JPH06106137A - Grader selection device in brown rice sorter - Google Patents

Abstract

(57) [Summary] [Purpose] Automates the determination of screening conditions and always selects the correct screening conditions. [Structure] Sample grains are taken from brown rice to be sorted, sorted by a grader 27 for samples having different sorting grades into four grades according to grain size, and the taste value is detected by a taste meter 33 for each. Based on these taste values for each class, the grade of the sample grader whose taste value exceeds the standard value is adopted as the grade of this grader (not shown) from which brown rice other than the sample grains should be sorted. Conventionally, the selection scale was selected only based on the grain size of the brown rice to be selected, but since the actual taste value can be reflected, an appropriate scale can always be selected.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a brown rice sorting machine for removing low quality grains from dried and hulled brown rice to extract only good quality grains, which grader has a plurality of different grades. The present invention relates to a grader selection device that selects whether to use.

[0002]

2. Description of the Related Art It is empirically known that there is a certain correspondence between the grain size of rice and the taste, that is, the larger the grain size, the better the taste. Utilizing this property, in conventional grain drying and preparation facilities, brown rice after drying and hulling is supplied to a grain size selector (so-called grader), and only grains with a grain size of a certain value or more are taken out It is widely practiced to remove low quality grains, waste rice, and broken rice from the whole to obtain good quality grains with good taste.

[0003]

However, the correspondence between the particle size and the taste is not necessarily uniform and varies depending on the rice variety and cultivation conditions. For example, as shown in FIG.
Then, if the selection pattern is set to 1.85 mm, the target taste value S can be obtained, but in order to obtain the same taste value S for other varieties B, the selection pattern needs to be set to 1.95 mm. in this way,
To select a variety of rice and ensure a certain level of taste,
The criterion for distinguishing between good quality grains and low quality grains, that is, the grader selection grade, must be changed appropriately according to the properties of rice.

[0004] However, since the determination of the selection pattern has been largely based on the rule of thumb of the selection operator based on the variety and appearance of rice, it is difficult to properly set the selection pattern, and it is necessary to have many years of experience. It required skill.

SUMMARY OF THE INVENTION An object of the present invention is to provide a grader selection device which can automatically determine the selection degree, which has conventionally required skill, and can always set an appropriate selection degree.

[0006]

[Means for Solving the Problems] In order to achieve the above object,
The grader selection device in the brown rice sorter of the present invention is configured as follows.

The first aspect of the present invention is a brown rice sorting process in which the flow path of brown rice is switched by a switching device, and the brown rice is supplied to any one of a plurality of graders having different sorting conditions and sorted according to the size of the grain. In the machine, sample collecting means for collecting sample particles from the brown rice, sample particle size selecting means for selecting the sample particles collected by the sample collecting means according to the size of the particle size, and the sample particle size selecting means Based on the taste value of each class detected by the sample taste detecting means and the sample taste detecting means for detecting the taste value of the sample particles of each class selected by the means, the taste value exceeds a predetermined reference value. A grader designating unit that designates any one of the plurality of types of grader so that only the graded brown rice is sorted, and a grader designating unit that responds to the designation of the grader designating unit. Te, a grader selection device in brown rice sorter comprising and a control means for controlling the switching device.

A second aspect of the present invention is to switch the flow path of brown rice by a switching device to supply the brown rice to any one of a plurality of graders having different selection grades, and select the brown rice according to the size of the grain. In the sorter, sample collecting means for collecting sample particles from the unpolished brown rice, and sample particles collected by the sample collecting means, sample particle size selecting means for selecting by size according to the size of the particle size, and the sample Sample particles of each class selected by the particle size selection means, sample taste detection means for measuring the taste value, and a composition ratio calculation means for calculating the composition ratio of the sample particles of each class selected by the sample particle size selection means. The grader was used for each of the plurality of types of graders based on the proportion of the sample grains of each class calculated by the constituent ratio calculating means. Yield calculation means for calculating the combined yield, the taste value for each class measured by the sample taste detection means, and the yield calculated by the yield calculation means from the combination of any one of the plurality of graders It is a grader selection device in a brown rice sorting machine, which comprises a grader designating unit for designating one and a control unit for controlling the switching device according to the designation of the grader designating unit.

[0009]

In the first aspect of the present invention, when the sample collecting means collects the sample grains from the unpolished brown rice, the sample grain system selecting means sorts the sample grains according to the size. The sample taste detecting means measures the taste value of the sample particles of each of these classes. The grader designation means is
Based on the taste value of each class detected by the sample taste detecting means, one of a plurality of graders is designated so as to select only brown rice of a class having a taste value exceeding a predetermined reference value. The control means controls the switching means according to the designation of the grader designating means. Therefore, the unpolished brown rice is supplied to the grader with the mesh specified by the grader specifying means.
Be sorted.

As described above, in the first invention, a part of brown rice to be selected is sampled as a sample grain, and based on the measurement of the taste of the sample grain, which grader is used to select the whole brown rice. Specify whether or not. Therefore, in the past, the grader was approximately selected based on only the size of the particle size, whereas in the first invention, the actual taste value can be reflected in the selection of the grader, and the grader is always appropriate. It is possible to select the desired mesh size, and the skill of the operator is not required.

In the second aspect of the invention, the sample taste detecting means measures the taste value of the sample particles of each class, as in the first aspect. On the other hand, when the composition ratio calculation means calculates the composition ratio of the sample grains of each class, based on this composition ratio, the yield calculation means calculates the yield when the grader is used for each of a plurality of graders. To do. The grader designating unit designates any one of a plurality of graders from the combination of the taste value for each class measured by the sample taste detecting unit and the yield calculated by the yield calculating unit.

Generally, if only the taste is to be improved,
Although there is an adverse effect that the yield is reduced and waste of brown rice occurs, in the second invention, in selecting the grader,
As in the first invention, in addition to considering the taste value of the sample grains, the grader is selected in consideration of the yield as well, so the yield is reduced because the emphasis is placed only on the taste value, and the overall profit is reduced. As a result, it is possible to prevent the harmful effects of decreasing as a result, and always obtain the maximum profit according to the properties and quality of brown rice.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is an explanatory view schematically showing a brown rice sorter for carrying out the present invention. Reference numeral 1 is a load receiving hopper for receiving the dried and hulled brown rice, and 2 is a grain raising machine for raising the brown rice supplied to the load receiving hopper 1. A waste rice removal grader 3 for selecting and removing waste rice / crushed rice according to the particle size is connected to the upper end discharge port of the grain submersion machine 2. The mesh size of the scrap rice removing grader 3 is 1.80 mm.

On the discharge side of the scrap rice removal grader 3, a sizing meter 4 and a scrap rice weighing device 5 are arranged. The residual side of the scrap rice removing grader 3 is placed on the sizing meter 4 and the removal side is scrap rice. To the measuring instrument 5 for each. Particle size meter 4
The hopper 7 of the grain raiser 8 is connected to the discharge side of
A temporary storage tank 9 is connected to the upper end discharge port of.

In addition, the discharge side of the sizing meter 4 and the hopper 7
A switching device 18 is provided between and, and a sample inspection system 6 to be described later is connected to a branch path of the switching device 18.

On the other hand, the outlet of the temporary storage tank 9 is connected to the distribution conveyor 10 via the switching device 19. Below the distribution conveyor 10, the graders 11A, 11B, 11C, which are grain size sorting machines for sorting brown rice other than sample grains,
And an appropriate switching device (not shown) is provided so that the brown rice of the distribution conveyor 10 is selectively supplied to any one of the graders 11A, 11B, and 11C. The graders 11A, 11B, and 11C have different mesh sizes, and for example, the grader 11A has 1.8
A mesh size of 5 mm, 1.90 mm for the main grader 11B, and 1.95 mm for the main grader 11C is used.

On the discharge side of each of the graders 11A, 11B and 11C, a high quality grain conveyor 12 and a low quality grain conveyor 1 are provided.
3 is arranged, and the remaining side of each grader is provided with a good quality grain conveyor 12
In addition, the removal side of each grader is connected to the low-quality grain conveyor 13. The end of the quality grain conveyor 12 is the quality grain meter 14
The discharge side of the high-quality grain meter 14 is connected to the grain-raising machine 17, a switchable high-quality grain sample outlet 20 is provided here, and the discharge side is connected to the taste meter 16 and the ingredient measuring instrument 21. To do. The end of the low-quality grain conveyor 13 is connected to a low-quality rice tank (not shown) via the low-quality grain measuring device 15. In addition, the discharge port switching device 1 of the temporary storage tank 9
The other branch of 9 is connected to the good quality grain conveyor 12.

Next, the sample inspection system 6 connected to one branch path of the above-mentioned switching device 18 will be described. This sample inspection system 6 takes out a small amount of sample grains from the whole brown rice and inspects it, and thus, for brown rice other than the sample grains, a criterion for distinguishing between high quality grains and low quality grains, that is, three types of graders 11A to 11C. This is for deciding which mesh size to use.

As shown in FIG. 1, the switching device 18 described above is used.
The hopper 25 and the sample grain raiser 26 are provided on one of the branch paths.
A sample grader 27 for classifying the sample particles into four classes according to the particle size is provided via. This sample grader 27 uses, for example, a rotating inclined cylindrical sieve, and its meshes have a starting end portion 27A of 1.85 mm, an intermediate portion 27B of 1.90 mm, and an end portion 27C of 1.95 m.
m.

The starting end portion 27A and the intermediate portion 27
B, a measuring device 28 below the end portion 27C and the outlet 27D.
A, 28B, 28C and 28D are arranged, and a conveyor 29 is arranged on the discharge side of these weighing devices 28A to 28D. The end of the conveyor 29 is connected to the taste meter 33, and the discharge side of the taste meter 33 is connected to the hopper 30 of the discharge grain-raising machine 31. Scales 28A, 28B, 28C, 2
The 8D and the taste meter 33 are electrically connected to the input side of the central processing unit 32 for controlling each unit as described later.
In addition, on the input side of the central processing unit 32,
Each taste meter, etc., and each switching device 18, 19, on the output side
In addition to 20, switching devices of the distribution conveyor 10 and the like are electrically connected.

Next, the operation of the brown rice sorter of the first embodiment will be described. First, brown rice that has been received by the receiving hopper 1 is raised by the grain raising machine 2, and scrap rice is separated by the scrap rice removal grader 3. The separated waste rice is stored in the waste rice tank after passing through the waste rice weighing machine 5. On the other hand, the sizing that remains in the scrap rice removal grader 3 is weighed by the sizing meter 4. Then, the switching device 18 is switched from the hopper 7 side to the sample inspection system 6 side only for a short time, and the sized particles after weighing are supplied to the sample inspection system 6 as sample particles.

In FIG. 1, the sized or sampled grains supplied from the switching device 18 are fed from the hopper 25 to the grain raising machine 2
It rises at 6 and supplies it to the sample grader 27. In the sample grader 27, as described above, the starting end portion 27A,
Since the meshes of the intermediate portion 27B and the terminal portion 27C are different, the particle size of the supplied sample particles is 1.85.
If the particle size is less than mm, the particle size is 1.85 to 28A.
If the diameter is 1.90 mm, the particle size is 1.90 to the weighing machine 28B.
For ~ 1.95 mm, the particle size is 1.9 in the weighing machine 28C.
Those having a diameter of 5 mm or more flow out to the weighing device 28D, are sorted into four types of classes, and are weighed.

Next, the sample grains of each grade weighed by each of the weighing devices 28A to 28D are sequentially supplied to the taste meter 33 by the conveyor 29 for each grade, and the respective taste values are detected.
The taste value for each class detected by the taste meter 33 is input to the central processing unit 32.

In the central processing unit 32, on the basis of the taste value for each class detected by the taste meter 33, the grain size value which is the criterion for distinguishing between the good quality grain and the low quality grain of the brown rice that has been received, that is, the grader 11A-11C. Decide which one to use. For example, a graph showing the relationship between each grade of particle size and the taste value is created (see FIG. 3), and the point at which the taste value exceeds the target taste value S is obtained as a mesh based on this graph. As a result, for example, the mesh size for a certain product type A is 1.85 mm, and the mesh size for another product type B is 1.95 mm.

On the other hand, in FIG. 2, the brown rice fed from the sizing meter 4 to the hopper 7 side through the switching device 18 is put into the temporary storage tank 9 by the grain raising machine 8. As described above, when the central processing unit 32 specifies the mesh size, the fact is output to the switching device (not shown) of the distribution conveyor 10 to supply the brown rice supply path according to the specified mesh size. Is selected. Then, the switching device 19 operates to discharge the brown rice from the temporary storage tank 9, and the brown rice is distributed to the distribution conveyor 10.
And is supplied to the grader according to the designation of the central processing unit 32.

As a result, brown rice is designated as the designated grader 1.
The unpolished rice that has been selected according to the meshes of 1A to 11C and remains on the grader passes through the high-quality grain conveyor 12 and the high-quality grain measuring device 14
Further, the brown rice removed from the graders 11A to 11C is separately stored in the low-quality grain weighing machine 15 via the low-quality grain conveyor 13. After that, the quality grains weighed by the quality grain scale 14 are carried out by the grain raising machine 17 to the next step, for example, the shipping step. The brown rice after weighing is properly taken out by the switching device 20 to the high-quality grain taster 16 and the taste is inspected.

As described above, in the first embodiment, a part of unpolished rice to be selected is sampled as a sample grain, and based on the measurement of the taste of this sample grain, the selection degree of the whole unpolished brown rice is designated. And Therefore, in the past, the selection scale was selected approximately only by the size of the particle size, whereas the actual taste value can be reflected in the selection of this grader in the first embodiment. This grader has the advantage that a proper grader can be selected at all times, the skill of the operator is not required, and a certain taste can always be secured and the quality can be stabilized.

Next, a second embodiment, which is a structural example related to the first invention, will be described. The second embodiment has a sample inspection system 41 as shown in FIG. 4 in place of the sample inspection system 6 of the first embodiment. The mechanical structure of the second embodiment other than the sample inspection system 41 is
This is similar to the first embodiment.

The sample inspection system 41 in the second embodiment has the following configuration. Switching device 18 (see FIG. 2)
The hopper 42 and the sample grain refiner 43 are provided on one of the branch paths.
Is connected, and the switching device 44 is connected to the upper end discharge port of the sample grain raising machine 43. A forward / reverse rotatable distribution conveyor 45 is connected to one outlet of the switching device 44, and one end of a high-quality grain conveyor 46 capable of regular rotation is connected to the other outlet of the switching device 44. A switching device for arranging three sample graders 47A, 47B, and 47C below the distribution conveyor 45 and supplying grains to any one of these three sample graders on the distribution conveyor 45 ( (Not shown). Sample grader 4
The mesh size of 7A, 47B, 47C is, for example, 1.85 mm,
They are different, such as 1.90 mm and 1.95 mm. These three sample graders 47A, 4
On the remaining side of 7B and 47C, the high-quality grain conveyor 46 described above is provided.
And a low-quality grain conveyor 48 on the removal side.

A taste meter 49 is connected to one end of the distribution conveyor 45. The end of the good quality grain conveyor 46 is connected to the distribution conveyor 45 via the return grain raising machine 50. Also,
A hopper 52 having a switching device 51 is further connected to the end of the high-quality grain conveyor 46, and one discharging path of the switching device 51 is connected to the hopper 54 of the grain raising machine 53 for discharging, and the other discharging path is a taste meter 55. Connect to.

The operation of the second embodiment will be described. Now, the sized particles, that is, the sample particles supplied from the switching device 18 are moved up from the hopper 42 by the sample grain raising machine 43 and transferred from the switching device 44 to the distribution conveyor 45.
Then, first, the sample particles are supplied to the taste meter 49, and the taste value of the entire sample particles is measured.

Next, based on the detected taste value of the whole sample grain, it is judged whether or not it is necessary to carry out mesh control described later. That is, when the taste value of the entire sample grain is a standard value, it is determined that it is not necessary to perform the mesh control described later. In this case, a sample grader having a standard mesh, for example, a sample grader 47B is used for selecting the sample grains.

On the other hand, when the taste value of the whole sample grain is not a standard value, it is judged that the mesh control described later needs to be performed. In this case, first, the quality rice conveyor 4
6 and the return grain raising machine 50 are used to feed the sample grains to the sample graders 47A, 47B, 47C in order from the smallest mesh size to the largest mesh size, thereby sorting the sample grains by particle size. . The sample grains of each selected class are raised again by the return grain raising machine 50, multiplied by the taste meter 49, and based on the detected value of each class, as in the first embodiment, as shown in FIG. Create a relational graph of mesh and taste like.

Then, based on the relationship graph between the mesh size and the taste, the mesh size control, that is, the control related to the switching of the sample grader used for selecting the sample grains is performed. This mesh control is the same as the control of the above-described first embodiment, and based on the designation of the sample grader, the central processing unit outputs a control output to the switching device of the distribution conveyor 45, and the flow path of the sample particles is changed. By switching to a predetermined sample grader, for example, the sample grader 47C, the sample particles are sorted.

The taste of the high-quality rice after selection by the sample grader is detected by the taste meter 55, and the detected value is compared with a predetermined reference value to determine whether or not the sample grader is properly selected. Is determined. The result of this judgment is fed back to the selection of sample grader,
When the taste value is smaller than the reference value, the mesh size is set to be small, and when the taste value is larger than the reference value, the mesh size is set to be large.

On the other hand, in conjunction with the determination of the sample grader in the sample inspection system 41, a control signal is output from the central processing unit to the switching device of the distribution conveyor 10 (see FIG. 2), and the sample inspection meter 41 is operated. A book grader having the same mesh as the determined sample grader is selected as a book grader for the whole brown rice. Therefore, brown rice other than the sample grains is always supplied to the main grader having the same mesh as the sample grader for selection. The subsequent operation of the second embodiment is the same as that of the first embodiment.

As described above, in the second embodiment, in controlling the mesh of the sample grader based on the analysis of the sample particles, the taste of the whole sample particles is measured by the taste meter 49 in advance, and the mesh control is performed by this. Since it is configured to determine whether or not it is necessary to perform, the mesh control is executed only when the need is high, and there is no waste of control. Further, in this embodiment, after the selection by the sample grader, the taste meter 55 measures the taste of high quality grains and the result is fed back to the switching of the sample grader. Can always make proper selections, and thus stabilize the taste of finished rice,
There is an advantage that the yield can be stabilized by preventing waste of brown rice.

Next, a third embodiment corresponding to the second aspect of the invention will be described.

Generally, it can be considered that the taste value and the price are substantially proportional to each other. Therefore, in order to improve the price of good quality rice, it is only necessary to increase the grader scale to increase the taste value. However, as shown in the graph of FIG. 5, in the same group of brown rice, there is a relation that the yield decreases when the taste value is increased. Therefore, if the grain size is too large considering only the improvement of the flavor value, A lot of brown rice that does not reach the size will be wasted, the yield will decrease, and the overall profit will decrease. Therefore, in order to improve the profit, it is necessary to set the optimum selection scale in consideration of not only the taste value but also the yield.

Therefore, the purpose of the third embodiment is to prevent the waste of the brown rice according to the property and quality of the brown rice by preventing the yield from being excessively lowered and obtaining high quality grains having the best taste. . The mechanical configuration of the third embodiment is the same as that of the first embodiment described above, and only the control is different as follows, so the operation will be described here with reference to FIGS. 1 and 2.

In FIG. 2, first, the brown rice received in the receiving hopper 1 is supplied to the scrap rice removing grader 3 to separate the scrap rice, and then supplied to the sample inspection system 6 via the switching device 18.

In FIG. 1, the supplied sized particles, that is, the sample particles, are supplied to the sample grader 27, and four grades are selected based on the particle size. The sorted sample particles are weighed by the weighing devices 28A to 28D, respectively.
The detection values of these weighing devices 28A to 28D are input to the central processing unit 32. On the other hand, the measured sample particles of each class are sequentially supplied to the taste meter 33 by the conveyor 29, and the taste values are detected. The detected taste value of each class is also input to the central processing unit 32.

In the central processing unit 32, first, the yield in the case of using the respective graders (11A to 11C in FIG. 2) for consigned unpolished rice from which sample grains were taken out based on the weight value for each class of grain size Is calculated for each grader. Next, based on the calculated yield and the taste value of each class input from the taste meter 33, the profit is calculated for each of the cases in which each of the graders 11A to 11C is used. Then, the book grader showing the maximum profit is designated as the book grader used for selecting the unpolished rice other than the sample grains, and is output to the switching device of the distribution conveyor 10. Therefore, a brown rice supply path is selected according to the output, and the consigned brown rice is selected by the grader designated by the central processing unit 32. The subsequent operation of the third embodiment is similar to that of the first embodiment.

As described above, in the third embodiment, sample grains are selected according to particle size, the yield is calculated from the weight value of each selected class, and each sample is prepared based on the calculated yield and the taste value of each class. We made a trial calculation of the profit when using a grader, and selected this grader to maximize this profit. As described above, in the third embodiment, in selecting the grader, not only the taste value of the sample grains is considered in the same manner as in the first embodiment, but also the yield is taken into consideration. It is possible to prevent adverse effects such as a decrease in yield and a decrease in profit as a whole.
There is an advantage that you can always get the maximum profit according to the quality.

Next, a fourth embodiment will be described. In the above-described first embodiment, one of a plurality of main graders having different meshes is used based on the taste value of each class of sample grains.
By selecting one and selecting it using the selected specific book grader, good quality grains having a taste value of a certain value or more were obtained. However, there is a limit to the number of book graders that can be installed, and it is not possible to make detailed adjustments to the selection pattern.Therefore, this book grader is selected so that the taste value of good quality grains is slightly higher than the original target taste value. To do. Therefore, brown rice may be wasted between the target taste value and the taste value of good quality grains. Therefore, the purpose of the fourth embodiment is to mix a proper amount of low quality grains having a lower tasting value than the target taste value into the high quality grains having a slightly higher tasting value than the target taste value to obtain the tasting value of the good quality grain as the original target taste. By matching the value, the whole brown rice can be used efficiently and its waste can be prevented.

As shown in FIG. 6, high-quality grain tanks 62, 6 of each grade are provided through the distribution conveyor 61 to the upper end discharge port of the grain-raising machine 17 connected to the high-quality grain weighing device 14 (see FIG. 2).
Connect 3, 64. Then, this grader 11A-1
Each of the good quality grain tanks 62, 63, 6 is fed with 1C (see Fig. 2) brown rice which is sorted according to rank and whose taste value is measured.
It is housed in 4 according to each class. Then, the good quality grains are taken out from the tank (for example, the tank 64) that exceeds the standard taste value. Next, of the tanks 62, 63 below the standard taste value,
Brown rice is taken out in order from the one having the largest particle size (tank 63), and is mixed with the good quality particles previously taken out from the tank 64. Here, in the case where the grain size of the brown rice of each grade and the weight ratio of the brown rice of each grade to the whole are distributions as shown in FIG. 7 and FIG. In order to determine the amount of brown rice from 63, the central processing unit performs the following calculation.

Assuming that the target taste value is 75, the average taste value of brown rice having a grain size of 1.80 mm or more is 7 from the table of FIG.
7.1, the weight is 70% of the whole. Also, the particle size is 1.7
The average taste value of brown rice of 5 mm or more is 74.1. From this, in order to obtain brown rice with a target taste value of 75, a grain size of 1.8
It is understood that the particles having a particle size of 1.75 to 1.80 mm should be blended in a certain ratio with the particles having a diameter of 0 mm or more. This 1.75 ~
When the blending ratio of brown rice of 1.80 mm is χ [%], 70 × 77.1 + χ × 60 = (70 + χ) × 75 ∴χ = 9.8 [%] That is, all brown rice with a grain size of 1.80 mm or more In addition to,
Brown rice with a grain size of 1.75 to 1.80 mm is 9.
If only 8% is mixed, the overall taste value is 75% of the target taste value.
It turns out that

The weight ratio of 9.8% of the whole brown rice to the brown rice having a grain size of 1.75 to 1.80 mm is X.
When [%] is satisfied, X = (9.8 / 15) × 100 = 65.3 [%]. That is, 65.3% of the brown rice having a grain size of 1.75 to 1.8 mm may be blended with brown rice having a grain size of 1.80 mm or more. The yield at this time is improved by 9.8% to 70 + 9.8 = 79.8 [%].

Based on this calculation result, the total amount of the tank containing brown rice having a grain size of 1.80 mm or more, and the grain size of 1.75.
9.8% of the storage capacity of the tank 63 for storing brown rice of 1.80 mm is discharged by controlling a constant-quantity discharging device (for example, a rotary valve) of each tank.

As described above, in the fourth embodiment, the whole brown rice is classified according to the particle size, the taste value and the weight value of each grain are detected, and based on the both detected values, the grain rice of which particle size is blended in what proportion. It was calculated whether the target taste value could be obtained, and brown rice of each grade was mixed according to the calculation result to obtain brown rice according to the target taste value. Therefore, it is possible to eliminate the waste of brown rice between the target taste value and the taste value of good quality grains, so that the brown rice can be used more efficiently by improving the yield. In addition, since the taste value of good quality rice becomes the target taste value, there is an advantage that the taste can be homogenized at the shipping stage.

In this fourth embodiment, the taste value of brown rice of each class is detected and the blending ratio is determined based on the detected taste value. Taste-related components (eg protein) of each class by measuring device
If the composition is such that the brown rice of each grade is mixed so that the content rate of each taste-related component is in accordance with a predetermined reference value, the taste control at the shipping stage can be performed more accurately.

[0052]

As described in detail above, in the first invention, a part of brown rice to be selected is sampled as a sample grain, and based on the measurement of the taste of the sample grain, which sorting grain is selected for the selection of the whole brown rice. Specify whether to use a grader. Therefore,
In the past, the grader was selected approximately based only on the size of the particle size, whereas in the first invention, the actual taste value can also be reflected in the selection of the grader, and an accurate eye value can always be obtained. It is possible to select the appropriate combination, and the skill of the operator is not required.

In addition, in the second invention, in selecting the grader, the grader is selected in consideration of the yield value of the sample grains in the same manner as in the first invention, and the yield is also taken into consideration. It is possible to prevent the adverse effect that the yield is lowered too much by focusing only on the value and the profit is reduced as a whole, and it is possible to always obtain the maximum profit according to the property and quality of brown rice.

[Brief description of drawings]

FIG. 1 is a system diagram schematically showing a sample inspection system of a first embodiment.

FIG. 2 is a system diagram schematically showing a brown rice sorter of the first embodiment.

FIG. 3 is a diagram showing the relationship between grain size and taste value in a plurality of types of brown rice.

FIG. 4 is a system diagram schematically showing a sample inspection system of a second embodiment.

FIG. 5 is a diagram showing the relationship between the taste value and the yield of specific brown rice.

FIG. 6 is a system diagram showing a good quality grain tank of a fourth embodiment.

FIG. 7 is a distribution chart showing the weight percentage of specific brown rice for each grain size.

FIG. 8 is a diagram showing a weight ratio and a taste value for each grain size of specific brown rice.

[Explanation of symbols]

 6 sample inspection system 11A, 11B, 11C main grader 16 taster 27 sample grader 28A, 28B, 28C, 28D weight detector 32 central processing unit

Front page continuation (72) Inventor Sadakazu Fujioka 4818 Ami, Ami-cho, Inashiki-gun, Ibaraki Iseki Agricultural Machinery Co., Ltd. (72) Inventor Toyoyuki Takanami 4818 Ami, Ami-cho, Inashiki-gun, Ibaraki Iseki Agricultural Machinery Co., Ltd. Tsukuba Research Center

Claims (2)

[Claims] 1. A brown rice sorter for switching the flow path of brown rice by a switching device to supply the brown rice to any one of a plurality of graders having different sorting grades and to sort by the size of the grain. Sample collecting means for collecting sample particles from the unpolished rice, sample particle size selecting means for selecting the sample particles collected by the sample collecting means according to the size of the particle size, and the sample particle size selecting means Regarding the sample grains of each class, based on the taste value of each class detected by the sample taste detecting means for detecting the taste value, respectively, the sample taste detecting means, the taste value of the class above a predetermined reference value In order to select only unpolished rice, a grader designating unit that designates any one of the plurality of types of graders; Grader selection device in brown rice sorter comprising comprises a control means for controlling the switching device. 2. A brown rice sorter for switching the flow path of brown rice by a switching device to supply the brown rice to any one of a plurality of types of graders having different sorting grades and to sort by the size of grain size. Sample collecting means for collecting sample particles from unpolished brown rice, sample particle size selecting means for selecting the sample particles collected by the sample collecting means according to the size of the particle size, and the sample particle size selecting means For sample particles of each class selected, sample taste detecting means for measuring the taste value, and a composition ratio calculating means for calculating the composition ratio of the sample particles of each class selected by the sample particle size selection means, and the composition ratio Based on the composition ratio of the sample grains of each class calculated by the calculation means, for each of the plurality of types of grader, the yield when the grader is used Yield calculation means to calculate, the taste value for each class measured by the sample taste detection means, and from the yield calculated by the yield calculation means, to specify any one of the plurality of grader A grader selecting device in a brown rice sorter, comprising: a grader specifying unit; and a control unit that controls the switching device according to the specification of the grader specifying unit.