Aerator impeller with log spiral curved surfaces

Abstract

The invention discloses an aerator impeller with log spiral curved surfaces.. According to the invention, eight vertical plates are uniformly and integrally arranged around a hollow shaft; stirring blades are fixed through bolts; the stirring blades take the shapes of curved surfaces and are generated according certain rule type buses; round holes are arranged at the middle parts of the stirring blades and used for stress unloading; the stirring blades are connected with a connection disc through bolts; and folded edges are arranged at joints of the stirring blades and the connection disc. The aerator impeller has the technical effect that the aerator impeller of the structure has the function of curving backwards and rebounding along with the change of plug flow load and is capable of basically keeping the stability of flow speed and aeration efficiency, so that the efficiency is improved.

Description

technical field [0001] The invention relates to an aerator impeller, in particular to an aerator impeller with a logarithmic helical curved surface. Background technique [0002] The aerator is the key equipment of the sewage treatment system. The impeller of the traditional inverted umbrella surface aerator adopts a large-angle inverted cone and a wide blade direct radiation arrangement. The structure of the whole machine is basically the same, and the welding structure of the impeller is slightly different. . The hydraulic geometric parameters of the impeller, the cone angle of the cone, and the blades are very similar. [0003] The key to the design of the aerator is to fully mix the high-speed air and water, and have the functions of spraying the high-speed air-water mixture to obtain better bubble fragmentation and air-water mixing effects and reduce fluid velocity loss. However, the traditional aerator impeller still often has problems such as short flow, dead an...

AI Technical Summary

Problems solved by technology

However, the traditional aerator impeller still often has problems such as short flow, dead angle, sludge deposition and low treatment efficiency in the process of sewage treatment.

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