Flocculation stirrer

Abstract

The invention discloses a flocculation stirrer. The stirrer comprises a stirring barrel, an inner barrel is mounted in the stirring barrel; the inner barrel is coaxial with the stirring barrel; the stirring barrel comprises a barrel cover; a stirring shaft is mounted on the barrel cover; the stirring shaft is driven by a motor to rotate; the stirring shaft comprises an upper stirring shaft and a lower stirring shaft; an outer stirring shaft is mounted on the upper stirring shaft; outer fan blades for generating upward vortexes are mounted on the outer stirring shaft, inner fan blades for generating downward vortexes are mounted on the lower stirring shaft, a filter screen is connected between the periphery of the lower barrel opening and the barrel bottom of the stirring barrel, a sludge discharging pipe which is vertically arranged downwards is arranged in the middle of the barrel bottom of the stirring barrel, and a water discharging pipe which is horizontally arranged is arranged atthe lower part of the barrel wall of the stirring barrel. According to the flocculation stirrer, flocs are filtered and intercepted in the stirring process, the influence of the flocs on the flocculation effect is avoided, sewage in the stirrer can form convection, stirring dead corners are avoided, and discharging of the flocs and cleaning of the stirrer are very convenient.

Description

technical field

[0001] The invention belongs to the technical field of agitators, in particular to a flocculation agitator. Background technique

[0002] Flocculation refers to the aggregation of suspended particles in water or liquid, or the formation of flocs, so as to accelerate the aggregation of particles and achieve the purpose of solid-liquid separation. This phenomenon or operation is called flocculation. Usually, flocculation is implemented by adding an appropriate flocculant, whose function is to adsorb particles and "bridge" between particles, thereby promoting agglomeration. The flocculation effect depends on the characteristics of the particles and the fluid mixing conditions. Adding a coagulant to water containing small particles will cause the particles to destabilize and start flocculating. Therefore, stirring is also required when flocculation is used to treat sewage. However, when the existing flocculation agitator treats sewage, as the flocs become larg...

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