Fire extinguisher safety device

Abstract

The utility model discloses a fire extinguisher safety device which comprises a safety pin, a locking copper wire and a fixing head, the safety pin is inserted into a fire extinguisher, an insertion hole is formed in the tail end of the safety pin, the locking copper wire penetrates through the insertion hole to prevent the safety pin from being separated from the fire extinguisher, and the fixing head is arranged on the locking copper wire to prevent the locking copper wire from being separated from the safety pin. The design mode of locking the copper wire and the fixing head is adopted, the problem of lead sealing and plastic sealing is effectively solved, the fire extinguisher safety pin is simple in structure, convenient to operate, not prone to falling off and high in safety, the function of the fire extinguisher safety pin can be well guaranteed, and the releasing force of the fire extinguisher safety pin can meet the requirement.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire-fighting equipment, and in particular relates to a fire extinguisher safety device. Background Art

[0002] Fire extinguishers are portable fire-fighting tools that contain chemicals. Different types of fire extinguishers contain different ingredients. Fire extinguishers are usually stored in public places or places where fires may occur. They are designed for different fire causes and are used to put out fires. There are many types of fire extinguishers. According to their mobility, they can be divided into: portable and cart-type; according to the power source of the fire extinguishing agent, they can be divided into: gas cylinder type, pressure storage type and chemical reaction type; according to the fire extinguishing agent filled, they can be divided into: foam fire extinguishers, dry powder fire extinguishers, carbon dioxide fire extinguishers and water-based fire extinguishers, etc.

[0003] The extinguishing agent in water-based fire extinguishers is mainly clean water. Water has low viscosity, high thermal stability, high density and high surface tension at room temperature. It mainly relies on cooling and suffocation to extinguish fire. The extinguishing agent in water-based fire extinguishers is mainly clean water. Water has low viscosity, high thermal stability, high density and high surface tension at room temperature. It mainly relies on cooling and suffocation to extinguish fire. Because every kilogram of water can absorb 2593.4KJ of heat when heated from room temperature to boiling point and completely evaporated and vaporized. Therefore, it uses its own ability to absorb sensible heat and latent heat to play a cooling and fire-extinguishing role, which is unmatched by other fire extinguishing agents. In addition, the water vapor formed after water is vaporized is an inert gas, and its volume will expand by about 1700 times. When extinguishing a fire, the water vapor generated by water vaporization will occupy the space in the combustion area, dilute the oxygen content around the burning object, hinder fresh air from entering the combustion area, and greatly reduce the oxygen concentration in the combustion area, thereby achieving the purpose of suffocation and extinguishing fire. When water is sprayed in a mist, the specific surface area of ​​the water droplets and mist droplets formed will be greatly increased, which will enhance the heat exchange between water and fire, thereby strengthening its cooling and suffocating effects. In addition, it can also dilute some flammable and combustible liquids that are easily soluble in water; the water mist produced by the strong jet can emulsify the flammable and combustible liquids, rapidly cool the liquid surface, and reduce the rate of combustible vapor generation to achieve the purpose of extinguishing the fire. Water-based fire extinguishers are widely used because of their ease of use and low cost.

[0004] Existing fire extinguishers basically have a safety device added to the valve to prevent the fire extinguisher from being accidentally activated. Traditional safety devices use lead seals, but lead seals are not an environmentally friendly material and are no longer allowed to be used in many industries, especially in the automotive industry. Therefore, plastic seals have appeared on the market. For example, the prior art CN210118521U discloses an anti-counterfeiting safety structure for a fire extinguisher valve, including a safety bolt and an anti-counterfeiting label; the safety bolt includes an insertion pin and a pull ring; the anti-counterfeiting label is attached to the end of the insertion pin away from the pull ring, and is provided with a protrusion perpendicular to the axis of the insertion pin, and the protrusion is marked with anti-counterfeiting information. By replacing conventional anti-counterfeiting plastic pins with anti-counterfeiting labels for anti-counterfeiting packaging, it is not necessary to process small holes on the safety bolt, saving the processing cost of the safety bolt. After the safety bolt is inserted into the fire extinguisher valve handle, it is packaged by an automatic labeling machine, which can realize automated production and effectively solve the problem of manual assembly when using anti-counterfeiting plastic pins. When using the fire extinguisher, the safety pin is directly pulled out, and the protruding part of the anti-counterfeiting label is torn and destroyed, thus realizing the anti-counterfeiting packaging of the fire extinguisher safety pin for single use, which is simple and easy to use. However, the plastic packaging in the prior art has the disadvantages of poor low temperature resistance and freezing cracking, which easily leads to the failure of the insurance. Utility Model Content

[0005] The purpose of the utility model is to provide a fire extinguisher safety device to solve the above problems existing in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fire extinguisher safety device, including a safety pin, a locking copper wire and a fixed head, the safety pin is inserted into the fire extinguisher, a socket is provided at the end of the safety pin, the locking copper wire is passed through the socket to prevent the safety pin from detaching from the fire extinguisher, and the fixed head is arranged on the locking copper wire to prevent the locking copper wire from detaching from the safety pin.

[0007] As an optional implementation of the above technical solution, one end of the locking copper wire is fixed on the fixing head, and the other end of the locking copper wire is movably connected to the fixing head.

[0008] As an optional implementation of the above technical solution, the locking copper wire is U-shaped.

[0009] As an optional implementation of the above technical solution, the fixed head includes a fixed shell, a first clamping plate and a second clamping plate are arranged inside the fixed shell, and one end of the locking copper wire is passed through the first clamping plate and the second clamping plate; the first clamping plate is connected to a pressing head and an elastic return member, and the elastic return member is used to drive the first clamping plate to move toward the second clamping plate to clamp the locking copper wire; the pressing head is used to drive the first clamping plate away from the second clamping plate to loosen the locking copper wire.

[0010] As an optional implementation of the above technical solution, the pressing head includes a head and a rod, one end of the rod is connected to the head, and the other end of the rod passes through the second clamping plate and then is connected to the first clamping plate.

[0011] As an optional implementation of the above technical solution, a circular groove is provided in the fixed shell, and the head is slidably matched with the inner wall of the circular groove.

[0012] As an optional implementation of the above technical solution, a guide hole adapted to the rod portion is provided on the second clamping plate.

[0013] As an optional implementation of the above technical solution, the elastic return member includes a return spring, one end of the return spring is connected to the first clamping plate, and the other end of the return spring is connected to the inner wall of the fixed shell.

[0014] As an optional implementation of the above technical solution, the surfaces of the first clamping plate and the second clamping plate on one side close to each other are both provided with anti-slip pads.

[0015] As an optional implementation of the above technical solution, the fixed shell is made of PVC.

[0016] The beneficial effects of the utility model are:

[0017] The utility model provides a fire extinguisher safety device, including a safety pin, a locking copper wire and a fixed head, wherein the locking copper wire is inserted into the jack to prevent the safety pin from being separated from the fire extinguisher, and the fixed head is arranged on the locking copper wire to prevent the locking copper wire from being separated from the safety pin. The utility model adopts the design mode of the locking copper wire and the fixed head, effectively solves the problems existing in lead sealing and plastic sealing, has a simple structure, is easy to operate, is not easy to fall off, has high safety, can well ensure the function of the fire extinguisher safety pin, and its release force can also meet the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a fire extinguisher safety device in one embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a safety pin in one embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a locking copper wire and a fixing head in one embodiment of the utility model.

[0021] In the figure: 1-safety pin; 2-locking copper wire; 3-fixed head; 4-jack; 5-fixed housing; 6-first clamping plate; 7-second clamping plate; 8-pressing head; 9-elastic recovery member. DETAILED DESCRIPTION

[0022] like Figure 1-Figure 3 As shown, this embodiment provides a fire extinguisher safety device, including a safety pin 1, a locking copper wire 2 and a fixing head 3. The safety pin 1 is inserted into the fire extinguisher to prevent the fire extinguisher from being accidentally activated. A plug hole 4 is provided at the end of the safety pin 1. The locking copper wire 2 is inserted into the plug hole 4 to prevent the safety pin 1 from being separated from the fire extinguisher. The fixing head 3 is arranged on the locking copper wire 2 to prevent the locking copper wire 2 from being separated from the safety pin 1.

[0023] like Figure 1 and Figure 2 As shown, one end of the safety pin 1 has a pull ring, and the other end of the safety pin 1 has a socket 4. The safety pin 1 is inserted into the valve of the fire extinguisher, and the locking copper wire 2 is inserted into the socket 4 of the safety pin 1. The fixed head 3 is connected to the locking copper wire 2 to prevent the locking copper wire 2 from being separated from the safety pin 1, thereby providing protection for the safety pin 1. One end of the locking copper wire 2 is separated from the fixed head 3, and the locking copper wire 2 is moved. After the locking copper wire 2 is separated from the socket 4 of the safety pin 1, the safety pin 1 is pulled out through the pull ring, and the fire extinguisher can be used.

[0024] The utility model adopts the design mode of locking copper wire 2 and fixing head 3, which effectively solves the problems existing in lead seal and plastic seal, has simple structure, is easy to operate, is not easy to fall off, has high safety, can well ensure the function of fire extinguisher safety pin 1, and its release force can also meet the requirements.

[0025] In a specific embodiment, one end of the locking copper wire 2 is fixed on the fixed head 3, and the other end of the locking copper wire 2 is movably connected to the fixed head 3. The locking copper wire 2 can be bent, and the locking copper wire 2 is usually U-shaped. The fixed end of the locking copper wire 2 is fixed on the fixed head 3, and the movable end of the locking copper wire 2 passes through the socket 4 of the safety pin 1 and is connected to the fixed head 3, so as to realize the fixing function of the safety pin 1 and prevent the safety pin 1 from being separated from the fire extinguisher. When the fire extinguisher is needed, the movable end of the locking copper wire 2 is separated from the fixed head 3, and the movable end of the locking copper wire 2 is passed through the socket 4 of the safety pin 1, so that the locking copper wire 2 is separated from the safety pin 1. After the locking copper wire 2 is separated from the safety pin 1, the safety pin 1 is pulled out through the pull ring, and the fire extinguisher is used to extinguish the fire.

[0026] like Figure 3As shown, specifically, the fixing head 3 includes a fixing shell 5, and the fixing shell 5 is made of PVC. A first clamping plate 6 and a second clamping plate 7 are arranged inside the fixing shell 5, and one end of the locking copper wire 2 is inserted between the first clamping plate 6 and the second clamping plate 7, and a non-slip pad is arranged on the surface of the first clamping plate 6 and the second clamping plate 7 on the side close to each other. The first clamping plate 6 is connected to a pressing head 8 and an elastic restoring member 9, and the elastic restoring member 9 is used to drive the first clamping plate 6 to move toward the second clamping plate 7 to clamp the locking copper wire 2; the pressing head 8 is used to drive the first clamping plate 6 away from the second clamping plate 7 to loosen the locking copper wire 2. The first clamping plate 6 is movably arranged inside the fixed shell 5, and the second clamping plate 7 remains stationary inside the fixed shell 5. In the initial state, the elastic recovery member 9 applies an actual external force to the first clamping plate 6, so that the first clamping plate 6 and the second clamping plate 7 clamp the locking copper wire 2 to prevent the locking copper wire 2 from detaching from the fixed head 3; when the safety pin 1 needs to be pulled out, an external force is applied to the pressing head 8, and the first clamping plate 6 moves away from the second clamping plate 7, thereby loosening the locking copper wire 2. After the movable end of the locking copper wire 2 detaches from the fixed head 3, the movable end of the locking copper wire 2 passes through the socket 4 of the safety pin 1 and the locking copper wire 2 is separated from the safety pin 1.

[0027] The pressing head 8 includes a head and a rod, one end of the rod is connected to the head, and the other end of the rod passes through the second clamping plate 7 and is connected to the first clamping plate 6. A circular groove is provided in the fixed housing 5, and the head is slidably matched with the inner wall of the circular groove to facilitate the pressing of the pressing head 8. A guide hole adapted to the rod is provided on the second clamping plate 7 to improve the pressing stability of the pressing head 8.

[0028] In a specific embodiment, the elastic return member 9 includes a return spring, one end of which is connected to the first clamping plate 6, and the other end of which is connected to the inner wall of the fixed housing 5. The first clamping plate 6 is located below the second clamping plate 7, and the first clamping plate 6 is connected to the inner bottom arm of the fixed housing 5 through the return spring. When a downward external force is applied to the pressing head 8, the first clamping plate 6 moves downward, the return spring is compressed, and the first clamping plate 6 moves away from the second clamping plate 7, thereby releasing the locking copper wire 2. After the external force of the pressing head 8 is eliminated, the return spring drives the first clamping plate 6 to move upward and close to the second clamping plate 7, thereby tightening and fixing the locking copper wire 2.

[0029] The utility model adopts a locking copper wire 2 and a fixing head 3 to fix the safety pin 1. One end of the locking copper wire 2 is first fixed on a fixed shell 5 of PVC. The other end of the locking copper wire 2 passes through the insertion hole 4 of the safety pin 1 and then passes into the fixed shell 5. It is clamped and fixed by a first clamping plate 6 and a second clamping plate 7. The setting of the fire extinguisher safety pin 1 is completed.

[0030] In the description of the present utility model, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, and may be fixedly connected, detachably connected, or integrated; may be mechanically connected or electrically connected; may be directly connected or indirectly connected through an intermediate medium, may be the internal connection of two components or the interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood. In addition, the specific features, structures, etc. described in the embodiments are included in at least one embodiment. In the absence of mutual contradictions, those skilled in the art may combine the features of different embodiments. The scope of protection of the present utility model is not limited to the above-mentioned specific embodiments. According to the basic technical concept of the present utility model, the embodiments that can be associated with by ordinary technicians in this field without creative work all belong to the scope of protection of the present utility model.

Claims

1. A fire extinguisher safety device, characterized in that: The invention comprises a safety pin (1), a locking copper wire (2) and a fixing head (3); the safety pin (1) is inserted into a fire extinguisher; a plug hole (4) is provided at the end of the safety pin (1); the locking copper wire (2) is inserted into the plug hole (4) to prevent the safety pin (1) from being separated from the fire extinguisher; and the fixing head (3) is arranged on the locking copper wire (2) to prevent the locking copper wire (2) from being separated from the safety pin (1).

2. The fire extinguisher safety device according to claim 1, characterized in that: One end of the locking copper wire (2) is fixed on the fixing head (3), and the other end of the locking copper wire (2) is movably connected to the fixing head (3).

3. The fire extinguisher safety device according to claim 2, characterized in that: The locking copper wire (2) is U-shaped.

4. The fire extinguisher safety device according to claim 2, characterized in that: The fixing head (3) comprises a fixing shell (5), a first clamping plate (6) and a second clamping plate (7) are arranged inside the fixing shell (5), and one end of the locking copper wire (2) is inserted between the first clamping plate (6) and the second clamping plate (7); the first clamping plate (6) is connected to a pressing head (8) and an elastic return member (9), and the elastic return member (9) is used to drive the first clamping plate (6) to move toward the second clamping plate (7) to clamp the locking copper wire (2); the pressing head (8) is used to drive the first clamping plate (6) away from the second clamping plate (7) to loosen the locking copper wire (2).

5. The fire extinguisher safety device according to claim 4, characterized in that: The pressing head (8) comprises a head portion and a rod portion, one end of the rod portion is connected to the head portion, and the other end of the rod portion passes through the second clamping plate (7) and is connected to the first clamping plate (6).

6. The fire extinguisher safety device according to claim 5, characterized in that: A circular groove is provided in the fixed shell (5), and the head is slidably matched with the inner wall of the circular groove.

7. The fire extinguisher safety device according to claim 5, characterized in that: The second clamping plate (7) is provided with a guide hole adapted to the rod portion.

8. The fire extinguisher safety device according to claim 5, characterized in that: The elastic return member (9) comprises a return spring, one end of which is connected to the first clamping plate (6), and the other end of which is connected to the inner wall of the fixed housing (5).

9. The fire extinguisher safety device according to claim 4, characterized in that: Anti-slip pads are provided on the surfaces of one side of the first clamping plate (6) and the second clamping plate (7) that are close to each other.

10. The fire extinguisher safety device according to claim 4, characterized in that: The fixed shell (5) is made of PVC.

Images