Backpack fire extinguishing device

Abstract

The utility model discloses a backpack fire extinguishing device which comprises a fire fighting tank, a water pipe is arranged at the water outlet end of the fire fighting tank, one end of the water pipe is communicated with a spray pipe, one end of the spray pipe is in threaded connection with a connecting pipe, and one end, far away from the spray pipe, of the connecting pipe is in threaded connection with a threaded sleeve. According to the backpack type fire extinguishing device, after a person presses a pressing handle, the pressing handle is hinged to a rotating shaft on a blocking ball, so that the front end of the pressing handle pulls a pull pin in an arc cavity seat to be pulled outwards, a hinge thread hinged between the pull pin and the blocking ball pulls the blocking ball to move towards a port, close to a cavity pipe, of a spray pipe, and the port, close to the cavity pipe, of the spray pipe is blocked; after a person loosens the pressing handle, the pressing handle returns to the initial position under the acting force of the spring, and the liquid in the spraying pipe flows again.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing devices, specifically a backpack fire extinguishing device. Background Technology

[0002] As we all know, fire is an unavoidable natural disaster and man-made calamity. Once a fire occurs, it is required to extinguish it quickly and effectively, while minimizing environmental pollution. Currently, there are many types of fire extinguishing devices, including large and small equipment. However, regardless of the type of equipment, they all suffer from problems such as being difficult to carry, having low fire extinguishing efficiency, and poor effectiveness. In particular, large equipment has a complex structure, high cost, is troublesome to use, is not flexible, consumes a lot of water, and causes environmental pollution.

[0003] In addition, when using fire extinguishing spray devices, the amount of extinguishing liquid sprayed is relatively uniform, making it difficult to freely control the amount of extinguishing liquid sprayed according to the needs of the site, which easily leads to waste of extinguishing liquid. Utility Model Content

[0004] The purpose of this invention is to provide a backpack fire extinguishing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A backpack fire extinguishing device includes a fire tank, a water pipe installed at the outlet of the fire tank, a nozzle connected to one end of the water pipe, a connecting pipe threaded to one end of the nozzle, a threaded sleeve threaded to the end of the connecting pipe away from the nozzle, a cavity tube threaded to the outer wall of the threaded sleeve, a pipe head fixedly connected to the end of the cavity tube away from the connecting pipe, a stop ball fixedly connected to the outer wall of the connecting pipe, a rotating shaft rotatably connected to the outer wall of the stop ball, a pressure handle installed on the outer wall of the rotating shaft, an arc cavity seat provided at the front end of the outer wall of the pressure handle, and the arc cavity seat fixedly connected to the outer wall of the connecting pipe.

[0007] As a further embodiment of this utility model: a shoulder strap is fixedly connected to the upper part of the outer wall of the fire tank, a chest strap is fixedly connected to the middle part of the outer wall of the fire tank, and a waist belt is fixedly connected to the lower part of the outer wall of the shoulder strap.

[0008] As a further improvement of this utility model, buckles are installed in the middle part of the outer wall of both the chest strap and the waist belt.

[0009] As a further improvement of this utility model: a pull pin is installed at one end of the pressure handle near the arc cavity seat, and the pull pin is located in the inner cavity of the arc cavity seat.

[0010] As a further embodiment of this utility model: the bottom of the pull pin is hinged with a hinge wire, and the end of the hinge wire away from the pull pin is hinged with a stop ball.

[0011] As a further improvement of this utility model: a cavity tube is provided on the outer side of the blocking ball, the blocking ball is located in the inner cavity of the cavity tube, and the diameter of the cavity tube is larger than the diameter of the nozzle.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this utility model, when the operator presses the handle, the handle is hinged to the pivot on the plug ball, causing the front end of the handle to pull the pull pin inside the arc cavity seat outward. The hinge thread between the pull pin and the plug ball pulls the plug ball towards the port of the nozzle near the cavity tube, thus blocking the port of the nozzle near the cavity tube and obstructing the flow of liquid inside the nozzle. When the operator releases the handle, the handle returns to its initial position under the force of the spring, and the liquid inside the nozzle resumes flow. Its structure is more optimized and its design is more reasonable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a backpack fire extinguishing device.

[0015] Figure 2 This is a cross-sectional view of the nozzle in a backpack fire extinguishing device.

[0016] Figure 3 In a backpack fire extinguishing device Figure 2 Enlarged view of point A.

[0017] In the diagram: 1. Fire tank; 2. Back strap; 3. Chest strap; 4. Waist belt; 5. Water pipe; 6. Handle; 7. Spring; 8. Shaft; 9. Spray pipe; 10. Connecting pipe; 11. Threaded sleeve; 12. Cavity pipe; 13. Pipe head; 14. Arc cavity seat; 15. Hinged thread; 16. Pull pin; 17. Ball stopper; 18. Triangular seat. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-3In this embodiment of the present invention, a backpack fire extinguishing device includes a fire tank 1. A water pipe 5 is installed at the outlet of the fire tank 1. One end of the water pipe 5 is connected to a nozzle 9. One end of the nozzle 9 is threadedly connected to a connecting pipe 10. The end of the connecting pipe 10 away from the nozzle 9 is threadedly connected to a threaded sleeve 11. A cavity tube 12 is threadedly connected to the outer wall of the threaded sleeve 11. A pipe head 13 is fixedly connected to the end of the cavity tube 12 away from the connecting pipe 10. A plug ball 17 is fixedly connected to the outer wall of the connecting pipe 10. A rotating shaft 8 is rotatably connected to the outer wall of the plug ball 17. A pressure handle 6 is installed on the outer wall of the rotating shaft 8. An arc cavity seat 14 is provided at the front end of the outer wall of the pressure handle 6. The arc cavity seat 14 is connected to the connecting pipe 10. The outer wall of pipe 10 is fixedly connected. A back strap 2 is fixedly connected to the upper part of the outer wall of fire tank 1. A chest strap 3 is fixedly connected to the middle part of the outer wall of fire tank 1. A waist belt 4 is fixedly connected to the lower part of the outer wall of back strap 2. Buckles are installed in the middle part of the outer walls of chest strap 3 and waist belt 4. A pull pin 16 is installed at the end of the pressure handle 6 near the arc cavity seat 14. The pull pin 16 is located in the inner cavity of the arc cavity seat 14. A hinge thread 15 is hinged to the bottom of the pull pin 16. A blocking ball 17 is hinged to the end of the hinge thread 15 away from the pull pin 16. A cavity tube 12 is provided on the outside of the blocking ball 17. The blocking ball 17 is located in the inner cavity of the cavity tube 12. The diameter of the cavity tube 12 is larger than the diameter of the nozzle 9.

[0020] The working principle of this utility model is as follows:

[0021] When in use, the liquid enters the water pipe 5 through the fire tank 1, and flows into the cavity pipe 12 through the nozzle 9 and the connecting pipe 10. At this time, the liquid is in a flowing state.

[0022] When the operator presses the handle 6, the handle 6 is hinged to the pivot 8 on the ball stopper 17, which pulls the pin 16 in the arc cavity seat 14 outward. The hinge wire 15, which is hinged between the pin 16 and the ball stopper 17, pulls the ball stopper 17 toward the port of the nozzle 9 near the cavity tube 12, and blocks the port of the nozzle 9 near the cavity tube 12, thus blocking the liquid flowing in the nozzle 9. When the operator releases the handle 6, the handle 6 returns to its initial position under the force of the spring 7, and the liquid in the nozzle 9 flows again.

[0023] The back strap 2 and chest strap 3 installed on the outer wall of the fire tank 1, and the waist belt 4 installed on the outer wall of the back strap 2, are used to bind the chest and waist of the personnel, respectively.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A knapsack fire extinguishing apparatus comprising a fire extinguishing tank (1), characterized in that: The water outlet end of the fire-fighting tank (1) is provided with a water pipe (5), one end of the water pipe (5) is communicated with a spray pipe (9), one end of the spray pipe (9) is threadedly connected with a connecting pipe (10), the end of the connecting pipe (10) away from the spray pipe (9) is threadedly connected with a threaded sleeve (11), the outer wall of the threaded sleeve (11) is threadedly connected with a cavity pipe (12), the end of the cavity pipe (12) away from the connecting pipe (10) is fixedly connected with a pipe head (13), the outer wall of the connecting pipe (10) is fixedly connected with a plug ball (17), the outer wall of the plug ball (17) is rotatably connected with a rotating shaft (8) at the upper part, the outer wall of the rotating shaft (8) is provided with a pressing handle (6), the outer wall of the pressing handle (6) is provided with an arc cavity seat (14) at the front end, and the outer wall of the arc cavity seat (14) is fixedly connected with the connecting pipe (10).

2. A knapsack-type fire extinguishing apparatus according to claim 1, wherein: The outer wall of the upper part of the fire-fighting tank (1) is fixedly connected with a shoulder strap (2), the outer wall of the middle part of the fire-fighting tank (1) is fixedly connected with a chest strap (3), and the outer wall of the lower part of the shoulder strap (2) is fixedly connected with a waist strap (4).

3. A knapsack-type fire extinguishing apparatus as defined in claim 2, wherein: The outer wall of the middle part of the chest strap (3) and the waist strap (4) is provided with a buckle.

4. A knapsack-type fire extinguishing apparatus as defined in claim 1, wherein: The end of the pressing handle (6) close to the arc cavity seat (14) is provided with a pull pin (16), and the pull pin (16) is located in the inner cavity of the arc cavity seat (14).

5. A backpack fire extinguishing device according to claim 4, characterised in that: The bottom of the pull pin (16) is hingedly connected with a hinge wire (15), and the end of the hinge wire (15) away from the pull pin (16) is hingedly connected with a plug ball (17).

6. A backpack fire extinguishing device according to claim 5, characterised in that: The outer side of the plug ball (17) is provided with a cavity pipe (12), the plug ball (17) is located in the inner cavity of the cavity pipe (12), and the caliber of the cavity pipe (12) is larger than that of the spray pipe (9).

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