Starch separation method and device

Abstract

The invention provides a starch separation method and a device. The method comprises the steps of grinding, screening, concentration, refining, dehydration, drying and packing, wherein the concentration step comprises a step for concentrating starch milk and a step of secondary washing, a multi-level swirler is adopted to separate juice, starch milk and sludge in a backflow washing way, and the secondary washing step comprises the following steps that: the discharged overflow is supplied to the screening step or the discharged overflow is re-separated or directly discharged. The starch processing method can reduce the energy consumption, improve the yam starch quality and the yield, and especially has the advantages that the water can be saved and the separated starch juice can be recycled when abnormality happens. The device by adopting the method is simple to operate, consumes less water and has high working efficiency.

Description

technical field [0001] The invention relates to a solid-liquid separation method and equipment, in particular to a manufacturing process and equipment for potato processed starch. Background technique [0002] At present, potato processing generally goes through the following process: cleaning of raw materials - crushing - screening - cyclone separation - dehydration - drying - packaging - finished products. Potatoes (mainly including sweet potatoes, cassava and potatoes) are first pre-treated and cleaned, and then enter the designated crushing facility. The raw materials are crushed into potato pulp and then sent to four-stage or multi-stage screening to initially separate the crude fibers. The remaining potato pulp is put into the cyclone separation process. During this process, the potato pulp is concentrated and refined, and finally the starch in it is separated from protein, fine fiber and other impurities to obtain refined starch milk, which is then subjected to vacuum...

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Problems solved by technology

[0003] The patent number is "ZL00129615", and the patent title is "a starch manufacturing method and equipment". It discloses the manufacturing process and equipment of starch separation by cyclone workstation, but the water consumption of the method and equipment is relatively high. Large, and the extraction rate of potato starch is low, the starch yield of the whole starch production line is low, and the quality of the finished product needs to be improved

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