CN112452388A - Rice fine processing technology - Google Patents
Rice fine processing technology Download PDFInfo
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- CN112452388A CN112452388A CN202011188303.2A CN202011188303A CN112452388A CN 112452388 A CN112452388 A CN 112452388A CN 202011188303 A CN202011188303 A CN 202011188303A CN 112452388 A CN112452388 A CN 112452388A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
- B02B5/00—Grain treatment not otherwise provided for
- B02B5/02—Combined processes
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Abstract
The invention discloses a rice fine processing technology, relates to the field of food processing, and aims at solving the problems that the existing processing technology is easy to cause the loss of rice nutrient substances, low in yield, easy to generate raised dust and incapable of achieving the effect of the fine processing technology, the following scheme is proposed, and the rice fine processing technology comprises the following steps: s1, selecting: selecting organic rice harvested in the same year, and removing light and low-quality rice grains; s2, removing impurities: placing the selected paddy into a wind raising machine, removing weeds and dry and flat paddy in the paddy, and then carrying out vibrating screen leaking to remove sand and stones in the paddy; s3, magnetic separation: putting the paddy without impurities into a magnetic separator, and completely removing iron-containing impurities mixed in the paddy; s4, cleaning: and washing the magnetically-separated rice with flowing warm water. The invention has novel structure, less loss of nutrient substances of rice, low broken rice rate, high yield, good production and processing environment, high food sanitation quality and good finish machining process effect.
Description
Technical Field
The invention relates to the field of food processing, in particular to a rice fine processing technology.
Background
The rice has higher nutritive value, is easy to digest and absorb, is one of main grains eaten by people in China, people in southern China generally eat the rice as staple food, and the traditional rice processing technology comprises the working procedures of cleaning, rice hulling, rice milling, polishing, grading, color sorting, packaging and the like, and tends to be more and more automatic along with the improvement of the level of mechanization.
The rice processing technology used in the current market still has defects in the actual production process, easily causes the loss of rice nutrient substances in the polishing process, has high broken rice rate, cost waste and low yield, easily generates dust in the production and processing process, has low food sanitation quality, and cannot achieve the effect of the fine processing technology, so that the fine processing technology of the rice is provided for solving the problems.
Disclosure of Invention
The rice fine processing technology provided by the invention solves the problems that the existing processing technology is easy to cause the loss of rice nutrient substances, low in yield, easy to generate dust and incapable of achieving the effect of the fine processing technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rice fine processing technology comprises the following steps:
s1, selecting: selecting organic rice harvested in the same year, and removing light and low-quality rice grains;
s2, removing impurities: placing the selected paddy into a wind raising machine, removing weeds and dry and flat paddy in the paddy, and then carrying out vibrating screen leaking to remove sand and stones in the paddy;
s3, magnetic separation: putting the paddy without impurities into a magnetic separator, and completely removing iron-containing impurities mixed in the paddy;
s4, cleaning: washing the magnetically-separated rice with flowing warm water, and drying the rice in a natural air drying or cold air drying mode after washing;
s5, shelling: putting the washed and dried paddy into a paddy huller, wherein the paddy huller is used for milling and hulling the paddy to separate the paddy from coarse paddy, then screening the unhulled paddy, and sending the unhulled paddy into the paddy huller again for hulling again;
s6, whitening: putting the hulled rice into a rice mill, and whitening the rice by the rice mill to enable germs of the rice and rice bran attached to the rice to be adsorbed and separated from the rice grains under the negative pressure condition;
s7, soaking: soaking the milled rice by using NaHCO3 solution;
s8, secondary cleaning: washing the soaked rice with flowing warm water, and drying the rice in a natural drying, cold air drying or microwave drying mode after washing;
s9, polishing: putting the rice after secondary cleaning and drying into a polishing machine, polishing the rice by the polishing machine, and removing chaff and impurities adhered to the surface of the rice to enable starch on the surface of the rice to form a colloidal layer which is glittering and translucent;
s10, screening: grading and screening the polished rice to remove broken rice mixed in the rice;
s11, color selection: classifying the classified rice and putting the classified rice into a color selector, wherein the color selector is used for performing color selection on the rice and removing different color grains such as brown rice, yellow rice and the like and white rice grains;
s12, dust removal: putting the rice after color sorting into a dust remover, wherein the dust remover is used for removing dust from the rice to remove broken rice floating dust on the surface of the rice;
s13, sterilization: putting the rice after dust removal into a conveyor belt, conveying the rice into an ultraviolet chamber through the conveyor belt, and performing ultraviolet sterilization;
s14, packaging and warehousing: weighing and subpackaging the sterilized rice, performing vacuum treatment, and warehousing and storing the packaged rice.
Preferably, the temperature of the warm water in the S4 is 35-55 ℃, and the water content of the dried rice is 15-25%.
Preferably, the rice grain fraction of the next step after the grain fraction in S5 is 97% or more.
Preferably, in the S6, cold air is input into the rice mill through an air delivery pipe in the rice milling process, so that the temperature of the rice is kept between 20 and 26 ℃ in the rice milling process, and the removal rate of germs and rice bran is over 99 percent.
Preferably, the temperature of the NaHCO3 solution in the S7 is 50-60 ℃, and the soaking time is 9-11 min.
Preferably, the temperature of the warm water in the S8 is 35-55 ℃, the temperature of microwave drying is 40-50 ℃, and the water content of the dried rice is 12-15%.
Preferably, the color separator heterochrosis in S11 is kept within 1%.
Preferably, the warehousing storage time of the S14 is controlled within 240 days, the storage temperature is controlled within 0-15 ℃, and the overall storage temperature difference is not more than 5 ℃.
The invention has the beneficial effects that:
1. the rice after shelling and whitening is put into NaHCO3 solution for soaking, so that the viscosity of a starch layer on the surface of the rice is increased, the toughness of the rice is increased, the loss of rice nutrients in the polishing process is reduced, the nutrients in a rice skin layer are preserved, the broken rice rate is reduced, the cost waste is avoided, and the yield is improved.
2. Through rinsing the drying to the corn, avoid impurity to get into in rice huller and the rice mill, reduce mechanical equipment by the hidden danger of dust corruption, extension machinery life optimizes the production and processing environment, through carrying out secondary cleaning, dust removal and disinfecting to the rice, keeps the rice clean, avoids dust debris to mix into the packing, avoids bacterial growing, guarantees food sanitation quality, optimizes finish machining technological effect.
In conclusion, the fine processing technology has the advantages of less loss of nutrient substances of the rice, low broken rice rate, high yield, good production and processing environment, high food sanitation quality and good fine processing technology effect.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example 1:
a rice fine processing technology comprises the following steps:
s1, selecting: selecting organic rice harvested in the same year, and removing light and low-quality rice grains;
s2, removing impurities: placing the selected paddy into a wind raising machine, removing weeds and dry and flat paddy in the paddy, and then carrying out vibrating screen leaking to remove sand and stones in the paddy;
s3, magnetic separation: putting the paddy without impurities into a magnetic separator, and completely removing iron-containing impurities mixed in the paddy;
s4, cleaning: washing the magnetically-separated paddy with flowing warm water, and drying the paddy in a natural drying mode after washing;
s5, shelling: putting the washed and dried paddy into a paddy huller, wherein the paddy huller is used for milling and hulling the paddy to separate the paddy from coarse paddy, then screening the unhulled paddy, and sending the unhulled paddy into the paddy huller again for hulling again;
s6, whitening: putting the hulled rice into a rice mill, and whitening the rice by the rice mill to enable germs of the rice and rice bran attached to the rice to be adsorbed and separated from the rice grains under the negative pressure condition;
s7, soaking: soaking the milled rice by using NaHCO3 solution;
s8, secondary cleaning: washing the soaked rice with flowing warm water, and drying the rice in a natural drying mode after washing;
s9, polishing: putting the rice after secondary cleaning and drying into a polishing machine, polishing the rice by the polishing machine, and removing chaff and impurities adhered to the surface of the rice to enable starch on the surface of the rice to form a colloidal layer which is glittering and translucent;
s10, screening: grading and screening the polished rice to remove broken rice mixed in the rice;
s11, color selection: classifying the classified rice and putting the classified rice into a color selector, wherein the color selector is used for performing color selection on the rice and removing different color grains such as brown rice, yellow rice and the like and white rice grains;
s12, dust removal: putting the rice after color sorting into a dust remover, wherein the dust remover is used for removing dust from the rice to remove broken rice floating dust on the surface of the rice;
s13, sterilization: putting the rice after dust removal into a conveyor belt, conveying the rice into an ultraviolet chamber through the conveyor belt, and performing ultraviolet sterilization;
s14, packaging and warehousing: weighing and subpackaging the sterilized rice, performing vacuum treatment, and warehousing and storing the packaged rice.
The temperature of the warm water in the S4 is 40 ℃, and the water content of the dried rice is 15%.
The rice grain separating rate of the next step after the grain separation in the step S5 reaches more than 97%.
And in the S6, cold air is input into the rice mill through an air conveying pipe in the rice milling process, so that the temperature of rice is kept at 20 ℃ in the rice milling process, and the removal rate of germs and rice bran is over 99 percent.
The NaHCO3 solution in the S7 is at 50 ℃, and the soaking time is 9 min.
The temperature of the warm water in the S8 is 35 ℃, and the water content of the dried rice is 12%.
The color selector heterochrosis in the S11 is kept within 1 percent.
And the warehousing storage time of the S14 is controlled within 240 days, and the storage temperature is controlled to be 0-5 ℃.
Example 2:
a rice fine processing technology comprises the following steps:
s1, selecting: selecting organic rice harvested in the same year, and removing light and low-quality rice grains;
s2, removing impurities: placing the selected paddy into a wind raising machine, removing weeds and dry and flat paddy in the paddy, and then carrying out vibrating screen leaking to remove sand and stones in the paddy;
s3, magnetic separation: putting the paddy without impurities into a magnetic separator, and completely removing iron-containing impurities mixed in the paddy;
s4, cleaning: washing the magnetically-separated rice with flowing warm water, and drying the rice in a cold air drying mode after washing;
s5, shelling: putting the washed and dried paddy into a paddy huller, wherein the paddy huller is used for milling and hulling the paddy to separate the paddy from coarse paddy, then screening the unhulled paddy, and sending the unhulled paddy into the paddy huller again for hulling again;
s6, whitening: putting the hulled rice into a rice mill, and whitening the rice by the rice mill to enable germs of the rice and rice bran attached to the rice to be adsorbed and separated from the rice grains under the negative pressure condition;
s7, soaking: soaking the milled rice by using NaHCO3 solution;
s8, secondary cleaning: washing the soaked rice with flowing warm water, and drying the rice in a cold air drying mode after washing;
s9, polishing: putting the rice after secondary cleaning and drying into a polishing machine, polishing the rice by the polishing machine, and removing chaff and impurities adhered to the surface of the rice to enable starch on the surface of the rice to form a colloidal layer which is glittering and translucent;
s10, screening: grading and screening the polished rice to remove broken rice mixed in the rice;
s11, color selection: classifying the classified rice and putting the classified rice into a color selector, wherein the color selector is used for performing color selection on the rice and removing different color grains such as brown rice, yellow rice and the like and white rice grains;
s12, dust removal: putting the rice after color sorting into a dust remover, wherein the dust remover is used for removing dust from the rice to remove broken rice floating dust on the surface of the rice;
s13, sterilization: putting the rice after dust removal into a conveyor belt, conveying the rice into an ultraviolet chamber through the conveyor belt, and performing ultraviolet sterilization;
s14, packaging and warehousing: weighing and subpackaging the sterilized rice, performing vacuum treatment, and warehousing and storing the packaged rice.
The temperature of the warm water in the S4 is 45 ℃, and the water content of the dried rice is 20%.
The rice grain separating rate of the next step after the grain separation in the step S5 reaches more than 97%.
And in the S6, cold air is input into the rice mill through an air conveying pipe in the rice milling process, so that the temperature of rice is kept at 23 ℃ in the rice milling process, and the removal rate of germs and rice bran is over 99 percent.
The temperature of NaHCO3 solution in the S7 is 55 ℃, and the soaking time is 10 min.
The temperature of the warm water in the S8 is 40 ℃, and the water content of the dried rice is 13%.
The color selector heterochrosis in the S11 is kept within 1 percent.
And the warehousing storage time of the S14 is controlled within 240 days, and the storage temperature is controlled to be 5-10 ℃.
Example 3:
a rice fine processing technology comprises the following steps:
s1, selecting: selecting organic rice harvested in the same year, and removing light and low-quality rice grains;
s2, removing impurities: placing the selected paddy into a wind raising machine, removing weeds and dry and flat paddy in the paddy, and then carrying out vibrating screen leaking to remove sand and stones in the paddy;
s3, magnetic separation: putting the paddy without impurities into a magnetic separator, and completely removing iron-containing impurities mixed in the paddy;
s4, cleaning: washing the magnetically-separated rice with flowing warm water, and drying the rice in a cold air drying mode after washing;
s5, shelling: putting the washed and dried paddy into a paddy huller, wherein the paddy huller is used for milling and hulling the paddy to separate the paddy from coarse paddy, then screening the unhulled paddy, and sending the unhulled paddy into the paddy huller again for hulling again;
s6, whitening: putting the hulled rice into a rice mill, and whitening the rice by the rice mill to enable germs of the rice and rice bran attached to the rice to be adsorbed and separated from the rice grains under the negative pressure condition;
s7, soaking: soaking the milled rice by using NaHCO3 solution;
s8, secondary cleaning: washing the soaked rice with flowing warm water, and drying the rice in a microwave drying mode after washing;
s9, polishing: putting the rice after secondary cleaning and drying into a polishing machine, polishing the rice by the polishing machine, and removing chaff and impurities adhered to the surface of the rice to enable starch on the surface of the rice to form a colloidal layer which is glittering and translucent;
s10, screening: grading and screening the polished rice to remove broken rice mixed in the rice;
s11, color selection: classifying the classified rice and putting the classified rice into a color selector, wherein the color selector is used for performing color selection on the rice and removing different color grains such as brown rice, yellow rice and the like and white rice grains;
s12, dust removal: putting the rice after color sorting into a dust remover, wherein the dust remover is used for removing dust from the rice to remove broken rice floating dust on the surface of the rice;
s13, sterilization: putting the rice after dust removal into a conveyor belt, conveying the rice into an ultraviolet chamber through the conveyor belt, and performing ultraviolet sterilization;
s14, packaging and warehousing: weighing and subpackaging the sterilized rice, performing vacuum treatment, and warehousing and storing the packaged rice.
The temperature of the warm water in the S4 is 55 ℃, and the water content of the dried rice is 25%.
The rice grain separating rate of the next step after the grain separation in the step S5 reaches more than 97%.
And in the S6, cold air is input into the rice mill through an air conveying pipe in the rice milling process, so that the temperature of rice is kept at 26 ℃ in the rice milling process, and the removal rate of germs and rice bran is over 99 percent.
The NaHCO3 solution in the S7 is at 60 ℃, and the soaking time is 11 min.
The temperature of the warm water in the S8 is 55 ℃, the temperature of microwave drying is 50 ℃, and the water content of the dried rice is 15%.
The color selector heterochrosis in the S11 is kept within 1 percent.
And the warehousing storage time of the S14 is controlled within 240 days, and the storage temperature is controlled at 10-15 ℃.
In conclusion, the fine processing technology has the advantages of less loss of nutrient substances of the rice, low broken rice rate, high yield, good production and processing environment, high food sanitation quality and good fine processing technology effect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A rice fine processing technology comprises the following steps:
s1, selecting: selecting organic rice harvested in the same year, and removing light and low-quality rice grains;
s2, removing impurities: placing the selected paddy into a wind raising machine, removing weeds and dry and flat paddy in the paddy, and then carrying out vibrating screen leaking to remove sand and stones in the paddy;
s3, magnetic separation: putting the paddy without impurities into a magnetic separator, and completely removing iron-containing impurities mixed in the paddy;
s4, cleaning: washing the magnetically-separated rice with flowing warm water, and drying the rice in a natural air drying or cold air drying mode after washing;
s5, shelling: putting the washed and dried paddy into a paddy huller, wherein the paddy huller is used for milling and hulling the paddy to separate the paddy from coarse paddy, then screening the unhulled paddy, and sending the unhulled paddy into the paddy huller again for hulling again;
s6, whitening: putting the hulled rice into a rice mill, and whitening the rice by the rice mill to enable germs of the rice and rice bran attached to the rice to be adsorbed and separated from the rice grains under the negative pressure condition;
s7, soaking: soaking the milled rice by using NaHCO3 solution;
s8, secondary cleaning: washing the soaked rice with flowing warm water, and drying the rice in a natural drying, cold air drying or microwave drying mode after washing;
s9, polishing: putting the rice after secondary cleaning and drying into a polishing machine, polishing the rice by the polishing machine, and removing chaff and impurities adhered to the surface of the rice to enable starch on the surface of the rice to form a colloidal layer which is glittering and translucent;
s10, screening: grading and screening the polished rice to remove broken rice mixed in the rice;
s11, color selection: classifying the classified rice and putting the classified rice into a color selector, wherein the color selector is used for performing color selection on the rice and removing different color grains such as brown rice, yellow rice and the like and white rice grains;
s12, dust removal: putting the rice after color sorting into a dust remover, wherein the dust remover is used for removing dust from the rice to remove broken rice floating dust on the surface of the rice;
s13, sterilization: putting the rice after dust removal into a conveyor belt, conveying the rice into an ultraviolet chamber through the conveyor belt, and performing ultraviolet sterilization;
s14, packaging and warehousing: weighing and subpackaging the sterilized rice, performing vacuum treatment, and warehousing and storing the packaged rice.
2. A rice finishing process as claimed in claim 1, wherein the temperature of the warm water in S4 is 35-55 deg.C, and the water content of the dried rice is 15-25%.
3. A rice finishing process as claimed in claim 1, wherein a rice grain roughness separation rate of the next step after grain roughness separation in S5 is more than 97%.
4. A rice finishing process as claimed in claim 1, wherein the rice mill of S6 is used to introduce cold air through air duct during milling to maintain the temperature of rice at 20-26 deg.C and remove embryo bud and rice bran at more than 99%.
5. The rice finishing process of claim 1, wherein the NaHCO3 solution in S7 is at 50-60 ℃ and the soaking time is 9-11 min.
6. A rice finishing process as claimed in claim 1, wherein the warm water in S8 is at a temperature of 35-55 deg.C, the microwave drying temperature is at 40-50 deg.C, and the water content of the dried rice is 12-15%.
7. The rice finishing process of claim 1, wherein the color selector color ratio of S11 is maintained within 1%.
8. The rice finishing process as claimed in claim 1, wherein the warehousing storage time of S14 is controlled within 240 days, the storage temperature is controlled within 0-15 ℃, and the overall storage temperature difference is not more than 5 ℃.
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Cited By (3)
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|---|---|---|---|---|
| CN113171818A (en) * | 2021-06-09 | 2021-07-27 | 湖北楚民发农业科技有限公司 | Fine processing production process of high-quality rice with fine dust removal |
| CN114100726A (en) * | 2021-11-26 | 2022-03-01 | 湖南益芝通生物科技有限公司 | Selenium-rich rice mildew-proof cleaning and drying processing technology |
| CN116196998A (en) * | 2023-03-29 | 2023-06-02 | 麻城市穗丰生态农业发展有限公司 | Treatment method for processing paddy |
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