Automatic gravity pressure release valve

Abstract

The utility model discloses an automatic gravity pressure relief valve which comprises a valve body, a pressure relief pipe and a gravity pressure relief mechanism which are communicated with the valve body are installed on the left side of the valve body, the gravity pressure relief mechanism is arranged in the valve body and comprises an annular check block, the annular check block is installed on the inner wall of the valve body, and the annular check block is connected with the valve body. An annular check block is arranged on the top of the valve body, an annular sealing plate is arranged on the top of the annular check block, a gravity block and a limiting disassembly and assembly mechanism are installed on the top of the annular sealing plate, and the limiting disassembly and assembly mechanism is arranged on the valve body and comprises a valve deck. According to the gravity automatic pressure release valve, the annular check block, the annular sealing plate, the gravity block, the sealing block, the positioning groove and the positioning block are matched with one another, so that when pressure larger than 640 Pa is generated in the valve body, the gravity block can move upwards, gas in the valve body can be exhausted, and the safety of the valve body is improved. Complicated structures such as a spring are prevented from being used for pressure relief.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure relief valves, in particular to a gravity automatic pressure relief valve. Background Art

[0002] Automatic pressure relief valves can open and close automatically according to the working pressure of the system. They are usually installed on equipment or pipelines in closed systems to protect system safety.

[0003] According to the application number: CN201820092027.1, a safety pressure relief valve that is easy to adjust includes a valve body, a fixed seat is provided at the lower end of the valve body, a second fixed seat is hinged at the lower end of the fixed seat, a pressure relief port is provided at one end of the second fixed seat, a piston is provided at one end of the pressure relief port, the piston is plate-shaped, a notch is provided at one end of the piston, the piston is slidably connected to the second fixed seat through a slider, a baffle is provided at one end of the piston, a through hole is provided on the baffle, an adjusting valve stem is provided inside the valve body, a spring is provided between the adjusting valve stem and the baffle, a stem nut matching the adjusting valve stem is provided at the upper end of the valve body, and a discharge port is provided on one side of the valve body.

[0004] The pressure relief valve in the above case releases pressure through complex structures such as springs, which makes it inconvenient to disassemble the pressure relief structure in the valve body for cleaning and maintenance later, thereby reducing practicality. For this reason, we provide a gravity automatic pressure relief valve. Utility Model Content

[0005] The purpose of the utility model is to provide a gravity automatic pressure relief valve to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a gravity automatic pressure relief valve, comprising:

[0007] A valve body, wherein a pressure relief pipe communicating with the valve body is installed on the left side of the valve body;

[0008] A gravity pressure relief mechanism, the gravity pressure relief mechanism is arranged inside the valve body, the gravity pressure relief mechanism comprises an annular stopper, the annular stopper is installed on the inner wall of the valve body, an annular sealing plate is arranged on the top of the annular stopper, and a gravity block is installed on the top of the annular sealing plate;

[0009] The position limiting and disassembling mechanism is arranged on the valve body, and the position limiting and disassembling mechanism comprises a valve cover, and the valve cover is arranged on the top of the valve body.

[0010] Preferably, a sealing block is installed at the bottom of the annular sealing plate, and the bottom of the sealing block passes through the annular stopper and extends to the outside thereof. Positioning grooves are provided on the tops of the left and right sides of the inner wall of the valve body, and positioning blocks matching the positioning grooves are installed on the left and right sides of the gravity block. The side of the positioning block close to the positioning groove passes through the positioning groove and extends to its interior to make sliding contact with the inner wall of the positioning groove.

[0011] Preferably, a fixing plate is installed on the surface of the valve body and on the surface of the valve cover, and fixing grooves are provided on both left and right sides of the fixing plate. The bottoms of the left and right sides of the inner wall of the fixing groove are fixedly connected by a sliding rod.

[0012] Preferably, the surface of the sliding rod is slidably connected to a sliding block, the groove on the inner wall of the fixed groove is rotatably connected to a threaded rod through a bearing, the surface of the threaded rod and the position corresponding to the sliding block are threadedly connected to a moving block, and the bottom of the moving block is fixedly connected to the top of the sliding block.

[0013] Preferably, one end of the threaded rod away from the valve cover passes through the fixing groove and extends to the outside thereof, and a rotating block is installed on the threaded rod.

[0014] Preferably, a limiting block is installed on the side of the movable block close to the valve cover, and limiting grooves matching the limiting block are provided on the left and right sides of the valve cover. The side of the limiting block close to the limiting groove penetrates the limiting groove and extends to its interior to contact the inner wall of the limiting groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model realizes a gravity automatic pressure relief valve through the mutual cooperation of annular block, annular sealing plate, gravity block, sealing block, positioning groove and positioning block. When the pressure inside the valve body is greater than 640Pa, the gravity block will move upward, so that the gas inside the valve body can be discharged, avoiding the need for complex structures such as springs to relieve pressure.

[0017] 2. The utility model facilitates the disassembly of the internal structure of the valve body for maintenance and cleaning through the mutual cooperation of the valve cover, the fixing plate, the fixing groove, the sliding rod, the sliding block, the threaded rod, the moving block, the rotating block, the limiting block and the limiting groove, thereby improving the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 It is a structural cross-sectional view of the front view of the utility model;

[0020] Figure 3 For this utility model Figure 2A partial enlarged view of middle A.

[0021] In the figure: 1 valve body, 11 pressure relief pipe, 2 gravity pressure relief mechanism, 21 annular stopper, 22 annular sealing plate, 23 gravity block, 24 sealing block, 25 positioning groove, 26 positioning block, 3 limit disassembly mechanism, 31 valve cover, 32 fixed plate, 33 fixed groove, 34 sliding rod, 35 slider, 36 threaded rod, 37 moving block, 300 rotating block, 38 limit block, 39 limit groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 A gravity automatic pressure relief valve comprises: a valve body 1, a pressure relief pipe 11 which is interconnected with the valve body 1 and is fixedly connected to the left side of the valve body 1, and the valve body 1 is connected and fixed to external equipment through a flange at the bottom of the surface.

[0024] The gravity pressure relief mechanism 2 is arranged inside the valve body 1. The gravity pressure relief mechanism 2 includes an annular stopper 21, which is installed on the inner wall of the valve body 1. An annular sealing plate 22 is arranged on the top of the annular stopper 21. The bottom of the annular sealing plate 22 contacts with the top of the annular stopper 21. The surface of the annular sealing plate 22 slides in contact with the inner wall of the valve body 1. A gravity block 23 is fixedly connected to the top of the annular sealing plate 22. A sealing block 24 is fixedly connected to the bottom of the annular sealing plate 22. The bottom of the sealing block 24 passes through the annular stopper 21 and extends to the outside thereof. Positioning grooves 25 are provided on the top of the left and right sides of the inner wall of the valve body 1. Positioning blocks 26 that are adapted to the positioning grooves 25 are fixedly connected to the left and right sides of the gravity block 23. A side of the positioning block 26 close to the positioning groove 25 passes through the positioning groove 25 and extends to the inside thereof to slide in contact with the inner wall of the positioning groove 25. By setting the positioning groove 25 and the positioning block 26, the stability of the gravity block 23 during movement is improved.

[0025] Through the mutual cooperation of the annular stopper 21, the annular sealing plate 22, the gravity block 23, the sealing block 24, the positioning groove 25 and the positioning block 26, a gravity automatic pressure relief valve is realized. When a pressure greater than 640Pa is generated inside the valve body 1, the gravity block 23 will move upward, so that the gas inside the valve body 1 can be discharged, avoiding the need for pressure relief through complex structures such as springs.

[0026] The limiting disassembly mechanism 3 is arranged on the valve body 1. The limiting disassembly mechanism 3 includes a valve cover 31. The valve cover 31 is arranged on the top of the valve body 1. A fixing plate 32 is fixedly connected to the surface of the valve body 1 and located on the surface of the valve cover 31. The bottom of the valve cover 31 contacts the top of the valve body 1. The inner wall of the fixing plate 32 contacts the surface of the valve cover 31. A fixing groove 33 is provided on both sides of the fixing plate 32. The bottoms of the left and right sides of the inner wall of the fixing groove 33 are fixedly connected by a sliding rod 34. The surface of the sliding rod 34 is slidably connected to a sliding block 35. The groove of the inner wall of the fixing groove 33 is rotatably connected to a A threaded rod 36 is provided, and a moving block 37 is threadedly connected on the surface of the threaded rod 36 and at the position corresponding to the slider 35. The bottom of the moving block 37 is fixedly connected to the top of the slider 35. The end of the threaded rod 36 away from the valve cover 31 passes through the fixed groove 33 and extends to the outside thereof. A rotating block 300 is fixedly connected to the threaded rod 36. The side of the moving block 37 close to the valve cover 31 is fixedly connected to the limiting block 38. The left and right sides of the valve cover 31 are provided with limiting grooves 39 that are compatible with the limiting block 38. The side of the limiting block 38 close to the limiting groove 39 passes through the limiting groove 39 and extends to its interior to contact the inner wall of the limiting groove 39.

[0027] Specifically, first separate the valve body 1 from the external equipment, and then rotate the rotating block 300, the rotating block 300 drives the threaded rod 36 to rotate, the threaded rod 36 drives the moving block 37 to move away from the limiting groove 39, the moving block 37 drives the limiting block 38 to move away from the limiting groove 39, so that the limiting block 38 and the limiting groove 39 are separated, and then pull the valve cover 31 upward to open it, and then pull the gravity block 23 upward through the top handle of the gravity block 23, the gravity block 23 drives the annular sealing plate 22 and the sealing block 24 to move upward, the gravity block 23 drives the positioning block 26 to move upward, so that the positioning block 26 and the positioning groove 25 are separated, the gravity block 23 drives the annular sealing plate 22 and the sealing block 24 to separate from the valve body 1 to complete the disassembly.

[0028] Through the mutual cooperation of the valve cover 31, the fixing plate 32, the fixing groove 33, the sliding rod 34, the sliding block 35, the threaded rod 36, the moving block 37, the rotating block 300, the limiting block 38 and the limiting groove 39, it is convenient to disassemble the internal structure of the valve body 1 for maintenance and cleaning, thereby improving practicality.

[0029] During use, when a pressure greater than 640Pa is generated inside the valve body 1, the annular sealing plate 22 and the sealing block 24 inside the valve body 1 will be pushed upward, and the annular sealing plate 22 drives the gravity block 23 to move upward, so that the annular sealing plate 22 moves to the top of the pressure relief pipe 11, so that the gas can be discharged through the pressure relief pipe 11.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gravity automatic pressure relief valve, characterized in that: include: A valve body (1), wherein a pressure relief pipe (11) in communication with the valve body (1) is installed on the left side of the valve body (1); A gravity pressure relief mechanism (2), the gravity pressure relief mechanism (2) being arranged inside the valve body (1), the gravity pressure relief mechanism (2) comprising an annular stopper (21), the annular stopper (21) being mounted on the inner wall of the valve body (1), an annular sealing plate (22) being arranged on the top of the annular stopper (21), and a gravity block (23) being mounted on the top of the annular sealing plate (22); A position limiting and disassembling mechanism (3), wherein the position limiting and disassembling mechanism (3) is arranged on the valve body (1), and the position limiting and disassembling mechanism (3) comprises a valve cover (31), and the valve cover (31) is arranged on the top of the valve body (1).

2. A gravity automatic pressure relief valve according to claim 1, characterized in that: A sealing block (24) is installed at the bottom of the annular sealing plate (22), and the bottom of the sealing block (24) passes through the annular stopper (21) and extends to the outside thereof. Positioning grooves (25) are provided at the tops of the left and right sides of the inner wall of the valve body (1), and positioning blocks (26) adapted to the positioning grooves (25) are installed on the left and right sides of the gravity block (23), and the side of the positioning block (26) close to the positioning groove (25) passes through the positioning groove (25) and extends to the inside thereof to slide in contact with the inner wall of the positioning groove (25).

3. A gravity automatic pressure relief valve according to claim 2, characterized in that: A fixing plate (32) is installed on the surface of the valve body (1) and on the surface of the valve cover (31), and fixing grooves (33) are provided on both the left and right sides of the fixing plate (32), and the bottoms of the left and right sides of the inner wall of the fixing groove (33) are fixedly connected by a sliding rod (34).

4. A gravity automatic pressure relief valve according to claim 3, characterized in that: The surface of the slide rod (34) is slidably connected to a slider (35); a threaded rod (36) is rotatably connected in a groove on the inner wall of the fixed groove (33) via a bearing; a moving block (37) is threadedly connected on the surface of the threaded rod (36) at a position corresponding to the slider (35); and the bottom of the moving block (37) is fixedly connected to the top of the slider (35).

5. A gravity automatic pressure relief valve according to claim 4, characterized in that: One end of the threaded rod (36) away from the valve cover (31) passes through the fixing groove (33) and extends to the outside thereof, and a rotating block (300) is mounted on the threaded rod (36).

6. A gravity automatic pressure relief valve according to claim 5, characterized in that: A limiting block (38) is installed on one side of the movable block (37) close to the valve cover (31); limiting grooves (39) matching the limiting block (38) are provided on both the left and right sides of the valve cover (31); and a side of the limiting block (38) close to the limiting groove (39) penetrates the limiting groove (39) and extends to the inside thereof to contact the inner wall of the limiting groove (39).

Images