Multi-stage centrifugal pump to resolve multiple reasons for running out of water

Pump pump news】 【multistage centrifugal pump suddenly not running water what is the reason? Let us from these eight places to find out why the multistage centrifugal pump running water problems. Multi-stage centrifugal pump to resolve multiple reasons for running water (1) cracks in the inlet pipe cracks, water pipes and pumps at the junction of a small gap, are likely to make the air into the water pipe. (2) Inlet pipe Due to long-term potential underwater, pipe wall corrosion holes, multi-stage centrifugal pump work continues to decline after the surface water, when these holes exposed water, the air from the hole into the water pipe. (3) The horizontal section of the inlet pipe in contact with the multistage centrifugal pump applies a descending gradient of 0.5 or more to the direction of the water flow, and the end connected to the pump inlet is the highest, not completely horizontal. If you tilt up, there will be trapped air inlet pipe, reducing the vacuum hose and pump, affecting water absorption. (4) The multi-stage centrifugal pump is not filled with enough water prior to start-up, and sometimes the seeped water has overflowed from the bleed hole, but the air is not completely discharged by the pump shaft, causing a little air to remain in the inlet pipe or the pump body. (5) centrifugal pump itself mechanical failure. Loosening of the impeller and the shaft of the pump shaft or the deformation and bending of the shaft of the pump cause the impeller to move more, friction directly with the pump body or damage to the bearing, all of which may reduce the speed of the pump. (6) Multi-stage centrifugal pump packings have worn or been loosely packed for a long period of time, resulting in a large amount of water being ejected from the gap between the packing and the shaft sleeve. As a result, external air flows into the pump from these gaps The internal, affecting the water. (7) Power engine maintenance is not working. Motor due to the winding burned, and lost magnetism, the maintenance of the winding turns, diameter, wiring changes, or maintenance failure is not completely ruled out the factors that will change the pump speed. (8) Human factors. Some users due to the original motor damage, it is coupled with another motor driven, the result of a small flow, low lift or even the consequences of the water. (Editor: Shuiyu) Extended reading: 2016 China (Shanghai) World Expo, the first enviroment! 2016 Beijing Petroleum Exhibition pump valve pipe fittings exhibition information 2016 exhibition information

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