Fire gun quick change structure and fire gun

Abstract

The utility model belongs to the technical field of fire-fighting guns, and particularly relates to a fire-fighting gun quick-change structure and a fire-fighting gun, the fire-fighting gun quick-change structure comprises a first connecting piece connected with a fire-fighting gun body and a second connecting piece connected with a fire-fighting gun nozzle, the first connecting piece is detachably connected with the second connecting piece, and a connecting groove for the second connecting piece to insert is arranged in the first connecting piece. A structure clamped with the second connecting piece is arranged in the connecting groove; the gun body and the sprayers of the fire gun are connected through the quick-change structure, the first connecting piece can be inserted into the connecting groove of the second connecting piece and clamped through the clamping structure, but when the fire gun needs to be disassembled, only the clamping structure needs to be loosened, connection between the gun body and the different sprayers can be achieved through disassembly and assembly between the first connecting piece and the second connecting piece, and the fire gun is convenient to use. Therefore, when a fire extinguishing task is executed, only one gun body and a plurality of sprayers need to be carried, and the workload of firemen is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire fighting guns, and particularly relates to a quick replacement structure for a fire fighting gun and a fire fighting gun. Background Technique

[0002] A fire fighting gun is a device specifically used for extinguishing fires. It sprays high-pressure water streams at the flames to quickly extinguish the fire sources and protect the lives and property of people. Fire fighting guns are usually made of metal, with the characteristics of high temperature resistance and corrosion resistance, ensuring normal use in extreme environments. Fire fighting guns have the advantages of simple operation and high fire extinguishing efficiency, and are widely used in the fields of fire fighting, forestry, petroleum, chemical industry, etc.

[0003] For example, a water-foam integrated fire fighting gun disclosed in a Chinese patent with the publication number CN215538024U includes a gun shell with a water passing cavity. A ball valve is rotatably arranged in the water passing cavity of the gun shell. A switch handle is fixedly connected to the outer wall of the ball valve. The switch handle is hinged to the outer wall of the gun shell and is located outside the gun shell. The water inlet end of the gun shell is hermetically connected to a water inlet interface. The water outlet end of the gun shell is hermetically connected to a movable direct. A flow regulating switch is fixedly sleeved on the outer periphery of the movable direct. An outer rectangular direct is fixedly inserted into the inner periphery of the movable direct. A water type regulating sleeve is fixedly sleeved on the outer periphery of the movable direct. A foaming head is sleeved on the outer periphery of the water type regulating sleeve. A positioning nail penetrates through the circumference of the foaming head. The positioning nail has a concave hole. A spring is arranged in the concave hole. The outer end of the spring abuts against a steel ball. A plurality of positioning grooves are recessed axially along the outer wall of the water type regulating sleeve. The steel ball is embedded in any one of the positioning grooves. An umbrella-shaped spraying member in a ring shape is fixedly arranged on the water spraying end of the water type regulating sleeve.

[0004] Although the above-mentioned fire fighting gun integrates the functions of a water gun and a foam gun, thus eliminating the process of replacing the water gun to shorten the rescue time; however, according to its functions and uses, fire fighting guns can be subdivided into various types such as water guns, foam guns, dry powder guns, etc. The core differences are mainly reflected in the design of the nozzles. It is difficult to integrate all different types of nozzles on the same nozzle. Therefore, when performing fire extinguishing tasks, firefighters still need to carry multiple types of fire fighting guns at the same time for emergencies. This situation undoubtedly increases the burden and complexity of fire fighting operations. In view of this, it is urgent to develop an efficient and convenient quick replacement structure to achieve a quick and stable connection between the gun body of the fire fighting gun and various nozzles, so as to improve the efficiency and safety of fire extinguishing operations. Content of the Utility Model

[0005] The utility model discloses a quick replacement structure for a fire fighting gun and a fire fighting gun, mainly solving the problem that at present, various fire fighting guns lack a unified quick replacement structure, resulting in firefighters having to carry different fire fighting guns when performing fire extinguishing tasks, with a large operation burden.

[0006] To achieve the above object, the utility model provides a quick-change structure for a fire fighting gun, which includes a first connecting member connected to the gun body of the fire fighting gun and a second connecting member connected to the nozzle of the fire fighting gun. The first connecting member and the second connecting member are detachably connected. A connecting groove for the insertion of the second connecting member is provided in the first connecting member, and a clamping structure for connecting with the second connecting member is provided in the connecting groove.

[0007] Preferably, the clamping structure includes a plurality of clamping posts circumferentially arranged on the side wall of the connecting groove, and a plurality of clamping grooves adapted to the clamping posts are circumferentially arranged on the surface of the second connecting member. The clamping posts are rotationally clamped with the clamping grooves.

[0008] Preferably, an elastic ejecting mechanism is provided on one side of the first connecting member close to the second connecting member. A positioning groove communicating with the inner end of the clamping groove is provided at the inner end of the clamping groove. The elastic ejecting mechanism is used to eject the clamping post to the inner end of the positioning groove.

[0009] Preferably, the elastic ejecting mechanism includes a mounting groove provided in the first connecting member, a spring and a ejecting post movably mounted in the mounting groove. The end of the ejecting post extends outside the mounting groove and can abut against the side wall of the second connecting member.

[0010] Preferably, a sealing ring is provided in the connecting groove.

[0011] Preferably, the clamping post is detachably connected to the first connecting member.

[0012] Preferably, a plurality of mounting holes are circumferentially provided on the surface of the first connecting member. The clamping post is threadedly connected to the mounting hole, and the bottom end of the clamping post extends into the connecting groove.

[0013] The utility model also provides a fire fighting gun, which includes a gun body, a grip and a nozzle. The gun body and the nozzle are connected through a quick-change structure. The quick-change structure includes a first connecting member connected to the gun body of the fire fighting gun and a second connecting member connected to the nozzle of the fire fighting gun. The first connecting member and the second connecting member are detachably connected. A connecting groove for the insertion of the second connecting member is provided in the first connecting member, and a clamping structure for connecting with the second connecting member is provided in the connecting groove.

[0014] Preferably, the clamping structure includes a plurality of clamping posts circumferentially arranged on the side wall of the connecting groove, and a plurality of clamping grooves adapted to the clamping posts are circumferentially arranged on the surface of the second connecting member. The clamping posts are rotationally clamped with the clamping grooves.

[0015] Preferably, an elastic ejecting mechanism is provided on one side of the first connecting member close to the second connecting member. A positioning groove communicating with the inner end of the clamping groove is provided at the inner end of the clamping groove. The elastic ejecting mechanism is used to eject the clamping post to the inner end of the positioning groove.

[0016] The technical solution provided by the utility model has at least the following technical effects:

[0017] The quick-change structure for a fire hose and the fire hose disclosed in this application connect the hose body and the nozzle through the quick-change structure. The first connector can be inserted into the connection groove of the second connector and clamped by the clamping structure. When disassembly is required, only the clamping structure needs to be loosened. By disassembling and assembling between the first connector and the second connector, the connection between the hose body and different nozzles can be achieved. Therefore, when performing a fire extinguishing task, only one hose body and multiple nozzles need to be carried, effectively reducing the workload of firefighters. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 Schematic exploded view of the quick-change structure of Embodiment 1 of the present invention;

[0020] Figure 2 Schematic structure diagram of the clamping post of Embodiment 1 of the present invention;

[0021] Figure 3 Schematic structure diagram of the elastic ejection mechanism of Embodiment 1 of the present invention;

[0022] Figure 4 Schematic structure diagram of the fire hose of Embodiment 2 of the present invention;

[0023] Figure 5 Schematic exploded view of the fire hose of Embodiment 2 of the present invention;

[0024] Figure 6 One of the schematic internal structure diagrams of the fire hose of Embodiment 2 of the present invention;

[0025] Figure 7 Another schematic internal structure diagram of the fire hose of Embodiment 2 of the present invention;

[0026] Figure 8 Schematic structure diagram of various fire hoses of Embodiment 2 of the present invention.

[0027] Main reference numeral descriptions: 1. First connector; 2. Second connector; 3. Connection groove; 4. Clamping post; 5. Card slot; 6. Elastic ejection mechanism; 61. Spring; 62. Ejector pin; 7. Positioning groove; 8. Nozzle; 9. Grip; 10. Hose body. Detailed Embodiments

[0028] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as a limitation of the present utility model.

[0029] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present utility model, "a plurality" means two or more unless otherwise specifically defined. Embodiment

[0031] As an embodiment of the present utility model, referring to Figure 1 , this embodiment discloses a quick-change structure for a fire hose nozzle, including a first connector 1 connected to the body 10 of the fire hose nozzle, and a second connector 2 connected to the nozzle 8 of the fire hose nozzle. The first connector 1 and the second connector 2 are detachably connected. A connection groove 3 for inserting the second connector 2 is provided in the first connector 1. A sealing ring is provided in the connection groove 3 to improve the airtightness after the connection between the first connector 1 and the second connector 2. A clamping structure for engaging with the second connector 2 is provided in the connection groove 3.

[0032] Referring to Figure 2 , Figure 3 , the clamping structure includes a plurality of clamping posts 4 circumferentially provided on the side wall of the connection groove 3, and a plurality of clamping grooves 5 circumferentially provided on the surface of the second connector 2 and adapted to the clamping posts 4. The clamping posts 4 and the clamping grooves 5 are rotationally engaged. The clamping posts 4 and the first connector 1 are detachably connected. Specifically, a plurality of mounting holes are circumferentially provided on the surface of the first connector 1, and the clamping posts 4 are threadedly connected to the mounting holes, and the bottom end of the clamping posts 4 extends into the connection groove 3.

[0033] Four clamping posts 4 are provided in this embodiment and are evenly distributed at intervals on the side wall of the connecting groove 3. Four clamping grooves 5 are also evenly arranged circumferentially. The clamping groove 5 extends obliquely inward from the cross-section of the first connecting member 1. During the connection process, the second connecting member 2 is inserted into the connecting groove 3. After the clamping post 4 enters the clamping groove 5, the first connecting member 1 is rotated. The clamping post 4 enters the end of the clamping groove 5 along the clamping groove 5, realizing the connection between the first connecting member 1 and the second connecting member 2. Conversely, simply rotating in the reverse direction can separate the first connecting groove 3 from the second connecting groove 3, and rapid disassembly, installation, and replacement of a single gun body 10 and multiple nozzles 8 can be achieved.

[0034] In order to make the connection between the first connecting member 1 and the second connecting member 2 tighter, an elastic ejection mechanism 6 is provided on the side of the first connecting member 1 close to the second connecting member 2. The elastic ejection mechanism 6 includes an installation groove provided in the first connecting member 1, a spring 61 movably installed in the installation groove, and a ejector post 62. The end of the ejector post 62 extends outside the installation groove and can abut against the side wall of the second connecting member 2. A positioning groove 7 communicated with the clamping groove 5 is provided at the end of the clamping groove 5. There is a certain angle between the positioning groove 7 and the clamping groove 5. In this embodiment, the positioning groove 7 and the clamping groove 5 form a 90-degree angle. The elastic ejection mechanism 6 is used to eject the clamping post 4 to the inner end of the positioning groove 7. When the clamping post 4 moves to the inner end of the clamping groove 5, it directly enters the positioning groove 7, and then under the elastic force of the elastic ejection mechanism 6, it directly abuts tightly against the side wall of the positioning groove 7. Since there is a certain angle between the positioning groove 7 and the clamping groove 5, the clamping post 4 is not easily rotated and separated from the positioning groove 7, realizing the stable connection between the first connecting member 1 and the second connecting member 2. When it is necessary to disassemble the first connecting member 1 and the second connecting member 2, simply press the second connecting member 2, so that the elastic ejection mechanism 6 retracts after being squeezed by the second connecting member 2 until the clamping post 4 moves to the connection between the positioning groove 7 and the clamping groove 5, and then rotating in the reverse direction can separate the first connecting member 1 and the second connecting member 2. Rapid disassembly, installation, and replacement of different nozzles 8 and the gun body 10 can be achieved. Embodiment

[0035] Refer to Figures 4 - 7, this embodiment discloses a fire fighting gun, which includes a gun body 10, a grip 9 and a nozzle 8. The gun body 10 and the nozzle 8 are connected through the quick-change structure in Embodiment 1. The quick-change structure includes a first connector 1 connected to the gun body 10 of the fire fighting gun and a second connector 2 connected to the nozzle 8 of the fire fighting gun. The first connector 1 and the second connector 2 are detachably connected. A connection groove 3 for the second connector 2 to be inserted is provided in the first connector 1, and a clamping structure for connecting with the second connector 2 is provided in the connection groove 3. The clamping structure includes a plurality of clamping columns 4 circumferentially arranged on the side wall of the connection groove 3, and a plurality of clamping grooves 5 adapted to the clamping columns 4 are circumferentially arranged on the surface of the second connector 2. The clamping columns 4 and the clamping grooves 5 are rotationally clamped. An elastic ejection mechanism 6 is provided on one side of the first connector 1 close to the second connector 2, and a positioning groove 7 communicating with the inner end of the clamping groove 5 is provided at the inner end of the clamping groove 5. The elastic ejection mechanism 6 is used to eject the clamping column 4 to the inner end of the positioning groove 7.

[0036] Refer to Figure 8 , corresponding first connectors 1 are provided on nozzles 8 of different types. Therefore, when performing a fire extinguishing task, only one gun body 10 and various types of nozzles 8 need to be carried, effectively reducing the operation burden of firefighters, and the disassembly, replacement speed and efficiency of the nozzles 8 are high.

[0037] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A quick-change structure for a fire hose nozzle, characterized in that, It includes a first connector (1) connected to the body (10) of the fire hose nozzle, and a second connector (2) connected to the nozzle (8) of the fire hose. The first connector (1) and the second connector (2) are detachably connected. A connection groove (3) for the insertion of the second connector (2) is provided in the first connector (1), and a clamping structure for connecting with the second connector (2) is provided in the connection groove (3).

2. The quick-change structure of the fire hose according to claim 1, characterized in that The clamping structure includes a plurality of clamping posts (4) circumferentially arranged on the side wall of the connection groove (3), and a plurality of clamping grooves (5) adapted to the clamping posts (4) are circumferentially arranged on the surface of the second connector (2). The clamping posts (4) are rotationally clamped with the clamping grooves (5).

3. The quick-change structure of the fire hose according to claim 2, characterized in that, An elastic ejection mechanism (6) is provided on one side of the first connector (1) close to the second connector (2). A positioning groove (7) communicating with the inner end of the clamping groove (5) is provided at the inner end of the clamping groove (5). The elastic ejection mechanism (6) is used to eject the clamping post (4) to the inner end of the positioning groove (7).

4. The quick-change structure of a fire hose according to claim 3, characterized in that, The elastic ejection mechanism (6) includes a mounting groove provided in the first connector (1), a spring (61) and a ejector post (62) movably mounted in the mounting groove. The end of the ejector post (62) extends outside the mounting groove and can abut against the side wall of the second connector (2).

5. The quick-change structure of a fire hose according to claim 1, characterized in that, A sealing ring is provided in the connection groove (3).

6. The quick-change structure of the fire hose nozzle according to claim 2, wherein, The clamping post (4) is detachably connected to the first connector (1).

7. The quick-change structure of the fire hose nozzle according to claim 6, characterized in that, A plurality of mounting holes are circumferentially provided on the surface of the first connector (1). The clamping post (4) is threadedly connected to the mounting hole, and the bottom end of the clamping post (4) extends into the connection groove (3).

8. A fire hose gun, comprising a gun body (10), a grip (9) and a nozzle (8), characterized in that, The body (10) of the fire hose nozzle and the nozzle (8) are connected by a quick-change structure. The quick-change structure includes a first connector (1) connected to the body (10) of the fire hose nozzle and a second connector (2) connected to the nozzle (8) of the fire hose. The first connector (1) and the second connector (2) are detachably connected. A connection groove (3) for the insertion of the second connector (2) is provided in the first connector (1), and a clamping structure for connecting with the second connector (2) is provided in the connection groove (3).

9. The fire hose according to claim 8, characterized in that, The clamping structure includes a plurality of clamping posts (4) circumferentially arranged on the side wall of the connection groove (3), and a plurality of clamping grooves (5) adapted to the clamping posts (4) are circumferentially arranged on the surface of the second connector (2). The clamping posts (4) are rotationally clamped with the clamping grooves (5).

10. The fire hose according to claim 9, characterized in that, An elastic ejection mechanism (6) is provided on one side of the first connector (1) close to the second connector (2). A positioning groove (7) communicating with the inner end of the clamping groove (5) is provided at the inner end of the clamping groove (5). The elastic ejection mechanism (6) is used to eject the clamping post (4) to the inner end of the positioning groove (7).

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