Axial flow pump of the various components and their role

Axial flow pump is mainly composed of suction pipe, impeller, guide vane, pump shaft, outlet pipe, bearing, packing box and blade angle adjusting mechanism. The role of the various parts are as follows: First, the suction pipe to improve the hydraulic conditions at the entrance, the general use of streamlined trumpet pipe or made of flow channels. Second, the impeller is the main work of axial-flow pump components, the medium is output by the rotation of the impeller, which consists of blades and wheels. The possibility of adjusting the impeller is divided into fixed, semi-modulated, full-style. Third, the guide vane it fixed on the pump casing does not move, its role is to turn the impeller in the upward rotation of the media into axial motion, generally 6 to 12 guide vanes. Fourth, the role of the pump shaft is used to transmit torque, in a large pump, the pump is usually made of hollow shaft, which installed to adjust the operation of the pump tube. Fifth, the outlet pipe from the diversion role, to determine the medium outlet flow. Sixth, bearing according to its function is divided into two kinds. One is the guide bearing, mainly used to bear the radial force, play a radial positioning, commonly used lubricating rubber bearings and oil-lubricated bearings; the other is the thrust bearing, mainly in the vertical axial flow pump, to withstand Axial thrust of the water flowing downward on the blade, the weight of the rotating parts of the pump, and the axial position of the rotor are maintained and these thrusts are transmitted to the foundation of the unit. Seven, packing box in the water outlet pipe shaft hole set at the seal. Eight, blade angle adjustment mechanism It is used in semi-adjustable and full-impeller, used to adjust the blade angle, so as to achieve the purpose of changing conditions.

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