Casting stirrer adopting segmented screw

Abstract

The invention relates to a casting stirrer adopting a segmented screw. The casting stirrer comprises a vertically arranged stirred tank, a stirring shaft is arranged in the stirred tank, one end of the stirring shaft penetrates out of the upper end of the stirred tank and is connected with a driving device arranged outside the stirred tank, the other end of the stirring shaft is provided with a stirring screw, the stirring screw is composed of an upper screw and a lower screw arranged from top to bottom, the external diameter of the helical blade of the upper screw gradually increases in a pagoda-shaped manner from top to bottom, and the external diameter of the helical blade of the lower screw is greater than or equal to the largest external diameter of the upper screw. The aerated concrete casting stirrer adopting the pagoda-shaped helical blade and increasing guide sleeves with bell mouths and guide cones enhances the stirring effect, changes the flow field of eddy current formed by the screw, reduces the energy consumption of upward change of the flow direction after the contact of the eddy current with the bottom of the stirred tank, enlarges the influence range of eddy current, and eliminates the stirring blind angle at the upper portion of the liquid level of the stirred tank.

Description

technical field [0001] The invention relates to a pouring mixer using a segmented screw. Background technique [0002] The pouring mixer is a special equipment for the aerated concrete block production line. It is mainly used to stir the slurry, cement, quicklime, gypsum and aluminum powder paste suspension liquid injected into the tank according to a certain ratio, so that it can be mixed evenly and fully reacted. And timely inject the mixed slurry into the mold frame. The mixing intensity and time in the tank have a great influence on the quality of air-entrained concrete. [0003] Existing pouring machines such as figure 1 As shown, the main structure of the pouring machine includes a stirring tank 4, a material inlet 2, a material outlet 8, a shroud 7, a screw 6, a stirring shaft 3, and a stirring drive device 1, and the driving device 1 drives the screw 6 to stir through the stirring shaft 3 A strong vortex is formed in the stirring tank 4, which destroys the coating...

AI Technical Summary

Problems solved by technology

In order to enhance the stirring effect, the existing equipment usually adds a cylindrical shroud 7 to the stirring screw. In actual use, it is found that the vortex has little influence on the area above the liquid surface of the stirring tank 4, and there is almost no stirring effect.

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