Valve structure of carbon fiber fire extinguisher

Abstract

The utility model discloses a valve structure of a carbon fiber fire extinguisher. The fire extinguisher comprises a valve body, the top of the valve body is provided with a fire extinguisher bottle opening, the bottom of the valve body is provided with a connector, the inner side of the connector is provided with a feeding channel, the outer side wall of the connector is provided with an external thread area, the outer edge of a port of the connector is provided with an annular inclined guide face, and the annular inclined guide face inclines towards the inner side of the connector from the bottom of the connector to the port of the connector. A sealing extrusion ring is further fixed to the annular inclined guide face, the feeding channel is located on the inner side of the sealing extrusion ring, a first annular turned edge matched with a port of the connector is further fixed to the inner side wall of the fire extinguisher bottle opening, and an annular inclined pressing face matched with the annular inclined guide face is fixed to the face, right opposite to the connector, of the first annular turned edge. The annular inclined guide face is parallel to the annular inclined pressing face, and the sealing extrusion ring is arranged between the annular inclined guide face and the annular inclined pressing face. The connecting structure has the beneficial effects that the connecting sealing performance is good, and the stability is high; the fire extinguishing efficiency and the spraying efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of fire extinguishers, and in particular to a valve structure for a carbon fiber fire extinguisher. Background Technology

[0002] A fire extinguisher is a portable fire-fighting tool. It contains chemicals used to extinguish fires. Fire extinguishers are common fire-fighting equipment, stored in public places or areas where fires may occur. Different types of fire extinguishers contain different components and are designed for different types of fires. Commonly used fire extinguishers include foam, dry powder, acid / alkali, CO2, and 1211. The body of a fire extinguisher is usually red and printed with its name, model, extinguishing type and capacity, extinguishing agent, and the type and quantity of propellant gas, along with text and pictures explaining how to use it. A fire extinguisher consists of a cylinder, head, nozzle, and other components. It uses propellant pressure to spray the extinguishing agent, achieving the purpose of extinguishing the fire.

[0003] During long-term storage, existing fire extinguishers are prone to leakage at the connection between the valve body and the cylinder due to the aging and loosening of the sealing ring, which affects the service life of the fire extinguisher.

[0004] In summary, there is a current need for a valve structure in carbon fiber fire extinguishers that can improve connection sealing. Utility Model Content

[0005] This invention aims to overcome the shortcomings of existing fire extinguishers where leakage occurs at the connection between the valve body and the cylinder due to the aging and loosening of the sealing ring during long-term storage, thus affecting the service life of the fire extinguisher. It provides a valve structure for a carbon fiber fire extinguisher that can improve the connection sealing performance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A carbon fiber fire extinguisher structure includes a valve body, a fire extinguisher nozzle at the top of the cylinder, a connector at the bottom of the valve body, a feeding channel on the inner side of the connector, an external threaded area on the outer side wall of the connector, an annular inclined guide surface at the outer edge of the connector port, the annular inclined guide surface sloping inward from the bottom of the connector to the connector port, a sealing compression ring fixed on the annular inclined guide surface, the feeding channel located inside the sealing compression ring, an annular flange matching the connector port fixed on the inner side wall of the fire extinguisher nozzle, an annular inclined pressure surface matching the annular inclined guide surface fixed on the side of the annular flange facing the connector, the annular inclined guide surface and the annular inclined pressure surface being parallel, and the sealing compression ring positioned between the annular inclined guide surface and the annular inclined pressure surface.

[0008] The valve body connector is threaded to the fire extinguisher bottle neck via an external threaded area. This connection method is simple and easy to operate, facilitating installation and disassembly, reducing the difficulty of later maintenance and repair, and ensuring good sealing and strong stability. The design of the annular inclined guide surface improves the smoothness of the connector's insertion into the fire extinguisher bottle neck, making operation simple, convenient, and time-saving. An annular inclined pressure surface is provided inside the fire extinguisher bottle neck. A sealing compression ring seals between the annular inclined guide surface and the annular inclined pressure surface, improving the sealing effect between the connector and the fire extinguisher bottle neck, preventing leakage, and extending the service life of the fire extinguisher. When the connector is tightened inside the fire extinguisher bottle neck, the sealing compression ring presses precisely between the annular inclined guide surface and the annular inclined pressure surface, further enhancing the sealing effect.

[0009] Preferably, the valve body has an internal valve cavity, the feed channel is located below the valve cavity, and the valve cavity and the feed channel are connected by a guide hole. A valve stem is mounted on the valve body, the bottom end of the valve stem passes through the guide hole and is placed inside the feed channel, the diameter of the valve stem is smaller than the diameter of the guide hole, a valve stem through hole is provided on the top surface of the valve cavity, and the top end of the valve stem passes through the valve stem through hole and is placed outside the valve body, the valve stem and the valve stem through hole are sealed and slidably connected, and a valve core matching the guide hole is fixed at the bottom end of the valve stem, the width of the valve core being... The valve body has a pressure handle mounted on its top, and a lifting handle fixed to its side wall. One end of the pressure handle is hinged to the valve body, and the other end of the pressure handle is located above the lifting handle. The top end of the valve stem is located below the pressure handle and in contact with it. A safety pin is installed between the pressure handle and the lifting handle. An annular flange and a spring are fixed to the inner side wall of the feed channel. The spring is positioned between the valve core and the annular flange, with its top end connected to the valve core and its bottom end resting on the annular flange. The configuration of the pressure handle, lifting handle, and safety pin is known to those skilled in the art and will not be described in detail further. When not in use, the handle is locked, and the valve core is sealed at the feed hole by the spring force, keeping the inside of the bottle sealed. When in use, first remove the safety pin to unlock the handle, then press the handle down to move the valve stem and valve core downward, causing the valve core to disengage from the feed hole and open it. At this time, the extinguishing medium inside the bottle will be automatically sprayed out through the feed hole with the high-pressure airflow. The structure is simple and the operation is convenient.

[0010] Preferably, the top of the valve core is adapted to the feed guide hole, and the bottom of the valve core is conical in shape. The top of the spring is sleeved on the bottom of the valve core. The conical design of the valve core top can guide the ejected high-pressure airflow and extinguishing medium, reduce wind noise, increase flow velocity, and improve extinguishing efficiency.

[0011] Preferably, an annular guide slope one is provided on the side of the annular flange one away from the valve cavity, and the annular guide slope one slopes from bottom to top towards the inside of the annular flange one. Similarly, an annular guide slope two is provided on the side of the annular flange two away from the valve cavity, and the annular guide slope two slopes from bottom to top towards the inside of the annular flange one. Both the side of the annular flange one facing the inside of the cylinder and the side of the annular flange two facing the inside of the cylinder are designed with slopes, which can further guide the ejected high-pressure airflow and extinguishing medium, reduce wind noise, increase flow velocity, and improve extinguishing efficiency.

[0012] Preferably, the valve chamber has a discharge nozzle on its side wall, and a baffle matching the discharge nozzle is also provided on the side wall of the valve chamber. The baffle is positioned at the discharge nozzle and slidably connected to the valve chamber. The valve stem and the baffle are connected by a transmission structure. When not in use, the baffle blocks the discharge nozzle, effectively preventing moisture or insects from entering the valve body through the discharge nozzle, thus avoiding interference and corrosion of the internal parts of the valve body, protecting the valve body, and extending the service life of the fire extinguisher.

[0013] Preferably, the top surface of the valve cavity is provided with a baffle groove, one end of the baffle is placed in the baffle groove and slidably connected thereto, the bottom surface of the baffle groove and the baffle are connected by two springs, the other end of the baffle matches the discharge nozzle, and in the unused state, the other end of the baffle blocks the discharge nozzle. The transmission structure includes a card, the card is placed in the top surface of the valve cavity and slidably connected thereto, the side wall of the valve cavity is provided with a card groove, the card groove and the discharge nozzle are respectively located on opposite side walls of the valve cavity, one end of the card is placed in the card groove and slidably connected thereto, the bottom surface of the card groove and the card are connected by three springs, the baffle is provided with a pressure groove that matches the other end of the card, in the unused state, the other end of the card is placed in the pressure groove and the second spring is in a stretched state, the valve stem is placed on the side of the card, a locking block is fixed on the side wall of the valve stem, and a notch that matches the locking block is provided on the side wall of the card, in the unused state, the locking block is placed in the notch and the third spring is in a stretched state. When the valve stem and valve core move downwards, the extinguishing medium inside the cylinder will be automatically sprayed out through the guide hole along with the high-pressure airflow. At the same time, the locking block on the valve stem will automatically disengage from the notch on the card. Under the elastic force of spring three, the card will automatically retract into the card groove and release the locking effect on the baffle. This will cause the baffle to automatically retract into the baffle groove under the elastic force of spring two, thereby opening the discharge nozzle and ensuring that the extinguishing medium is sprayed out smoothly. The structure is simple and easy to control.

[0014] The beneficial effects of this utility model are: the connection method is simple and easy to operate, convenient for installation and disassembly, and reduces the difficulty of later maintenance and repair; the connection has good sealing performance and strong stability; the structure is simple and easy to operate and control; it reduces wind noise, increases flow rate, and improves fire extinguishing efficiency; it has the function of protecting the valve body; and it improves spray efficiency. Attached Figure Description

[0015] Figure 1 This is the front view of this utility model;

[0016] Figure 2 yes Figure 1 Sectional view at point AA;

[0017] Figure 3 yes Figure 2 Enlarged view of point B in the middle;

[0018] Figure 4 This is the right view of this utility model;

[0019] Figure 5 yes Figure 4 Sectional view at point CC.

[0020] In the diagram: 2. Valve body, 3. Fire extinguisher bottle neck, 4. Connector, 5. Feed channel, 6. Sealing compression ring, 7. Annular flange one, 8. Valve cavity, 9. Feed guide hole, 10. Valve stem, 11. Valve stem through hole, 12. Valve core, 13. Pressure handle, 14. Lifting handle, 15. Safety pin, 16. Annular flange two, 17. Spring one, 18. Discharge nozzle, 19. Baffle, 20. Baffle groove, 21. Spring two, 22. Card, 23. Card groove, 24. Spring three, 25. Pressure groove, 26. Locking block, 27. Notch. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 , Figure 2 and Figure 3As shown, this utility model provides a carbon fiber fire extinguisher structure, including a fire extinguisher bottle neck 3 and a valve body 2. The bottom of the valve body 2 is provided with a connector 4 that matches the fire extinguisher bottle neck 3. The inner side of the connector 4 is provided with a feeding channel 5. An internal thread area is provided on the inner wall of the fire extinguisher bottle neck 3, and an external thread area is provided on the outer wall of the connector 4. The connector 4 is threadedly connected to the fire extinguisher bottle neck 3 through the engagement of the external and internal thread areas. The interior of the fire extinguisher bottle is connected to the interior of the valve body 2 through the feeding channels 5 on the fire extinguisher bottle neck 3 and the connector 4 in sequence. The port of the connector 4... An annular inclined guide surface is provided at the outer edge of the connector 4. The annular inclined guide surface slopes inward from the bottom of the connector 4 to the port of the connector 4. A sealing compression ring 6 is also fixed on the annular inclined guide surface. The feed channel 5 is located inside the sealing compression ring 6. An annular flange 7 matching the port of the connector 4 is also fixed on the inner wall of the fire extinguisher bottle mouth 3. An annular inclined pressure surface matching the annular inclined guide surface is fixed on the side of the annular flange 7 facing the connector 4. The annular inclined guide surface and the annular inclined pressure surface are parallel. The sealing compression ring 6 is placed between the annular inclined guide surface and the annular inclined pressure surface.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the valve body 2 has a valve cavity 8 inside, and a feed channel 5 is located below the valve cavity 8. The valve cavity 8 and the feed channel 5 are connected by a guide hole 9. A valve stem 10 is installed on the valve body 2. The bottom end of the valve stem 10 passes through the guide hole 9 and is placed inside the feed channel 5. The diameter of the valve stem 10 is smaller than the diameter of the guide hole 9. A valve stem through hole 11 is provided on the top surface of the valve cavity 8. The top end of the valve stem 10 passes through the valve stem through hole 11 and is placed outside the valve body 2. The valve stem 10 and the valve stem through hole 11 are connected in a sealed sliding connection. A valve core 12 that matches the guide hole 9 is fixed at the bottom end of the valve stem 10. The width of the valve core 12 is smaller than that of the feed channel 5. The valve body 2 has a width of 10. A pressure handle 13 is installed on the top of the valve body 2. A lifting handle 14 is fixed on the side wall of the valve body 2. One end of the pressure handle 13 is hinged to the valve body 2. The other end of the pressure handle 13 is located above the lifting handle 14. The top end of the valve stem 10 is located below the pressure handle 13 and in contact with the pressure handle 13. A safety pin 15 is installed between the pressure handle 13 and the lifting handle 14. An annular flange 16 and a spring 17 are fixed on the inner side wall of the feed channel 5. The spring 17 is placed between the valve core 12 and the annular flange 16. The top end of the spring 17 is connected to the valve core 12. The bottom end of the spring 17 is placed on the annular flange 16.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, the top of the valve core 12 is adapted to the guide hole 9, the bottom of the valve core 12 is conical, and the top of the spring 17 is sleeved on the bottom of the valve core 12.

[0025] like Figure 1 ,Figure 2 and Figure 3 As shown, an annular guide slope 1 is provided on the side of the annular flange 1 7 away from the valve cavity 8. The annular guide slope 1 is inclined from bottom to top towards the inside of the annular flange 1 7. An annular guide slope 2 is provided on the side of the annular flange 2 16 away from the valve cavity 8. The annular guide slope 2 is inclined from bottom to top towards the inside of the annular flange 1 7.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, a discharge nozzle 18 is provided on the side wall of the valve chamber 8, and a baffle 19 matching the discharge nozzle 18 is also provided on the side wall of the valve chamber 8. The baffle 19 is placed at the discharge nozzle 18 and is slidably connected to the valve chamber 8. The valve stem 10 and the baffle 19 are connected by a transmission structure.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, a baffle groove 20 is provided on the top surface of the valve cavity 8. One end of the baffle 19 is placed in the baffle groove 20 and slidably connected thereto. The bottom surface of the baffle groove 20 and the baffle 19 are connected by a spring 21. The other end of the baffle 19 matches the discharge nozzle 18. In the non-use state, the other end of the baffle 19 blocks the discharge nozzle 18. The transmission structure includes a card 22, which is placed on the top surface of the valve cavity 8 and slidably connected thereto. A card groove is provided on the side wall of the valve cavity 8. 23. The card groove 23 and the discharge nozzle 18 are located on opposite side walls of the valve chamber 8. One end of the card 22 is placed in the card groove 23 and slidably connected to it. The bottom surface of the card groove 23 and the card 22 are connected by a spring 24. The baffle 19 is provided with a pressure groove 25 that matches the other end of the card 22. In the unused state, the other end of the card 22 is placed in the pressure groove 25 and the spring 21 is in a stretched state. The valve stem 10 is placed on the side of the card 22. Figure 4 and Figure 5 As shown, a locking block 26 is fixed on the side wall of the valve stem 10, and a notch 27 matching the locking block 26 is provided on the side wall of the card 22. In the unused state, the locking block 26 is placed in the notch 27 and the spring 3 24 is in the stretched state.

[0028] Operating principle:

[0029] First, remove the safety pin 15 to unlock the pressure handle 13. Then, press the pressure handle 13 down to move the valve stem 10 and valve core 12 downward, causing the valve core 12 to disengage from the feed hole 9 and thus open the feed hole 9. At this time, the extinguishing medium in the fire extinguisher bottle will be automatically sprayed out through the feed hole 9 with the high-pressure airflow. At the same time, the locking block 26 on the valve stem 10 will automatically disengage from the notch 27 on the card 22. Under the elastic force of the spring 3 24, the card 22 will automatically retract into the card slide groove 23 and release the locking effect on the baffle 19. Under the elastic force of the spring 21, the baffle 19 will also automatically retract into the baffle slide groove 20, thereby opening the discharge nozzle 18 and ensuring that the extinguishing medium is sprayed out smoothly.

Claims

1. A valve structure for a carbon fiber fire extinguisher, characterized in that, The device includes a valve body (2), a connector (4) at the bottom of the valve body (2), a feed channel (5) on the inner side of the connector (4), an external thread area on the outer side wall of the connector (4), an annular inclined guide surface at the outer edge of the port of the connector (4), the annular inclined guide surface is inclined from the bottom of the connector (4) to the port of the connector (4) towards the inner side of the connector (4), a sealing extrusion ring (6) is also fixed on the annular inclined guide surface, the feed channel (5) is located inside the sealing extrusion ring (6), an annular flange (7) matching the port of the connector (4) is also fixed on the inner side wall of the bottle mouth (3), an annular flange (7) matching the annular inclined guide surface is fixed on the side of the annular flange (7) facing the connector (4), the annular inclined guide surface and the annular inclined pressure surface are parallel, and the sealing extrusion ring (6) is placed between the annular inclined guide surface and the annular inclined pressure surface.

2. The valve structure of a carbon fiber fire extinguisher according to claim 1, characterized in that, The valve body (2) has a valve cavity (8) inside. The feed channel (5) is located below the valve cavity (8). The valve cavity (8) and the feed channel (5) are connected by a guide hole (9). A valve stem (10) is installed on the valve body (2). The bottom end of the valve stem (10) passes through the guide hole (9) and is placed inside the feed channel (5). The diameter of the valve stem (10) is smaller than the diameter of the guide hole (9). A valve stem through hole (11) is provided on the top surface of the valve cavity (8). The top end of the valve stem (10) passes through the valve stem through hole (11) and is placed outside the valve body (2). The valve stem (10) and the valve stem through hole (11) are connected in a sealed sliding connection. A valve core (12) matching the guide hole (9) is fixed at the bottom end of the valve stem (10). The width of the valve core (12) is smaller than that of the feed channel (9). 5) Width, a pressure handle (13) is installed on the top of the valve body (2), a handle (14) is fixed on the side wall of the valve body (2), one end of the pressure handle (13) is hinged to the valve body (2), the other end of the pressure handle (13) is located above the handle (14), the top end of the valve stem (10) is located below the pressure handle (13) and in contact with the pressure handle (13), a safety pin (15) is installed between the pressure handle (13) and the handle (14), an annular flange two (16) and a spring one (17) are fixed on the inner side wall of the feed channel (5), the spring one (17) is placed between the valve core (12) and the annular flange two (16), the top end of the spring one (17) is connected to the valve core (12), and the bottom end of the spring one (17) is placed on the annular flange two (16).

3. The valve structure of a carbon fiber fire extinguisher according to claim 2, characterized in that, The top of the valve core (12) is adapted to the guide hole (9), the bottom of the valve core (12) is conical, and the top of the spring (17) is sleeved on the bottom of the valve core (12).

4. The valve structure of a carbon fiber fire extinguisher according to claim 2, characterized in that, An annular guide slope is provided on the side of the annular flange one (7) away from the valve cavity (8). The annular guide slope one is inclined from bottom to top toward the inside of the annular flange one (7). An annular guide slope two is provided on the side of the annular flange two (16) away from the valve cavity (8). The annular guide slope two is inclined from bottom to top toward the inside of the annular flange one (7).

5. The valve structure of a carbon fiber fire extinguisher according to claim 2, characterized in that, The valve cavity (8) is provided with a discharge nozzle (18) on its side wall. The valve cavity (8) is also provided with a baffle (19) that matches the discharge nozzle (18). The baffle (19) is placed at the discharge nozzle (18) and is slidably connected to the valve cavity (8). The valve stem (10) and the baffle (19) are connected by a transmission structure.

6. The valve structure of a carbon fiber fire extinguisher according to claim 5, characterized in that, The valve cavity (8) has a baffle groove (20) on its top surface. One end of the baffle (19) is placed in the baffle groove (20) and slidably connected thereto. The bottom surface of the baffle groove (20) and the baffle (19) are connected by a spring (21). The other end of the baffle (19) matches the discharge nozzle (18). In the unused state, the other end of the baffle (19) blocks the discharge nozzle (18). The transmission structure includes a card (22). The card (22) is placed on the top surface of the valve cavity (8) and slidably connected thereto. The side wall of the valve cavity (8) has a card groove (23). The card groove (23) and the discharge nozzle (18) are located on opposite side walls of the valve cavity (8). One end of the card is placed in the card groove (23) and slidably connected thereto. The bottom surface of the card groove (23) and the card (22) are connected by a spring three (24). The baffle (19) is provided with a pressure groove (25) that matches the other end of the card (22). In the unused state, the other end of the card (22) is placed in the pressure groove (25) and the spring two (21) is in a stretched state. The valve stem (10) is placed on the side of the card (22). A card block (26) is fixed on the side wall of the valve stem (10). A notch (27) that matches the card block (26) is provided on the side wall of the card (22). In the unused state, the card block (26) is placed in the notch (27) and the spring three (24) is in a stretched state.

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