CN103894255A - Milling wheat cleaning process for flour mill - Google Patents

Abstract

The invention discloses a milling wheat cleaning process for a flour mill. The process includes the rough wheat washing step, the wheat wetting step and the clean wheat cleaning step. In the rough wheat washing step, firstly, screening, winnowing, stone removing, magnetic separation and wheat scouting are conduced on wheat which meets the requirement for flour processing quality; secondly, screening, stove removing, magnetic separation and wheat scouting are conducted on the wheat again and then the wheat is washed; thirdly, the wheat is sent to a wheat wetting bin to be used after being dampened through an efficient dampener. In the wheat wetting step, the wheat is sent to the wheat wetting bin to be used after being dampened through the efficient dampener, and after the wheat is appropriately wetted, the wheat to enter a mill enters a wheat cleaning and classification system. In the wheat cleaning step, magnetic separation is conducted on the clean wheat obtained through wheat wetting, the clean wheat is classified through a classification specific-gravity stoner, wheat scouring and wheat scrubbing are conducted, and magnetic separation is conducted again after classification is conducted through a cylinder induced draft. The novel process including three times of cleaning and three sections of wetting is adopted, screening is conducted four times, wheat scouting is conducted three times, brushing is conducted two times, and stone removing is conducted two times. The condition is detected according to the water concentration change after each section of water adding, the water adding amount in the next stage is adjusted in time, the ideal target water concentration is finally obtained, the influences of the raw material water concentration change are eliminated, the water concentration of processed clean wheat ranges from 15.3% to 15.5%, and the fluctuation range is 0.2%.

Description

The wheat grains for flour milling cleaning technology of flour mill

 

Technical field

The invention belongs to flour processing technique field, be specifically related to a kind of wheat grains for flour milling cleaning technology of flour mill.

 

Background technology

Flour mill of China tradition cleaning technology is that three sieve two-combats two de-stones one are washed wheat, along with social development, this cleaning technology has been not suitable with current requirement, wash very difficult solution of effluent problem that wheat link produces, the moisture control problem of wheat to be processed is also more and more difficult in addition, and especially the flour moisture of high-temperature high humidity season processing is difficult to control.The wheat light impurity that at present do mechanization operation of agricultural obtains is than sharply increasing in the past, and peasants are busy careful airing cleaning wheat also, causes the raw material impurity of flour mill's purchase large, moisture is high, and cleaning technology has been proposed to new requirement.

 

Summary of the invention

The problems referred to above that exist in order to overcome prior art field, the object of the invention is to, and a kind of wheat grains for flour milling cleaning technology of flour mill is provided, and the sewage that solves traditional wheat grains for flour milling cleaning technology generation is difficult to resolve certainly, the unmanageable problem of flour moisture of processing.

The wheat grains for flour milling cleaning technology of flour mill provided by the invention, it comprises following concrete steps: it comprises following concrete steps:

One, dirty wheat cleans: first will meet the wheat of flour crudy, successively through screening, selection by winnowing, de-stone, magnetic separation, thresh wheat, screen again, de-stone, magnetic separation more again, thresh wheat again, clean, finally by efficient dampener that to send into wheat wetting storehouse after water stand-by;

Two, wheat wetting: enter wheat wetting storehouse stand-by after efficient dampener water, after wheat wetting is suitable, the wheat of mill to be entered enters clean wheat clean and classify system;

Three, clean wheat cleaning: after magnetic separation, the classification of classification specific-gravity stoner, threshes wheat by the clean wheat after wheat wetting, wipes wheat, magnetic separation again after the classification of cylinder air suction device.

The wheat grains for flour milling cleaning technology of flour mill provided by the invention, its beneficial effect is, this technique is easily understood, adopted three cleanings, points three sections the new technology of water, totally four sieves three are made a call to two brush two de-stones, change the amount of water that detects every section of situation after adding water and adjust in time next section according to the moisture of raw material, finally obtain desirable target moisture, eliminated the impact that raw material moisture changes, processed clean wheat moisture between 15.3--15.5%, fluctuation range is 0.2%; Reasonably distributed cleaning technology according to the different situation of toughness of the different wheats of water degree, the wheat of cleaning is cleaner, and the clean wheat cleaning ash content contrast obtaining has reduced by 0.5% left and right.

 

Detailed description of the invention

Below in conjunction with embodiment, to the wheat grains for flour milling cleaning technology of flour mill provided by the invention, be described in detail.

Embodiment

The wheat grains for flour milling cleaning technology of the flour mill of the present embodiment, it comprises following concrete steps: it comprises following concrete steps:

One, dirty wheat cleans: first will meet the wheat of flour crudy, successively through screening, selection by winnowing, de-stone, magnetic separation, thresh wheat, screen again, de-stone, magnetic separation more again, thresh wheat again, clean, finally by efficient dampener that to send into wheat wetting storehouse after water stand-by;

Two, wheat wetting: enter wheat wetting storehouse stand-by after efficient dampener water, after wheat wetting is suitable, the wheat of mill to be entered enters clean wheat clean and classify system;

Three, clean wheat cleaning: after magnetic separation, the classification of classification specific-gravity stoner, threshes wheat by the clean wheat after wheat wetting, wipes wheat, magnetic separation again after the classification of cylinder air suction device.

First the wheat of flour crudy will be met, after removing assorted greatly and partial impurities and dust, raw grain receiving system enters dirty wheat storehouse stand-by, then the wheat of different cultivars is being entered to dirty wheat cleaning system after reasonably combined: send into efficient oscillating screen by dirty wheat and cycle winnowing device is removed large assorted, wheat ash waits after impurity, enter stone remover and remove stone, the impurity such as soil block, entering wheat scourers removes and enters efficient oscillating screen after earth in wheat and wheat ditch and wheat hair and clear up, enter again wheat scourers and efficient oscillating screen and carry out secondary cleaning to remove impurity, after water, efficient dampener enters wheat wetting storehouse stand-by, after wheat wetting is suitable, the wheat of mill to be entered enters clean wheat clean and classify system, first: clean wheat enters classification specific-gravity stoner for the first time, utilize the operation principle of classification specific-gravity stoner, its operation principle is to carry out work according to the weight of wheat self, when suitable air quantity blows while wearing compass screen surface, the wheat that weight is large can be attached to the lower floor of wheat stream, lightweight wheat can be attached to the upper strata of wheat stream, when all wheats are along with wheat flows to when lower trickling, the wheat that weight is large can flow out from nearest outlet, and lightweight wheat can flow out from outlet a little further, reach the object of lightweight wheat and heavy wheet grading, clean wheat enters classification specific-gravity stoner for the second time, principle is with for the first time, gradable go out the lightweight wheat of 30% left and right and the heavy wheat of 70% left and right, thereby reach the object of lightweight wheat and the thorough classification of heavy wheat, now heavy wheat is sent to the grinding of first flour mill, lightweight wheat is sent to Si road flour mill and grinds or enter after crushed byproduct or leftover bits and pieces, then clean wheat enters wheat scourers and removes earth and the wheat hair in wheat surface and wheat ditch, enter again rotary flat sieve, utilize the operation principle of rotary flat sieve, in effectively removing corresponding impurity, utilize lower floor's sieve aperture to 2.8 millimeter of adjusting to isolate the lightweight wheat of 4% left and right, now lightweight wheat enters byproduct or leftover bits and pieces after being sent to the flour mill grinding of Si road or pulverizing, and then enter the wheat machine wiped, wheat surface is processed again, remove wheat hair, the impurity such as dust, finally enter cylinder air suction separator, utilize its operation principle, isolate the lightweight wheat of 2% left and right, now lightweight wheat is sent to the flour mill grinding of Si road or enters after crushed byproduct or leftover bits and pieces, then clean wheat is carried through auger, entering clean wheat cabinet waits to grind, whole wheat cleaning operation finishes.

Claims (1)

1. a wheat grains for flour milling cleaning technology for flour mill, is characterized in that: it comprises following concrete steps:

One, dirty wheat cleans: first will meet the wheat of flour crudy, successively through screening, selection by winnowing, de-stone, magnetic separation, thresh wheat, screen again, de-stone, magnetic separation more again, thresh wheat again, clean, finally by efficient dampener that to send into wheat wetting storehouse after water stand-by;

Two, wheat wetting: enter wheat wetting storehouse stand-by after efficient dampener water, after wheat wetting is suitable, the wheat of mill to be entered enters clean wheat clean and classify system;

Three, clean wheat cleaning: after magnetic separation, the classification of classification specific-gravity stoner, threshes wheat by the clean wheat after wheat wetting, wipes wheat, magnetic separation again after the classification of cylinder air suction device.