How to solve the problem of low suction of cutter suction dredger?

2021/04/13

Cutter suction dredger is one of the main construction equipment in waterway regulation, water conservancy dredging and river and lake regulation projects.

 

How to improve the comprehensive benefits of cutter suction dredger, generally speaking, the first thought is to improve the efficiency of mud pump, for many years, mud pump researchers have paid a lot of hard work. However, the mud pump is a kind of impurity pump, and the structural characteristics of its impeller, such as the equal width of the inlet and outlet blades, the small number of blades, usually 3-5 pieces, determine that the efficiency of the mud pump is the main goal, and its goal is to improve the suction concentration of the mud pump. Because in terms of comprehensive benefits, every 5% increase in the suction concentration of the mud pump will create more benefits than every 5% increase in the efficiency of the mud pump. At the same time, the difficulty of realizing the former is less than that of realizing the latter to a certain extent, because the efficiency of the mud pump is already higher.

 

In order to improve the suction concentration of mud and further improve the dredging efficiency, it is proposed to move the mud pump out of the silo and install it on the cutter rack, so as to make the mud pump as close to the suction port as possible, so that the underwater mud pump which is not restricted by the cavitation performance can obtain a larger suction concentration.