Flow-limiting fire extinguisher valve body with leakage-proof structure

Abstract

The utility model discloses a flow-limiting fire extinguisher valve body with a leak-proof structure, which comprises a shell, and an inner mounting port for a handle and an outer mounting port for the handle are arranged at the top of the shell. According to the utility model, the first anti-leakage groove and the second anti-leakage groove are sequentially arranged on one side of the external suction pipe reserved opening and one side of the mounting opening for the pressure gauge; a first sealing ring made of high-temperature-resistant fluororubber adheres to the interior of the first anti-leakage groove, a second sealing ring made of water absorption expansion resin adheres to the interior of the second anti-leakage groove, the double design of the main sealing and the auxiliary sealing is adopted, when the main sealing fails, leakage can still be prevented through the auxiliary sealing, and double-sealing protection is achieved; and after a user assembles the handle, a one-way valve on an inflation reserved pipe is opened, gas is inflated into a sealing air bag piece fixed into an inner mounting opening for the handle, the sealing air bag piece is made to be attached to and press the outer wall of the handle, and then good elastic sealing protection is achieved for the handle mounting part.

Description

Technical Field

[0001] This utility model relates to the technical field of fire extinguisher valve body structure, specifically a flow-limiting fire extinguisher valve body with a leak-proof structure. Background Technology

[0002] Fire extinguisher valves are an indispensable key component of fire extinguishers, and flow-limiting fire extinguisher valves are a relatively common type. They control the flow and regulate the pressure through a flow-limiting valve core installed inside the valve body, which helps to improve the fire extinguishing efficiency and safety reliability of the fire extinguisher. However, there are still some defects in the current flow-limiting fire extinguisher valves.

[0003] For example, the fire extinguisher valve body disclosed in application number 201420375450.4 contains five layers of material. From the inside out, the core is made of zinc alloy, forming the main body of the valve body. The second to fourth layers are plating layers, which are nickel, copper, and imitation gold materials, respectively. The fifth layer is a sealant, which is a special varnish. After mass production, this type of fire extinguisher valve body can save a lot of brass, greatly reducing the cost of raw materials. At the same time, the safety performance of the fire extinguisher can be guaranteed, and the valve body has a good appearance. However, it is still difficult to perform targeted and comprehensive sealing treatment on different external interfaces of the valve body, which affects the leakage protection effect of the device. Furthermore, during use, the extinguishing medium can easily come into contact with the pressure gauge probe, causing contamination. In addition, the inlet end of the extinguishing medium is easily damaged due to excessive impact force. Based on this, we propose a new type of flow-limiting fire extinguisher valve body with a leakage-proof structure. Utility Model Content

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

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flow-limiting fire extinguisher valve body with a leak-proof structure, comprising a housing, the top of which is provided with an inner mounting port for a handle and an outer mounting port for a handle. A sealing airbag is fixed to the inner side wall of the inner mounting port for the handle. A deflation pre-installation pipe and an inflation pre-installation pipe are sequentially arranged at the top edge of the sealing airbag. A one-way valve is installed on both the deflation pre-installation pipe and the inflation pre-installation pipe. A pressure gauge mounting port is provided on one side of the housing, and a protective filter plate is installed inside the pressure gauge mounting port. The protective filter plate has evenly spaced positioning slots along its edges. The pressure gauge mounting port is fixed with a positioning strip that matches the positioning slot. One end of the housing has an external suction tube pre-reservation port. Both the external suction tube pre-reservation port and the pressure gauge mounting port have a first anti-leakage groove and a second anti-leakage groove on one side. A first sealing ring is bonded inside the first anti-leakage groove, and a second sealing ring is bonded inside the second anti-leakage groove. A fixing arm is welded inside the external suction tube pre-reservation port, and a buffer fan blade is movably connected to the fixing arm via a bearing.

[0006] Preferably, the outer wall of the housing is provided with a chrome-plated anti-corrosion layer.

[0007] Preferably, the first sealing ring is made of high-temperature resistant fluororubber.

[0008] Preferably, the second sealing ring is made of water-absorbing and swelling resin.

[0009] Preferably, both the positioning slot and the positioning insert are provided with a magnetic adsorption layer, which improves the firmness of the connection between the positioning slot and the positioning insert.

[0010] Preferably, the inner walls of the pressure gauge mounting port and the external suction tube pre-reserved port are both provided with an internal thread layer.

[0011] Preferably, a polypropylene filter cloth is fixed inside the protective filter plate.

[0012] Preferably, one end of both the venting pre-reserved tube and the inflation pre-reserved tube is threaded with a sealing plug.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The valve body of this flow-limiting fire extinguisher with a leak-proof structure optimizes its structure by installing a housing, etc. On the one hand, a first leak-proof groove and a second leak-proof groove are sequentially set on one side of the external suction tube reserved port and the pressure gauge installation port. A first sealing ring made of high-temperature resistant fluororubber is bonded inside the first leak-proof groove, and a second sealing ring made of water-absorbing and expanding resin is bonded inside the second leak-proof groove. The dual design of main seal and secondary seal ensures that the secondary seal can still prevent leakage when the main seal fails, thus achieving efficient sealing protection for the easily leaking external parts of the housing surface. On the other hand, the user installs the fire extinguisher handle on the handle. Between the inner mounting port and the outer mounting port of the handle, the handle will enter the housing through the inner mounting port of the handle. Considering that there will be gaps in the inner mounting port of the handle when pressing the handle to operate the fire extinguisher, which may easily lead to leakage problems, after assembling the handle, the user opens the one-way valve on the inflation tube and inflates the gas into the sealing airbag fixed inside the inner mounting port of the handle. This causes the sealing airbag to fit tightly against the outer wall of the handle. Then, by using the elastic sealing structure added between the inner mounting port of the handle and the handle, the sealing and leakage prevention protection effect of the operating position on the upper surface of the housing is optimized. This allows the device to achieve a targeted sealing structure for different positions of the housing, which is conducive to achieving comprehensive leakage prevention protection.

[0015] (2) The flow-limiting fire extinguisher valve body with anti-leakage structure is equipped with a protective filter plate, etc., so that when the device is actually operated, the user can use the plug-in fixing structure composed of positioning slot and positioning insert to add the protective filter plate to the end of the pressure gauge installation port, and then screw on the pressure gauge. After the pressure gauge is installed, it will press and fix the protective filter plate. This makes the device realize the advantages of split and assembleable. In addition, the polypropylene filter cloth inside the protective filter plate can protect the fire extinguishing medium from contacting and adhering to the pressure gauge installation port probe while the pressure gauge detects the pressure, thus preventing pollution and damage.

[0016] (3) The flow-limiting fire extinguisher valve body with anti-leakage structure is equipped with buffer fan blades, so that when the device is used, a fixed arm is welded inside the reserved port of the external suction pipe, and a buffer fan blade is movably connected to the fixed arm through a bearing. After the fire extinguishing medium is rushed into the reserved port of the external suction pipe through the external suction pipe, the impact force generated by the fire extinguishing medium will drive the buffer fan blade to rotate along the fixed arm. This can both buffer and protect the feed end of the device, and achieve the mixing and inward guiding effect of the fire extinguishing medium through the stirring of the buffer fan blade, thus optimizing the feeding effect. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2This is a side view of the structure of this utility model;

[0019] Figure 3 This is a side view of the external straw opening of this utility model.

[0020] Figure 4 This is a front view cross-sectional structural diagram of the mounting port for the pressure gauge of this utility model;

[0021] Figure 5 This is a top view of a partial cross-sectional structure of the inner mounting port for the handle of this utility model.

[0022] In the diagram: 1. External mounting port for handle; 2. Internal mounting port for handle; 3. Mounting port for pressure gauge; 4. Housing; 6. External suction tube reserved port; 7. Buffer fan blade; 8. Fixed arm; 9. Second anti-leakage groove; 10. Second sealing ring; 11. First anti-leakage groove; 12. First sealing ring; 13. Protective filter plate; 14. Positioning slot; 15. Positioning insert; 16. Sealing plug; 17. Sealing airbag component; 18. Inflation reserved pipe; 19. One-way valve; 20. Deflator reserved pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figure 1-5 An embodiment of this utility model is provided: a flow-limiting fire extinguisher valve body with a leak-proof structure, including a shell 4. The top of the shell 4 is provided with an inner mounting port 2 for the handle and an outer mounting port 1 for the handle. A sealing airbag component 17 is fixed to the inner side wall of the inner mounting port 2 for the handle. A deflation pre-reserved pipe 20 and an inflation pre-reserved pipe 18 are arranged sequentially at the top edge of the sealing airbag component 17. A one-way valve 19 is installed on both the deflation pre-reserved pipe 20 and the inflation pre-reserved pipe 18.

[0025] When in use, the user installs the fire extinguisher handle between the inner mounting port 2 and the outer mounting port 1 of the handle. At this time, the handle will enter the interior of the housing 4 through the inner mounting port 2 of the handle. Considering that there will be gaps in the inner mounting port 2 of the handle when pressing the handle to operate the fire extinguisher, which may easily lead to leakage problems, after assembling the handle, the user opens the one-way valve 19 on the inflation pre-reserved pipe 18 to inflate the sealed airbag 17 fixed inside the inner mounting port 2 of the handle with gas, so that the sealed airbag 17 fits and presses tightly against the outer wall of the handle. In this way, the elastic sealing structure added between the inner mounting port 2 of the handle and the handle optimizes the sealing and leakage prevention protection effect of the operating position on the upper surface of the housing 4.

[0026] A pressure gauge mounting port 3 is provided on one side of the housing 4. A protective filter plate 13 is installed inside the pressure gauge mounting port 3. Positioning slots 14 are evenly arranged on the edge of the protective filter plate 13. A positioning insert 15 that matches the positioning slot 14 is fixed on the pressure gauge mounting port 3.

[0027] The protective filter plate 13 has a polypropylene filter cloth fixed inside;

[0028] In use, the user can use the plug-in fixing structure formed by the positioning slot 14 and the positioning insert 15 to add a protective filter plate 13 to the end of the pressure gauge mounting port 3, and then screw on the pressure gauge. After the pressure gauge is installed, it will press and fix the protective filter plate 13. This makes the device have the advantages of being split and assembleable. Furthermore, the polypropylene filter cloth inside the protective filter plate 13 can protect the pressure gauge from contact with and adhesion of the fire extinguishing medium to the probe of the pressure gauge mounting port 3, thus preventing pollution and damage.

[0029] One end of the housing 4 is provided with an external suction tube reserved port 6. The external suction tube reserved port 6 and the pressure gauge mounting port 3 are respectively provided with a first anti-leakage groove 11 and a second anti-leakage groove 9 on one side. A first sealing ring 12 is bonded inside the first anti-leakage groove 11, and a second sealing ring 10 is bonded inside the second anti-leakage groove 9. A fixing arm 8 is welded inside the external suction tube reserved port 6, and a buffer fan blade 7 is movably connected to the fixing arm 8 through a bearing.

[0030] The outer wall of the housing 4 is provided with a chrome-plated anti-corrosion layer;

[0031] The first sealing ring 12 is made of high-temperature resistant fluororubber;

[0032] The second sealing ring 10 is made of water-absorbing and expanding resin;

[0033] In use, a first anti-leakage groove 11 and a second anti-leakage groove 9 are sequentially provided on one side of the external suction tube reserved port 6 and the pressure gauge installation port 3. A first sealing ring 12 made of high temperature resistant fluororubber is bonded inside the first anti-leakage groove 11, and a second sealing ring 10 made of water-absorbing and expanding resin is bonded inside the second anti-leakage groove 9. The dual design of main seal and secondary seal is adopted. When the main seal fails, the secondary seal can still prevent leakage, ensuring that the external parts of the shell 4 that are prone to leakage are effectively sealed and protected.

[0034] Both the positioning slot 14 and the positioning insert 15 are provided with a magnetic adsorption layer, which improves the firmness of the connection between the positioning slot 14 and the positioning insert 15.

[0035] The inner walls of the pressure gauge mounting port 3 and the external suction tube reserved port 6 are both provided with an internal thread layer;

[0036] Both the venting pre-installed tube 20 and the inflation pre-installed tube 18 have a sealing plug 16 threaded to one end.

[0037] In use, the device is first assembled on top of the fire extinguisher. In actual use, a first anti-leakage groove 11 and a second anti-leakage groove 9 are sequentially provided on one side of the external suction tube pre-reserved port 6 and the pressure gauge installation port 3. A first sealing ring 12 made of high-temperature resistant fluororubber is bonded inside the first anti-leakage groove 11, and a second sealing ring 10 made of water-absorbing and expanding resin is bonded inside the second anti-leakage groove 9. This dual design of main and secondary seals ensures that even if the main seal fails, the secondary seal can still prevent leakage, thus guaranteeing that the easily leaking external parts on the surface of the housing 4 are protected. For efficient sealing and protection, on the other hand, when the user installs the fire extinguisher handle between the inner mounting port 2 and the outer mounting port 1, the handle will enter the housing 4 through the inner mounting port 2. Considering that there will be gaps in the inner mounting port 2 when pressing the handle to operate the fire extinguisher, which may easily lead to leakage, the user, after assembling the handle, opens the one-way valve 19 on the inflation pre-installed pipe 18 to inflate the sealing airbag 17 fixed inside the inner mounting port 2, so that the sealing airbag 17 fits tightly against the outer wall of the handle, thereby utilizing the space between the inner mounting port 2 and the handle. The added elastic sealing structure optimizes the sealing and leak-proof protection effect of the operating position on the upper surface of the housing 4. This allows the device to achieve targeted sealing structures for different positions on the housing 4, which is conducive to achieving comprehensive leak-proof protection. At the same time, the user can use the plug-in fixing structure composed of the positioning slot 14 and the positioning insert 15 to add a protective filter plate 13 to the tail end inside the pressure gauge mounting port 3, and then screw on the pressure gauge. After the pressure gauge is installed, it will press and fix the protective filter plate 13. This makes the device achieve the advantage of being a split and assembleable unit. Furthermore, the polypropylene filter cloth inside the protective filter plate 13 can provide pressure protection. While detecting the pressure, it also protects against contamination and damage caused by the contact and adhesion of the extinguishing medium to the pressure gauge probe via the installation port 3. In addition, by welding a fixed arm 8 inside the reserved port 6 of the external suction tube, and movably connecting a buffer fan blade 7 to the fixed arm 8 via a bearing, the impact force generated by the extinguishing medium after it enters the reserved port 6 of the external suction tube will drive the buffer fan blade 7 to rotate along the fixed arm 8. This not only buffers and protects the feed end of the device, but also mixes and guides the extinguishing medium inward through the agitation of the buffer fan blade 7, thus optimizing the feeding effect.

Claims

1. A flow-restricted fire extinguisher valve body having a leak-proof structure, characterized in that, The utility model provides a kind of pressure gauge, including shell (4), the top of shell (4) is provided with handle inner mounting mouth (2) and handle outer mounting mouth (1), the inner side wall of handle inner mounting mouth (2) is fixed with sealing air bag piece (17), the edge of the top of sealing air bag piece (17) is sequentially provided with deflation reserve pipe (20) and inflation reserve pipe (18), one-way valve (19) is installed on deflation reserve pipe (20) and inflation reserve pipe (18), one side of shell (4) is provided with pressure gauge mounting mouth (3), pressure gauge mounting mouth (3) is internally mounted with protective filter plate (13), the edge of protective filter plate (13) is uniformly provided with positioning slot (14), the positioning slot (14) of pressure gauge mounting mouth (3) is fixed with and matched with positioning slot (14) positioning slot (15), one end of shell (4) is provided with external suction tube reserve mouth (6), external suction tube reserve mouth (6) and one side of pressure gauge mounting mouth (3) are sequentially provided with first anti-leakage groove (11) and second anti-leakage groove (9), the inside of first anti-leakage groove (11) is bonded with first sealing ring (12), the inside of second anti-leakage groove (9) is bonded with second sealing ring (10), the inside of external suction tube reserve mouth (6) is welded with fixed arm (8), the fixed arm (8) is movably connected with buffer fan blade (7) by bearing.

2. The flow-restricted fire extinguisher valve body with a leak-proof structure according to claim 1, characterized in that: The outer side wall of the shell (4) is provided with a chromium plating corrosion-resistant layer.

3. The flow-restricted fire extinguisher valve body with a leak-proof structure according to claim 1, characterized in that: The first sealing ring (12) is made of high-temperature-resistant fluorine rubber.

4. The flow-restricted fire extinguisher valve body with a leak-proof structure according to claim 1, characterized in that: The second sealing ring (10) is made of water-absorbing and expanding resin.

5. The flow-restricted fire extinguisher valve body with a leak-proof structure according to claim 1, characterized in that: The positioning slot (14) and the positioning slot (15) are both provided with a magnetic adsorption layer.

6. The flow-restricted fire extinguisher valve body with a leak-proof structure according to claim 1, characterized in that: The inner side wall of the pressure gauge mounting mouth (3) and the external suction tube reserve mouth (6) is provided with an internal thread layer.

7. The flow-restricted fire extinguisher valve body with a leak-proof structure according to claim 1, characterized in that: The protective filter plate (13) is internally fixed with a polypropylene filter cloth.

8. The flow-restricted fire extinguisher valve body with a leak-proof structure according to claim 1, characterized in that: One end of the deflation reserve pipe (20) and the inflation reserve pipe (18) is threadedly connected with a sealing plug (16).

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