Grid type stirrer

Abstract

The invention relates to the technical field of sewage treatment, and provides a grid type stirrer which comprises a shell and a stirring assembly, and a cavity for containing a solution is defined bythe shell; the stirring assembly comprises a driving part and a grid frame connected to a rotating shaft of the driving part, the grid frame is arranged in the cavity, a plurality of grid holes are formed in the grid frame, and the grid frame extends in the axial direction of the rotating shaft. The grid type stirrer overcomes the defect of poor stirring flocculation effect in the prior art, utilizes the grid frame for stirring, and can utilize the grid flocculation reaction principle to enable the water flow to contract and expand before and after passing through the meshes to reinforce theturbulence effect and form a good flocculation condition, so that the solution is fully flocculated, the best flocculation reaction floc is generated after the dosing reaction, and the grid frame rotates all the time so that grid holes can be effectively prevented from being blocked, the head loss is reduced, and meanwhile, the energy consumption of pure mechanical stirring is reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a grid mixer. Background technique [0002] Dosing coagulation reaction is a conventional technology in the field of sewage treatment, including two parts: mixing and flocculation; the function of mixing is to promote the dissolution of the chemical, and fully mix the chemical with the sewage; the flocculation process is to make the micro flocs with coagulation properties collide with each other , to form larger flocs for effective separation during subsequent settling. In order to ensure the flocculation effect, the flocs must have the ability to aggregate after contacting each other, and at the same time have the hydraulic conditions for the flocs to obtain corresponding contact and collision without causing breakage. [0003] In general, paddle stirring is used to promote flocculation reaction, that is, simple two or several thin paddles are used for stirring. The pa...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a grid type mixer to solve the defect of poor stirring and flocculation effect in the prior art. The grid frame is used for stirring, and the advanced grid flocculation reaction principle can be used to make the water flow shrink and expand before and after passing through the mesh. Strengthen the turbulent flow to form good flocculation conditions, so that the solution can fully flocculate and react, so that the best flocculation reaction flocs can be produced after the dosing reaction, and the grid frame is always rotating, which can effectively avoid grid hole blockage and reduce water head. Loss, while reducing the energy consumption of pure mechanical stirring

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