JPH07213929A - Method for detecting rate of unhulled rice threshing process and rate controlling apparatus - Google Patents

Abstract

PURPOSE:To perform easily a proper detection of the rate of a product and to perform easily to improve working efficiency based on the detection of the rate of the product with high accuracy and to keep the rate of the product to be aimed. CONSTITUTION:In a method for detecting the rate of the unhulled rice threshing process wherein the rate of the product is detected by the ratio of the amt. of arranged unpolished rice from a grain shape selecting machine to the flow rate of unhulled rice fed in unhulled rice threshing rolls 14 and 15, the change of increase and decrease in the amt. of mixed rice in a selecting tank 27 feeding the mixed rice to a mixed rice selecting machine 2 is detected by means of a sensor 30 for the amt. of selection and when the amt. of the mixed rice detected by the sensor 30 for the amt. of selection is incresed or decreased, the detection of the rate of the product is stopped or corrected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rate detecting method and a rate control device in a grain hulling process in which unhulled rice is removed and then separated into unpolished rice and unhulled rice, and the unbrowned rice is separated into smoothed unpolished rice and scrap unpolished rice.

[0002]

2. Description of the Related Art Conventionally, Japanese Utility Model Publication No. 62-13585,
Japanese Utility Model Publication 60-46179, Japanese Utility Model Publication 60-4993.
As shown in Japanese Patent No. 6, a hulling machine that removes paddy with a dapping roll to separate it into brown rice and rice husks, and brown rice mixed with paddy from the hulling machine, that is, mixed rice, is tilted at the upper end side of the upper surface of the swinging selection plate. Inside and from one side of a plurality of cylindrical sorting nets with different mesh sizes, and an oscillating sorting machine that separates and removes brown rice and mixed rice (brown rice + paddy) and paddy from the lower end side of the slant In addition to providing a grain type sorting machine to put brown rice from a swinging sorting machine into the sorting net and scraped brown rice that leaks the mesh from the other side of the sorting net, the hulling machine, the swinging sorting machine, By connecting the grain shape sorter with multiple grain elevators and putting the paddy,
There is a technology to continuously and automatically perform the operations of taking out the mixed rice of brown rice and paddy by removing it, separating and taking out the brown rice, mixed rice and paddy by a rocking sorting plate, and separating and taking out the regular brown rice and scrap brown rice by a sorting net. there were.

[0003]

SUMMARY OF THE INVENTION In the above-mentioned prior art, a sensor for detecting the grain shape (size) of brown rice is provided in the route through which brown rice from an oscillating sorter is sent to the grain shape sorter. Since it was only necessary to select a screening mesh with a mesh size corresponding to the grain shape and separate the brown rice into regular brown rice and scrap brown rice, the plain brown rice was mixed into the scrap brown rice (immature grains, etc.) leaking from the screening net. Although it was easy to prevent this, the ratio of the flow rate of the unpolished rice from the grain shaper to the flow rate of the paddy into the huller (product ratio) is unknown, and therefore, based on the amount of paddy into the huller, There is a problem that the amount of prepared brown rice actually obtained from the grain shape sorter is smaller than the amount of prepared brown rice predicted by the operator. Therefore, by detecting the flow rate of the unhulled rice removed by the huller and the flow rate of the unpolished rice extracted from the grain shape selector, the product ratio, which is the ratio of the unpolished rice flow rate to the unhulled flow, can be obtained. Since the structure is such that the mixed rice taken out from the rocking sorter is returned to the sorting tank which puts the mixed rice (brown rice + paddy) into the rocking sorter, and is re-sorted, it is taken out from the rocking sorter. When the amount of mixed rice changes and the amount of mixed rice in the sorting tank increases or decreases, the product rate obtained from the paddy flow rate and the regular brown rice flow rate becomes extremely inaccurate as described above. For example, when the amount of mixed rice in the sorting tank increases, the product rate decreases due to a large paddy flow rate, while when the mixed rice amount in the sorting tank decreases, the product rate increases due to a small paddy flow rate. is there. Therefore, even if the regular brown rice flow rate / hull flow rate = product ratio is detected, the amount of unhulled rice supplied to the removing roll of the huller or the removal rate of scrap brown rice by the sorting net of the grain shape sorter (selection of mesh, mesh Inclination angle control, net rotation speed control, etc.) cannot be properly performed based on the product ratio,
There is a problem that it is not possible to easily improve the work efficiency of the hulling process (stripping or grain shape selection) and maintain a desired product ratio as a target.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a grain huller provided with a dep roll for throwing in and removing grain of rice, and brown rice mixed with brown rice and paddy from the grain huller are introduced as brown rice. Equipped with a mixed rice sorter that separates and removes paddy, and a grain shape sorter that separates and removes unpolished rice from the mixed rice sorter into regular brown rice and scrap brown rice. In the rate detection method of the hulling process, which detects the product ratio by the ratio of the flow rate of unpolished rice from the rice, the increase / decrease in the amount of mixed rice in the sorting tank that inputs the mixed rice into the mixed rice sorter is detected by the sorting amount sensor, and the sorting amount When the amount of mixed rice detected by the sensor is increasing or decreasing, the product rate detection is interrupted or corrected.

[0005] Further, a huller provided with a removing roll for throwing in and removing rice and a mixed rice sorter for feeding the mixed rice of brown rice and paddy from the huller to separate and remove brown rice and paddy And, in the rate control device of the hulling process, which includes a grain shape sorter for separating the brown rice from the mixed rice sorter into smoothed brown rice and scrap brown rice,
A paddy sensor that detects the flow rate of paddy that is put into the de-pulling roll, and a sensor that adjusts the paddy rice from the grain shaper
The present invention is characterized by providing a sorting amount sensor for detecting the amount of mixed rice in a sorting tank for introducing mixed rice into a mixed rice sorter, and a correction unit for correcting the product rate based on the detection results of the paddy sensor and the unpolished rice sensor. .

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is an explanatory view of a hulling process, in which (1) is a hulling machine that removes the hull and separates it into brown rice and hulls,
(2) swings the sorting plate tilted to the front, rear, left, and right to the left and right to select the slid rice after hulling (mixed rice containing brown rice and paddy), and select brown rice and mixed rice (brown rice + paddy) and paddy. The oscillating selection type mixed rice sorter, which is separated and taken out in (3), is the graded brown rice after the oscillating selection, which has a size larger than a predetermined size and a scrap brown rice having a size smaller than a predetermined size (immature rice, broken rice) Grain shape sorter to separate and take out, (4)
Is a product tank for storing the regular brown rice (product) after the grain shape selection.

The paddy huller (1) is provided with a paddy hopper (5), which puts the paddy dried to a predetermined water content into the hopper (5) and opens and closes it by controlling the paddy amount motor (6). A free supply valve (7) and a feeding reed roll (8) are attached to the lower outlet of the hopper (5), the opening of the supply valve (7) is adjusted by the motor (6), and the reed roll (8) is adjusted. ) Is rotationally driven to drop a predetermined amount of paddy below the hopper (5), and the supply valve (7)
And a contact plate (9) below the lead roll (8),
Correspondingly, the plate (9) is rotatably provided on the support shaft (10), the weight (11) for rotating the contact plate (9) upward is provided, and the potentiometer type paddy sensor (on the support shaft (10) is provided. 12) is attached, and the paddy is dropped on the upper surface of the pad (9) through the supply valve (7) and the guide (13), and the pad (9) is rotated downward in proportion to the flow rate of the pad, and the pad is attached. The paddy sensor (12) interlocked with the vertical rotation of (9) is used to detect the paddy flow rate.

Further, a pair of removing rolls (14) and (15) rotated by a hulling motor (not shown) are rotatably supported below the contact plate (9), and one removing roll (14). ) Is supported at a fixed position, and the air cylinder (1
The piston of 6) is expanded and contracted, and the other removing roll (15)
Is attached to and removed from the removing roll (14) at a fixed position,
By adjusting the removal pressure (hulling gap) of the pair of removal rolls (14) (15), the paddy is dropped between the removal rolls (14) (15) through the pad plate (9). , Each removal roll (1
4) Dehull the paddy by (15) to separate it into brown rice and chaff. Although the air cylinder (16) has a structure in which the depressurization pressure of the demolding rolls (14) and (15) is adjusted to obtain a predetermined removal rate, an electric motor is provided instead of the air cylinder (16). The hull gap of the removing rolls (14) and (15) may be adjusted by the electric motor. Also,
Although the paddy sensor (12) is formed by a potentiometer which is interlocked with the vertical movement of the pad plate (9), the paddy sensor (12) is formed by an ultrasonic wave oscillating and receiving member, a light emitting and receiving member, or a piezoelectric capacitor. You may.

Further, a wind-selecting passage (17) is provided below the removing rolls (14) (15) to remove the removing rolls (14) (1).
The mixed rice of brown rice and paddy, which is the scrapped rice of 5), and the rice husk are dropped on the upper end of the air-selection passage (17), and the rice husk is sucked from the middle of the air-selection passage (17) by the Karafu fan (18) to be taken out of the machine. A sample chute that discharges and drops mixed rice, which is scraped-off rice, from the lower end of the air-selecting passageway (17) to the grain chute (19), arranging brown rice and paddy one by one in a row (series) and sliding off. (20), the upper end of the slope of the sample chute (20) faces below the lower end of the air selection passageway (17), and a part of the mixed rice dropped on the grain chute (19) is used as a sample for the sample chute (20). ), And a photoconductive type removal rate sensor (22) is provided above the inclined lower end of the sample chute (20) facing the return chute (21).
Lower end of the slope (either immediately before or immediately after the jump)
The sensor (22) irradiates the brown rice and the paddy with light, and the reflected light of the brown rice and the paddy is detected by the sensor (22), and the brown rice and the paddy are detected by one or both of the reflected light level difference and the detection time difference. Judgment is made, and the removal rate is calculated based on the ratio of brown rice and paddy in a predetermined grain number, and the air cylinder (16) is operated so that the removal rate based on the detection result of the sensor (22) becomes the predetermined removal rate. By controlling the removing pressure of the removing rolls (14) and (15), the removing rate is automatically controlled so that the initially set removing rate is achieved, and the paddy hopper (5) is continuously fed. It is configured so as to obtain a mixed rice of brown rice and paddy (approximately constant removal rate) by removing and wind-selecting.

Further, a mixed rice elevator (23) for carrying the mixed rice (scraped rice) from the huller (1) into the mixed rice sorter (2) is provided, and the entrance at the lower end side of the elevator (23) The outlets of the grain chute (19) and the sample chute (20) are connected to the (24), and the chute (19) (2) is connected.
The mixed rice from 0) is introduced into the introduction port (24), and a predetermined amount is provided between the outlet (25) on the upper end side of the elevator (23) and the distribution hopper (26) of the sorter (2). A mixed rice tank (27) that discharges a fixed amount of mixed rice is provided.
Sorter (2) for mixed rice picked up by elevator (23)
To the tank via the tank (27).

Further, the tank (27) is provided with a micro switch type low level sensor (28) for detecting that the amount of mixed rice in the tank (27) has decreased below the amount required for the sorter (2). When the amount of mixed rice in the tank (27) becomes too small, the sorting operation of the sorter (2) is stopped based on the detection result of the sensor (28), and the amount of mixed rice of a predetermined amount or more is The tank (27) is provided with a micro-switch type high level sensor (29) for detecting that the tank (27) is retained.
When the amount of mixed rice inside becomes excessive, the sensor (2
The hulling and removing operation of the hulling machine (1) is stopped based on the detection result of 9).

Further, a sorting amount sensor (30) for measuring the total weight of the tank (27) to detect the amount of mixed rice in the tank (27) is provided to increase or decrease the amount of mixed rice in the tank (27). A sensor that continuously detects the weight of the tank (27) by a piezoelectric capacitor (electronic weighing scale) that electrically detects the weight of the tank (27), or reflects ultrasonic waves on the upper surface of the mixed rice layer inside the tank (27). A level sensor for detecting the amount of mixed rice in the tank (27), or a spring (coil spring, leaf spring, etc.) for mechanically detecting the weight of the tank (27), and a variable resistor for converting the displacement of the spring into an electric signal. The sorting amount sensor (30) by a level sensor including a rocking arm and a spring and a potentiometer for detecting the surface height position of the mixed rice in the container or the tank (27) To configure.

Further, a plurality of rectangular flat plate-like selection plates (31) having a large number of recessed holes are installed in multiple stages and tilted in the front-back and left-right directions, and the respective selection plates (31) are swung in the left-right direction. Then, the mixed rice is made to flow down from the upper end side of the sorting plate (31) in the front-rear direction, and the brown rice is biased to the upper end side of the sorting plate (31) in the left-right direction by a specific gravity selection action, and the paddy is placed on the lower end side of the left-right direction. Biased rice (not including paddy), mixed rice (brown rice + paddy), and paddy (not including brown rice) through two partition plates that divide the sorting plate (31) into three parts on the lower end side in the front-rear direction. The brown rice from the brown rice gutter (32) to the mixed rice gutter (3
The mixed rice of brown rice and paddy is taken out from 3) and the paddy is taken out from the paddy trough (34), respectively. The paddy from the paddy trough (34) is a huller (1).
The mixed rice from the mixed rice gutter (33) is automatically returned to the paddy hopper (5) and removed again, and the elevator (2) is used.
The inlet (24) of 3) is automatically returned by using a belt conveyer (not shown) or the like for re-sorting. It should be noted that instead of the sorting plate (31) for separating brown rice and paddy by rocking, a cylindrical sorting tube having a large number of recessed holes (pot holes) on the inner peripheral surface is continuous in one direction on substantially the same axis. A mixed rice sorting structure may be adopted in which the brown rice and the paddy are separated by rotating them and the height of the paddy rice and the paddy is lifted by the recessed hole.

Further, as shown in FIGS. 1 to 3, there is provided a brown rice elevator (35) for carrying the brown rice from the brown rice gutter (32) of the mixed rice sorter (2) into the grain shape sorter (3), Brown rice from the brown rice gutter (32) is introduced into the inlet (36) of the elevator (35), and a plurality of cylindrical sorting nets (38) having different meshes (37) are provided for the grain shape sorter ( 3), the first, second, third, fourth and fifth solenoids (3
9) Shutters (44) (45) (46) (47) that are opened and closed respectively by (40) (41) (42) (43)
The input chutes (49) of the respective sorting nets (38) are connected to the outlet (50) of the elevator (35) via (48).

Further, the sorting net (38) is tilted in the axial direction, and the sorting net (38) is rotatably mounted via bearings (51) (51) such as bearings, and an electric type grain sorting motor ( 52) rotates the sorting net (38) in one direction, and simultaneously controls the solenoids (39) to (43) to selectively open the shutters (44) to (48) to move the elevator (35). Brown rice from the outlet (50) is thrown into the inside of the upper end of one side of the sorting net (38) through the throw chute (49) to let brown rice of a predetermined size or less, that is, scrap brown rice, leak from the net (37). , The waste brown rice is taken out of the machine through the lower waste chute (53), and the brown rice having a predetermined shape, that is, the regular brown rice, which is a product, is taken out to the product chute (54) from the inclined lower end opening of the sorting net (38). .

Further, by changing the rotation speed of the sorting net (38) by controlling the grain sorting motor (52), the leakage amount (leakage) of the scrap brown rice in the sorting net (38) of the mesh (37) of the same shape. The lowering rate can be changed. For example, when the rotation of the sorting net (38) is made high speed, the action such as stirring inside the sorting net (38) is sufficiently performed, and the amount of waste brown rice that leaks is large. On the other hand, by rotating at a low speed, the amount of waste brown rice decreases and the sorting net (38)
An electric tilt angle motor (55) for changing the tilt angle in the axial direction of the shaft is provided, and the tilt angle of the sorting net (38) is changed by forward / reverse control of the tilt angle motor (55).
It is possible to change the leakage amount (leakage rate) of waste brown rice in the sorting net (38) of the mesh (37) of the same shape. For example, by reducing the inclination angle of the sorting net (38), the leakage of waste brown rice can be reduced. While the lower amount (leakage rate) increases, the sorting net (38)
By increasing the inclination angle of, the leakage amount (leakage rate) of waste brown rice is reduced. The grain selection motor (52)
May be provided for each of the sorting nets (38) ..., and each sorting net (38) may be rotated by a single grain sorting motor (52), and the tilt angle motor (55) may be provided. Each sorting net 38 may be attached to each of the sorting nets 38 to change the inclination angle of each sorting net 38 independently, or each sorting net 38 may be driven by a single inclination angle motor 55. The inclination angle of may be changed at the same time.

Further, the whole amount of the unpolished rice flowing down from the product chute (54) of the grain shape sorter (3) is introduced into the flow rate detection chute (56) and applied to the inside of the lower side of the flow rate detection chute (56). A plate (57) is provided, the plate (57) is rotatably provided on the support shaft (58), and a weight (59) for rotating the contact plate (57) upward is provided, and on the support shaft (58). Attach a potentiometer-type brown rice sensor (60) to the product chute (54)
The whole amount of the straightened rice flowing down from the drop is dropped on the upper surface of the backing plate (57), the backing plate (57) is rotated downward in proportion to the flow rate of the backed rice, and the browned rice sensor is interlocked with the vertical rotation of the backing plate (57). (60) is configured to detect the flow rate of plain brown rice.

Furthermore, a product elevator (61) for carrying the adjusted brown rice after the flow rate detection by the adjusted rice sensor (60) into the product tank (4) is provided, and the adjusted brown rice is retained in the tank (4). A level sensor (62) for reflecting ultrasonic waves on the upper surface of the straight rice layer inside the tank (4) to detect the amount of straight rice inside the tank (4) is attached, and a weighing machine is provided at the lower outlet side of the tank (4). (63) is provided, and the weight of the straightened rice to be taken out of the tank (4) and shipped is measured by the weighing machine (63), and a predetermined amount of the straightened rice is configured to be shipped after being packed in a container or packed into bags. There is.

Further, FIG. 4 is a control circuit diagram of a hulling process for detecting the product ratio and automatically adjusting the product ratio.
Controller formed by microcomputer (64)
The paddy sensor (12) and the sorting amount sensor (3
0), straight brown rice sensor (60), and sorting amount sensor (3
The variable resistor type selection amount setting device (65) for initially setting the detection reference value of 0) is connected to the controller (64) respectively, and the sensors (12) (30) (6) are connected.
0) The product commission indicator (66) which displays the product commission calculated by the controller (64) based on the detection result of 0) by one or both of a number and a graph, and the 1st-5th solenoids (39)-(43). And a hulling amount motor (6)
, Grain selection motor (52) and tilt angle motor (55)
The controller (64) is connected to the respective outputs.

Then, the product commission control is performed as shown in the flow charts of FIGS. As shown in the flow chart of FIG. 5, the sorting tank (2
7) Input the mixed rice standard value, and select quantity sensor (3
0) Input the sorting tank (27) mixed rice amount detection value,
When the amount of mixed rice in the sorting tank (27) is substantially constant, the paddy flow rate detection value of the paddy sensor (12) is input, and the adjusted brown rice flow rate detection value of the adjusted brown rice sensor (60) is input to adjust the adjusted brown rice flow rate /
Calculated paddy flow rate = product ratio, and calculated "product ratio"
Is displayed on the display unit (66), and it is judged whether or not the obtained "product commission" is proper. When the "product commission" is proper, the current work is continued while the "product commission" is continued. If it is not appropriate, the first to fifth solenoids (39) to (43) are automatically controlled so that the "product ratio" is appropriate, and the sorting mesh (38) for sorting the grain shape is used as a mesh. Switch to another sorting net (38) of different size (37), change the size of the mesh (37) for removing the waste brown rice,
The leakage amount (rate) of waste brown rice is changed to correct the “product ratio” to the target ratio. In this way, a hulling machine (1) provided with dep rolls (14) (15) for throwing in and removing rice
And a mixed rice sorter (2) that inputs the mixed rice of brown rice and paddy from the huller (1) to separate and remove the brown rice and the paddy, and prepares brown rice from the mixed rice sorter (2) In a rate control device for a hulling process, which comprises a grain shape sorter (3) for separating and taking out unpolished brown rice, a grain sensor (12) for detecting a grain flow rate to be fed to a depulling roll (14) (15), and grain. Shape sorter (3)
An unpolished rice sensor (60) for detecting the amount of unpolished rice from
Sorting tank (2) that puts mixed rice into the mixed rice sorter (2)
7) The sorting amount sensor (30) for detecting the mixed rice amount, and the first to fifth solenoids (correcting means for correcting the product rate based on the detection results of the paddy sensor (12) and the unpolished rice sensor (60) ( 39) to (43) are provided, and the rate control for always maintaining a substantially constant "commodity rate" is automatically performed. The target commission is the controller (6
Although it may be stored in advance in 4) and the work may be performed, a variable resistor type commission setting device which can be manually set at the time of the work may be provided, and the target commission may be arbitrarily set by manual operation of the setting device, The product rate desired by the operator can be easily obtained.

Further, in the flow chart of FIG. 5, when the sorting amount sensor (30) is input, it is detected that the sorting tank (27) amount is not substantially constant and the amount of mixed rice inside the sorting tank (27) increases or decreases. When it is determined that the rice has been treated, the paddy sensor (12) and the unpolished rice sensor (6)
The dep roll (14) (15) which suspends the product rate detection based on the detection result of 0), and puts in and removes paddy
A rice hulling machine (1), a mixed rice sorting machine (2) that inputs the mixed rice of brown rice and paddy from the hulling machine (1) and separates and removes the brown rice and the rice, and a mixed rice sorting machine ( It is equipped with a grain shape sorter (3) that separates and removes the brown rice from 2) into smooth grain rice and scrap brown rice, and the grain shape sorter (3) from the grain shape sorter (3) is fed to the depulling rolls (14) (15). A sorting tank (27) for feeding mixed rice to a mixed rice sorting machine (2) in a rate detecting method in a hulling process for detecting a product rate based on a ratio of a leveled brown rice flow rate.
The increase / decrease change in the mixed rice amount is detected by the selection amount sensor (30), and when the amount of mixed rice detected by the selection amount sensor (30) is increasing or decreasing, the product rate detection is interrupted and the above-mentioned paddy is detected. The erroneous detection of the "product ratio" detection based on the sensor (12) and the unpolished rice sensor (60) is prevented. For example, the amount of mixed rice in the sorting tank (27) increases when the paddy flow rate of the paddy sensor (12) increases or when the amount of mixed rice returned from the mixed rice gutter (33) increases. Therefore, compared to when the calculated product ratio is proper, the paddy flow rate is unduly increased, and the calculated "product ratio" is less than the actual product ratio.
On the other hand, the amount of mixed rice in the sorting tank (27) decreases when the paddy flow rate of the paddy sensor (12) decreases or when the amount of mixed rice returned from the mixed rice gutter (33) decreases. Therefore, the rate of unhulled rice is unreasonably small compared to when the calculated product ratio is appropriate, and the calculated "product ratio"
Has a problem that it is more than the actual product commission. Therefore, the detection of the "commodity commission" is interrupted by the increase / decrease in the amount of the tank (27), so that the above-mentioned inconvenience caused by the increase / decrease is eliminated.

Further, in the flow chart of FIG. 6, when the selection amount sensor (30) is input, it is detected that the amount of the sorting tank (27) is not substantially constant and the amount of mixed rice in the sorting tank (27) increases or decreases. When it is determined that the rice has been treated, the paddy sensor (12) and the unpolished rice sensor (6)
The product commission detection based on the detection result of 0) is corrected. For example, when the amount of mixed rice in the sorting tank (27) is increased, the rate of the unpolished rice is larger than the calculated “product ratio” due to an increase in the flow rate of paddy, so that the mixed rice in the sorting tank (27) is increased. The product ratio calculated in proportion to the amount is corrected to the positive side (the side where the value is larger), and the product ratio after correction is larger than the calculated "product ratio" (approximate to the actual product ratio). Is displayed in the same manner as above, and the rate control for correcting the target rate based on the corrected product rate is automatically performed. On the other hand, when the amount of mixed rice in the sorting tank (27) decreases, the rate of paddy flow decreases and the actual proportion of the prepared brown rice becomes smaller than the calculated “product ratio”. The "product commission" calculated in proportion to the amount of increase is corrected to the negative side (the side where the value becomes smaller), and the product ratio after the correction of the value smaller than the calculated "product commission" (actual product ratio Approximate)
Is displayed in the same manner as above, and commission control is automatically performed to correct the target commission based on the corrected product commission.

Further, in the flowchart of FIG. 7, when the sorting amount sensor (30) is input, it is detected that the sorting tank (27) amount is not substantially constant and the amount of mixed rice in the sorting tank (27) increases or decreases. When it is determined that the paddy sensor (1) is operated, the paddy amount motor (6) is controlled.
2) Adjust the flow rate of paddy detected by
Correct the mixed rice amount in 7). Sorting tank (27)
When the amount of mixed rice increases, the paddy flow rate increases and the actual proportion of prepared brown rice becomes larger than the calculated “product proportion”. Therefore, the proportion of the mixed rice in the sorting tank (27) increases in proportion to the above. When the supply valve (7) is closed by the motor (6) to reduce the paddy flow rate detected by the paddy sensor (12) and the amount of mixed rice in the sorting tank (27) is reduced,
Since the actual proportion of unpolished rice is smaller than the calculated “product proportion” when the paddy flow rate is low, the sorting tank (2
The feed valve (7) is opened by the motor (6) in proportion to the decrease amount of mixed rice in (7) to increase the paddy flow rate detected by the paddy sensor (12). The amount of the sorting tank (27) is corrected by the automatic flow rate adjustment, the "product ratio" is calculated as described above, and the calculated "product ratio" is close to the actual product ratio. Also,
When the paddy flow rate of the supply valve (7) is automatically adjusted as described above, the "product ratio" is calculated based on the detection results of the sensors (12) and (60) regardless of the amount of the sorting tank (27). However, it is possible to display the "product commission" and automatically control the commission.

Further, as shown in the flow chart of FIG. 8, instead of the first to fifth solenoids (39) to (43), the product commission is calculated based on the detection results of the paddy sensor (12) and the brown rice sensor (60). A tilt angle motor (55) is provided as a correction means for correcting, and when the calculated "product ratio" is not proper, the tilt angle motor (55) is adjusted so that the "product ratio" becomes appropriate by the difference from the target ratio. Can be automatically controlled to change the brown rice flow angle of the screening net (38) to change the leakage amount (rate) of waste brown rice, and correct the "product ratio" to the target ratio.

Further, as shown in the flow chart of FIG. 9, instead of the first to fifth solenoids (39) to (43), the product rate is calculated based on the detection results of the paddy sensor (12) and the brown rice sensor (60). A grain selection motor (52) is provided as a correction means for correcting, and when the calculated "product ratio" is not proper, the grain selection motor (52) is adjusted so that the "product ratio" becomes appropriate by the difference from the target ratio. It is possible to correct the "product ratio" to the target ratio by automatically controlling the rotation speed of the product, changing the rotation speed of the screening net (38), and changing the leakage amount (rate) of the waste brown rice.

It should be noted that the solenoids (39) to (43) and the motors (52) (55) in FIGS. 5, 8 and 9 may be automatically controlled by any one of them. Alternatively, the respective automatic controls may be combined by setting priorities according to the control width and the like, and any one of the correction of the “product ratio” detection and the hulling amount motor (6) control in FIG. 6 and FIG. May be performed, or both may be performed in combination.

[0027]

EFFECTS OF THE INVENTION As is clear from the above examples, according to the present invention, the depulling rolls (14) and (15) in which paddy is thrown in and depulled.
A rice hulling machine (1), a mixed rice sorting machine (2) that inputs the mixed rice of brown rice and paddy from the hulling machine (1) and separates and removes the brown rice and the rice, and a mixed rice sorting machine ( It is equipped with a grain shape sorter (3) that separates and removes the brown rice from 2) into smooth grain rice and scrap brown rice, and the grain shape sorter (3) from the grain shape sorter (3) is fed to the depulling rolls (14) (15). A sorting tank (27) for feeding mixed rice to a mixed rice sorting machine (2) in a rate detecting method in a hulling process for detecting a product rate based on a ratio of a leveled brown rice flow rate.
The increase / decrease change in the mixed rice amount is detected by the selection amount sensor (30), and when the mixed rice amount detected by the selection amount sensor (30) is increasing or decreasing, the product rate detection is interrupted or corrected. The proper product ratio can be easily detected, and the work efficiency can be improved and the target product ratio can be easily maintained based on the highly accurate product ratio detection. Further, by suspending the product rate detection when the amount of mixed rice in the sorting tank (27) increases or decreases, only the accurate product rate detection can be performed, and the product rate detection accuracy can be easily improved. . Further, when the amount of mixed rice in the sorting tank (27) increases or decreases, by correcting the product rate detection according to the increase or decrease of the mixed rice, the product rate detection can be continuously performed.
The control of work efficiency such as the grain huller (1) or the grain shape sorter (3) and the control of the product rate can be continuously performed based on the detected product rate, and the control accuracy can be easily achieved. It is possible to easily improve the processing ability in the hulling process, reduce the loss of the unpolished rice, and prevent the quality of the unpolished rice from deteriorating.

[0028] In addition, a hulling machine (1) provided with dep rolls (14) (15) for throwing in and removing rice and a mixed rice of brown rice and paddy from the hulling machine (1) are put in. In the hulling process, a mixed rice sorter (2) that separates and removes unpolished rice and paddy, and a grain shape sorter (3) that separates and extracts unpolished rice from the mixed rice sorter (2) into smoothed brown rice and scrap brown rice In the rate control device, a paddy sensor (12) that detects the flow rate of paddy that is put into the depulling rolls (14) and (15), and a smoothed grain rice sensor (60) that detects the flow rate of graded brown rice from the grain shape selector (3). And the detection results of the sorting amount sensor (30) for detecting the amount of mixed rice in the sorting tank (27) which inputs the mixed rice into the mixed rice sorter (2), and the paddy sensor (12) and the straight brown rice sensor (60). Correcting means (39) to (43) or (52) or (55) for correcting the product commission based on Was intended, the proper product ratio detection can be easily performed, based on the product ratio detection precision, in which the like improve and objects product percentage maintenance work efficiency can be easily performed.

Further, a hull amount motor (6) for adjusting the flow rate of the paddy supplied to the depulling rolls (14), (15), or an inclination angle for adjusting the angle of the sorting net (38) of the grain shape sorting machine (3). The correction means is constituted by a motor (55) or a controller (64) for adjusting the rotation speed of the grain selection motor (52) for rotating the selection net (38), and the paddy of the depuffing rolls (14), (15). Flow rate adjustment or sorting network (3
8) The product ratio can be corrected by adjusting either the inclination angle, the sorting net (38), the rotational speed, or a combination thereof, and the product ratio can be obtained without degrading the quality of the regular brown rice. The work efficiency of the hulling process (stripping or grain shape selection) can be improved by maintaining the above specified value, and the manual adjustment of the product rate can be reduced to easily automate the work and save labor. Is something that can be done.

[Brief description of drawings]

FIG. 1 is an explanatory view of a hulling process.

FIG. 2 is an overall explanatory view of a grain shape sorter.

FIG. 3 is an explanatory diagram of the same portion.

FIG. 4 is a control circuit diagram of a hulling process.

FIG. 5 is a flowchart of product commission control.

FIG. 6 is the same flowchart.

FIG. 7 is the same flowchart.

FIG. 8 is the same flowchart.

FIG. 9 is the same flowchart.

[Explanation of symbols]

 (1) Hulling machine (2) Mixed rice sorter (3) Grain shape sorter (12) Paddy sensor (14) (15) Depulling roll (27) Sorting tank (30) Sorting amount sensor (39) ~ ( 43) Solenoid (correction means) (52) Grain selection motor (correction means) (55) Tilt angle motor (correction means) (60) Adjusted brown rice sensor

Claims (2)

[Claims] 1. A rice huller provided with a dep roll for throwing in and removing rice, and a mixed rice sorter for feeding the mixed rice of brown rice and paddy from the hulling machine to separate and remove brown rice and paddy. And a grain shape sorter that separates and removes unpolished rice from the mixed rice sorter into regular brown rice and scrap brown rice, and the product ratio is based on the ratio of the amount of regular brown rice from the grain sorter to the flow rate of the paddy put in the dep roll. In the rate detection method of the hulling process to detect, the increase or decrease of the mixed rice amount detected by the selection amount sensor is detected by the increase or decrease change of the mixed rice amount of the selection tank that inputs the mixed rice into the mixed rice selector A method for detecting a commission in a hulling process, characterized in that detection of a product commission is interrupted or corrected when the product is decreasing. 2. A rice huller provided with a dep roll for throwing in and removing rice, and a mixed rice sorter for feeding brown rice and paddy mixed rice from the hulling machine to separate brown rice and paddy and take them out. And, in the rate control device of the grain hulling process equipped with a grain shape sorter that separates and removes brown rice from the mixed rice sorter into smoothed brown rice and scrap brown rice, a paddy sensor that detects the flow rate of the paddy to be put into the removing roll, and a grain Shaped unpolished rice sensor that detects the flow rate of unpolished rice from a shape-type sorting machine, sorting amount sensor that detects the amount of mixed rice in a sorting tank that feeds mixed rice into the mixed rice sorting machine, and the detection results of the paddy sensor and the unpolished rice sensor A rate control device for a hulling process, characterized in that correction means for correcting the product rate based on the product rate is provided.