Mechanical forced pressure release valve of lubricating pump

Abstract

The utility model provides a mechanical forced pressure release valve of a lubricating pump, which can effectively solve the problem that the pressure release of the lubricating pump is unstable, greatly increases the pressure release speed of the lubricating pump of a centralized lubricating system and the oil supply stability of a distributor, and comprises a valve body, an oil inlet hole is formed in the top of the valve body, an oil way is arranged in the valve body, the outer side of the valve body is communicated with an oil outlet and a pressure regulating valve, the bottom of the valve body is communicated with a forced pressure relief valve, the oil outlet, the pressure regulating valve and the forced pressure relief valve are all communicated with the oil way, and a pressure relief umbrella-shaped valve is arranged at the position where the oil outlet is communicated with the oil way. A pressure relief umbrella-shaped valve is arranged on the inner wall of the oil outlet, a spring is installed between the pressure relief umbrella-shaped valve and the oil way, a pressure relief hole is formed in the inner wall of the oil outlet, a plunger rod is arranged on the rear side of the pressure relief umbrella-shaped valve and matched with the pressure relief hole, the pressure regulating valve comprises an internal thread strip pipe, and the internal thread strip pipe is communicated with the oil way.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure relief valves, in particular to a mechanical forced pressure relief valve for a lubrication pump. Background Art

[0002] The lubrication pump pressure relief on the market now adopts the method of stopping the oil pump and using the pipeline's own pressure to push the umbrella valve to complete the pressure relief work. This structure is limited in its own pipeline pressure, and sometimes the air in the main pipe cannot be discharged in time, which often makes the lubrication pump difficult to relieve pressure, slow to relieve pressure, or even not relieve pressure, resulting in the phenomenon of the distributor not working. Based on the above problems, if the lubrication pump's pressure relief umbrella valve can be pushed back smoothly and complete the pressure relief every time it works, it is very necessary to add a set of forced pressure relief device units when it performs pressure relief work to ensure that it can provide long-term and stable pressure relief every time it performs pressure relief work. Utility Model Content

[0003] In view of the defects existing in the prior art, the technical problem solved by the utility model is that the lubrication pump pressure relief on the market now adopts the method of stopping the oil pump and using the pipeline's own pressure to push the umbrella-shaped valve to complete the pressure relief work. This structure has limited pipeline pressure itself, and sometimes there is air in the main pipe that cannot be discharged in time, which often leads to difficulty in pressure relief of the lubrication pump, slow pressure relief, or even no pressure relief, resulting in the phenomenon that the distributor does not work from time to time. A mechanical forced pressure relief valve for a lubrication pump is provided.

[0004] In order to achieve the above objectives, the utility model provides:

[0005] A mechanical forced pressure relief valve for a lubrication pump comprises a valve body, an oil inlet hole is arranged on the top of the valve body, an oil circuit is arranged in the valve body, an oil outlet and a pressure regulating valve are connected to the outside of the valve body, a forced pressure relief valve is connected to the bottom of the valve body, the oil outlet, the pressure regulating valve and the forced pressure relief valve are all connected to the oil circuit, a pressure relief umbrella valve is arranged at the position where the oil outlet is connected to the oil circuit, a spring is installed between the pressure relief umbrella valve and the oil circuit, a pressure relief hole is arranged on the inner wall of the oil outlet, a plunger rod is arranged on the rear side of the pressure relief umbrella valve, and the plunger rod cooperates with the pressure relief hole.

[0006] Preferably, the pressure regulating valve includes an internally threaded strip tube, the internally threaded strip tube is connected to the oil circuit, the internal threads of the internally threaded strip tube are connected to a bolt plug, an adjusting spring is provided at the inner end of the bolt plug, and a sealing ball for sealing is provided between the adjusting spring and the oil circuit; the adjusting spring provides elastic force for the sealing ball, so that the sealing ball seals the internally threaded strip tube and the oil circuit, and rotating the bolt plug can change the elastic force of the adjusting spring, thereby changing the sealing pressure between the sealing ball and the oil circuit.

[0007] Preferably, the forced pressure relief valve includes an oil storage pipe, a threaded connecting pipe is provided at the top of the oil storage pipe, an internal threaded hole is reserved at the bottom end of the valve body located at the oil circuit, the threaded connecting pipe is connected to the internal threaded hole, and the internal threaded hole is located at the rear side of the pressure relief umbrella valve.

[0008] Preferably, the bottom of the oil storage pipe is threadedly connected with a threaded plunger, the inner end of the threaded plunger is provided with a pressure spring, a plunger is provided between the pressure spring and the internal threaded hole, and the plunger extends into the oil circuit and is located at the rear lower side of the pressure relief umbrella valve.

[0009] Compared with the prior art, the advantages of the utility model are:

[0010] The lubricating oil enters the oil inlet hole, then passes through the pressure regulating valve, and at the same time pushes open the pressure relief umbrella valve. The pressure relief umbrella valve drives the plunger rod to move backward to block the pressure relief hole. The lubricating oil then pushes open the pressure spring inside the forced pressure relief valve to drive the plunger downward, and the oil enters the oil storage pipe to store pressure and oil. At the same time, the lubricating oil is transported to each distributor in the centralized lubrication system along the oil outlet. At this time, the lubricating oil stops working after reaching the rated pressure. The pressure spring in the forced pressure relief valve drives the plunger to return to the pressure relief umbrella valve to force input pressure to make it rebound. The pressure relief umbrella valve drives the plunger rod to move forward to leave the pressure relief hole, and the lubricating oil in the main pipe flows out through the pressure relief hole, thus completing a forced pressure relief work.

[0011] The installation of a forced pressure relief valve can effectively solve the problem that the lubrication pump cannot relieve pressure due to the high viscosity of the lubricating oil. In addition, the valve adopts a modular design, can be disassembled and installed, and is extremely simple to install. It provides sufficient pressure relief reverse thrust for the pressure relief of the centralized lubrication system, ensuring that the pressure relief umbrella valve in the lubrication pump is pushed back to relieve pressure and reset normally. It ensures the normal oil supply of the equipment lubrication system, thereby greatly increasing the service life of the equipment and greatly improving the production efficiency of the equipment.

[0012] The utility model discloses a mechanical forced pressure relief valve for a lubricating pump which can effectively solve the problem of unstable pressure relief of the lubricating pump, thereby greatly increasing the pressure relief speed of the lubricating pump of the centralized lubrication system and the stability of the oil supply of the distributor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the main structure diagram of this design;

[0014] Figure 2 Designed for this Figure 1 Schematic diagram of the structure viewed from above;

[0015] Figure 3 Design for this Figure 1 Schematic diagram of the structure from top view;

[0016] Figure 4 This is a schematic diagram of the side cross-sectional structure of the main body in this design;

[0017] Figure 5 It is a schematic diagram of the top cross-sectional structure of the main body in this design;

[0018] Figure 6 This is a side view structural diagram of the main body in this design;

[0019] Figure 7 This is a schematic diagram of the other side structure of the main body in this design.

[0020] In the figure: 1. valve body; 11. oil inlet hole; 12. oil circuit; 2. oil outlet; 21. pressure relief umbrella valve; 22. spring; 23. pressure relief hole; 24. plunger rod; 3. pressure regulating valve; 31. internal threaded strip tube; 32. bolt plug; 33. adjusting spring; 34. sealing ball; 4. forced pressure relief valve; 41. oil storage pipe; 42. threaded plunger; 43. pressure spring; 44. plunger; 45. threaded hole. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0022] See also Figure 1-7 As shown, a mechanical forced pressure relief valve for a lubrication pump comprises a valve body 1, an oil inlet hole 11 is arranged on the top of the valve body 1, an oil circuit 12 is arranged in the valve body 1, an oil outlet 2 and a pressure regulating valve 3 are connected to the outside of the valve body 1, a forced pressure relief valve 4 is connected to the bottom of the valve body 1, the oil outlet 2, the pressure regulating valve 3 and the forced pressure relief valve 4 are all connected to the oil circuit 12, a pressure relief umbrella valve 21 is arranged at the position where the oil outlet 2 is connected to the oil circuit 12, a spring 22 is installed between the pressure relief umbrella valve 21 and the oil circuit 12, a pressure relief hole 23 is arranged on the inner wall of the oil outlet 2, a plunger rod 24 is arranged on the rear side of the pressure relief umbrella valve 21, and the plunger rod 24 cooperates with the pressure relief hole 23.

[0023] In this embodiment, the pressure regulating valve 3 includes an internally threaded tube 31, which is connected to the oil circuit 12. The internal threaded tube 31 is internally threadedly connected to a bolt plug 32. An adjusting spring 33 is provided at the inner end of the bolt plug 32. A sealing ball 34 for sealing is provided between the adjusting spring 33 and the oil circuit 12. The adjusting spring 33 provides elastic force for the sealing ball 34, so that the sealing ball 34 seals the internally threaded tube 31 and the oil circuit 12. Rotating the bolt plug 32 can change the elastic force of the adjusting spring 33, thereby changing the sealing pressure between the sealing ball 34 and the oil circuit 12.

[0024] In this embodiment, the forced pressure relief valve 4 includes an oil storage pipe 41, a threaded connecting pipe is provided at the top of the oil storage pipe 41, and an internal threaded hole 45 is reserved at the bottom end of the valve body 1 located at the oil circuit 12. The threaded connecting pipe is connected to the internal threaded hole 45, and the internal threaded hole 45 is located on the rear side of the pressure relief umbrella valve 21.

[0025] In this embodiment, the bottom of the oil storage pipe 41 is threadedly connected to a threaded plunger 42, and a pressure spring 43 is provided at the inner end of the threaded plunger 42. A plunger 44 is provided between the pressure spring 43 and the internal threaded hole 45. The plunger 44 extends into the oil circuit 12 and is located at the rear lower side of the pressure relief umbrella valve 21.

[0026] Working mode: connect the oil inlet 11 to the lubricating oil pump, start the lubricating oil pump, and the motor drives the gear pump to suck oil. The lubricating oil enters the oil inlet 11, and then passes through the pressure regulating valve 3, and at the same time pushes open the pressure relief umbrella valve 21. The pressure relief umbrella valve 21 drives the plunger rod 24 to move backward to block the pressure relief hole 23. The lubricating oil then pushes open the pressure spring 43 inside the forced pressure relief valve 4 to drive the plunger 44 to move downward, and the oil enters the oil storage pipe 41 for pressure storage and oil storage; at the same time, the lubricating oil is transported to each distributor in the centralized lubrication system along the oil outlet 2. At this time, the lubricating oil stops working after reaching the rated pressure. The pressure spring 43 in the forced pressure relief valve 4 drives the plunger 44 to return to the pressure relief umbrella valve 21 to force the input pressure to make it rebound. The pressure relief umbrella valve 21 drives the plunger rod 24 to move forward to leave the pressure relief hole 23, and the lubricating oil in the main pipe flows out through the pressure relief hole 23, thus completing a forced pressure relief work.

[0027] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to the present invention is within the scope of protection.

Claims

1. A mechanical forced pressure relief valve for a lubrication pump, comprising a valve body (1), wherein the top of the valve body (1) is provided with an oil inlet hole (11), and an oil passage (12) is provided inside the valve body (1), characterized in that: The outer side of the valve body (1) is connected to an oil outlet (2) and a pressure regulating valve (3); the bottom of the valve body (1) is connected to a forced pressure relief valve (4); the oil outlet (2), the pressure regulating valve (3) and the forced pressure relief valve (4) are all connected to an oil circuit (12); a pressure relief umbrella valve (21) is provided at the position where the oil outlet (2) is connected to the oil circuit (12); a spring (22) is installed between the pressure relief umbrella valve (21) and the oil circuit (12); a pressure relief hole (23) is provided on the inner wall of the oil outlet (2); a plunger rod (24) is provided on the rear side of the pressure relief umbrella valve (21); the plunger rod (24) cooperates with the pressure relief hole (23).

2. A mechanical forced pressure relief valve for a lubrication pump according to claim 1, characterized in that: The pressure regulating valve (3) comprises an internally threaded tube (31), the internally threaded tube (31) being connected to an oil circuit (12), the internal thread of the internally threaded tube (31) being connected to a bolt plug (32), an adjusting spring (33) being arranged at the inner end of the bolt plug (32), and a sealing ball (34) for sealing being arranged between the adjusting spring (33) and the oil circuit (12).

3. The mechanical forced pressure relief valve for a lubrication pump according to claim 1, characterized in that: The forced pressure relief valve (4) comprises an oil storage pipe (41), the top end of the oil storage pipe (41) is provided with a threaded connecting pipe, the bottom end of the valve body (1) located in the oil circuit (12) is reserved with an internal threaded hole (45), the threaded connecting pipe is connected to the internal threaded hole (45), and the internal threaded hole (45) is located at the rear side of the pressure relief umbrella valve (21).

4. A mechanical forced pressure relief valve for a lubrication pump according to claim 3, characterized in that: The bottom opening of the oil storage pipe (41) is threadedly connected to a threaded plunger (42), the inner end of the threaded plunger (42) is provided with a pressure spring (43), a plunger (44) is provided between the pressure spring (43) and the internal threaded hole (45), and the plunger (44) extends into the oil circuit (12) and is located at the rear lower side of the pressure relief umbrella valve (21).

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