Green food rice processing operating procedures

2008-10-6 8:47:49

In order to make the 500,000-acre large-scale standardized green food rice base produce All the raw materials are carefully processed, and each process meets the relevant requirements of the Green Food Rice Production and Processing Technical Operating Procedures. The company has specially formulated the "Shuangjie" brand green food rice processing operating procedures. Employees must strictly abide by it to ensure that product quality meets NY /T419-2000 standard.

1. Raw grain procurement standards

(1) Regional requirements: Raw grain must come from our company’s green food production base and be produced in accordance with green food production technical regulations.

(2) Variety requirements: The raw grain varieties are "Kongyu 131", "Mudanjiang 19", "Suijing 4" and other high-quality varieties provided by the company that are suitable for regional production and cultivation and meet the requirements of green food.

(3) Quality requirements: 1. Moisture content; the moisture content does not exceed 15, and the autumn purchase does not exceed 17; 2. Clarity: impurities and broken grains do not exceed 1, and there is no mold; 3. Purity: the variety purity must be above 95; 4. Maturity: the brown rice rate must be above 90.

2. Raw grain storage standards

(1) Warehouse: ventilated, breathable, rainproof, moisture-proof, and free of pollution sources.

(2) Facilities: The reservoir area has good conditions and complete equipment for rodent control, bird control, insect control, fire prevention, theft prevention, and mildew prevention.

(3) Storage: Raw grains are stored in bulk or 20 cm deep in the arched warehouse.

(4) Classification: Storage and storage according to different varieties, different grades, different moisture content, and strict prevention of mixing of different types of raw grains.

3. Feeding process operating standards

1. Quality inspection: The quality inspector will re-inspect the variety, quality, moisture content and brown rice rate of the raw grains leaving the warehouse, and then fill in the inspection Report sheet.

2. Processing plan: The company and workshop director and technician will propose a batch processing plan and issue it to the workshop.

3. Inspection: The custodian will conduct batch inspection and fill out the outgoing report form before entering the production workshop.

4. Hygiene: Before shipment and processing, the warehouse and workshop must be thoroughly cleaned to maintain a good sanitary environment.

IV. Operating standards for cleaning and selection processes

(1) Cleaning and destoning: strictly in accordance with TQLZ1500×2000 self-balancing vibrating screen and TSQ×70B gravity classification destoning machine , TCXT.130 magnetic separator and TEXII150 circulating air direct-connected light impurity separator equipment operation instructions.

1. Before starting the self-balancing vibrating screen, adjust the feeding device and screen body inclination angle, and then adjust the amplitude and vibration direction angle. After adjustment, the locking device must be locked to ensure normal dust cleaning.

2. When the self-balancing vibrating screen is working, attention should be paid to the air volume adjustment at the feed point, and the condition of the sacron sediment should be observed to ensure that it does not contain full particles: (3) Pay attention to the destoner The adjustment of the sieve feed amount is based on the fact that the grains on the sieve stones can be evenly suspended without "blowing through" of the material; (4) The fine adjustment of the destoner is based on the amount of grain contained in the stone. The general adjustment sequence is: At the beginning of driving, set the lever to the highest position, and then gradually adjust it to the appropriate position during operation; (5) During operation, you should frequently check the cleaning situation of various impurities and the quality of scraps, and solve any problems in a timely manner; (6) Self-service The screen surface of the weighing vibrating screen should be cleaned quantitatively every shift. It is strictly forbidden to use heavy objects to knock the screen surface during cleaning; (7) After the empty machine is running normally, slowly open the raw grain feed gate, adjust the flow rate to an appropriate value and then fix it. If there is abnormal noise or severe vibration, the feed gate should be closed immediately and then checked to prevent material blockage.

5. Operating Standards for Brown Rice Processing

(1) Cleaning and removing impurities: The grain accumulated in previous batches of processing cannot be completely cleaned, leaving hidden dangers for pure green food rice. , therefore, after normal operation, the brown rice (3-5 kg) that comes out of the machine first must be intercepted and stored separately as mixed rice to ensure the purity of the rice.

(2) Operating procedures: Follow the operating instructions of the MLGT51 rubber roller rice huller, GCP rough rotary screen and MGCZ gravity rice separator.

1. Start the machine first and then feed the machine. Cut off the feed before stopping the machine and then restart the machine.

2. Adjust the speed of the front and rear rollers to ensure that the speed meets the requirements and ensure good results.

3. According to the number of revolutions required by the process, adjust the speed regulating mechanism and screen surface inclination angle to control the grain content of the net roughness. Generally, fast speed and high inclination angle are beneficial to ensuring the quality of the clean roughness.

4. Precautions after normal operation of the machine: (1) Frequently check the quality of the net roughness and returned hulled paddy, and appropriately adjust the speed regulating mechanism and screen surface inclination angle to ensure compliance with national standards and improve the net roughness. Output; (2) Monitor whether the flow into the machine is uniform, try to keep the flow on the three-layer screen surface consistent, and strictly prohibit the outlet from being clogged; (3) Monitor the feeding situation and keep the feed hopper above the machine stocked to ensure uniform feeding. The shelling rate of the paddy-hull mixture of the paddy-hull machine that controls the irrigation machine is 85-90, and the chaff-containing rate is less than 0.3. (4) Listen for abnormal noises from the operation of the equipment and vibrations caused by impact, so that it can be shut down and repaired in time.

6. Operation standards for rice polishing process

For polished rice processing, SM18 series double-wind rice mills are used, and multiple machines are connected in series. Follow the following procedures:

1. Remove debris around the machine, keep the brown rice entering the machine clean and hygienic, and use the flow adjustment door to control the flow of brown rice entering the machine to ensure the normal operation of the machine.

2. According to the rice variety and quality, adjust the thallium pressure door and spring pressure door to meet the required rice polishing requirements.

3. Check the rice sieve in a timely manner and replace it promptly if problems are found to prevent rice from leaking or mixed with broken rice, which will affect the quality of the rice, reduce the rice yield, and cause loss of polished rice.

4. Control the accuracy of rice output, prevent grinding from being too large or too small, affecting the purity of the rice, and preventing the mixing of broken rice and bran.

5. Ensure hygiene during processing, strictly prohibit contaminants from entering the outer frame, remove accumulated chaff promptly, and keep the interior of the machine clean.

6. For polished rice processing, an iron roller air-jet polishing machine is used to polish the whitened rice, so that the polished rice becomes shiny and does not need to be washed. The dust in the polishing machine must be cleaned frequently to keep the polishing machine clean. hygiene, and at the same time, strengthen environmental management to ensure sanitary conditions.

7. Storage Standards for Finished Products

Finished products are the final link in raw grain processing and the final product. Therefore, the storage of finished products is very important.

1. Store according to variety and grade.

2. Store at the bottom and ventilated.

3. Strengthen four prevention measures, namely mildew prevention, rodent prevention, fire prevention and theft prevention.

4. Product packaging is accurate, with clear trademark, product name, origin, capacity, shelf life, and date of manufacture to prevent mispackaging.

8. Classification

Classify according to rice varieties, and implement the purchase, storage, processing and sales of single varieties.

9. Quality standards

Pure rice requires precision and is tested with precision standard samples set by the country.

1. Special grade: more than 85% of the rice has skin on the back groove and the skin is basically removed from the grain.

2. First-class standard: more than 80% of the cases have skin on the back groove and no more than 1/5 of the skin on the grain.

3. Standard second class: more than 75% of the cases have skin on the back groove and no more than 1/3 of the skin on the grain.

10. Processing personnel

In accordance with the relevant requirements of the national health department, health examinations shall be conducted on the personnel engaged in the company's polished rice processing (referring to those entering the processing workshop and those who come into contact with raw grains and finished products). Work with a health certificate.

11. Processing Area

In order to meet the hygienic quality standards for A-level green food rice and finished products stipulated by the Ministry of Agriculture, the company built the processing plant in a location that meets the production environment standards. Jiu Sheng Town, Qing'an County.

12. Clean rice packaging

"Shuangjie" brand green food rice is packaged in paper bags and non-toxic plastic bags.

13. Process flow and process characteristics

1. Process flow

Raw material cleaning, low-temperature drying, light rolling and hulling separation

Thickness grading, multi-machine light grinding, polishing, grading, color sorting, electronic measurement, packaging and storage

2. Process characteristics:

(1) Thorough dust removal. Three additional steps have been added: secondary screening before hulling, grading after grinding, and color selection before packaging. Impurities and disease spots such as stones, chaff powder, broken grains, insect eggs, and heterochromatic grains are completely removed to ensure product quality.

(2) To prevent secondary pollution during processing, the six processes of drying, impurity removal, rice hulling, whitening, color sorting and packaging are relatively separated in the process arrangement, effectively preventing Dust cross-contamination and pollution from sulfur dioxide and 3 and 4 benzopyrene.

(3) The yield rate has been improved. Due to the adoption of technical routes such as slow drying after drying, two-stage rough selection, brown rice conditioning and "two sand and two iron whitening", the moisture content and quality have been achieved. Balanced, low broken rice rate, effectively improving the yield rate.

(4) The rice grains are smooth, complete, pollution-free and do not need to be washed, effectively preserving the water-soluble vitamins and other nutrients in the rice.