Multistage pump for punching stainless steel

This utility model relates to a stainless steel stamping multi-level pump, the bottom of the pump is an inlet and outlet segment body, the spindle of the pump is perpendicular to the ground and connects with the motor through a coupling, the spindle is arranged through the arched support and has multiple impellers arranged in uniformity thereon, a tangential flow guiding dome that can let liquid flow rotate 90 degrees therein is arranged between the outlet of the impellers and the inlet of the reverse guide blades, each level of the tangential flow guiding dome is welded on the top of the middle segment, and a tension strip is arrange between middle segments. The tangential flow guiding dome designed by this utility model can improve the fluidity of the liquid and improve the efficiency of the pump. The tension strip is arranged at the outside of the middle segment after the installation of the pump to lock up the sealing surface between middle segments, thus to prevent liquid reflux. This utility model designs four rubber pressing blocks to tightly press the middle segment of the last level to prevent the whole middle segment body from rotate. The pump uses assembly mechanic sealing which is easy to change and easy to install and improves the sealing performance.