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比例混合装置是各种泡沫灭火系统的重要组成部分,其作用是使泡沫灭火系统的水与泡沫液按规定的比例相混合,形成适宜于产生灭火泡沫的混合液。目前使用的比例混合装置主要有泡沫管枪自带的比例混合装置,管线式比例混合器,环泵式比例混合器,压差式比例混合装置和等压式比例混合装置等五种形式。前四种比例混合装置一般适用于较小型的泡沫灭火系统并在我国得到了广泛的应用。等压式比例混合装置适用于
Proportional mixing device is a variety of foam fire extinguishing system is an important part of its role is to foam fire extinguishing system water and foam liquid at a predetermined ratio of mixing to form a mixture suitable for generating fire fighting foam. The currently used proportional mixing device are mainly foam gun own ratio mixing device, pipeline ratio mixer, ring pump ratio mixer, pressure ratio ratio mixing device and isoportion ratio mixing device in five forms. The first four proportional mixing devices are generally suitable for smaller foam fire extinguishing systems and have been widely used in our country. Equal pressure ratio mixing device suitable for