Leak-proof fire extinguisher valve sealing structure

Abstract

The utility model relates to the technical field of fire extinguishers, in particular to a leakproof fire extinguisher valve sealing structure which comprises a valve rod and a first sealing assembly movably arranged on the outer side of the valve rod, the first sealing assembly comprises a first sealing ring movably arranged on the outer side of the valve rod in a sleeved mode, and a gasket is movably arranged on one side of the first sealing ring. A nut is movably arranged on one side of the gasket, the second sealing assembly is movably arranged on the outer side of the valve rod and comprises a second sealing ring movably arranged on the outer side of the valve rod in a sleeving mode, a threaded sleeve is movably arranged on one side of the second sealing ring, and a first thread is fixedly arranged at one end of the outer side surface of the valve rod. In the utility model, the sealing ring is directly sleeved on the outer side of the valve rod, and the nut is screwed to extrude and fix the sealing ring, so that the contact between the sealing ring and the valve rod in the mounting process is reduced, the surface of the sealing ring is prevented from being pulled and twisted due to friction force during contact, and the surface of the sealing ring forms a flat surface; and the sealing effect among the sealing ring, the valve rod and the valve seat is improved.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguisher valve technology, specifically a leak-proof fire extinguisher valve sealing structure. Background Technology

[0002] A fire extinguisher is a portable fire-fighting tool containing chemicals used to extinguish fires. Fire extinguishers are a common fire prevention facility, stored in public places or areas where fires may occur. Different types of fire extinguishers contain different components and are designed for different causes of fire. Existing water-based fire extinguishers use a sealing ring on the valve stem to press against the valve seat to seal the valve, preventing external moisture from entering the fire extinguisher and causing it to malfunction.

[0003] In existing water-based fire extinguishers, the sealing rings in the valves are usually installed by the elastic deformation of the sealing ring itself, which fits into the mounting groove of the valve stem. During the installation process, there is a lot of friction between the inner wall of the sealing ring and the surface of the valve stem. The frictional force can easily cause the surface of the sealing ring to be pulled and twisted, making the surface of the sealing ring not form a flat surface, resulting in a decrease in the sealing effect between the sealing ring and the valve stem and valve seat. Utility Model Content

[0004] The purpose of this invention is to provide a leak-proof fire extinguisher valve sealing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A leak-proof fire extinguisher valve sealing structure, comprising:

[0007] Valve stem;

[0008] A first sealing assembly is movably disposed on the outside of the valve stem. The first sealing assembly includes a first sealing ring movably sleeved on the outside of the valve stem. A gasket is movably disposed on one side of the first sealing ring, and a nut is movably disposed on one side of the gasket.

[0009] The second sealing assembly is movably located on the outside of the valve stem. The second sealing assembly includes a second sealing ring movably sleeved on the outside of the valve stem, and a threaded sleeve is movably provided on one side of the second sealing ring.

[0010] Furthermore, an auxiliary block is fixedly installed at an equal angle on one end surface of the threaded sleeve.

[0011] Furthermore, a No. 1 thread is fixedly provided at one end of the outer surface of the valve stem, and the nut is screwed onto one end of the valve stem through the No. 1 thread.

[0012] Furthermore, a stepped collar is fixedly installed on the outer surface of the valve stem, a first limiting ring is fixedly installed on one side of the stepped collar on the outer surface of the valve stem, and a second limiting ring is fixedly installed on one side of the stepped collar on the outer surface of the valve stem.

[0013] Preferably, the second sealing ring is movably disposed on the outside of the stepped collar, and a second thread is fixedly installed at the other end of the outer surface of the valve stem, and the threaded sleeve is screwed onto the outside of the valve stem through the second thread.

[0014] Preferably, a compression ring is fixedly embedded on one side surface of the gasket, and the second limiting ring is movably connected to the compression ring.

[0015] Preferably, the inner surface of the first sealing ring is provided with a stepped groove, and the extrusion ring is movably inserted into the stepped groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By placing the gasket on the outside of the valve stem when the No. 1 sealing ring is movably fitted onto the outside of the valve stem, and then tightening the nut to compress the gasket, the No. 2 limiting ring is retracted into the compression ring, restricting the position of the gasket. At the same time, the gasket compresses the No. 1 sealing ring with a certain pressure, fixing the No. 1 sealing ring in place. Thus, by directly fitting the No. 1 sealing ring onto the outside of the valve stem and compressing the gasket to fix the No. 1 sealing ring, the contact between the No. 1 sealing ring and the valve stem during installation is reduced, preventing friction from causing the surface of the No. 1 sealing ring to be pulled or twisted. This creates a flat surface for the No. 1 sealing ring, improving the sealing effect between the No. 1 sealing ring and the valve stem and fire extinguisher valve seat.

[0018] 2. Place the No. 2 sealing ring on the outside of the stepped collar, and tighten the threaded sleeve. When one end of the threaded sleeve abuts against one end of the stepped collar, the threaded sleeve will press the No. 2 sealing ring with a certain pressure, thus fixing the No. 2 sealing ring. At the same time, this will prevent the No. 2 sealing ring from rubbing against the valve stem during installation, reduce the pulling and twisting of the surface of the No. 2 sealing ring, and improve the sealing effect of the No. 2 sealing ring. Multiple auxiliary blocks make it easier for wrenches or pliers to grip the threaded sleeve and make it easier to rotate and tighten the threaded sleeve. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the vertical cross-sectional structure of the valve stem and the second sealing assembly in this utility model;

[0022] Figure 4This is a schematic diagram of the vertical cross-sectional structure of the valve stem and the first sealing assembly in this utility model.

[0023] In the diagram: 1. Valve stem; 101. Stepped collar; 102. First limiting ring; 103. Second limiting ring; 2. First sealing assembly; 201. First sealing ring; 202. Stepped groove; 203. Gasket; 204. Compression ring; 205. Nut; 206. First thread; 3. Second sealing assembly; 301. Second thread; 302. Second sealing ring; 303. Threaded sleeve; 304. Auxiliary block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 In this embodiment of the present invention, a leak-proof fire extinguisher valve sealing structure includes a valve stem 1, a stepped collar 101 fixedly installed on the outer surface of the valve stem 1, a first limiting ring 102 fixedly installed on one side of the stepped collar 101 on the outer surface of the valve stem 1, a second limiting ring 103 fixedly installed on one side of the stepped collar 101 on the outer surface of the valve stem 1, a first sealing component 2 movably disposed on the outer side of the valve stem 1, the first sealing component 2 including a first sealing ring 201 movably sleeved on the outer side of the valve stem 1, the first sealing ring 201 cooperating with the valve seat of the fire extinguisher to seal and prevent the extinguishing medium from flowing out of the fire extinguisher, a gasket 203 movably disposed on one side of the first sealing ring 201, a nut 205 movably disposed on one side of the gasket 203, and a second sealing component 3 movably disposed on the outer side of the valve stem 1, the second sealing component 3 including a second sealing ring 302 movably sleeved on the outer side of the valve stem 1, a threaded sleeve 303 movably disposed on one side of the second sealing ring 302.

[0026] Specifically, the first limiting ring 102 restricts the installation position of the first sealing ring 201, so that the first sealing ring 201 is installed at a specific position on the valve stem 1; the stepped collar 101 restricts the position of the second sealing ring 302, so that the second sealing ring 302 is installed at a specific position on the valve stem 1; and the second limiting ring 103 restricts the position of the gasket 203 to prevent it from excessively compressing the first sealing ring 201.

[0027] Example 1

[0028] like Figure 2-4As shown, in this embodiment, a first thread 206 is fixedly provided at one end of the outer surface of the valve stem 1, and the nut 205 is screwed onto one end of the valve stem 1 through the first thread 206; a compression ring 204 is fixedly embedded on one side surface of the gasket 203, and the second limiting ring 103 is movably inserted into the compression ring 204; a stepped groove 202 is provided on the inner surface of the first sealing ring 201, and the compression ring 204 is movably inserted into the stepped groove 202.

[0029] In this embodiment, when the No. 1 sealing ring 201 is movably sleeved on the outside of the valve stem 1, the gasket 203 is sleeved on the outside of the valve stem 1, and the nut 205 is screwed on to engage with one end of the valve stem 1. The gasket 203 is squeezed, and the No. 2 limiting ring 103 is retracted into the squeezing ring 204, restricting the position of the gasket 203. At the same time, the gasket 203 squeezes the No. 1 sealing ring 201 with a certain pressure, fixing the No. 1 sealing ring 201. Thus, by directly sleeved on the outside of the valve stem 1 and squeezing the gasket 203 to fix the No. 1 sealing ring 201, the contact between the No. 1 sealing ring 201 and the valve stem 1 during the installation process is reduced, so as to avoid the friction during contact causing the surface of the No. 1 sealing ring 201 to be pulled and twisted, so that the surface of the No. 1 sealing ring 201 forms a flat surface, improving the sealing effect between the No. 1 sealing ring 201 and the valve stem 1 and the fire extinguisher valve seat.

[0030] like Figure 2 and Figure 3 As shown, in this embodiment, the second sealing ring 302 is movably disposed on the outside of the stepped collar 101, and the second thread 301 is fixedly installed at the other end of the outer surface of the valve stem 1. The threaded sleeve 303 is screwed onto the outside of the valve stem 1 through the second thread 301.

[0031] In practice, the second sealing ring 302 is placed on the outside of the stepped collar 101, and the threaded sleeve 303 is screwed on. When one end of the threaded sleeve 303 abuts against one end of the stepped collar 101, the threaded sleeve 303 presses the second sealing ring 302 with a certain pressure, thus fixing the second sealing ring 302. At the same time, this avoids friction between the second sealing ring 302 and the valve stem 1 during installation, reduces the pulling and twisting of the surface of the second sealing ring 302, and improves the sealing effect of the second sealing ring 302.

[0032] Example 2

[0033] Based on Embodiment 1, in order to compensate for the problem that the threaded sleeve 303 is not easy to rotate.

[0034] like Figure 4 As shown, in this embodiment, an auxiliary block 304 is fixedly installed at an equal angle on one end surface of the threaded sleeve 303.

[0035] In practice, multiple auxiliary blocks 304 make it easier for wrenches or pliers to grip the threaded sleeve 303 and make it easier for the threaded sleeve 303 to rotate and tighten.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A leak-proof fire extinguisher valve sealing structure, characterized in that, include: Valve stem (1); The first sealing assembly (2) is movably disposed on the outside of the valve stem (1). The first sealing assembly (2) includes a first sealing ring (201) movably sleeved on the outside of the valve stem (1). A gasket (203) is movably disposed on one side of the first sealing ring (201), and a nut (205) is movably disposed on one side of the gasket (203). The second sealing assembly (3) is movably disposed on the outside of the valve stem (1). The second sealing assembly (3) includes a second sealing ring (302) movably sleeved on the outside of the valve stem (1). A threaded sleeve (303) is movably disposed on one side of the second sealing ring (302).

2. The leak-proof fire extinguisher valve sealing structure according to claim 1, characterized in that, An auxiliary block (304) is fixedly installed at an equal angle on one end surface of the threaded sleeve (303).

3. The leak-proof fire extinguisher valve sealing structure according to claim 1, characterized in that, The valve stem (1) is fixedly provided with a No. 1 thread (206) at one end of its outer surface, and the nut (205) is screwed onto one end of the valve stem (1) through the No. 1 thread (206).

4. The leak-proof fire extinguisher valve sealing structure according to claim 1, characterized in that, A stepped collar (101) is fixedly installed on the outer surface of the valve stem (1), a first limiting ring (102) is fixedly installed on the outer surface of the valve stem (1) on one side of the stepped collar (101), and a second limiting ring (103) is fixedly installed on the outer surface of the valve stem (1) on one side of the stepped collar (101).

5. The leak-proof fire extinguisher valve sealing structure according to claim 4, characterized in that, The second sealing ring (302) is movably disposed on the outside of the stepped collar (101), and the other end of the outer surface of the valve stem (1) is fixedly installed with the second thread (301). The threaded sleeve (303) is screwed onto the outside of the valve stem (1) through the second thread (301).

6. The leak-proof fire extinguisher valve sealing structure according to claim 4, characterized in that, A compression ring (204) is fixedly embedded on one side surface of the gasket (203), and the second limiting ring (103) is movably inserted into the compression ring (204).

7. The leak-proof fire extinguisher valve sealing structure according to claim 6, characterized in that, The inner surface of the first sealing ring (201) is provided with a stepped groove (202), and the compression ring (204) is movably inserted into the stepped groove (202).

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