What is a centrifugal pump?

Centrifugal pump is the centripetal force on the impeller rotates to walks liquid pump. Centrifugal pump is the impeller rotating centrifugal motion to work and make the water attack. Pump before the start, it is necessary to make the pump casing and suction tube filled with water, and then start the motor, make and water pump shaft to drive the impeller for high speed rotation, eccentric exercise, water attack is flung to the impeller outer edge and the volute pump shell of the water flow into the pump pressure. The fundamental structure of centrifugal pump is composed of eight local, respectively is: impeller, pump body, pump cover, hydrosphere, pump shaft, bearing, seal ring, stuffing box, axial force balancing installation. 1, is the center of the centrifugal pump impeller is local, it is high speed output power. 2, the pump body also calls the pump shell, it is the body of the pump. Support fixed effect, and with gear bearing bracket. 3, the role of pump shaft by cohesion and coupling and motor phase to the torque of the motor to the impeller, so it is a major part of the mechanical energy transmitted 4, sealing ring, also known as minus leakage ring. 5, stuffing box is mainly composed of packing, don't let the flow within the pump outside also not let outside air into the pump. Always adhere to the water pump in the vacuum! When the pump shaft and be about to rely on water seal packing friction heat pipe water injection to the water seal circle packing cooling! 6, installation, axial force equilibrium in the process of centrifugal pump operation, because the liquid is in low pressure into the impeller, and under the high pressure flow, make the pressure on the impeller on both sides of the range, the pointing in the direction the entrance of the axial thrust, will make up the onset of rotor axial channeling, wear and vibration of the axial thrust bearing, and therefore should be set so that the equilibrium of axial force. One, according to the classification number 1, single pump impeller, namely on the pump shaft as long as an impeller. 2, multi-stage pump, namely on the pump shaft, there are two or more than two impeller at this time of the pump total head is the sum of n of impeller head. Second, according to the impeller suction way classification 1, unilateral feed water pump: also called single suction pump, the impeller on only one inlet; 2, feed water pump on both sides: also called double suction pump, the impeller has an inlet on both sides. Its flow rate than single suction pump twice, to approximate as two single suction pump impeller after back-to-back on together. Three, according to the pump shaft position to classification 1, horizontal pump: pump shaft in position. 2, vertical pump: the pump shaft is located in the vertical position of four, according to the impeller out of the way classification: 1, the volute pump water out of the impeller, pump shell directly into a spiral shape. 2, guide vane pump: water out of the impeller, into its set of guide vane outside, after enter the next level or into the outlet pipe. Next let's share of the centrifugal pump start-up, operation, care and centrifugal pump of the main application object.