泡沫比例混合器是向泡沫产生设备和喷射设备提供混合液的设备，它与泡沫消防车上的消防泵或固定式消防泵配套使用，向泡沫灭火器设备输送混合液。下面川消小编为您讲解下该产品的使用。

Foam proportioner is a device that provides mixed liquid to foam generating equipment and spraying equipment. It is used together with the fire pump or fixed fire pump on foam fire truck to deliver mixed liquid to foam extinguisher equipment. Now let's talk about the use of this product.

该比例混合器使用于低倍泡沫灭火系统，与消防泡沫炮、空气泡沫枪、空气泡产生器、空气泡沫钩管和液下喷射空气泡沫产生器等配用。泡沫液一般配用3%型和6%型的低倍数蛋白泡沫灭火剂。

This proportioner is used in the low magnification foam fire extinguishing system, and is matched with the fire foam monitor, air foam gun, air bubble generator, air foam hook pipe, and underwater jet air foam generator. Foam liquid is generally equipped with 3% and 6% low expansion protein foam extinguishing agent.

泡沫比例混合器安装在水泵上，与水泵相配用，根据配用泡沫喷射设备的泡沫混合液量的要求，按比例吸取泡沫液，并送水泵进水管中使之与水混合形成泡沫混合液的消防设备。

The foam proportioner is installed on the water pump and matched with the water pump. According to the requirements of the foam mixture volume of the foam spraying equipment, the foam liquid is drawn proportionally and sent to the fire fighting equipment of the water pump inlet pipe to mix it with water to form foam mixture.

1、混合器由调节手柄、指示牌、调节阀、混合室及扩散管等构成。

1. The mixer is composed of regulating handle, indicator, regulating valve, mixing chamber, diffusion tube, etc.

2、混合器指示牌上标有不同的流量指数，该指数与泡沫喷射设备的混合液量值对应。如：将调节手柄指向“4”数值时,混合器可满足额定流量为4L/s的喷射泡沫设备所需泡沫混合液的混合比，其余以此类推。混合器均适合配用6%泡沫液。

2. Different flow indexes are marked on the indicator board of the mixer, which correspond to the volume of mixed liquid of foam injection equipment. For example, when the regulating handle is pointed to the "4" value, the mixer can meet the mixing ratio of foam mixture required by the foam injection equipment with the rated flow of 4L/s, and so on. All mixers are suitable for 6% foam liquid.

3、混合器应安装在水泵附近,与水泵的进、出水管相连接。混合器出口压力要<0.03MPa,否则将影响混合器吸取泡沫液性能。

3. The mixer shall be installed near the water pump and connected with the water inlet and outlet pipes of the water pump. The outlet pressure of the mixer shall be less than 0.03MPa, otherwise the performance of the mixer to absorb foam liquid will be affected.

4、混合器进口压力在0.6—1.4MPa范围内,吸取泡沫液量在某一挡中基本不变。而产生和喷射泡沫设备在不同压力下其混合液发生变化时,其混合比将发生变化。因此要适当调整和控制产生和喷射泡沫设备的压力,使其压力不能太高或太低,以便保证混合比在6～7％。

4. The inlet pressure of the mixer is within the range of 0.6-1.4MPa, and the amount of foam liquid absorbed is basically unchanged at a certain gear. When the mixture of foam generating and spraying equipment changes under different pressures, the mixing ratio will change. Therefore, the pressure of foam generating and spraying equipment shall be properly adjusted and controlled to ensure that the pressure is not too high or too low, so as to ensure the mixing ratio is 6-7%.

5、混合器适用6%型低倍数蛋白泡沫灭火剂。

5. The mixer is suitable for 6% type low expansion protein foam extinguishing agent.

该比例混合器工作原理是：

The working principle of the proportioner is:

当水泵压力以很高的速度从喷嘴喷出进入混合室时，由于射流质点的横向紊动扩散作用，将泡沫液吸入管内的空气带走，管内形成真空，泡沫液被吸入。两股流体在扩散管前喉管内混合并进行能量交换，水流速度减小，被吸入液体的速度增加，在喉管出口处二者趋近一致，压力逐渐增加。混合液通过扩散管后，大部分动能转换为压力能，使压力进一步提高，后进入水泵再次在泵内充分混合并输出。

When the water pump pressure is ejected from the nozzle into the mixing chamber at a very high speed, the air in the foam liquid suction pipe is taken away due to the transverse turbulent diffusion of the jet particle, and a vacuum is formed in the pipe, and the foam liquid is sucked in. The two streams of fluid mix and exchange energy in the throat before the diffuser. The water flow velocity decreases, and the speed of the liquid sucked in increases. At the throat outlet, the two tend to be the same, and the pressure gradually increases. After the mixed liquid passes through the diffusion tube, most of the kinetic energy is converted into pressure energy to further increase the pressure, and then the inlet pump is fully mixed and output in the pump again.

此外应经常保持消防泡沫炮的完整和清洁，每使用过一次后应冲洗干净。同时应注意检查各联接件是否紧固，密封圈是否缺损，操纵杆和手动调节转动件是否灵活，以保证消防泡沫炮应急使用时性能可靠。更多相关内容就来我们网站http://www.cx-fire.com咨询了解吧！

In addition, keep the fire foam monitor complete and clean, and wash it after each use. At the same time, attention should be paid to checking whether the connecting pieces are fastened, whether the sealing ring is damaged, and whether the operating lever and the manually adjusted rotating parts are flexible to ensure the reliable performance of the fire foam monitor in emergency use. More relevant content will come to our website http://www.cx-fire.com Ask and understand!