Fire extinguisher with undervoltage alarm function

Abstract

The utility model relates to a fire extinguisher with an under-pressure alarm function, and belongs to the field of fire extinguishers, the fire extinguisher comprises a shell, a partition plate is arranged in the shell, the partition plate divides the shell into a first cavity and a second cavity, and the air pressure in the first cavity is equal to that in the second cavity; the pressure detection assembly is arranged on the partition plate and used for detecting the air pressure difference; one end of the mobile conversion mechanism is connected with the pressure detection assembly, and the other end of the mobile conversion mechanism extends out of the shell; and the alarm circuit unit is fixed in a protective cover outside the shell, one end, extending out of the shell, of the movable conversion mechanism extends into the protective cover, the barrel and the piston are arranged, when gas in the second cavity is under pressure, the piston moves rightwards, the horizontal rod promotes the telescopic rod to ascend, and therefore the telescopic rod is connected with the upper conducting strip and the lower conducting strip, and the alarm circuit unit is connected with the upper conducting strip and the lower conducting strip. The device not only can achieve the purpose of undervoltage alarm, but also is convenient to disassemble and maintain due to the fact that the whole component is independently arranged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fire extinguisher, especially to a fire extinguisher with underpressure alarm function. BACKGROUND

[0002] Fire extinguisher is a portable fire extinguishing tool, which is used for fire extinguishing and disaster relief, and is one of commonly used fire-fighting equipment. Therefore, fire extinguishers are generally placed in public places or places where fire may occur for a long time. However, fire extinguishers have a certain shelf life. With the passage of time, the internal pressure of the fire extinguisher will gradually decrease. When it is needed to use, it may not be used due to the low pressure, and the purpose of fire extinguishing cannot be achieved. Therefore, the existing technical personnel generally check regularly, but this is obviously very low in efficiency and large in workload. The existing technology attempts to improve the fire extinguisher so that it can automatically alarm when the pressure is insufficient. The technical personnel need to check and replace it, for example, the fire extinguisher with pressure alarm device disclosed in the patent CN221084491 U is mainly improved on the basis of the traditional fire extinguisher. On the basis of the original pointer, the pointer is rotated to turn on the buzzer circuit to achieve the purpose of alarm. However, this has the problem that it is not easy to disassemble or when the buzzer circuit fails, the entire pressure gauge needs to be disassembled, which makes the operation very inconvenient. SUMMARY

[0003] The problem solved by the present application is how to realize the underpressure alarm of the fire extinguisher, and also facilitate the disassembly and installation of the underpressure alarm device. Therefore, a fire extinguisher with underpressure alarm function is designed, and the specific technical scheme adopted is as follows:

[0004] The fire extinguisher with underpressure alarm function mainly comprises a shell, a bottle head valve and a jet pipe, etc. The shell has a partition plate inside. The partition plate divides the inside of the shell into a first cavity and a second cavity. The pressure in the first cavity is equal to the pressure in the second cavity.

[0005] The pressure detection assembly is arranged on the partition plate and is used for detecting the pressure difference.

[0006] The moving conversion mechanism is connected with the pressure detection assembly at one end and extends out of the shell at the other end.

[0007] The alarm circuit unit is fixed in the protective cover outside the shell, and the one end of the moving conversion mechanism extending out of the shell extends into the protective cover.

[0008] Preferably, the pressure detection assembly comprises:

[0009] The cylinder body is horizontally arranged, and the communication ports at both ends of the cylinder body are communicated with the first cavity and the second cavity respectively.

[0010] The piston is movably arranged in the cylinder body, and one side of the piston close to the second cavity is connected with the movement conversion mechanism.

[0011] Preferably, the movement conversion mechanism comprises:

[0012] The horizontal rod is provided with a protrusion at an end away from the pressure detection assembly, and the distance between the highest position of the protrusion and the lowest position of the protrusion is the triggering distance.

[0013] The telescopic rod is movably and sealingly arranged at the top end of the shell body, and the telescopic rod can be telescoped up and down when the horizontal rod moves, and the maximum distance between the top end of the telescopic rod and the contact of the alarm circuit unit is equal to the triggering distance.

[0014] Preferably, the bottom end of the telescopic rod is provided with a roller.

[0015] Preferably, the telescopic rod is a metal conductive rod, and the alarm circuit unit comprises:

[0016] The upper conductive sheet and the lower conductive sheet are arranged in the protective cover in an up-down interval, the telescopic rod is connected with the upper conductive sheet and the lower conductive sheet respectively when the telescopic rod rises to the highest position, and the telescopic rod is disconnected with the upper conductive sheet and the lower conductive sheet respectively when the telescopic rod falls to the lowest position.

[0017] The buzzer and the battery are connected into a break circuit through wires.

[0018] Preferably, the protective cover is an insulating cover.

[0019] The utility model discloses a cylinder body and piston are set up, when the gas in the second cavity is under pressure, the piston will move to the right, the horizontal rod promotes the telescopic rod to rise to make the telescopic rod with upper conductive sheet, lower conductive sheet connect, thereby intercommunicate buzzer circuit, buzzer alarm, the above-mentioned device can realize the purpose of under pressure alarm, and because its whole component sets up alone, it is convenient to dismantle and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is the perspective view of the utility model;

[0021] Fig. 2 It is the front view of the utility model.

[0022] In the drawing, 1, shell body, 2, protective cover, 3, alarm circuit unit, 301, upper conductive sheet, 302, buzzer, 303, battery, 304, lower conductive sheet, 4, movement conversion mechanism, 401, telescopic rod, 402, roller, 403, protrusion, 404, horizontal rod, 5, pressure detection assembly, 501, piston, 502, cylinder body, 6, baffle, 7, first cavity, 8, second cavity. DETAILED DESCRIPTION

[0023] In order to clearly illustrate the technical features of the scheme, the utility model will be described in detail below with the specific implementation and in conjunction with the drawings.

[0024] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0025] As shown in Figs. 1-2 A fire extinguisher with an under-voltage alarm function mainly comprises a cylindrical shell 1, a bottle head valve and a spray pipe, and other components (mainly including a pressure handle, a lifting handle, a safety pin, a pressure gauge and the like), a partition plate 6 is vertically arranged in the shell 1, the partition plate 6 can be integrally formed with the fire extinguisher shell 1 during casting, the partition plate 6 divides the shell 1 into a first cavity 7 and a second cavity 8, in this embodiment, the smaller one is called the first cavity 7, and the larger one is called the second cavity 8, the air pressure in the first cavity 7 is equal to that in the second cavity 8, which is to ensure the initial state balance of the pressure detection assembly 5.

[0026] The pressure detection assembly 5 is arranged on the partition plate 6 and is used for detecting the air pressure difference, and the initial state is balanced, when the air pressure in the second cavity 8 decreases, the pressure detection assembly 5 will move under the action of the pressure difference and cause the displacement of the movement conversion mechanism 4.

[0027] One end of the movement conversion mechanism 4 is connected with the pressure detection assembly 5, and the other end extends out of the shell 1, the movement conversion mechanism 4 includes horizontal displacement and vertical displacement, the vertical displacement distance realizes the circuit on-off of the alarm circuit unit 3, and the alarm purpose is realized.

[0028] The alarm circuit unit 3 is fixed in the protective cover 2 outside the shell 1, and the end of the movement conversion mechanism 4 extending out of the shell 1 extends into the protective cover 2.

[0029] Further, the pressure detection assembly 5 comprises a cylinder 502, which is horizontally arranged and has a communication port at each of its left and right ends. The communication port at the left end of the cylinder 502 is in communication with the first cavity 7, and the communication port at the right end is in communication with the second cavity 8. A piston 501 is movably arranged in the cylinder 502. The side of the piston 501 close to the second cavity 8 is connected with the movement conversion mechanism 4. In the initial state, the pressures on both sides of the piston 501 are equal, and the piston 501 is at the initial position. When the pressure in the second cavity 8 decreases, the piston 501 moves to the right. The movement of the piston 501 makes the movement conversion mechanism 4 conduct the circuit of the alarm circuit unit 3, so that the alarm circuit unit 3 alarms.

[0030] Further, the movement conversion mechanism 4 comprises a horizontal rod 404 and a telescopic rod 401. The horizontal rod 404 is provided with a protrusion 403 at the distal right end. The distance between the highest position of the protrusion 403 and the lowest position of the protrusion 403 is the trigger distance. The telescopic rod 401 is movably and sealingly arranged at the top end of the shell 1. Specifically, the telescopic rod 401 can be sealed in a manner similar to the piston 501 to ensure upward and downward movement. The telescopic rod 401 can be telescoped up and down when the horizontal rod 404 moves. The maximum distance between the top end of the telescopic rod 401 and the contact of the alarm circuit unit 3 is equal to the trigger distance.

[0031] Further, in order to reduce the friction between the telescopic rod 401 and the horizontal rod 404, a roller 402 is arranged at the bottom end of the telescopic rod 401. The movement of the horizontal rod 404 makes the roller 402 at the bottom end of the telescopic rod ascend under the action of the protrusion 403.

[0032] Further, the telescopic rod 401 is a metal conductive rod. The alarm circuit unit 3 comprises an upper conductive sheet 301 and a lower conductive sheet 304. The upper conductive sheet 301 and the lower conductive sheet 304 are arranged in the protective cover 2 in an up-and-down spaced manner. The protective cover 2 is an insulating cover to avoid conduction. When the telescopic rod 401 ascends to the highest position, the telescopic rod 401 is connected with the upper conductive sheet 301 and the lower conductive sheet 304, respectively. When the telescopic rod 401 descends to the lowest position, the telescopic rod 401 is disconnected from the upper conductive sheet 301 and the lower conductive sheet 304, respectively. The buzzer 302, the battery 303, the upper conductive sheet 301 and the lower conductive sheet 304 are connected into an open circuit through wires.

[0033] Specifically, when the pressure in the second cavity 8 decreases, the piston 501 moves to the right. The piston 501 drives the horizontal rod 404 to move to the right. The protrusion 403 on the horizontal rod 404 promotes the telescopic rod to ascend. The telescopic rod contacts the upper conductive sheet 301 and the lower conductive sheet 304 when the telescopic rod ascends. The circuit of the alarm circuit unit 3 is conducted. Specifically, the buzzer 302, the battery 303, the upper conductive sheet 301 and the lower conductive sheet 304, and the telescopic rod form a path. The buzzer 302 alarms.

[0034] The specific embodiments above cannot be used as a limitation to the protection scope of the utility model, and any alternative improvement or transformation made by the skilled in the art to the utility model embodiments falls within the protection scope of the utility model.

[0035] The parts not described in the utility model are the common technology of the skilled in the art.

Claims

1. A fire extinguisher having an under-pressure alarm function, comprising a case, a cylinder head valve, and a discharge tube, characterized by, The shell has a partition plate, which divides the shell into a first cavity and a second cavity, and the air pressure in the first cavity is equal to that in the second cavity; a pressure detection assembly arranged on the partition plate and used for detecting the air pressure difference; a movement conversion mechanism, one end of which is connected with the pressure detection assembly and the other end of which extends out of the shell; an alarm circuit unit fixed in a protective cover outside the shell, and the end of the movement conversion mechanism extending out of the shell extends into the protective cover.

2. The fire extinguisher with an under-voltage alarm function according to claim 1, characterized in that, The pressure detection assembly comprises: a cylinder, both ends of which are provided with communication ports, the cylinder is horizontally arranged, the communication port at one end of the cylinder is communicated with the first cavity, and the communication port at the other end of the cylinder is communicated with the second cavity; a piston, which is movably arranged in the cylinder, and one side of the piston close to the second cavity is connected with the movement conversion mechanism.

3. The fire extinguisher with an under-voltage alarm function according to claim 1 or 2, characterized in that, The movement conversion mechanism comprises: a horizontal rod, which is provided with a protrusion at one end away from the pressure detection assembly, and the distance between the highest position of the protrusion and the lowest position of the protrusion is a trigger distance; a telescopic rod, which is movably and sealingly arranged at the top end of the shell, the telescopic rod can be telescoped up and down when the horizontal rod moves, and the maximum distance between the top end of the telescopic rod and the contact of the alarm circuit unit is equal to the trigger distance.

4. The fire extinguisher with an under-voltage alarm function according to claim 3, characterized in that, The bottom end of the telescopic rod is provided with a roller.

5. The fire extinguisher with an under-voltage alarm function according to claim 3, wherein The telescopic rod is a metal conductive rod, and the alarm circuit unit comprises: an upper conductive sheet and a lower conductive sheet, which are arranged in the protective cover in an upper and lower spaced manner, the telescopic rod is connected with the upper conductive sheet and the lower conductive sheet respectively when rising to the highest position, and the telescopic rod is disconnected from the upper conductive sheet and the lower conductive sheet respectively when falling to the lowest position; a buzzer and a battery, which are connected into an open circuit through wires.

6. The fire extinguisher having an under-voltage alarm function according to claim 1, wherein The protective cover is an insulating cover.

Images