A multifunctional fire-fighting water gun with interchangeable gun heads

Abstract

The present invention discloses a multifunctional fire-fighting water gun with multiple replaceable gun heads, comprising a gun body, a U-shaped handle and a fixed handle arranged on the gun body; the two ends of the U-shaped handle are rotatably arranged on the horizontal sides of the gun body, and the hand grip of the U-shaped handle is located on the upper side of the gun body; the fixed handle is fixedly arranged on the lower side of the gun body; the rear end of the gun body is rotatably provided with a water inlet interface; the water inlet interface is connected to the water pipe; the front end connecting part of the gun body is matched with the connecting parts of several gun heads through a self-locking pin structure; the self-locking pin structure comprises a pin, a locking groove, an elastic positioning block and a positioning groove; the pin and the locking groove are matched for locking, and the elastic positioning block and the positioning groove are matched for locking; the pin and the elastic positioning block are arranged on one of the connecting parts of the gun body and the gun head, and the locking groove and the positioning groove are arranged on the other connecting part of the gun body and the gun head; the pin is arranged on the side of the corresponding connecting part; the structure is simple, the functions are diverse, and it is convenient to quickly disassemble and replace various joints, it is easy to use, and the fire extinguishing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting water guns, and in particular to a multifunctional fire-fighting water gun with multiple interchangeable gun heads. Background Art

[0002] Fire hoses are water-throwing tools used for firefighting. When connected to a hose, they spray a dense, rich stream of water. They offer advantages such as long range and high water output. Depending on the type and characteristics of the jet, they can be categorized as direct current, spray, and multi-use. Direct current and spray are the most commonly used.

[0003] The current fire hoses have a single function, a complex structure, and are inconvenient to use, which affects the fire extinguishing efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a multifunctional fire-fighting water gun with interchangeable gun heads.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a multifunctional fire-fighting water gun with multiple interchangeable gun heads, comprising a gun body, a U-shaped handle and a fixed handle provided on the gun body; the two ends of the U-shaped handle being rotatably provided on the horizontal sides of the gun body, with the gripping portion of the U-shaped handle being located on the upper side of the gun body; the fixed handle being fixedly provided on the lower side of the gun body; a water inlet interface being rotatably provided on the rear end of the gun body; the water inlet interface being connected to a water pipe; a front end connecting portion of the gun body being cooperatively connected to connecting portions of the multiple gun heads via a self-locking pin structure;

[0006] The self-locking pin structure includes a pin, a locking slot, an elastic positioning block and a positioning slot; the pin and the locking slot cooperate to lock, and the elastic positioning block cooperate to lock; the pin and the elastic positioning block are arranged on one of the connecting parts of the gun body and the gun head, and the locking slot and the positioning slot are arranged on the other connecting part of the gun body and the gun head; the pin is arranged on the side of the corresponding connecting part; the elastic positioning block is arranged on the end of the corresponding connecting part; the locking slot is arranged on the side of the corresponding connecting part; and the positioning slot is arranged on the end of the corresponding connecting part;

[0007] The locking groove includes an entry groove and a locking groove; the outer end inlet of the entry groove is connected to the end face of the corresponding connecting part; the inner end of the entry groove is connected to the locking groove; the entry groove is an arc-shaped oblique groove extending circumferentially and axially on the outer side face of the corresponding connecting part; the locking groove is a strip groove arranged axially along the connecting part; the inner end of the entry groove is connected to an end of the strip groove away from the outer end of the entry groove; when the pin enters the locking groove, the elastic positioning block enters the positioning groove at the same time, and the elastic positioning block radially interferes in the positioning groove so that the pin is locked in the locking groove.

[0008] Furthermore, the positioning groove includes a sliding inclined groove and a tightening groove; the outer end of the sliding inclined groove is flush with the end surface of the connecting portion, and the inner end of the sliding inclined groove is flush with the bottom of the tightening groove.

[0009] Furthermore, the surface of the elastic positioning block is a spherical surface.

[0010] Furthermore, the water inlet interface is a 65mm card-type or internal buckle fire-fighting interface.

[0011] Furthermore, the plurality of gun heads include one or more of a direct current spray gun head, a horizontal plane spray gun head, a Class A foam gun head, a low-expansion foam gun head, a medium-expansion foam gun head, a self-priming foam gun head and a puncture gun head.

[0012] Furthermore, a flow regulating ring is provided on the DC spray gun head, and a flow marking protrusion is provided on the outer side of the flow regulating ring; and a flowering marking protrusion is provided on the front anti-collision head of the DC spray gun head.

[0013] Furthermore, the pin is detachably mounted on the corresponding connection portion by means of a threaded connection.

[0014] Furthermore, it also includes a fire extinguishing system storage box, the gun body and a plurality of gun heads are placed in the fire extinguishing system storage box, and rollers are arranged on the fire extinguishing system storage box.

[0015] The technical effects of the present invention are as follows: A turbine fire-fighting gun can be equipped with a quick-change gun body with multiple gun heads of different functions, and various gun heads can be quickly replaced within seconds to meet various fire-fighting and rescue application needs. The self-locking pin structure of the gun body joint can quickly install and remove various gun heads within seconds under pressure-free conditions. The gun body and gun head are made of corrosion-resistant aluminum alloy, and the water inlet of the gun body can be rotated infinitely to achieve the function of one gun with multiple uses. It can spray water, A and B foam mixtures, achieve low and medium foaming multiples, and realize puncture and demolition and other common functions. It can easily cope with various complex fire scenes, with simple structure, easy to use and high fire extinguishing efficiency.

[0016] In the past, other manufacturers equipped each product with a complete gun, and different gun heads could be selected to achieve different effects according to the needs of fire fighting and rescue operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an outline diagram of the gun body in the embodiment;

[0018] Figure 2 Schematic diagram of the front part of the gun body in the embodiment;

[0019] Figure 3 is an internal cross-sectional view of the gun body in the embodiment;

[0020] Figure 4 This is an outline diagram of a DC spray gun head in the embodiment;

[0021] Figure 5 This is an internal cross-sectional view of a DC spray gun head in an embodiment;

[0022] Figure 6 This is an outline diagram of a horizontal plane spray gun head in the embodiment;

[0023] Figure 7 This is an internal cross-sectional view of a horizontal plane spray gun head in an embodiment;

[0024] Figure 8 This is an outline diagram of a foam gun tip with a medium multiple in the embodiment;

[0025] Figure 9 This is an internal cross-sectional view of a medium-multiplicity foam gun head in an embodiment;

[0026] Figure 10 This is an outline diagram of the puncture gun tip in the embodiment;

[0027] Figure 11 This is an outline diagram of a low-expansion foam gun tip in the embodiment;

[0028] Figure 12 1 is an external view of a gun head with a foam tube in an embodiment.

[0029] Figure numerals: 1, gun body; 11, U-shaped handle; 12, fixed handle; 13, water inlet interface; 2, gun head; 21, flow adjustment ring; 22, flow marking protrusion; 23, flower marking protrusion; 3, pin; 31, entry slot; 32, locking slot; 4, elastic positioning block; 41, sliding into the inclined slot; 42, tightening slot. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0031] like Figure 1-12 As shown, a multifunctional fire-fighting water gun with multiple interchangeable gun heads 2 includes a gun body 1, on which a U-shaped handle 11 and a fixed handle 12 are provided; the two ends of the U-shaped handle 11 are rotatably arranged on the horizontal sides of the gun body 1, and the gripping portion of the U-shaped handle 11 is located on the upper side of the gun body 1; the fixed handle 12 is fixedly arranged on the lower side of the gun body 1; a water inlet interface 13 is rotatably provided at the rear end of the gun body 1; the water inlet interface 13 is connected to a water pipe; the front connection portion of the gun body 1 is connected to the connection portions of several gun heads 2 through a self-locking pin structure.

[0032] The self-locking pin structure includes a pin 3, a locking groove, an elastic positioning block 4 and a positioning groove; the pin 3 and the locking groove cooperate to lock, and the elastic positioning block 4 and the positioning groove cooperate to lock; the pin 3 and the elastic positioning block 4 are arranged on one of the connecting parts of the gun body 1 and the gun head 2, and the locking groove and the positioning groove are arranged on the other connecting part of the gun body 1 and the gun head 2; the pin 3 is arranged on the side of the corresponding connecting part; the elastic positioning block 4 is arranged at the end of the corresponding connecting part; the locking groove is arranged on the side of the corresponding connecting part; and the positioning groove is arranged at the end of the corresponding connecting part.

[0033] The locking groove includes an entry groove 31 and a locking groove 32; the outer end inlet of the entry groove 31 is connected to the end surface of the corresponding connecting portion; the inner end of the entry groove 31 is connected to the locking groove 32; the entry groove 31 is an arc-shaped oblique groove extending circumferentially and axially on the outer side surface of the corresponding connecting portion; the locking groove 32 is a strip groove arranged axially along the connecting portion; the inner end of the entry groove 31 is connected to an end of the strip groove away from the outer end of the entry groove 31; when the pin 3 enters the locking groove 32, the elastic positioning block 4 simultaneously enters the positioning groove, and the elastic positioning block 4 radially abuts in the positioning groove, causing the pin 3 to be locked in the locking groove 32. The provision of the entry groove 31 increases the axial connection contact area between the gun head 2 and the gun body 1, improves the connection stability of the gun head 2 and the gun body 1, realizes the function of quickly replacing different gun heads 2, and is convenient and quick to install.

[0034] The positioning groove includes a sliding inclined groove 41 and a tightening groove 42; the outer end of the sliding inclined groove 41 is flush with the end surface of the connecting portion, and the inner end of the sliding inclined groove 41 is flush with the bottom of the tightening groove 42. The setting of the sliding inclined groove 41 facilitates the positioning block to enter the tightening groove 42 from the sliding inclined groove 41, and the operation is convenient and quick.

[0035] The surface of the elastic positioning block 4 is spherical, which facilitates the sliding of the elastic positioning block on the opposite end surface of the connection portion, reduces friction resistance, and is convenient and quick to install.

[0036] The water inlet interface 13 is a 65mm card-type or inner buckle fire interface.

[0037] The plurality of gun heads 2 include one or more of a direct current spray gun head, a horizontal plane spray gun head, a Class A foam gun head, a low-expansion foam gun head, a medium-expansion foam gun head, a self-priming foam gun head and a puncture gun head.

[0038] A flow regulating ring 21 is provided on the DC spray gun head 2, and a flow indicating protrusion 22 is provided on the outer side of the flow regulating ring 21; a flowering indicating protrusion 23 is provided at the front anti-collision head of the DC spray gun head 2 to clearly indicate the flowering position, making it easy to use the flowering, DC and spray states in places with poor visibility.

[0039] The pin 3 is detachably mounted on the corresponding connecting portion by a threaded connection, which facilitates disassembly and replacement, reduces maintenance costs, and extends the service life of the gun body 1.

[0040] The fire extinguisher also includes a fire extinguisher storage box, where the gun body 1 and several gun tips 2 are placed. The box is equipped with wheels, making it easy to move, saving time and effort. The spray pattern can be quickly changed; the flow rate can be easily controlled using the flow adjustment ring 21; a flushing position is provided for convenient and effective cleaning. It is suitable for pulse application and is suitable for high-voltage electrical fires. It can be used with water or foam as the medium.

[0041] The above only describes in detail the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the scope of protection of the present invention.

Claims

1. A multifunctional fire-fighting water gun with multiple interchangeable gun heads, characterized in that: The gun body comprises a U-shaped handle and a fixed handle. The two ends of the U-shaped handle are rotatably arranged on the horizontal sides of the gun body, and the grip portion of the U-shaped handle is located on the upper side of the gun body. The fixed handle is fixedly arranged on the lower side of the gun body. A water inlet interface is rotatably arranged at the rear end of the gun body. The water inlet interface is connected to a water pipe. The front connection portion of the gun body is connected to the connection portions of the multiple gun heads through a self-locking pin structure. The self-locking pin structure includes a pin, a locking slot, an elastic positioning block and a positioning slot; the pin and the locking slot cooperate to lock, and the elastic positioning block cooperate to lock; the pin and the elastic positioning block are arranged on one of the connecting parts of the gun body and the gun head, and the locking slot and the positioning slot are arranged on the other connecting part of the gun body and the gun head; the pin is arranged on the side of the corresponding connecting part; the elastic positioning block is arranged on the end of the corresponding connecting part; the locking slot is arranged on the side of the corresponding connecting part; and the positioning slot is arranged on the end of the corresponding connecting part; The locking groove includes an entry groove and a locking groove; the outer end inlet of the entry groove is connected to the end face of the corresponding connecting part; the inner end of the entry groove is connected to the locking groove; the entry groove is an arc-shaped oblique groove extending circumferentially and axially on the outer side face of the corresponding connecting part; the locking groove is a strip groove arranged axially along the connecting part; the inner end of the entry groove is connected to the end of the strip groove away from the outer end of the entry groove; when the pin enters the locking groove, the elastic positioning block simultaneously enters the positioning groove, and the elastic positioning block radially interferes with the positioning groove so that the pin is locked in the locking groove; The positioning groove includes a sliding inclined groove and a tightening groove; the outer end of the sliding inclined groove is flush with the end surface of the connecting part, and the inner end of the sliding inclined groove is flush with the bottom of the tightening groove; the pin can be detachably installed on the corresponding connecting part through a threaded connection.

2. A multifunctional fire-fighting water gun with multiple interchangeable gun heads according to claim 1, characterized in that: The surface of the elastic positioning block is a spherical surface.

3. The multifunctional fire-fighting water gun with multiple interchangeable gun heads according to claim 1, characterized in that: The water inlet interface is a 65mm card-type or internal buckle fire interface.

4. The multifunctional fire-fighting water gun with multiple interchangeable gun heads according to claim 1, characterized in that: The plurality of gun heads include one or more of a direct current spray gun head, a horizontal plane spray gun head, a Class A foam gun head, a low-expansion foam gun head, a medium-expansion foam gun head, a self-priming foam gun head and a puncture gun head.

5. The multifunctional fire-fighting water gun with multiple interchangeable gun heads according to claim 4, characterized in that: A flow regulating ring is provided on the DC spray gun head, and a flow marking protrusion is provided on the outer side of the flow regulating ring; a flowering marking protrusion is provided on the front anti-collision head of the DC spray gun head.

6. The multifunctional fire-fighting water gun with multiple interchangeable gun heads according to claim 1, characterized in that: The utility model also comprises a fire extinguishing system storage box, wherein the gun body and a plurality of gun heads are placed in the fire extinguishing system storage box, and rollers are arranged on the fire extinguishing system storage box.

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