JPH04247244A - Device for adjusting light quantity of hulling rate sensor for rice-hulling and screening machine - Google Patents

Abstract

PURPOSE:To detect an exact hulling rate by adequately adjusting the light quantity during rice-hulling and screening operations at the time of detecting the hulling rate of the hulled rice in a hulling section 1 by a hulling rate sensor 26 having a light emitting element and light receiving element. CONSTITUTION:The light quantity of the hulling rate sensor 26 of the rice-hulling and screening machine equipped with the hulling section 1 consisting of a pair of hulling rolls 3, 3 making rice-hulling operations, a hulled rice air screening path 4 for air screening of the hulled rice from the hulling section 1 and a rotary screening cylinder 11 for screening the mixed rice after air screening into unhulled rice and hulled rice is adjusted in association with the operations that adjusting members, such as unhulled rice supply adjusting valve 44 of the rice-hulling and screening machine and finished rice adjusting valve 16a for adjusting the receiving area of a finished rice trough 16 of the rotary screening cylinder 11, are adjusted by detecting the hulled rice of the hulling section 1 with the optical hulling rate sensor 26 and associatively adjusting the clearance of hulling rolls 3, 3. The possibility that the quality, nature, etc., of the unhulled rice are changed is high if the adjusting members of the rice- hulling and screening machine are adjusted and, therefore, the light quantity of the hulling rate sensor 26 is adjusted again, by which the unhulled rice and the hulled rice are exactly discriminated and the accuracy of the detection of the hulling rate is enhanced.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention has a phushu section that performs hulling work, a wind sorting section that wind-sorts the rice that has been removed from the phushu section, and a rotating part that has a large number of pot holes on its inner circumferential surface. This can be used in a hulling sorter equipped with a mixed rice sorting section for sorting mixed rice such as paddy and brown rice using a sorting tube, etc., and relates to a hull removal rate sensor light amount adjustment device for a hulling sorter.

0002

[Prior Art] A shedding section that performs hulling work, a wind selection section that wind-sorts the rice that has fallen from the hulling section, and a large number of pots on the inner periphery for storing the mixed rice after wind selection in the wind selection section. There is a hulling sorting machine that is equipped with a mixed rice sorting section that sorts rice using a rotating sorting cylinder with holes, etc. In such a hulling sorting machine, an optical hulling rate sensor detects the grains from the hulling section. There is a system that detects the hulling rate of fallen rice and adjusts the gap between the hulling rolls in the hulling section accordingly, and performs hulling sorting work while maintaining a predetermined hulling rate.

0003

[Problem to be Solved by the Invention] In such a conventional device, while supplying the fallen rice to the light emitting area of the pulp removal rate sensor, it is necessary to calculate the amount of transmitted light or reflected light with respect to the amount of light projected by the pulp removal rate sensor. It is configured to distinguish between paddy and brown rice and detect the shedding rate. In this case, there was a problem that if the type of dropped rice changed, the amount of transmitted light or the amount of reflected light relative to the amount of light emitted by the hulling rate sensor would change, making it impossible to accurately detect the hulling rate. Therefore, the present invention is aimed at adjusting the adjustment parts of the hulling section, wind sorting section, and mixed rice sorting section of the huller, that is, in relation to the fact that there is a high possibility that the variety of paddy has been changed. By readjusting the amount of light irradiated by the husking rate sensor, the husking rate of the husked rice is accurately detected.

0004

[Means for Solving the Problems] In order to solve the problems of the prior art, the present invention takes the following technical measures. That is, the present invention comprises a hulling section 1 consisting of a pair of hulling rolls 3, 3 that performs hulling work, a wind selection section 4 that wind-selects the rice that has been removed from the hulling section 1, and This hulling and sorting machine is equipped with a mixed rice sorting section 11 that sorts mixed rice into paddy and brown rice, and the rice that has been removed from the hulling section 1 is detected by an optical hulling rate sensor 26 and the rice is hulled. - The gap between the rules 3 and 3 is configured to be adjustable in relation to each other, so that any one or more than a predetermined number of adjustment parts of the shedding part 1, wind sorting part 4, and mixed rice sorting part 11 are adjusted. Relatedly, the present invention is a husking rate sensor light amount adjustment device for a huller sorting machine, which is characterized in that the amount of light of the husking rate sensor 26 is adjusted.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention shown in the drawings will be described below. First, the configuration of the embodiment will be explained. Reference numeral 1 denotes a husking section 1, and this husking section 1 is composed of a paddy hopper 2, a pair of husking rolls 3, 3, and the like. Reference numeral 4 denotes a sloughed rice winding path, in which the sloughed rice from the husking section 1 is sorted by the sorting wind generated by the suction fan 5 in front, and the rice husks are passed from the suction fan 5 through the dust exhaust pipe 6 to the machine. The mixed rice of brown rice and paddy is discharged to the outside and is supplied falling to the sliding rice receiving trough 7 below. The mixed rice that has fallen into the fallen rice receiving gutter 7 is fried by the mixed rice lifting machine 8 into the mixed rice hopper 9, and is conveyed from the mixed rice hopper 9 to the starting end of the supply gutter 14 in the rotary sorting cylinder 11. It is the composition.

10 is a sorting case, and this sorting case 1
0 has a supply side end (right side in FIG. 1) and a discharge side so that the rotary sorting cylinder 11, which has a large number of pot holes 11a, 11a, ... on its inner peripheral surface, can rotate around the horizontal axis. The end (left side in FIG. 1) is rotatably supported by drive rollers 12, 12. Inside this rotary sorting tube 11, there is a supply helix 1.
A supply gutter 14 with a finishing rice helix 15 and a finishing rice gutter 16 with a finishing rice helix 15 are installed horizontally.

When disposing the supply gutter 14 and the finished rice gutter 16 inside the rotary sorting cylinder 11, as shown in FIG. In addition, a finishing rice gutter 16 is arranged on the side of the rotary sorting tube 11 that rotates from the top to the bottom, and the mixed rice scraped up low by the pot holes 11a, 11a... of the rotary sorting tube 11 is transferred to the supply gutter 14. The rice is dropped onto the ground and transferred to the terminal end of the supply gutter 14 by the supply helix 13, and the feed gutter 14 also functions as a mixed rice receiving gutter. Note that 16a is a finished rice adjustment valve that adjusts the receiving area of the finished rice gutter 16.

The discharge side end of the finishing rice gutter 16 is connected to a finishing rice receiving trough 19 via a finishing rice flow lower cylinder 17 and a finishing rice flow grain plate 18, and the brown rice is passed through the finishing rice flow lower cylinder 17 and the finishing rice flow. While falling from the grain plate 18 to the finished rice receiving trough 19, it is wind-selected,
The brown rice that has flowed down into the finished rice receiving trough 19 is taken out of the machine via the finished rice grain lifting machine 20. Rotary sorting tube 1
The grains mainly composed of unhulled rice after sorting flowed to the discharge side end of 1, fall into the lower paddy receiving trough 21, and are returned to the hulling section 1 by the paddy hoisting machine 22 through the return paddy passage 23. , it is subjected to the shedding action again in the shedding section 1.

The lower front end of the sorting case 10, that is, the lower part on the side of the shedding section 1, is supported by a horizontal shaft 24.
0 and the rear part of the rotary sorting cylinder 11 are supported so as to be rotatably adjustable in the vertical direction, and 25 is an inclination adjustment means for adjusting the inclination of the sorting case 10. Next, FIGS. 6 to 8 will be explained. Reference numeral 26 denotes a hulling rate sensor that has a light emitting element 27 and a light receiving element 28 and detects the hulling rate of the rice that has been scraped from the hulling unit 1; It is provided on the conveyance path that conveys the fallen rice to the rotary sorting cylinder 11, and sampled grains are supplied from the conveyance path. This scrapping rate sensor 26 is connected from a light emitting element 27 to a light receiving element 2.
Sample grains of fallen rice are passed one by one through the irradiation area irradiated by 8, and the amount of transmitted light received by the light receiving element 28 when the sample grains are irradiated is detected. This is a configuration that converts it into voltage. The light amount adjustment device 29 is connected to an arithmetic control unit 30 containing a CPU, and has an output circuit 31 that inverts the output voltage to adjust the amount of light from the light emitting element 27.
An input circuit 32 to which a voltage converted from the transmitted light amount of each grain detected in step 8 is sent, and a grain signal detection circuit 33 that detects a signal for each grain are provided, and the light amount by the light emitting element 27 is set in advance. This is a configuration in which the adjustment is automatically controlled so that the light amount is within an appropriate adjustment range based on the reference voltage set. In this embodiment, the removal rate sensor 26 is configured to be of a transmission type, but it may be of a reflection type.

The calculation process of the skipping rate in the arithmetic control section 30 will be explained below. FIG. 8 shows a transmittance grain number distribution curve (hereinafter referred to as transmitted light amount distribution) that is a graph of the frequency distribution of the transmittance of the amount of transmitted light for each grain in a predetermined number of sample grains detected by the pulp removal rate sensor 26. ) 34 general form. The process of calculating this removal rate is as follows:
■ Calculate the brown rice average block value KG and the paddy average block value KM from this transmitted light amount distribution 34, ■ Transmitted light amount distribution 34
The boundary block value that is the boundary between brown rice G and paddy M in is calculated as the threshold value K, and ■With this threshold value K as the boundary,
This process is performed through each process in which the hulling rate is calculated based on the number of sample grains on the brown rice G side and the number of sample grains on the paddy M side.

This threshold control will be explained in more detail below. As shown in FIG. 8, the transmittance of the amount of transmitted light is determined by dividing the range from the maximum transmittance to the minimum transmittance into a predetermined number N, and the number of sample grains for one de-pulling rate detection is, for example, 2000 grains, and The time for detection by the pulse rate sensor 26 is 20 seconds, the number of blocks is 64, and the output voltage corresponding to each average amount of transmitted light of the total number of blocks N is set as a signal voltage of 0 to 1.
It is set to output as 0V (volt). The brown rice average block value KG is the average value of brown rice, and this calculation is based on the number of grains when the number of brown rice grains is the peak value in FIG. The integrated value of the block light amount for the number of grains within the range of 25 grains) is divided by the sum of the number of grains. That is, the average amount of transmitted light per grain of brown rice at its peak value is determined. When the number of blocks with a difference of 25 grains or less from the peak grain number is less than 10 blocks, the calculation is performed from the top 10 blocks in the same manner as above. The paddy average block value KM is the average voltage value of the paddy,
This calculation method is based on the total sample grains (for example, 2000 grains)
A block obtained by cutting, for example, 5 grains from the paddy side is defined as the maximum block, and the value obtained by dividing the sum of the light amount integration of a certain number of blocks (for example, 10 blocks) from this paddy side by the number of grains. That is, the average amount of transmitted light per grain of rice M peak value portion is determined. In this way, when the average block value KG of brown rice and the average block value KM of paddy are obtained, these brown rice
A threshold value K, which is a boundary block value, is calculated from the average block values KG and KM of paddy using the following equation.

K=(KM-KG)×k+KG Note that this k is a constant, and is set as follows, for example, based on the number of grains in the top 10 blocks from which the average paddy block value KM was calculated. Less than 100 grains ……k=0.55100~14
9 grains...k=0.47 150 grains or more...k=0.40 In calculating the shedding rate based on the distribution of sample grains of fallen rice,
The distribution of the transmittance of the irradiated light from the hull removal rate sensor 26 is not a distribution state in which brown rice G and paddy M are completely separated, but a distribution state in which the threshold value K is located at the portion where the two overlap. The accuracy of the calculated shedding rate is determined by the threshold K,
By adjusting the boundary block position based on this number of grains, it is possible to improve the accuracy of the calculated pulp removal rate relative to the actual pulp removal rate.

[0013] Once the threshold value K is determined in this way,
For example, as shown in the following formula, the total number of sample grains (for example, 2000
The ratio of the total number of grains of brown rice G on the brown rice side is calculated from the threshold value K for grains) and is used as the dehulling rate. Slipping rate = {(total number of sample grains) - total number of grains in blocks above threshold value K)/total number of sample grains} x 100 (%)
When the calculated shedding rate is calculated in this way, calculation control is performed so that the calculated shedding rate becomes the set shedding rate, that is, if the calculated shedding rate is higher or lower than the set shedding rate. Part 3
A command signal to open or close the depulping rolls 3 and 3 is output from 0 to the roll gap adjusting motor 36 that adjusts the roll gap adjusting means 35, and the depulping roll gap adjusts to the set depulping rate. It is adjusted so that

Light amount adjustment will be explained based on FIG. 7. The transmitted light amount distribution 34 is based on the light emitting element 27 of the shedding rate sensor 26.
Move horizontally by changing the amount of light. A light intensity adjustment setting range L suitable for distinguishing between brown rice G and paddy M is determined, and the peak of the brown rice average block of the transmitted light intensity distribution 34 is determined.
The light amount adjustment of the pulp removal rate sensor 26 is configured to end when the brown rice average block value KG, which is the value KG, falls within this light amount adjustment setting range L.

Next, FIG. 5 will be explained. Operation switch 37, stop switch 38, buzzer stop switch 39,
A cylinder rotation down switch 40 that lowers the rotation speed of the rotating sorting tube 11, a cylinder rotation up switch 41 that increases the rotation speed of the rotation sorting tube 11, an automatic/manual changeover switch 42, a wet/sticky changeover switch 43, and a cylinder rotation up switch 41 that increases the speed of the rotation sorting tube 11. A supply amount switch 45 that sets the opening degree of the paddy supply control valve 44, a hulling rate setting switch 46 that sets the hulling rate of the scraped rice that is slipped off in the hulling section 1,
A model changeover switch 47 for changing the model of the rice huller sorting machine;
a grain sensor 48 that detects the presence or absence of grains in the paddy hopper 2;
A roll development sensor 4 detects whether or not the spacing between the de-pupping rolls 3, 3 is widened so that they do not perform the de-pupping action.
9 is connected via the matrix switch 50 to a control unit,
It is connected to an arithmetic control section 30 consisting of a CPU incorporating an arithmetic section and a register section, a program memory, and an arithmetic memory.

[0016] Also, a rotation speed sensor 51 for detecting the rotation speed of the rotary sorting cylinder 11, a hulling rate sensor 26 for detecting the hulling rate of dropped rice, a current detection sensor C/T 52, and a source voltage sensor 53. , a shutter opening sensor 54 that detects the opening of the paddy supply control valve 44 in the husking section 1, a layer thickness sensor 55 that detects the thickness of the grain layer to be sorted in the rotary sorting cylinder 11, and a grain receiver in the finishing rice gutter 16. A finishing lever sensor 56 that adjusts the area, a supply side grain scattering sensor 57 that can detect the scattering state of grains on the supply side of the finishing rice gutter 16, and an intermediate part that can detect the scattering state of grains in the middle part of the finishing rice gutter 16. The grain scattering sensor 58 is configured to be input to the calculation control section 30 via an input interface.

Further, a shutter opening adjustment motor for adjusting the opening of the electromagnetic contactor 60 of the main motor 59 and the paddy supply regulating valve 44 is connected from the arithmetic control unit 30 via the output interface and the drive circuit. 61, a roll gap adjustment motor 36 that adjusts the gap between the depulpering rolls 3, 3, a cylindrical rotation adjustment motor 63 that adjusts the increase or decrease in the number of rotations of the rotary sorting cylinder 11, and an alarm for abnormal conditions. A control command signal is outputted to a buzzer 64 that outputs a control signal, and the arithmetic control unit 30 includes a light amount adjustment device 29 that adjusts the amount of light from the shedding rate sensor 26 via a latch and a D/A converter. connected and also connected to L via the latch.
The configuration is such that an operation instruction message and the details of the abnormality are displayed on the CD display device 65.

Next, the control contents of the arithmetic control section 30 will be explained. (1) First, when the husking rate setting switch 46 is set to a predetermined scale and the operation switch 37 is operated, each rotating part of the hulling and sorting machine is driven. Then, the depu roll 3,3
In other words, the opening command signal from the arithmetic control section 30 is sent to the roll gap adjustment motor 36, the roll gap adjustment means 35 is operated, and the gap between the de-pulling rolls 3, 3 is maintained for a predetermined period of time. When the CT 52 detects a non-contact state in which the load current value detected by the CT52 that detects the load current does not change, the gap between the de-protrusions 3 and 3 is narrowed, and then an increase in the load current value is detected and the de-protrusion is performed. When a slight contact between the protruding rolls 3, 3 is detected, the roll gap adjusting means 35 is adjusted to open for a predetermined period of time to open the gap between the unpropelled rolls 3, 3 for a predetermined period of time, and the initial gap (for example, 1 mm) is maintained. The settings are made. ■Next, the arithmetic control section 3
The opening command signal from 0 is output to the shutter opening adjustment motor (not shown) for a predetermined period of time, and the paddy supply adjustment valve 4 of the hulling section 1 is opened.
4 is set to a predetermined opening degree (for example, 10 mm), the hulling operation is started, and then a control command signal is sent to the shutter opening degree based on the adjustment setting of the supply amount switch 45 that sets the efficiency. It is sent to the adjustment motor 61, and the paddy supply adjustment valve 44 is adjusted to the set efficiency opening degree. Next, the pulp removal rate control is started, and first, a light amount adjustment command signal is output to the light amount adjustment device 29, the light amount of the pulp removal rate sensor 26 is adjusted, and the light emitting element 27 is appropriate for distinguishing between paddy and brown rice. The amount of light is adjusted accordingly. Next, the amount of transmitted light of the grain that has passed through the pulp removal rate sensor 26 is transmitted from the light receiving element 28 to a light amount-voltage conversion circuit,
The voltage signal is converted into a voltage and inputted to the arithmetic control section 30 via the input circuit 32, sample hold circuit, and A/D conversion circuit, and the voltage signal is inputted via the input circuit 32 and the grain signal detection circuit 33 to the arithmetic operation control section 30. When the voltage signals of a predetermined number of sample grains are read by an interrupt input to the CPU of the control unit 30, the pulp removal rate is calculated. ■Next, the control reference shedding rate set by the shedding rate setting switch 46 in the arithmetic control unit 30 and the calculated detected shedding rate are compared, and the control standard shedding rate is higher than the calculated shedding rate. Alternatively, if it is low, an open or close command signal is output to the roll gap adjustment motor 36 or the shutter opening degree adjustment motor 61, and the gap of the shredding rolls 3, 3 or the paddy supply control valve 44 is opened by a predetermined amount. Alternatively, if the calculated husking rate is within the range of the standard husking rate, no control command signal is output, and the hulling operation is performed while maintaining the same opening degree. It is something that ■ In this way, the hulling and sorting work is performed while the hulling rate sensor 26 detects the hulling rate of the dropped rice.
Adjustment of cylinder rotation increase switch 41, mochi/ruchi selection switch 43, supply amount switch 45, and pulping rate setting switch 46, or grain sensor 48, roll development sensor 49, rotation speed sensor 51, and pulping rate sensor 26, CT52
, the shutter opening sensor 54, the layer thickness sensor 55, the finishing lever sensor 56, the supply-side grain scattering sensor 57, and the intermediate grain scattering sensor 58. If it is detected that there is a possibility that the type of paddy has been changed, a light amount adjustment command signal is output to the light amount adjustment device 29, and the light amount of the hulling rate sensor 26 is adjusted again to adjust the detected hulling rate. It can be made accurate. It goes without saying that the present invention can be extended to other devices other than the above-mentioned switches or sensors. (2) Next, the light intensity adjustment of the husking rate sensor 26 when the hulling operation is restarted after the hulling and sorting operation has been temporarily interrupted will be explained. If the grain sensor 48 detects the absence of paddy and also detects the presence of grains after a predetermined period of time has elapsed, in such a case, the quality of the paddy may have changed, so the shedding rate The light intensity of the sensor 26 is adjusted again to match the restarted paddy, and the hulling sorting work is performed while ensuring the accuracy of the calculated hulling rate.

Furthermore, if the operation is interrupted while the grain sensor 48 continues to detect the presence of grains, the same variety of paddy is often continuously supplied, so in such a case, , the re-adjustment of the light amount of the pulp removal rate sensor 26 is omitted, thereby simplifying the control. Further, a work completion sensor that can detect the work completion process, for example, a sensor (not shown) that can detect the opening degree of a residual grain discharge valve (not shown), or a sensor (not shown) that can detect the opening of a residual grain discharge valve (not shown), or a sensor (not shown) that can detect the opening of a residual grain discharge valve (not shown), or The possibility of changing the paddy type may be detected by detecting the presence or absence of a cylindrical inclination sensor (not shown) capable of detecting the inclination adjustment state, and the light amount of the hulling rate sensor 26 may be similarly adjusted.

Furthermore, a storage device (not shown) capable of storing the light intensity adjustment value of the hull removal rate sensor 26 made during the hulling and sorting work is provided.
If the configuration is such that the work can be started with the previous light intensity adjustment value when work is restarted, the light intensity adjustment at the start of work can be omitted, and the start time of the shedding roll gap adjustment based on the shedding rate can be brought forward. . Further, when adjusting the light amount of the shedding rate sensor 26 at the beginning of the work, the light amount adjustment may be started from the previous light amount adjustment value.

[0021] In addition, the removal rate sensor 26 or the moisture meter (
It may also be configured to detect the shedding rate or moisture content of the fallen rice using a method such as (not shown), determine a change in variety based on a predetermined change in the shedding rate or moisture content, and adjust the amount of light again. FIG. 12 is a flow chart thereof. Next, the operation of the embodiment will be explained.

When carrying out the hulling operation, raw rice is supplied to the rice hopper 2, and the rotating parts of the hulling and sorting machine are driven. Then, the paddy supplied from the paddy hopper 2 to the dehulling rolls 3, 3 is subjected to the dehulling action, the scraped rice is wind-selected in the lower scraped rice wind sorting path 4, and the rice husks are passed through the dust exhaust pipe 6. is ejected from the aircraft. The mixed rice of brown rice and paddy is dropped and supplied to the sliding rice receiving trough 7, and is lifted to the starting end side of the supply trough 14 on the rotary sorting cylinder 11 side via the mixed rice hopper 9 in the mixed rice lifting machine 8. The liquid is supplied to the supply side end of the rotary sorting tube 11 by the supply helix 13 in the supply gutter 14 .

Next, the mixed rice is scraped up by the pot holes 11a, 11a, . . . of the rotary sorting cylinder 11 rotating clockwise in FIG. The rice mixed with long grain paddy and some brown rice is scraped up into the supply gutter 14 or the rotary sorting cylinder 1.
1 and will be sorted out. Then, the unsorted mixed rice that has fallen into the supply gutter 14 is fed again into the rotary sorting tube 11 from the conveyance terminal end of the supply gutter 14 by the supply helix 13, and is re-sorted.

The brown rice that has fallen into the finishing rice trough 16 is conveyed by the finishing rice helix 15 to the finishing rice flow lower tube 17, passes through the finishing rice grain plate 18, and falls into the finishing rice receiving trough 19, where it is sorted by the sorting wind. The rice is sorted by wind and taken out of the machine by the finished rice lifting machine 20. In addition, the grains, mainly consisting of unhulled rice, sent to the discharge side end of the rotary sorting cylinder 11 flow into the lower paddy receiving trough 21 and are returned to the return paddy passage 23 by the paddy lifting machine 22. , it is subjected to the shedding action again in the shedding section 11.

[0025]

Effects of the Invention During the hulling and sorting work as described above, the hulled rice that has been hulled by the hulling rolls 3, 3 is detected by the hulling rate sensor 26.
The dehulling rate is detected and compared with the control standard dehulling rate, and the roll gap adjusting means 35 adjusts the dehulling rolls 3, 3 so that the dehulling rate of the scraped rice becomes the control standard dehulling rate. The hulling and sorting work is carried out while the gap is automatically adjusted, and it is highly likely that the adjustment member of the hulling and sorting machine was adjusted during this kind of hulling and sorting work to change the type of paddy. In this case, the amount of light from the shedding rate sensor 26 is readjusted to see if it is appropriate, so the detected shedding rate becomes accurate and the shedding roll gap can be properly adjusted. It is something.

[Brief explanation of the drawing]

[Figure 1] Whole cutaway side view

[Figure 2] Whole cutaway rear view

[Figure 3] Overall perspective view

[Figure 4] Perspective view

[Figure 5] Block circuit diagram

[Figure 6] Block circuit diagram

[Figure 7] Graph showing the distribution of transmitted light amount

[Figure 8] Graph showing the distribution of transmitted light amount

[Figure 9] Flowchart

[Figure 10] Flowchart

[Figure 11] Flowchart

[Figure 12] Flowchart

[Explanation of symbols]

1 Escape 1 2 Paddy hopper 3. Depu roll 4 Surirakumai Kazesenro (Wind Senro) 5 Suction fan 6　Dust exhaust pipe 7. Dropped rice catcher 8 Mixed rice frying machine 10 Sorting case 11 Rotating sorting tube (mixed rice sorting section) 11a pothole 12 Drive roller 13 Supply helix 14 Supply gutter 15 Finishing rice spiral 16 Finishing rice gutter (grain receiving gutter) 16b Finished rice control valve 17 Finishing rice flow down tube 18 Finished rice grain board 19 Finished rice catcher 20 Finished rice grain lifting machine 21 Paddy receiving trough 22 Paddy lifting machine 23 Paddy return hopper 24 Horizontal axis 25　Inclination adjustment means 26 Shedding rate sensor 27 Light emitting element 28 Photo receiving element 29 Light amount adjustment device 30 Arithmetic control section 31 Output circuit 32 Input circuit 33 Grain signal detection circuit 34 Transmitted light amount distribution 35 Roll gap adjustment means 36 Roll gap adjustment motor 37 Operation switch 38 Stop switch 39 Buzzer stop switch 40 Cylindrical rotation down switch 41 Cylindrical rotation up switch 42 Automatic/manual selector switch 43　Uruchi/Mochi selection switch 44 Paddy supply control valve 45 Supply amount switch 46 Skipping rate setting switch 47 Model selection switch 48 Glen sensor 49 Roll development sensor 50 Matrix switch 51 Rotation speed sensor 52 CT 53 Original power supply voltage sensor 54 Shutter opening sensor 55 Layer thickness sensor 56 Finishing lever sensor 57 Supply side grain scattering sensor 58 Intermediate grain scattering sensor 59 Main motor 60　Magnetic contactor 61 Shutter opening adjustment motor 63 Cylindrical rotation speed adjustment motor 64 Buzzer 65 LCD display device

Claims (1)

[Claims] [Claim 1] A pair of dehulling rolls 3 for hulling work,
3, a wind sorting part 4 that wind-sorts the rice that has been scraped from the hulling part 1, and a mixed rice sorting part 11 that sorts the mixed rice after the wind selection into paddy and brown rice. It is a sorting machine, and the removing part 1
An optical shedding rate sensor 26 detects the dropped rice of the peeling process, and the gap between the scraping rolls 3 and 3 can be adjusted in relation to each other. A method for adjusting the light amount of a hull removal rate sensor for a huller sorting machine, characterized in that the light amount of the removal rate sensor 26 is adjusted in relation to adjustment of any one or a predetermined number or more of the adjustment portions of the portion 11. Device.