CN104549610B

CN104549610B - Wheat milling technology free of repeated grinding

Info

Publication number: CN104549610B
Application number: CN201310483892.0A
Authority: CN
Inventors: 石红松; 周增然; 张索康; 张珣
Original assignee: HENAN SHIJIA FLOUR CO Ltd
Current assignee: HENAN SHIJIA FLOUR CO Ltd
Priority date: 2013-10-16
Filing date: 2013-10-16
Publication date: 2017-04-19
Anticipated expiration: 2033-10-16
Also published as: CN104549610A

Abstract

The invention relates to a wheat milling technology free of repeated grinding, which comprises the steps of cleaning, primary grinding, secondary grinding, purification and layered sieving. The layered sieving step is divided into three layers by improving operation standards and control parameters of the cleaning, primary grinding, secondary grinding, purification steps, and flour standards of the layers are strictly controlled, so that upper and middle layer flour can meet a quality requirement of flour and is directly packaged, and lower layer flour can mostly or fully meet the quality requirement of the flour and is partially or fully packaged; and a tee switching plate is arranged at the lower layer flour, so that when the lower layer flour fails to meet the quality requirement of the flour, the lower layer flour is guided to the sieving step via the switching plate. The technology can control the quality, is simple and flexible to operate, avoids stop and repeated grinding of the lower layer flour, improves the production efficiency and the product quality, increases the flour yield, lowers the production cost, saves a resource, and facilitates flour quality monitoring.

Description

A kind of wheat flour milling technique for exempting to repeat grinding

Technical field

The invention belongs to wheat deep process technology field, and in particular to a kind of wheat flour milling technique, more particularly to one kind is exempted from Repeat the wheat flour milling technique of grinding.

Background technology

Flour is wheat flour, is a kind of powder worn into by wheat, is the staple food of north of China most area.At present, With being on the increase for China human mortality, the market demand of flour is also being continuously increased, and the species and purposes of flour is more and more wider, The processing mode of flour is also more and more.In addition the improvement of people's living standards, majority pursue diet " nutrition, health, peace Entirely, it is various ", these just propose certain requirement to the crudy of flour, and powder processed is that wheat processing is mostly important and common Processing approach.The operation of wheat flour milling processing is usually cleaning, milling, clear powder, layering screen；Wherein it is layered screen usually to divide Three layer screen separates powder, because existing operation controls the restriction of standard, general only upper strata and middle level in layering screen science and engineering sequence Going out powder can meet the requirement of flour standard, pack packing after being directly separated out, and lower floor goes out powder and can not generally individually meet flour The requirement of standard, present widespread practice：One be by lower floor go out powder be sent directly into flour mill re-start grinding and layering screen Reason, which results in repetition grinding, serious waste resource, while also have impact on production efficiency and product quality；Two is straight Connect and lower floor is gone out into powder be mixed in powder stream, so adjust again it is necessary to shut down Yi Dan monitoring lower floor to go out when powder is not inconsistent standardization Whole, this has had a strong impact on normal production, causes production efficiency relatively low, and also add the difficulty of quality control, exists very big Product quality monitoring hidden danger.

The content of the invention

It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of flexible and convenient operation, production can be reduced Cost, and the wheat flour milling technique for exempting to repeat to grind of energy improve production efficiency, flour extraction and product quality.

The object of the present invention is achieved like this：

A kind of wheat flour milling technique for exempting to repeat grinding, it is comprised the following steps：

Step 1, cleaning：The dirty wheat that will be milled obtains net wheat through removal of impurities, wheat wetting process, controls the index of net wheat such as Under：Unit weight 785g/L, mass of 1000 kernel 45g, moisture 15.4%, dry ash divide 1.70%, dust and weed-trifles impurity 0.05%, Cereals impurity 0.2%, magnetic Property metal 0.03%, containing sand 0.02%；

Step 2, one-level milling：The net wheat that step 1 is obtained sends into shelling milling, and the break release for controlling a shelling is 18-20%, using the model W type screen clothes of No. 20, flour extraction rate is 1-2%, using the model X type screen clothes of No. 13；

Step 3, secondary grinding powder：The one-level flour bran that step 2 is obtained is sent into two shellings and is further milled, and controls two skins The break release of mill is 45-50%, and using the model W type screen clothes of No. 20, flour extraction rate is 4-6%, using the model X of No. 13 Type screen cloth；

Step 4, clear powder：The consumer's flour bran that step 3 is obtained sends into wheat flour purifier and isolates red dog, separates standard such as Under：, in the material of 560-1200 μm of part, recovery rate control is in 25%-35% for granularity；Thing of the granularity 280-560 μm of part Material, recovery rate is controlled in 50%-60%；, in the material of 132-280 μm of part, recovery rate control is in 50%-60% for granularity；

Step 5, layering screen：The red dog that step 4 is obtained sends into flour and collects auger, divides three layers and goes out powder, wherein on Aspect powder crosses the X type screen clothes of model 12-15, and middle level flour crosses the X type screen clothes of model 11-14, lower floor's flour The X type screen clothes of model 10-13 are crossed, and threeway plate is set in the exit of lower floor's flour, wherein meeting model 10 Number the part of X-type screen cloth retain 2-3%, remaining 97-98% carries out screen, meets model 11 into next procedure 3-5% is retained in the part of X type screen clothes, and remaining 95-97% carries out screen into next procedure.

The present invention has following positive effect：The present invention by the cleaning in wheat flour milling technique, one-level milling, two The improvement of the operation standard and control parameter of level milling and clear powder operation, layering screen is divided into three layers and goes out powder, and strictly Per layer of control goes out the standard of powder, and then realizes upper strata and middle level goes out powder and can meet the quality requirement of flour and directly packed, Lower floor go out powder can it is most of, even fully meet flour quality requirement and can also partly pack or pack completely, in addition, under Layer goes out setting threeway plate at powder, when lower floor goes out powder can not meet flour quality requirement, can be by plate directly by lower floor Go out powder and be oriented to next procedure screen, while quality is controlled it is simple to operate flexibly, it is to avoid shut down, it is to avoid lower floor goes out powder Repeat to grind, and then improve production efficiency, reduce production cost, while also improving flour extraction, saved resource, it is convenient The monitoring of flower characters, and then the quality of product is improve, be conducive to the development of enterprise.

Specific embodiment

With reference to embodiment, the present invention is described further.

Step 1, cleaning：The dirty wheat that will be milled obtains net wheat through removal of impurities, wheat wetting process, controls the index of net wheat such as Under：Unit weight 785g/L, mass of 1000 kernel 45g, moisture 15.4%, dry ash divide 1.70%, dust and weed-trifles impurity 0.05%, Cereals impurity 0.2%th, magnetic metal 0.03%, containing sand 0.02%；

The present invention is by the operation to the cleaning in wheat flour milling technique, one-level milling, secondary grinding powder and clear powder operation The improvement of standard and control parameter, is divided into layering screen three layers and goes out powder, and strictly controls per layer of standard for going out powder, Jin Ershi Upper strata is showed and middle level has gone out powder and can meet the quality requirement of flour and directly packed, lower floor goes out powder can be most of, even complete Meeting flour quality requirement can also partly pack or pack completely, in addition, go out setting threeway plate at powder in lower floor, instantly When layer goes out powder and can not meet flour quality requirement, lower floor directly can be gone out by powder by plate and be oriented to next procedure screen, controlled While quality processed it is simple to operate flexibly, it is to avoid shut down, it is to avoid lower floor goes out the repetition grinding of powder, and then improves production effect Rate, production cost is reduced, while also improving flour extraction, saved resource, facilitate the monitoring of flower characters, and then improved The quality of product, is conducive to the development of enterprise.By taking a workshop of Henan Shi Jia flour Co., Ltd as an example, using the present invention's After exempting to repeat the wheat flour milling technique of grinding, one ton of flour output increased per hour, power consumption per ton is counted according to current 57 degree Calculate, can save daily 1370 degree it is electric, 410,000 degree electric, equivalent RMB 300,000 or so can be saved every year, it is so great to save The operating cost of enterprise is saved, the profit of enterprise has been improve, has been conducive to the development of enterprise.

Claims

It is 1. a kind of to exempt from the wheat flour milling technique that repetition is ground, it is characterised in that：It is comprised the following steps：

Step 1, cleaning：The dirty wheat that will be milled obtains net wheat through removal of impurities, wheat wetting process, and the index for controlling net wheat is as follows：Hold Weight 785g/L, mass of 1000 kernel 45g, moisture 15.4%, dry ash divide 1.70%, dust and weed-trifles impurity 0.05%, Cereals impurity 0.2%, magnetic metal 0.03%th, containing sand 0.02%；

Step 2, one-level milling：The net wheat that step 1 is obtained sends into shelling milling, and the break release for controlling a shelling is 18- 20%, using the model W type screen clothes of No. 20, flour extraction rate is 1-2%, using the model X type screen clothes of No. 13；

Step 3, secondary grinding powder：The one-level flour bran that step 2 is obtained is sent into two shellings and is further milled, and controls two shellings Break release is 45-50%, and using the model W type screen clothes of No. 20, flour extraction rate is 4-6%, using the model X types sieve of No. 13 Net；

Step 4, clear powder：The consumer's flour bran that step 3 is obtained sends into wheat flour purifier and isolates red dog, separates standard as follows：Grain The material 560-1200 μm of part is spent, recovery rate is controlled in 25%-35%；Granularity is carried in the material of 280-560 μm of part Take rate to control in 50%-60%；, in the material of 132-280 μm of part, recovery rate control is in 50%-60% for granularity；

Step 5, layering screen：The red dog that step 4 is obtained sends into flour and collects auger, divides three layers and goes out powder, wherein face layer Powder crosses the X type screen clothes of model 12-15, and middle level flour crosses the X type screen clothes of model 11-14, and lower floor's flour crosses type Number for the X type screen clothes of No. 10-13, and threeway plate is set in the exit of lower floor's flour, wherein meeting model 10 2-3% is retained in the part of X-type screen cloth, and remaining 97-98% carries out screen, meets the X types of model 11 into next procedure 3-5% is retained in the part of screen cloth, and remaining 95-97% carries out screen into next procedure.