A corrosion-resistant safety valve

Abstract

The utility model discloses a corrosion-resistant safety valve, which relates to the technical field of valves. It comprises a valve body, one end of which is a feed port, and the other end of which is threadedly connected with a disassembly piece, and a discharge port is integrally formed on the outer wall of the valve body, and a support boss is fixedly installed on the outer wall of the valve body, and a valve core is movably installed inside the valve body and on the side of the support boss close to the disassembly piece, and a driving structure for driving the valve core to move is installed on the disassembly piece; a sealing liner is arranged on the side of the support boss close to the valve core, and the sealing liner is fixed on the supporting boss by a plurality of screws. By setting the disassembly piece to be threadedly connected to the valve body, the driving structure and the valve core can be removed by rotating the disassembly piece, so that it is convenient for the staff to replace the damaged sealing liner and the second sealing liner, so as to avoid leakage and improve the safety of the valve.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a corrosion-resistant safety valve. Background Art

[0002] Safety valve is a special device used for overpressure protection of pressure system. It is an automatic valve. When the system pressure reaches the set pressure, it does not rely on any external force, but uses the force of the medium itself to discharge a certain rated amount of fluid to prevent the pressure in the system from exceeding the predetermined safety value. When the pressure returns to normal, the valve will close again to prevent the medium from continuing to flow out;

[0003] For example, a corrosion-resistant lined safety valve disclosed in the prior art application number CN205715860U comprises a valve body, the upper part of which is connected to a valve cover; the lower part of the valve body is provided with a feed inlet, and the side part is provided with a discharge outlet; a baffle is provided between the valve cover and the valve body; a valve stem is vertically arranged in the valve cover, a spring is sleeved on the valve stem, a pressure seat is provided at the lower part of the valve stem, an impact section is provided at the lower part of the pressure seat, a steel ball is embedded in the impact section, and the pressure seat is pressed on the steel ball; the corrosion-resistant lined safety valve has the following beneficial effects: 1. When the valve stem is pressed down, the pressure seat is pressed on the steel ball, and the steel ball can balance the force of the spring, effectively preventing the spring from being balanced, and the downward pressure is balanced, and the valve disc seal is more stable; 2. A polytetrafluoroethylene layer is coated in the valve body, which effectively prevents corrosive liquids from corroding the valve body and prolongs the service life of the safety valve; 3. The special mechanism of the valve seat on the upper part of the spring ensures that the spring rises and presses down more stably;

[0004] It is known through actual use that the above-mentioned prior art mainly closes and switches the valve by contacting the valve core with the sealing lining of the valve body. As the use time of the valve body increases, the closing and opening of the valve will cause the sealing lining to wear, which can easily affect the sealing of the valve body. Since the valve body is integrally formed, it is not convenient to disassemble the valve core to replace the sealing lining, which will affect the safety of the valve. For this reason, we have improved the above-mentioned scheme according to actual usage. Utility Model Content

[0005] The utility model aims to provide a corrosion-resistant safety valve, which solves the technical problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a corrosion-resistant safety valve, comprising a valve body, one end of the valve body is a feed inlet, the other end of the valve body is threadedly connected with a disassembly piece, a discharge port is integrally formed on the outer wall of the valve body, a supporting boss is fixedly installed on the outer wall of the valve body, a valve core is movably installed inside the valve body and on one side of the supporting boss close to the disassembly piece, and a driving structure for driving the valve core to move is installed on the disassembly piece;

[0007] A sealing liner is arranged on one side of the supporting boss close to the valve core, and the sealing liner is fixed on the supporting boss by a plurality of screws.

[0008] Preferably, a second sealing liner is provided at one end of the valve core close to the supporting boss, and the second sealing liner is fixed to the valve core by a plurality of second screws.

[0009] Preferably, the second sealing liner and the outer surface of the sealing liner are coated with a corrosion-resistant coating.

[0010] Preferably, the driving structure includes a threaded hole, which is opened through the center of the disassembly part, and a threaded rod is threadedly connected inside the threaded hole, one end of the threaded rod movably extends into the inside of the valve body, and one end of the threaded rod is rotatably connected to the valve core.

[0011] Preferably, the other end of the threaded rod movably extends to the outside of the valve body, and the other end of the threaded rod is fixedly mounted with a handle.

[0012] Preferably, a second sealing component for improving the sealing performance of the valve body is provided inside the valve body between the feed inlet and the discharge outlet.

[0013] Preferably, the second sealing assembly includes a valve plate mounting seat, the valve plate mounting seat is integrally formed with the valve body, the inner cavity of the valve plate mounting seat is connected to the inner cavity of the valve body, the inner cavity of the valve plate mounting seat extends to the bottom of the valve body, and a valve plate is movably mounted inside the valve plate mounting seat.

[0014] Preferably, a screw is fixedly mounted on the upper end of the valve plate, a screw sleeve is threadedly sleeved on the outer wall of the screw, a mounting frame is rotatably connected to the lower end of the screw sleeve, the lower end of the mounting frame is fixedly mounted on the outer wall of the valve body, and a turntable is fixedly mounted on the outer wall of the screw sleeve.

[0015] Compared with the related art, the corrosion-resistant safety valve provided by the utility model has the following beneficial effects:

[0016] 1. The utility model provides a corrosion-resistant safety valve. By setting the disassembly part to be connected to the valve body in a threaded manner, the driving structure and the valve core can be removed by rotating the disassembly part, so that it is convenient for the staff to replace the damaged sealing liner and the second sealing liner, avoid leakage, and improve the safety of the valve.

[0017] 2. The utility model provides a corrosion-resistant safety valve, in which the second sealing lining is fixed to the valve core by a plurality of second screws, so that the second sealing lining can be easily disassembled and installed, and the staff can replace the worn second sealing lining conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the valve body of the utility model;

[0019] Figure 2 This is a schematic diagram of the inner cavity structure of the valve body of the utility model;

[0020] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 This is a schematic diagram of the disassembly component structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the valve core structure of the utility model;

[0023] Figure 6 It is a schematic structural diagram of the valve body of the utility model in an overall side view.

[0024] In the figure: 1. valve body; 2. feed inlet; 3. disassembly part; 4. drive structure; 41. threaded hole; 42. threaded rod; 43. handle; 5. discharge port; 6. second sealing assembly; 61. valve plate mounting seat; 62. valve plate; 63. screw; 64. screw sleeve; 65. mounting bracket; 66. turntable; 7. supporting boss; 8. sealing lining; 9. screw; 10. valve core; 11. second sealing lining; 12. second screw. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] Example:

[0027] See also Figure 1-Figure 6 The utility model provides a technical solution: a corrosion-resistant safety valve, comprising a valve body 1, one end of the valve body 1 is a feed port 2, the other end of the valve body 1 is threadedly connected with a disassembly part 3, an outer wall of the valve body 1 is integrally formed with a discharge port 5, a support boss 7 is fixedly installed on the inner wall of the valve body 1, a valve core 10 is movably installed inside the valve body 1 and on a side of the support boss 7 close to the disassembly part 3, and a driving structure 4 for driving the valve core 10 to move is installed on the disassembly part 3;

[0028] A sealing liner 8 is provided on one side of the support boss 7 close to the valve core 10. The sealing liner 8 is fixed to the support boss 7 by a plurality of screws 9, so that the sealing liner 8 can be easily disassembled and installed, and the staff can replace the worn sealing liner 8.

[0029] By setting the disassembly member 3 to be threadedly connected to the valve body 1, the driving structure 4 and the valve core 10 can be removed by rotating the disassembly member 3, so that it is convenient for the staff to replace the damaged sealing liner 8 and the second sealing liner 11, avoiding leakage and improving the safety of the valve;

[0030] When in use, the driving structure 4 can drive the valve core 10 to approach the supporting boss 7 so that the sealing liner 8 and the second sealing liner 11 are in contact with each other, thereby performing sealing.

[0031] In this embodiment, a second sealing lining 11 is provided at one end of the valve core 10 close to the supporting boss 7. The second sealing lining 11 is fixed to the valve core 10 by a plurality of second screws 12, which facilitates the disassembly and installation of the second sealing lining 11 and facilitates the staff to replace the worn second sealing lining 11.

[0032] In this embodiment, the outer surfaces of the second sealing liner 11 and the sealing liner 8 are coated with a corrosion-resistant coating, and the corrosion-resistant coating is polytetrafluoroethylene, which effectively prevents acidic or alkaline liquids from corroding the sealing liner 8 and the second sealing liner 11;

[0033] The driving structure 4 includes a threaded hole 41, which is opened through the center of the disassembly part 3. A threaded rod 42 is connected to the threaded hole 41. One end of the threaded rod 42 is movably extended to the inside of the valve body 1. One end of the threaded rod 42 is rotatably connected to the valve core 10. The other end of the threaded rod 42 is movably extended to the outside of the valve body 1. A handle 43 is fixedly installed on the other end of the threaded rod 42. When in use, the threaded rod 42 can be driven to rotate by rotating the handle 43. The threaded rod 42 cooperates with the threaded hole 41, so that the threaded rod 42 drives the valve core 10 to move to open and close.

[0034] A second sealing component 6 for improving the sealing performance of the valve body 1 is provided inside the valve body 1 between the feed port 2 and the discharge port 5. When in use, the second sealing component 6 can perform multiple sealing operations on the valve body 1 to improve the sealing performance of the valve body 1 and avoid leakage.

[0035] The second sealing component 6 includes a valve plate mounting seat 61, which is integrally formed with the valve body 1. The inner cavity of the valve plate mounting seat 61 is communicated with the inner cavity of the valve body 1, and the inner cavity of the valve plate mounting seat 61 extends to the bottom of the valve body 1. A valve plate 62 is movably mounted inside the valve plate mounting seat 61, and the valve plate 62 can slide along the inner cavity of the valve plate mounting seat 61 as a path. A screw 63 is fixedly mounted on the upper end of the valve plate 62, and a screw sleeve 64 is threadedly sleeved on the outer wall of the screw 63. The lower end of the screw sleeve 64 is rotatably connected to a mounting frame 65, and the lower end of the mounting frame 65 is fixedly mounted on the outer wall of the valve body 1, and a turntable 66 is fixedly mounted on the outer wall of the screw sleeve 64. When in use, the screw sleeve 64 can be driven to threadably cooperate with the screw 63 by rotating the turntable 66, thereby driving the screw 63 and the valve plate 62 to move along the inner cavity of the valve plate mounting seat 61 as a path. During maintenance work, the feed port 2 of the valve body 1 can be sealed, and the staff can be assisted in maintenance to avoid leakage.

[0036] Working principle:

[0037] When in use, the threaded rod 42 can be driven to rotate by rotating the handle 43. The threaded rod 42 cooperates with the threaded hole 41 so that the threaded rod 42 drives the valve core 10 to approach the supporting boss 7 so that the sealing liner 8 and the second sealing liner 11 are in contact to perform sealing.

[0038] By rotating the turntable 66, the threaded sleeve 64 can be driven to engage with the screw 63, thereby driving the screw 63 and the valve plate 62 to move along the inner cavity of the valve plate mounting seat 61. During maintenance work, the feed port 2 of the valve body 1 can be sealed to assist the staff in maintenance and avoid leakage.

[0039] 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 corrosion-resistant safety valve, comprising a valve body (1), one end of the valve body (1) being a feed inlet (2), characterized in that: The other end of the valve body (1) is threadedly connected to a disassembly member (3); a discharge port (5) is integrally formed on the outer wall of the valve body (1); a support boss (7) is fixedly mounted on the inner wall of the valve body (1); a valve core (10) is movably mounted inside the valve body (1) and on a side of the support boss (7) close to the disassembly member (3); and a driving structure (4) for driving the valve core (10) to move is mounted on the disassembly member (3); A sealing liner (8) is provided on one side of the support boss (7) close to the valve core (10), and the sealing liner (8) is fixed to the support boss (7) by means of a plurality of screws (9).

2. A corrosion-resistant safety valve according to claim 1, characterized in that: A second sealing liner (11) is provided at one end of the valve core (10) close to the supporting boss (7), and the second sealing liner (11) is fixed to the valve core (10) by means of a plurality of second screws (12).

3. A corrosion-resistant safety valve according to claim 2, characterized in that: The outer surfaces of the second sealing liner (11) and the sealing liner (8) are both coated with a corrosion-resistant coating.

4. A corrosion-resistant safety valve according to claim 1, characterized in that: The driving structure (4) comprises a threaded hole (41), the threaded hole (41) being opened through the center of the disassembly component (3), a threaded rod (42) being threadedly connected inside the threaded hole (41), one end of the threaded rod (42) movably extending into the interior of the valve body (1), and one end of the threaded rod (42) being rotatably connected to the valve core (10).

5. A corrosion-resistant safety valve according to claim 4, characterized in that: The other end of the threaded rod (42) movably extends to the outside of the valve body (1), and a handle (43) is fixedly mounted on the other end of the threaded rod (42).

6. A corrosion-resistant safety valve according to claim 5, characterized in that: A second sealing component (6) for improving the sealing performance of the valve body (1) is arranged inside the valve body (1) between the feed inlet (2) and the discharge outlet (5).

7. A corrosion-resistant safety valve according to claim 6, characterized in that: The second sealing assembly (6) comprises a valve plate mounting seat (61), the valve plate mounting seat (61) being integrally formed with the valve body (1), the inner cavity of the valve plate mounting seat (61) being connected to the inner cavity of the valve body (1), the inner cavity of the valve plate mounting seat (61) extending to the bottom of the valve body (1), and a valve plate (62) being movably mounted inside the valve plate mounting seat (61).

8. A corrosion-resistant safety valve according to claim 7, characterized in that: A screw rod (63) is fixedly mounted on the upper end of the valve plate (62); a screw sleeve (64) is threadedly sleeved on the outer wall of the screw rod (63); a mounting frame (65) is rotatably connected to the lower end of the screw sleeve (64); the lower end of the mounting frame (65) is fixedly mounted on the outer wall of the valve body (1); and a rotating disk (66) is fixedly mounted on the outer wall of the screw sleeve (64).

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