Protective water gun capable of blocking heat radiation

Abstract

The utility model discloses a protective water gun capable of blocking heat radiation, which comprises a gun body, a plurality of water curtain holes are arranged on the gun body in the circumferential direction, a sleeve is arranged on the outer side of the gun body, the sleeve is movably connected with the gun body, an adjusting rod is further arranged on the gun body, the adjusting rod is rigidly connected with the sleeve through a hinge rod, and when the adjusting rod is pushed, the water curtain holes are arranged on the water curtain holes. The sleeve is driven to slide back and forth in the axial direction of the gun body, so that the sleeve shields the water curtain hole or exposes the water curtain hole; a water curtain hole is formed in a gun body, a sleeve sliding front and back in the axial direction of the gun body is arranged on the outer side of the gun body, the relative position of the sleeve and the gun body is adjusted through an adjusting rod, and when a water curtain is needed to isolate heat radiation, the sleeve is adjusted to expose the water curtain hole to form the water curtain; when high-pressure water flow needs to be concentrated for concentrated fire extinguishing, the adjusting rod is pulled to enable the sleeve to shield the water curtain hole, the water pressure in the gun body is improved, the requirements of different fire scene environments can be met, and the application scene is wider.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fire fighting appliance, in particular to a fire fighting water gun. BACKGROUND

[0002] When rescuing in a fire, the high-temperature heat radiation released by the flame can burn the firefighters, in order to protect the firefighters and block the large amount of heat radiation generated in the fire, some manufacturers have developed a water gun that can form a water curtain, such as the fire fighting water gun disclosed in the patent document with publication number CN114470590A, which sets a connecting pipe on the barrel of the water gun, so that water flows from the barrel into the connecting pipe and is sprayed from the nozzle at the other end of the connecting pipe to form a water curtain, shielding the heat radiation in the fire scene, but this structure has certain deficiencies, the connecting pipe and the nozzle cannot be closed, resulting in a decrease in water pressure when the fire fighting water gun needs to concentrate on extinguishing the fire, so the fire fighting water gun cannot provide high-pressure water flow for extinguishing the fire, and it is difficult to meet the needs of various fire scene environments. SUMMARY

[0003] In order to improve the applicability of the water gun in multiple scenarios, so that it can not only form a water curtain barrier to isolate heat radiation and protect firefighters, but also concentrate high-pressure water flow for concentrated fire extinguishing, the utility model provides a protective water gun for blocking heat radiation.

[0004] The technical scheme adopted by the utility model to solve its technical problems is:

[0005] A protective water gun for blocking heat radiation, comprising a gun body, a plurality of water curtain holes are arranged circumferentially on the gun body, a sleeve is installed outside the gun body, the sleeve is in movable connection with the gun body, an adjusting rod is further arranged on the gun body, the adjusting rod is in rigid connection with the sleeve through a hinge rod, when the adjusting rod is pushed, the sleeve slides along the axial direction of the gun body, so that the sleeve shields the water curtain holes or exposes the water curtain holes.

[0006] The front end of the gun body is provided with a booster part, the booster part is a tapered structure with a small front end and a large rear end, the gun body is further provided with a water curtain part, the water curtain holes are arranged circumferentially along the water curtain part, and the inner wall of the water curtain part is provided with a baffle for guiding the flow of water to the water curtain holes.

[0007] The included angle between the baffle and the inner wall of the water curtain part is 30°<α<60°; since the pressure of the water flow inside the gun body is relatively high when the gun body is in use, great care needs to be taken when the baffle is arranged, otherwise the baffle will bear a relatively large water flow pressure, requiring the firefighters to hold the gun body with great force to keep it stable; in order to solve the above technical problems, the included angle between the baffle 14 and the inner wall of the water curtain part 12 is set to any angle between 30 degrees and 60 degrees in the technical scheme, the baffle guides the high-pressure water flow in the gun body to the water curtain holes, so that the range of the formed water curtain is larger.

[0008] The water curtain hole is arranged as a strip-shaped hole; the fire-fighting water gun disclosed in the patent document with the publication number CN114470590A is provided with a connecting pipe on the barrel of the water gun, so that water flows from the barrel into the connecting pipe and is sprayed from the spray head at the other end of the connecting pipe to form a water curtain; generally, the water flow sprayed from the hole of the spray head is in a straight line or in a mist shape, and it is difficult to form a large-range water curtain similar to a screen in front of the firefighter; in order to solve the problem of the incomplete water curtain protection, the technical scheme of the present application adopts the strip-shaped hole arranged on the gun body to expand the coverage of the formed water curtain, so that a large-range water curtain screen similar to a screen can be formed between the firefighter and the fire scene, and the protection effect of the water gun is improved.

[0009] The water curtain hole is arranged as a strip-shaped hole with a narrow outer part and a wide inner part; the water curtain hole is arranged as a strip-shaped hole with a narrow outer part and a wide inner part, so that the sprayed water curtain can be subjected to secondary pressurization, so that a larger range of water curtain is formed, and the heat radiation prevention effect is improved.

[0010] The gun body is provided with an adjusting support, and the lower end of the adjusting rod is hingedly connected to the adjusting support through a hinge shaft.

[0011] The sleeve is provided with a hinge seat, one end of the hinge rod is hingedly connected to the hinge seat, and the other end is hingedly connected to the adjusting rod.

[0012] The gun body and the sleeve are further provided with a rubber ring for sealing.

[0013] The beneficial effects of the present application are: the water curtain hole is arranged on the gun body, and the sleeve sliding along the axial direction of the gun body is arranged on the outside of the gun body; the relative position of the sleeve and the gun body is adjusted through the adjusting rod; when the water curtain is needed to isolate heat radiation, the sleeve is adjusted to expose the water curtain hole to form a water curtain; when the concentrated high-pressure water flow is needed to concentrate fire extinguishing, the sleeve is shielded from the water curtain hole by pulling the adjusting rod, the water pressure in the gun body is improved, the needs of different fire scenes can be met, and the application scenarios are more extensive. BRIEF DESCRIPTION OF DRAWINGS

[0014] The present application will be further described below in combination with the drawings and examples.

[0015] Fig. 1 is one of the structural schematic diagrams of the present application.

[0016] Fig. 2 is a sectional view of the present application.

[0017] Fig. 3 is the second structural schematic diagram of the present application. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model is further explained in detail below in combination with specific implementation manners and with reference to the drawings.

[0019] It is understood that the above description is only exemplary and is not intended to limit the scope of the utility model.

[0020] Referring to Figs. 1 to 3 The utility model discloses a protection water gun of blocking heat radiation, including the gun body 1, a plurality of water curtain holes 10 are arranged in the circumference in the gun body 1, the gun body 1 outside installs a sleeve 2, the sleeve 2 forms the movable connection with the gun body 1, still be provided with an adjusting rod 3 on the gun body 1, the adjusting rod 3 and the sleeve 2 between form rigid connection through the hinged link 4, when pushing the adjusting rod 3, drive the sleeve 2 along the axial of the gun body 1 and slide back and forth, make the sleeve 2 shield water curtain hole 10 or make water curtain hole 10 expose, the utility model discloses is provided with water curtain hole on the gun body, and is provided with the sleeve that slides back and forth along the axial of the gun body on the gun body outside, adjusts the relative position of sleeve and the gun body through the adjusting rod, when needing water curtain to insulate heat radiation, adjusts the sleeve and makes water curtain hole expose, forms water curtain, when needing concentrated high pressure water flow to carry out concentrated fire extinguishing, pull the adjusting rod and make the sleeve shield water curtain hole, improve the water pressure in the gun body, can satisfy the need of different fire environment, and the applicable scene is more extensive.

[0021] The front end of the gun body 1 is provided with a booster part 11, the booster part 11 is the taper structure of front thin and rear thick, the gun body 1 is also provided with water curtain part 12, the water curtain hole 10 is arranged along the circumference of water curtain part 12, the inner wall of water curtain part 12 is provided with the baffle 14 for guiding the flow direction of water flow to water curtain hole 10, the included angle of the baffle 14 and the inner wall of water curtain part 12 is 30 ° < α < 60 °, the baffle 14 changes the direction of high pressure water flow, and the concentrated water flow output by the booster part 11 is uniformly dispersed to the circumferentially arranged water curtain hole 10, to avoid that the local pressure is too large caused by the direct impact of water flow on the orifice.This structure expands the coverage range of water curtain, while reducing the flow load of single water curtain hole.The baffle 14 guides the water flow to form a controllable laminar flow state, reducing the energy loss caused by disorderly turbulent flow.Through the orderly deflection of water flow direction, the stability and continuity of water curtain injection form are ensured.In the high pressure water flow environment, the baffle 14 forms an inclined surface support through the inclination angle, disperses the impact force of water flow on the orifice structure, and reduces the stress concentration risk of the inner wall of water curtain part 12.

[0022] When the angle a between the baffle 14 and the inner wall of the water curtain part 12 is less than 30°, the deflection angle of the water flow is too small to effectively cover the circumferential water curtain hole, resulting in incomplete formation of the water curtain; when the angle a between the baffle 14 and the inner wall of the water curtain part 12 is greater than 60°, the vertical component of the water flow impacting the baffle significantly increases, increasing the recoil force of the gun body. In the embodiment, the angle a between the baffle 14 and the inner wall of the water curtain part 12 is preferably set in the interval of 30° to 60° to balance the flow distribution effect and operation stability.

[0023] The water curtain hole 10 is provided as a strip-shaped hole; the water curtain hole 10 is a necked structure with an inner width and an outer width; the necked structure with an inner width and an outer width realizes water flow acceleration through a gradually changing cross section. The design of a wide inlet section reduces the initial flow velocity and reduces the formation of turbulent flow; the gradually narrowing outlet section promotes water flow acceleration and forms a laminar flow trend. This flow velocity gradient can effectively control energy loss, so that the water flow reaches an ideal kinetic energy state at the outlet. Cross-section contraction leads to an increase in dynamic pressure and a decrease in static pressure. The structure with an inner width and an outer width forms a pressure gradient before the water flow exits, which can avoid the impact of high static pressure on the hole wall and ensure the jet distance through dynamic pressure enhancement.

[0024] The gun body 1 is provided with an adjusting support 13, and the lower end of the adjusting rod 3 is hinged to the adjusting support 13 through a hinge shaft; the sleeve 2 is provided with a hinge seat 20, one end of the hinge rod 4 is hinged to the hinge seat 20, and the other end is hinged to the adjusting rod 3; as shown in Fig. 3 When it is necessary to concentrate high-pressure water flow to the gun head for concentrated fire extinguishing, the adjusting rod is pulled to rotate counterclockwise, which drives the hinge rod connected thereto, thereby driving the sleeve connected to the hinge rod to slide forward along the axial direction of the gun body, so that the sleeve shields the water curtain hole; conversely, the adjusting rod is pulled to rotate clockwise, so that the water curtain hole is exposed; the length of the water curtain hole exposed can also be adjusted by the adjusting rod to improve the water pressure of the sprayed water curtain and further form a larger range of water curtain.

[0025] A rubber ring 5 for sealing is also installed between the gun body 1 and the sleeve 2; the front end of the sleeve 2 is provided with a containing groove for placing the rubber ring, and in production, the sleeve is first sleeved on the outside of the gun body, and then the rubber ring is inserted into the containing groove, so that a closed cavity is formed between the sleeve and the gun body.

[0026] The mainstream interface types for fire hoses currently include: internal snap-fit ​​interfaces, quick-connect interfaces, and international standard interfaces. Internal snap-fit ​​interfaces achieve quick connection via rotating claws and are commonly used in domestic fire protection systems. Quick-connect interfaces support threaded connections and are compatible with high-pressure hoses. International standard interfaces include German interfaces (using a double-flange structure, compatible with European fire truck equipment), American NH interfaces (with a spring-locking device, suitable for North American high-pressure fire protection systems), and Japanese quick-connect interfaces (allowing for one-handed operation through a snap-fit ​​structure, improving emergency response efficiency). In this embodiment, the internal snap-fit ​​interface is preferred. It achieves quick connection through the interaction of rotating claws and a sliding groove, significantly reducing operation time and improving efficiency compared to traditional threaded connections. Its self-locking structure automatically locks after engagement, preventing accidental loosening, making it particularly suitable for high-intensity applications such as firefighting. Furthermore, it eliminates the need to distinguish the orientation of the interface (unlike snap-fit ​​interfaces which require matching male / female connectors), supports 360° rotation for docking, and significantly reduces the rate of operational errors. Similarly, manufacturers can also customize production when manufacturing protective fire hoses according to specific needs.

[0027] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A protective water gun for blocking heat radiation, comprising a gun body (1), characterized in that... The gun body (1) has several water curtain holes (10) arranged in the circumferential direction. A sleeve (2) is installed on the outside of the gun body (1). The sleeve (2) is movably connected to the gun body (1). An adjusting rod (3) is also provided on the gun body (1). The adjusting rod (3) and the sleeve (2) are rigidly connected by a hinge rod (4). When the adjusting rod (3) is pushed, the sleeve (2) is driven to slide back and forth along the axial direction of the gun body (1), so that the sleeve (2) covers the water curtain holes (10) or exposes the water curtain holes (10).

2. The protective water gun for blocking heat radiation according to claim 1, characterized in that... The gun body (1) is provided with a pressure boosting part (11) at the front end. The pressure boosting part (11) is a conical structure that is thinner at the front and thicker at the back. The gun body (1) is also provided with a water curtain part (12). The water curtain holes (10) are arranged around the water curtain part (12). The inner wall of the water curtain part (12) is provided with a baffle (14) for guiding the water flow to the water curtain holes (10).

3. The protective water gun for blocking heat radiation according to claim 2, characterized in that... The angle between the baffle (14) and the inner wall of the water curtain (12) is 30° < α < 60°.

4. The protective water gun for blocking heat radiation according to claim 1, characterized in that... The water curtain hole (10) is configured as a strip hole.

5. The protective water gun for blocking heat radiation according to claim 1, characterized in that... The water curtain hole (10) has a constricted structure that is wider inside and narrower outside.

6. The protective water gun for blocking heat radiation according to claim 1, characterized in that... An adjustment support (13) is provided on the gun body (1), and the lower end of the adjustment rod (3) is hinged to the adjustment support (13) through a hinge shaft.

7. The protective water gun for blocking heat radiation according to claim 1, characterized in that... The sleeve (2) is provided with a hinge seat (20), one end of the hinge rod (4) is hinged to the hinge seat (20), and the other end is hinged to the adjusting rod (3).

8. The protective water gun for blocking heat radiation according to claim 1, characterized in that... A sealing rubber ring (5) is also installed between the gun body (1) and the sleeve (2).

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