Tunnel foam deluge valve group

Abstract

The utility model discloses a tunnel foam deluge valve group, relates to the field of fire fighting devices, and aims to solve the problems that in the prior art, a mixing and stirring device is arranged in an existing tunnel foam deluge valve, so that foam stock solution and fire fighting water are not uniformly mixed, and the fire extinguishing efficiency is influenced. A liquid discharging pipe is fixedly connected to the upper end of the mixer, a stirring shaft is rotatably connected to the middle of the interior of the mixer, a plurality of stirring rods are fixedly connected to the stirring shaft, a driving assembly is connected to the lower end of the mixer, a driving shaft is rotatably connected to the middle of the interior of the driving assembly, and a plurality of paddles are fixedly arranged on the driving shaft; the rear end of the driving assembly communicates with a fire-fighting water pipe, the fire-fighting water pipe is connected with the lower end of one side of the mixer through a U-shaped connecting pipe, and the lower end of the other end of the mixer is connected with a foam liquid pipeline.

Description

Technical Field

[0001] The utility model relates to the field of fire-fighting devices, in particular to a tunnel foam deluge valve group. Background Technique

[0002] A deluge valve is a control valve that can achieve automatic water supply by controlling the fire-fighting water supply pipeline. It can be opened electrically, hydraulically, pneumatically, and mechanically. The working principle and function of the deluge alarm valve are to control the fire-fighting water stored in the building's fire-fighting pipeline to flow unidirectionally towards the sprinkler heads for fire extinguishing according to the fire situation. It is a timely and efficient fire-fighting valve. Generally, the deluge alarm valve is designed with valve components such as a hydraulic alarm bell, a ball valve, a needle valve, and a pressure switch. The valve cavity of the deluge valve is divided into three parts: the upper cavity, the lower cavity, and the control cavity. The control cavity is connected to the water supply pipeline, and an orifice plate for restricting the flow and transmitting pressure is provided in the middle. The pressure water in the water supply pipeline pushes the diaphragm in the control cavity, and then pushes the drive rod to tightly press the valve flap locking rod. The locking rod generates a moment to lock the valve plate on the valve seat. The valve flap prevents the pressure water in the lower cavity from entering the upper cavity. During a fire, due to the pressure relief in the control cavity, the moment exerted by the drive rod on the valve flap locking rod is lower than the moment exerted by the water supply pressure on the valve flap, so the valve flap opens and the water supply enters the distribution pipeline.

[0003] For example, the authorized announcement number is CN 217489627 U, a tunnel foam spray control valve group, which includes a first butterfly valve, a deluge alarm valve, a proportioning mixer, and a second butterfly valve that are sequentially connected in the water flow direction and installed in a box. It also includes a start control component for opening the deluge alarm valve, a debugging and maintaining component for providing the closing water pressure of the deluge alarm valve, and a foam concentrate supply component for supplying foam concentrate to the proportioning mixer. The start control component includes a solenoid valve connected to the control cavity of the deluge alarm valve and an anti-reset valve bypassed on the pipeline between the solenoid valve and the control cavity. The debugging and maintaining component includes a first pipeline that provides water pressure to the control cavity to close the deluge alarm valve and the anti-reset valve initially, and a second pipeline that provides water pressure to the control cavity to keep the deluge alarm valve and the anti-reset valve continuously closed.

[0004] The tunnel foam deluge valve group mixes the fire-fighting water with the foam concentrate in the foam concentrate pipeline and then transports it through the official website to the special foam sprinkler heads to extinguish the tunnel fire. There is no mixing and stirring device in the existing tunnel foam deluge valves, resulting in uneven mixing of the foam concentrate and the fire-fighting water, which affects the fire extinguishing efficiency. Therefore, there is an urgent need in the market to develop a tunnel foam deluge valve group to help people solve the existing problems. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a tunnel foam deluge valve group to solve the problem that in the tunnel foam deluge valve group in the above-mentioned background technology, the foam stock solution of the fire water and foam liquid pipelines is mixed and then conveyed through the official website to the special foam nozzles to extinguish tunnel fires. There is no mixing and stirring device in the existing tunnel foam deluge valves, resulting in uneven mixing of the foam stock solution and fire water and affecting the fire extinguishing efficiency.

[0006] To achieve the above purpose, the present utility model provides the following technical solution: A tunnel foam deluge valve group includes a mixer. A drain pipe is fixedly connected to the upper end of the mixer. A stirring shaft is rotatably connected to the middle of the interior of the mixer. A plurality of stirring rods are fixedly connected to the stirring shaft. A driving assembly is connected to the lower end of the mixer. A driving shaft is rotatably connected to the middle of the interior of the driving assembly. A plurality of blades are fixedly arranged on the driving shaft. The rear end of the driving assembly is connected to a fire water pipe. The fire water pipe and the lower end of one side of the mixer are connected through a U-shaped connecting pipe. The other end of the lower end of the mixer is connected to a foam liquid pipeline.

[0007] Preferably, a limiting pipe is connected to the upper end of the stirring shaft in a limiting manner. The limiting pipe is fixedly connected to the inner end face of the mixer through a plurality of fixing rods.

[0008] Preferably, a transmission cover is fixedly arranged in the middle of the lower end face of the mixer. The lower end of the stirring shaft extends into the transmission cover and is fixedly provided with a transmission part. A circular groove is arranged in the middle of the transmission part, and a rectangular limiting part is fixedly arranged in the middle of the circular groove.

[0009] Preferably, a first connecting pipe is fixedly connected to the middle of the lower end face of the mixer. A first flange is fixedly connected to the lower end of the first connecting pipe. A second connecting pipe is fixedly connected to the middle of the upper end face of the driving assembly. A second flange is fixedly connected to the upper end of the second connecting pipe.

[0010] Preferably, the mixer and the driving assembly are fixedly connected by bolts through the first flange and the second flange.

[0011] Preferably, a rectangular limiting groove is arranged on the upper end face of the driving shaft. The upper end of the driving shaft sequentially passes through the second connecting pipe and the first connecting pipe and then extends into the transmission cover and is inserted into the circular groove inside the transmission part, and the rectangular limiting part is inserted into the rectangular limiting groove.

[0012] Preferably, control valves are arranged on the drain pipe, the fire water pipe, the U-shaped connecting pipe and the foam liquid pipeline.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. In this utility model, through the setting of the driving assembly, the lower end of the mixer is connected to the driving assembly. In the middle of the driving assembly, a driving shaft is rotatably connected. A plurality of blades are fixedly arranged on the driving shaft. The rear end of the driving assembly is connected to a fire hose. The upper end of the driving shaft sequentially passes through the second connecting pipe and the first connecting pipe and then extends into the transmission cover and is inserted into the circular groove on the transmission part, and the rectangular limiting part is inserted into the rectangular limiting groove, so that when the driving shaft rotates, it drives the stirring shaft to rotate. When the fire water passes through the fire hose, it pushes the blades (the blades extend into the fire hose) inside the driving assembly connected to the front end of the fire hose, so that the plurality of blades push the driving shaft to rotate. The rotation of the driving shaft drives the stirring shaft to rotate, and then drives the stirring rod to stir the fire water and foam concentrate inside the mixer evenly, realizing the operation of the mixer driven by the water supply pressure of the fire water.

[0015] 2. In this utility model, through the setting of the transmission part, the lower end of the stirring shaft extends into the transmission cover and is fixedly provided with the transmission part. A rectangular limiting groove is arranged on the upper end surface of the driving shaft. The upper end of the driving shaft sequentially passes through the second connecting pipe and the first connecting pipe and then extends into the transmission cover and is inserted into the circular groove on the transmission part, and the rectangular limiting part is inserted into the rectangular limiting groove, so that when the driving shaft rotates, it drives the stirring shaft to rotate, and at the same time, the driving shaft can be disengaged downward from the inside of the mixer, facilitating the disassembly between the mixer and the driving assembly.

[0016] 3. In this utility model, through the setting of the first flange and the second flange, the middle part of the lower end surface of the mixer is fixedly connected with the first connecting pipe, the lower end of the first connecting pipe is fixedly connected with the first flange, the middle part of the upper end surface of the driving assembly is fixedly connected with the second connecting pipe, and the upper end of the second connecting pipe is fixedly connected with the second flange. The mixer and the driving assembly are fixedly connected by bolts through the first flange and the second flange, so that the mixer and the driving assembly can be disassembled, facilitating the maintenance of each component. Description of the Drawings

[0017] Figure 1 It is the front view of a tunnel foam deluge valve group of the present utility model;

[0018] Figure 2 It is the side view of the present utility model;

[0019] Figure 3 It is the main sectional view of the present utility model;

[0020] Figure 4 It is the side sectional view of the present utility model;

[0021] Figure 5 It is the enlarged detail view A of the present utility model.

[0022] In the figure: 1. Mixer; 101. Drain pipe; 102. Transmission cover; 2. Stirring shaft; 201. Stirring rod; 103. First connecting pipe; 104. First flange; 202. Transmission part; 203. Rectangular limiting part; 3. Limiting pipe; 301. Fixed rod; 4. Driving assembly; 401. Second connecting pipe; 402. Second flange; 5. Driving shaft; 501. Blade; 502. Rectangular limiting groove; 6. Fire hose; 601. U-shaped connecting pipe; 7. Foam liquid pipeline. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] Please refer to Figures 1-5 , an embodiment provided by the present invention: A tunnel foam deluge valve group includes a mixer 1. A drain pipe 101 is fixedly connected to the upper end of the mixer 1. The middle part inside the mixer 1 is rotatably connected to a stirring shaft 2. A plurality of stirring rods 201 are fixedly connected to the stirring shaft 2. A driving assembly 4 is connected to the lower end of the mixer 1. The middle part inside the driving assembly 4 is rotatably connected to a driving shaft 5. A plurality of blades 501 are fixedly arranged on the driving shaft 5. The rear end of the driving assembly 4 is communicated with a fire hose 6. The fire hose 6 and the lower end of one side of the mixer 1 are connected through a U-shaped connecting pipe 601. The other end of the lower end of the mixer 1 is connected to a foam liquid pipeline 7.

[0025] Furthermore, a limiting pipe 3 is connected to the upper end of the stirring shaft 2 in a limiting manner. The limiting pipe 3 is fixedly connected to the inner end face of the mixer 1 through a plurality of fixed rods 301. When the stirring shaft 2 rotates, the upper end of the stirring shaft 2 is kept stable through the limiting pipe 3.

[0026] Furthermore, a transmission cover 102 is fixedly arranged in the middle of the lower end face inside the mixer 1. The lower end of the stirring shaft 2 extends into the transmission cover 102 and is fixedly provided with a transmission part 202. A circular groove is arranged in the middle of the transmission part 202, and a rectangular limiting part 203 is fixedly arranged in the middle of the circular groove.

[0027] Furthermore, a first connecting pipe 103 is fixedly connected to the middle of the lower end face of the mixer 1. A first flange 104 is fixedly connected to the lower end of the first connecting pipe 103. A second connecting pipe 401 is fixedly connected to the middle of the upper end face of the driving assembly 4. A second flange 402 is fixedly connected to the upper end of the second connecting pipe 401.

[0028] Furthermore, the mixer 1 and the driving assembly 4 are fixedly connected by bolts through the first flange 104 and the second flange 402, so that the mixer 1 and the driving assembly 4 can be disassembled, which is convenient for the maintenance of each component.

[0029] Furthermore, a rectangular limiting groove 502 is provided on the upper end surface of the drive shaft 5. The upper end of the drive shaft 5 sequentially passes through the second connecting pipe 401 and the first connecting pipe 103 and then extends into the transmission cover 102 and is inserted into the circular groove inside the transmission member 202. And the rectangular limiting portion 203 is inserted into the rectangular limiting groove 502, so that when the drive shaft 5 rotates, it drives the stirring shaft 2 to rotate. At the same time, the drive shaft 5 can be pulled out downward from the inside of the mixer 1, which is convenient for the disassembly between the mixer 1 and the drive assembly 4. When the fire water passes through the fire water pipe 6, it pushes the impellers 501 (the impellers 501 extend into the fire water pipe 6) inside the drive assembly 4 connected to the front end of the fire water pipe 6, so that the multiple impellers 501 push the drive shaft 5 to rotate. By the rotation of the drive shaft 5, the stirring shaft 2 is driven to rotate, and then the stirring rod 201 drives the fire water and the foam concentrate inside the mixer 1 to be stirred evenly.

[0030] Furthermore, control valves are provided on the drain pipe 101, the fire water pipe 6, the U-shaped connecting pipe 601 and the foam liquid pipeline 7.

[0031] Working principle: When in use, fire water is injected into the mixer 1 through the fire water pipe 6 and the U-shaped connecting pipe 601, and foam concentrate is injected into the mixer 1 through the foam liquid pipeline 7. When the fire water passes through the fire water pipe 6, it pushes the impellers 501 (the impellers 501 extend into the fire water pipe 6) inside the drive assembly 4 connected to the front end of the fire water pipe 6, so that the multiple impellers 501 push the drive shaft 5 to rotate. By the rotation of the drive shaft 5, the stirring shaft 2 is driven to rotate, and then the stirring rod 201 drives the fire water and the foam concentrate inside the mixer 1 to be stirred evenly. Due to the water pressure injected into the mixer 1 through the fire water pipe 6 and the foam liquid pipeline 7, the mixed foam fire water inside the mixer 1 is discharged from the drain pipe 101.

[0032] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A tunnel foam deluge valve set, including a mixer (1), characterized in that: A drain pipe (101) is fixedly connected to the upper end of the mixer (1). A stirring shaft (2) is rotatably connected to the middle part inside the mixer (1). A plurality of stirring rods (201) are fixedly connected to the stirring shaft (2). A driving assembly (4) is connected to the lower end of the mixer (1). A driving shaft (5) is rotatably connected to the middle part inside the driving assembly (4). A plurality of blades (501) are fixedly arranged on the driving shaft (5). A fire hose (6) is connected to the rear end of the driving assembly (4). The fire hose (6) is connected to the lower side of one side of the mixer (1) through a U-shaped connecting pipe (601). A foam liquid pipeline (7) is connected to the lower end of the other end of the mixer (1).

2. The deluge valve group for tunnel foam according to claim 1, characterized in that: A limiting pipe (3) is connected to the upper end of the stirring shaft (2) in a limiting manner. The limiting pipe (3) is fixedly connected to the inner end face of the mixer (1) through a plurality of fixing rods (301).

3. The deluge valve group for tunnel foam according to claim 1, wherein: A transmission cover (102) is fixedly arranged in the middle of the lower end face inside the mixer (1). The lower end of the stirring shaft (2) extends into the transmission cover (102) and is fixedly provided with a transmission part (202). A circular groove is arranged in the middle of the transmission part (202), and a rectangular limiting part (203) is fixedly arranged in the middle of the circular groove inside.

4. The tunnel foam deluge valve set according to claim 3, characterized in that: A first connecting pipe (103) is fixedly connected to the middle of the lower end face of the mixer (1). A first flange (104) is fixedly connected to the lower end of the first connecting pipe (103). A second connecting pipe (401) is fixedly connected to the middle of the upper end face of the driving assembly (4). A second flange (402) is fixedly connected to the upper end of the second connecting pipe (401).

5. The deluge valve group for tunnel foam according to claim 4, characterized in that: The mixer (1) and the driving assembly (4) are fixedly connected by bolts through the first flange (104) and the second flange (402).

6. The deluge valve group for tunnel foam according to claim 5, wherein: A rectangular limiting groove (502) is arranged on the upper end face of the driving shaft (5). The upper end of the driving shaft (5) sequentially passes through the second connecting pipe (401) and the first connecting pipe (103) and then extends into the transmission cover (102) and is inserted into the circular groove inside the transmission part (202), and the rectangular limiting part (203) is inserted into the rectangular limiting groove (502) inside.

7. A tunnel foam deluge valve group according to claim 1, characterized in that: Control valves are arranged on the drain pipe (101), the fire hose (6), the U-shaped connecting pipe (601) and the foam liquid pipeline (7).

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