Explosion-proof ball valve with spring convenient to replace

Abstract

The utility model provides an anti-explosion ball valve with a spring convenient to replace, which solves the problem that the anti-explosion effect of the ball valve is invalid because the elasticity of the spring is reduced due to aging and the like and the spring cannot be replaced. The anti-explosion ball valve facilitating spring replacement comprises a valve body, an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are fixedly arranged on the valve body, an anti-explosion pipe is fixedly arranged on the air inlet pipe, a sealing cover is arranged at the top of the anti-explosion pipe, two mounting blocks are symmetrically arranged at the bottom of the sealing cover, positioning grooves are formed in the mounting blocks, and two mounting grooves are symmetrically formed in the top end of the anti-explosion pipe. The anti-explosion ball valve has the advantages that the sealing cover on the anti-explosion pipe can be conveniently disassembled and assembled, after the anti-explosion ball valve is used for a long time, the sealing cover can be disassembled to replace the second spring in the anti-explosion pipe, and the situation that the anti-explosion effect of the ball valve fails due to the fact that the elastic force of the second spring is reduced is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valves and relates to an explosion-proof ball valve which is convenient for replacing a spring, in particular to an explosion-proof ball valve which is convenient for replacing a spring. Background Art

[0002] Ball valve, the opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. The hard-sealed V-type ball valve has a strong shear force between its V-type ball core and the metal valve seat with hard alloy surfacing. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium on the pipeline, but also close any channel to connect the other two channels. Ball valves are divided into pneumatic ball valves, electric ball valves, and manual ball valves according to the driving method.

[0003] After searching, a pneumatic explosion-proof ball valve with the announcement number CN214404830U was disclosed in the China Patent Network. When in use, the pneumatic explosion-proof ball valve can adjust the air pressure inside the valve body to prevent the ball valve from exploding, and improve the sealing of the valve, so that the valve will not leak, reducing safety hazards.

[0004] However, the above patent still has the following problems: after long-term use, the elastic force of the spring will decrease due to aging and other reasons, and the spring cannot be replaced, which will cause the explosion-proof effect of the ball valve to fail. Therefore, it is of great significance to design an explosion-proof ball valve that is easy to replace the spring. Summary of the invention

[0005] The utility model aims to solve the above problems in the prior art and provides an explosion-proof ball valve which is convenient for spring replacement.

[0006] The purpose of the utility model can be achieved through the following technical solutions: an explosion-proof ball valve that is easy to replace a spring, characterized in that it includes a valve body and an air inlet pipe and an air outlet pipe fixedly arranged on the valve body, an explosion-proof pipe is fixedly arranged on the air inlet pipe, a sealing cover is arranged on the top of the explosion-proof pipe, two mounting blocks are symmetrically arranged on the bottom of the sealing cover, a positioning groove is arranged on the mounting block, two mounting grooves are symmetrically arranged on the top of the explosion-proof pipe, two shells are symmetrically arranged on the explosion-proof pipe, a positioning block is movably arranged between the shell and the mounting groove, and a spring is arranged between the positioning block and the shell.

[0007] In the above-mentioned explosion-proof ball valve that is easy to replace the spring, the mounting block is provided with an extrusion portion, and the positioning block is provided with a pressure-bearing portion used in conjunction with the extrusion portion.

[0008] In the above-mentioned explosion-proof ball valve that is easy to replace the spring, a toggle block is fixedly arranged on the positioning block, and a slide groove used in conjunction with the toggle block is arranged on the housing.

[0009] In the above-mentioned explosion-proof ball valve which is convenient for spring replacement, a connecting rod is fixedly arranged inside the explosion-proof pipe, and a plurality of exhaust holes are arranged on the explosion-proof pipe.

[0010] In the above-mentioned explosion-proof ball valve which is easy to replace the spring, a plurality of support rods are fixedly arranged on the connecting rod, a sealing plate is arranged on the support rod, a second spring is arranged on the sealing plate, and the second spring is sleeved on the support rod.

[0011] Compared with the prior art, the explosion-proof ball valve with easy spring replacement is convenient for disassembly and installation of the sealing cover on the explosion-proof pipe. After long-term use, the sealing cover can be removed to replace the spring 2 in the explosion-proof pipe, thereby reducing the situation in which the explosion-proof effect of the ball valve fails due to the decrease in the elastic force of the spring 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the explosion-proof ball valve which is convenient for spring replacement;

[0013] Figure 2 This is a structural schematic diagram of an explosion-proof ball valve explosion-proof pipe that is easy to replace the spring;

[0014] Figure 3 This is an explosion-proof ball valve that is easy to replace the spring. Figure 2 Schematic diagram of the structure at point A in the middle.

[0015] In the figure, 1. valve body; 2. air inlet pipe; 3. air outlet pipe; 4. explosion-proof pipe; 5. sealing cover; 6. mounting block; 7. positioning groove; 8. mounting groove; 9. shell; 10. positioning block; 11. spring one; 12. extrusion part; 13. pressure-bearing part; 14. toggle block; 15. slide groove; 16. connecting rod; 17. exhaust hole; 18. support rod; 19. blocking plate; 20. spring two. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0017] like Figure 1 , 2As shown in Figure 3, the explosion-proof ball valve which is easy to replace the spring comprises a valve body 1 and an air inlet pipe 2 and an air outlet pipe 3 fixedly arranged on the valve body 1, an explosion-proof pipe 4 is fixedly arranged on the air inlet pipe 2, a sealing cover 5 is arranged on the top of the explosion-proof pipe 4, two mounting blocks 6 are symmetrically arranged on the bottom of the sealing cover 5, a positioning groove 7 is arranged on the mounting block 6, two mounting grooves 8 are symmetrically arranged on the top of the explosion-proof pipe 4, two shells 9 are symmetrically arranged on the explosion-proof pipe 4, a positioning block 10 is movably arranged between the shell 9 and the mounting groove 8, and the positioning block 10 is symmetrical to the shell 9 A spring 11 is arranged between them. After long-term use, the top of the positioning block 10 is disengaged from the positioning groove 7 by using the toggle block 14, and then the sealing cover 5 can be removed and the spring 20 can be replaced. After the replacement is completed, the mounting block 6 is aligned with the mounting groove 8, and the sealing plate is pressed. The mounting block 6 will squeeze the positioning block 10, and then the positioning block 10 can be clamped in the positioning groove 7 on the mounting block 6 in cooperation with the spring 11, so as to achieve the installation and positioning of the sealing cover 5.

[0018] Preferably, the positioning block 10 is provided with a pressure-bearing portion 13 used in conjunction with the extrusion portion 12. When installing the sealing plate, the positioning block 10 can retract by itself through the contact and extrusion of the extrusion portion 12 and the pressure-bearing portion 13, and then rebound into the positioning groove 7, and the installation can be completed without using the toggle block 14.

[0019] Preferably, a toggle block 14 is fixedly provided on the positioning block 10, and a slide groove 15 used in conjunction with the toggle block 14 is provided on the housing 9. When replacing the spring 20, the toggle block 14 needs to be used to retract the positioning block 10, and then the sealing cover 5 is disassembled.

[0020] Preferably, a connecting rod 16 is fixedly provided inside the explosion-proof tube 4, and a plurality of exhaust holes 17 are provided on the explosion-proof tube 4, and the exhaust holes 17 are used to discharge the air pressure generated by the explosion out of the device.

[0021] Preferably, a plurality of support rods 18 are fixedly provided on the connecting rod 16, a sealing plate 19 is provided on the support rod 18, a spring 20 is provided on the sealing plate 19, and the spring 20 is sleeved on the support rod 18. When an explosion occurs inside the pneumatic explosion-proof ball valve, the air pressure generated by the explosion will push the sealing plate 19 upward. When the position of the sealing plate 19 exceeds the position of the exhaust hole 17, the gas generated by the explosion will be discharged from the device through the exhaust hole 17. When the air pressure inside the pneumatic explosion-proof ball valve returns to stability, the sealing plate 19 will be pushed back to its original position by the spring 20, so that the device is in a sealed state again. The user can install multiple springs 20 in the explosion-proof tube 4 according to actual usage to achieve a better explosion-proof effect.

[0022] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0023] Although this article uses more terms such as valve body 1, air inlet pipe 2, air outlet pipe 3, explosion-proof pipe 4, sealing cover 5, mounting block 6, positioning groove 7, mounting groove 8, housing 9, positioning block 10, spring 1 11, extrusion part 12, pressure-bearing part 13, toggle block 14, slide 15, connecting rod 16, exhaust hole 17, support rod 18, blocking plate 19, spring 2 20, etc., it does not exclude the possibility of using other terms. The use of these terms is only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An explosion-proof ball valve that is easy to replace the spring, characterized in that: The invention comprises a valve body (1), and an air inlet pipe (2) and an air outlet pipe (3) fixedly arranged on the valve body (1); an explosion-proof pipe (4) is fixedly arranged on the air inlet pipe (2); a sealing cover (5) is arranged on the top of the explosion-proof pipe (4); two mounting blocks (6) are symmetrically arranged on the bottom of the sealing cover (5); a positioning groove (7) is arranged on the mounting block (6); two mounting grooves (8) are symmetrically arranged on the top of the explosion-proof pipe (4); two shells (9) are symmetrically arranged on the explosion-proof pipe (4); a positioning block (10) is movably arranged between the shell (9) and the mounting groove (8); and a spring (11) is arranged between the positioning block (10) and the shell (9).

2. The explosion-proof ball valve for easy spring replacement according to claim 1, characterized in that: The mounting block (6) is provided with an extrusion portion (12), and the positioning block (10) is provided with a pressure-bearing portion (13) used in conjunction with the extrusion portion (12).

3. The explosion-proof ball valve for easy spring replacement according to claim 1, characterized in that: A toggle block (14) is fixedly arranged on the positioning block (10), and a slide groove (15) for use with the toggle block (14) is arranged on the housing (9).

4. The explosion-proof ball valve for easy spring replacement according to claim 1, characterized in that: A connecting rod (16) is fixedly arranged inside the explosion-proof tube (4), and a plurality of exhaust holes (17) are arranged on the explosion-proof tube (4).

5. The explosion-proof ball valve for easy spring replacement according to claim 4, characterized in that: A plurality of support rods (18) are fixedly arranged on the connecting rod (16), a blocking plate (19) is arranged on the support rod (18), a second spring (20) is arranged on the blocking plate (19), and the second spring (20) is sleeved on the support rod (18).

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