Alternation type foam storing and proportion mixer

Abstract

The invention relates to an alternating foam storing and proportioning device for foam extinguishing system, comprising at least a foam storing container with normal pressure, at least two pressuring foaming tanks, at least a proportioning implement and control unit so on. The invention adopts at least a foam storing container to injecting foam to at least two pressuring foam tanks alternatively. Foam liquid in at least two pressuring foam tanks is outputted to the foam extinguishing system through at least a proportioning implement alternatively and continuously. The invention is provided with more accurate mixing foam liquid, simple device structure and uneasy break of rubber diaphragm. The key equipment, pressuring foam tank, in the invention can be produced in standardization. Its producing period is short and its cost is decreased greatly.

Description

technical field [0001] The present invention relates to a foam storage and proportional mixing device for a foam fire extinguishing system, and more particularly, to an alternate foam storage and proportional mixing device which utilizes at least one atmospheric pressure foam storage container to sequentially feed at least two pressure type The foam tanks are alternately injected with foam liquid, and the foam liquid in at least two pressure foam tanks is alternately and continuously passed through at least one proportional mixer to output foam mixed liquid to the foam fire extinguishing system. The device can be produced in a standardized manner, and not only the foam liquid is mixed more accurately; but also the device has a simple structure, the rubber diaphragm is not easy to break, and the production cycle is short. Background technique [0002] There are two types of foam storage and proportional mixing devices that are widely used in the market: pressure foam storage ...

AI Technical Summary

Problems solved by technology

Its disadvantages: the foam storage tank adopts a pressure type foam tank, which belongs to a pressure vessel, and its design and production cycle is usually long, and the foam tank is generally made of a rubber diaphragm. more likely

But its disadvantage is that the accuracy of parameter measurement and control is not easy to grasp, that is, it is relatively difficult, and sophisticated equipment is required, resulting in high cost

[0005] The above two types of foam storage and proportional mixing devices have their own advantages and disadvantages. In order to overcome the shortcomings of the foam storage tank of the flexible rubber diaphragm pressure foam storage and proportional mixing device, the design and production period is long, the rubber diaphragm is easy to be crushed, and the balance pressure adjustment foam Although the foam liquid storage tank of the storage and proportional mixing device is an atmospheric tank, the accuracy of measurement and control is not easy to grasp, and the cost is high. The present invention provides an alternate foam tank and proportional mixing device

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