Gun head quick replacement structure of fire-fighting direct-flow spray water gun

Abstract

The utility model relates to the technical field of fire-fighting direct-flow spray water guns, discloses a quick gun head replacement structure of a fire-fighting direct-flow spray water gun, and solves the problem that a gun head of an existing quick gun head replacement device of the fire-fighting direct-flow spray water gun shakes left and right in use after being replaced. A quick gun head replacement structure of a fire-fighting direct-flow spray water gun comprises a replacement shell A fixedly connected to one side of a gun head, one side of the replacement shell A is movably connected with a replacement shell B, one side of the replacement shell B is fixedly connected with a connecting pipe, the connecting pipe is externally connected with a water hose, and the inner wall of the replacement shell A is fixedly connected with a replacement mechanism used for quickly replacing the gun head. A clamping shell is fixedly connected to the inner wall of the replacement shell B, the replacement mechanism comprises a fixing plate fixedly connected to the inner wall of the replacement shell A, a clamping block is fixedly connected to one side of the fixing plate, the clamping block is matched with the clamping shell, and the effect that the gun head is stable in use after the gun head of the quick replacement device for the fire-fighting direct-flow spraying water gun is replaced is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting direct current spray water guns, in particular to a quick replacement structure for the gun head of a fire fighting direct current spray water gun. Background Technique

[0002] The fire fighting direct current spray water gun is a fire fighting equipment that combines the characteristics of a direct current water gun and a spray water gun. It can spray columnar water flow and spray water flow. It has the characteristics of long range, large flow and strong impact force. At the same time, it can achieve atomization effect and has strong fire extinguishing ability for indoor building fires, live equipment fires, combustible dust fires and some oil fires. Quickly replacing the gun head can improve the fire extinguishing efficiency. At the fire scene, time is life, and every second may be related to the success or failure of fire extinguishing. If the gun head is damaged or needs to be replaced, being able to complete the replacement quickly means that the fire extinguishing work can be resumed faster, thus more effectively controlling the fire. Secondly, quickly replacing the gun head helps to ensure the safety of firefighters. During the fire extinguishing process, firefighters may encounter various complex and dangerous situations, such as high temperature and thick smoke. If there is a problem with the gun head, firefighters can quickly replace it, which can reduce the time staying in the dangerous environment and reduce the risk of injury. The existing quick replacement structure for the gun head usually connects the gun head and the water gun or the water hose through internal and external threads. However, long-term use or improper operation may cause wear of the threads between the gun head and the water gun or the water hose, thereby affecting the connection stability and causing the gun head to shake left and right during installation and use. Content of the Utility Model

[0003] The purpose of the utility model is to provide a quick replacement structure for the gun head of a fire fighting direct current spray water gun. By using this device for work, the problem that the gun head shakes left and right during use after replacing the gun head of the existing quick replacement device for the gun head of a fire fighting direct current spray water gun is solved.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A quick replacement structure for the gun head of a fire fighting direct current spray water gun, including a replacement shell A fixedly connected to one side of the gun head, a replacement shell B movably connected to one side of the replacement shell A, a connecting pipe fixedly connected to one side of the replacement shell B, the connecting pipe being externally connected to a water hose, and a replacement mechanism for quickly replacing the gun head fixedly connected to the inner wall of the replacement shell A;

[0005] A clamping shell is fixedly connected to the inner wall of the replacement shell B;

[0006] The replacement mechanism includes a fixing plate fixedly connected to the inner wall of the replacement shell A, a clamping block fixedly connected to one side of the fixing plate, the clamping block being matched with the clamping shell, a fixing block fixedly connected to the inner wall of the replacement shell A, an electric telescopic rod fixedly connected to one side of the fixing block, and a fastening block fixedly connected to one end of the electric telescopic rod.

[0007] Preferably, a magnet is fixedly connected to the inner wall of the replacement shell A, and a magnetic spring is fixedly connected to one side of the cartridge case.

[0008] Preferably, a sealing mechanism for sealing the replacement mechanism is fixedly connected to the outer surface of the replacement shell B. The sealing mechanism includes a sealing ring fixedly connected to the outer surface of the replacement shell B, and the inner wall of the sealing ring is sleeved on the outer surface of the replacement shell A.

[0009] Preferably, a threaded ring body is fixedly connected to the outer surface of the sealing ring, a rotating tube is threadedly connected to the outer surface of the threaded ring body, and an anti-slip strip A is fixedly connected to the outer surface of the rotating tube.

[0010] Preferably, an anti-slip strip B is fixedly connected to the outer surface of the connecting pipe.

[0011] Preferably, a flow regulating valve is fixedly connected to the inner wall of the connecting pipe.

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

[0013] For a quick gun head replacement structure of a fire direct current spray water gun proposed by the present utility model, when the gun head of the fire direct current spray water gun needs to be replaced, the replacement shell A is moved towards the replacement shell B. The lower surfaces of the fixing plate and the clamping block come into contact with one side of the inner wall of the replacement shell B. At this time, the replacement shell A is rotated to engage the outer surface of the clamping block with the inner wall of the cartridge case, realizing the fixation of the gun head and the replacement shell B. After the outer surface of the clamping block is engaged with the inner wall of the cartridge case, the electric telescopic rod extends and retracts, and the electric telescopic rod pushes the fastening block to move, bringing one side of the fastening block into contact with one side of the inner wall of the replacement shell B. At this time, the fastening block is located on one side of the fixing plate, preventing the clamping block and the cartridge case from moving during the use of the gun head, causing the gun head to shake left and right, and realizing the stable effect of the gun head during the use of the quick gun head replacement device of the fire direct current spray water gun after the gun head is replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the structure at the position of the replacement shell A of the present utility model;

[0016] Figure 3 is a schematic diagram of the structure at the position of the replacement shell B of the present utility model;

[0017] Figure 4 is a schematic diagram of the internal structure of the replacement shell B of the present utility model;

[0018] Figure 5 is a schematic diagram of the structure of the replacement mechanism of the present utility model;

[0019] Figure 6 is a schematic diagram of the structure of the sealing mechanism of the present utility model.

[0020] In the figure: 1. Gun head; 2. Replacement shell A; 21. Magnet; 3. Replacement shell B; 31. Cartridge case; 4. Connecting pipe; 41. Anti-slip strip B; 5. Replacement mechanism; 51. Fixed plate; 52. Clamping block; 53. Fixed block; 54. Electric telescopic rod; 55. Fastening block; 6. Magnetic spring; 7. Sealing mechanism; 71. Sealing ring; 72. Threaded ring body; 73. Rotating pipe; 74. Anti-slip strip A; 8. Flow regulating valve. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

[0023] Combined with Figure 1 and Figure 2 , a quick replacement structure for the gun head of a fire direct current spray water gun, including a replacement shell A2 fixedly connected to one side of the gun head 1, a replacement shell B3 movably connected to one side of the replacement shell A2, a connecting pipe 4 fixedly connected to one side of the replacement shell B3, the connecting pipe 4 being externally connected to a water hose, and a replacement mechanism 5 fixedly connected to the inner wall of the replacement shell A2 for quickly replacing the gun head 1.

[0024] Next, the present invention will be further described in conjunction with the embodiments.

[0025] Embodiment 1:

[0026] Please refer to Figure 4 and Figure 5 , a cartridge case 31 is fixedly connected to the inner wall of the replacement shell B3;

[0027] The replacement mechanism 5 includes a fixed plate 51 fixedly connected to the inner wall of the replacement shell A2, a clamping block 52 fixedly connected to one side of the fixed plate 51, the clamping block 52 being matched with the cartridge case 31, a fixed block 53 fixedly connected to the inner wall of the replacement shell A2, an electric telescopic rod 54 fixedly connected to one side of the fixed block 53, and a fastening block 55 fixedly connected to one end of the electric telescopic rod 54.

[0028] Specifically, the clamping block 52 is connected to the cartridge case 31 through the fixing plate 51. When the fire direct current spray water gun needs to replace the gun head 1, move the replacement case A2 towards the replacement case B3. The lower surfaces of the fixing plate 51 and the clamping block 52 contact one side of the inner wall of the replacement case B3. At this time, rotate the replacement case A2 to engage the outer surface of the clamping block 52 with the inner wall of the cartridge case 31, realizing the fixation of the gun head 1 and the replacement case B3. After the outer surface of the clamping block 52 is engaged with the inner wall of the cartridge case 31, the electric telescopic rod 54 expands and contracts, and the electric telescopic rod 54 pushes the fastening block 55 to move, making one side of the fastening block 55 contact one side of the inner wall of the replacement case B3. At this time, the fastening block 55 is located on one side of the fixing plate 51, preventing the clamping block 52 and the cartridge case 31 from moving during the use of the gun head 1, causing the gun head 1 to shake left and right.

[0029] Embodiment 2:

[0030] Please refer to Figures 1-6 , a magnet 21 is fixedly connected to the inner wall of the replacement case A2, and a magnetic spring 6 is fixedly connected to one side of the cartridge case 31. When the lower surfaces of the fixing plate 51 and the clamping block 52 contact one side of the inner wall of the replacement case B3, the magnet 21 adsorbs the magnetic spring 6 and squeezes the magnetic spring 6. When the replacement case A2 is rotated to engage the outer surface of the clamping block 52 with the inner wall of the cartridge case 31, the magnetic spring 6 deforms. When the gun head 1 needs to be replaced, rotate the replacement case A2 to move the outer surface of the clamping block 52 out of the inner wall of the cartridge case 31. The electric telescopic rod 54 pushes the fastening block 55 to move, and the fastening block 55 is contracted towards the replacement case A2. At this time, the magnetic spring 6 loses the force of extrusion and ejects the replacement case A2 outward, accelerating the speed of replacing the gun head 1 and preventing firefighters from being unable to open the replacement case A2 in an emergency.

[0031] A sealing mechanism 7 for sealing the replacement mechanism 5 is fixedly connected to the outer surface of the replacement case B3. The sealing mechanism 7 includes a sealing ring 71 fixedly connected to the outer surface of the replacement case B3. The inner wall of the sealing ring 71 is sleeved with the outer surface of the replacement case A2. The sealing ring 71 closes the gap between the replacement case A2 and the replacement case B3, preventing water leakage during use.

[0032] A threaded ring body 72 is fixedly connected to the outer surface of the sealing ring 71. A rotating tube 73 is threadedly connected to the outer surface of the threaded ring body 72. An anti-slip strip A74 is fixedly connected to the outer surface of the rotating tube 73. The rotating tube 73 is connected to the replacement case A2 and the replacement case B3 through the threaded ring body 72. When the gun head 1 needs to be replaced or disassembled, first rotate the rotating tube 73, and then disassemble the gun head 1, realizing the protection and sealing functions of the rotating tube 73 for the replacement case A2 and the replacement case B3.

[0033] An anti-slip strip B41 is fixedly connected to the outer surface of the connecting pipe 4. The connecting pipe 4 is connected to the water hose through the anti-slip strip B41. Through the setting of the anti-slip strip B41, the friction between the water hose and the connecting pipe 4 is increased, reducing the probability of the water hose falling off.

[0034] The inner wall of the connecting pipe 4 is fixedly connected with a flow regulating valve 8, which can adjust the water flow. When replacing the gun head 1, the flow regulating valve 8 controls the water in the water hose not to flow, preventing the water in the water hose from flowing out when the firefighter replaces the gun head 1 and reducing the replacement speed.

[0035] Specifically, when the fire direct current spray water gun needs to replace the gun head 1, move the replacement shell A2 in the direction of the replacement shell B3. The lower surfaces of the fixing plate 51 and the clamping block 52 contact one side of the inner wall of the replacement shell B3. At this time, rotate the replacement shell A2 to engage the outer surface of the clamping block 52 with the inner wall of the cartridge case 31, realizing the fixation of the gun head 1 and the replacement shell B3. After the outer surface of the clamping block 52 is engaged with the inner wall of the cartridge case 31, the electric telescopic rod 54 expands and contracts, and the electric telescopic rod 54 pushes the fastening block 55 to move, making one side of the fastening block 55 contact one side of the inner wall of the replacement shell B3. At this time, the fastening block 55 is located on one side of the fixing plate 51, preventing the clamping block 52 and the cartridge case 31 from moving during the use of the gun head 1 and causing the gun head 1 to shake left and right. When the lower surfaces of the fixing plate 51 and the clamping block 52 contact one side of the inner wall of the replacement shell B3, the magnet 21 adsorbs the magnetic spring 6 and squeezes the magnetic spring 6. When rotating the replacement shell A2 to engage the outer surface of the clamping block 52 with the inner wall of the cartridge case 31, the magnetic spring 6 deforms. When the gun head 1 needs to be replaced, rotate the replacement shell A2 to move the outer surface of the clamping block 52 out of the inner wall of the cartridge case 31, and the electric telescopic rod 54 pushes the fastening block 55 to move, contracting the fastening block 55 to one side of the replacement shell A2. At this time, the magnetic spring 6 loses the force of extrusion and ejects the replacement shell A2 outwards, accelerating the speed of replacing the gun head 1 and preventing the firefighter from being unable to open the replacement shell A2 in an emergency. The sealing ring 71 seals the gap between the replacement shell A2 and the replacement shell B3, preventing water leakage during use, and realizing the effect of the stable gun head during the use of the gun head quick replacement device of the fire direct current spray water gun after replacing the gun head.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0037] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick-change structure for a gun head of a fire-fighting DC spray water gun, comprising a replacement shell A (2) fixedly connected to one side of the gun head (1), a replacement shell B (3) movably connected to one side of the replacement shell A (2), a connecting pipe (4) fixedly connected to one side of the replacement shell B (3), and the connecting pipe (4) is externally connected to a water hose, characterized in that: A replacement mechanism (5) for quickly replacing the gun head (1) is fixedly connected to the inner wall of the replacement shell A (2); The inner wall of the replacement shell B (3) is fixedly connected with a card shell (31); The replacement mechanism (5) comprises a fixing plate (51) fixedly connected to the inner wall of the replacement shell A (2); a clamping block (52) is fixedly connected to one side of the fixing plate (51); the clamping block (52) matches the clamping shell (31); a fixing block (53) is fixedly connected to the inner wall of the replacement shell A (2); an electric telescopic rod (54) is fixedly connected to one side of the fixing block (53); and a fastening block (55) is fixedly connected to one end of the electric telescopic rod (54).

2. The quick-change structure for the gun head of a fire-fighting direct current spray water gun according to claim 1, characterized in that: The inner wall of the replacement shell A (2) is fixedly connected with a magnet (21), and one side of the card shell (31) is fixedly connected with a magnetic spring (6).

3. The quick-change structure for the gun head of a fire-fighting direct current spray water gun according to claim 1, characterized in that: The outer surface of the replacement shell B (3) is fixedly connected to a sealing mechanism (7) for sealing the replacement mechanism (5), and the sealing mechanism (7) comprises a sealing ring (71) fixedly connected to the outer surface of the replacement shell B (3), and the inner wall of the sealing ring (71) is sleeved with the outer surface of the replacement shell A (2).

4. The quick-change structure for the gun head of a fire-fighting direct current spray water gun according to claim 3 is characterized in that: The outer surface of the sealing ring (71) is fixedly connected to a threaded ring body (72), the outer surface of the threaded ring body (72) is threadedly connected to a rotating tube (73), and the outer surface of the rotating tube (73) is fixedly connected to an anti-slip strip A (74).

5. The quick-change structure for the gun head of a fire-fighting direct current spray water gun according to claim 1, characterized in that: The outer surface of the connecting pipe (4) is fixedly connected with an anti-slip strip B (41).

6. The quick-change structure for the gun head of a fire-fighting direct current spray water gun according to claim 1, characterized in that: A flow regulating valve (8) is fixedly connected to the inner wall of the connecting pipe (4).

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