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Centrifugal pump structure, performance and common fault solution

by:J&T     2020-06-19
Centrifugal pump is conveying liquid of commonly used equipment in industrial production, to what are the composition and performance of a centrifugal pump, the failure of the solution are know? Centrifugal pump structure composed of: impeller, pump body, pump cover, seal, pump shaft, bearing, seal ring, stuffing box, bearing box, motor, etc. Centrifugal pump is the use of a centrifugal impeller rotation and make the water has come to work. 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, water centrifugal motion, be left to the impeller outer edge and the volute pump shell of the water flow into the pump pressure. One, the structure of the centrifugal pump is introduced: 1, the pump body also calls the pump shell, it is the main body of the pump. Support fixed effect, and connected to install bearing bracket. 2, is the core part of a centrifugal pump impeller, its speed high output power. 3, sealing ring, also known as minus leakage ring. 4, the role of pump shaft is connected by coupling and motor, the torque of the motor to the impeller, so it is a major part of the mechanical energy transfer. 5, bearing box is in the process of centrifugal pump operation, motor operation through the pump shaft to drive the impeller rotation to complete delivery, have the effect of support connection and balance. Second, the centrifugal water pump failure solution: 1, small centrifugal pump discharge pressure, flow; with air, impeller and top plate gap, clutch closure is not tight, impeller or liner wear. Solution: gas inside the drain pump, adjust clearance, clearance, replacement of adjusting clutch friction impeller or lining. 2, the centrifugal pump wear fast construction environment ( Large particles) Poor and long conveying distance, suction culvert. Solution: replace the battlefield, add strength, shorten the length of inlet pipe to reduce cavitation. 3, quick wear of centrifugal pump impeller shaft neck, low dislocation, packing, high pressure water pump head pump shaft and the rear cover different heart. Solution: replace the higher than that of single-stage centrifugal pump high pressure pump, change the packing, adjust the concentricity. 4, centrifugal pump water slowly, liner and impeller clearance before big, can't full sealed air, emptying water pipes. Solution: adjust the clearance, adjust the water pipe, install vacuum device. 5, centrifugal pump vibration, pump shaft with the diesel engine ( Or motor) Different heart, impeller imbalance, bearing damage. Solution: adjust the concentricity, impeller balance test and replace the bearing. 6, centrifugal pump suction, pouring water diversion is not enough, the air in the pump can't eduction, suction pipe leakage, liner and impeller clearance before. Solution: to continue to infusion water diversion, check whether the pipe is air, adjust the impeller and the former plate gap.
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