CN221243834U

CN221243834U - Foam proportion mixer for fire hose

Info

Publication number: CN221243834U
Application number: CN202322968576.4U
Authority: CN
Inventors: 黄学正; 李鹏程
Original assignee: Xinshao County Fire Rescue Brigade
Current assignee: Xinshao County Fire Rescue Brigade
Priority date: 2023-11-03
Filing date: 2023-11-03
Publication date: 2024-07-02
Anticipated expiration: 2033-11-03

Abstract

The utility model provides a foam proportion mixer for a fire hose, which comprises a water inlet pipe (1), a water outlet pipe (2) and a foam extinguishing agent suction pipe (3); the foam extinguishing agent suction pipe (3) comprises a mixing cavity (301) and a liquid inlet pipe (302), and the water inlet pipe (1) and the water outlet pipe (2) are fixed on the mixing cavity (301) through threads; the method is characterized in that: the water inlet pipe (1) is provided with a water inlet pipe (8), and also comprises a nozzle (8) and a diversion trench (9) arranged on the inner wall of the nozzle (8); the vortex-shaped diversion trenches are arranged on the nozzles, so that fire water can spirally enter the mixing cavity, and the foam extinguishing agent and the fire water are uniformly mixed; the turbulent flow spring is arranged in the mixing cavity, so that the spiral fire-fighting water can generate certain turbulence when passing through the turbulent flow spring, the fire-fighting water and the foam fire extinguishing agent can be further mixed when being disturbed, and the spiral fire-fighting water can still be sprayed out in a spiral mode under the pushing of the subsequent fire-fighting water.

Description

Foam proportion mixer for fire hose

Technical Field

The utility model relates to the field of fire-fighting equipment, in particular to a foam proportion mixer for a fire-fighting water belt.

Background

When a fire disaster happens, fire fighting water in a fire truck or a fire hydrant can be only adopted to extinguish the fire disaster in most cases, a water hose needs to be paved at the moment, the water storage capacity of the fire truck is limited, a certain proportion of foam extinguishing agent is added into the fire fighting water, the foam extinguishing agent is sprayed out by a foam spray gun or a foam water generator of a connecting pipe, the same effect can be achieved by less water, along with the development of a foam extinguishing technology, a foam proportion mixer is used as a key part of a fire extinguishing system, the foam proportion mixer is common equipment in the field of fire extinguishing equipment, and the operation performance of the foam proportion mixer is directly related to the success or failure of the foam extinguishing system to extinguish the fire disaster.

Chinese patent CN208372332U provides a proportional mixer for fire-fighting foam station, which is suitable for 40 mm hose (hereinafter referred to as 40 hose), and forms a negative pressure cavity with the shell after being butted with the nozzle through venturi tube, and sucks and mixes the foam liquid and then sprays it; however, in the use of the patent, foam liquid is directly output after being sucked by negative pressure, and the foam liquid and fire fighting water cannot be completely mixed, so that the foam water gun in front cannot normally generate foam, and precious fire fighting time is delayed.

Therefore, aiming at the existing defects, a novel foam proportion mixer for the fire hose is developed, and the problem that foam liquid and fire hose cannot be fully mixed in use is effectively solved.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art, and aims to provide a foam proportion mixer for a fire hose, which effectively solves the problem that foam liquid and fire hose cannot be fully mixed in use.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model discloses a foam proportion mixer for a fire hose, which comprises a water inlet pipe, a water outlet pipe and a foam extinguishing agent suction pipe; the foam extinguishing agent suction pipe comprises a mixing cavity and a liquid inlet pipe, and the water inlet pipe and the water outlet pipe are fixed on the mixing cavity through threads; the water inlet pipe is provided with a water inlet pipe, and the water inlet pipe is provided with a water inlet pipe.

Further, the liquid inlet pipe is further provided with a one-way valve and a mixing regulating switch, the one-way valve is arranged in the liquid inlet pipe, and the mixing regulating switch is arranged on the liquid inlet pipe below the one-way valve through threads.

Furthermore, one end of the water inlet pipe and one end of the water outlet pipe are also provided with sealing joints which are installed through threads.

Further, the diversion trenches are arranged in a vortex shape.

Further, the position of the tail end of the nozzle exceeds the position of the liquid inlet pipe in the mixing cavity.

Furthermore, the parts are made of high-pressure-resistant corrosion-resistant stainless steel.

Compared with the prior art, the utility model has the advantages and positive effects that:

1. the vortex-shaped diversion trenches are arranged on the nozzle, so that fire water can spirally enter the mixing cavity, and the foam extinguishing agent and the fire water are uniformly mixed.

2. The turbulent flow spring is arranged in the mixing cavity, so that the spiral fire-fighting water can generate certain turbulence when passing through the turbulent flow spring, the fire-fighting water and the foam fire extinguishing agent can be further mixed when being disturbed, and the spiral fire-fighting water can still be sprayed out in a spiral mode under the pushing of the subsequent fire-fighting water.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present utility model;

FIG. 2 is a side view of embodiment 1 of the present utility model;

FIG. 3 is a cross-sectional view taken along the dotted line of embodiment 1 of the present utility model;

FIG. 4 is a schematic view of the structure of the water inlet pipe of the present utility model;

Fig. 5 is a side view of the inlet tube of the present utility model.

Legend description:

1. A water inlet pipe; 2. a water outlet pipe; 3. a foam extinguishing agent suction pipe; 301. a mixing chamber; 302 liquid inlet pipe; 4. a one-way valve; 5. a hybrid regulating switch; 6. a turbulence spring; 7. sealing the joint; 8. a nozzle; 9. and a diversion trench.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

Referring to fig. 1, the present utility model provides a technical solution:

as shown in fig. 1:

The utility model provides a fire hose is with foam proportion blender, includes inlet tube 1, outlet pipe 2, foam fire extinguishing agent suction tube 3, mixing chamber 301, feed liquor pipe 302, check valve 4, mix switch 5, nozzle 8, foam fire extinguishing agent suction tube 3 includes mixing chamber 301 and feed liquor pipe 302, and feed liquor pipe 302 sets up in nearly mixing chamber 301 extreme point one side perpendicularly, and mixing chamber 301 both ends are equipped with the internal thread, and nearly feed liquor pipe 302 one side is installed water inlet 1 through the screw thread, and the delivery port 2 is installed through the screw thread to the other end, is equipped with check valve 4 in the feed liquor pipe 302, and mix switch 5 is installed to feed liquor pipe 302 bottom, still be equipped with nozzle 8 on the water inlet 2.

Fire-fighting water enters through the water inlet pipe 1, high flow speed is generated at the nozzle 8 due to the reduction of the diameter of the pipeline, negative pressure is generated in the mixing cavity 301, foam extinguishing agent is sucked into the mixing cavity 301, after mixing is completed, the foam extinguishing agent is sprayed out of the water outlet pipe 2, the one-way valve 4 is used for preventing the foam extinguishing agent from flowing back, and the mixing regulating switch 5 is used for regulating the proportion of the foam extinguishing agent entering the mixing cavity 301.

In this embodiment, it should be noted that, the nozzle 8 is provided with the diversion trench 9, the diversion trench 9 is in a vortex shape, and the fire-fighting water is in a spiral shape after entering, so that the fire-fighting water and the foam extinguishing agent are uniformly mixed in the mixing cavity 301, and the foam can be effectively generated after entering the foam water gun.

The mixing cavity 301 is internally provided with the turbulence spring 6, the diameter of the turbulence spring 6 is larger than that of the largest part of the nozzle 8, the fire-fighting water is spiral after passing through the diversion trench 9, and the turbulence spring 6 is added, so that the water flow in the mixing cavity 301 is partially close to the water flow of the turbulence spring 6 when rotating, but the water flow can still be spiral under the pushing of the subsequent water flow, and the fire-fighting water and the foam extinguishing agent can be further uniformly mixed when generating turbulence.

The outer ends of the water inlet pipe 1 and the water outlet pipe 2 are also provided with external threads for installing a sealing joint 7, and the foam proportion mixer can be quickly connected with a fire hose and a fire truck in the fire extinguishing process, so that precious fire fighting time is saved.

The end position of the nozzle 8 exceeds the position of the liquid inlet pipe 302 in the mixing cavity 301, and the water outlet amount is larger than the water inlet amount, so that negative pressure can be generated in the mixing cavity 301 under the action of fire water, and foam extinguishing agent is sucked.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. The foam proportion mixer for the fire hose comprises a water inlet pipe (1), a water outlet pipe (2) and a foam extinguishing agent suction pipe (3); the foam extinguishing agent suction pipe (3) comprises a mixing cavity (301) and a liquid inlet pipe (302), and the water inlet pipe (1) and the water outlet pipe (2) are fixed on the mixing cavity (301) through threads; the method is characterized in that: the water inlet pipe (1) is characterized by further comprising a nozzle (8) and a diversion trench (9) arranged on the inner wall of the nozzle (8), wherein the nozzle (8) is arranged on the water inlet pipe (1).

2. The fire hose foam proportioning mixer of claim 1, wherein: the liquid inlet pipe (302) is further provided with a one-way valve (4) and a mixing regulating switch (5), the one-way valve (4) is arranged in the liquid inlet pipe (302), and the mixing regulating switch (5) is arranged on the liquid inlet pipe (302) below the one-way valve (4) through threads.

3. The fire hose foam proportioning mixer of claim 1, wherein: one end of the water inlet pipe (1) and one end of the water outlet pipe (2) are also provided with sealing joints (7) which are installed through threads.

4. The fire hose foam proportioning mixer of claim 1, wherein: the diversion trenches (9) are arranged in a vortex shape.

5. The fire hose foam proportioning mixer of claim 1, wherein: the end position of the nozzle (8) exceeds the position of the liquid inlet pipe (302) in the mixing cavity (301).

6. The foam proportioning mixer for fire hose according to any one of claims 1 to 5, wherein: the parts are made of high-pressure-resistant corrosion-resistant stainless steel.