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Flood comes form vortex sometimes because of the loss of the manhole cover, the flood is very terrible, add water, the water of life is very dangerous, so designed a separable float half part can be well block, block, so that it can make people to avoid the danger of intake swirl.
Jiangxi University of Finance and E
Jiangxi Nan Chang, China
Jiangxi University of Finance and Economics
Fujian University of Technology