Fire extinguisher valve structure for preventing air leakage during disassembly and assembly of pressure gauge

Abstract

The utility model provides a fire extinguisher valve structure capable of preventing air leakage during dismounting of a pressure gauge, and relates to the technical field of fire extinguishers. A discharge port is formed in the left side of the valve main body; a connecting piece is arranged at the bottom end of the valve main body; a threaded sleeve opening is formed in the front side of the valve body, through mutual cooperation of the installation inner pipe and the limiting round rod and by utilizing the rebound pulling effect of the extension spring, the sealing gasket can rapidly seal the ventilation opening, and therefore the loading and unloading process of the pressure gauge body can be completed without pressure relief of a fire extinguisher; the fire extinguisher valve structure is simple in structure and safe and reliable to use and operate, and solves the problems that when a pressure gauge in an existing fire extinguisher valve structure goes wrong and needs to be maintained or replaced, pressure in a fire extinguisher needs to be released firstly, then the whole valve structure is detached, the operation process is tedious, and the operation cost is high. And the maintenance and use efficiency is low.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishers, in particular to a fire extinguisher valve structure capable of preventing a pressure gauge from leaking when disassembled. Background Art

[0002] Fire extinguisher valves are widely used in various fire extinguishers to ensure the rapid release of fire extinguishing agent when needed. Their simple operation and ability to quickly respond to emergencies make them a vital piece of fire safety equipment.

[0003] When a problem occurs with the pressure gauge in an existing fire extinguisher valve structure and maintenance or replacement is required, the internal pressure of the fire extinguisher must usually be relieved first, and then the entire valve structure must be disassembled. The operation process is cumbersome and the maintenance and use efficiency is low. Moreover, after the pressure gauge is removed, improper operation can easily allow foreign matter to enter the valve, causing internal corrosion and shortening the service life of the valve. Utility Model Content

[0004] The disclosed embodiment relates to a fire extinguisher valve structure that prevents air leakage during assembly and disassembly of a pressure gauge. By installing an inner tube and a limiting round rod that cooperate with each other and utilizing the rebound pulling action of a tension spring, the sealing gasket can quickly close the vent. It can be seen that the assembly and disassembly process of the pressure gauge body can be completed without relieving the pressure of the fire extinguisher, which saves the trouble of disassembling the entire valve body. The structure is simple and the operation is safe and reliable.

[0005] In a first aspect of the present disclosure, a fire extinguisher valve structure is provided for preventing leakage of a pressure gauge during disassembly and assembly, specifically comprising: a valve body, wherein a grip is provided on the top of the valve body; a discharge port is provided on the left side of the valve body; a connector is provided at the bottom end of the valve body; a threaded sleeve is provided on the front side of the valve body; a pressure gauge body is provided on the threaded sleeve; a connecting sleeve is fixedly installed in the threaded sleeve by means of threads; a limiting rod is provided in the connecting sleeve; and a fixing sleeve is provided on the limiting rod;

[0006] A threaded tube is provided in the middle of the rear part of the pressure gauge body, and the threaded tube is fixedly connected to the threaded sleeve through threads. A sealing ring is provided at the rear end of the threaded tube, and a first filter is provided in the middle of the sealing ring.

[0007] In at least some embodiments, the connecting sleeve is a cylindrical through-cavity structure, and the front end of the connecting sleeve matches the sealing ring. An installation inner tube is provided in the through-cavity of the connecting sleeve, and a limiting round rod passes through the installation inner tube.

[0008] In at least some embodiments, the inner circumference of the front end of the installation inner tube is provided with four limiting grooves, and the four limiting grooves are distributed in a circular array. A vent is provided at the rear end of the installation inner tube, and an annular bracket is fixedly installed in the middle position of the installation inner tube.

[0009] In at least some embodiments, the front end of the limiting rod is provided with a head, and the head is in contact with the first filter screen, the rear end of the limiting rod is provided with a sealing gasket, the limiting rod is provided with a tension spring, and the two ends of the tension spring are respectively connected to the sealing gasket and the annular bracket.

[0010] In at least some embodiments, when the pressure gauge body and the threaded sleeve are in a disassembled state, the sealing gasket of the limiting round rod is in contact with the vent.

[0011] In at least some embodiments, the fixed sleeve is a cylindrical through-cavity structure, and four limiting sliders are provided on the outer circumference of the fixed sleeve, and the four limiting sliders are distributed in a circular array. Second filter screens are provided at the front and rear ends of the fixed sleeve, and the two second filter screens are distributed symmetrically.

[0012] In at least some embodiments, the limiting round rod passes through the middle position of the two second filter screens, and the fixed sleeve is slidably connected to the limiting sliding groove of the inner tube through the limiting sliding block.

[0013] The utility model provides a fire extinguisher valve structure that prevents gas leakage when the pressure gauge is disassembled and assembled, and has the following beneficial effects:

[0014] In the utility model, by installing the inner tube and the limiting round rod to cooperate with each other and utilizing the rebound pulling effect of the tension spring, the sealing gasket can quickly close the vent. It can be seen that the assembly and disassembly process of the pressure gauge body can be completed without relieving the pressure of the fire extinguisher, which saves the trouble of disassembling the entire valve body. The structure is simple and the operation is safe and reliable.

[0015] In addition, a fixed sleeve is provided in the device. After the pressure gauge body is disassembled, the inner tube is protected by two second filters at the front and rear, effectively preventing foreign matter from entering the valve body, avoiding internal corrosion, and ensuring the reliability and service life of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0017] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0018] In the attached figure:

[0019] Figure 1 It shows a schematic diagram of the structure of the pressure gauge body and the valve body of the present application in the separated state;

[0020] Figure 2 Shows a schematic diagram of the pressure gauge body structure of the present application;

[0021] Figure 3 A schematic diagram of the structure of the connecting sleeve, limiting round rod and fixed sleeve of the present application is shown;

[0022] Figure 4 Shows the application Figure 3 The schematic diagram of the split state structure is derived;

[0023] Figure 5 A schematic diagram of the structure of the installed inner tube from a cross-sectional perspective of the present application is shown.

[0024] List of reference numerals:

[0025] 1. Valve body; 2. Grip; 3. Discharge port; 4. Connector; 5. Threaded sleeve; 6. Pressure gauge body; 601. Threaded pipe; 602. Sealing ring; 603. First filter; 7. Connecting sleeve; 701. Mounting inner tube; 702. Limiting slide; 703. Vent; 704. Ring bracket; 8. Limiting round rod; 801. Pin; 802. Sealing gasket; 803. Tension spring; 9. Fixed sleeve; 901. Limiting slider; 902. Second filter. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1: Please refer to Figures 1 to 5 :

[0028] The utility model proposes a fire extinguisher valve structure for preventing gas leakage during disassembly of a pressure gauge, comprising: a valve body 1, a grip 2 being provided on the top of the valve body 1; a discharge port 3 being provided on the left side of the valve body 1; a connector 4 being provided on the bottom end of the valve body 1; a threaded sleeve 5 being provided on the front side of the valve body 1; a pressure gauge body 6 being provided on the threaded sleeve 5; a connecting sleeve 7 being fixedly installed in the threaded sleeve 5 by means of threads; a limiting round rod 8 being provided in the connecting sleeve 7; and a fixing sleeve 9 being provided on the limiting round rod 8.

[0029] A threaded tube 601 is provided in the middle of the rear of the pressure gauge body 6, and the threaded tube 601 is fixedly connected to the threaded sleeve 5 by means of threads. A sealing ring 602 is provided at the rear end of the threaded tube 601, and a first filter screen 603 is provided in the middle of the sealing ring 602.

[0030] In the embodiment of the present disclosure, Figures 3 to 5 As shown, the connecting sleeve 7 is a cylindrical through-cavity structure, and the front end of the connecting sleeve 7 matches the sealing ring 602. An installation inner tube 701 is provided in the through-cavity of the connecting sleeve 7, and the limiting round rod 8 passes through the installation inner tube 701.

[0031] The inner circumference of the front end of the inner tube 701 is provided with four limiting grooves 702, and the four limiting grooves 702 are distributed in a circular array. The rear end of the inner tube 701 is provided with a vent 703, and an annular bracket 704 is fixedly installed in the middle of the inner tube 701.

[0032] The front end of the limiting rod 8 is provided with a head 801, and the head 801 contacts the first filter 603. The rear end of the limiting rod 8 is provided with a sealing gasket 802. The limiting rod 8 is provided with a tension spring 803, and the two ends of the tension spring 803 are respectively connected to the sealing gasket 802 and the annular bracket 704;

[0033] When the pressure gauge body 6 and the threaded sleeve 5 are in a disassembled state, the sealing gasket 802 of the limiting rod 8 is in contact with the vent 703. During the maintenance or replacement of the pressure gauge body 6, the threaded tube 601 is separated from the threaded sleeve 5. At the same time, by installing the inner tube 701 and the limiting rod 8 to cooperate with each other, and utilizing the rebound pulling effect of the tension spring 803, the sealing gasket 802 can quickly close the vent 703. It can be seen that the assembly and disassembly process of the pressure gauge body 6 can be completed without depressurizing the fire extinguisher, which saves the trouble of disassembling the entire valve body 1. It has a simple structure and is safe and reliable to use.

[0034] Example 2, based on Example 1, Figure 5 As shown, the fixed sleeve 9 is a cylindrical through-cavity structure, and the outer circumference of the fixed sleeve 9 is provided with four limit sliders 901, and the four limit sliders 901 are distributed in a circular array. Second filter screens 902 are provided at the front and rear ends of the fixed sleeve 9, and the two second filter screens 902 are distributed in a symmetrical manner.

[0035] The limiting round rod 8 passes through the middle position of the two second filter screens 902, and the fixed sleeve 9 is slidably connected to the limiting slide groove 702 of the installation inner tube 701 through the limiting slider 901. A fixed sleeve 9 is provided in this device. After the pressure gauge body 6 is disassembled, the installation inner tube 701 is protected by the front and rear second filter screens 902, effectively preventing external impurities from entering the valve body 1.

[0036] The working principle of this embodiment is as follows: during the maintenance or replacement of the pressure gauge body 6, the threaded tube 601 is separated from the threaded sleeve 5. At the same time, the inner tube 701 and the limiting round rod 8 cooperate with each other, and the rebound pulling effect of the tension spring 803 is utilized to enable the sealing gasket 802 to quickly close the vent 703. The assembly and disassembly process of the pressure gauge body 6 can be completed without depressurizing the fire extinguisher. After the disassembly of the pressure gauge body 6 is completed, the inner tube 701 is protected by the second filter screens 902 at the front and rear, effectively preventing external impurities from entering the valve body 1.

[0037] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A fire extinguisher valve structure that prevents leakage during disassembly of a pressure gauge, characterized in that: include: A valve body (1), wherein a grip (2) is provided on the top of the valve body (1); a discharge port (3) is provided on the left side of the valve body (1); a connector (4) is provided on the bottom end of the valve body (1); a threaded sleeve (5) is provided on the front side of the valve body (1); a pressure gauge body (6) is provided on the threaded sleeve (5); a connecting sleeve (7) is fixedly installed in the threaded sleeve (5) by means of threads; a limiting round rod (8) is provided in the connecting sleeve (7); a fixing sleeve (9) is provided on the limiting round rod (8); A threaded tube (601) is provided in the middle of the rear portion of the pressure gauge body (6), and the threaded tube (601) is fixedly connected to the threaded sleeve (5) by means of a thread. A sealing ring (602) is provided at the rear end of the threaded tube (601), and a first filter screen (603) is provided in the middle of the sealing ring (602).

2. A fire extinguisher valve structure for preventing gas leakage during disassembly of a pressure gauge according to claim 1, characterized in that: The connecting sleeve (7) is a cylindrical through-cavity structure, and the front end of the connecting sleeve (7) matches the sealing ring (602). An installation inner tube (701) is provided in the through-cavity of the connecting sleeve (7), and a limiting round rod (8) passes through the installation inner tube (701).

3. A fire extinguisher valve structure for preventing gas leakage during disassembly of a pressure gauge according to claim 2, characterized in that: The inner circumference of the front end of the installation inner tube (701) is provided with four limiting sliding grooves (702), and the four limiting sliding grooves (702) are distributed in a circular array. The rear end of the installation inner tube (701) is provided with a vent (703), and an annular bracket (704) is fixedly installed in the middle position of the installation inner tube (701).

4. A fire extinguisher valve structure for preventing gas leakage during disassembly of a pressure gauge according to claim 3, characterized in that: The front end of the limiting rod (8) is provided with a head (801), and the head (801) is in contact with the first filter screen (603). The rear end of the limiting rod (8) is provided with a sealing gasket (802). The limiting rod (8) is provided with a tension spring (803), and the two ends of the tension spring (803) are respectively connected to the sealing gasket (802) and the annular bracket (704).

5. A fire extinguisher valve structure for preventing gas leakage during disassembly of a pressure gauge according to claim 4, characterized in that: When the pressure gauge body (6) and the threaded sleeve (5) are in a disassembled state, the sealing gasket (802) of the limiting round rod (8) is in contact with the vent (703).

6. A fire extinguisher valve structure for preventing gas leakage during disassembly of a pressure gauge according to claim 5, characterized in that: The fixed sleeve (9) is a cylindrical through-cavity structure, and the outer peripheral surface of the fixed sleeve (9) is provided with four limiting sliders (901), and the four limiting sliders (901) are distributed in a circular array. The front and rear ends of the fixed sleeve (9) are provided with second filter screens (902), and the two second filter screens (902) are distributed in a symmetrical manner.

7. A fire extinguisher valve structure for preventing gas leakage during disassembly of a pressure gauge according to claim 6, characterized in that: The limiting round rod (8) passes through the middle position of the two second filter screens (902), and the fixed sleeve (9) is slidably connected to the limiting sliding groove (702) of the mounting inner tube (701) through the limiting sliding block (901).

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