Quick-inserted valve anti-opening device for fire extinguisher
The quick-connect fire extinguisher valve anti-opening device solves the problem of inconvenient valve opening by using the interlocking structure of the pin block with the handle and pressure handle. It achieves a conspicuous structure and simple operation, making it suitable for the general public and improving safety and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU JINOU FIRE EQUIP CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-05
AI Technical Summary
Existing fire extinguisher valves have complex opening mechanisms, making them inconvenient to use. They require considerable force or tools and are not easily visible, making them difficult for ordinary people to operate.
The quick-connect fire extinguisher valve anti-opening device uses a pin block that lies between the handle and the lever, combined with the handle and the insert structure to ensure a stable connection. The anti-opening function is achieved through the pin block and the multiple insert structures of the handle and lever.
With its simple and easy-to-read design, it is easy to operate and suitable for the general public, especially children and women, to easily open, preventing accidental activation of the fire extinguisher and improving safety and reliability.
Smart Images

Figure CN224326775U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a fire extinguisher assembly, and more particularly to a quick-connect fire extinguisher valve anti-opening device. Background Technology
[0002] Under current technology, the opening and closing mechanisms of fire extinguisher valves generally fall into the following categories:
[0003] 1. Insurance pin (safety pin)
[0004] A metal pin is inserted into the valve handle; it must be pulled out before the handle can be pressed. It is usually accompanied by a plastic seal (tamper-evident mark) to ensure it has not been used.
[0005] 2. Locking clip or locking lever
[0006] The valve handle is fixed by a metal clip or lever structure, which requires special tools to remove (such as a break-lock type). It is mostly used for theft prevention of fire extinguishers in public places.
[0007] 3. Threaded protective cap
[0008] The threaded cap covering the valve outlet must be unscrewed before connecting the nozzle to prevent the valve from being accidentally triggered.
[0009] 4. Pressure-sensitive device
[0010] Some valves have built-in pressure locks that automatically lock when the fire extinguisher is not pressurized, and operate normally after being pressurized (requires activation by professional filling equipment).
[0011] The above-mentioned common release and opening devices generally have the following shortcomings:
[0012] Its complex structure requires considerable strength or the use of auxiliary equipment to open, making it very inconvenient.
[0013] The opening device is not conspicuous enough, especially for safety pin products. Users often mistake it for part of the product and dare not operate it. Summary of the Invention
[0014] To address the problems of existing technologies, this utility model provides a quick-connect fire extinguisher valve anti-opening device. Its structure not only prevents fire hydrants from being accidentally opened, but also has a simple and conspicuous design, making it easy for users to operate. Even children or women can easily open it.
[0015] The technical solution adopted in this utility model is as follows:
[0016] A quick-connect fire extinguisher valve anti-opening device includes a handle and a lever hinged together. The front end of the lever is linked to the fire extinguisher valve. A pin block is inserted between the handle and the lever. The pin block is partially inserted into the handle and the lever, thus spanning between the handle and the lever to achieve the purpose of preventing opening.
[0017] Preferably, the latch block includes a body, with a handle portion for gripping at the rear of the body, and a stop post provided on one side of the middle portion of the body, the stop post engaging with a groove on the handle.
[0018] Preferably, a slot is provided from the front of the main body to the center of the main body, and the slot is inserted into the insert part inside the pressure handle.
[0019] Preferably, the latch block has a prompt text area.
[0020] Preferably, the handle is provided with an outer pin hole, and the pin block is provided with an inner pin hole that matches the outer pin hole. The outer pin hole and the inner pin hole are used to insert a safety pin.
[0021] The beneficial effects of the technical solution provided by this utility model are:
[0022] This utility model discloses a quick-connect fire extinguisher valve anti-opening device. It utilizes a pin block positioned between the handle and the pressure handle to prevent abnormal deformation of the pressure handle under external force, which could lead to unauthorized opening of the fire extinguisher valve. The pin block replaces the original anti-opening structure, making it not only more visually appealing but also easier to operate due to its convenient handle. Multiple interlocking structures between the pin block, the pressure handle, and the handle ensure the stability of the connection, making the entire anti-opening structure safer and more reliable. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a three-dimensional view of the overall structure of a quick-connect fire extinguisher valve anti-opening device according to the present invention;
[0025] Figure 2 This is a partial three-dimensional view of a quick-connect fire extinguisher valve anti-opening device according to the present invention;
[0026] Figure 3 This is a perspective view of the pin block structure of a quick-connect fire extinguisher valve anti-opening device according to this utility model;
[0027] Figure 4 This is a three-dimensional view of the pressure handle structure of a quick-connect fire extinguisher valve anti-opening device according to the present invention. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0029] Example 1, as attached Figure 1-4 As shown in the figure, a quick-connect fire extinguisher valve anti-opening device of this embodiment includes a handle 1 and a pressure handle 2 hinged together. The front end of the pressure handle 2 is linked to the valve of the fire extinguisher. A pin block 3 is inserted between the handle 1 and the pressure handle 2. The pin block 3 is partially inserted into the handle 1 and the pressure handle 2 respectively, thereby spanning between the handle 1 and the pressure handle 2 to achieve the purpose of preventing opening.
[0030] The pin block 3 in this embodiment includes a body 31, and a handle portion 32 for gripping is provided at the rear of the body 31. A stop post 33 is provided on one side of the middle part of the body 31, and the stop post 33 is engaged with the groove 11 on the handle 1.
[0031] In this embodiment, a slot 34 is provided from the front of the main body 31 to the center of the main body 31. The slot 34 is engaged with the insert part 21 inside the pressure handle 2.
[0032] To make the prompts on the latch block 3 more prominent, a prompt text area can be set on the latch block 3, or its color contrast can be changed.
[0033] To ensure the stability of the entire pin block structure, the entire anti-opening structure can be further locked by a safety pin: the handle 1 is provided with an outer pin hole 12, and the pin block 3 is provided with an inner pin hole 35 that matches the outer pin hole 12. The outer pin hole and the inner pin hole are used to insert the safety pin.
[0034] In this embodiment, the anti-opening structure can be used by simply gripping the handle 32 and pulling it backward to disengage the pin block 3 from the space between the handle 1 and the pressure handle 2, thereby allowing the pressure handle 2 to press down the fire extinguisher valve at any time.
[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A quick-connect fire extinguisher valve anti-opening device, comprising a handle and a pressure handle hinged together, wherein the front end of the pressure handle is linked to the fire extinguisher valve, characterized in that, A pin is inserted between the handle and the lever, and the pin is partially inserted into the handle and the lever respectively, thus spanning between the handle and the lever to prevent opening.
2. The quick-connect fire extinguisher valve anti-opening device according to claim 1, characterized in that, The pin block includes a body, a handle for gripping at the rear of the body, and a stop post on one side of the middle of the body, which engages with a groove on the handle.
3. The quick-connect fire extinguisher valve anti-opening device according to claim 2, characterized in that, A slot is provided from the front of the main body to the center of the main body, and the slot is inserted into the insert part inside the pressure handle.
4. The quick-connect fire extinguisher valve anti-opening device according to claim 1, characterized in that, The aforementioned pin block is provided with a prompt text area.
5. The quick-connect fire extinguisher valve anti-opening device according to claim 1, characterized in that, The handle is provided with an outer pin hole, and the pin block is provided with an inner pin hole that matches the outer pin hole. The outer pin hole and the inner pin hole are used to insert a safety pin.