Compressed air foam proportioner

Abstract

The invention relates to the technical field of foam mixers, in particular to a compressed air foam proportioner. The compressed air foam proportioner comprises a mixing drum device, a compressed air inlet device and a regulating device; the compressed air foam proportioner can obtain a better foaming effect; meanwhile, the proportion of the air in foam can be controlled by controlling and regulating the discharge amount of the compressed air with the regulating device; and optimal extinguishment effects are reached for different extinguishment situations.

Description

technical field [0001] The present application relates to the technical field of foam mixers, in particular to a compressed air foam proportional mixer. Background technique [0002] For the fire extinguishing operation based on the compressed air foam proportional mixing system, for different fire types and different time periods of the same fire type, the ratio of the mixed fire extinguishing medium compressed air, foam liquid and water required to achieve the best fire extinguishing effect is not the same. , the same proportion of mixed media has different fire extinguishing effects due to different foaming effects. [0003] In the prior art, adjusting the mixing ratio of compressed air, foam liquid and water is to vertically connect the compressed air pipe with manual ball valve on the main pressure pipe of pre-mixed foam liquid and water, and adjust the opening degree of the manual ball valve. Control the flow of compressed air to adjust the ratio of foam liquid water ...

AI Technical Summary

Problems solved by technology

[0005] 1. The mixing area of ​​the foam liquid-water mixture and the compressed air is too small to fully contact, the diameter of the formed foam is discrete and uneven, and the self-analysis time is short, resulting in unsatisfactory foaming effect;

[0006] 2. The mixing ratio is adjusted through the manual ball valve of the peripheral equipment, only the flow area of ​​the manual ball valve on the peripheral compressed air pipeline is adjusted, and the mixing area of ​​the foam liquid water mixture and the compressed air cannot be directly adjusted. When adjusting the ratio, a manual ball valve appears The air velocity of the compressed air at the rear decreases and the momentum decreases. When the foam liquid-water mixture is mixed with compressed air, the compressed air cannot fully collide with the foam liquid-water mixture due to the lack of momentum. resulting in unsatisfactory foaming effect

[0007] Due to the above deficiencies, the comprehensive fire extinguishing performance of the mixed medium is greatly reduced

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