Crushing pump utilizing streamlined cutter heads

Abstract

The invention relates to a crushing pump utilizing streamlined cutter heads. A crushing device is installed in front of an impeller inlet and substantially comprises a dynamic cutter and a static cutter. The dynamic cutter is fixed at the shaft end in front of the impeller inlet and pressed on the shaft through a fastening bolt of the shaft end to achieve axial fixing. The dynamic cutter rotates along with a pump shaft. More than one cutter head is arranged on the lower surface of the dynamic cutter close to the position of the external diameter and downwards extend for a certain height along the shaft. The cutter heads are in streamlined shapes viewed both from the axial direction and the radial direction. The cutter heads are in streamlined shapes with both the width and the height decreasing in the direction opposite to the rotating direction. The static cutter is fixed on fixed pieces such as a pump body, a pump cover or the like, a plurality of semi-circular flow channels for limiting the diameter of particles passing through are arranged on the inner circumference of the static cutter, and two sides of each flow channel form two cutting edges matched with the rotating cutter heads of the dynamic cutter to crush sundries. The dynamic cutter utilizes the streamlined cutter heads, thereby reducing flow losses and effectively improving flow situations of the inlet of the crushing pump and crushing performance of the crushing pump.

Description

technical field [0001] The invention relates to a pulverizing pump, in particular to a pulverizing pump adopting a streamlined cutter head. Background technique [0002] The pulverizer pump is a non-clog pump used to transport sewage. The large particles and long-fiber debris in the sewage enter the crushing pump, and are first crushed by the cutter head at the inlet, and then transported out by the pump. For the traditional crushing pump, because there is a cutter head at the inlet of the pump, the shape of the cutter head is improper, the flow at the inlet of the crushing pump is relatively turbulent, and cavitation will occur near the rotating cutter head, resulting in the lift, flow and Efficiency and other aspects of performance decline. Therefore, it is necessary to change the shape of the cutter head, reduce the flow resistance, improve the flow condition at the inlet of the crushing pump, and then improve the performance of the crushing pump. Contents of the inve...

AI Technical Summary

Problems solved by technology

For the traditional crushing pump, because there is a cutter head at the inlet of the pump, the shape of the cutter head is improper, the flow at the inlet of the crushing pump is relatively turbulent, and cavitation will occur near the rotating cutter head, resulting in the lift, flow and Efficiency and other aspects of performance decline

Images