a starch grinder

Abstract

The invention discloses a starch grinder which comprises hammer pieces, a screen mesh and a rotating drum, wherein a shaft hole is formed in the lower part of each hammer piece; the upper parts of the hammer pieces are combined with alloy steel blocks; the tips of the alloy steel blocks act as knife edges of the hammer pieces; the hammer pieces are fastened to fixing pipes on the rotating drum through the shaft holes of the hammer pieces; and the mean distribution density of the hammer pieces on the rotating drum is one piece per 15-30cm<2>. According to the grinder, the knife edges of the hammer pieces are difficult to abrade; the hammer pieces are long in service life; the energy consumption is low; and the production efficiency of starch can be improved significantly.

Description

technical field [0001] The invention relates to the technical field of starch pulverization, in particular to a starch pulverizer for secondary pulverization of starch. Background technique [0002] The production process of starch generally includes potato pieces cleaning, peeling, crushing, sieving, separation, cleaning, dehydration, drying, and finished products. , The same kind of pulverizer has always been used in the secondary pulverization; the pulverizer currently used is a flying hammer type, generally a heavy hammer is strung in the circular steel pipe of the drum, and the hammer can rotate freely. The average distribution density is generally every 80 ~ 560cm 2 Distribute a piece, drive the drum to rotate through the motor, and quickly hit the potato pieces by the weight inertia of the hammer, thereby crushing the potato pieces, and the crushed starch is sieved through the screen. The hammer of the existing pulverizer is generally made of cast iron or carbon ste...

AI Technical Summary

Problems solved by technology

The hammers of existing pulverizers are generally made of cast iron or carbon steel, so the blades are easily worn. After the blades are worn, the crushing efficiency will drop sharply, resulting in the scrapping of the steel sheets. There are two hollow shaft holes, and knife edges are provided at both ends of the hammer, so that after one end of the knife is worn, it can be turned over and installed to continue to use the other end of the knife to continue working, prolonging the service life of the hammer, but the effect is still limited. It is impossible to get rid of the tedious operation that requires frequent replacement of the hammer; and the more prominent problem is that, because the feed material of the secondary crushing is small pieces of starch after the primary crushing, the crushing efficiency is extremely high when using the existing pulverizer for the secondary crushing. Low, the proportion of large-grained starch and crude fiber in the discharged starch of the secondary crushing is relatively high, and the large-grained starch will be screened out together with other wastes in the subsequent separation stage, resulting in a low starch yield and seriously affecting the starch industry. production efficiency

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