Anti-explosion emergency cut-off valve

Abstract

The utility model relates to the technical field of emergency cut-off valves, and discloses an anti-explosion emergency cut-off valve which comprises a valve seat, an anti-explosion electromagnetic block is arranged at the top end of the valve seat, a handle is arranged at the top end in the anti-explosion electromagnetic block, a sliding block is movably arranged in a sliding groove, and one end of the sliding block is fixed to one end of a red card. According to the emergency cut-off valve, the red card and the green card are arranged and represent the opening state and the closing state of the emergency cut-off valve respectively, so that people can quickly know whether the emergency cut-off valve is in the opening state or the closing state through the display of the cards when standing far away; and the red card and the green card automatically display corresponding cards along with the movement of the movable iron core, so that people can know whether the valve is opened or closed more conveniently, and compared with the mode of displaying the opening and closing state of the valve in an electronic mode, more energy is saved, and more convenience is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency shut-off valves, in particular to an explosion-proof emergency shut-off valve. Background Art

[0002] The explosion-proof emergency shut-off valve is a switch-type valve that is commonly used in pipelines for gas and flammable and explosive materials. If the pipeline encounters an emergency, the emergency shut-off valve can quickly close the pipeline and self-lock to avoid accidents, thereby playing a certain protective role.

[0003] Traditional explosion-proof emergency shut-off valves, once installed and in use, typically display their open and closed status on an electronic display or text. Electronic displays consume a lot of power, and the text displayed on valves installed deep and difficult to reach is difficult to read, affecting the ability to determine the open and closed status of the valve. Therefore, we propose an explosion-proof emergency shut-off valve to address these issues. Utility Model Content

[0004] The purpose of the utility model is to provide an explosion-proof emergency shut-off valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an explosion-proof emergency shut-off valve, comprising a valve seat, an explosion-proof electromagnetic block is provided at the top of the valve seat, a handle is provided at the top of the interior of the explosion-proof electromagnetic block, a movable push rod is provided at the bottom end of the handle, and a movable iron core is provided at the bottom end of the movable push rod, a first spring is provided at the top end of the interior of the movable iron core, a piston rod is installed at the bottom end of the first spring, a valve plug is installed at the bottom end of the piston rod, a valve hole is provided inside the valve seat, a movable groove is provided at one end of the explosion-proof electromagnetic block, a movable block is movably provided inside the movable groove, and one end of the movable block is in contact with One end of the movable iron core is fixed, and a push rod is fixed on the right side of the moving block. A disc is provided on one side of the push rod, and the disc is fixed to one end of the outer wall of the explosion-proof electromagnetic block. One end of the disc is movably connected to a red card through a shaft, and a protrusion is fixed on one side of the shaft, and a green card is fixed on one side of the red card. A second spring is fixed to one end of the red card, and one end of the second spring is fixed to one end of the disc. A sliding groove is provided on one side of the second spring, and the sliding groove is fixed to one end of the disc. A sliding block is movably provided inside the sliding groove, and one end of the sliding block is fixed to one end of the red card.

[0006] Preferably, the cross section of the sliding block is smaller than the cross section of the sliding groove, and a sliding structure is formed between the sliding block and the sliding groove.

[0007] Preferably, the red card and the green card are both fan-shaped, and the red card and the green card are the same size.

[0008] Preferably, the size of the second spring is smaller than the distance between the sliding groove and the disc, and the second spring is annular in design.

[0009] Preferably, a metal disc is fixed to the bottom end of the valve plug, a magnetic sheet is provided at the bottom end of the metal disc, and the magnetic sheet is fixed to the top end of the valve hole.

[0010] Preferably, the metal disc and the magnetic sheet are both circular in design, and have the same size.

[0011] Preferably, a fixing seat is fixed to the top end of the interior of the valve seat, a sealing ring is fixed to the top end of the interior of the fixing seat, and a scraper ring is fixed to the bottom end of the interior of the fixing seat.

[0012] Preferably, the inner side wall of the scraper ring fits tightly against the outer side wall of the piston rod, and the scraper ring and the piston rod are adapted in size.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the explosion-proof emergency shut-off valve not only facilitates people to identify the open and closed states of the valve from a distance, achieves a stronger sealing performance of the valve when closed, but also realizes the cleaning of the piston rod;

[0014] (1) By providing a red card and a green card, the two colored cards represent the open and closed states of the emergency shut-off valve respectively. People standing at a distance can quickly know whether the emergency shut-off valve is open or closed by displaying the cards. Moreover, the red card and the green card display automatically display the corresponding cards following the movement of the movable iron core, making it easier for people to understand whether the valve is open or closed. Compared with displaying the valve switch state in electronic form, it is more energy-saving and convenient.

[0015] (2) A metal disc and a magnetic sheet are provided, and the metal disc and the magnetic sheet are fixed on the surface of the valve plug and the valve hole respectively. When the valve plug is inserted into the valve hole so that the emergency shut-off valve is in a closed state, the metal disc at the bottom of the valve plug and the magnetic sheet at the top of the valve hole are attracted together by magnetic force, so that the valve plug and the valve hole are tightly fitted together, thereby ensuring the sealing of the valve when it is closed;

[0016] (3) By providing components such as a fixed seat, a sealing ring and a scraper ring, when the emergency shut-off valve is in use, the piston rod will pull the valve plug to move up and down. During the process of the valve plug moving up and down, a scraper ring is fixed to the bottom end of the valve seat through the fixed seat. The scraper ring can scrape and clean the surface of the piston rod that moves up and down, preventing the piston rod from bringing impurities into the interior of the explosion-proof electromagnetic block and affecting its operation when it moves up and down, thereby realizing the valve has the function of cleaning the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0018] Figure 2 This is a front view structural diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the front view structure of the green card of the present utility model;

[0020] Figure 4 For the utility model Figure 1 Schematic diagram of the locally enlarged structure at point A in the middle.

[0021] In the figure: 1. Valve seat; 2. Movable push rod; 3. Handle; 4. Explosion-proof electromagnetic block; 5. Movable iron core; 6. First spring; 7. Piston rod; 8. Valve plug; 9. Metal disc; 10. Magnetic sheet; 11. Valve hole; 12. Moving block; 13. Moving groove; 14. Red card; 15. Disc; 16. Bump; 17. Push rod; 18. Green card; 19. Sliding groove; 20. Sliding block; 21. Second spring; 22. Fixed seat; 23. Sealing ring; 24. Scraper ring. DETAILED DESCRIPTION

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

[0023] Example 1: Please refer to Figure 1-4, an explosion-proof emergency shut-off valve, comprising a valve seat 1, an explosion-proof electromagnetic block 4 is provided at the top of the valve seat 1, a handle 3 is provided at the top inside the explosion-proof electromagnetic block 4, a movable push rod 2 is provided at the bottom end of the handle 3, and a movable iron core 5 is provided at the bottom end of the movable push rod 2, a first spring 6 is provided at the top inside the movable iron core 5, and a piston rod 7 is installed at the bottom end of the first spring 6, a valve plug 8 is installed at the bottom end of the piston rod 7, a valve hole 11 is provided inside the valve seat 1, a movable groove 13 is provided at one end of the explosion-proof electromagnetic block 4, a movable block 12 is movably provided inside the movable groove 13, and one end of the movable block 12 is fixed to one end of the movable iron core 5, a push rod 17 is fixed to the right side of the movable block 12, a disc 15 is provided on one side of the push rod 17, the disc 15 is fixed to one end of the outer wall of the explosion-proof electromagnetic block 4, one end of the disc 15 is movably connected to a red card 14 through a shaft, and a protrusion 16 is fixed on one side of the shaft, the red card 1 A green card 18 is fixed to one side of 4, and a second spring 21 is fixed to one end of the red card 14, and one end of the second spring 21 is fixed to one end of the disc 15, and a sliding groove 19 is provided on one side of the second spring 21, and the sliding groove 19 is fixed to one end of the disc 15, and a sliding block 20 is movably provided inside the sliding groove 19, and one end of the sliding block 20 is fixed to one end of the red card 14, the cross section of the sliding block 20 is smaller than the cross section of the sliding groove 19, and a sliding structure is formed between the sliding block 20 and the sliding groove 19, the red card 14 and the green card 18 are both fan-shaped, and the red card 14 and the green card 18 are the same size, which is convenient for driving the red card 14 and the green card 18 to switch back and forth according to the opening and closing of the valve, the size of the second spring 21 is smaller than the distance between the sliding groove 19 and the disc 15, and the second spring 21 is annular, which pulls the red card 14 for stable storage;

[0024] Specifically, if Figure 1 and Figure 3 As shown, when the movable iron core 5 moves downward, the movable iron core 5 will drive the moving block 12 to move from the top of the moving groove 13 to the bottom, so that the moving block 12 pushes the push rod 17 to move downward and pushes the red card 14 to rotate out from the inside of the disc 15 under the limit of the protrusion 16, and the green card 18 is collected. Later, people standing at a distance can quickly know that the valve is in the closed state, and after the subsequent movable iron core 5 pulls the valve plug 8 to move upward to open the valve hole 11, the moving block 12 at one end of the disc 15 will pull the push rod 17 to move upward. At this time, the protrusion 16 lacks the limit and the second spring 21 resets to pull the red card 14 back to the inside of the disc 15, so that the green card 18 is displayed, informing people that the valve is in the open state.

[0025] Embodiment 2: A metal disc 9 is fixed to the bottom end of the valve plug 8, and a magnetic sheet 10 is provided at the bottom end of the metal disc 9. The magnetic sheet 10 is fixed to the top end of the valve hole 11. The metal disc 9 and the magnetic sheet 10 are both circular in design and have the same size, so that the engagement between the valve plug 8 and the valve hole 11 is more stable.

[0026] Specifically, if Figure 1 As shown, when the piston rod 7 pushes the valve plug 8 to be inserted into the valve hole 11 inside the valve seat 1, the metal disc 9 at the bottom end of the valve plug 8 will be magnetically attracted to the magnetic sheet 10 at the top end of the valve hole 11, so that the valve plug 8 is more tightly sealed when inserted into the magnetic sheet 10.

[0027] Embodiment 3: A fixing seat 22 is fixed to the top of the valve seat 1, a sealing ring 23 is fixed to the top of the fixing seat 22, and a scraper ring 24 is fixed to the bottom of the fixing seat 22. The inner side wall of the scraper ring 24 fits tightly against the outer side wall of the piston rod 7. The scraper ring 24 is adapted to the size of the piston rod 7, and has a better cleaning effect on impurities on the surface of the piston rod 7.

[0028] Specifically, if Figure 1 and Figure 4 As shown, when the piston rod 7 pulls the valve plug 8 up and down, the scraper ring 24 will scrape and clean the surface of the piston rod 7 moving up and down to prevent impurities from adhering to the outer wall of the piston rod 7 and being brought into the interior of the explosion-proof electromagnetic block 4.

[0029] Working principle: When the utility model is in use, the emergency shut-off valve is installed in the corresponding position for use. When in use, the valve of the emergency shut-off valve is in the normally open state, and the explosion-proof electromagnetic block 4 is in the power-off state. When an accident occurs, the explosion-proof electromagnetic block 4 of the valve will be instantly energized, so that the explosion-proof electromagnetic block 4 generates a magnetic field, attracting the movable iron core 5 to move downward, pushing the valve plug 8 at one end of the piston rod 7 below to move downward and get stuck in the inside of the valve hole 11, so that the valve is quickly closed and is in a self-locking state. At the same time, when the movable iron core 5 moves downward, the movable iron core 5 will drive the moving block 12 to move from the top of the moving groove 13 to the bottom, so that the moving block 12 pushes the push rod 17 to move downward and, under the limit of the protrusion 16, the red card 14 is rotated out from the inside of the disc 15, and the green card 18 is collected. Later people can quickly know that the valve is in the closed state and the cut-off is completed while standing at a distance.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An explosion-proof emergency shut-off valve, comprising a valve seat (1), characterized in that: The top of the valve seat (1) is provided with an explosion-proof electromagnetic block (4), the top of the interior of the explosion-proof electromagnetic block (4) is provided with a handle (3), the bottom of the handle (3) is provided with a movable top rod (2), and the bottom of the movable top rod (2) is provided with a movable iron core (5), the top of the interior of the movable iron core (5) is provided with a first spring (6), and the bottom of the first spring (6) is installed with a piston rod (7), the bottom of the piston rod (7) is installed with a valve plug (8), the interior of the valve seat (1) is provided with a valve hole (11), one end of the explosion-proof electromagnetic block (4) is provided with a movable groove (13), the interior of the movable groove (13) is provided with a movable movable block (12), and one end of the movable block (12) is fixed to one end of the movable iron core (5), and a push rod ( 17), a disc (15) is provided on one side of the push rod (17), and the disc (15) is fixed to one end of the outer wall of the explosion-proof electromagnetic block (4), one end of the disc (15) is movably connected to a red card (14) through a shaft, and a protrusion (16) is fixed on one side of the shaft, a green card (18) is fixed on one side of the red card (14), a second spring (21) is fixed on one end of the red card (14), and one end of the second spring (21) is fixed to one end of the disc (15), a sliding groove (19) is provided on one side of the second spring (21), and the sliding groove (19) is fixed to one end of the disc (15), a sliding block (20) is movably provided inside the sliding groove (19), and one end of the sliding block (20) is fixed to one end of the red card (14).

2. The explosion-proof emergency shut-off valve according to claim 1, characterized in that: The cross section of the sliding block (20) is smaller than the cross section of the sliding groove (19), and a sliding structure is formed between the sliding block (20) and the sliding groove (19).

3. The explosion-proof emergency shut-off valve according to claim 1, characterized in that: The red card (14) and the green card (18) are both fan-shaped in design, and the red card (14) and the green card (18) are the same size.

4. The explosion-proof emergency shut-off valve according to claim 1, characterized in that: The size of the second spring (21) is smaller than the distance between the sliding groove (19) and the disc (15), and the second spring (21) is designed to be annular.

5. The explosion-proof emergency shut-off valve according to claim 1, characterized in that: A metal disc (9) is fixed to the bottom end of the valve plug (8), a magnetic sheet (10) is provided at the bottom end of the metal disc (9), and the magnetic sheet (10) is fixed to the top end of the valve hole (11).

6. The explosion-proof emergency shut-off valve according to claim 5, characterized in that: The metal disc (9) and the magnetic sheet (10) are both circular in design, and the metal disc (9) and the magnetic sheet (10) have the same size.

7. The explosion-proof emergency shut-off valve according to claim 1, characterized in that: A fixing seat (22) is fixed to the top end of the valve seat (1), a sealing ring (23) is fixed to the top end of the fixing seat (22), and a scraper ring (24) is fixed to the bottom end of the fixing seat (22).

8. The explosion-proof emergency shut-off valve according to claim 7, characterized in that: The inner side wall of the scraper ring (24) is tightly fitted to the outer side wall of the piston rod (7), and the scraper ring (24) is adapted to the size of the piston rod (7).

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