Stirring device for sewage treatment and flocculation equipment with same

Abstract

The invention discloses a stirring device for sewage treatment which comprises a driving part, a stirring shaft and an impeller, the impeller is concentrically and fixedly arranged on the stirring shaft, and the driving part is suitable for driving the stirring shaft to rotate in a reciprocating mode; the driving component comprises a rotary power source, a driving mechanism, a driving shaft, a shell and an energy storage mechanism, the one-way rotation of the rotary power source is suitable for driving the driving shaft to rotate forwards or backwards through the driving mechanism, and the driving shaft is concentrically and fixedly connected with the stirring shaft; the shell is fixedly arranged, energy storage mechanisms are arranged between the shell and the driving shaft, the number of the energy storage mechanisms is two, the energy storage mechanisms are suitable for storing energy through forward rotation and reverse rotation of the driving shaft respectively, and the energy storage mechanisms are suitable for releasing energy during forward rotation and reverse rotation conversion or reverse rotation and forward rotation conversion of the driving shaft. The stirring device has the advantages of full stirring, good mixing effect, good flocculation effect, reliable structure, stable operation and low cost.

Description

technical field [0001] The application relates to the field of sewage treatment, in particular to flocculation equipment. Background technique [0002] In recent years, the discharge of industrial sewage and domestic sewage in our country has been increasing year by year. The direct discharge of untreated or improperly treated sewage into the nature has seriously affected environmental sanitation and threatened people's water safety. In order to make the sewage meet the water quality requirements for being discharged into a certain water body or reused, it needs to be purified, and this process is sewage treatment. Sewage treatment has increasingly become an important part of environmental protection. [0003] In sewage purification treatment, it is generally necessary to introduce sewage into the flocculation tank, add flocculant and other chemicals, and then stir through the mixer. Under the action of the mixer, the flocculant and sewage are fully mixed, so that the dispe...

AI Technical Summary

Problems solved by technology

[0004] However, the usual flocculation mixer always rotates in one direction, so that the flow of sewage in the flocculation tank also rotates in one direction.

The above-mentioned stirring method usually has the following two problems: (1) In addition to producing axial circulation, the usual stirring method will also form a part of invalid circulation, so the mixing effect of the flocculant and the sewage to be treated is not good, resulting in the suspension effect of solid particles Poor, low flocculation efficiency; (2) The impeller of the mixer will have a shearing effect on the flocs while stirring. When the mixer continues to rotate in one direction, the impeller may cut and chop the flocs. Insufficient precipitation of solid particles, especially for microbial flocculants with general flocculation effects, the above-mentioned cutting effect is more obvious

Images