After the pump seat is installed stably, the levelness of the three pump seats shall be carefully adjusted to make them on the same level. （3） Mechanical and electrical installation: first remove the mechanical and electrical coupling pins on the pump and install them to the mechanical and electrical shaft end. Water pump installation: install the water pump installed by the manufacturer on the pump base. Connect the water inlet pipe with the pump inlet flange, and place a rubber pad between the detailed flanges.
The research scheme and numerical model of the submersible axial-flow pump, CFD analysis applied in the hydraulic scheme of the submersible mixed flow pump can reduce the scheme cycle cost, and select a good hydraulic model through the simulation of flow pattern and data analysis. ）The more blades the submersible mixed flow pump has, the higher the flow rate and head when it reaches the scheme point, the higher the impeller outlet speed, the greater the hydraulic loss, and the lower the pressure. Eight hydraulic schemes are obtained according to the combination of two impellers and four guide vane schemes.