First,the working principle of the pump:the centrifugal pump can send water out beacause of the role of centrifugal force.Before the pump works,the pump body and the water inlet pipe must be filled with water into a vacuum state,when the impeller rotates rapidly,the blade promotes the water flies away from the impeller under the action of centrifugal force,the water in the pump is thrown out,and the central part of the impeller forms a vacuum area.The water in Suwon is pressed into the inbt pipe throught the pipe network under the action of atmospheric pressure (or water pressure).In this way,continous pumping can be achieved.The water quickly rotates,and the rotating water flies away from the impeller under the action of centrifual force.After the water in the pump is thrown out,the central part of the impeller forms a vacuun area.
The classification of pumps:There are three types vane pump:centrifugal pump,axial flow pump mixed flow pump.Sencondly, positive displacement pump is divided into reciprocating pump (piston pump,plunger pump,diaphragm pump)anad rotary pump(gear pump screw pump,sliding vane pump).The last is other type,such as screw pump .let pump water hammer pump ,vacuum pump,Also,by pressure ,it can divided into low pressure pump(less than 2Mpa).Medium pressure pump(2-6mpa),high pressure pump(above 6Mpa)
