Extend-range type liquid flow pump

Abstract

The invention discloses an extend-range type liquid flow pump. The defects that an existing common liquid flow pump is short in lift or the sucking force is small, and the requirement of liquid supplyof a high-rise building cannot be met well are solved. According to the technical scheme, the extend-range type liquid flow pump comprises a motor and a pump body, an impeller is rotationally arranged in the pump body, the impeller is in transmission linkage with a power output shaft, a liquid inlet pipe is led into the pump body, and a liquid outlet pipe communicated with the interior of the pump body supplies outlet liquid. The extend-range type liquid flow pump is characterized in that a pressurizer is communicated with the liquid inlet pipe, the pressurizer is communicated with the interior of the pump body though a backflow pipe, a liquid inlet opening of the backflow pipe and a liquid inlet opening of the liquid outlet pipe are staggered, and the pipe diameter of the liquid inlet pipe is larger than the pipe diameter of the liquid outlet pipe and the pipe diameter of the backflow pipe.

Description

technical field [0001] The invention relates to a liquid flow pump, in particular to a high lift range-extended liquid flow pump. Background technique [0002] A Chinese utility model patent (Patent No.: 201720133309.7) discloses a pump, which includes a main pump body, a base, a pressure ring and a motor assembly. The lower end surface of the pressure ring is placed on the table of the step, the motor assembly includes a motor casing, the motor casing passes through the pressure ring, and the motor casing is pressed on the upper end surface of the pressure ring. The opening end of the main pump body is screwed on the side wall of the base step so that the main pump body presses the motor casing tightly on the pressure ring. [0003] This kind of pump uses the negative pressure generated by the rotation of the impeller in the pump body to attract the liquid flow in the liquid source, and sends the liquid flow out of the pump body through the centrifugal force generated by t...

AI Technical Summary

Problems solved by technology

And now the buildings tend to be high-altitude, the buildings are built higher and higher, and the ordinary one-way water pump can't meet the water supply demand of high-rise buildings at all.

After the building exceeds the head limit of the single-way water pump, it is necessary to use water pumps to pump water in stages. However, a large number of existing medium and high residential buildings often need to be equipped with staged water supply devices. construction cost

Images