Inverted umbrella-shaped impeller

Abstract

The invention discloses an inverted umbrella-shaped impeller, comprising a rotating shaft, a rotating shaft sleeve body, an annular flat plate, umbrella rib blades and umbrella cover blades, wherein the rotating shaft is connected to the rotating shaft sleeve body; the rotating shaft is connected to an annular panel; the annular panel is connected to the umbrella cover blades; the annular panel is connected to the rotating shaft; the umbrella rib blades are connected to the umbrella cover blades; the umbrella rib blades are connected to the rotating shaft; the rotating shaft is in key joint to the rotating shaft sleeve body the umbrella cover blades; the annular panel is in socket key joint to the rotating shaft; the umbrella rib blades are in welding joint with the rotating shaft sleeve body; the umbrella rib blades are in welding joint with the umbrella cover blades; the umbrella cover blades are in welding joint with the annular flat plate; all welding joints are treated smooth and flat and are subjected to corrosion-resistant treatment; the umbrella cover blades are combined into a runner hub and are vertically arranged on the annular panel along an axis direction at a tangent line of an outer circle of the rotating shaft sleeve body driven by the rotating shaft; and all components are made of corrosion-resistant high alloy structural steel SUS316. The inverted umbrella-shaped impeller has the advantages of simple structure, convenient installation, complete aeration, uniform mixing and stirring, safety and reliability, etc.

Description

technical field [0001] The invention relates to an inverted umbrella impeller, which is especially suitable for the mechanical aeration of the activated sludge method in the organic waste water treatment process of the sewage treatment plant. 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, mos...

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

Images