Pressure release valve capable of adjusting pressure

Abstract

The utility model discloses a pressure release valve capable of adjusting pressure. The pressure release valve comprises a valve body and a dismounting mechanism, the valve body is sleeved with a cover body, the interior of the cover body is fixedly connected with a supporting plate, the interior of the supporting plate is slidably connected with a rod body, the bottom end of the rod body is fixedly connected with a valve plug, the rod body is sleeved with a first spring, and the bottom end of the first spring is fixedly connected with the valve plug. The top end of the first spring is tightly attached to the interior of the supporting plate. The dismounting and mounting mechanism comprises a fixing block fixedly connected to the outer side of the cover body and a supporting block fixedly connected to the outer side of the valve body. According to the pressure release valve with the adjustable pressure, the dismounting and mounting mechanism is arranged on the valve body, so that the check block is pressed into the empty groove, then the valve body can be dismounted from the valve body, the supporting plate can be separated from the rod body under the action of the cover body, and therefore the first spring can be dismounted and mounted conveniently; and therefore, the deformed or damaged spring can be replaced in time more conveniently, and the pressure of the valve plug can be adjusted to a stable state.

Description

Technical Field

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

[0002] As is known to all, a pressure relief valve refers to a valve that can be automatically opened and closed according to the working pressure of the system. It is generally installed on the equipment or pipeline of a closed system to protect the safety of the system. An adjustable pressure relief valve with the announcement number CN219035685U disclosed by the China Patent Network includes: a valve body; an adjusting nut, which is arranged on one side of the valve body and is threadedly connected to the valve body; a spring, which is abutted against the adjusting nut; a piston, which is abutted against the spring; a sealing gasket, which is detachably connected to the piston; a valve seat, which is arranged in the valve body and in contact with the piston; a gas channel, which is arranged in the valve seat; a sealing ring, which is arranged at the connection between the valve seat and the valve body. When the adjusting nut is fixed in position, the sealing gasket can be installed in the high-pressure relief to reduce the contact area between the piston and the gas and increase the inlet pressure of the pressure relief valve; when the pressure is low-pressure relief, the sealing gasket can be removed to increase the contact area between the piston and the gas and reduce the inlet pressure of the pressure relief valve.

[0003] However, when the existing pressure relief valve is in use, the valve plug is pressurized mainly by the force of the internal spring. When the spring is deformed or damaged, it will cause unstable pressure, so the spring needs to be replaced to maintain stable pressure. However, the existing technology is inconvenient when disassembling and replacing the spring in the pressure relief valve. For this reason, I propose a pressure relief valve with adjustable pressure. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure relief valve with adjustable pressure to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure relief valve with adjustable pressure, comprising: a valve body and a disassembly and assembly mechanism;

[0006] The valve body is sleeved with a cover body, the interior of the cover body is fixedly connected with a support plate, the interior of the support plate is slidably connected with a rod body, the bottom end of the rod body is fixedly connected with a valve plug, the rod body is sleeved with a first spring, the bottom end of the first spring is fixedly connected with the valve plug, and the top end of the first spring is tightly attached to the interior of the support plate;

[0007] The disassembly and assembly mechanism includes a fixed block fixedly connected to the outer side of the cover body and a support block fixedly connected to the outer side of the valve body, the top of the support block is fixedly connected to a plug rod, the interior of the fixed block is provided with a through hole for the plug rod to pass through, the interior of the plug rod is provided with an empty groove, the inner side wall of the empty groove is fixedly connected to a second spring, one end of the second spring is fixedly connected to a stopper, and the stopper is movably connected to the interior of the empty groove.

[0008] By adopting the above technical solution, under normal circumstances, the valve plug can close the channel of the valve body under the tensioning force of the first spring, and when the pressure in the valve body exceeds the set value, the valve plug can be pushed upward, so that the rod body can move upward in the support plate and squeeze the first spring, thereby releasing the pressure on one side of the valve body; in addition, when the first spring needs to be replaced, the stop block can be pressed into the empty groove to make the fixing block lose the force of being pressed, so that the cover body can be removed from the valve body, and then the first spring can be replaced after the support plate is removed from the rod body.

[0009] Preferably, a slide groove is provided on the inner top wall of the empty groove, and the top of the stopper is slidably connected to the inner side wall of the slide groove.

[0010] By adopting the above technical solution, the stopper can be kept stable when moving.

[0011] Preferably, a baffle is fixedly connected to the interior of the valve body, and a through groove for the rod to pass through is formed inside the baffle, and the through groove is adapted to the size of the valve plug.

[0012] By adopting the above technical solution, the valve plug can close the through groove after moving upward, thereby preventing the circulating liquid from affecting the first spring.

[0013] Preferably, a threaded groove is formed at the top of the rod body, a threaded rod is threadedly connected to the inner side wall of the threaded groove, and a connecting block is fixedly connected to the top of the threaded rod.

[0014] By adopting the above technical solution, the connecting block can prevent the rod body from being separated from the inside of the support plate, so that the valve plug can stably close the valve body channel under normal conditions.

[0015] Preferably, a slot is provided on the top of the connecting block.

[0016] By adopting the above technical solution, it is convenient to screw the connection block with a tool, so that when disassembling the support plate, the connection block and the threaded rod are first removed from the rod body, thereby facilitating the replacement of the first spring.

[0017] Preferably, a threaded hole is provided on the top of the cover body, a threaded column is threadedly connected to the inner side wall of the threaded hole, and a sealing cover is fixedly connected to the top end of the threaded column.

[0018] By adopting the above technical solution, the sealing cover can seal the top of the cover body under normal conditions, and when replacing the first spring, a tool can pass through the threaded hole and enter the slot of the connecting block to unscrew the threaded rod from the rod body.

[0019] Preferably, the outer side of the sealing cover is evenly and fixedly connected with equidistantly distributed protrusions.

[0020] By adopting the above technical solution, it is possible to easily screw the threaded column through the sealing cover.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] The adjustable pressure relief valve is provided with a disassembly and assembly mechanism on the valve body, so that the cover body can be removed from the valve body after the stop block is pressed into the empty groove, and the support plate can be separated from the rod body under the action of the cover body, thereby facilitating the disassembly and installation of the first spring; through the above arrangement, it is more convenient to replace the deformed or damaged spring in time, so that the pressure of the valve plug can be adjusted to a stable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the adjustable pressure relief valve of the utility model;

[0024] Figure 2 It is an enlarged schematic diagram of area A of the structural schematic diagram of the adjustable pressure relief valve of the utility model;

[0025] Figure 3 It is an enlarged schematic diagram of area B of the structural schematic diagram of the adjustable pressure relief valve of the utility model;

[0026] Figure 4 It is a structural schematic diagram of a sealing cover and a protrusion in the pressure-adjustable pressure relief valve of the utility model.

[0027] In the figure: 1. valve body; 10. cover body; 11. support plate; 12. rod body; 13. first spring; 14. valve plug; 15. baffle plate; 16. through groove; 17. threaded hole; 18. threaded column; 19. sealing cover; 101. protrusion; 102. threaded groove; 103. threaded rod; 104. connecting block; 105. slot; 2. disassembly and assembly mechanism; 20. fixing block; 21. through hole; 22. support block; 23. plug rod; 24. empty groove; 25. second spring; 26. baffle block; 27. slide groove. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-Figure 4 , the utility model provides a technical solution: a pressure relief valve with adjustable pressure, comprising: a valve body 1 and a disassembly mechanism 2;

[0030] Firstly, in order to enable the valve plug 14 to close the passage of the valve body 1 under the tensioning force of the first spring 13 under normal conditions, when the pressure in the valve body 1 exceeds the set value, the valve plug 14 can be pushed upward, so that the rod 12 can move upward in the support plate 11 and squeeze the first spring 13, thereby releasing the pressure on one side of the valve body 1; a cover body 10 is mounted on the valve body 1, the interior of the cover body 10 is fixedly connected to the support plate 11, the interior of the support plate 11 is slidably connected to the rod 12, the bottom end of the rod 12 is fixedly connected to the valve plug 14, the first spring 13 is mounted on the rod 12, the bottom end of the first spring 13 is fixedly connected to the valve plug 14, and the top end of the first spring 13 is tightly Attached to the inside of the support plate 11; in order to enable the valve plug 14 to close the through groove 16 after moving up, so as to prevent the circulating liquid from affecting the first spring 13, a baffle 15 is fixedly connected to the inside of the valve body 1, and a through groove 16 for the rod body 12 to pass through is provided inside the baffle 15, and the through groove 16 is adapted to the size of the valve plug 14; in order for the connecting block 104 to prevent the rod body 12 from detaching from the inside of the support plate 11, so that the valve plug 14 can stably close the valve body 1 channel under normal conditions, a threaded groove 102 is provided at the top of the rod body 12, and a threaded rod 103 is threadedly connected to the inner side wall of the threaded groove 102, and a connecting block 104 is fixedly connected to the top of the threaded rod 103;

[0031] Secondly, in order to replace the first spring 13 when it is necessary to replace the first spring 13, the fixing block 20 can be made to lose its tight force by pressing the stopper 26 into the empty groove 24, so that the cover body 10 can be removed from the valve body 1, and then the first spring 13 can be replaced after the support plate 11 is removed from the rod body 12; the disassembly and assembly mechanism 2 includes a fixing block 20 fixedly connected to the outer side of the cover body 10 and a supporting block 22 fixedly connected to the outer side of the valve body 1, the top of the supporting block 22 is fixedly connected to the plug rod 23, the interior of the fixing block 20 is provided with a through hole 21 for the plug rod 23 to pass through, the interior of the plug rod 23 is provided with an empty groove 24, the inner side wall of the empty groove 24 is fixedly connected to the second spring 25, one end of the second spring 25 is fixedly connected to the stopper 26, and the stopper 26 is movably connected to the inside of the empty groove 24; in order to keep the stopper 26 stable when moving, the inner top wall of the empty groove 24 is provided with a sliding groove 27 , the top of the stopper 26 is slidably connected to the inner side wall of the slide groove 27; in order to facilitate the use of a tool to twist the connecting block 104, so as to facilitate the removal of the connecting block 104 and the threaded rod 103 from the rod body 12 when disassembling the support plate 11, and then facilitate the replacement of the first spring 13, a slot 105 is provided on the top of the connecting block 104; in order to enable the sealing cover 19 to seal the top of the cover body 10 under normal conditions, and to enable the tool to pass through the threaded hole 17 and enter the slot 105 of the connecting block 104 to unscrew the threaded rod 103 from the rod body 12 when replacing the first spring 13, a threaded hole 17 is provided on the top of the cover body 10, and the inner side wall of the threaded hole 17 is threadedly connected with a threaded column 18, and the top of the threaded column 18 is fixedly connected with a sealing cover 19; in order to facilitate the twisting of the threaded column 18 through the sealing cover 19, the outer side of the sealing cover 19 is evenly and fixedly connected with equidistantly distributed protrusions 101.

[0032] The working steps of this scheme are summarized and sorted out according to the above technical scheme: when in use, under normal circumstances, the valve plug 14 can close the channel of the valve body 1 under the tensioning force of the first spring 13 and the limiting action of the connecting block 104. When the pressure in the valve body 1 exceeds the set value, the valve plug 14 can be pushed upward, so that the rod body 12 can move upward in the support plate 11 and squeeze the first spring 13, so that the pressure on one side of the valve body 1 can be released; in addition, when the first spring 13 needs to be replaced, the wrench can be passed through the threaded hole 17 and inserted into the slot 105 of the connecting block 104. When the connecting block 104 is removed from the rod body 12, the fixing block 20 can lose the force of being pressed by pressing the stopper 26 into the empty groove 24, so that the cover body 10 can be removed from the valve body 1 After the first spring 13 is removed from the rod body 12, the first spring 13 can be replaced; in addition, after the replaced first spring 13 is sleeved on the rod body 12, the cover body 10 can be sleeved on the valve body 1 first, so that the support block 22 can drive the plug 23 to pass through the through hole 21, and then the stopper 26 can be squeezed into the empty groove 24 and the fixing block 20 can be pressed against the support block 22 under the resetting action of the second spring 25, so that the cover body 10 can be stably installed on the valve body 1, and the support plate 11 can be sleeved on the rod body 12 and press the first spring 13, and then the connecting block 104 is fixed on the rod body 12 by tightening the threaded rod 103 in the threaded groove 102, so that the valve plug 14 can stably close the channel of the valve body 1 under the action of the first spring 13.

[0033] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pressure relief valve with adjustable pressure, characterized in that: include: Valve body (1) and disassembly mechanism (2); The valve body (1) is mounted with a cover body (10), the interior of the cover body (10) is fixedly connected with a support plate (11), the interior of the support plate (11) is slidably connected with a rod body (12), the bottom end of the rod body (12) is fixedly connected with a valve plug (14), a first spring (13) is mounted on the rod body (12), the bottom end of the first spring (13) is fixedly connected with the valve plug (14), and the top end of the first spring (13) is tightly attached to the interior of the support plate (11); The disassembly and assembly mechanism (2) comprises a fixed block (20) fixedly connected to the outer side of the cover body (10) and a support block (22) fixedly connected to the outer side of the valve body (1); a plug rod (23) is fixedly connected to the top of the support block (22); a through hole (21) is provided inside the fixed block (20) for the plug rod (23) to pass through; a slot (24) is provided inside the plug rod (23); a second spring (25) is fixedly connected to the inner side wall of the slot (24); one end of the second spring (25) is fixedly connected to a stopper (26); and the stopper (26) is movably connected inside the slot (24).

2. The adjustable pressure relief valve according to claim 1, characterized in that: The inner top wall of the empty slot (24) is provided with a slide slot (27), and the top of the stopper (26) is slidably connected to the inner side wall of the slide slot (27).

3. The adjustable pressure relief valve according to claim 1, characterized in that: A baffle (15) is fixedly connected to the interior of the valve body (1), and a through groove (16) for the rod body (12) to pass through is provided inside the baffle (15), and the through groove (16) is adapted to the size of the valve plug (14).

4. The adjustable pressure relief valve according to claim 1, characterized in that: A threaded groove (102) is formed at the top of the rod body (12); a threaded rod (103) is threadedly connected to the inner wall of the threaded groove (102); and a connecting block (104) is fixedly connected to the top of the threaded rod (103).

5. The adjustable pressure relief valve according to claim 4, characterized in that: A slot (105) is provided on the top of the connection block (104).

6. The adjustable pressure relief valve according to claim 1, characterized in that: A threaded hole (17) is provided at the top of the cover body (10); a threaded column (18) is threadedly connected to the inner wall of the threaded hole (17); and a sealing cover (19) is fixedly connected to the top of the threaded column (18).

7. The adjustable pressure relief valve according to claim 6, characterized in that: The outer side of the sealing cover (19) is evenly and fixedly connected with equidistantly distributed protrusions (101).

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