Fire-fighting lance capable of adjusting water yield

Abstract

According to the technical scheme, the fire-fighting lance is characterized in that an adjusting assembly is arranged and used for solving the problems that when water flows in a non-central position in the lance, the water flows oppositely in the lance, water outlet is not smooth, water pressure is affected, and water spraying is not facilitated; by rotating the lower disc and the upper disc, the lower disc and the upper disc drive the opening and closing blades to rotate through the lower sliding blocks and the upper sliding blocks, so that the angles of the multiple opening and closing blades are changed, the opening and closing blades are folded, the center space between the opening and closing blades is opened, water conveniently flows through the center space, and the size of the center space is controlled; therefore, the water yield of the fire-fighting lance can be adjusted, the flowing space of the water body can be conveniently adjusted, the purpose of adjusting the water yield is achieved, the water body is always kept to flow in the center, and the water flow pressure is prevented from being affected by hedging generated when the water body does not flow in the center.

Description

Technical Field

[0001] The utility model relates to the field of fire hoses, and particularly relates to a fire hose with adjustable water output. Background Art

[0002] A fire hose is a water jet tool for extinguishing fires. When connected to a water hose, it will spray a dense and solid water stream, which has the advantages of long range and large water volume. According to different jet forms and characteristics, it can be divided into straight stream hoses, spray hoses and multi-purpose hoses, etc. Among them, the commonly used hoses are straight stream and spray hoses. The water stream sprayed by a straight stream hose is columnar, with a long range, large flow and strong impact force. It is used to extinguish general solid material fires and for auxiliary cooling during firefighting. Generally, it can be divided into ordinary straight stream hoses and switch straight stream hoses. The switch straight stream hose is composed of additional components such as a ball valve switch, and the water flow can be controlled by the switch. At present, the fire hoses on the market have the disadvantage that the water output cannot be adjusted. Usually, during firefighting, the nozzle of the fire hose is fixed, and at the same time, the water pressure inside the hose is not easy to adjust, and it cannot cope with different situations.

[0003] Chinese Patent Publication No.: CN202120071066.5 provides a fire hose with adjustable water output. By the staff rotating the adjustment disc counterclockwise, the thread strip on the outer surface of the threaded rod intersects with the threaded hole, so that the adjustment disc, the threaded rod and the sealing ring move upward. At the same time, the sealing ring is separated from the water inlet pipe, so that water can enter the inside of the hose body through the water inlet pipe. Then the water is filtered through the grille. By the staff rotating the grip rod, the fixed block, the output rod and the water baffle rotate. The water baffle is adapted to the hose body, so that when the grip rod is rotated, the water output can be adjusted. By setting the grip, the anti-slip pad and the baffle, when the staff uses it, the water pressure is too high to increase the friction force and prevent slipping off. The overall structure is simple, and the purpose of adjustable water output of the fire hose is realized, so that different emergencies can be easily handled, and the work efficiency is effectively improved.

[0004] However, when the fire hose mentioned in the above patent adjusts the water flow, the water flow circulates at the bottom inside the hose, and the water flow is likely to form a counterflow inside the hose body, which affects the water pressure at the outlet. It may cause the water pressure to be insufficient when the water flows out, affecting the water outlet distance, and it is not convenient to maintain the stability of the water pressure while adjusting the water output. For this reason, we propose a fire hose with adjustable water output. Summary of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a fire hose with adjustable water output. By rotating the lower plate and the upper plate, the lower plate and the upper plate are driven by the lower slider and the upper slider to rotate the opening and closing leaves, so that the angles of the multiple opening and closing leaves are changed, and the opening and closing leaves are closed. The central space between the opening and closing leaves is opened to facilitate the flow of water through the central space. The size of the central space can be controlled to adjust the flow of water, thereby adjusting the water output of the fire hose, and then facilitating the adjustment of the space for the flow of water, so as to achieve the purpose of adjusting the water output, so that the water body always keeps flowing in the center, and prevents the impact caused by the water body flowing in the non-center from affecting the water flow and water pressure.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] The top end of the opening and closing member is fixedly provided with a toothed plate, and the toothed plate is connected with a toothed plate in a direction of rotation and is provided with a toothed plate so as to prevent the toothed plate from being damaged.

[0008] Furthermore, the upper slide groove is arc-shaped, and the direction of the upper slide groove is clockwise.

[0009] Furthermore, the downward sliding groove is in a straight line shape, and the direction of the downward sliding groove is counterclockwise.

[0010] Furthermore, the gun tail includes a tail handle, which is located at the outer end of the lower plate, the tail handle is fixedly connected to the lower plate, and the tail handle is connected to the gun head.

[0011] Furthermore, a water inlet pipe is rotatably connected inside the tail handle, the water inlet pipe runs through the rear end of the tail handle, and the rear end of the water inlet pipe is fixedly connected with a threaded connector.

[0012] Furthermore, the gun head includes a head handle, which is mounted on the outer end of the upper plate and located at the top end of the tail handle, and the head handle is rotatably connected to the tail handle.

[0013] Furthermore, a water outlet pipe is rotatably connected inside the head handle. The water outlet pipe is adapted to the water inlet pipe, and a spray head is fixedly connected to the front end of the water outlet pipe and located at the outer end of the head handle.

[0014] In summary, the present utility model has the following beneficial effects:

[0015] 1. By rotating the lower disk and the upper disk, the lower disk and the upper disk drive the opening and closing blades to rotate through the lower sliding block and the upper sliding block, so that the angles of multiple opening and closing blades are changed, thereby facilitating the adjustment of the space for water flow, achieving the purpose of adjusting the water output, and keeping the water flowing in the center all the time, preventing the impact of water pressure caused by the counterflow when the water does not flow in the center. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the schematic diagram of the overall structure in this embodiment;

[0017] Figure 2 is the schematic diagram of the cut-away structure in this embodiment;

[0018] Figure 3 is the schematic diagram of the disassembled structure in this embodiment;

[0019] Figure 4 is the schematic diagram of the disassembled structure of the adjusting component in this embodiment;

[0020] Figure 5 is the schematic diagram of the side view of the opening and closing blade in this embodiment.

[0021] In the figure, 1, adjusting component; 2, gun tail; 3, gun head; 101, lower disk; 102, upper disk; 103, opening and closing blade; 104, upper sliding block; 105, lower sliding block; 201, tail handle; 202, water inlet pipe; 203, threaded connection head; 301, head handle; 302, water outlet pipe; 303, spray head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0023] Among them, the same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0024] Refer to Figures 1 - 5As shown in the figure, a fire hose with adjustable water output in a preferred embodiment of the present utility model includes a hose tail 2. A hose head 3 is rotatably connected to the front end of the hose tail 2. An adjustment assembly 1 is installed at the front end of the hose tail 2 and at the rear end of the hose head 3. The adjustment assembly 1 includes a lower disc 101, which is installed at the front end of the hose tail 2. A plurality of equally spaced lower sliding grooves are provided on the outer wall of the lower disc 101. A plurality of equally spaced opening and closing leaves 103 are rotatably connected to the top of the lower disc 101. The top of the opening and closing leaf 103 is rotatably connected to an upper disc 102, and the upper disc 102 is connected to the hose head 3. A plurality of equally spaced upper sliding grooves are provided on the outer wall of the upper disc 102, and the upper sliding grooves are adapted to the lower sliding grooves. A plurality of equally spaced upper sliding blocks 104 are fixedly connected to the top of the opening and closing leaf 103, and the upper sliding blocks 104 are slidably connected to the upper sliding grooves. The bottom end of the opening and closing leaf 103 is fixedly connected with a plurality of equally spaced lower sliding blocks 105, and the lower sliding blocks 105 are slidably connected to the lower sliding grooves.

[0025] By rotating the lower disc 101 and the upper disc 102 relatively or in opposite directions, the lower disc 101 and the upper disc 102 rotate relatively or in opposite directions. When the lower disc 101 and the upper disc 102 move relatively, the lower disc 101 and the upper disc 102 drive the opening and closing leaf 103 to rotate through the lower sliding block 105 and the upper sliding block 104, so that the angles of the plurality of opening and closing leaves 103 are changed. The relative position between the opening and closing leaf 103 and the opening and closing leaf 103 is the center point, that is, the center of the hose tail 2 and the hose head 3. When the opening and closing leaf 103 changes the angle, the center size between the opening and closing leaf 103 and the opening and closing leaf 103 changes, and the space through which the water body flows also changes, thereby controlling the flow rate of the water body. Since the center between the opening and closing leaf 103 and the opening and closing leaf 103 is the center of the hose tail 2 and the hose head 3, when the fluid flows through, the water body can always flow through the center position. When the hose head 3 sprays out the water body, the water body will not form a counterflow to affect the water pressure.

[0026] The upper sliding groove is arc-shaped, and the direction of the upper sliding groove is clockwise.

[0027] The lower sliding groove is linear, and the direction of the lower sliding groove is counterclockwise.

[0028] The hose tail 2 includes a tail handle 201, which is located at the outer end of the lower disc 101. The tail handle 201 is fixedly connected to the lower disc 101 and is connected to the hose head 3.

[0029] A water inlet pipe 202 is rotatably connected inside the tail handle 201. The water inlet pipe 202 penetrates through the rear end of the tail handle 201, and a threaded connection head 203 is fixedly connected to the rear end of the water inlet pipe 202.

[0030] The hose head 3 includes a head handle 301, which is installed at the outer end of the upper disc 102 and at the top of the tail handle 201. The head handle 301 is rotatably connected to the tail handle 201.

[0031] The head handle 301 is internally rotatably connected with a water outlet pipe 302 , which is matched with the water inlet pipe 202 , and a nozzle 303 is fixedly connected to the front end of the water outlet pipe 302 and located at the outer end of the head handle 301 .

[0032] Specific implementation process: connect the threaded connector 203 to the water supply equipment, align the nozzle 303 with the position where water needs to be sprayed, relative to the lower plate 101 and the upper plate 102, the lower plate 101 and the upper plate 102 drive the opening and closing leaves 103 to rotate through the lower slider 105 and the upper slider 104, so that the angles of the multiple opening and closing leaves 103 change, the opening and closing leaves 103 and the opening and closing leaves 103 are closed, and the central space between the opening and closing leaves 103 and the opening and closing leaves 103 is opened, and the water body can pass through the opening and closing leaves 103 and the opening and closing leaves 10 3 and sprayed out through the nozzle 303, and when adjusting the water output, the rotation amplitude of the gun tail 2 and the gun head 3 is controlled to control the rotation amplitude of the lower plate 101 and the upper plate 102, and the size of the central space between the opening and closing leaves 103 and the opening and closing leaves 103 is controlled, so as to control the flow rate of the water body. Since the center between the opening and closing leaves 103 and the opening and closing leaves 103 is the center of the gun tail 2 and the gun head 3, when the fluid flows through, the water body can also always keep flowing in the center position. When the gun head 3 sprays out the water body later, the water body will not form a counter-attack to affect the water pressure.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A fire hose with adjustable water output, characterized in that: It comprises a gun butt (2), the front end of which is rotatably connected to a gun head (3), and an adjustment component (1) is installed at the rear end of the gun head (3) and at the front end of the gun butt (2); The adjustment assembly (1) comprises a lower plate (101), the lower plate (101) being mounted on the front end of the gun tail (2), the outer wall of the lower plate (101) being provided with a plurality of equally spaced lower sliding grooves, the top end of the lower plate (101) being rotatably connected to a plurality of equally spaced opening and closing leaves (103), the top end of the opening and closing leaves (103) being rotatably connected to an upper plate (102), the upper plate (102) being connected to the gun head (3), The outer wall of the upper plate (102) is provided with a plurality of upper slide grooves arranged at equal intervals, and the upper slide grooves are adapted to the lower slide grooves. The top end of the opening and closing leaf (103) is fixedly connected with a plurality of upper sliding blocks (104) arranged at equal intervals, and the upper sliding blocks (104) are slidably connected to the upper slide grooves. The bottom end of the opening and closing leaf (103) is fixedly connected with a plurality of lower sliding blocks (105) arranged at equal intervals, and the lower sliding blocks (105) are slidably connected to the lower slide grooves.

2. A fire-fighting water gun with adjustable water output according to claim 1, characterized in that: The upper slide groove is arc-shaped, and the direction of the upper slide groove is clockwise.

3. The fire-fighting water gun with adjustable water output according to claim 1, characterized in that: The downward slide groove is in a straight line shape, and the direction of the downward slide groove is counterclockwise.

4. The fire-fighting water gun with adjustable water output according to claim 1, characterized in that: The gun tail (2) comprises a tail handle (201), the tail handle (201) is located at the outer end of the lower plate (101), the tail handle (201) is fixedly connected to the lower plate (101), and the tail handle (201) is connected to the gun head (3).

5. The fire-fighting water gun with adjustable water output according to claim 4, characterized in that: The tail handle (201) is rotatably connected to a water inlet pipe (202) inside, the water inlet pipe (202) passes through the rear end of the tail handle (201), and the rear end of the water inlet pipe (202) is fixedly connected to a threaded connector (203).

6. The fire-fighting water gun with adjustable water output according to claim 4, characterized in that: The gun head (3) comprises a head handle (301), which is mounted on the outer end of the upper plate (102) and located at the top end of the tail handle (201), and the head handle (301) is rotatably connected to the tail handle (201).

7. A fire-fighting water gun with adjustable water output according to claim 6, characterized in that: The head handle (301) is rotatably connected to a water outlet pipe (302) inside, the water outlet pipe (302) is matched with the water inlet pipe (202), and a spray head (303) is fixedly connected to the front end of the water outlet pipe (302) and located at the outer end of the head handle (301).

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