JPH0810631A - Rice cleaning equipment - Google Patents

Abstract

PURPOSE:To obtain rice cleaning equipment capable of performing rice cleaning based on a predetermined standard corresponding to the old rice degree of unpolished rice even with respect to unpolished rice different in old rice degree. CONSTITUTION:An unpolished rice odor detection means 10 detecting the odor emitted from unpolished rice is installed to rice cleaning equipment equipped with a rice cleaning part 5 capable of cleaning unpolished rice received in a receiving part 2 to a state different in cleaning degree and a cleaning degree control means 80 altering the rice bran removing ratio of cleaning treatment in the rice cleaning part 5 according to the rising amt. of the detection value at the point of time of the start of odor detection as detected odor data is also installed thereto and a rice bran removing ratio is largely regulated as the rising amt. becomes large.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice-polishing facility equipped with a receiving section for receiving brown rice to be polished and a rice-polishing section capable of polishing the brown rice received in the receiving section in different states of precision.

[0002]

2. Description of the Related Art Conventionally, a rice milling equipment 1 has a structure capable of adjusting its grinding accuracy. For example, as shown in FIG. 1, a plurality of rice milling machines 3 are provided on the lower side of a brown rice receiving section 2. By providing the discharge path 4 capable of discharging the polished rice after each stage, it has been possible to obtain the polished rice with different milling accuracy. In addition, there is also a configuration that has a single rice milling machine and circulates the milled rice from the lower side of this rice milling machine to the upper side of the rice milling machine and adjusts the number of times of this circulation to adjust the precision of the milling. Are known. By the way, in the case of performing rice polishing by adjusting the milling precision in this way, conventionally, before the rice polishing operation, the operator confirms the state of the brown rice,
It has decided the accuracy of polishing (the degree of rice polishing). Here, even when the freshness of the brown rice targeted for rice polishing is deteriorated, such as new rice, old rice, and old old rice, the rice was polished based on the empirically known polishing accuracy (rice polishing degree). .

[0003]

Therefore, the setting of the polishing accuracy in the rice-polishing operation depends largely on the operator's feelings, and the standard differs for each worker, and the rice-polishing operation according to a certain standard is required. Was not done. Furthermore, when freshness is deteriorated, such as new rice, old rice, and old rice, rice polishing is performed based on empirical values, so that the precision of polishing (the degree of rice polishing) according to the individual state of brown rice is not set, There is also a problem in this respect, because the milling precision is not set according to the predetermined physical property standards, so that the milling is performed on the side where the rice yield is low and the yield is low. An object of the present application is to obtain a rice-polishing facility capable of performing rice-polishing according to a predetermined standard according to the degree of brown rice conversion, even for brown rice having a different degree of old rice conversion.

[0004]

[Means for Solving the Problems] A characteristic configuration of the rice polishing equipment of the present invention for achieving this object is that it is equipped with a brown rice odor detecting means for detecting an odor emitted by brown rice and an odor detected by the brown rice odor detecting means. According to the information, it is equipped with a means for adjusting the accuracy of rice bran removal that changes the removal rate of rice bran in the rice polishing process. Then, in the configuration of the above rice polishing equipment, the odor information is the rising amount of the detected value at the start of the odor detection by the brown rice odor detecting means, and the roaring accuracy adjusting means, the larger the rising amount,
It is preferable to greatly adjust the bran removal rate. Furthermore, in the configuration of the above-mentioned rice polishing equipment, a rice odor detecting means for detecting the odor emitted by the white rice that has completed rice polishing in the rice polishing section is provided, and it is necessary to re-rice the rice according to the odor information detected by the rice odor detecting means. It is preferable to provide a whitening state confirmation means for determining whether or not to perform. The actions and effects thereof are as follows.

[0005]

In the rice polishing equipment of the present application, a brown rice odor detecting means for detecting an odor emitted from brown rice is provided, and the state of the brown rice (for example, the degree of freshness deterioration due to old rice) is determined by the detection value of this means. It is said that the deterioration of the freshness of rice is caused by the oxidation and hydrolysis of the components contained in rice bran, and the lipids (triglycerides) and proteins in the rice bran are
When stored, it oxidizes to become volatile odorous components such as fatty acids and carbonyl compounds, which are generated from brown rice. It is possible to detect these odorous components by the brown rice odor detecting means, and to know the necessity of milling based on the information, and the milling accuracy adjusting means adjusts the bran removal rate based on this information. Therefore, according to the odor information, which mainly serves as an indicator of the freshness of brown rice and also an indicator of the state of bran,
By removing the bran, it was possible to obtain a rice-polishing facility capable of performing rice-polishing according to the freshness of brown rice.

Further, in the above-mentioned rice polishing equipment, as the odor information, the rising amount of the detection value at the start of odor detection by the brown rice odor detecting means is detected, and the rising accuracy adjusting means has a large rising amount according to this amount. 、、
When the bran removal rate is adjusted to a large degree, the freshness of brown rice can be detected quickly with high sensitivity, and the bran removal rate can be increased based on the degree of this detection information to ensure proper refinement. be able to. Here, FIG. 2 shows a change situation of the detected value of the odor component concentration by the brown rice odor detecting means in the time domain, and the detected output in the new rice is the lowest and the storage period becomes longer. , It shows that the concentration of odor components emitted from old rice is high. Further, the rising amount of the detected value at the time of the start of the detection (the first derivative value at the origin and the value after the elapse of a certain time near the origin) also increases as the freshness deteriorates. Here, a and b indicate the storage period, and in terms of the period, a is about twice as long as b.

Further, the above-mentioned rice polishing equipment is provided with a white rice odor detecting means for detecting an odor generated by the white rice that has completed the rice polishing in the rice polishing section, and it is necessary to re-polish rice according to the odor information detected by the white rice odor detecting means If a polishing state confirmation means for determining whether or not to prepare is provided, the state of the polished rice is judged by the odor emitted from it at the stage when the rice polishing is completed for the time being (basically, this criterion is used when there are many odors. , Unnecessary bran components remain, it is judged that it is necessary to polish rice again.) Initially, it was determined whether or not proper rice polishing was carried out in the rice polishing treatment set by the brown rice odor detection means and the milling accuracy adjustment means. Then, it is possible to determine whether or not it is necessary to carry out rice polishing again by the polished state confirmation means, and if necessary, further rice polishing can be performed. As a result, it is possible to perform proper rice polishing while judging the state of freshness deterioration of rice at both the rice polishing start stage and the rice polishing completion stage.

[0008]

As described above, it becomes possible to carry out the milling of rice according to the degree of old rice conversion according to a predetermined standard depending on the individual situation of brown rice. Therefore, it becomes possible to improve the yield of rice polishing. Furthermore, it becomes possible to perform a preferable rice polishing operation by accurately judging the state of brown rice and the state of polished rice.

[0009]

Embodiments of the present application will be described with reference to the drawings. The configuration of the rice polishing equipment 1 of the present application is shown in FIG. The rice polishing equipment 1 is provided with a receiving unit 2 for receiving brown rice to be polished and a first odor sensor 10 as a brown rice odor detecting unit for detecting an odor emitted by the brown rice received by the receiving unit 2. An odor detecting unit 11, a rice polishing unit 5 in which a plurality of rice polishing machines 3 are arranged in the order of rice flow down, and a second odor sensor 1 as a white rice odor detecting means for detecting an odor emitted from polished rice.
2 and a white rice odor detector 13 in which the two are arranged in this order.

The first odor sensor 10 and the second odor sensor 12 are each composed of an odor sensor, and can detect the odor emitted from rice that has become old rice. As these odor sensors 10 and 12, a gas chromatograph type gas sensor,
A semiconductor gas sensor (for example, a portable odor sensor XP-329 Series manufactured by New Cosmos Electric Co., Ltd.) is used. As shown in the figure, the rice milling unit 5 is provided with four rice milling machines 3, which are
Equipped with a first rice milling machine 31 that performs the minimum basic milling, a second rice milling machine 32, a third rice milling machine 33, and a fourth rice milling machine 34 that mill the preliminary milled rice milled by this rice milling machine into three stages. There is. The second to fourth rice milling machines 32, 33, 34 are connected in series by a continuous transport path 41, and a bypass path 42 is provided to directly discharge the polished rice from the respective outlets 35, 36, 37, 38. The sending-out unit 6 that sends out rice has a structure capable of carrying rice. Furthermore, the third rice milling machine 3
The third and fourth rice milling machines 34 are connected in parallel,
According to a desired rice milling condition, a configuration is adopted in which the rice milled by these rice milling machines 33 and 34 is mixed and conveyed to the sending section 6. Therefore, the rice that has passed through each of the first rice milling machine 31 to the fourth rice milling machine 34 in sequence is in the state of the highest precision (the state of high bran removal rate), and the second rice milling machine 3
The product directly conveyed from 2 to the delivery section 6 is in a state of low lapping accuracy (state of low bran removal rate). That is, the precision of polishing the white rice obtained from the rice polishing equipment can be adjusted by operating the second to fourth rice milling machines 32, 33 and 34 or not. Here, the selection of the transport route is performed by the opening / closing valve 43 provided in the route, and this opening / closing operation is performed by the rice polishing control device 8. Exit 3 of the second rice mill 32, the third rice mill 33, and the fourth rice mill 34
5, 36, 37, 38 are provided with a quality inspection device 7 for detecting the quality (for example, whiteness) of the rice conveyed through this part. Then, the polished white rice discharged from the sending-out unit 6 is again inspected for its odor in the white rice odor detecting unit 13, and the polishing of rice is finished for the time being.

Now, in the rice polishing equipment 1, the first odor sensor 10, the second odor sensor 12 provided in the brown rice odor detector 11, the white rice odor detector 13, and the outlet 35 of each rice mill are provided. , 36, 37, 38 are provided with a rice-polishing control device 8 that collects detection information from quality inspection devices 7 and controls rice-polishing. The rice-polishing control device 8 is provided with a rice-polishing precision adjusting means 80 for changing the bran removal rate of the rice-polishing process in the rice-polishing section 5 according to the odor information emitted by the brown rice detected by the first odor sensor 10. This configuration will be described in more detail. As shown in FIG. 2 described above, in the output from the first odor sensor 10, the rising amount of the detected value at the odor detection start time (at the origin (at the start of measurement)) A configuration that can calculate and derive the first derivative value or the increase amount for a certain time) is adopted. Depending on this rising amount, the larger this is, the more rice polishing is performed and the bran removal rate is greatly adjusted between the rice polishing machines 3. A configuration for adjusting the transport path of is adopted. That is, FIG.
As shown in, according to the rising amount of the odor component concentration shown on the horizontal axis, the rice transport route is selected and the milling accuracy is adjusted so that the bran removal rate is increased from about 5 minutes to about 15 minutes. Of. In this way, in the rice polishing equipment 1 of the present application, according to deterioration of freshness of rice (degree of old rice),
The bowling accuracy is adjusted.

[0012] Now, the odor component of the polished rice, which has been temporarily polished by the above structure, is similarly detected by the second odor sensor 12. Similarly to the above, the rising amount of the detected value is detected, and it is determined whether or not this is less than or equal to a predetermined value. Then, those below a predetermined value are conveyed and discharged from the equipment as product white rice as they are, and those above a predetermined value are sent to the rice polishing operation again. That is, the above-described rice-polishing control device 8 is provided with a polished-white state confirming means 81 for determining whether or not another whitening is necessary according to the odor information detected by the polished rice odor detecting means. This result is displayed on the display device 85 provided together with the rice-polishing control device 8, and according to the result, the configuration is adopted in which the white rice is automatically returned to the rice-polishing via the transportation part 44.

The above is the configuration of the rice polishing equipment of the present application.
In order to explain the operation in an organized manner, the brown rice accepted by the accepting unit 2 is detected by the brown rice odor detecting means 10 and the odor emitted by the brown rice odor is detected. It is determined by the adjusting means 80.
Then, in the rice polishing unit 5, after the rice polishing for the determined bran removal rate is performed, the odor produced by the obtained white rice is detected by the white rice odor detecting means 12, and the state of the white rice is judged. An appropriate amount of bran-free white rice, which produces less than a certain amount of odor, is sent out from the equipment. Therefore, it is possible to rationally obtain white rice that has a good taste.

[Other Embodiments] In the above embodiment, the bran removal rate is adjusted and set based on the rising amount (characteristic) of the information detected by the odor sensor, but in the steady state of the detected value by the odor sensor. The bran removal rate may be adjusted according to the value, the time required to reach the predetermined value, and the like. In these cases, the configuration on the software side of the brown rice odor detecting means can be easily configured. Furthermore, the freshness deterioration state of rice is determined by the concentration of the specific component, etc.
You may employ the structure which polishes rice. In this case, a carbonyl compound is suitable as the specific component of the odor,
Good detection is possible.

Further, in the above construction, a plurality of rice milling machines are provided on the rice milling route, and the rice removal rate is adjusted by carrying out rice from an intermediate portion thereof, but a small number of rice milling machines are provided. It is also possible to circulate the rice to be rice-polished between the upper side and the lower side of the rice-polishing machine and change the number of circulations to change the degree of the polishing process. In this case, the number of rice polishing machines can be reduced, so that the equipment cost can be reduced.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of drawings]

[Figure 1] Diagram showing the structure of rice polishing equipment

FIG. 2 is a diagram showing the detection status of odor component concentrations in rice with different degrees of old rice conversion.

FIG. 3 is a diagram showing a relationship between a rising amount of a sensor detection value and a bran removal rate.

[Explanation of symbols]

 2 Receiving part 5 Rice milling part 10 Brown rice odor detecting means 12 White rice odor detecting means 80 Strain accuracy adjusting means 81 Polishing state confirmation means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryogo Yamauchi 1-1-1 Hama, Amagasaki City, Hyogo Prefecture Kubota Technology Development Laboratory Co., Ltd.

Claims (3)

[Claims] 1. A rice receiving unit (2) for receiving brown rice to be rice-polished, and a rice-polishing unit (5) capable of milling the brown rice received by the receiving unit (2) in a state of different precision. The rice polishing equipment is provided with a brown rice odor detecting means (10) for detecting an odor emitted by the brown rice, and according to the odor information detected by the brown rice odor detecting means (10), the rice polishing part (5). Rice milling equipment equipped with a grain precision adjusting means (80) for changing the bran removal rate of milling treatment. 2. The odor information is the rising amount of the detection value at the time when the odor detection by the brown rice odor detecting means (10) starts, and the roaring accuracy adjusting means (80).
The rice polishing equipment according to claim 1, wherein the rice bran removal rate is adjusted to a greater extent as the rising amount is larger. 3. A white rice odor detecting means (12) for detecting an odor emitted from white rice that has been polished in the rice polishing section (5).
The rice polishing equipment according to claim 1, further comprising a whitening state confirmation means (81) for determining whether or not the rice needs to be polished again according to the odor information detected by the white rice odor detection means (12).