CN101915712A - Method for detecting rice processing accuracy - Google Patents
Method for detecting rice processing accuracy Download PDFInfo
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- CN101915712A CN101915712A CN 201010255140 CN201010255140A CN101915712A CN 101915712 A CN101915712 A CN 101915712A CN 201010255140 CN201010255140 CN 201010255140 CN 201010255140 A CN201010255140 A CN 201010255140A CN 101915712 A CN101915712 A CN 101915712A
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Abstract
The invention discloses a method for detecting rice processing accuracy and belongs to the technical field of rice processing. The method mainly comprises the following steps of: (1) sampling rice grains, namely sampling rice grains before and after processing; (2) finishing the sampled rice grains, namely removing impurities from the sampled rice grains and incomplete rice grains; (3) weighing the sampled rice grains, namely weighing the sampled rice grains before processing in unit number and weighing the sampled rice grains after processing; and (4) calculating the rice processing accuracy, wherein the calculation formula is MDr=Wr/Wb, wherein the MDr is the processing accuracy of the processed rice grains; Wb is the weight of the sampled rice grains before processing in unit number; and Wr is the weight of the sampled rice grains after processing in unit number. The method for detecting the rice processing accuracy has the advantages of simple and definite detection steps, capacity of reflecting the rice processing accuracy through a qualitative value, and contribution to production management and research.
Description
Technical field
The present invention relates to the rice processing technique field, relate in particular to the detection of rice processing accuracy.
Background technology
The check of existing rice processing accuracy generally according to national standard " rice GB1354-2009 ", mainly contains following several method:
1. direct comparison method: utilize rice class and corresponding machining precision classification standard sample to compare, judge the machining precision grade by observation.
2. decoration method: utilize the affinity difference of the variant structural constituent of rice to various dyeing group molecules, after the dyed processing, each tissue of the grain of rice presents different colors, thereby judges the machining precision of rice..
Mainly there is following shortcoming in above-mentioned two kinds of methods: direct comparison method and decoration method are a kind of qualitative detection, and subjectivity is strong, random greatly, accuracy is not high and efficient is low.
In addition to the above methods, see reported method below also having: chemical method, as Analysis of phosphorus contents method, extracting fat method etc.; Photoelectric method; Computer picture recognition method, as the visual method of identification that dyes (its principle essence think decoration method), transmission image method of identification etc., spectral analysis detection method or the like.The needed testing instruments of these detection methods (equipment) are complicated, it is higher to drop into, require high, check program complicated, consuming time long etc. to reviewer's operation, and except that direct pairing comparision, the check sample of additive method can't reclaim and can only be as discarded object.
In actual production each factory extensively with finished product rice milling yield (is radix with paddy or brown rice) as an important technical and economical index, and existing above-mentioned detection method can't be carried out the quantification association study with the finished product rice milling yield, can't play good directive function to actual production.Existing simultaneously detection method is primarily aimed at the finished product rice, and is not suitable for the machining precision detection of the intermediate product in the process.
Summary of the invention
At the prior art above shortcomings, the applicant discloses a kind of detection method of rice processing accuracy, and the detection cost is low and detection efficiency is high, and detecting operation is simple and convenient.
The technical solution adopted in the present invention is as follows:
The present invention adopts the following steps check:
(1), grain of rice sampling: to the sampling of the grain of rice before processing and the processing back grain of rice;
(2), the arrangement of sampled rice grains: reject the impurity and the imperfect grain of rice in the sampled rice grains;
(3), weighing of sampled rice grains: take by weighing the weight of sampled rice grains before the processing of Board Lot and add
The weight of sampled rice grains behind the worker;
(4), the calculating of rice processing accuracy, computing formula is as follows:
MDr=Wr/Wb
In the formula:
The machining precision of MDr-processing back grain of rice;
The weight of sampled rice grains before the processing of Wb-Board Lot;
The weight of sampled rice grains after the processing of Wr-Board Lot.
Technical scheme is that the grain of rice is a brown rice before the above-mentioned processing further, and the processing back grain of rice is a semi-manufacture rice.
The bright technique effect of this law is to detect that cost is low and detection efficiency is high, and checking procedure is simply clear and definite, can reflect the machining precision of rice by the numerical value that quantizes, and helps Production Management and Research.
Embodiment
The process of rice processing is ground the brown rice cortex exactly and is gone, and reaches certain accuracy requirement.The processing of general rice processing factory adopt a machine go out rice or two machines go out rice or three machines go out rice in addition more multimachine go out different process flow processs such as rice.Each road epidermis grinds and removes, the weight of brown rice particle with regard to corresponding minimizing some.Thinking of the present invention is the weight change according to brown rice, different semi-manufacture rice (refer to be ground the part cortex but do not reach accuracy requirement as yet brown rice), finished product rice (referring to reach accuracy requirement) Board Lot particle separately, the machining precision of check rice.An aforesaid machine or multimachine go out rice and refer to process rice by one or multi-channel rice mill, and the road number of rice mill is many more, and the machining precision of rice is high more, and rice mill and concrete manufacturing procedure thereof are the known technology of this area.
Embodiment 1
For measuring the concrete implementation step of finished product rice processing accuracy:
Step 1: sampling
Extract the brown rice and the finished product rice sample of about 500 to 1000 grams respectively.The extracting position of brown rice sample is before slubbing rice mill feeding mouth, and the extracting position of finished product rice sample is one rice mill or buffing machine discharging opening place in the end.
Step 2: the sampling sample is put in order
Step 2.1, the regulation of pressing GB/T5494 are removed impurity in the sample, the imperfection grain of rice etc., and concrete steps are as follows:
About 100 grams of at every turn materialsing are put into diameter 1.0mm round-hole mesh, screen with electronic screening washer method or hand sieve method.Wherein electronic screening washer method is as follows: package by the sieve layer of stipulating among the GB/T5494 that (griddle is last, little hole sizer is following, at the bottom of the cover top sieve), materials in accordance with regulations and put on the sieve, cover the sieve lid, be placed on the electronic screening washer, energized, open switch, the speed of jigging is 110r/min-120r/min, static a moment behind the sieve, patting sieve behind the sieve makes the chaff powder fall into the sieve end, screen overflow and screen underflow are poured into respectively in the analysis disc, be stuck in the middle particle of sieve aperture and belong to screen overflow, therefrom pick paddy kernel, barnyard millet in husk and other impurity etc.
The also available hand sieve method of above-mentioned screening step replaces, and concrete steps are as follows: will sieve layer by electronic screening washer method and package, and pour sample into, and build the sieve lid.Then screening washer is placed on glass plate or the smooth desktop, with the hands with the speed of 110 times/min-120/min, by clockwise and counter-clockwise direction respectively sieve 1min, the scope grasp that sieves is jigging enlarged-diameter 8cm-10cm.Operation behind the sieve is identical with electronic screening washer method.
Step 2.2, the regulation of pressing GB/T 5503 is removed the particle in the sample:
(1) picking of comminutions: earlier from top to bottom with 2.0mm, 1.0mm sieve and sieve end cover install, again about 100 gram samples are placed in the diameter 2.0mm round-hole mesh, close the lid, be installed on electronic screening washer (rotating speed 110r/ min-120r/ min, can control automatically with 1min is to rotate 1 time at interval clockwise and counterclockwise) on carry out automatic screening, or mounted cereal screening washer placed on the smooth flat, with the hands with the speed about about 100r/min, reach rotation 1 min counterclockwise clockwise, the control slewing area is jigging the about 8cm-10cm of expansion on the basis of diameter.
(2) picking of big particle: the comminutions that picks is resided on the 2.0mm round-hole mesh, pour the particle that is stuck in the sieve aperture into the separation vessel of cracking rice, the angle of inclination that adjustment is cracked rice and struggled against according to the grain type makes separating effect the best, separates 2min.Pour into whole grain and particle that initial gross separation goes out in the analysis disc respectively, knock separator cartridge gently with wooden stick, the particle that remains in the separator cartridge is incorporated in the particle, sort out the particle that is not less than whole grain average length 3/4 in the particle and incorporate whole grain into, sort out in the whole grain and incorporate particle into less than the particle of whole grain average length 3/4.
Under the situation that lacks the separation vessel of cracking rice, the particle on the 2.0mm round-hole mesh can be poured in the analysis disc together with the particle that is stuck in the sieve aperture, sort out particle by hand less than whole grain average length 3/4.
Step 2.3 is carried out the branch sample by the regulation of GB5491, i.e. inquartation or sample spliter method.
Inquartation: sample is poured on the desktop of smooth planar or on the glass plate, with two branch models sample is spread out quadrate, scoop up the about 10cm height of sample from sample the right and left then, centering adjustment falls simultaneously, change a direction again and operate (central point is motionless) equally, mix four so repeatedly, five times, sample is spread out into the square of uniform thickness, on sample, draw two diagonal line with minute model, be divided into four triangles, take out the wherein sample of two Hourgrass Touching Triangles, remaining sample divides as stated above repeatedly again to be got, till the approaching required sample total amount of the sample of last two Hourgrass Touching Triangles that are left (30-50 gram).
Sample spliter method: the sample spliter of cleaning is put surely, close the funnel switch, put well and connect the sample bucket, pour sample into funnel from being higher than the about 5cm of bell mouth, wipe sample off, open the funnel switch, after treating that sample flows to end, pat the sample spliter shell, close the funnel switch, again two samples that connect in the sample bucket are poured in the funnel simultaneously, continued to repeat to mix twice according to last method.Continue the branch sample as stated above with a sample that connects in the sample bucket later on, till an approaching required sample total amount of sample (30-50 gram) that connects in the sample bucket at every turn.
Obtain brown rice sample and finished product rice sample by this step into perfect kernel.
Step 3: weigh
Press the regulation of GB/T5519-2008 and measure single times of mass of 1000 kernel or several times mass of 1000 kernel.
After the method that combines with grain rolling counters forward or manual counting or they obtains thousand or thousand brown rice of several times and finished product rice, weighing and write down heavy Wb of its Board Lot particle and Wr, is unit with the gram, remains into behind the radix point more than one.Weighing of this step also can be got other integral multiples of the grain of rice according to actual conditions.
The instrument and equipment that this step is used has: (1) automatic several instrument, (2) balance, scale division value 0.01g, (3) surface plate, analysis disc, tweezers.
Step 4: the result calculates
According to heavy Wb of the Board Lot particle that records and Wr, according to formula MDr=Wr/Wb, obtain finished product rice processing accuracy MDr value, remain into behind the radix point more than two.
Embodiment 2: the concrete implementation step of measuring brown rice and middle rice product machining precision with the inventive method:
Step 1: the brown rice and the middle product of certain n road brown rice that extract enough weight respectively.
The extracting position of brown rice is before slubbing rice mill feeding mouth, and the extracting position of product is at corresponding n road rice mill or buffing machine discharging opening place in the middle of the brown rice.
Step 2: with the step 2 of embodiment 1.
Obtain being product sample in the middle of the brown rice sample of perfect kernel and the brown rice by this step.
Step 3: with the step 3 of embodiment 1.
By this step, record heavy Wb of Board Lot particle and Wmn, be unit with the gram.
Step 4: the result calculates, and according to heavy Wb of the Board Lot particle that records and Wmn, according to formula MDmn=Wmn/Wb, obtains product machining precision MDmn value in the middle of the brown rice, remains into behind the radix point two (or more multidigit).
Following table 1 goes out meter tables of data of machining precision check for what utilize the inventive method in the rice work flow.
Raw material variety: quality indica paddy--rich two excellent No. 6, test site: Tongcheng, Anhui green grass scented rice industry group rice mill.The brown rice of sample 1 and sample 2 and rice finished product are mass of 1000 kernel (unit: gram).Finished product verifies as qualified one-level long-grained nonglutinous rice through existing direct comparison method.As can be seen from Table 1, go out rice by a machine and go out rice to four machines, machining precision MD value reduces gradually, goes out the Mi Shiji machining precision and raises gradually, tallies with the actual situation.Final finished rice processing accuracy MDr value is 0.8597, has been equivalent to remove about 10% impurity, belongs to higher processing precision, with the check conclusion basically identical of existing direct comparison method.The MD value basically identical of sample 1 and sample 2 has proved the stability of this inventive method.
Utilize the present invention to measure the machining precision of the middle product of brown rice processing, can study brown rice and finished product rice milling yield quantification relevance each other further, in production management system, obtain finished product rice milling yield value, and record.With the unit interval (hour or class or day etc.) set up Relational database, with methods such as statistics, function, charts, work out the quantification relevance between the two.
The instrument, the utensil (buffing machine, the separation vessel of cracking rice, grain counter etc. as described above) that do not specify in this instructions are the known technology of this area.
Claims (2)
1. the detection method of a rice processing accuracy, it is as follows to it is characterized in that detecting step:
(1), grain of rice sampling: to the sampling of the grain of rice before processing and the processing back grain of rice;
(2), the arrangement of sampled rice grains: reject the impurity and the imperfect grain of rice in the sampled rice grains;
(3), weighing of sampled rice grains: take by weighing the weight of sampled rice grains before the processing of Board Lot and the weight of processing back sampled rice grains;
(4), the calculating of rice processing accuracy, computing formula is as follows:
MDr=Wr/Wb
In the formula:
The machining precision of MDr-processing back grain of rice;
The weight of sampled rice grains before the processing of Wb-Board Lot;
The weight of sampled rice grains after the processing of Wr-Board Lot.
2. according to the detection method of the described rice processing accuracy of claim 1, it is characterized in that: the grain of rice is a brown rice before the described processing, and the processing back grain of rice is a semi-manufacture rice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010255140 CN101915712A (en) | 2010-08-17 | 2010-08-17 | Method for detecting rice processing accuracy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010255140 CN101915712A (en) | 2010-08-17 | 2010-08-17 | Method for detecting rice processing accuracy |
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| CN101915712A true CN101915712A (en) | 2010-12-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221552A (en) * | 2011-05-23 | 2011-10-19 | 河南工业大学 | Measuring method for processing accuracy of rice |
| CN108802303A (en) * | 2018-05-24 | 2018-11-13 | 益阳市福华米业有限公司 | A kind of rice processing accuracy automated detection method |
| CN114354541A (en) * | 2020-10-14 | 2022-04-15 | 中粮集团有限公司 | Rice processing precision detection method and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2725887Y (en) * | 2004-09-08 | 2005-09-14 | 四川新曙光信息产业有限公司 | Integrated tester for rice quantity |
| US7765883B1 (en) * | 2007-05-08 | 2010-08-03 | Catalyst Partners, Inc. | Dry blending aid |
-
2010
- 2010-08-17 CN CN 201010255140 patent/CN101915712A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2725887Y (en) * | 2004-09-08 | 2005-09-14 | 四川新曙光信息产业有限公司 | Integrated tester for rice quantity |
| US7765883B1 (en) * | 2007-05-08 | 2010-08-03 | Catalyst Partners, Inc. | Dry blending aid |
Non-Patent Citations (3)
| Title |
|---|
| 《中国粮油学报》 20040630 刘建伟 《大米加工精度与碾白程度检测的研究》 第5-8页 1，2 第19卷, 第3期 2 * |
| 《现代商贸工业》 20070131 郭丽辉 大米加工精度的检测方法综述 114-115 1-2 第19卷, 第1期 2 * |
| 《粮油加工》 20091231 范玉英等 一种检测稻米加工精度的新方法 87-89 1-2 , 第4期 2 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221552A (en) * | 2011-05-23 | 2011-10-19 | 河南工业大学 | Measuring method for processing accuracy of rice |
| CN108802303A (en) * | 2018-05-24 | 2018-11-13 | 益阳市福华米业有限公司 | A kind of rice processing accuracy automated detection method |
| CN114354541A (en) * | 2020-10-14 | 2022-04-15 | 中粮集团有限公司 | Rice processing precision detection method and system |
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Address after: 214000 Jiangsu city of Wuxi Province River Road No. 186 Applicant after: COFCO Engineering & technology Co., Ltd. Address before: 214000 Jiangsu city of Wuxi Province River Road No. 186 Applicant before: Wuxi Scientific Research and Design Inst., State Grain Reserves Bureau |
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Application publication date: 20101215 |