Fire gun buckle capable of adjusting water flow

Abstract

The utility model relates to the field of fire gun buckles, in particular to a fire gun buckle capable of adjusting water flow. The technical problem to be solved by the utility model is to provide the fire-fighting gun buckle capable of adjusting the water flow, which can prevent the fire-fighting gun buckle and a water hose from being strained and broken due to overlarge pressure in the fire-fighting gun buckle and the water hose and prolong the service life of the fire-fighting gun buckle and the water hose. A fire-fighting gun buckle capable of adjusting water flow comprises a gun buckle body, a fire-fighting gun body, an impact eliminating structure, a rubber sealing ring, an outer shell, a piston block, a sealing ring, a buffer plate, a buffer spring and a pressure release valve. The fire-fighting gun buckle and the water hose can be prevented from being strained and broken due to the fact that the pressure in the fire-fighting gun buckle and the water hose is too large, and the service life of the fire-fighting gun buckle and the water hose is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of fire-fighting gun buckles, in particular to a fire-fighting gun buckle capable of adjusting water flow. Background Art

[0002] The water flow sprayed by the DC water gun is columnar, with a long range, large flow and strong impact. It is used to extinguish general solid material fires and assist in cooling during fire extinguishing. It can generally be divided into ordinary DC water guns and switch DC water guns. The switch DC water gun is composed of components such as a ball valve switch, and the water flow can be adjusted through the switch.

[0003] During use, the switch DC water gun often changes the fluid pressure and fluid flow in the pipeline through the ball valve switch. Due to the incompressibility of the liquid, the liquid in the pipeline will expand like a solid fixed cylinder, causing water hammer or water hammer, especially when the water flow is quickly cut off or adjusted. This phenomenon will cause problems such as strain and deformation of the fire gun buckle. In severe cases, the inner wall of the fire hose will rupture, and the service life will be shortened. Therefore, it is urgent to develop a fire gun buckle with adjustable water flow that can prevent excessive pressure in the fire gun buckle and the water hose, causing the fire gun buckle and the water hose to be strained and ruptured, and increase the service life of the fire gun buckle and the water hose. Utility Model Content

[0004] In order to overcome the disadvantages that a switch DC water gun is prone to water hammer or water hammer in the process of changing the fluid pressure and fluid flow in the pipeline through the ball valve switch during use, causing the fire gun buckle to be strained and deformed, and in severe cases, causing the inner wall of the fire hose to rupture, the technical problem to be solved by the utility model is to provide a fire gun buckle with adjustable water flow that can prevent the pressure in the fire gun buckle and the water hose from being too high, causing the fire gun buckle and the water hose to be strained and ruptured, thereby increasing the service life of the fire gun buckle and the water hose.

[0005] The utility model is achieved by the following specific technical means:

[0006] A fire gun buckle capable of adjusting water flow comprises a gun buckle body, a through hole is arranged at the center of the gun buckle body, and a connecting thread is arranged at one end of the through hole; a fire gun body is arranged at one side of the gun buckle body, and the fire gun body is fixedly connected to the gun buckle body through the connecting thread; a ball valve switch for adjusting water flow is also fixedly installed on the gun buckle body; a buckle shaft section is also protrudingly arranged at one end of the gun buckle body away from the fire gun body, a buckle groove is arranged on the end surface of the buckle shaft section away from the fire gun body, and buckle pipe threads are arranged on opposite sides of the buckle groove; a sealing ring placement groove is also arranged on the end surface of the buckle shaft section away from the fire gun body, and a rubber sealing ring is fixedly installed in the sealing ring placement groove;

[0007] A water hole is provided on the outer diameter surface of the gun buckle body, which passes through the gun buckle body and is connected with a through hole provided at the center of the gun buckle body; an impact elimination structure is also provided on one side of the outer diameter surface of the gun buckle body, and the impact elimination structure is connected with the water hole provided on the outer diameter surface of the gun buckle body through a thread; the impact elimination structure includes an outer shell, a movable cavity is provided at the center of the outer shell, a water inlet hole connected with the movable cavity is provided at the lower end, and the lower end of the water inlet hole is connected with the water hole provided on the outer diameter surface of the gun buckle body; a piston block is slidably provided in the movable cavity provided in the outer shell, and a sealing ring is fixedly provided on the outer diameter surface of the piston block; a buffer plate is also provided in the movable cavity provided in the outer shell, and the buffer plate is slidably provided on the side of the piston block close to the water hole; a buffer spring is also fixedly provided between the piston block and the buffer plate; a pressure relief valve is fixedly connected to the end of the outer shell away from the water hole through a threaded hole, and the pressure relief valve is connected with the movable cavity provided in the outer shell.

[0008] Furthermore, the buffer plate is clearance-matched with the movable cavity provided in the outer shell, so that the buffer plate can slide smoothly in the movable cavity to prevent jamming.

[0009] Furthermore, a spring fixing groove is provided at the lower end of the piston block and above the buffer plate; the buffer spring can be effectively fixed to prevent the buffer spring from deflecting, thereby ensuring the stable operation of the buffer spring.

[0010] Furthermore, the diameter of the water inlet hole of the outer shell is smaller than the diameter of the movable cavity, and an anti-escape shoulder is provided at the connection between the water inlet hole and the movable cavity to prevent the buffer plate from escaping from the movable cavity of the outer shell.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model achieves the effect of preventing the fire-fighting gun buckle and the water hose from being over-pressured, thereby preventing the fire-fighting gun buckle and the water hose from being strained and broken, and prolonging the service life of the fire-fighting gun buckle and the water hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional connection structure of the utility model.

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 3 It is a cross-sectional structural schematic diagram of the utility model.

[0016] Figure 4 It is a schematic cross-sectional view of the impact elimination structure of the utility model.

[0017] The marks in the accompanying drawings are: 1-gun buckle body, 2-fire gun body, 3-impact elimination structure, 4-rubber sealing ring, 11-snap-on shaft section, 12-snap-on groove, 13-snap-on pipe thread, 14-ball valve switch, 15-water hole, 31-outer shell, 32-piston block, 33-sealing ring, 34-buffer plate, 35-buffer spring, 36-pressure relief valve, 311-movable cavity, 312-water inlet hole. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings: Example

[0019] A fire gun buckle capable of adjusting water flow, such as Figure 1-4 As shown, it includes a gun buckle body 1, a through hole is provided in the center of the gun buckle body 1, and a connecting thread is provided at one end of the through hole; a fire gun body 2 is provided on one side of the gun buckle body 1, and the fire gun body 2 is fixedly connected to the gun buckle body 1 through the connecting thread; a ball valve switch 14 for adjusting the water flow is also fixedly installed on the gun buckle body 1; a buckle shaft section 11 is also protrudingly provided at the end of the gun buckle body 1 away from the fire gun body 2, and a buckle groove 12 is provided on the end surface of the buckle shaft section 11 away from the fire gun body 2, and buckle pipe teeth 13 are provided on opposite sides of the buckle groove 12; a sealing ring 33 placement groove is also provided on the end surface of the buckle shaft section 11 away from the fire gun body 2, and a rubber sealing ring 4 is fixedly installed in the sealing ring 33 placement groove;

[0020] The outer diameter surface of the gun buckle body 1 is provided with a water hole 15 that penetrates the gun buckle body 1 and is connected with a through hole provided at the center of the gun buckle body 1; an impact elimination structure 3 is also provided on one side of the outer diameter surface of the gun buckle body 1, and the impact elimination structure 3 is connected with the water hole 15 provided on the outer diameter surface of the gun buckle body 1 through a thread; the impact elimination structure 3 includes an outer shell 31, and an active cavity 311 is provided at the center of the outer shell 31, and a water inlet hole 312 that is connected with the active cavity 311 is provided at the lower end, and the lower end of the water inlet hole 312 is connected with the water through hole provided on the outer diameter surface of the gun buckle body 1 15 is connected; a piston block 32 is slidably arranged in the movable cavity 311 of the outer shell 31, and a sealing ring 33 is fixedly arranged on the outer diameter surface of the piston block 32; a buffer plate 34 is also arranged in the movable cavity 311 of the outer shell 31, and the buffer plate 34 is slidably arranged on the side of the piston block 32 close to the water through hole 15; a buffer spring 35 is also fixedly arranged between the piston block 32 and the buffer plate 34; a pressure relief valve 36 is fixedly connected to the end of the outer shell 31 away from the water through hole 15 through a threaded hole, and the pressure relief valve 36 is connected to the movable cavity 311 of the outer shell 31.

[0021] Working principle:

[0022] The fire gun head is fixedly connected to the gun buckle body 1 through a thread. When in use, the gun buckle body 1 is buckled with the connecting sleeve at one end of the fire hose through the buckle pipe tooth 13 set on one side of the buckle shaft section 11; the high-pressure water flow flows out from the fire hydrant, and the high-pressure water flow enters the fire water gun buckle body 1 through the fire hose, and the water flow is adjusted by the ball valve switch 14 in the gun buckle body 1, and finally sprayed out through the fire gun head to extinguish the fire.

[0023] When it is necessary to adjust the water flow rate and close the ball valve during the fire extinguishing process, or when the ball valve switch 14 needs to be closed immediately after the fire extinguishing is completed, the inertia of the water flow causes the water flow pressure to increase sharply and rush forward. At this time, the water flows into the outer shell 31 from the water through hole 15 set on the gun buckle body 1, and the water flow first hits the buffer plate 34. The huge impact force of the water flow causes the buffer plate 34 to move upward, and the water flow is buffered by the buffer spring 35 between the buffer plate 34 and the piston block 32. Then the impact of the water flow acts on the piston block 32, pushing the piston block 32 to move upward, and the piston block 32 squeezes the gas in the active cavity 311 to play a damping effect and absorb the impact force of the water flow. Under the dual effects of the gas pressure in the active cavity 311 and the irregular water hammer, the piston moves up and down to form a dynamic balance, effectively eliminating irregular water hammer wave oscillations; preventing the impact force of the water flow from directly acting on the gun buckle body 1 and the fire hose.

[0024] Through the buffering of the buffer plate 34 and the buffer spring 35 and the buffering of the gas in the active cavity 311, the irregular water hammer impact can be effectively alleviated or eliminated under the double buffering effect, thereby ensuring the stability of the use of the gun button body 1 and improving the service life of the gun button body 1; at the same time, a pressure relief valve 36 is arranged on the upper end of the outer shell 31, so that when the piston block 32 moves upward and the air pressure reaches the upper limit value, the gas in the active cavity 311 of the outer shell 31 is released to avoid the inner wall of the outer shell 31 from rupture due to excessive pressure.

[0025] Although the present disclosure has been described in detail with reference to the exemplary embodiments, the present disclosure is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the present disclosure.

Claims

1. A fire-fighting gun buckle capable of adjusting water flow, comprising a gun buckle body (1), wherein a through hole is provided at the center of the gun buckle body (1), and a connecting thread is provided at one end of the through hole; a fire-fighting gun body (2) is provided at one side of the gun buckle body (1), and the fire-fighting gun body (2) is fixedly connected to the gun buckle body (1) through the connecting thread; a ball valve switch (14) for adjusting water flow is also fixedly installed on the gun buckle body (1); a buckle shaft section (11) is also protrudingly provided at one end of the gun buckle body (1) away from the fire-fighting gun body (2), and a buckle groove (12) is provided on the end surface of the buckle shaft section (11) away from the fire-fighting gun body (2), and buckle pipe threads (13) are provided on opposite sides of the buckle groove (12); a sealing ring (33) placement groove is also provided on the end surface of the buckle shaft section (11) away from the fire-fighting gun body (2), and a rubber sealing ring (4) is fixedly installed in the sealing ring (33) placement groove; It is characterized in that The outer diameter surface of the gun buckle body (1) is provided with a water hole (15) penetrating the gun buckle body (1) and communicating with a through hole provided at the center of the gun buckle body (1); an impact elimination structure (3) is also provided on one side of the outer diameter surface of the gun buckle body (1), and the impact elimination structure (3) is communicated with the water hole (15) provided on the outer diameter surface of the gun buckle body (1) through a thread; the impact elimination structure (3) comprises an outer shell (31), a movable cavity (311) is provided at the center of the outer shell (31), and a water inlet hole (312) communicating with the movable cavity (311) is provided at the lower end, and the lower end of the water inlet hole (312) is connected to the water through hole (15) provided on the outer diameter surface of the gun buckle body (1). The outer shell (31) is connected to the water passage hole (15); a piston block (32) is slidably disposed in the movable cavity (311) of the outer shell (31), and a sealing ring (33) is fixedly disposed on the outer diameter surface of the piston block (32); a buffer plate (34) is also disposed in the movable cavity (311) of the outer shell (31), and the buffer plate (34) is slidably disposed on the side of the piston block (32) close to the water passage hole (15); a buffer spring (35) is also fixedly disposed between the piston block (32) and the buffer plate (34); a pressure relief valve (36) is fixedly connected to the end of the outer shell (31) away from the water passage hole (15) through a threaded hole, and the pressure relief valve (36) is connected to the movable cavity (311) of the outer shell (31).

2. A fire-fighting gun buckle capable of adjusting water flow according to claim 1, characterized in that: The buffer plate (34) is clearance-matched with a movable cavity (311) provided in the outer shell (31).

3. A fire-fighting gun buckle capable of adjusting water flow according to claim 1, characterized in that: A spring fixing groove is provided at the lower end of the piston block (32) and above the buffer plate (34).

4. A fire-fighting gun buckle capable of adjusting water flow according to claim 1, characterized in that: The diameter of the water inlet hole (312) provided in the outer shell (31) is smaller than the diameter of the movable cavity (311), and an anti-fall-out shoulder is provided at the connection between the water inlet hole (312) and the movable cavity (311).

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