Water pump impeller used for cleaning machine and application thereof

Abstract

The invention relates to a water pump impeller used for a cleaning machine. The water pump impeller comprises a second impeller capable of enabling fluid to be dispersed in the radial direction at thefirst end and a first impeller capable of sucking fluid in the axial direction, the first impeller is arranged on the second end of the second impeller and is coaxial with the second impeller, the first impeller comprises a first center shaft and first blades arranged on the periphery face of the first center shaft, the first blades spirally extend in the axial direction on the periphery face ofthe first center shaft, and the spiral turn number of the first blades on the periphery face of the first center shaft is larger than one, due to the fact that the first impeller is axial, the relative flow rate of the water flow on the outer edge of the first impeller is maximum, cavitation can appear in the outer edge of the first impeller firstly, when cavitation reaches the second impeller, liquid close to the center shaft of the second impeller compresses the outer edge cavitation under the centrifugal force effect, the liquid can only get close to the outer edge and moves in the axial direction, the cavitation forms high-pressure area collapsing on the upper end of the second impeller, the cavitation development is greatly limited, the flow and the lift of the pump are improved, andthe cleaning effect is improved.

Description

technical field [0001] The invention relates to a water pump impeller for a washing machine and its application, in particular to a water pump impeller for a washing machine that can be used in washing machines for dishes, fruits and vegetables, etc. to improve the cleaning effect. Background technique [0002] Before the water pump works, the water pump and the water inlet pipe must be filled with water, and then rely on the high-speed rotating impeller to make the liquid gain energy under the action of inertial centrifugal force to increase its internal pressure. When the impeller rotates rapidly, the first blade promotes the water quickly Rotate, fly out of the impeller with the action of centrifugal force, after the water in the pump is thrown out, the central part of the impeller forms a vacuum area, and then the water from the water source enters the water inlet pipe under the action of atmospheric pressure (or water pressure) , so that the cycle is endless, and contin...

AI Technical Summary

Problems solved by technology

However, since the first blades for axially drawing water and for centrifugal dispersion are integrally formed, and the first blade part for axially drawing water is relatively short, in the process of drawing water, when the cavitation carried in the liquid If it develops to a certain extent, it will affect the characteristics of the outer edge of the first blade and reduce the performance. This is because the liquid in the flow channel of the centrifugal first blade flows from the axial direction to the radial direction, and the density of the liquid is higher than that of the gas. Under the action of centrifugal force, the cavitation in the liquid is easy to separate, and expand rapidly to block the flow channel, so that the suction performance of the pump is sharply reduced, which in turn affects the flow rate of the water outlet.

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