Development of the great-flow control valve used for the vacuumpumping water system with multistage centrifugal pumps

In view of the questions which exist in mine automatic drainage systems,this paper proposes the design of the vacuum-pumping control valves,which are used for mine automatic drainage systems with multistage centrifugal pumps,designs their parts including electric actuators,control circuits and shells,and confirms the vacuum-pumping control valve can satisfy the demands of the vacuum-pumping water system by experiments.