Centrifugal pumps belonging to the vane pump in a class, its structure mainly by the impeller, pump body, pump shaft, bearings, seal ring, packing box, the following small series for centrifugal pumps in these parts, it The structure is explained. Centrifugal pump structure Description 1, the impeller is the core part of the centrifugal pump, it is higher than the speed of large impeller blades play a major role in impeller before the assembly through the static balance experiment. The inner and outer surfaces of the impeller require smoothness to reduce frictional loss of water flow. 2, also known as the pump casing, it is the main pump. To support the role of fixed, and with the bearing bracket to connect. 3, the role of the pump shaft is connected to the motor by a coupling, the motor torque to the impeller, so it is the main component of mechanical energy transmission. 4, the bearing is set in the pump shaft supporting the pump shaft components, there are two types of rotating bearings and plain bearings. Rotating bearings using butter as a lubricant to the appropriate general volume of 2 / 3-3 / 4 Too much heat will be too little and there is sound and heat! Sliding bearing is the use of a transparent oil as a lubricant, refueling to Oil level line. Too much oil to bleed along the pump shaft and exaggerated, too little bearing but also overheat burned accident! During the pump running bearing temperature up to 85 degrees generally run at 60 degrees, if high, we must find the reason (Whether impurities, whether the black oil, whether water) and timely treatment! 5, seal ring, also known as leakage ring. The gap between the impeller inlet and the pump casing is too large, causing the water in the high-pressure area of ​​the pump to flow to the low-pressure area through this gap, affecting the output of the pump and reducing the efficiency. If the clearance is too small, friction between the impeller and the pump casing will cause abrasion. In order to increase the backflow resistance to reduce the internal leakage, delay the service life of the impeller and the pump housing, the inner edge of the pump housing and the impeller is provided with a sealing ring, and the gap between the seals is maintained between 0.25-1.10 mm. 6, packing box mainly by packing, water seal ring, packing tube, packing gland, water seal tube. The purpose of the packing box is mainly to close the gap between the pump housing and the pump shaft so that the water inside the pump does not flow to the outside and the outside air does not enter the pump. Always keep the vacuum inside the pump! When the pump shaft and filler friction generate heat will depend on the water seal to live in the water seal to make the packing cool! Keep the normal operation of the pump. Therefore, the pump during the inspection tour of the packing box is to pay special attention to! In the operation of 600 hours or so will be on the packing replacement. Further reading: China Construction Water Exhibition Pump Valve Tube Fittings Exhibition Water Expo Xiamen Maritime Exhibition Industrial Internet (Xiamen) Technology Co., Ltd. Asia Pump Network Editor: He Daohui (QQ / WeChat:) http: //mj.liuti .cn / (Service Hotline:)
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