Valve structure of high-pressure fire extinguisher

Abstract

The utility model discloses a valve structure of a high-pressure fire extinguisher, and aims to provide the valve structure of the high-pressure fire extinguisher, which can automatically release pressure when the pressure in the fire extinguisher is too high. The valve comprises a valve body, a lifting handle, a pressing handle and a valve element assembly, an air outlet hole and a communicating hole are formed in the valve body, the air outlet hole is communicated with the communicating hole, the valve element assembly is installed in the communicating hole, the lifting handle is installed at the upper end of the valve body, the pressing handle is rotationally connected with the lifting handle, and the valve element assembly is installed in the communicating hole. The pressing handle makes contact with the upper end of the valve element assembly, a safety hole is formed in the valve body and communicated with the communicating hole, and a safety assembly is installed in the safety hole. The fire extinguisher has the beneficial effects that when the internal pressure of the fire extinguisher is too large, the pressure is automatically released, mistaken touch is prevented, fire extinguishing materials are convenient to release, the sealing performance can be improved, the pressure in a bottle can be prevented from being too high, and blockage can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field related to fire extinguishers, in particular to a valve structure of a high-pressure fire extinguisher. Background Art

[0002] Gas fire extinguishers generally contain high-pressure gas. When the valve is opened, the gas in the fire extinguisher will spray out to extinguish the fire. However, when a fire occurs, the fire extinguishers stored in the building will heat up rapidly due to being in the fire, causing the internal pressure of the fire extinguisher to further increase, making it have a certain risk of explosion. The existing fire extinguisher valve can only release gas to relieve pressure when the handle is squeezed, and cannot cope with the sudden increase in pressure, posing a safety hazard.

[0003] China Patent Authorization Publication No. CN202490348U, issued November 24, 2010, discloses an improved fire extinguisher valve comprising an aluminum valve body, a valve stem assembly, a pressure handle, a lifting handle, a safety pin, an air core assembly, and a spring. The pressure handle is rotatably connected to the aluminum valve body via rivets. The lifting handle is mounted on the aluminum valve body. The aluminum valve body is provided with a first passageway and a second passageway, which intersect each other. The valve stem assembly is disposed within the first passageway. A cap is provided at the upper end of the valve stem assembly, protruding from the upper portion of the aluminum valve body. The spring is sleeved on the valve stem assembly and positioned between the aluminum valve body and the cap. A gasket and a sealing ring are provided between the spring and the aluminum valve body. The aluminum valve body is provided with an air core assembly, and the safety pin passes through the pressure handle and the lifting handle. A disadvantage of this utility model is the lack of an overpressure protection device, which can easily pose a safety hazard when the pressure is too high. Utility Model Content

[0004] The utility model aims to overcome the deficiency of the prior art in lacking an overpressure safety device and provides a high-pressure fire extinguisher valve structure which automatically releases pressure when the internal pressure of the fire extinguisher is too high.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-pressure fire extinguisher valve structure includes a valve body, a lifting handle, a pressing handle, and a valve core assembly. The valve body is equipped with an air outlet and a connecting hole, the air outlet is connected to the connecting hole, the valve core assembly is installed in the connecting hole, the lifting handle is installed at the upper end of the valve body, the pressing handle is rotatably connected to the lifting handle, the pressing handle contacts the upper end of the valve core assembly, the valve body is provided with a safety hole, the safety hole is connected to the connecting hole, and a safety assembly is installed in the safety hole.

[0007] The valve body is connected to the fire extinguisher bottle body and is used for releasing the fire extinguishing material. An air outlet is provided in the valve body for releasing the fire extinguishing material. The air outlet is connected to the fire extinguisher bottle body through a connecting hole. The connecting hole is connected to the bottle body. A valve core assembly is installed in the connecting hole. The valve core assembly is used to control the opening and closing of the connecting hole to determine the release state of the fire extinguishing material. The lifting handle is installed on the valve body for lifting the fire extinguisher. The pressing handle rotatably installed with the lifting handle can be rotated. The pressing handle can be rotated to squeeze the valve core assembly downward. The valve core assembly is squeezed downward to open the connecting hole to release the fire extinguishing material. A safety hole connected to the connecting hole is provided on the valve body. A safety assembly is installed in the safety hole. When the pressure in the bottle is too high, the safety assembly will be broken through to release the gas to reduce the pressure in the bottle, thereby preventing safety accidents and achieving the purpose of automatically releasing the pressure when the internal pressure of the fire extinguisher is too high.

[0008] Preferably, a rotating rod is mounted on one end of the pressing handle, and the rotating rod passes through the lifting handle and the pressing handle in sequence. The pressing handle is rotatably connected to the lifting handle via the rotating rod. A locking pin is mounted on the pressing handle, and one end of the locking pin is connected to the valve body. The other end of the locking pin passes through the pressing handle and the lifting handle in sequence and is then positioned on the other side of the pressing handle. The pressing handle is rotatably connected to the lifting handle via the rotating rod, and a locking pin is mounted on the pressing handle, passing through the lifting handle and the pressing handle. The locking pin can secure the relative position of the lifting handle and the pressing handle, preventing rotation. The locking pin can ensure that the pressing handle will not shift due to accidental activation, thereby preventing leakage of fire extinguishing material. This design can prevent accidental activation.

[0009] Preferably, the connecting hole includes a valve core hole and a mounting hole, the valve core hole is provided at the upper end of the valve body, the mounting hole is provided at the lower end of the valve body, the mounting hole is connected with the valve core hole, and the valve core hole is connected with the air outlet hole, the valve core assembly includes a pressing rod, a top block, a spring and a limiting ring, the upper end of the pressing rod contacts the pressing handle, the other end of the pressing rod passes through the valve core hole and is placed in the connecting hole, the lower end of the pressing rod is threadedly connected to the top block, the limiting ring is installed at the lower end of the mounting hole and threadedly connected to the valve body, one end of the spring contacts the limiting ring, and the other end of the spring contacts the top block. The valve core hole of the communicating hole is placed at the upper end of the valve body, and the mounting hole is placed at the lower end of the valve body. The two are connected, and a pressing rod that can move up and down is installed in the valve core hole, and the lower end of the pressing rod is placed in the communicating hole and is installed with a top block. The upward movement of the top block can close the lower end of the valve core hole. Similarly, when the top block moves, the valve core hole can be opened, thereby releasing the fire extinguishing material to enter the valve core hole from the mounting hole and then be released through the air outlet hole. The upper end of the pressing rod contacts the upper end of the pressing handle, which can squeeze the pressing rod to move downward to open the valve core hole. A spring is installed on the lower end surface of the top block. The spring is placed between the top block and the limit ring, which can apply thrust to the top block to ensure that the top block fits with the end face of the valve core hole. The limit ring is installed at the bottom end of the mounting hole, which is conducive to installing the pressing rod and spring in the communicating hole. This design facilitates the release of fire extinguishing material.

[0010] Preferably, a sealing ring is installed on the upper end of the pressing rod, and the pressing rod and the valve body are sealed by the sealing ring. A mounting groove is provided on the top block, and a sealing block is installed in the mounting groove. A boss is installed at the connection point between the valve core hole and the mounting hole. The boss is annular and contacts the sealing block. The sealing ring installed at the upper end of the pressing rod is used to seal the upper end of the pressing rod and the valve body to prevent leakage from the upper end of the pressing rod during the use of the fire extinguisher. At the same time, a sealing block is installed in the mounting groove provided on the top block. The sealing block fits with the boss when the fire extinguisher is not in use. The boss is installed on the plane where the valve core hole and the connecting hole are connected. The presence of the boss can reduce the contact area with the sealing block, and can better squeeze the sealing block so that the sealing block and the boss fit better, thereby ensuring that the sealing block better seals the valve core hole when the fire extinguisher is not in use. Such a design can improve the sealing performance.

[0011] Preferably, the safety assembly includes a safety cap, a safety disc, and a gasket. The safety cap is threadedly connected to the safety hole, the safety disc is mounted on one end of the safety cap positioned within the safety hole, and the gasket is mounted between the safety disc and the valve body. The safety hole communicates with the mounting hole on the communication hole. When the pressure inside the bottle is excessive, the pressure squeezes the safety disc in the safety hole. After the pressure inside the bottle destroys the safety disc, the pressure is released through the hole in the safety cap. The gasket installed between the safety disc and the valve body prevents the safety disc from being destroyed. This design can prevent excessive pressure inside the bottle.

[0012] Preferably, a side hole is formed at the lower end of the valve body, the side hole being in communication with the mounting hole. The side hole in the valve body communicating with the mounting hole allows external pressure to squeeze the mounting hole and exchange it with the bottle body when a blockage occurs in the mounting hole or at the retaining ring, thereby reducing blockage.

[0013] The beneficial effects of the utility model are: automatically releasing the pressure when the internal pressure of the fire extinguisher is too high, preventing accidental touch, facilitating the release of fire extinguishing materials, improving the sealing performance, preventing overpressure in the bottle, and reducing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 yes Figure 1 sectional view.

[0016] In the figure: 1. Valve body; 11. Air outlet; 12. Connecting hole; 13. Safety hole; 14. Valve core hole; 15. Mounting hole; 16. Boss; 17. Side hole; 2. Lifting handle; 3. Pressing handle; 31. Rotating rod; 32. Locking pin; 4. Valve core assembly; 41. Pressing rod; 42. Top block; 43. Spring; 44. Limiting ring; 45. Sealing ring; 46. Mounting groove; 47. Sealing block; 5. Safety assembly; 51. Safety cap; 52. Safety disc; 53. Gasket. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1 、 Figure 2 In the embodiment shown, a high-pressure fire extinguisher valve structure includes a valve body 1, a lifting handle 2, a pressing handle 3 and a valve core assembly 4. The valve body 1 is provided with an air outlet 11 and a communicating hole 12, the air outlet 11 is connected to the communicating hole 12, the valve core assembly 4 is installed in the communicating hole 12, the lifting handle 2 is installed at the upper end of the valve body 1, the pressing handle 3 is rotatably connected to the lifting handle 2, the pressing handle 3 is in contact with the upper end of the valve core assembly 4, and a safety hole 13 is provided on the valve body 1, the safety hole 13 is connected to the communicating hole 12, and a safety assembly 5 is installed in the safety hole 13.

[0019] A rotating rod 31 is installed at one end of the pressing handle 3, and the rotating rod 31 passes through the lifting handle 2 and the pressing handle 3 in sequence. The pressing handle 3 is rotatably connected to the lifting handle 2 through the rotating rod 31. A locking pin 32 is installed on the pressing handle 3, and one end of the locking pin 32 is connected to the valve body 1, and the other end of the locking pin 32 passes through the pressing handle 3 and the lifting handle 2 in sequence and is placed on the other side of the pressing handle 3.

[0020] The communicating hole 12 includes a valve core hole 14 and a mounting hole 15. The valve core hole 14 is provided at the upper end of the valve body 1, and the mounting hole 15 is provided at the lower end of the valve body 1. The mounting hole 15 is communicated with the valve core hole 14, and the valve core hole 14 is communicated with the air outlet 11. The valve core assembly 4 includes a pressing rod 41, a top block 42, a spring 43 and a limiting ring 44. The upper end of the pressing rod 41 contacts the pressing handle 3, and the other end of the pressing rod 41 passes through the valve core hole 14 and is placed in the communicating hole 12. The lower end of the pressing rod 41 is threadedly connected to the top block 42, and the limiting ring 44 is installed at the lower end of the mounting hole 15 and is threadedly connected to the valve body 1. One end of the spring 43 contacts the limiting ring 44, and the other end of the spring 43 contacts the top block 42.

[0021] A sealing ring 45 is installed at the upper end of the pressing rod 41, and the pressing rod 41 is sealedly connected to the valve body 1 through the sealing ring 45. A mounting groove 46 is provided on the top block 42, and a sealing block 47 is installed in the mounting groove 46. A boss 16 is installed at the connection between the valve core hole 14 and the mounting hole 15. The boss 16 is annular and contacts the sealing block 47.

[0022] The safety assembly 5 includes a safety cap 51, a safety disc 52, and a gasket 53. The safety cap 51 is threadedly connected to the safety hole 13. The safety disc 52 is installed on the end of the safety cap 51 that is located in the safety hole 13. The gasket 53 is installed between the safety disc 52 and the valve body 1. The lower end of the valve body 1 has a side hole 17, which is connected to the mounting hole 15.

[0023] During use, the lock pin 32 is removed, and the pressing handle 3 is pressed and rotated. The rotating pressing handle 3 presses the pressing rod 41 downward, which drives the push block 42 downward. The downward movement of the push block 42 drives the sealing block 47 away from the protrusion 16 to open the valve core hole 14. The fire extinguishing material then enters the valve core hole 14 through the mounting hole 15 and is then released through the air outlet 11. When the fire extinguisher is not in use, the spring 43 applies a thrust to the push block 42, ensuring that the sealing block 47 is tightly fitted against the protrusion 16.

[0024] When the pressure inside the bottle is too high, the pressure will squeeze the safety disc 52 in the safety hole 13. After the pressure inside the bottle destroys the safety disc 52, the pressure will be released from the hole 51 on the safety cap to prevent the internal pressure from being too high.

Claims

1. A high-pressure fire extinguisher valve structure, characterized in that: The valve body (1) comprises a valve body (1), a lifting handle (2), a pressing handle (3) and a valve core assembly (4), wherein the valve body (1) is provided with an air outlet (11) and a connecting hole (12), wherein the air outlet (11) is connected to the connecting hole (12), wherein the valve core assembly (4) is installed in the connecting hole (12), wherein the lifting handle (2) is installed at the upper end of the valve body (1), wherein the pressing handle (3) is rotatably connected to the lifting handle (2), wherein the pressing handle (3) contacts the upper end of the valve core assembly (4), wherein a safety hole (13) is provided on the valve body (1), wherein the safety hole (13) is connected to the connecting hole (12), wherein a safety assembly (5) is installed in the safety hole (13).

2. A high-pressure fire extinguisher valve structure according to claim 1, characterized in that: A rotating rod (31) is installed at one end of the pressing handle (3), and the rotating rod (31) passes through the lifting handle (2) and the pressing handle (3) in sequence. The pressing handle (3) is rotatably connected to the lifting handle (2) through the rotating rod (31). A locking pin (32) is installed on the pressing handle (3), and one end of the locking pin (32) is connected to the valve body (1). The other end of the locking pin (32) passes through the pressing handle (3) and the lifting handle (2) in sequence and is then placed on the other side of the pressing handle (3).

3. A high-pressure fire extinguisher valve structure according to claim 1, characterized in that: The connecting hole (12) includes a valve core hole (14) and a mounting hole (15), wherein the valve core hole (14) is provided at the upper end of the valve body (1), and the mounting hole (15) is provided at the lower end of the valve body (1), wherein the mounting hole (15) is communicated with the valve core hole (14), and the valve core hole (14) is communicated with the air outlet hole (11), wherein the valve core assembly (4) includes a pressing rod (41), a top block (42), a spring (43) and a limiting ring (4 ... The upper end of the pressing rod (41) contacts the pressing handle (3), the other end of the pressing rod (41) passes through the valve core hole (14) and is placed in the connecting hole (12), the lower end of the pressing rod (41) is threadedly connected to the top block (42), the limiting ring (44) is installed at the lower end of the mounting hole (15) and is threadedly connected to the valve body (1), one end of the spring (43) contacts the limiting ring (44), and the other end of the spring (43) contacts the top block (42).

4. A high-pressure fire extinguisher valve structure according to claim 3, characterized in that: A sealing ring (45) is installed at the upper end of the pressing rod (41), and the pressing rod (41) is sealed and connected to the valve body (1) through the sealing ring (45). The top block (42) is provided with a mounting groove (46), and a sealing block (47) is installed in the mounting groove (46). A boss (16) is installed at the connection between the valve core hole (14) and the mounting hole (15), and the boss (16) is annular and contacts the sealing block (47).

5. A high-pressure fire extinguisher valve structure according to claim 1, characterized in that: The safety assembly (5) comprises a safety cap (51), a safety plate (52) and a gasket (53); the safety cap (51) is threadedly connected to the safety hole (13); the safety plate (52) is mounted on one end of the safety cap (51) that is located in the safety hole (13); and the gasket (53) is mounted between the safety plate (52) and the valve body (1).

6. A high-pressure fire extinguisher valve structure according to claim 3, characterized in that: A side hole (17) is provided at the lower end of the valve body (1), and the side hole (17) is communicated with the mounting hole (15).

Images