow out, thus effectively controlling the flow of lubricating oil.

[0026] Working principle: During use, the unloading valve body 1 is connected to the lubrication system pipeline through the oil inlet 2, and the first unloading port 3 is connected to the oil tank through a pipeline. When the pressure in the pipeline is too high, the plunger body 601 will be pressed down. When the plunger body 601 is pressed down, the oil inlet 2 and the first unloading port 3 are connected. At this time, the lubricating oil in the pipeline will be discharged through the first unloading port 3, thereby relieving the pressure in the lubrication system pipeline and maintaining the system pressure stability. At the same time, the miniature electric actuator 503 can drive the spring seat 502 to move forward, thereby adjusting the compression length of the thrust spring 501, and thus adjusting the unloading pressure according to the type of lubrication system pipeline. After lubrication is completed, some lubricating oil will remain in the pipeline. At this time, the micro electric actuator 503 can be fully extended. When the micro electric actuator 503 is fully extended, it will drive the push rod 605 to move upward. After the push rod 605 moves upward, it will push open the plug 602. After the plug 602 is opened, the lubricating oil in the pipeline will flow into the oil tank through the second unloading port 604, so as to avoid the lubrication components from bearing unnecessary pressure loads when not in operation, thereby protecting the system safety and optimizing energy consumption.

[0027] It will be apparent to those skilled in the art that this invention 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 essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A unloading mechanism of a lubricating system, comprising a unloading valve body (1), an oil inlet (2) is arranged at the upper end of the unloading valve body (1), an installation port (4) is arranged at the bottom of the unloading valve body (1), and a first unloading port (3) is fixedly installed on one side of the unloading valve body (1), characterized in that: The unloading valve body (1) is provided with an unloading mechanism (5), the unloading mechanism (5) comprises a sealing end cover (504) screwed into the mounting port (4), the sealing end cover (504) is fixedly provided with a micro electric push rod (503), the output end of the micro electric push rod (503) is fixedly provided with a spring seat (502), the spring seat (502) is provided with a thrust spring (501), the thrust spring (501) is movably provided with a plunger mechanism (6), the plunger mechanism (6) comprises a plunger body (601) fixedly provided in the unloading valve body (1). ​ 2. A pressure relief mechanism for a lubrication system according to claim 1, characterized in that: The unloading valve body (1) is provided with an unloading valve body (1), and the unloading valve body (1) is provided with an unloading valve body (1).

3. A pressure relief mechanism for a lubrication system according to claim 2, characterized in that: The bottom of the spring seat (502) is provided with a mounting groove, and the spring seat (502) is mounted on the output end of the micro electric push rod (503) through the mounting groove.

4. A pressure relief mechanism for a lubrication system according to claim 3, characterized in that: The plunger body (601) is limited below the oil inlet (2) through the upstop ring (506), one end of the thrust spring (501) is connected to the spring seat (502), the other end of the thrust spring (501) is connected to the plunger body (601), the output end of the micro electric push rod (503) passes through the sealing end cover (504) through the access gap (505), and the spring seat (502) is movably mounted in the unloading valve body (1) through the micro electric push rod (503).

5. A unloading mechanism for a lubricating system according to claim 4, characterized in that: The plunger mechanism (6) further comprises a mounting port (603) provided in the middle position of the plunger body (601) and a second unloading port (604) provided on the side wall of the plunger body (601), and the second unloading port (604) and the mounting port (603) are communicated together, the mounting port (603) is provided with a tension spring (607), the mounting port (603) is fixedly provided with a downstop ring (608) on the inner wall, the mounting port (603) is movably provided with a plug cover (602), the plunger body (601) is provided with a movable sliding groove (606), the spring seat (502) is fixedly provided with a jacking rod (605) in the middle position, and the jacking rod (605) is aligned with the movable sliding groove (606) on the plunger body (601) in the up-down direction.

6. A pressure relief mechanism for a lubrication system according to claim 5, characterized in that: The upper surface of the spring seat (502) is provided with a positioning groove, and the jacking rod (605) is mounted on the spring seat (502) through the positioning groove.

7. A pressure relief mechanism for a lubrication system according to claim 6, characterized in that: One end of the tension spring (607) is fixed to the bottom of the mounting port (603), the other end of the tension spring (607) is fixedly provided on the plug cover (602), and the plug cover (602) is limited at the upper end of the mounting port (603) through the downstop ring (608).

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