A screw-fitted pressure relief valve

Abstract

This utility model relates to the field of pressure relief valve technology, specifically a spiral-assembled pressure relief valve, including a valve seat, a valve body, and a valve core. The valve core is disposed within the valve body, and the valve body is disposed within the valve seat. A spring is provided on the top of the valve core for elastic pressure increase. An external thread is provided on the outer circumference of the bottom of the valve body, and an internal thread corresponding to the external thread is provided on the inner circumference of the valve seat. The valve body and the valve seat are connected by threads. The outer circumference of the top of the valve body is provided with convex and concave structures at equal intervals for hand gripping. This assembly, consisting of the valve seat, valve body, and valve core, provides users with a pressure relief valve assembly that is highly detachable and easy to maintain. The valve body and valve seat are connected by external and internal threads, requiring no welding or bolt fixing; installation or disassembly can be completed simply by rotating the valve body. Disassembly can be done by hand, reducing reliance on tools and facilitating quick replacement of sealing rings or cleaning of impurities in the valve cavity.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief valve technology, specifically to a spiral-assembled pressure relief valve. Background Technology

[0002] Pressure relief valves are safety devices used to prevent system overpressure. When the pressure exceeds a certain value, they automatically open to release the pressure, protecting equipment and pipelines from damage. They are widely used in petroleum, chemical, power, heating and water supply industries to ensure the safe and stable operation of the system and extend the service life of equipment.

[0003] Existing pressure relief valves mostly have a closed structure for the valve core and spring. When inspecting and maintaining the valve body, special tools are required to remove the valve cover bolts, which leads to cumbersome operation, low maintenance efficiency, and poor ease of use. Therefore, a spiral assembly type pressure relief valve is proposed. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a spiral-assembled pressure relief valve.

[0005] The technical solution adopted by this utility model to solve its technical problem is a spiral assembly pressure relief valve, including a valve seat, a valve body and a valve core. The valve core is disposed in the valve body and the valve body is disposed in the valve seat. A spring for elastically increasing the pressure of the valve core is provided on the top of the valve core.

[0006] The valve body has an external thread on its bottom outer circumference, and the valve seat has an internal thread corresponding to the external thread on its inner circumference. The valve body and the valve seat are connected by a thread. The valve body has convex and concave structures at equal intervals on its top outer circumference for hand gripping. A sealing ring is provided at the closure point of the valve body and the valve seat.

[0007] By adopting the above technical solution, a pressure relief valve assembly with good disassembly and easy maintenance is provided for valve users through the valve seat, valve body and valve core. The valve body and valve seat are connected by external and internal threads, without the need for welding or bolt fixing. Installation or disassembly can be completed by simply rotating the valve body. Disassembly can be done by hand, reducing the reliance on disassembly tools and facilitating quick replacement of sealing rings or cleaning of impurities in the valve cavity.

[0008] Specifically, the valve body is covered with a detachable first perforated cover, and a spring is located between the first perforated cover and the valve core. A first buckle is provided on the inner side of the bottom of the first perforated cover, and a first buckle groove is provided on the top of the valve body for the first buckle to be fastened.

[0009] Specifically, the bottom of the valve seat is covered with a detachable second perforated cover, and the top inner side of the second perforated cover is provided with a second buckle. The valve seat has a second buckle groove for the second buckle to be fastened. The first and second perforated covers are made of polyethylene material.

[0010] By adopting the above technical solution, and through the snap-on design of the first hollow cover, after the personnel remove the first hollow cover with the snap-on structure from the valve body, the valve plate and rubber sealing ring of the valve core can be taken out, allowing personnel to better replace or clean and maintain them. At the same time, by removing the first hollow cover, the spring can be replaced, and a spring with the required elastic strength can be used on the valve plate to meet different pressure relief requirements. Similarly, the spring can also be omitted from the valve plate, and the sealing can be achieved by the valve plate falling under its own weight.

[0011] Specifically, the valve core includes a guide sleeve, a guide rod, a valve plate, and a rubber sealing ring. The valve body is provided with a throat. The guide sleeve is located at the bottom of the throat, the valve plate and the rubber sealing ring are located at the top, and the guide rod is inserted at the top of the throat.

[0012] By adopting the above technical solution and through the setting of the throat, when the valve plate is pressed down based on its own weight or the elastic force of the spring, the valve plate will seal with the throat based on the rubber sealing ring, thereby ensuring the sealing between the upper and lower parts of the valve body when it is not pressed down.

[0013] Specifically, the guide rod is connected to the bottom center of the valve plate and passes through the throat and is inserted into the guide sleeve. The rubber sealing ring is sleeved on the outer periphery of the bottom of the valve plate, and the bottom of the rubber sealing ring has a conical structure. The conical structure at the bottom of the rubber sealing ring can achieve self-tightening sealing under spring pressure, and the higher the pressure, the more reliable the sealing. It can be replaced separately after wear and tear, reducing costs.

[0014] The beneficial effects of this utility model are as follows: The assembly consisting of a valve seat, valve body, and valve core provides users with a pressure relief valve assembly that is highly detachable and easy to maintain. The valve body and valve seat are connected via external and internal threads, requiring no welding or bolt fixing; installation or disassembly can be completed simply by rotating the valve body. Disassembly can be done by hand, reducing reliance on tools and facilitating quick replacement of sealing rings or cleaning of impurities in the valve cavity. The snap-on design of the first perforated cover allows for the removal of the valve plate and rubber sealing ring from the valve body, facilitating replacement or cleaning. Furthermore, the spring can be replaced by removing the first perforated cover, allowing for the use of a spring with the required elasticity to meet different pressure relief needs. This solves the problem that existing pressure relief valves often have enclosed valve cores and springs, requiring specialized tools to remove valve cover bolts for internal valve body inspection and maintenance, resulting in cumbersome operation, low maintenance efficiency, and poor ease of use. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0017] Figure 2 This is a bottom view of the present invention;

[0018] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the valve core of this utility model;

[0020] In the figure: valve seat 1, second hollow cover 11, second buckle 12, second buckle groove 13, valve body 2, first hollow cover 21, first buckle 22, first buckle groove 23, spring 24, throat 25, valve core 3, guide sleeve 31, guide rod 32, valve plate 33, rubber sealing ring 34. Detailed Implementation

[0021] 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.

[0022] like Figures 1-4 As shown, the present invention provides a spiral assembly type pressure relief valve, which includes a valve seat 1, a valve body 2 and a valve core 3. The valve core 3 is disposed inside the valve body 2, and the valve body 2 is disposed inside the valve seat 1. A spring 24 for elastically increasing the pressure of the valve core 3 is disposed on the top of the valve core 3.

[0023] The valve body 2 has an external thread on its bottom outer periphery, and the valve seat 1 has an internal thread on its inner periphery corresponding to the external thread. The valve body 2 and the valve seat 1 are connected by a thread. The valve body 2 has a series of concave and convex structures at equal intervals on its top outer periphery for hand gripping. A sealing ring is provided at the closure point of the valve body 2 and the valve seat 1.

[0024] The present invention also includes a detachable first hollow cover plate 21 on the top of the valve body 2, and a spring 24 located between the first hollow cover plate 21 and the valve core 3. A first buckle 22 is provided on the inner side of the bottom of the first hollow cover plate 21, and a first buckle groove 23 is provided on the top of the valve body 2 for the first buckle 22 to be fastened.

[0025] The present invention also includes a detachable second hollow cover plate 11 at the bottom of the valve seat 1, a second buckle 12 on the inner side of the top of the second hollow cover plate 11, and a second buckle groove 13 for the second buckle 12 to be fastened. The first hollow cover plate 21 and the second hollow cover plate 11 are made of polyethylene material.

[0026] In use, by utilizing the snap-on design of the first hollow cover 21, after personnel remove the first hollow cover 21 with the snap-on structure from the valve body 2, the valve plate 33 and the rubber sealing ring 34 of the valve core 3 can be taken out, allowing personnel to better replace or clean and maintain them. At the same time, by removing the first hollow cover 21, the spring 24 can be replaced, and a spring 24 with the required elastic strength can be used on the valve plate 33 to meet different pressure relief requirements. Similarly, the spring 24 can also be omitted from the valve plate 33, and the sealing can be achieved by the valve plate 33 falling under its own weight.

[0027] This utility model also includes that the valve core 3 includes a guide sleeve 31, a guide rod 32, a valve plate 33 and a rubber sealing ring 34, and a throat 25 is provided inside the valve body 2. The guide sleeve 31 is located at the bottom of the throat 25, the valve plate 33 and the rubber sealing ring 34 are located at the top, and the guide rod 32 is inserted at the top of the throat 25.

[0028] When in use, by utilizing the throat 25, when the valve plate 33 is pressed down based on its own weight or the elastic force of the spring 24, the valve plate 33 will seal with the throat 25 based on the rubber sealing ring 34, thereby ensuring the sealing between the upper and lower parts of the valve body when it is not pressed down.

[0029] This utility model also includes a guide rod 32 connected to the bottom center of the valve plate 33, and the guide rod 32 passes through the throat 25 and is inserted into the guide sleeve 31. The rubber sealing ring 34 is sleeved on the bottom outer periphery of the valve plate 33, and the bottom of the rubber sealing ring 34 has a conical structure. The conical structure at the bottom of the rubber sealing ring 34 can achieve self-tightening sealing under the pressure of the spring 24, and the higher the pressure, the more reliable the sealing. It can be replaced separately after wear and tear, reducing costs.

[0030] In use, the valve seat 1 is fixedly installed on the airbag, box or pipeline system to which it is adapted. The installation can be fixed by gluing or heat welding. Then, based on the required pressure relief, the spring 24 with the required elastic pressure is selected, the first hollow cover 21 is snapped out, the spring 24 is placed on the valve plate 33, and the first hollow cover 21 is then snapped onto the first buckle 23 based on the first buckle 22. During this process, the spring 24 generates an elastic thrust on the valve plate 33, so that the valve plate 33 seals with the throat 25 based on the rubber sealing ring 34. When high pressure air or medium is generated below the valve seat 1, and the pressure value of the high pressure air is greater than the weight of the guide rod 32, the valve plate 33 and the thrust of the spring 24, the valve plate 33 will be pushed open by the pressure, so that the high pressure below the valve seat 1 is discharged to the outside.

[0031] When maintenance is required on valve body 2 or valve core 3, rotate valve body 2 counterclockwise to disengage from valve seat 1. This allows for maintenance of the valve seat 1 and valve body 2, and inspection of the wear of guide sleeve 31 and guide rod 32. When it is necessary to replace the seals or valve core 3, the first perforated cover 21 can be removed, and the valve plate 33 and rubber sealing ring 34 can be lifted out for replacement and maintenance. This method is flexible and convenient to use.

[0032] Furthermore, the first buckle 22 at the bottom of the first hollow cover 21 can be configured as a threaded structure. Similarly, the first buckle groove 23 can be configured as a threaded groove structure that adapts to the threaded structure of the first hollow cover 21, so that the first hollow cover 21 can be installed on the valve body 2 by means of threads.

[0033] 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 descriptions of the above embodiments and specifications 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 protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A spiral-assembled pressure relief valve, characterized in that, It includes a valve seat (1), a valve body (2) and a valve core (3), wherein the valve core (3) is disposed inside the valve body (2), the valve body (2) is disposed inside the valve seat (1), and a spring (24) for elastically pressurizing the valve core (3) is disposed on the top of the valve core (3); The valve body (2) has an external thread on its bottom outer periphery, and the valve seat (1) has an internal thread corresponding to the external thread on its inner periphery. The valve body (2) and the valve seat (1) are connected by a thread. The valve body (2) has a concave-convex structure at equal intervals on its top outer periphery for hand gripping. A sealing ring is provided at the closure point of the valve body (2) and the valve seat (1).

2. The spiral-assembled pressure relief valve according to claim 1, characterized in that, The valve body (2) is covered with a detachable first hollow cover plate (21) on the top, and the spring (24) is located between the first hollow cover plate (21) and the valve core (3). The bottom inner side of the first hollow cover plate (21) is provided with a first buckle (22), and the top of the valve body (2) is provided with a first buckle groove (23) for the first buckle (22) to be fastened.

3. A spiral-assembled pressure relief valve according to claim 2, characterized in that, The bottom of the valve seat (1) is covered with a detachable second perforated cover (11), and the inner side of the top of the second perforated cover (11) is provided with a second buckle (12). The valve seat (1) is provided with a second buckle groove (13) for the second buckle (12) to be fastened. The first perforated cover (21) and the second perforated cover (11) are made of polyethylene material.

4. A spiral-assembled pressure relief valve according to claim 3, characterized in that, The valve core (3) includes a guide sleeve (31), a guide rod (32), a valve plate (33), and a rubber sealing ring (34). The valve body (2) is provided with a throat (25). The guide sleeve (31) is located at the bottom of the throat (25), the valve plate (33) and the rubber sealing ring (34) are located at the top, and the guide rod (32) is inserted at the top of the throat (25).

5. A spiral-assembled pressure relief valve according to claim 4, characterized in that, The guide rod (32) is connected to the bottom center of the valve plate (33), and the guide rod (32) passes through the throat (25) and is inserted into the guide sleeve (31). The rubber sealing ring (34) is sleeved on the bottom outer periphery of the valve plate (33), and the bottom of the rubber sealing ring (34) has a conical structure.

Images