Rotary material-shifting type steaming warehouse

Abstract

The invention discloses a rotary material-shifting type steaming warehouse. The rotary material-shifting type steaming warehouse comprises a warehouse body, a discharging device and a rotary material-shifting device, wherein the rotary material-shifting device comprises a material shifting disk arranged at the bottom of the warehouse body, the material shifting disk comprises a chassis and a material shifting plate capable of rotating on the chassis; the discharging device comprises a shell and a discharging motor; a discharging helix is arranged in the shell; a helix shaft of the discharging helix is connected with a discharging motor which is arranged on one side of the shell in a transmission mode; a discharging port is formed in the lower part of the other side of the shell; the discharging device is positioned below the material shifting disc; a blanking opening is formed in an abut-jointed part of the chassis of the material shifting disc and the discharging device shell. According to the rotary material-shifting type steaming warehouse, raw materials are continuously layered by rotating the material shifting device and shifted into the discharging device through the blanking opening, and the materials are prevented from sliding and rotating by virtue of an anti-slipping strip, so that the bridging phenomenon caused by volume expansion due to the heating of the materials is avoided, the utilization rate of the volume of the warehouse is improved, the materials are fully steamed and softened, the subsequent chemical extrusion steeping effect and the removal rate of soluble colored and resin substances are effectively improved, and the consumption of chemical products is reduced.

Description

technical field [0001] The invention relates to a steaming bin, in particular to a steaming bin for chemical mechanical pulping. Background technique [0002] During chemical mechanical pulping extrusion impregnation, in order to reduce chips and impregnate uniformly, it is necessary to soften the wood chips well and improve the plasticity of the wood chips. The temperature and moisture content of the wood chips are the important influencing factors. The higher the temperature, the better the softening effect; the chemical components of wood chips contain some water, air, water-soluble colored substances and resinous substances, and water-soluble colored substances and resinous substances will first consume chemicals and affect the bleaching effect. Good extrusion effect can effectively remove these harmful substances together with water before chemicals are added. [0003] Therefore, pre-steaming of pulping raw materials such as wood chips before extrusion impregnation is ...

AI Technical Summary

Problems solved by technology

[0005] However, the structural design of the existing steaming chamber has a low capacity utilization rate, that is, a low material filling rate, resulting in a short residence time for steaming in the material chamber, reduced steam softening, moisture balance and buffering effects, and insufficient softening of wood chips, which will affect the subsequent extrusion and impregnation. In terms of the process, while reducing the effect of extrusion and impregnation, the removal rate of water-soluble colored substances and resinous substances is reduced, so the consumption of chemicals for chemical treatment must be increased, especially the consumption of bleaching chemicals. Problems With the quality of pulping raw materials such as domestic commercial wood chips decreasing year by year, the impact is becoming more and more prominent

At the same time, the volume of wood chips will expand when heated. When the material level in the warehouse is high, the wood chips will be in a compacted state. After thermal expansion, the compaction will be more compact, which will easily cause bridging phenomenon and blockage due to poor feeding.

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