Water guide device for vertical suspended semi submersible vertical turbine pump

The water guiding device of a vertical suspended semi submersible vertical turbine pump is equipped with a pump body and an impeller. Its characteristic is that the center of the suction section of the pump body is equipped with a water guiding device, which includes a large water guiding cone sleeve and a small water guiding cone sleeve. The large water guiding cone sleeve is trumpet shaped, gradually concave in an arc shape from the large diameter end along the axial direction to the small diameter end. The small water guiding cone sleeve is cylindrical, and the lower end of the small water guiding cone sleeve is fixedly connected to the small diameter end of the large water guiding cone sleeve, and the upper end is fixedly connected to the hub of the impeller, to achieve uniform axial flow of fluid in the flow channel, eliminate the bottom vortex at the inlet of the large diameter oblique flow pump or axial flow pump, and avoid hydraulic vibration and local cavitation of the water pump. It has the advantages of simple structure, safety and reliability, good drainage effect, easy disassembly and assembly, reduced circumferential and radial flow velocity, and improved uniformity of end face axial flow velocity.

Technical requirements: 1. A water guiding device for a vertical suspended semi submersible vertical turbine pump, comprising a pump body and an impeller, characterized in that a water guiding device is provided at the center of the suction section of the pump body, comprising a large water guiding cone sleeve and a small water guiding cone sleeve. The large water guiding cone sleeve is in the shape of a horn, gradually concave in an arc shape from the large-diameter end along the axial direction towards the small-diameter end, and the small water guiding cone sleeve is cylindrical in shape. The lower end of the small water guiding cone sleeve is fixedly connected to the small-diameter end of the large water guiding cone sleeve, and the upper end is fixedly connected to the hub of the impeller.