Adjustable integrated impeller for reverse umbrella aerator

Abstract

The invention relates to an impeller, particularly provides an adjustable integrated impeller for a reverse umbrella aerator, and aims to solve the problem that the structure of an existing impeller can not be adjusted according to actual needs. The adjustable integrated impeller is composed of an impeller gusset plate and a plurality of blades, wherein the blades are distributed at the bottom of the impeller gusset plate. The impeller gusset plate is composed of an impeller shaft and a central plate arranged outside the impeller shaft, the central plate is provided with hole sites used to be connected with the blades, a caster angle alpha of each blade is formed between the center line of each hole site and the radial line of the impeller, and the different distances between the hole sites and the axis of the impeller shaft form different diameters of the impeller. The adjustable integrated impeller for the reverse umbrella aerator can meet requirements of different sewage treatment plants, the best running mode is achieved, and the purposes of energy conservation and consumption reduction are achieved; different structures can be integrally formed according to requirements to meet requirements of different occasions, and advantages of the structures can be exerted; and by increasing the value of the caster angle alpha of the blades, an aeration function of the impeller is enabled to decrease slightly, and therefore the plug flow effect is enhanced.

Description

technical field [0001] The invention relates to an impeller, in particular to an adjustable integrated impeller used in an inverted umbrella aerator. Background technique [0002] The first sentence of the "National Environmental Protection "Twelfth Five-Year" Plan" clearly stated that environmental protection is my country's basic national policy, but my country's water environment is not optimistic. Water is a basic natural resource and a strategic economic resource. The overall water resources in my country In the process of rapid urbanization, the shortage of water resources is even more serious. Therefore, increasing water pollution control is an urgent task at present. More than half of the sewage treatment process adopts the biological method. The key technology of this process is the aeration of the biological pool, and the inverted umbrella aerator is the main equipment for aeration. [0003] At present, the inverted umbrella surface aerators produced at home and a...

AI Technical Summary

Problems solved by technology

The structure of the impeller and the matching operating conditions determine the performance of the entire aerator, which affects the energy saving and consumption reduction of the sewage treatment process

Now all the aerator impellers are manufactured in the factory, that is, they are fully formed. This kind of formed impeller cannot meet the actual sewage treatment process requirements of each sewage plant to obtain its best structural form and reasonable operating state. The only way to change the speed of the impeller through frequency conversion to adjust the pushing flow and aeration volume is not reasonable in terms of energy saving strategy.

Furthermore, there are many inconveniences in the transportation and installation of the formed impeller. Therefore, it is a new topic to develop the design of the impeller to be fine, adjustable and integrated.

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