Starch extraction device

Abstract

The invention belongs to the technical field of macromolecular carbohydrate extraction equipment, and discloses a starch extraction device which comprises an outer barrel and a crushing part, an extraction part and a filtering part which are arranged in the outer barrel, the crushing part comprises a crushing barrel, a crushing shaft is rotatably connected in the crushing barrel, and crushing blades are fixed outside the crushing shaft; the extraction part comprises an extraction block and a stirring shaft, the extraction block is arc-shaped, and a permeable hole is formed in the bottom of the extraction block; the stirring shaft penetrates through the outer barrel and is rotationally connected with the outer barrel; a grinding block is arranged on the stirring shaft; the stirring shaft is also hollow and internally communicated with a water inlet pipe, and water spraying holes are formed in the periphery of the stirring shaft; the filtering part comprises a three-stage filtering net, the three-stage filtering net is fixed on the inner wall of the outer barrel, and filtering holes of the three-stage filtering net are gradually reduced from top to bottom. According to the invention, the problems of low extraction rate during each pulp washing, repeated pulp washing and low efficiency of the whole technological process caused by limited saturation degree of water and pulp in crushed materials in the existing pulp washing mode are solved.

Description

technical field [0001] The invention belongs to the technical field of high molecular carbohydrate extraction equipment, and in particular relates to a starch extraction device. Background technique [0002] Starch is a high-molecular carbohydrate. In addition to food, it is used industrially to make dextrin, maltose, glucose, alcohol, etc. It is also used to prepare printing paste, sizing textiles, gluing paper, and pressing pharmaceutical tablets. , is widely used. Starch is usually extracted from starch-containing substances such as corn, sweet potatoes, wild acorns, and kudzu root. The extraction method is to grind the raw materials by water milling to obtain a mixture, and then filter to obtain a slurry. , extract the condensed substance at the bottom, and dry it to obtain starch. [0003] At present, the extraction devices all mix and stir the pulverized pulverized product with water, so as to dissolve the slurry in the pulverized product. However, in this way, sinc...

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Problems solved by technology

[0004] The present invention intends to provide a starch extraction device to solve the problem that in the existing extraction device, water is added to the pulverized product to dissolve the slurry in the pulverized product, but the saturation degree of water and the slurry in the pulverized product is limited, resulting in the The extraction rate in the first washing is low, and multiple washings are required, resulting in a problem of low efficiency in the entire process

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