Dry powder valve with leak-proof structure
By introducing air core and inflatable screw cap into the dry powder valve, the problem of vulnerability or leakage of traditional fire extinguisher pressure indicators is solved, achieving safer and more reliable fire extinguisher maintenance and use.
Patent Information
- Application Number
- CN202422024320.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The pressure indicators of traditional fire extinguishers are prone to damage or leakage, resulting in unsafe maintenance.
A dry powder valve with an anti-leakage structure is designed. By setting an air core and an inflatable screw cap in the valve, it ensures that the air core can automatically block the gas outlet when the pressure gauge falls off or is damaged, prevent leakage, and reconnect the inside of the air cylinder through the inflatable device when necessary.
It effectively prevents leakage caused by damage to the pressure indicator, ensures the safety and reliability of the fire extinguisher, and avoids unsafe maintenance caused by leakage.
Smart Images
Figure CN222910860U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire extinguisher valves, in particular to a dry powder valve with a leakage prevention structure. Background Art
[0002] A fire extinguisher is a portable fire extinguishing tool. Chemical substances are placed inside the fire extinguisher to extinguish fires. Currently, the more mainstream fire extinguishers basically open the fire extinguisher by pressing the valve, so that the fire extinguishing substances (such as dry powder, special cleaning gas for fire extinguishing, etc.) in the fire extinguisher are ejected to achieve its fire extinguishing function.
[0003] Traditional fire extinguishers generally come with a pressure indicator. During the general assembly process, the pressure indicator may sometimes be damaged, defective, or have too high pressure during filling, etc. Moreover, unsafe factors will occur during the maintenance of the fire extinguisher.
[0004] For the above-mentioned traditional fire extinguishers, there may be a problem that the pressure indicator is damaged and leaks, resulting in unsafe factors during maintenance. Therefore, we propose a dry powder valve with a leakage prevention structure. Summary of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a dry powder valve with a leakage prevention structure, aiming to improve the problem that the pressure indicator is damaged and leaks, resulting in unsafe factors during maintenance.
[0006] To achieve the above object, the utility model provides the following technical solution: A dry powder valve with a leakage prevention structure, including a first valve body, a second valve body is arranged inside the first valve body, an inflation screw cap is arranged on one side of the second valve body, a second sealing flat gasket is arranged at the front end of the second valve body, an air core is arranged behind the second sealing flat gasket, a pressure gauge is fixedly connected to the other side of the second valve body, a nozzle is arranged at the front end of the first valve body, a lower lifting handle is arranged at the top of the first valve body, an upper lifting handle is arranged above the lower lifting handle, the lower lifting handle and the upper lifting handle are rotationally connected by a rivet, the bottom of the first valve body is fixedly connected to the top of a gas cylinder, a valve rod is arranged inside the first valve body, a first "O" - ring is arranged at the top of the valve rod, a gasket is fixedly connected to the bottom of the valve rod, a first sealing flat gasket is arranged at the bottom of the gasket, a valve rod cap is arranged at the bottom of the first sealing flat gasket, the bottom of the valve rod cap is fixedly connected to the top of a spring, the bottom of the spring is fixedly connected to the inner bottom of a riser base, a second "O" - ring is arranged at the lower part of the first valve body, and a screw ring is arranged on the outer ring of the second "O" - ring.
[0007] Preferably, a safety pin is arranged at a position of the lower lifting handle away from the rivet, and a pull - ring is fixedly connected to one end of the safety pin.
[0008] Preferably, a rubber chain is provided at the bottom of the pull ring, and the other end of the rubber chain is fixedly connected to the side surface of the lower lifting handle.
[0009] Preferably, a locking pin is provided at the other end of the safety pin, and the locking pin penetrates through the safety pin.
[0010] Preferably, the locking pin is made of soft rubber material, and barbs are provided on both sides near the end.
[0011] Preferably, the top of the valve stem is arc-shaped.
[0012] Preferably, a circular hole with the same size as the pull ring is provided at a position on the side wall of the upper lifting handle away from the rivet.
[0013] Preferably, the surfaces of the first valve body, the lower lifting handle, and the upper lifting handle should all be passivated and chrome-plated.
[0014] The utility model has the following beneficial effects:
[0015] 1. In the utility model, when the pressure gauge falls off due to aging or other reasons, the gas inside the gas cylinder will push the gas core to move, so that the gas core can move to the middle of the second valve body, thereby blocking the outlet of the internal gas to prevent leakage. When the air pressure inside the gas cylinder is insufficient and needs to be inflated, the inflation screw cap is pulled out, and the inflation device is inserted from the middle of the second sealing gasket, and then the gas core is continuously pushed so that the inside and outside are connected and the gas cylinder can be inflated. When the inflation is completed and the restart device is pulled out, the gas core will be blocked by the push of the gas inside the gas cylinder, thus improving the problem that the pressure indicator is damaged and leaks, resulting in unsafe factors in maintenance.
[0016] 2. In the utility model, when a small fire occurs, the safety pin can be pulled out from the inside of the lower lifting handle and the upper lifting handle through the pull ring. Since a rubber chain is connected inside the pull ring, the safety pin will not be lost. When the small fire is quickly extinguished, the safety pin can be inserted back into the inside of the lower lifting handle and the upper lifting handle, thus improving the problem that the safety pin is lost after extinguishing a small fire, making the fire extinguisher easily accidentally activated. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a perspective view of the dry powder valve with a leakage prevention structure proposed by the utility model;
[0018] Figure 2 is a sectional view of the dry powder valve with a leakage prevention structure proposed by the utility model;
[0019] Figure 3 is a front view of the dry powder valve with a leakage prevention structure proposed by the utility model;
[0020] Figure 4 Cross-sectional view at the second valve of the dry powder valve with a leakage prevention structure proposed by the present utility model.
[0021] Legend:
[0022] 1. Gas cylinder; 2. Pressure gauge; 3. First valve body; 4. Nozzle; 5. Rivet; 6. Lower lifting handle; 7. Upper lifting handle; 8. Safety pin; 9. Pin; 10. Rubber chain; 11. Pull ring; 12. First "O" - ring; 13. Valve stem; 14. Spring; 15. Spiral ring; 16. Standpipe seat; 17. Gasket; 18. First sealing flat gasket; 19. Valve stem cap; 20. Second "O" - ring; 21. Second valve body; 22. Inflation screw cap; 23. Second sealing flat gasket; 24. Gas core. Specific embodiments
[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0024] Refer to Figures 1-4, an embodiment provided by the utility model: a dry powder valve with a leakage prevention structure, including a first valve body 3. The first valve body 3 serves to connect the gas cylinder 1 and the upper lifting handle 7 and the lower lifting handle 6, and also serves to seal and output the gas inside the gas cylinder 1. A second valve body 21 is arranged inside the first valve body 3. The second valve body 21 serves to transfer the gas inside the gas cylinder 1 to the pressure gauge 2, so that the staff can more intuitively see the pressure value inside the gas cylinder 1. An inflation screw cap 22 is arranged on one side of the second valve body 21. The inflation screw cap 22 serves to protect the second valve body 21 and can also prevent accidental leakage. A second sealing flat gasket 23 is arranged at the front end of the second valve body 21. The second sealing flat gasket 23 serves to seal. A gas core 24 is arranged at the rear of the second sealing flat gasket 23. When there is a non-human-induced leakage risk, the gas outlet can be blocked in time through the gas core 24. When the air pressure inside the gas cylinder 1 is insufficient, pressurization can also be carried out through the gas core 24. A pressure gauge 2 is fixedly connected to the other side of the second valve body 21. The pressure gauge 2 serves to intuitively see the air pressure inside the gas cylinder 1. A nozzle 4 is arranged at the front end of the first valve body 3. Through the nozzle 4, the gas inside the gas cylinder 1 can be ejected. A lower lifting handle 6 is arranged at the top of the first valve body 3. An upper lifting handle 7 is arranged above the lower lifting handle 6. By squeezing the upper lifting handle 7 and the lower lifting handle 6, the gas inside the gas cylinder 1 can be ejected from the nozzle 4. The lower lifting handle 6 and the upper lifting handle 7 are rotatably connected by a rivet 5. Through the rivet 5, the upper lifting handle 7 and the lower lifting handle 6 can rotate freely. The bottom of the first valve body 3 is fixedly connected to the top of the gas cylinder 1. A valve rod 13 is arranged inside the first valve body 3. The valve rod 13 serves to connect the gasket 17. A first "O" - ring 12 is arranged at the top of the valve rod 13. The first "O" - ring 12 serves to seal. The bottom of the valve rod 13 is fixedly connected to a gasket 17. The gasket 17 serves to connect the first sealing flat gasket 18. A first sealing flat gasket 18 is arranged at the bottom of the gasket 17. The first sealing flat gasket 18 serves to seal. A valve rod cap 19 is arranged at the bottom of the first sealing flat gasket 18. The valve rod cap 19 serves to support the spring 14. The bottom of the valve rod cap 19 is fixedly connected to the top of the spring 14. When it is not necessary to spray fire extinguishing gas, the valve rod cap 19 can be periodically blocked by the spring 14 to seal the internal gas. The bottom of the spring 14 is fixedly connected to the inner bottom of the riser seat 16. The riser seat 16 serves to support the spring 14 and connect the gas cylinder 1. A second "O" - ring 20 is arranged at the lower part of the first valve body 3. The second "O" - ring 20 serves to further seal. A spiral ring 15 is arranged on the outer ring of the second "O" - ring 20. The spiral ring 15 serves to fix the second "O" - ring 20.
[0025] A safety pin 8 is arranged at a position of the lower lifting handle 6 far from the rivet 5. One end of the safety pin 8 is fixedly connected to a pull - ring 11. Through the pull - ring 11, the safety pin 8 can be pulled out more conveniently.
[0026] A rubber chain 10 is provided at the bottom of the pull ring 11, and the other end of the rubber chain 10 is fixedly connected to the side surface of the lower lifting and pressing handle 6. The pull ring 11 can be connected through the rubber chain 10 so that the pull ring 11 will not fall off when it is pulled out.
[0027] A pin 9 is provided at the other end of the safety pin 8, and the pin 9 penetrates through the safety pin 8. The pin 9 serves to fix the safety pin 8.
[0028] The pin 9 is made of soft rubber, and barbs are provided on both sides near the end. Since it is made of soft rubber, it can be directly pulled out through the pull ring 11 in an emergency, and the barbs can ensure that it will not accidentally fall off during storage.
[0029] The top of the valve stem 13 is arc-shaped, which is beneficial to the extrusion of the upper lifting and pressing handle 7 to quickly eject the fire extinguishing gas.
[0030] A round hole of the same size as the pull ring 11 is provided on the side wall of the upper lifting and pressing handle 7 away from the rivet 5. When long-term fire extinguishing is required, the safety pin 8 can be inserted into this hole to fix the jet state for the purpose of saving manpower.
[0031] The surfaces of the first valve body 3, the lower lifting and pressing handle 6, and the upper lifting and pressing handle 7 should all be passivated and chrome-plated, so that the structure can have better durability.
[0032] Working principle: When the fire extinguisher needs to be maintained, observe the indicated air pressure of the pressure gauge 2. When the air pressure is lower than the standard value, open the inflation screw cap 22 and insert the inflation device from inside the second sealing gasket 23, and then push the air core 24 so that the gas cylinder 1 is connected to the outside through the second valve body 21, and then the gas cylinder 1 can be inflated. After inflation is completed, when the inflation device is pulled out, the air core 24 will be pushed by the gas inside the gas cylinder 1 to block the internal and external channels to form a leak prevention. When a fire occurs, pull out the safety pin 8 through the pull ring 11, and then press down the upper lifting and pressing handle 7. Then, when the upper lifting and pressing handle 7 presses down the valve stem 13, the valve stem cap 19 compresses the spring 14, so that the gas cylinder 1 can be connected to the inside and outside through the first valve body 3. The gas inside the gas cylinder 1 will be ejected through the nozzle 4 to play a role in extinguishing the fire.
[0033] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A dry powder valve with an anti-leakage structure, comprising a first valve body (3), characterized in that A second valve body (21) is arranged inside the first valve body (3), an air-filled screw cover (22) is arranged on one side of the second valve body (21), a second sealing flat gasket (23) is arranged at the front end of the second valve body (21), an air core (24) is arranged at the rear of the second sealing flat gasket (23), a pressure gauge (2) is fixedly connected to the other side of the second valve body (21), a nozzle (4) is arranged at the front end of the first valve body (3), a lower lifting and pressing handle (6) is arranged at the top of the first valve body (3), an upper lifting and pressing handle (7) is arranged on the upper part of the lower lifting and pressing handle (6), the lower lifting and pressing handle (6) and the upper lifting and pressing handle (7) are rotatably connected by a rivet (5), and the bottom of the first valve body (3) is fixedly connected to the At the top of the gas cylinder (1), a valve stem (13) is arranged inside the first valve body (3), a first "O" ring (12) is arranged at the top of the valve stem (13), a gasket (17) is fixedly connected to the bottom of the valve stem (13), a first sealing flat gasket (18) is arranged at the bottom of the gasket (17), a valve stem cap (19) is arranged at the bottom of the first sealing flat gasket (18), the bottom of the valve stem cap (19) is fixedly connected to the top of the spring (14), the bottom of the spring (14) is fixedly connected to the inner bottom of the standpipe seat (16), a second "O" ring (20) is arranged at the lower part of the first valve body (3), and a spiral ring (15) is arranged on the outer ring of the second "O" ring (20).
2. The dry powder valve with anti-leakage structure according to claim 1, characterized in that A safety pin (8) is arranged at a position of the lower lifting and pressing handle (6) away from the rivet (5), and one end of the safety pin (8) is fixedly connected to a pull ring (11).
3. The dry powder valve with anti-leakage structure according to claim 2, characterized in that A rubber chain (10) is arranged at the bottom of the pull ring (11), and the other end of the rubber chain (10) is fixedly connected to the side of the lower lifting and pressing handle (6).
4. The dry powder valve with anti-leakage structure according to claim 2, characterized in that The other end of the safety pin (8) is provided with a locking pin (9), and the locking pin (9) passes through the safety pin (8).
5. The dry powder valve with anti-leakage structure according to claim 4, characterized in that The card pin (9) is made of soft rubber and has barbs on both sides near the end.
6. The dry powder valve with anti-leakage structure according to claim 1, characterized in that The top of the valve stem (13) is arc-shaped.
7. The dry powder valve with anti-leakage structure according to claim 1, characterized in that A circular hole of the same size as the pull ring (11) is provided on the side wall of the lifting and pressing handle (7) away from the rivet (5).
8. The dry powder valve with anti-leakage structure according to claim 1, characterized in that The surfaces of the first valve body (3), the lower lifting and pressing handle (6) and the upper lifting and pressing handle (7) should be passivated and chrome-plated.