Fire-fighting breaking water gun with piercing function

Abstract

The utility model discloses a fire-fighting breaking water gun with puncture function belongs to fire-fighting breaking water gun technical field, including gun handle valve, and the gun handle valve is connected with the gun barrel, and the one end detachable connection of gun barrel has the gun head, and the gun head is equipped with the cavity and is conducted with the gun barrel, and the inner wall sliding installation of cavity has the bushing, and the one end of bushing is close to the gun handle valve and is the open structure, and the other end is the closed structure, and the spring is connected between the one end of bushing closure and the bottom wall of cavity, and the lateral wall of gun head and bushing lateral wall respectively are set up equal number's first through -hole and second through -hole, through setting up bushing in the inside of gun head, and in the process of puncture or breaking (not spraying water flow) bushing can be closed in the inside the water spray hole (first through -hole) of gun head, effectively avoid the foreign matter by water spray hole into the gun head or gun barrel, and bushing can be under the impact of water flow automatic release to water spray hole (first through -hole) closed, do not influence water flow normal spraying.

Description

Technical Field

[0001] This utility model belongs to the technical field of fire-fighting demolition water guns, specifically relating to a fire-fighting demolition water gun with piercing function. Background Technology

[0002] During firefighting operations, fires often occur inside ceilings or roller shutters. Conventional fire hoses or fire extinguishers are often ineffective in time. Therefore, it is necessary to use piercing fire demolition hoses to break through the ceiling or roller shutter. When the fire hose penetrates the ceiling or roller shutter, it can spray water to suppress the fire. Similarly, when fires occur in piles of firewood, timber, or other combustibles, conventional fire hoses are ineffective. Therefore, it is necessary to use piercing fire demolition hoses to penetrate the inside of the stacked combustibles and spray water from the inside out to suppress the fire.

[0003] For example, patent document CN2661239Y discloses a penetrating demolition water gun. It includes a nozzle and a barrel connected to the nozzle. The rear end of the barrel is connected to a connecting pipe, which is connected to a valve operated by a handle. The valve is connected to a hose fastener. The inner cavity of the nozzle is connected to the inner cavity of the barrel. The nozzle has evenly distributed water spray holes that communicate with the inner cavity of the nozzle. It has both demolition and fire extinguishing functions. It can be used to penetrate ceilings, cars, and airplanes that ordinary water guns cannot reach, for rapid and effective fire extinguishing. It is also very effective in extinguishing deep fires involving some solids such as wood products, cotton and wool fabrics, and paper.

[0004] However, when using the aforementioned penetrating breaching water gun to breach ceilings or roller shutters, insulation layers that may exist within the ceiling or roller shutter, such as rock wool fibers or polystyrene particleboard, may enter the nozzle's spray holes. Similarly, when using the same penetrating breaching water gun to extinguish fires inside piled combustible materials, combustible materials or their ash particles may also enter the nozzle's spray holes. All of these situations can lead to blockage of the penetrating breaching water gun's spray holes, reducing the water flow and affecting the fire extinguishing effect. Therefore, there is an urgent need for a fire-fighting breaching water gun with a piercing function that can easily penetrate insulation structures such as ceilings or inside piled combustible materials, and effectively prevents foreign objects from entering the spray holes during the penetration process. Utility Model Content

[0005] This utility model proposes a fire-fighting demolition water gun with piercing function, which aims to solve the problem of foreign objects entering the spray hole and causing blockage during the piercing process of a penetrating demolition water gun.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fire hose reel with piercing function includes a handle valve, a barrel connected to the handle valve, a nozzle detachably connected to one end of the barrel, a cavity inside the nozzle communicating with the barrel, a bushing slidably installed on the inner wall of the cavity, an open structure at one end of the bushing near the handle valve and a closed structure at the other end, a spring connecting the closed end of the bushing to the bottom wall of the cavity, and equal numbers of first through holes and second through holes respectively opened on the side wall of the nozzle and the side wall of the bushing.

[0008] When the spring is in its natural state, the positions of the first through hole and the second through hole are completely offset. When the bushing slides away from the gun handle under the action of water flow, the first through hole and the second through hole coincide.

[0009] Preferably, a limiting ring is installed on the inner wall of the cavity of the gun head. When the spring is in its natural state, that is, when the gun handle valve is closed, the limiting ring abuts against one end of the bushing opening.

[0010] Preferably, the limiting ring is threaded to the inner wall of the cavity of the gun head, and the limiting ring has a mounting hole on the side facing the gun barrel.

[0011] Preferably, the second through hole is an oblong hole, the major axis of which is parallel to the axis of the bushing, the ratio of the major axis to the minor axis of which is (2 to 2.5):1, and the length of the minor axis is 1 to 1.2 times the diameter of the first through hole.

[0012] Preferably, the gun head is threadedly connected to the gun barrel, and a sealing ring is provided at the connection between the gun barrel and the gun head.

[0013] Preferably, the sidewall of the gun head is provided with annular grooves at equal intervals, and the first through holes are distributed at equal intervals along the circumference within the annular grooves.

[0014] Preferably, the outer wall of the bushing is provided with a positioning groove, and the inner wall of the cavity of the gun head is provided with a positioning key that cooperates with the positioning groove.

[0015] Preferably, the barrel has a plurality of third through holes evenly distributed on its sidewall, and the diameter of the third through hole is 0.3 to 0.5 times that of the first through hole.

[0016] Beneficial effects:

[0017] 1. This utility model provides a bushing inside the gun head. During the insertion or dismantling process (without water spraying), the bushing can seal the water spray hole (first through hole) of the gun head from the inside, effectively preventing foreign objects from entering the gun head or barrel through the water spray hole. Moreover, the bushing can automatically release the seal on the water spray hole (first through hole) under the impact of the water flow, without affecting the normal spraying of water.

[0018] 2. The nozzle of this utility model is provided with an annular groove, and the first through hole of the nozzle spray hole is located in the annular groove. This can not only further prevent foreign objects from entering the first through hole during the piercing or breaking process, but also increase the friction between the nozzle and the insulation layer, thereby improving the breaking force.

[0019] 3. The gun head, bushing, and limiting ring of this utility model are all detachable structures, which facilitates disassembly, cleaning, and maintenance.

[0020] The gun barrel of this invention is provided with a third through hole of small diameter, which can realize a multi-directional and three-dimensional water jet effect, effectively suppressing the fire from all directions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is an exploded view of the gun head, or barrel, of this utility model.

[0023] Figure 3 This is a side view of the present invention;

[0024] Figure 4 This utility model Figure 3 Enlarged view of point A;

[0025] Figure 5 This utility model Figure 3 Enlarged view of point B;

[0026] Figure 6 This utility model Figure 4 AA cross-section view.

[0027] In the diagram: 1. Gun handle valve; 2. Gun barrel, 201, third through hole; 3. Gun head; 301, annular groove; 302, first through hole; 303, positioning key; 4. Limiting ring; 401, mounting hole; 5. Bushing; 501, second through hole; 502, positioning groove; 6. Spring; 7. Sealing ring. Detailed Implementation

[0028] The present invention will be further described below with reference to specific implementation examples. However, the present invention is not limited to these embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1 , Figure 2This utility model proposes a fire-fighting demolition water gun with piercing function, including a gun handle valve 1, a gun barrel 2 connected to the gun handle valve 1, a gun head 3 detachably connected to one end of the gun barrel 2, a cavity provided in the gun head 3 and communicating with the gun barrel 2, a bushing 5 slidably installed on the inner wall of the cavity, the bushing 5 having an open structure at one end near the gun handle valve 1 and a closed structure at the other end, a spring 6 connected between the closed end of the bushing 5 and the bottom wall of the cavity, and the side wall of the gun head 3 and the side wall of the bushing 5 having an equal number of first through holes 302 and second through holes 501, the first through holes 302 and the second through holes 501 being equidistantly distributed and aligned in the circumferential direction of the gun head 3 or the bushing 5;

[0030] The gun handle valve 1 can be connected to a fire hose at one end, and the valve can be opened or closed by the handle. When this invention is used to penetrate or break through the insulation layer structure such as the ceiling, the gun handle valve 1 is in the closed state, and the spring 6 is in the natural state (including a small degree of compression, i.e., the compression rate is not less than 90%). Figure 3 , Figure 4 As shown, the second through hole 501 on the side wall of the bushing 5 and the first through hole 302 on the side wall of the gun head 3 are completely offset in the axial position of the gun head 3 (or bushing 5). That is, the first through hole 302 and the second through hole 501 are not connected. The bushing 5 seals the first through hole 302 inside the gun head 3, thereby preventing foreign objects such as rock wool fibers or polystyrene board particles from entering during the piercing or breaking process.

[0031] After the penetration or dismantling action is completed, the gun handle valve 1 is opened. At this time, the bushing 5 moves away from the gun handle valve 1 (to the side of the gun tip) under the pressure of the water flow, and at the same time compresses the spring 6, so that the first through hole 302 coincides with the second through hole 501. The first through hole 302 and the second through hole 501 are connected, and the water flows out through the second through hole 501 and the first through hole 302.

[0032] Appropriate sealing measures, such as sealing rings or sealing rings, should be taken between the front end of the outer wall of the bushing 5 and the inner wall of the cavity of the gun head 3 to prevent water from entering the cavity at the front end of the bushing 5 and causing obstruction of the movement of the bushing 5. The cavity at the front end of the bushing 5 should have sufficient volume to avoid the bushing 5 compressing the air in the cavity too much, which would cause obstruction of movement. The compression ratio of the bushing 5 to the cavity should be controlled below 0.7.

[0033] Furthermore, such as Figure 2 , Figure 3 A limiting ring 4 is installed on the inner wall of the cavity of the gun head 3. When the spring 6 is in its natural state (compression rate not less than 90%), that is, when the gun handle valve 1 is closed, the limiting ring 4 abuts against one end of the opening of the bushing 5, limiting the bushing 5 and preventing it from moving excessively in the opposite direction. The limiting ring 4 is threadedly connected to the inner wall of the cavity of the gun head 3. By adjusting the limiting ring 4, the position of the bushing 5 or the tension of the spring 6 can be finely adjusted. Figure 5As shown, the limiting ring 4 has a mounting hole 401 on the side facing the gun barrel 2, which facilitates the adjustment or disassembly of the limiting ring 4 using tools.

[0034] Furthermore, such as Figure 2 As shown, the second through hole 501 is an oblong hole, the major axis of which is parallel to the axis of the bushing 5. The ratio of the major axis to the minor axis of the oblong hole is (2~2.5):1. The length of the minor axis is 1~1.2 times the diameter of the first through hole. This ensures that the bushing 5 can maintain complete communication between the first through hole 302 and the second through hole 501 within a certain stroke, preventing water pressure fluctuations from causing the bushing to vibrate back and forth, thus affecting the stability of the water jet.

[0035] Furthermore, such as Figure 2 , Figure 4 As shown, the gun head 3 is threadedly connected to the barrel 2. A sealing ring 7 is provided at the connection between the barrel 2 and the gun head 3. The sealing ring, combined with the threaded connection, allows for detachable connection, ensuring the airtightness between the gun head 3 and the barrel 2, and facilitating the disassembly, cleaning, and maintenance of various components. Specifically, first, the gun head 3 is separated from the barrel 2 by the thread, then the limiting ring 4 is removed by the thread, allowing the bushing 5 and spring 6 to be taken out. Especially when the bushing 5 does not seal well against the inner wall of the cavity, causing water to enter the cavity at the front of the bushing 5, the bushing 5 needs to be disassembled to drain the water.

[0036] Furthermore, such as Figure 6 As shown, the outer wall of the bushing 5 is provided with a positioning groove 502, and the inner wall of the cavity of the nozzle 3 is provided with a positioning key 303 that cooperates with the positioning groove 502. The positioning groove 502 and the positioning key 303 cooperate with each other to perform circumferential positioning of the bushing 5. This prevents the first through hole 302 and the second through hole 501 from being misaligned in the circumferential direction, which would affect the water flow.

[0037] Furthermore, such as Figure 1 , Figure 2 As shown, the side wall of the gun barrel 2 is evenly distributed with several third through holes 201. The diameter of the third through hole 201 is 0.3 to 0.5 times that of the first through hole 302. Through the small-diameter third through hole on the gun barrel, a multi-directional three-dimensional water jet effect can be achieved, which can effectively suppress the fire from all directions.

[0038] Compared to traditional penetrating demolition water guns, this invention uses a bushing inside the cavity of the nozzle to seal the water spray hole during demolition or penetration, effectively preventing foreign objects such as insulation material debris from entering the nozzle and causing blockage, thus improving the reliability of the fire demolition water gun.

Claims

1. A fire hose reel with piercing function, comprising a handle valve (1), wherein a barrel (2) is connected to the handle valve (1), characterized in that, One end of the barrel (2) is detachably connected to the head (3). The head (3) has a cavity that communicates with the barrel (2). A bushing (5) is slidably installed on the inner wall of the cavity. The bushing (5) has an open structure at one end near the handle valve (1) and a closed structure at the other end. A spring (6) is connected between the closed end of the bushing (5) and the bottom wall of the cavity. The side wall of the head (3) and the side wall of the bushing (5) are respectively provided with an equal number of first through holes (302) and second through holes (501). When the spring (6) is in its natural state, the positions of the first through holes (302) and the second through holes (501) are completely offset. When the bushing (5) slides away from the handle valve (1) under the action of water flow, the first through holes (302) and the second through holes (501) coincide.

2. A fire hose with piercing function according to claim 1, characterized in that, A limiting ring (4) is installed on the inner wall of the cavity of the gun head (3). When the spring (6) is in its natural state, the limiting ring (4) abuts against one end of the opening of the bushing (5).

3. A fire hose with piercing function according to claim 2, characterized in that, The limiting ring (4) is threaded to the inner wall of the cavity of the gun head (3), and the limiting ring (4) has a mounting hole (401) on the side facing the gun barrel (2).

4. A fire hose with piercing function according to claim 1, characterized in that, The second through hole (501) is an oblong hole, the major axis of which is parallel to the axis of the bushing (5), and the ratio of the major axis to the minor axis of which is (2 to 2.5):

1. The length of the minor axis is 1 to 1.2 times the diameter of the first through hole.

5. A fire hose with piercing function according to claim 1, characterized in that, The gun head (3) is threadedly connected to the gun barrel (2), and a sealing ring (7) is provided at the connection between the gun barrel (2) and the gun head (3).

6. A fire hose with piercing function according to claim 1, characterized in that, The gun head (3) has annular grooves (301) arranged at equal intervals on its sidewall, and the first through hole (302) is distributed at equal intervals along the circumference in the annular grooves (301).

7. A fire hose with piercing function according to claim 1, characterized in that, The bushing (5) has a positioning groove (502) on its outer wall, and the gun head (3) has a positioning key (303) on its inner wall that cooperates with the positioning groove (502).

8. A fire hose with piercing function according to any one of claims 1-7, characterized in that, The sidewall of the gun barrel (2) is evenly distributed with a number of third through holes (201), and the diameter of the third through hole (201) is 0.3 to 0.5 times that of the first through hole (302).

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