Guide-blade impeller

Abstract

The invention discloses a guide-blade impeller, which comprises impellers, a connecting panel, a rotating shaft, a shaft sleeve, impeller blades, guide blades and circulating water inlet holes, wherein the rotating shaft is connected with the shaft sleeve; the shaft sleeve is connected with the connecting panel; the connecting panel is connected with the guide blades; the shaft sleeve is connected with the impeller blades; the connecting panel is connected with the circulating water inlet holes; the impeller is connected with the circulating water inlet holes; the shaft sleeve is connected with the connecting panel in a welding manner, and the welding part needs to be smooth and flat and be subjected to corrosion-resistant treatment; the 12 impellers combine to form a runner hub and are perpendicularly distributed on the connecting panel along the axis direction, and are distributed on tangents of the gravity circle of the impellers driven by the rotating shaft; the number of the circulating water inlet holes is 12; the cross section area of each hole is 1.2 times larger than the calculated treatment area; the distance between the impeller and the guide blade is 8mm; the distance between the connecting panel and the impeller is 10mm; and all the components are made of a corrosion-resistant high alloy structural steel SUS316. The guide-blade impeller has the advantages of simple structure, convenient installation, complete oxygenation, uniform mixing and stirring, safety, reliability and the like.

Description

technical field [0001] The invention relates to a vane-type impeller, which is especially suitable for mechanical aeration of activated sludge method in the process of organic wastewater treatment in sewage treatment plants. Background technique [0002] Sewage treatment plants use suspended growth of microbial flocs to treat organic wastewater and aerobic biological activated sludge treatment. The process of purifying wastewater is mainly composed of three major processes: adsorption, microbial metabolism, coagulation and precipitation, also known as aerobic biological Oxygen is required for treatment, degradation of organic matter, and synthesis of organisms. Without sufficient dissolved oxygen, aerobic microorganisms cannot survive, let alone oxidize and decompose. At the same time, as an effective treatment process, microorganisms, organic matter and oxygen must be fully contacted, so mixing and stirring will be indispensable. [0003] At present, most sewage treatment...

AI Technical Summary

Problems solved by technology

[0003] At present, most sewage treatment plants realize oxygenation and mixing through aeration equipment, but due to the limited ability of water to dissolve oxygen and the high concentration of sludge in the mixed liquid, the diffusion resistance of oxygen in the liquid phase is relatively large, so the supplied oxygen cannot All are absorbed by water, and the oxygenation capacity of different aeration equipment is also different

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