CN113145203A - Processing technology of selected rice - Google Patents
Processing technology of selected rice Download PDFInfo
- Publication number
- CN113145203A CN113145203A CN202110100761.4A CN202110100761A CN113145203A CN 113145203 A CN113145203 A CN 113145203A CN 202110100761 A CN202110100761 A CN 202110100761A CN 113145203 A CN113145203 A CN 113145203A
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- China
- Prior art keywords
- rice
- polishing
- separation
- machine
- nanometer water
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Classifications
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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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- 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
- B02B1/00—Preparing grain for milling or like processes
- B02B1/02—Dry treatment
-
- 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
- B02B1/00—Preparing grain for milling or like processes
- B02B1/04—Wet treatment, e.g. washing, wetting, softening
-
- 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
- B02B1/00—Preparing grain for milling or like processes
- B02B1/08—Conditioning grain with respect to temperature or water content
-
- 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
- B02B3/00—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
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- Cereal-Derived Products (AREA)
- Adjustment And Processing Of Grains (AREA)
Abstract
The invention provides a processing technology of selected rice, which comprises the following steps: removing impurities by air separation, drying by hot air, air separation for the second time, magnetic separation and cleaning, hulling, separating rough rice, fine grinding in multiple stages, polishing rice, screening and grading and packaging; compared with the existing rice processing technology, the rice polishing machine is internally provided with the nanometer water ion generator in the polishing step, the nanometer water ion generator can generate nanometer water ions, a colloidal layer can be formed by combining starch on the surface of rice grains well and quickly, the rice quality is improved, the polishing time is also shortened, the loss of rice nutrition and the possibility of rice grain breakage caused by polishing are reduced, and the rice polishing machine is provided with the shot blasting with the silver ion coating, can be matched with the strong oxidizing property of the nanometer water ions generated by the nanometer water ion generator to accelerate the release speed of the silver ions to sterilize and disinfect the rice in the polishing process, saves the subsequent sterilization and disinfection steps, and has good development prospect.
Description
Technical Field
The invention relates to the field of rice processing, in particular to a processing technology of selected rice.
Background
Rice is one of staple foods for residents in China, and the processing method of the rice is continuously developed along with the improvement of the living standard of the residents. The existing rice processing technology mainly comprises the steps of impurity removal, drying, rice hulling, rice husking separation, rice milling, polishing, color sorting and the like.
Among them, rice polishing is a topic which has been considered to be popular. The polished rice is glittering and translucent in color and luster, the storage performance of the rice is improved, the rice consists of rice husks, endosperm and germs which respectively account for 13-15%, 83-87% and 2-3% of the total amount, the rice husks are the outermost layers of the rice and mainly contain cellulose and hemicellulose, and contain a certain amount of protein, fat, vitamins and more inorganic salts, all the nutrients such as phosphorus, B family and inorganic salts are seriously lost in the polishing process of the rice, and the aleurone layer is between the rice husks and the endosperm and contains more phosphorus, rich B family and inorganic salts, so that the nutrients such as the phosphorus, the B family and the inorganic salts of the polished rice are greatly reduced in the polishing process, and the waste of the nutrients is caused.
Disclosure of Invention
The invention aims to provide a processing technology of selected rice, which reduces the nutrition loss of the rice in the polishing process.
In order to achieve the purpose, the invention provides the following technical scheme:
a processing technology of selected rice comprises the following steps:
s1 air separation impurity removal: guiding the collected rice into a winnowing machine, and removing weeds and empty shells in the rice through the winnowing machine;
s2 hot air drying: drying the unhulled paddy by a hot air dryer until the water content of the paddy is lower than 20%, and controlling the temperature of hot air at 35-40 ℃;
s3 secondary air separation: the dried paddy is guided into a winnowing machine again to carry out winnowing and impurity removal on the sand, stone and soil particles in the paddy;
s4 magnetic separation cleaning: introducing the rice subjected to secondary air separation into a magnetic separator for magnetic separation for 60s to remove iron-containing impurities in the rice, wherein the magnetic separation strength of the magnetic separator is 250-350 mt;
s5 hulling rice: soaking the magnetically-separated rice in 50 deg.C hot water for 3min, taking out, oven drying until the water content is less than 15%, and removing rice hull in a rice huller;
s6 separating the rough rice: separating the rough rice from the preliminarily hulled rice by using a rough rice separator;
s7 multistage fine grinding: feeding the brown rice after the brown rice separation into a rice mill for grading and carrying out multiple times of fine grinding, and ensuring the temperature of the brown rice to be maintained at 25-28 ℃ in the fine grinding process;
s8 rice polishing: feeding the rice after milling into a rice polishing machine, and polishing to remove floating bran on the surface of the rice;
s9 color screening: guiding the polished rice into a screening machine and a color sorter in sequence, and screening broken rice and removing heterochromatic rice grains;
s10 grading packaging: and grading the screened rice, weighing, packaging and storing in a rice warehouse.
As a further scheme of the invention: the rice in the hot air dryer in the step S2 is spread to a thickness of 2.5-5cm and turned over every 10 min.
As a further scheme of the invention: in the step S8, shot blasting particles with the diameter of 1cm are added into the polishing machine to assist polishing in rice polishing.
As a further scheme of the invention: the shot blasting surface is plated with a silver ion plating layer.
As a further scheme of the invention: in the step S8, the rice grains are mixed with water at a ratio of 100:1, and a nanometer water ion generator is arranged in the polishing machine.
Advantageous effects
1. The polishing machine in the rice polishing step is internally provided with the nano water ion generator, the nano water ion generator can generate hydroxyl radicals wrapped by water molecules, the basic structures of most fungi and bacteria are damaged by utilizing the strong oxidizing property of the hydroxyl radicals, harmful microorganisms are directly degraded into water and carbon dioxide, the sterilization effect is achieved, the diameter of the water ions generated by the nano water ion generator is less than 20nm and far smaller than 6000nm of steam microparticles in the air, the starch on the surfaces of rice grains can be combined well and quickly to form a colloidal layer, the rice grade is improved, the polishing time is shortened, and the loss of rice nutrition and the possibility of rice grain breakage caused by polishing are reduced.
2. The shot blasting with the silver ion plating layer plated on the surface is added in the rice polishing process, the rice polishing efficiency is accelerated by adding the shot blasting, the rice is less damaged by a smooth and regular surface structure of the shot blasting in the polishing process, the broken rice rate is reduced, silver ions on the surface of the silver ion plating layer can release the silver ions in the polishing process, the silver ions are broken and inactivated in a period of permeating into a cell structure of bacteria, the rice is sterilized and disinfected, the subsequent sterilization and disinfection steps are omitted, and the strong oxidizing property of nano water ions generated by a nano water ion generator arranged in the polishing machine can accelerate the release speed of the silver ions in the shot blasting silver ion plating layer and improve the disinfection effect.
3. The invention has two winnowing processes in the treatment of the rice, which are respectively used for separating weeds, hollow shells, sand stones and soil particles mixed in the rice, a drying process is added between the two winnowing processes, and the difference between the rice and the sedimentation final speed of a corresponding screened object in the two winnowing processes is maximized by using the change of the rice weight before and after drying and the change of the rice weight when different moisture contents are utilized, so that the winnowing effect is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the embodiment of the invention, the processing technology of the selected rice comprises the following steps:
s1 air separation impurity removal: guiding the collected rice into a winnowing machine, and removing weeds and empty shells in the rice through the winnowing machine;
s2 hot air drying: drying the unhulled paddy by a hot air dryer until the water content of the paddy is lower than 20%, and controlling the temperature of hot air at 35-40 ℃;
s3 secondary air separation: the dried paddy is guided into a winnowing machine again to carry out winnowing and impurity removal on the sand, stone and soil particles in the paddy;
s4 magnetic separation cleaning: introducing the rice subjected to secondary air separation into a magnetic separator for magnetic separation for 60s to remove iron-containing impurities in the rice, wherein the magnetic separation strength of the magnetic separator is 250-350 mt;
s5 hulling rice: soaking the magnetically-separated rice in 50 deg.C hot water for 3min, taking out, oven drying until the water content is less than 15%, and removing rice hull in a rice huller;
s6 separating the rough rice: separating the rough rice from the preliminarily hulled rice by using a rough rice separator;
s7 multistage fine grinding: feeding the brown rice after the brown rice separation into a rice mill for grading and carrying out multiple times of fine grinding, and ensuring the temperature of the brown rice to be maintained at 25-28 ℃ in the fine grinding process;
s8 rice polishing: feeding the rice after milling into a rice polishing machine, and polishing to remove floating bran on the surface of the rice;
s9 color screening: guiding the polished rice into a screening machine and a color sorter in sequence, and screening broken rice and removing heterochromatic rice grains;
s10 grading packaging: and grading the screened rice, weighing, packaging and storing in a rice warehouse.
Wherein: the spreading thickness of the unhusked rice in the hot air dryer in the step S2 is 2.5-5cm, the unhusked rice is turned once every 10min, the spreading thickness of the unhusked rice and the turning of the unhusked rice are controlled to improve the drying uniformity, and the difference of the water content of the unhusked rice at each position is prevented.
Wherein: and S8, adding shot blasting particles with the diameter of 1cm into the polishing machine to assist polishing in the rice polishing process, adding shot blasting to accelerate the polishing efficiency of the rice, and simultaneously, the shot blasting has a smooth and regular surface structure and less damage to the rice in the polishing process, so that the broken rice rate is reduced.
Wherein: the shot blasting surface is plated with a silver ion plating layer, silver ions on the surface of the silver ion plating layer can release silver ions in the polishing process, the silver ions penetrate into a cell structure of bacteria and break and are inactivated in a period, the rice sterilization and disinfection effect is achieved, the subsequent sterilization and disinfection steps are omitted, the strong oxidizing property of nano water ions generated by a nano water ion generator arranged in the polishing machine can also accelerate the release speed of the silver ions in the shot blasting silver ion plating layer, and the disinfection effect is improved.
Wherein: the water adding proportion of the rice grains in the step S8 rice polishing is 100:1, a nano water ion generator is additionally arranged in the polishing machine and can generate hydroxyl radicals wrapped by water molecules, the basic structures of most fungi and bacteria are destroyed by utilizing the strong oxidizing property of the hydroxyl radicals, harmful microorganisms are directly degraded into water and carbon dioxide, the sterilization effect is achieved, the diameter of the water ions generated by the nano water ion generator is less than 20nm and far smaller than 6000nm of steam microparticles in the air, the starch on the surfaces of the rice grains can be combined well and quickly to form a colloidal layer, the rice phase is improved, the polishing time is shortened, and the loss of rice nutrition and the possibility of rice grain breakage caused by polishing are reduced.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (5)
1. The processing technology of the selected rice is characterized by comprising the following steps:
s1 air separation impurity removal: guiding the collected rice into a winnowing machine, and removing weeds and empty shells in the rice through the winnowing machine;
s2 hot air drying: drying the unhulled paddy by a hot air dryer until the water content of the paddy is lower than 20%, and controlling the temperature of hot air at 35-40 ℃;
s3 secondary air separation: the dried paddy is guided into a winnowing machine again to carry out winnowing and impurity removal on the sand, stone and soil particles in the paddy;
s4 magnetic separation cleaning: introducing the rice subjected to secondary air separation into a magnetic separator for magnetic separation for 60s to remove iron-containing impurities in the rice, wherein the magnetic separation strength of the magnetic separator is 250-350 mt;
s5 hulling rice: soaking the magnetically-separated rice in 50 deg.C hot water for 3min, taking out, oven drying until the water content is less than 15%, and removing rice hull in a rice huller;
s6 separating the rough rice: separating the rough rice from the preliminarily hulled rice by using a rough rice separator;
s7 multistage fine grinding: feeding the brown rice after the brown rice separation into a rice mill for grading and carrying out multiple times of fine grinding, and ensuring the temperature of the brown rice to be maintained at 25-28 ℃ in the fine grinding process;
s8 rice polishing: feeding the rice after milling into a rice polishing machine, and polishing to remove floating bran on the surface of the rice;
s9 color screening: guiding the polished rice into a screening machine and a color sorter in sequence, and screening broken rice and removing heterochromatic rice grains;
s10 grading packaging: and grading the screened rice, weighing, packaging and storing in a rice warehouse.
2. The process of processing selected rice as claimed in claim 1, wherein: the rice in the hot air dryer in the step S2 is spread to a thickness of 2.5-5cm and turned over every 10 min.
3. The process of processing selected rice as claimed in claim 1, wherein: in the step S8, shot blasting particles with the diameter of 1cm are added into the polishing machine to assist polishing in rice polishing.
4. The process of processing selected rice as claimed in claim 3, wherein: the shot blasting surface is plated with a silver ion plating layer.
5. The process of processing selected rice as claimed in claim 1, wherein: in the step S8, the rice grains are mixed with water at a ratio of 100:1, and a nanometer water ion generator is arranged in the polishing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110100761.4A CN113145203A (en) | 2021-01-26 | 2021-01-26 | Processing technology of selected rice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110100761.4A CN113145203A (en) | 2021-01-26 | 2021-01-26 | Processing technology of selected rice |
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| Publication Number | Publication Date |
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| CN113145203A true CN113145203A (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110100761.4A Pending CN113145203A (en) | 2021-01-26 | 2021-01-26 | Processing technology of selected rice |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| US20100139505A1 (en) * | 2007-05-11 | 2010-06-10 | Tobias Graf | Component for a machine used for processing foods |
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2021
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| US20120052105A1 (en) * | 2009-05-13 | 2012-03-01 | Anatoly Ivanovich Grigoriev | Nanostructural composition of biocide and process of obtaining nanostructural biocide nanocomposition |
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| WO2021211004A1 (en) * | 2020-04-17 | 2021-10-21 | Нияз Зайнуллович ХИСМЕТОВ | Method for processing grain to produce food products |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Application publication date: 20210723 |