In accordance with the character of the mine pumping system design and equipment selection, this poper provides a kind of principle of determinating suction piping, and also demonstrates a new kind of method of determinating more perfect suction piping.

Experimental research on flow field with PIV measurements around the intake arranged in cascade suction pipes;

Aim at 5 inner recirculation self-priming centrifugal pumps that specific speed are 74~112,adopt 3 different inner-diameter suction pipes and 6 kinds of separation tongue gap,a more overall experimental study on self-priming time under rule height and the max vacuum that can be attained was carry on.

Combined with the modeling test on choosing suction type for a pumping station of the second stage of Shanghai combined sewage project, the authors analyze and compare three kinds of suction types which are suction pipe, elbow type suction tube and bell type suction tube, an.

A technical modification of fabric-reinforced water suction hose was made.