New improvements of suspended semi submersible vertical turbine pump

A new suspended semi submersible vertical turbine pump, including a motor, pump shaft, and impeller; The motor is installed on the motor base, and a pump support is installed below the motor base. The upper end of the connecting pipe is fixedly connected below the pump support, and the lower end of the connecting pipe is fixedly connected to a space guide vane body with a cavity and a flow channel. The impeller is located inside the space guide vane body; The pump shaft casing is equipped with a protective tube connecting the upper end of the pipe flow channel to the three-way hydraulic component inside the pump support, and the lower end of the connecting pipe flow channel to the flow channel of the spatial guide vane body; Its feature is that the connecting pipe is divided into two or more sections, and there are bearing seats between adjacent connecting pipes. The bearing sleeve set inside the bearing seat is located outside the pump shaft, and the flange stop at the end of the connecting pipe is inserted and positioned in coordination with the bearing seat stop. It has a bolt group to connect the flanges at the end of adjacent connecting pipes. This technical method enables modular production of several pump structures, which can improve production and assembly efficiency, reduce costs, and enhance the overall stability and lifespan of the pump。

Technical requirements: 1. A new type of suspended semi submersible vertical turbine pump, comprising a motor, the output shaft of the motor is connected to the upper end of the pump shaft, and an impeller is installed at the lower end of the pump shaft; The motor is installed on the motor base, and a pump support is installed below the motor base. The upper end of the connecting pipe is fixedly connected below the pump support, and the lower end of the connecting pipe is fixedly connected to a space guide vane body with a cavity and a flow channel. The impeller is located inside the space guide vane body, and there is a seal between the space guide vane body and the pump shaft; The pump support is equipped with a bearing seat, and the lower end of the connecting pipe is equipped with a bearing seat. The bearing sleeve inside the bearing seat is set outside the pump shaft, and there is a seal between the bearing seat and the pump shaft. The pump shaft sleeve is equipped with a protective tube, and the upper and lower ends of the protective tube are respectively fixed on the bearing seat; The space between the protective pipe and the connecting pipe forms a connecting pipe flow channel, with the upper end of the connecting pipe flow channel connected to the three-way hydraulic component inside the pump support, and the lower end of the connecting pipe flow channel connected to the flow channel of the spatial guide vane body; The feature is that the connecting pipe is divided into two or more sections, and there are bearing seats between adjacent connecting pipes. The bearing sleeve set in the bearing seat is set outside the pump shaft, and there is a seal between the bearing seat and the pump shaft. The flange stop on the flange at the end of the connecting pipe and the bearing seat stop on the bearing seat are inserted and positioned in coordination with each other. There is a bolt group connecting the flanges at the end of adjacent connecting pipes to fix the adjacent connecting pipes and fix the bearing seat between them. There is a sealing gasket between the flange at the end of the connecting pipe and the bearing seat; Each connecting pipe corresponds to a section of protective pipe, and the ends of the protective pipe are respectively fitted onto the corresponding bearing seats. There is a sealing ring between the protective pipe and the bearing seat; The seal between the bearing seat and the pump shaft mentioned above is a mechanical seal or a skeleton type oil seal; Thus, a relatively independent suspended semi submersible vertical turbine pump segmented fixed connection device structure is formed.