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Method for extracting wheat flour from wheat bran

A technology of wheat bran and wheat flour, which is applied in the field of food processing, can solve the problems of weak hitting effect, deterioration of flour quality, low speed of bran beating machine, etc., and achieve the effect of improving flour extraction rate and not being easily damaged

Active Publication Date: 2019-02-19
DEZHOU VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The wheat flour on the wheat bran is very tightly bonded to the wheat cortex. In the existing technology, the wheat bran is simply processed by a bran beater, and the extraction rate of wheat flour is not high (about 3%-5%). Analysis of the bran beater The reason for the low rate of extraction of flour from wheat bran is that the rotational speed of the bran beating machine is not high (800-1200r / min), and the striking effect is not strong enough to fully vibrate the wheat flour on the wheat bran.
[0005] (2) Since the bran beating machine uses a dry method to crack the brittle and soft wheat bran, it is bound to have a certain crushing effect on the wheat bran, and the crushing of the wheat bran will seriously deteriorate the quality of the flour.

Method used

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  • Method for extracting wheat flour from wheat bran

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 Shown, a kind of bran cutting machine, this bran cutting machine comprises frame 1, cylinder sieve 2 and is positioned at cylinder 2 and drives shaft 3 that rotates relative to cylinder sieve 2, is provided with along drive shaft 3 circumferential directions A plurality of cutting knives 4, one end of the cutting knives 4 close to the inner wall of the cylindrical sieve 2 forms a bran-cutting surface, and a gap is formed between the bran-cutting surface and the cylindrical sieve 2. The cylinder sieve 2 is provided with a feed inlet and a discharge outlet, and a plurality of cutters 4 are spirally arranged on the drive shaft 3, and the gap between the bran cutting surface and the cylinder sieve 2 is 0.6-1.3mm. The width of the cut bran noodles is preferably 0.3-0.8 mm.

[0027] In the bran cutting machine in this embodiment, a plurality of cutting knives are rotated relative to the cylindrical sieve on the rotating shaft. After the wheat bran enters fro...

Embodiment 2

[0029] A method for extracting wheat flour from wheat bran, comprising the steps in turn:

[0030] Tempering: Watering the surface of the wheat bran by spraying a watering machine to control the moisture content of the wheat bran to be 14%;

[0031] Scraping and peeling: the wheat bran after conditioning is processed by a bran cutter, and the rotating speed of the bran cutter is controlled to be 2800r / min. A gap is formed between the bran cutting surface of the cutter and the cylindrical sieve, and the size of the gap is 0.8mm.

[0032] Sieving: Send the mixture obtained after scraping and stripping into a sifting machine, sieve it, and collect the under-sieve to obtain wheat flour.

Embodiment 3

[0034] A method for extracting wheat flour from wheat bran, comprising the steps in turn:

[0035] Tempering: Watering the surface of the wheat bran by spraying the watering machine, controlling the moisture content of the wheat bran to be 12%;

[0036] Scraping and peeling: the wheat bran after conditioning is processed by a bran cutter, and the rotating speed of the bran cutter is controlled to be 2500r / min. A gap is formed between the bran cutting surface of the cutter and the cylindrical sieve, and the size of the gap is 0.6mm.

[0037] Sieving: Send the mixture obtained after scraping and stripping into a sifting machine, sieve it, and collect the under-sieve to obtain wheat flour.

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Abstract

The invention provides a method for extracting wheat flour from wheat bran. The method comprises the steps of tempering, scraping and sieving, wherein the moisture content of the wheat bran is controlled to be 12 to 18 percent in the tempering step; the tempered wheat bran is treated by a bran cutting machine in the scraping step; and the rotating speed of the bran cutting machine is controlled tobe 2500 to 3300 r / min. According to the method for extracting the wheat flour from the wheat bran, which is provided by the invention, the toughness of the bran is increased by tempering, so that thebran is not easily broken under strong stripping force, and the quality of the extracted flour is guaranteed; and the flour extraction rate is increased speed at a high rotating speed and by enhancing the striping action, and the flour extraction rate can reach 4 to 8 percent. The quality of a flour product extracted by the production method is close to that of the existing process on the premiseof increasing the flour extraction rate.

Description

technical field [0001] The technical field of food processing of the present invention relates to a wheat processing technology, in particular to a method for extracting wheat flour from wheat bran. Background technique [0002] The wheat bran produced by the existing wheat processing technology still contains 3-6% wheat flour, and the wheat flour has not been fully extracted. In recent years, the price of wheat bran has been kept low. If the wheat flour in wheat bran is not fully extracted, it will have a great impact on the economic benefits of wheat processing enterprises. [0003] The wheat flour in wheat bran is not sufficiently extracted for the following reasons: [0004] (1) The wheat flour on the wheat bran is very tightly bonded to the wheat cortex. In the existing technology, the wheat bran is simply processed by a bran beater, and the extraction rate of wheat flour is not high (about 3%-5%). Analysis of the bran beater The reason why the flour extraction rate i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L7/10
CPCA23L7/198
Inventor 兰晓光王旭峰汪宁王凤玲张水生侯焕福郭勇夏妍王莉徐英菊牛秋云张彬和承英白金崔云赵严姚震谷红敏晏晓旭杨静秋侯娟吕伟李书丰商红萍
Owner DEZHOU VOCATIONAL & TECHN COLLEGE