Pressure release valve

Abstract

The utility model discloses a pressure release valve, and relates to the technical field of valve bodies. The pressure relief valve comprises a valve body, a first communicating port, a second communicating port, a valve element assembly and a pressure relief port, the first communicating port, the second communicating port and the pressure relief port are formed in the valve body, the valve element assembly is installed in the valve body, the outer screw cap is in threaded connection with the valve body, the inner gland is installed in the outer screw cap, the spring is installed between the inner gland and the sealing cap, and a pressure relief hole penetrates through the pressure relief seat. The sealing cap closes the pressure relief hole, the side end of the middle of the inner gland seals the side through opening, and the side through opening is communicated with the pressure relief opening. The pressure relief valve is simple in structure, an enough cavity structure is arranged between the inner gland and the sealing cap, when the sealing cap does not seal the pressure relief hole in the pressure relief seat, the side end of the middle of the inner gland does not seal the side through opening at the moment, gas can enter the cavity structure from the pressure relief hole and then is transferred to the side through opening in the valve body, and the pressure relief valve is convenient to use. And finally, pressure is released from a pressure release opening in the surface of the valve body. The gas dispersion effect is good, and the service life of the valve body is long.

Description

Technical Field

[0001] This utility model relates to the field of valve body technology, and more specifically to a pressure relief valve. Background Technology

[0002] Traditional pressure relief valves suffer from poor structural stability and ineffective gas dispersion during pressure relief, resulting in limited service life and difficulty in efficiently relieving pressure. To further optimize the performance of pressure relief valves, the inventors developed this solution. Utility Model Content

[0003] The purpose of this utility model is to provide a pressure relief valve in order to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A pressure relief valve includes a valve body, a first connecting port, a second connecting port, a valve core assembly, and a pressure relief port. The valve body has the first connecting port, the second connecting port, and the pressure relief port. The valve core assembly is installed inside the valve body and includes an outer screw cap, an inner pressure cap, a spring, a sealing cap, a pressure relief seat, a pressure relief hole, and a side passage. The outer screw cap is threaded to the valve body, and the inner pressure cap is installed inside the outer screw cap. A spring is installed between the inner pressure cap and the sealing cap. The pressure relief seat has a through-hole, and the sealing cap closes the pressure relief hole. The side passage is sealed at the middle side end of the inner pressure cap, and the side passage communicates with the pressure relief port. The threaded connection between the outer screw cap and the valve body provides strong stability and facilitates efficient indirect control of the displacement of the inner pressure cap, preventing the side passage from closing at the middle side end of the inner pressure cap.

[0006] A preferred technical solution: The first connecting port has an external thread structure, and the structure of the first connecting port can be replaced according to requirements. It can also adopt an internal thread structure.

[0007] A preferred technical solution: The second connecting port has an internal thread structure, and the structure of the second connecting port can be replaced according to requirements. It can also adopt an external thread structure.

[0008] A preferred technical solution: A screw handle is connected to the inner pressure cover for easy hand-operated screwing control.

[0009] A preferred technical solution: The crank handle includes a control shaft and a grip, with the grip being inserted and installed onto the control shaft.

[0010] A preferred technical solution: The outer screw cap and its inner pressure cap rotate synchronously.

[0011] A preferred technical solution: A lower protrusion is provided at the bottom of the inner pressure cover to facilitate efficient installation of the spring and improve the spring's installation and limiting effect.

[0012] A preferred technical solution: The top of the sealing cap is provided with an upper protrusion, which facilitates efficient installation of the spring by matching with the lower protrusion at the bottom of the inner pressure cover.

[0013] The beneficial effects of this utility model are as follows:

[0014] The pressure relief valve of this invention has a simple structure. A sufficient cavity is provided between the inner pressure cover and the sealing cap. When the sealing cap does not seal the pressure relief hole on the pressure relief seat, the side opening at the middle end of the inner pressure cover is also not sealed. Gas can enter this cavity structure from the pressure relief hole, then transfer to the side opening inside the valve body, and finally be released from the pressure relief port on the surface of the valve body. This results in good gas dispersion and a long service life for the valve body. 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 cross-sectional view of the present invention;

[0017] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0018] Reference numerals: 1. Valve body; 2. First connecting port; 3. Second connecting port; 4. Valve core assembly; 41. Outer screw cap; 42. Inner pressure cap; 421. Turning handle; 4211. Control shaft; 4212. Handle; 422. Lower protrusion; 423. Sealing part; 424. Pressing part; 43. Spring; 44. Sealing cap; 441. Upper protrusion; 45. Pressure relief seat; 46. Pressure relief hole; 47. Side port; 5. Pressure relief port; 6. Cavity structure. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] like Figures 1 to 3As shown, this embodiment provides a pressure relief valve, including a valve body 1, a first connecting port 2, a second connecting port 3, a valve core assembly 4, and a pressure relief port 5. The valve body 1 is provided with the first connecting port 2, the second connecting port 3, and the pressure relief port 5. The valve core assembly 4 is installed inside the valve body 1. The valve core assembly 4 includes an outer screw cap 41, an inner pressure cap 42, a spring 43, a sealing cap 44, a pressure relief seat 45, a pressure relief hole 46, and a side passage 47. The outer screw cap 41 is threaded to the valve body 1. The inner pressure cap 42 is installed inside the outer screw cap 41. The spring 43 is installed between the inner pressure cap 42 and the sealing cap 44. The pressure relief hole 46 is passed through the pressure relief seat 45, and the sealing cap 44 closes the pressure relief hole 46. The side passage 47 is sealed at the middle side end of the inner pressure cap 42, and the side passage 47 communicates with the pressure relief port 5. The threaded connection between the outer cap 41 and the valve body 1 is strong, which facilitates efficient and indirect control of the displacement of the inner pressure cap 42, so that the side opening 47 at the middle end of the inner pressure cap 42 is no longer closed.

[0022] Furthermore, the first connecting port 2 has an external thread structure, and the structure of the first connecting port 2 can be replaced as needed, and it can also adopt an internal thread structure.

[0023] Furthermore, the second connecting port 3 has an internal thread structure, and the structure of the second connecting port 3 can be replaced as needed, and it can also adopt an external thread structure.

[0024] Furthermore, a screw handle 421 is connected to the inner pressure cover 42 for easy hand-operated screwing control.

[0025] Furthermore, the crank handle 421 includes a control shaft 4211 and a grip 4212, with the grip 4212 inserted and mounted onto the control shaft 4211.

[0026] Furthermore, the outer screw cap 41 and its inner pressure cap 42 rotate synchronously.

[0027] Furthermore, a lower protrusion 422 is provided at the bottom of the inner pressure cover 42 to facilitate efficient installation of the spring 43 and improve the installation limiting effect of the spring 43. A sealing part 423 for closing the side opening 47 is provided at the middle side end of the inner pressure cover 42, and a pressing part 424 for pressing the edge of the sealing cap 44 is also provided at the bottom end of the inner pressure cover 42.

[0028] Furthermore, the top of the sealing cap 44 is provided with an upper protrusion 441, which facilitates efficient installation of the spring 43 by cooperating with the lower protrusion 422 at the bottom of the inner pressure cover 42.

[0029] In this utility model, the pressure relief valve structure consists of an inner pressure cover 42 and an outer screw cap 41 assembled into a synchronously moving whole. The top of the inner pressure cover 42 is provided with a screw handle 421 for easy manual control. When the screw handle 421 is held and rotated, the outer screw cap 41 is screwed out of the valve body 1 until the bottom end of the inner pressure cover 42 moves out of the side opening 47. At this time, the gas entering the cavity structure 6 will be transferred to the side opening 47. As the inner pressure cover 42 moves upward, the force exerted by the spring 43 and the inner pressure cover 42 on the sealing cap 44 is reduced. At this time, the sealing cap 44 is lifted, and gas will enter the pressure relief hole 46 on the pressure relief seat 45, and then gas will enter the cavity structure 6.

Claims

1. A pressure relief valve, characterized in that, The valve includes a valve body, a first connecting port, a second connecting port, a valve core assembly, and a pressure relief port. The valve body is provided with the first connecting port, the second connecting port, and the pressure relief port. The valve core assembly is installed in the valve body and includes an outer screw cap, an inner pressure cap, a spring, a sealing cap, a pressure relief seat, a pressure relief hole, and a side passage. The outer screw cap is threaded to the valve body, and the inner pressure cap is installed inside the outer screw cap. A spring is installed between the inner pressure cap and the sealing cap. The pressure relief seat has a pressure relief hole through it, and the sealing cap closes the pressure relief hole. The side passage is sealed at the middle side end of the inner pressure cap, and the side passage communicates with the pressure relief port.

2. The pressure relief valve according to claim 1, characterized in that, The first connection port has an external thread structure.

3. The pressure relief valve according to claim 1, characterized in that, The second connection port has an internal thread structure.

4. The pressure relief valve according to claim 1, characterized in that, A turning handle is connected to the inner pressure cover.

5. The pressure relief valve according to claim 4, characterized in that, The crank includes a control shaft and a grip, with the grip being inserted and installed onto the control shaft.

6. The pressure relief valve according to claim 1, characterized in that, The outer screw cap and its inner pressure cap rotate synchronously.

7. The pressure relief valve according to claim 1, characterized in that, The bottom of the inner pressure cover is provided with a lower protrusion.

8. The pressure relief valve according to claim 1, characterized in that, The top of the sealing cap is provided with a protrusion.

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