Impeller structure of mixed transportation pump

Abstract

The invention discloses an impeller structure of a mixed transportation pump. The impeller structure comprises a movable impeller and movable impeller blades thereof, a static impeller and static impeller blades thereof; molded lines of the static impeller blades are S-shaped; inlet directions of the static impeller blades are the same with outlet directions of the movable impeller blades; outletplacing angles of the static impeller blades are 90 degrees; bending directions of inlet sections of the static impeller blades are opposite to bending directions of outlet sections; lengths of the inlet sections of the blades are 1 / 3 of the whole blade length; the molded lines are of smooth gentle transition structures; inlet and outlet thicknesses are smaller than thicknesses of the middle partsof the blades; the inlet positions of the static impeller blades are in front of the outlet positions of the static impeller blades; and seven blades are provided, and are uniformly arranged in the peripheral direction of the static impeller. The molded lines of the static impeller blades are S-shaped, and the inlet directions of the static impeller blades are the same with the outlet directionsof the movable impeller blades, so that the vortex and hydraulic loss in the static impeller of the mixed transportation pump are reduced, the supercharging performance of the static impeller is improved, and the efficiency of the mixed transportation pump is improved.

Description

technical field [0001] The invention belongs to the technical field of design and manufacture of delivery pumps, in particular to the design and manufacture of impellers of mixed delivery pumps. Background technique [0002] The cross-section of the vane of the static impeller of the existing mixed pump is an airfoil, and the blade profile curves in one direction. Large vortices appear in the stationary impeller, resulting in increased hydraulic loss in the stationary impeller. Therefore, when this static impeller is used, the efficiency of the mixed pump is low. In addition, the flow path of the stationary impeller of the existing mixed pump is short, and the boosting effect is not ideal. To achieve a large lift, more stages must be used. Contents of the invention [0003] According to the deficiencies of the prior art, the invention discloses an impeller structure of a mixed pump. The problem to be solved by the present invention is to provide a static impeller of a m...

AI Technical Summary

Problems solved by technology

[0002] The cross-section of the vane of the static impeller of the existing mixed pump is an airfoil, and the blade profile curves in one direction. Large vortices appear in the stationary impeller, resulting in increased hydraulic loss in the stationary impeller

Therefore, when this static impeller is used, the efficiency of the mixed pump is low

In addition, the flow path of the static impeller of the existing mixed pump is relatively short, and the boosting effect is not ideal. To achieve a large lift, more stages must be used

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