Multi-functional fire-fighting lance

Abstract

The application provides a multifunctional fire-fighting lance, which comprises a lance body, an interface for leading water into the lance body, and a nozzle for spraying water in the lance body out of the lance body; the lance body is a coaxial double-pipe body, which comprises an outer pipe, an inner pipe coaxially arranged in the outer pipe, and water flow can be sprayed through the inner pipe or along the outer wall of the inner pipe; the inner pipe comprises a water flow direction shunt, a straight pipe arranged behind the water flow direction shunt, a conical push pipe arranged behind the straight pipe to reduce the diameter of water flow, and a nozzle arranged behind the push pipe; the lance body is a coaxial double-pipe body, the water flow direction can be selected to pass through the inner pipe or the outer pipe in the spraying mode, and different structures are adopted from water inlet to water outlet of the inner pipe, so that the spraying fire extinguishing effect is better.

Description

Technical Field

[0001] This invention relates to the field of fire-fighting equipment, specifically to a multi-functional fire hose. Background Technology

[0002] Fire hoses are water-spraying tools used for extinguishing fires. When connected to a fire hose, they spray a dense and powerful stream of water. Currently, the fire hoses commonly used in my country's firefighting field are mostly simple straight-stream, atomizing hoses. Their single function makes them inadequate for extinguishing fires at the scene. In various complex fire situations, firefighters need to carry different hose nozzles, which is inconvenient and hinders firefighting operations. Furthermore, switching between multiple nozzles is time-consuming and labor-intensive when facing fires of different sizes. Summary of the Invention

[0003] To address the above problems, this invention provides a multi-functional fire hose, achieved through the following technical solution:

[0004] A multi-functional fire hose reel includes a hose body, an interface for introducing water into the hose body, and a nozzle for spraying water from the hose body. The hose body is a coaxial double-tube structure, comprising: an outer tube and an inner tube coaxially disposed within the outer tube, through which water can flow or be sprayed out along the outer wall of the inner tube. The inner tube includes a water flow direction splitter, a straight tube following the water flow direction splitter, a tapered push tube following the straight tube to reduce the water flow diameter, and a nozzle following the push tube. When water passes through the inner tube, this structure of the inner tube increases the water pressure at the nozzle, achieving high-pressure direct current. High-pressure direct current can be used in high-rise buildings and at long distances from target fire sources. By pressurizing the water flow through the straight tube, push tube, and nozzle, it achieves a long range, high flow velocity, and non-spreading water jet, maximizing resource utilization at long distances.

[0005] Furthermore, a reversing structure is provided outside the water flow direction diversion port to enable water flow through the inner pipe and / or the outer pipe, thereby controlling whether the water flow passes through the inner pipe or the outer pipe.

[0006] Furthermore, the reversing structure is a circular reversing segment, the circumference of which is connected to a threaded sleeve, which is rotatably mounted on the outer tube; the direction of water flow is changed by rotating the threaded sleeve.

[0007] Furthermore, a ring-shaped horn-shaped water flow reflector is provided around the outside of the nozzle at the water outlet end of the nozzle, and the inner diameter of the nozzle is larger than the diameter of the water flow reflector; when the water flows along the outer wall of the inner pipe, the water flow is sprayed out after being reflected and dispersed by the horn-shaped water flow reflector.

[0008] Furthermore, the outer tube includes a first outer tube and a second outer tube, which are connected in a nested manner. The first outer tube is connected to the nozzle. When the water flows along the outer wall of the inner tube, the distance between the nozzle outlet end and the trumpet-shaped water flow reflector can be changed by adjusting the extension length of the first outer tube, thereby forming different water spraying modes: high-pressure umbrella-shaped direct current, high-pressure umbrella-shaped atomization, and blooming direct current.

[0009] Furthermore, a nozzle mounting portion is provided at the end of the first outer tube located at the nozzle, and the nozzle sleeve can slide on the nozzle mounting portion.

[0010] Furthermore, the nozzle mounting part is provided with several through holes around the pipe wall, and the nozzle mounting part is provided with an annular retaining ring for limiting the water flow reflector cover inside near the outlet direction. The position of the through holes is outside the maximum range of the water flow reflector cover that can move relative to the nozzle mounting part.

[0011] Furthermore, guide vanes are spirally arranged along the outer wall of the straight pipe to guide the direction of water flow.

[0012] Furthermore, the inner wall of the nozzle's water outlet end is configured as a trumpet-shaped outer edge, and a ring of turbulence-inducing teeth is provided on the outer edge.

[0013] The technical advantages of this invention are as follows: This fire hose has five spray patterns, namely high-pressure direct current, reverse water curtain personnel protection, high-pressure umbrella-shaped direct current, high-pressure umbrella-shaped atomization, and flower-shaped direct current. When facing different fire situations, it can switch between the five spray patterns to carry out rescue in the most effective and rapid way. Attached Figure Description

[0014] Figure 1 This is a structural diagram of a multi-functional fire hose.

[0015] Figure 2 This is a top view of a multi-functional fire hose.

[0016] Figure 3 This is a cross-sectional view of a multi-functional fire hose along AA.

[0017] Figure 4 This is a breakdown diagram of a multi-functional fire hose.

[0018] Figure 5 These are the axial, main, and sectional views of the first outer tube;

[0019] Figure 6 This is a schematic diagram of the inner tube and commutator segments;

[0020] Figure 7 This is a cross-sectional view of a water gun using a high-pressure direct current jet method;

[0021] Figure 8 This is a cross-sectional view of a water gun using a high-pressure umbrella-shaped atomization spray method;

[0022] Figure 9 This is a cross-sectional view of a water gun in a high-pressure umbrella-shaped direct current jet mode;

[0023] Figure 10 This is a cross-sectional view of a water gun in a direct-flow spray pattern.

[0024] Figure 11 This is a cross-sectional view of a water gun in the reverse water curtain personnel protection spray mode;

[0025] In the diagram, 100. Gun body, 110. Outer tube, 111. First outer tube, 1111. Nozzle mounting part, 11111. Through hole, 11112. Retaining ring, 11113. Groove slide, 112. Second outer tube, 120. Inner tube, 121. Water flow direction splitting port, 122. Straight tube, 123. Push tube, 124. Nozzle, 125. Water flow reflector cover, 126. Guide vane, 200. Interface, 300. Nozzle, 310. Turbulence tooth, 320. Protruding slider, 330. Reverse flow guide plate, 400. Reversing structure, 410. Reversing plate, 420. Screw sleeve, 500. Ball valve, 600. Slot, 700. Handle. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1-4 As shown, a multi-functional fire hose includes a hose body 100, an interface 200 for introducing water into the hose body, and a nozzle 300 for spraying water out of the hose body. The hose body 100 is a coaxial double-tube structure, including an outer tube 110 and an inner tube 120 coaxially disposed within the outer tube. The water flow direction can be through the inner tube or sprayed out along the outer wall of the inner tube. The inner tube 120 includes a water flow direction splitter 121, a straight tube 122 disposed after the water flow direction splitter, a tapered push tube 123 disposed after the straight tube 122 to reduce the water flow diameter, and a nozzle 124 disposed after the push tube. When water passes through the inner tube, this structure of the inner tube increases the water pressure at the nozzle, achieving a high-pressure direct current spray mode, such as... Figure 7 As shown, high-voltage direct current can be used in high-rise buildings and at long distances from target fire sources. It pressurizes the water flow through three parts: straight pipe, push pipe, and nozzle. It has a long range, fast flow rate, and the water column does not spread, maximizing the utilization of resources over long distances.

[0028] The water flow direction diversion port 121 is provided with a reversing structure 400 to realize the water flow through the inner pipe or the outer pipe, and to control whether the water flow is through the inner pipe 120 or the outer pipe 110.

[0029] like Figure 3-4 As shown, the commutation structure 400 includes a circular commutator segment 410, the circumference of which is connected to a threaded sleeve 420, which is rotatably mounted on the outer tube 110; a cross divides the circular commutator segment 410 into four parts, of which two diagonally opposite parts are hollow and two are solid, as shown. Figure 6 As shown, when the solid part covers the inlet of the inner tube 120, water flows through the outer tube, that is, along the outer wall of the inner tube. When the water flow needs to be reversed, simply rotate the screw sleeve. Because the reversing plate and the bushing are connected, the flow of water can be changed to whether it passes through the inner tube.

[0030] like Figure 3 As shown, a ring-shaped horn-shaped water flow reflector 125 is provided around the outside of the nozzle 124 at the water outlet end of the nozzle. The inner diameter of the nozzle 300 is larger than the diameter of the water flow reflector 125. When the water flows along the outer wall of the inner pipe, the water is sprayed out after being reflected and dispersed by the horn-shaped water flow reflector 125.

[0031] like Figure 3 As shown, the outer tube includes a first outer tube 111 and a second outer tube 112. The first outer tube 111 and the second outer tube 112 are connected telescopically by a nesting method. For example, the outer wall of the second outer tube 112 is provided with threads, and it is connected to the first outer tube 111 through the threads; the first outer tube 111 is connected to the nozzle 300; as shown... Figure 8-9 As shown, when the water flows along the outer wall of the inner pipe, the distance between the water outlet end of the nozzle 300 and the horn-shaped water flow reflector cover 125 can be changed by adjusting the extension length of the first outer pipe 111, thereby forming different water spraying modes: high-pressure umbrella-shaped direct current, high-pressure umbrella-shaped atomization, and flowering direct current.

[0032] like Figure 3 As shown, the first outer tube 111 has a nozzle mounting portion 1111 at its end near the nozzle, and the nozzle 300 is mounted on the nozzle mounting portion and can slide back and forth on the nozzle mounting portion; as Figure 5 As shown, a grooved slide 11113 is provided on the outer wall of the nozzle mounting part 1111, and a raised slider 320 (such as...) is provided inside the nozzle 300. Figure 3 As shown, it is embedded in the groove slide 11113 on the nozzle mounting part 1111, so that the nozzle 300 can move back and forth along the groove slide 11113.

[0033] like Figure 5As shown, the nozzle mounting portion 1111 is provided with a plurality of through holes 11111 around the pipe wall, and the nozzle mounting portion 1111 is provided with a ring-shaped retaining ring 11112 for limiting the water flow reflector cover 125 near the outlet direction; as Figure 11 As shown, when the baffle ring 11112 and the water flow reflector cover 125 come into contact, the water flow is prevented from continuing to move forward. The nozzle 300 moves forward along the groove slide 11113, exposing the through hole 11111, allowing the water flow to spray out from the through hole, thus forming a reverse water curtain to protect personnel spraying mode.

[0034] like Figure 4 , 6 As shown, guide vanes 126 are spirally arranged along the outer wall of the straight pipe 122 to guide the water flow direction, so that the water flow in the water gun channel will pre-swirl, which can better achieve the spraying effect.

[0035] like Figure 1 , 4 As shown, the inner wall of the water outlet of the nozzle 300 is configured as a trumpet-shaped outer edge, and a ring of turbulence teeth 310 is provided on the outer edge. The turbulence teeth divide the water flow into multiple streams and increase the pressure of each stream.

[0036] like Figure 1 As shown, a ball valve 500 is installed between the gun body 100 and the interface 200 to control the water flow. A slot 600 is provided on the outer wall of the water inlet interface 200 of the water gun. The handle 700 is installed in the slot and fixed with bolts. The detachable handle 700 can also be replaced with a bracket for irrigation in gardens and agriculture. It can also be installed on a water truck for industrial dust removal or environmental cooling, and can also be used for industrial cleaning.

[0037] like Figure 7-11 As shown, this multi-functional fire hose has multiple spray modes, namely:

[0038] like Figure 7 The diagram shows a high-pressure direct current jet method; by using the reversing structure 400 to rotate the screw sleeve 420, the water flow passes through the center of the inner pipe 120, forming a high-pressure direct current jet method.

[0039] like Figure 8 The image shows a high-pressure umbrella-shaped atomization spray method, such as... Figure 9 The high-pressure umbrella-shaped DC injection method shown is as follows: Figure 10The three spray modes shown are: a flower-shaped direct current spray mode; all three spray modes require the reversing structure 400 to rotate the screw sleeve 420 so that the water flow passes along the outer wall of the inner tube 120; then rotate the first outer tube 111, which rotates around the thread set on the outer wall of the second outer tube 112, changing the distance between the front end of the nozzle 300 and the water flow reflector cover 125. As the distance changes, the three spray modes of high pressure umbrella-shaped atomization, high pressure umbrella-shaped direct current, and flower-shaped direct current are formed in sequence.

[0040] like Figure 11 The reverse water curtain personnel protection spray method shown; this spray method is in the case of... Figure 10 In the spray mode of the shown flower-shaped DC jet method, the first outer tube 111 continues to rotate, the retaining ring 11112 and the water flow reflector cover 125 come into contact, preventing the water flow from continuing to move forward. Then the nozzle 300 is pulled forward, and the nozzle 300 slides forward along the groove slide 11113, exposing the through hole 11111, so that the water flow is sprayed out from the through hole, thereby forming a reverse water curtain to protect personnel spray mode. As shown in the figure, the rear end of the nozzle 300 is made into a reverse flow guide plate 330 similar to a horn. After the water flow comes out from the through hole 11111, it is guided by the water flow of the reverse flow guide plate 330, thereby adjusting the water flow diffusion angle.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-functional fire-fighting lance comprising a body (100), a connection (200) for water to be fed into the body, a nozzle (300) for water in the body (100) to be sprayed out of the body, the body being a coaxial double pipe body, comprising: An outer tube (110) and an inner tube (120) coaxially arranged in the outer tube; The inner tube (120) comprises a water flow direction shunt (121), a straight tube (122) arranged behind the water flow direction shunt (121), a conical push tube (123) arranged behind the straight tube (122) to reduce the diameter of the water flow, and a nozzle (124) arranged behind the push tube (123); The outer tube (110) comprises a first outer tube (111) and a second outer tube (112), and the first outer tube (111) and the second outer tube (112) are connected in an extendable and retractable manner by nesting. The water outlet end of the nozzle (124) is surrounded by a ring-shaped horn-shaped water flow reflection cover (125) arranged outside the nozzle (124), and the inner diameter of the nozzle (300) is larger than the diameter of the water flow reflection cover (125). The end of the first outer tube (111) located at the nozzle is provided with a nozzle mounting portion (1111), and the nozzle (300) is mounted on the nozzle mounting portion (1111) and can slide forward and backward on the nozzle mounting portion (1111). The nozzle mounting portion (1111) is provided with a plurality of through holes (11111) around the tube wall, and the inner portion of the nozzle mounting portion close to the outlet direction is provided with an annular stop ring (11112) for limiting the water flow reflection cover (125), and the position of the through hole (11111) is outside the maximum position range of the water flow reflection cover (125) relative to the nozzle mounting portion. The rear end of the nozzle (300) is made into a reverse flow guide plate (330) similar to a horn, and the water flow is guided after passing through the reverse flow guide plate (330), thereby adjusting the water flow diffusion angle.

2. The multi-functional fire fighting lance according to claim 1, wherein The water flow direction shunt (121) is provided with a reversing structure (400) for realizing water flow through the inner tube or the outer tube.

3. The multi-functional fire fighting lance according to claim 2, wherein The reversing structure (400) comprises a circular reversing sheet (410), and the circumference of the reversing sheet is connected with a screw sleeve (420), and the screw sleeve (420) is arranged outside the gun body (100) and can rotate around the gun body (100).

4. The multi-functional fire fighting lance according to claim 1, wherein The outer wall of the straight tube (122) is provided with guide vanes (126) arranged along the tube wall in a spiral manner for guiding the water flow direction.

5. The multi-functional fire fighting lance according to claim 1, wherein The water outlet end of the nozzle (300) is provided with a horn-shaped eave, and a ring of turbulence teeth (310) is arranged on the eave.

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