Efficient pressure relief device of unloading mechanism

Abstract

The utility model discloses an efficient pressure relief device of an unloading mechanism, which relates to the technical field of unloading valves 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, an unloading port is fixedly mounted on one side of the unloading valve body, and the unloading mechanism is mounted in the unloading valve body. The unloading mechanism comprises a movable plunger movably installed in the unloading valve body and a one-way valve fixedly installed in the unloading opening, a sliding supporting foot is fixedly installed on the side wall of the movable plunger, a driving mechanism is installed on the lower half portion of the unloading valve body, a limiting ring seat is fixedly installed above the movable plunger, and the sliding supporting foot is fixedly installed on the lower half portion of the unloading valve body. A movable guide rod is fixedly installed on the limiting ring base, and a sealing plate is fixedly installed at the lower end of the movable guide rod. According to the efficient pressure relief device of the unloading mechanism, through cooperative use of the unloading mechanism and the driving mechanism, lubricating oil in a lubricating system pipeline can be rapidly discharged under the low-pressure condition.

Description

TECHNICAL FIELD

[0001] The utility model relates to unloading valve technical field, specifically a kind of high-efficiency pressure relief device of unloading mechanism. BACKGROUND

[0002] Centralized lubrication system is a kind of device that accurately delivers lubricant to multiple friction points of equipment through automation, widely used in industrial machinery, transportation and energy equipment fields. The system is composed of oil pump, distributor, pipeline and control unit, which can provide lubrication for bearings, gears and other key components on time and quantity, significantly improving equipment reliability.

[0003] In order to ensure that the pressure of the whole system remains in a stable state, unloading valves are specially installed on the pipelines of the lubrication system. The function of these unloading valves is to effectively relieve the pressure of the pipelines of the lubrication system. When the lubrication system stops working, the lubricating oil in the pipelines of the lubrication system can be discharged through the unloading valves and returned to the oil tank. With the discharge of lubricating oil in the pipelines of the lubrication system, the pressure in the pipelines will become smaller and smaller, and some lubricating oils with poor flowability need a long time to be discharged through the unloading valves, resulting in low pressure relief efficiency. SUMMARY

[0004] The purpose of the utility model is to provide a kind of high-efficiency pressure relief device of unloading mechanism, to solve the problem of low pressure relief efficiency in the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of high-efficiency pressure relief device of unloading mechanism, including unloading valve body, the oil inlet is equipped on the upper end of the unloading valve body, the installation port is equipped in the bottom of the unloading valve body, the unloading port is fixedly installed on the side of the unloading valve body, the unloading mechanism is installed in the unloading valve body, the unloading mechanism includes movable plunger movably installed in the unloading valve body and one-way valve fixedly installed in the unloading port, the sliding support is fixedly installed on the side wall of the movable plunger, and the driving mechanism is installed in the lower half of the unloading valve body.

[0006] Preferably, a limit ring seat is fixedly installed above the movable plunger, an movable guide rod is fixedly installed on the limit ring seat, a sealing plate is fixedly installed on the lower end of the movable guide rod, and a sealing ring is fixedly installed on the edge of the sealing plate.

[0007] Preferably, an movable hole is formed in the limit ring seat, and the movable guide rod is movably installed on the limit ring seat through the movable hole.

[0008] Preferably, the sealing plate is movably installed below the limiting ring seat through a movable guide rod, an installation groove is formed at the edge of the sealing plate, the sealing ring is installed on the sealing plate through the installation groove, a sliding groove is formed on the inner wall of the unloading valve body, the sliding support is slidably installed on the inner wall of the unloading valve body through the sliding groove, and the movable plunger is slidably installed on the unloading valve body through the sliding support.

[0009] Preferably, the driving mechanism comprises an upper cam ring fixedly installed at the bottom of the movable plunger and a sealing plug cover fixedly installed in the installation port, a motor is fixedly installed on the sealing plug cover, a driving shaft is fixedly installed at the output end of the motor, a planetary reducer is arranged on the driving shaft, a lower cam ring is fixedly installed at the upper end of the driving shaft, and a tension spring is arranged between the sealing plug cover and the movable plunger.

[0010] Preferably, threads are arranged in the installation port, and the sealing plug cover is installed in the installation port through the threads.

[0011] Preferably, one end of the tension spring is fixedly installed on the sealing plug cover, the other end of the tension spring is fixedly installed on the movable plunger, and the lower cam ring is rotatably installed below the upper cam ring through the driving shaft.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. When the internal pressure of the pipeline exceeds the set threshold value, the motor drives the driving shaft to rotate, the rotation of the driving shaft causes the deflection of the lower cam ring, and then the tension spring exerts downward tension on the movable plunger. This action promotes the communication between the unloading port and the oil inlet, so that the lubricating oil is discharged through the unloading port, thereby realizing the pressure relief of the lubricating system pipeline. In addition, by accurately controlling the deflection angle of the lower cam ring, the downward stroke of the movable plunger can be adjusted, and then the opening size of the unloading port is adjusted. This mechanism allows fine adjustment of the pressure relief rate according to the actual pressure in the lubricating system pipeline.

[0014] 2. In the application, when the pressure in the lubricating system pipeline is low, the motor drives the lower cam ring to rotate continuously, causing the movable plunger to reciprocate. When the movable plunger moves downward, the lubricating oil in the lubricating system pipeline is sucked into the upper half of the unloading valve body; when the movable plunger moves upward, the lubricating oil in the upper half of the unloading valve body is extruded and discharged through the unloading port. This mechanism ensures that the lubricating oil in the lubricating system pipeline can be quickly discharged under low pressure, improving the pressure relief efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model;

[0016] Figure 2 It is a local structure schematic view of the utility model;

[0017] Figure 3 It is an unloading mechanism schematic view of the utility model;

[0018] Figure 4 It is a drive mechanism schematic view of the utility model.

[0019] The figure mark: 1, unloading valve body; 2, oil inlet; 3, unloading port; 4, installation port; 5, unloading mechanism; 501, limit ring seat; 502, movable guide rod; 503, sealing ring; 504, sealing plate; 505, movable plunger; 506, sliding support foot; 507, one-way valve; 6, drive mechanism; 601, upper cam ring; 602, lower cam ring; 603, drive shaft; 604, planetary reducer; 605, motor; 606, sealing plug; 607, tension spring. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0021] As shown in Figure 1 and Figure 2 The utility model provides a kind of high-efficiency pressure relief device of unloading mechanism technical scheme, including unloading valve body 1, unloading valve body 1 upper end is equipped with oil inlet 2, unloading valve body 1 bottom is equipped with installation port 4, unloading valve body 1 side is fixedly installed with unloading port 3, unloading valve body 1 is installed with unloading mechanism 5, unloading valve body 1 lower half is installed with drive mechanism 6. By the cooperation of unloading mechanism 5 and drive mechanism 6, lubricating oil in lubricating system pipeline can be quickly discharged under low pressure.

[0022] As shown in Figure 2 and Figure 3 Unloading mechanism 5 includes movable plunger 505 movably installed in unloading valve body 1 and one-way valve 507 fixedly installed in unloading port 3, sliding support foot 506 is fixedly installed on the side wall of movable plunger 505, limit ring seat 501 is fixedly installed above movable plunger 505, movable guide rod 502 is fixedly installed on limit ring seat 501, sealing plate 504 is fixedly installed at the lower end of movable guide rod 502, sealing ring 503 is fixedly installed at the edge of sealing plate 504, movable hole is formed in limit ring seat 501, and movable guide rod 502 is movably installed on limit ring seat 501 through movable hole.

[0023] Specifically, in the lubrication system, if the pressure inside the pipeline exceeds the normal operating range, the motor 605 can be activated. The operation of the motor 605 will drive the drive shaft 603 to rotate. With the rotation of the drive shaft 603, it will further cause the deflection of the lower cam ring 602. When the lower cam ring 602 is deflected, the tension spring 607 will be subjected to a force and pull the movable plunger 505 downward. The result of this series of actions is to form a communication state between the unloading port 3 and the oil inlet port 2. Once the unloading port 3 and the oil inlet port 2 are communicated, the lubricating oil in the lubrication system pipeline will be discharged through the unloading port 3, so that the pressure relief treatment of the lubrication system pipeline is realized. In addition, by precisely controlling the deflection angle of the lower cam ring 602, the downward stroke of the movable plunger 505 can be adjusted. Adjusting the downward stroke of the movable plunger 505 is actually adjusting the opening size of the unloading port 3. In this way, we can flexibly adjust the pressure relief speed according to the actual pressure situation in the lubrication system pipeline, to ensure the stable operation of the lubrication system. When the movable plunger 505 moves upward, the sealing plate 504 also moves upward, thereby blocking the oil inlet port 2, so that the hydraulic oil in the upper half of the unloading valve body 1 can be discharged through the one-way valve 507.

[0024] As shown in Figure 2 and Figure 4 , the drive mechanism 6 includes an upper cam ring 601 fixedly installed at the bottom of the movable plunger 505 and a sealing plug 606 fixedly installed in the installation port 4, the sealing plug 606 is fixedly installed with a motor 605, the output end of the motor 605 is fixedly installed with a drive shaft 603, the drive shaft 603 is provided with a planetary reducer 604, the upper end of the drive shaft 603 is fixedly installed with a lower cam ring 602, the sealing plug 606 and the movable plunger 505 are provided with a tension spring 607, the installation port 4 is provided with a thread, and the sealing plug 606 is installed in the installation port 4 through the thread.

[0025] Specifically, in the case of relatively low pressure in the lubrication system pipeline, the lower cam ring 602 can be continuously rotated by the driving action of the motor 605. When the lower cam ring 602 continuously rotates, the movable plunger 505 will reciprocate up and down accordingly. Specifically, when the movable plunger 505 moves downward, it will suck the lubricating oil in the lubrication system pipeline into the upper half of the unloading valve body 1. When the movable plunger 505 moves upward, it will exert pressure on the lubricating oil in the upper half of the unloading valve body 1, forcing the lubricating oil to be discharged to the outside through the unloading port 3. Through this mechanism, in the low pressure environment, the lubricating oil in the lubrication system pipeline can be effectively and quickly discharged, ensuring the smooth operation of the system.

[0026] Working principle: when using, the unloading valve body 1 is connected to the pipeline of the lubricating system through the oil inlet 2, and the unloading port 3 is communicated with the oil tank through the pipeline. When the internal pressure of the pipeline of the lubricating system is too large, the motor 605 can drive the driving shaft 603 to rotate, and the driving shaft 603 rotates to drive the lower cam ring 602 to deflect, and the tension spring 607 pulls down the movable plunger 505 after the lower cam ring 602 deflects, so that the unloading port 3 is communicated with the oil inlet 2, and after the unloading port 3 is communicated with the oil inlet 2, the lubricating oil in the pipeline of the lubricating system is discharged through the unloading port 3, so as to relieve the pressure of the pipeline of the lubricating system. And by controlling the deflection angle of the lower cam ring 602, the downward stroke of the movable plunger 505 can be adjusted, so as to adjust the opening size of the unloading port 3, and then the pressure relief speed is adjusted according to the pressure in the pipeline of the lubricating system. When the pressure in the pipeline of the lubricating system is small, the lower cam ring 602 can be rotated by the motor 605 all the time, and the movable plunger 505 moves up and down when the lower cam ring 602 rotates all the time. When the movable plunger 505 moves downward, it will suck the lubricating oil in the pipeline of the lubricating system into the upper part of the unloading valve body 1, and when the movable plunger 505 moves upward, it will extrude the lubricating oil in the upper part of the unloading valve body 1 to be discharged through the unloading port 3, so as to quickly discharge the lubricating oil in the pipeline of the lubricating system under low pressure.

[0027] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A high-efficiency pressure relief device for an unloading mechanism, comprising an unloading valve body (1), wherein the upper end of the unloading valve body (1) is provided with an oil inlet (2), the bottom of the unloading valve body (1) is provided with an installation port (4), and an 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 movable plunger (505) movably installed in the unloading valve body (1) and a one-way valve (507) fixedly installed in the unloading port (3), a sliding foot (506) is fixedly installed on the side wall of the movable plunger (505), and a driving mechanism (6) is installed at the lower half of the unloading valve body (1).

2. The high efficient pressure relief device of unloading mechanism according to claim 1, characterized in that: A limiting ring seat (501) is fixedly installed above the movable plunger (505), a movable guide rod (502) is fixedly installed on the limiting ring seat (501), a sealing plate (504) is fixedly installed at the lower end of the movable guide rod (502), and a sealing ring (503) is fixedly installed at the edge of the sealing plate (504).

3. The high efficient pressure relief device of unloading mechanism according to claim 2, characterized in that: The limiting ring seat (501) is provided with a movable hole, and the movable guide rod (502) is movably installed on the limiting ring seat (501) through the movable hole.

4. The high efficient pressure relief device of unloading mechanism according to claim 3, characterized in that: The sealing plate (504) is movably installed below the limiting ring seat (501) through the movable guide rod (502), the sealing plate (504) is provided with a mounting groove at the edge, the sealing ring (503) is installed on the sealing plate (504) through the mounting groove, a sliding groove is formed in the inner wall of the unloading valve body (1), the sliding foot (506) is slidably installed on the inner wall of the unloading valve body (1) through the sliding groove, and the movable plunger (505) is slidably installed in the unloading valve body (1) through the sliding foot (506).

5. A high efficiency pressure relief device for an unloading mechanism according to claim 4, characterized in that: The driving mechanism (6) comprises an upper cam ring (601) fixedly installed at the bottom of the movable plunger (505) and a sealing plug cover (606) fixedly installed in the mounting port (4), the sealing plug cover (606) is fixedly installed with a motor (605), the output end of the motor (605) is fixedly installed with a driving shaft (603), the driving shaft (603) is provided with a planetary reducer (604), the upper end of the driving shaft (603) is fixedly installed with a lower cam ring (602), and the sealing plug cover (606) and the movable plunger (505) are provided with a tension spring (607).

6. A high efficiency pressure relief device for an unloading mechanism according to claim 5, characterized in that: The mounting port (4) is provided with threads, and the sealing plug cover (606) is installed in the mounting port (4) through the threads.

7. A high efficiency pressure relief device for an unloading mechanism according to claim 6, characterized in that: One end of the tension spring (607) is fixedly installed on the sealing plug cover (606), the other end of the tension spring (607) is fixedly installed on the movable plunger (505), and the lower cam ring (602) is rotatably installed below the upper cam ring (601) through the driving shaft (603).

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