Drainage impeller with annular groove

Abstract

A drainage impeller with an annular groove comprises a shaft center from which a plurality of main blades in a vertical wall shape extend outwards in the radial direction, and an annular bottom plate arranged at the bottoms of the plurality of main blades, wherein a preset distance is reserved between the annular bottom plate and the axis, so that a plurality of hollow parts are formed among the axis, the plurality of main blades and the annular bottom plate, and the annular bottom plate is provided with a plurality of sub-blades which extend outwards along the radial direction of the axis; an annular wall extends upwards from the annular bottom plate along the outer edge of the annular bottom plate, a shoulder plate extends outwards from the top edge of the annular wall, and the shoulder plate is provided with an outer annular wall with an upward top surface, an outer annular wall extending downwards from the outer edge of the shoulder plate and a blocking wall extending upwards from the outer edge of the shoulder plate; in addition, an annular groove with a downward opening is defined by the outer annular wall, the shoulder plate and the annular wall.

Description

technical field [0001] The invention relates to a drainage device, in particular to a drainage impeller provided in a drainage pump with an annular groove. Background technique [0002] China Taiwan No. M584406 patent discloses a drainage impeller with balance holes arranged in the drainage pump. In this case, a plurality of balance holes are set on the drainage impeller, which can effectively discharge the air bubbles in the water behind the blades, so that The air bubbles will not stay behind the blades, which can greatly reduce the noise and vibration of the drainage impeller when it is running. [0003] The aforementioned prior art, in actual use, at the initial stage of the drainage stage, that is, when the drainage impeller just starts to operate and water is sucked into the drainage pump, the water will quickly pass through the multiple hollow parts in the center of the drainage impeller and flow into the drainage pump. to the annular bottom plate of the drainage imp...

AI Technical Summary

Problems solved by technology

[0003] The aforementioned prior art, in actual use, at the initial stage of the drainage stage, that is, when the drainage impeller just starts to operate and water is sucked into the drainage pump, the water will quickly pass through the multiple hollow parts in the center of the drainage impeller and flow into the drainage pump. to the annular bottom plate of the drainage impeller, and the water level on the annular bottom plate will still rise rapidly, and then flow to the annular wall due to the centrifugal force of the drainage impeller, cross the annular wall and hit the inner wall of the drainage pump to cause vibration and noise, this problem needs to be improved

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