A bottle valve device based on air pressure self-locking

Abstract

The utility model discloses a bottle valve device based on air pressure self -locking, including valve body, the valve body lower extreme is equipped with the communication groove, the communication groove upper end is equipped with the discharge groove, and the discharge groove side is equipped with the discharge port, and the discharge groove upside sets up the cavity, and the communication groove inside slide connection spool, and the spool upper end installs valve rod, and the valve rod outer surface installs the moving plate, and the valve rod outer surface sets up spring no.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguisher valves, specifically to a bottle valve device based on air pressure self-locking. Background Technology

[0002] Fire extinguishers are crucial equipment for extinguishing initial fires, and their effectiveness highly depends on the rated pressure of the driving gas inside the cylinder. However, traditional valve designs have a fundamental safety flaw: when the pressure of the fire extinguisher is insufficient due to slow leakage, extreme temperatures, or lack of maintenance, the user can still operate the valve handle normally. In this case, the fire extinguisher can only release a trace amount of gas or extinguishing agent, failing to form an effective extinguishing jet, but the operation feels no different from normal operation. This "operational deception" misleads the user into believing that the equipment is functioning normally, seriously delaying the opportunity to extinguish the fire. Therefore, those skilled in the art have provided a cylinder valve device based on gas pressure self-locking to solve the problems mentioned in the background art. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a bottle valve device based on pneumatic self-locking, including a valve body. The lower end of the valve body has a connecting groove, the upper end of the connecting groove has a discharge groove, the side of the discharge groove has a discharge port, the upper side of the discharge groove has a cavity, the connecting groove has a valve core slidably connected inside, the upper end of the valve core has a valve stem installed, the outer surface of the valve stem has a movable plate installed, the outer surface of the valve stem has a spring sleeved on it, the lower end of the valve core has a self-locking mechanism installed, the side of the connecting groove has a vent hole, the inner wall of the vent hole has a rupture disc installed, and the vent hole has a protective cap installed inside.

[0004] Preferably, a handle is installed on the upper end of the valve body, and a pressure handle is rotatably connected to the upper end of the handle.

[0005] Preferably, the self-locking mechanism includes a push plate, a cavity, a slide groove, and a blocking block. The push plate is located on the lower side of the valve core, and the cavities are symmetrically arranged inside the valve core. A slider is slidably connected inside the cavity. A spring is installed at the upper end of the slider, and a solid rod is installed at the lower end of the slider. The solid rod passes through the lower end of the valve core and is fixedly connected to the push plate.

[0006] Preferably, the slide groove is symmetrically opened at the lower end of the valve core, the inner wall of the slide groove is symmetrically opened with limiting grooves, the slide groove is slidably connected with a groove block, the side of the groove block is symmetrically rotatably connected with a roller one, and the roller one contacts the bottom of the limiting groove, and the groove block is rotatably connected with several roller twos, and the roller two contacts the top of the slide groove.

[0007] Preferably, the recessed block is fitted with an extension block on its side, and the extension block passes through the side of the valve core. The lower end of the extension block is slidably fitted with a blocking block, and the blocking block is fixed to the inner wall of the communicating groove. The lower end of the recessed block is rotatably connected to a connecting rod, and one end of the connecting rod is rotatably connected to the upper end of the push plate.

[0008] The technical effects and advantages of this utility model are as follows:

[0009] This invention uses a blocking block to prevent the protruding block from extending, thus preventing the valve core from descending when pressure is lost. This forcibly prevents users from operating fire extinguishers with insufficient pressure, fundamentally solving the major safety hazard of misuse of "ineffective fire extinguishers". Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this application;

[0011] Figure 2 This is a schematic diagram of the valve body of this application;

[0012] Figure 3 This is a schematic diagram of the cavity structure of this application;

[0013] Figure 4 This is a schematic diagram of the groove block in this application;

[0014] In the picture:

[0015] 1. Valve body; 2. Lifting handle; 3. Pressure handle; 4. Connecting groove; 5. Discharge groove; 6. Cavity; 7. Valve stem; 8. Moving plate; 9. Spring 1;

[0016] 10. Valve core; 11. Self-locking mechanism; 12. Push plate; 13. Cavity; 14. Slider; 15. Spring II; 16. Solid rod; 17. Slide groove; 18. Limiting groove; 19. Groove block;

[0017] 20. Roller 1; 21. Roller 2; 22. Extending block; 23. Connecting rod; 24. Blocking block; 25. Vent hole; 26. Rupture disc; 27. Protective cap; 28. Discharge port. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0019] like Figures 1-4As shown, this embodiment provides a bottle valve device based on pneumatic self-locking, including a valve body 1. A handle 2 is installed on the upper end of the valve body 1, and a pressure handle 3 is rotatably connected to the upper end of the handle 2. A connecting groove 4 is opened at the lower end of the valve body 1, and a discharge groove 5 is opened at the upper end of the connecting groove 4. A discharge outlet 28 is opened on the side of the discharge groove 5, and a cavity 6 is provided on the upper side of the discharge groove 5. A valve core 10 is slidably connected inside the connecting groove 4. A valve stem 7 is installed on the upper end of the valve core 10, and the valve stem 7 passes through the cavity 6 and the valve body 1. A movable plate 8 is installed on the outer surface of the valve stem 7, and the movable plate 8 is located inside the cavity 6. A spring 9 is sleeved on the outer surface of the valve stem 7, and the spring 9 is located inside the cavity 6. A self-locking mechanism 11 is installed at the lower end of the valve core 10. The self-locking mechanism 11 includes a push plate 12, a cavity 13, a slide groove 17, and a blocking block 24. The push plate 12 is located on the lower side of the valve core 10. The cavities 13 are symmetrically arranged inside the valve core 10. A slider 14 is slidably connected inside the cavity 13. A spring 14 is installed on the upper end of the slider 14. 5. A solid rod 16 is installed at the lower end of the slider 14, and the solid rod 16 passes through the lower end of the valve core 10 and is fixedly connected to the push plate 12. A slide groove 17 is symmetrically opened at the lower end of the valve core 10. A limiting groove 18 is symmetrically opened on the inner wall of the slide groove 17. A groove block 19 is slidably connected inside the slide groove 17. A roller 20 is symmetrically rotatably connected to the side of the groove block 19, and the roller 20 contacts the bottom of the limiting groove 18. Several rollers 21 are rotatably connected inside the groove block 19, and the rollers 21 contact the bottom of the limiting groove 18. Inside the top of the groove 17, a protruding block 22 is installed on the side of the groove block 19, and the protruding block 22 passes through the side of the valve core 10. The lower end of the protruding block 22 is slidably engaged with the blocking block 24, and the blocking block 24 is fixed to the inner wall of the connecting groove 4. The lower end of the groove block 19 is rotatably connected to the connecting rod 23, and one end of the connecting rod 23 is rotatably connected to the upper end of the push plate 12. A vent hole 25 is opened on the side of the connecting groove 4. A rupture disc 26 is installed on the inner wall of the vent hole 25, and a protective cap 27 is set inside the vent hole 25.

[0020] The working principle of this utility model is as follows: When the internal pressure of the bottle is normal, the force of the internal pressure acting on the push plate 12 exceeds the force of the second spring 15, causing the push plate 12 to rise and drive the solid rod 16 and the slider 14 to rise. The slider 14 rises and compresses the second spring 15. At the same time, the push plate 12 pushes the groove block 19 to move towards the center position of the valve core 10 in the slide groove 17 through the connecting rod 23. The groove block 19 moves smoothly through the first roller 20 and the second roller 21. At the same time, the groove block 19 drives the protruding block 22 to retract into the valve core 10. At this time, the pressure handle 3 and the valve rod 7 can push the valve core 10 to descend normally and release the fire extinguishing agent.

[0021] When the internal pressure of the bottle drops below the safety threshold, the force of spring 15 exceeds the force exerted by the internal pressure on the push plate 12, causing spring 15 to push the slider 14 and solid rod 16 to descend. Solid rod 16 pushes push plate 12 to descend. Push plate 12 drives groove block 19 to move outward of valve core 10 through connecting rod 23. Groove block 19 drives extension block 22 to move outward and extend from valve core 10, which is stuck at the upper end of blocking block 24. Blocking block 24 blocks extension block 22, preventing valve core 10 from descending under pressure loss, thereby forcibly preventing users from using a malfunctioning (insufficient pressure) fire extinguisher.

[0022] Under normal operating pressure: the rupture disc 26 withstands pressure and remains sealed. When overpressure occurs: when the internal pressure reaches the preset burst pressure, the rupture disc 26 ruptures instantly, forming a vent. The high-pressure gas / extinguishing agent mixture is safely discharged through the vent hole 25, rapidly reducing the internal pressure.

[0023] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A bottle valve device based on pneumatic self-locking, comprising a valve body (1), characterized in that, The valve body (1) has a connecting groove (4) at the lower end, a discharge groove (5) at the upper end of the connecting groove (4), a discharge port (28) on the side of the discharge groove (5), a cavity (6) on the upper side of the discharge groove (5), a valve core (10) is slidably connected inside the connecting groove (4), a valve stem (7) is installed at the upper end of the valve core (10), a moving plate (8) is installed on the outer surface of the valve stem (7), a spring (9) is sleeved on the outer surface of the valve stem (7), a self-locking mechanism (11) is installed at the lower end of the valve core (10), a vent hole (25) is opened on the side of the connecting groove (4), a rupture disc (26) is installed on the inner wall of the vent hole (25), and a protective cap (27) is installed inside the vent hole (25).

2. The bottle valve device based on pneumatic self-locking according to claim 1, characterized in that, The valve body (1) has a handle (2) installed on its upper end, and the handle (2) is rotatably connected to a pressure handle (3).

3. The bottle valve device based on pneumatic self-locking according to claim 1, characterized in that, The self-locking mechanism (11) includes a push plate (12), a cavity (13), a slide groove (17), and a blocking block (24). The push plate (12) is located on the lower side of the valve core (10). The cavity (13) is symmetrically located inside the valve core (10). The slide block (14) is slidably connected inside the cavity (13). A spring (15) is installed on the upper end of the slide block (14). A solid rod (16) is installed on the lower end of the slide block (14). The solid rod (16) passes through the lower end of the valve core (10) and is fixedly connected to the push plate (12).

4. A bottle valve device based on pneumatic self-locking according to claim 3, characterized in that, The slide groove (17) is symmetrically opened at the lower end of the valve core (10). The inner wall of the slide groove (17) is symmetrically opened with a limiting groove (18). The slide groove (17) is slidably connected to the groove block (19). The side of the groove block (19) is symmetrically connected to the first roller (20), and the first roller (20) contacts the bottom of the limiting groove (18). The groove block (19) is slidably connected to several second rollers (21), and the second rollers (21) contact the top of the slide groove (17).

5. A bottle valve device based on pneumatic self-locking according to claim 4, characterized in that, The groove block (19) has an extension block (22) installed on its side, and the extension block (22) passes through the side of the valve core (10). The lower end of the extension block (22) is slidably fitted with a blocking block (24), and the blocking block (24) is fixed to the inner wall of the connecting groove (4). The lower end of the groove block (19) is rotatably connected to a connecting rod (23), and one end of the connecting rod (23) is rotatably connected to the upper end of the push plate (12).

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