Grip type fire extinguisher

Abstract

The invention relates to a fire extinguisher in the field of fire-fighting equipment, in particular to a grip type fire extinguisher which comprises a barrel (6), a barrel connector (8), a one-way air valve (10) and a spray pipe (15), a dry powder tank (7) is arranged in the barrel (6), the front end of the dry powder tank (7) is fixedly connected with the barrel connector (8) through welding, and a duckbill valve (4) is clamped in a through hole in the tail end of the dry powder tank (7). When the fire extinguisher is used, a firefighter holds the barrel body (6) with one hand, holds a pressing handle (14) on the one-way air valve (10) with the other hand, aligns the long-rod-shaped spray pipe (15) to the root of a fire source, and forcibly presses down the one-way air valve (10) with the hand holding the pressing handle (14) to open the one-way air valve (10). The dry powder fire extinguishing device has the beneficial effects that the fire extinguishing efficiency is high, the speed is high, and the fire extinguishing agent can be greatly saved.

Description

Technical Field

[0001] The invention relates to a fire extinguisher in the field of fire fighting equipment, in particular to a handle-type fire extinguisher. Background Art

[0002] Fire extinguisher is a commonly used fire extinguishing equipment. Commonly used fire extinguishers are as follows: Figure 4 As shown, it is a portable fire extinguisher. When in use, one hand holds the fire extinguisher cylinder and the other hand holds the nozzle, and sprays at the fire source from far to near. Since the portable fire extinguisher adopts a siphon method to extract dry powder fire extinguishing agent, the dry powder fire extinguishing agent in the cylinder must be located at the bottom of the cylinder, and the hand must hold the upper part of the cylinder. The direction of the fire extinguisher spraying can only be changed through a hose. When spraying, the person must hold the front end of the hose to prevent the pressurized gas from causing the hose to swing and spray inaccurately. Since the fire extinguisher should be sprayed at the root of the fire source to achieve the best effect when extinguishing a fire, the portable fire extinguisher cannot spray close to the root of the fire source due to the above-mentioned structural characteristics, so the portable fire extinguisher has low fire extinguishing efficiency, large waste of fire extinguishing agent, and slow fire extinguishing speed. Summary of the invention

[0003] The invention aims to solve the problems of low fire extinguishing efficiency, large waste of fire extinguishing agent and slow fire extinguishing speed of fire extinguisher.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a handle-type fire extinguisher, comprising a cylinder, a cylinder connector, a sealing ring, a one-way air valve, and a nozzle, wherein the cylinder and the cylinder connector are fixedly connected by welding, the cylinder connector and the air inlet of the one-way air valve are fixedly connected by threads, the cylinder connector and the one-way air valve are sealed by a sealing ring, the air outlet of the one-way air valve and the nozzle are fixedly connected by threads, a dry powder canister is arranged in the cylinder, the front end of the dry powder canister is fixedly connected to the cylinder connector by welding, a duckbill valve is clamped in the through hole at the tail end of the dry powder canister, wherein the duckbill end of the duckbill valve is located in the dry powder canister, and the other end is connected to the cylinder, and the dry powder canister is filled with dry powder fire extinguishing agent.

[0005] Furthermore, the tail end of the cylinder is fixedly connected to an inflation valve via a thread, the tail end of the inflation valve is fixedly connected to an air pressure gauge via a thread, and the air pressure gauge is connected to the cylinder.

[0006] Furthermore, a protective cover is provided on the periphery of the inflation valve, and the protective cover is fixedly connected to the tail end of the cylinder by welding. A process hole is provided on the protective cover to facilitate inflation of the inflation valve.

[0007] Furthermore, the one-way air valve is hinged to the pressure handle via a hinge shaft.

[0008] Furthermore, a safety pin is inserted into the corresponding positions of the one-way air valve and the pressure handle. When the safety pin is inserted, there is no pressure contact between the pressure handle and the top of the valve core of the one-way air valve.

[0009] Furthermore, the axial directions of the cylinder, cylinder connector, one-way air valve and nozzle are in the same direction, and their overall fixed connection state is in the shape of a long rod, and the cylinder and the one-way air valve are in a position where the firefighter can hold them with both hands.

[0010] Beneficial effects of the present invention: Compared with the prior art, when a handle-type fire extinguisher of the present invention is used for fire extinguishing, the handle-type fire extinguisher as a whole can be moved arbitrarily in space, and the long rod-shaped nozzle can directly spray the fire extinguishing agent at the root of the fire source, so the fire extinguishing efficiency is high and the speed is fast, and a large amount of fire extinguishing agent can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic cross-sectional structure diagram of a handle-type fire extinguisher of the present invention; Figure 2 yes Figure 1 Left view of Figure 3 It is a schematic diagram of explosion of a grip-type fire extinguisher of the present invention; Figure 4 The utility model is a portable fire extinguisher in the prior art.

[0012] As shown in the figure: 1-inflating valve, 2-air pressure gauge, 3-protective cover, 4-duckbill valve, 5-dry powder fire extinguishing agent, 6-cylinder, 7-dry powder tank, 8-cylinder connector, 9-sealing ring, 10-one-way air valve, 11-safety pin, 12-hinge shaft, 13-valve core, 14-pressure handle, 15-nozzle. DETAILED DESCRIPTION

[0013] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0014] like Figures 1 to 3 As shown, the handle-type fire extinguisher comprises a cylinder 6, a cylinder connector 8, a sealing ring 9, a one-way air valve 10, and a nozzle 15, wherein the cylinder 6 is fixedly connected to the cylinder connector 8 by welding, the cylinder connector 8 is fixedly connected to the air inlet of the one-way air valve 10 by threads, the cylinder connector 8 and the one-way air valve 10 are sealed by a sealing ring 9, and the air outlet of the one-way air valve 10 is fixedly connected to the nozzle 15 by threads; a dry powder tank 7 is arranged in the cylinder 6, the front end of the dry powder tank 7 is fixedly connected to the cylinder connector 8 by welding, a duckbill valve 4 is clamped in the through hole at the rear end of the dry powder tank 7, wherein the duckbill end of the duckbill valve 4 is located in the dry powder tank 7, and the other end is connected to the cylinder 6, and the dry powder tank 7 is filled with a dry powder fire extinguishing agent 5; In the present embodiment, the duckbill valve 4 serves to block the dry powder fire extinguishing agent 5 from entering the cylinder 6, while ensuring that the pressurized gas in the cylinder 6 can only enter the dry powder tank 7 through the duckbill valve 4, so that the pressurized gas sprays the dry powder fire extinguishing agent 5 out of the nozzle 15. This structure avoids the defect that the portable fire extinguisher uses a siphon method to extract the dry powder fire extinguishing agent 5. When using the grip-type fire extinguisher of the present invention, the height and direction of the nozzle 15 can be adjusted at will, and the long rod-shaped nozzle 15 can spray the fire extinguishing agent directly to the root of the fire source, so the fire extinguishing efficiency is high and the speed is fast, and a large amount of fire extinguishing agent can be saved.

[0015] like Figure 1 As shown, the tail end of the cylinder 6 is fixedly connected to an inflation valve 1 by a thread, and the tail end of the inflation valve 1 is fixedly connected to a pressure gauge 2 by a thread, and the pressure gauge 2 is connected to the cylinder 6; in this embodiment, the function of the pressure gauge 2 is to display the pressure of the pressurized gas in the cylinder 6.

[0016] like Figure 1 As shown, the inflation valve 1 is provided with a protective cover 3 on the periphery, and the protective cover 3 is fixedly connected to the tail end of the cylinder 6 by welding. A process hole is opened on the protective cover 3 to facilitate the inflation of the inflation valve 1. In this embodiment, the function of the inflation valve 1 is to rush the pressurized gas into the cylinder 6. If the pressure of the pressurized gas in the cylinder 6 is too high, the pressure can also be released through the inflation valve 1.

[0017] like Figure 1 As shown, the one-way air valve 1 is hinged to the pressure handle 14 via a hinge shaft 12 .

[0018] like Figure 1 to Figure 2 As shown, a safety pin 11 is inserted into the corresponding position of the one-way air valve 10 and the pressure handle 14. When the safety pin 11 is inserted, the pressure handle 14 and the top of the valve core 13 of the one-way air valve 10 are in contact without pressure. In this embodiment, only when the safety pin 11 is pulled out, the pressure handle 14 can apply downward pressure to the top of the valve core 13 to open the one-way air valve 10, so that the pressurized gas can spray the dry powder fire extinguishing agent 5 from the nozzle 15.

[0019] like Figure 1 As shown, the axial directions of the cylinder 6, the cylinder connector 8, the one-way air valve 10, and the nozzle 15 are in the same direction, and the overall fixed connection state is a long rod shape. The cylinder 6 and the one-way air valve 10 are in a position where the firefighter holds both hands; in this embodiment, the firefighter holds the cylinder 6 with one hand and the pressure handle 14 on the one-way air valve 10 with the other hand, and aims the long rod-shaped nozzle 15 at the root of the fire source. The hand holding the pressure handle 14 presses down hard to open the one-way air valve 10, and the pressurized gas sprays the dry powder fire extinguishing agent 5 from the nozzle 15 to the root of the fire source to extinguish the fire.

[0020] In addition, the duckbill valve 4 and the one-way air valve 10 described in the present invention are both mature existing technologies, and the present invention does not describe their structures in detail.

[0021] The specific working principle of the present invention is: Before using a grip-type fire extinguisher of the present invention, first check the pressure gauge 2. If the pressure value of the pressure gauge 2 is within the specified range, it means that the fire extinguisher can be used normally. When using a grip-type fire extinguisher of the present invention, firstly, the safety pin 11 is pulled out, and the firefighter holds the cylinder 6 with one hand and the pressure handle 14 on the one-way air valve 10 with the other hand, and aims the long rod-shaped nozzle 15 at the root of the fire source, and the hand holding the pressure handle 14 presses down hard, and the pressure handle 14 applies downward pressure to the top of the valve core 13, and the valve core 13 moves downward to open the one-way air valve 10; After the one-way air valve 10 is opened, the pressurized gas in the cylinder 6 enters the dry powder tank 7 through the duckbill valve 4, and the pressurized gas drives the dry powder fire extinguishing agent 5 through the one-way air valve 10 and the nozzle 15 and is ejected from the nozzle port. The ejected dry powder fire extinguishing agent 5 covers the root of the fire source, isolates the air around the fire source and completes the fire extinguishing task.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any simple modification, equivalent replacement, improvement, etc. made within the technical concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A handle-type fire extinguisher, comprising a cylinder (6), a cylinder connector (8), a sealing ring (9), a one-way air valve (10), and a nozzle (15), wherein the cylinder (6) and the cylinder connector (8) are fixedly connected by welding, the cylinder connector (8) and the air inlet of the one-way air valve (10) are fixedly connected by threads, the cylinder connector (8) and the one-way air valve (10) are sealed by a sealing ring (9), and the air outlet of the one-way air valve (10) and the nozzle (15) are fixedly connected by threads, characterized in that: A dry powder tank (7) is contained in the cylinder (6), the front end of the dry powder tank (7) is fixedly connected to the cylinder connector (8) by welding, a duckbill valve (4) is clamped in the through hole at the rear end of the dry powder tank (7), wherein the duckbill end of the duckbill valve (4) is located in the dry powder tank (7), and the other end is connected to the cylinder (6), and the dry powder tank (7) contains a dry powder fire extinguishing agent (5).

2. A handle-type fire extinguisher according to claim 1, characterized in that: The tail end of the cylinder (6) is fixedly connected to an inflation valve (1) via a thread, and the tail end of the inflation valve (1) is fixedly connected to an air pressure gauge (2) via a thread, and the air pressure gauge (2) is in communication with the cylinder (6).

3. A handle-type fire extinguisher according to claim 2, characterized in that: The inflation valve (1) is provided with a protective cover (3) on its periphery. The protective cover (3) is fixedly connected to the rear end of the cylinder (6) by welding. A process hole is provided on the protective cover (3) to facilitate inflation of the inflation valve (1).

4. A handle-type fire extinguisher according to claim 3, characterized in that: The one-way air valve (10) is hingedly connected to the pressure handle (14) via a hinge shaft (12).

5. A handle-type fire extinguisher according to claim 4, characterized in that: A safety pin (11) is inserted into corresponding positions of the one-way air valve (10) and the pressure handle (14); when the safety pin (11) is inserted, there is no pressure contact between the pressure handle (14) and the top of the valve core (13) of the one-way air valve (10).

6. A handle-type fire extinguisher according to any one of claims 1 to 5, characterized in that: The axial directions of the cylinder (6), the cylinder connector (8), the one-way air valve (10), and the nozzle (15) are in the same direction, and the entire fixed connection state is in the shape of a long rod, and the cylinder (6) and the one-way air valve (10) are in a position where a firefighter can hold them with both hands.

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