General characteristics of centrifugal pumps

General characteristics of centrifugal pumps

(1) water along the centrifugal pump flow direction is along the axial suction impeller, perpendicular to the axial flow, namely the in and out of each other becomes 90 ° in the direction of flow.
(2) due to rely on imported form vacuum suction impeller centrifugal pump, so before starting to pump and suction tube perfusion in water, or use the vacuum pump suction, to form a vacuum exhaust air, and the pump shell and the suction pipe must be strictly seal, shall not leak, otherwise not form a vacuum, also can't absorb water.
(3) absolutely can't be formed due to the impeller import vacuum, so Shanghai pump suction height should not exceed 10 m, coupled with the flow of the suction piping to bring down the loss, actually allow installation height (pump axis is apart from the height of the suction surface) is far less than 10 meters.If the installation is too high, do not absorb water;In addition, because the mountain area is lower than the atmospheric pressure in the plain, the installation height of the same water pump in the mountainous area, especially in the high mountain area, should be lowered, otherwise it will not be able to absorb water.