JPH0118192Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a derolling rate control device for a rice huller equipped with a pair of derollers. Previously, Special Public Service No. 47-24384
As shown in the above publication, there is a technique in which a mixed rice sensor is provided to detect the mixed rice that has been removed from rolls, and the sensor is used to detect the mixing ratio of brown rice and paddy to control the removal rate.

However, although the prior art is provided with a setting circuit for manually setting the detection reference value of the mixed rice sensor, there are differences in the amount of light reflected from the paddy that occurs depending on the variety and properties, as well as Feeling the difference in the amount of light reflected from brown rice due to its properties, etc.
It is necessary for the operator to intuitively set the amount of light reflected from the mixed rice as a reference, and it is not possible to easily improve handling operability such as setting or changing the detection reference value of the mixed rice sensor. There were functional problems, such as the fact that improvements could not be easily made.

However, the present invention consists of a paddy sensor that detects the unhulled paddy to be supplied to the deroller, a mixed rice sensor that detects the mixed rice of brown rice and paddy after the grain is removed from the deroller, and a sorting machine. and a brown rice sensor that detects the brown rice sorted and separated by and controls the sorting, and each of the sensors is interlocked and connected to a derolling rate control mechanism, so that the rate of omission is controlled by each of the sensors. It is characterized by having the following configuration.

Therefore, the detection light amount output of the paddy sensor that detects the paddy supplied to the derolling and the detection light amount output of the brown rice sensor that detects the brown rice after sorting and separation are used to determine the output of the mixed rice sensor that detects the mixed rice from the derolling. The detected light amount can be corrected, and even if the reflected light amount of paddy and brown rice changes depending on the variety and properties (moisture content, surface color, etc.), the detected light amount standard value of the mixed rice sensor can always be obtained at an appropriate value. Since the output of the brown rice sensor that performs sorting control is used, it is possible to easily simplify the removal rate detection structure, and the removal rate detection structure is simpler than conventional ones, improving the removal rate control function and handling operability. can be easily achieved.

Embodiments of the present invention will be described in detail below based on the drawings.

Fig. 1 is an overall side view, and Fig. 2 is a plan view of the same.
Reference numeral 4 denotes the hulling part of the huller 1; 4, 5, and 6, a pair of unrollers installed in the lower part of the hopper 4; 7, the wind selector on which the hulling part 3 is placed; Part 8 is a mixed rice thrower that takes out the mixed rice of brown rice and paddy that has been removed, and 9 is a dust suction fan that separates and takes out the rice husks and rice grains. After drying, the rice is fed into the hopper 4 through the supply chute 10, and the hulling operation is performed continuously.

Further, in the figure, reference numeral 11 indicates the main machine frame of the above-mentioned swing sorting machine 2, 12 indicates a swing sorting section which is swingably supported on the machine frame 11 and is equipped with multistage sorting plates 13, and 14 indicates the grain after hulling. A mixing rice tank into which the grains are inputted via the mixed rice thrower 8, a supply tank 15 which distributes and supplies the grains from the tank 14 to each sorting plate 13, and a discharge gutter 16 which discharges the grains after sorting. , each sorting plate 1 from the tank 14 via the supply tank 15
The grains supplied to the container 3 are separated into unpolished rice and paddy by the oscillating motion of the sorting section 12 during the flow of the grains, and are taken out to a delivery chute 17 via a discharge gutter 16. .

As shown in FIGS. 3 and 4, the sorting section 12
Each sorting plate 13 is provided in a plurality of stages on a frame 18, and the upper surface of the sorting plate 13 is formed into a resistive rough surface having a plurality of concave depressions. In other words, the sorting plate is formed so that it has a flow angle of inclination β on the left and right sides in FIGS. 1 and 4, and an inclination angle of α on the left and right sides. While the grains distributed and supplied to the upper end of the front and back slope of No. 13 flow down to the lower end of this slope, the brown rice layer A is on the left swinging up side of the sorting plate, and the brown rice layer A is on the right swinging down side of the sorting plate. The structure is such that the paddy layer B and the mixed rice layer C are separated and concentrated in the middle and flow down.

In addition, a brown rice partition plate 19 for separating the brown rice layer A and the mixed rice layer C and a partition plate 20 for separating the mixed rice layer C and the paddy layer B are respectively disposed at the downstream end of the sorting plate 13. The brown rice group separated by the plate 19 is guided to the brown rice gutter 23 of the discharge gutter 16 via each downstream guide plate 21, 22, and the mixed rice group separated by the brown rice partition plate 19 and the paddy partition plate 20 is guided downward. Mixing rice gutter 25 of discharge gutter 16 via plates 22, 24
Then, the paddy group separated by the paddy partition plate 20 is dropped into the paddy gutter 26 of the discharge gutter 16 via the downstream guide plate 24, and the brown rice, mixed rice, and paddy are transferred to the delivery chute 1.
It is constructed so that it can be separated into 7 parts and taken out.

Furthermore, the brown rice partition plate 19 is attached to a screw shaft 2 to a partition plate motor 27 for adjusting the brown rice partition attached to the frame body 18.
8 and an engaging member 29 so that the brown rice partition plate 19 can be moved from side to side by being driven in forward and reverse directions by a motor 27.

A fixed mounting plate 30 is attached to the upper end of the brown rice partition plate 19.
A position control boundary sensor 31, which is a photoelectric sensor for detecting paddy, is installed through the partition plate 30. The grains at the top of the sorting plate 13 flowing down the mixed rice side of No. 19 are irradiated with light and the amount of reflected light is received. It is configured to detect the mixed amount of paddy at the sensor 31 position.

Further, position control brown rice and paddy sensors 36 and 37, which are photoelectric sensors, are installed on the sorting brown rice side and the paddy side of the frame 18 via fixed mounting plates 34 and 35, respectively, and the position control sensors 36 and 37 are installed at the lower positions of the sensors 36 and 37. Sorting board 13
It is configured to irradiate the upper sorted brown rice and paddy with light and receive the amount of reflected light.

FIG. 5 is an automatic control circuit diagram of the hulling machine 1 and the sorting machine 2, and the dehulling control mechanism is a dehulling rate control mechanism that adjusts the dehulling rate by moving the dehulling rolls 5 and 6 of the hulling machine 1 toward and away from each other. motor 38 and the rolls 5, 6
It is equipped with a photoelectric rice sensor 39 for controlling the removal rate, which detects the paddy supplied to the rice cooker, and a photoelectric mixed rice sensor 40 for controlling the removal rate, which detects the amount of paddy contained in the mixed rice falling below the rolls 5, 5. The paddy and mixed rice sensors 39 and 40 are connected to the input side of the operating amplifier 41, respectively, and the unrolled rice sensors 5 and 6 are
a regulator 42 for setting the level of the output of the amplifier 41, which is an evasion rate setting device; and the brown rice partition plate 19.
an operating amplifier 43 to which the brown rice sensor 36 for position control is connected to the input side, a comparator 44 for determining the output of the amplifier 43, and a comparator 44 connected to the comparator 44 to drive the motor 38 in forward and reverse rotation. Closing and opening circuits 45 and 46 are provided, and the light intensity difference between the paddy and mixed rice sensors 39 and 40 for controlling the removal rate via the regulator 42 and the detected value of the brown rice sensor 36 for position control is provided. Based on the difference, the motor 38 is rotated in the forward and reverse directions to automatically connect the removal rolls 5 and 6 to maintain the removal rate substantially constant.

Further, in the figure, 47 is an operating amplifier that connects the brown rice and paddy sensors 36 and 37 for position control of the brown rice partition plate 19 and outputs a reference reflection difference between brown rice and paddy, and 48 is a level setting for the output of the amplifier 76. A level adjuster 49 connects the boundary sensor 31 and the level adjuster 48 and outputs a signal when there is a difference in light amount between the set light amount of the adjuster 48 and the detected light amount of the boundary sensor 31. Amplifier, 5
0 is a comparator that outputs a forward/reverse signal of the partition plate motor 27 based on the output signal of the operating amplifier 49;
Reference numerals 51 and 52 denote right and left movement circuits that rotate the motor 27 in forward and reverse directions according to the output signal of the comparator 50, and the difference in light amount between the reference light amount set by the regulator 48 and the sensor 31 is When this occurs, the comparator 50 outputs a forward/reverse signal for the motor 27, and the motor 27 is driven forward/reverse to match the reference light amount of the regulator 48 with the detected light amount of the sensor 31. It is configured to control the movement of the plate 19.

The present embodiment is constructed as described above, and the amounts of paddy before and after hulling by the derolling 5 and 6 are detected by the paddy sensor 39 and the mixed rice sensor 40, respectively.
An input signal via the regulator 42 based on the difference in the amount of light detected by the sensors 39 and 40 and the brown rice sensor 3
Based on the judgment with the input signal based on the amount of light detected in step 6, the comparator 44 outputs a signal for driving the motor 38 in the forward and reverse directions, thereby controlling the drive of the motor 38 to keep the rate of removal of the rolls 5 and 6 constant. It is something to be retained.

On the other hand, the mixed rice, brown rice, and paddy on the upper surface of the sorting plate 13 are detected by the boundary sensor 31, the brown rice sensor 36, and the paddy sensor 37.
The drive control of the partition plate motor 27 is performed via the comparator 50 based on the difference in the detected light intensity between 6 and 37, and the position of the brown rice partition plate 47 is controlled. It is designed so that only the parts can be taken out.

Furthermore, since the unpolished rice sensor 36, which serves as a reference for this evaporation rate control, is installed on the complete brown rice take-out side of the oscillating sorter 1, an accurate reference value can be obtained, and the evasion rate control can be performed more accurately and precisely. I can make it good.

In addition, in the above-mentioned embodiment, unrolling 5, 6
Although the gap adjustment, that is, the evasion control is performed by the motor 66, it is of course possible to use a hydraulic or air cylinder using an electromagnetic proportional valve.

As is clear from the above embodiments, the present invention includes a paddy sensor 39 that detects the paddy before the kernels are removed from the rollers 5 and 6, and brown rice and paddy after the kernels are removed from the rollers 5 and 6. A mixed rice sensor 40 that detects the mixed rice of Each sensor 36, 39, 40 is connected in an interlocking manner, and the paddy sensor 36, 39, 40 is configured to control the removal rate, and detects the paddy supplied to the removal rolls 5, 6. A mixed rice sensor 40 detects the mixed rice from the unrolled rice 5 and 6 based on the detected light amount output of the brown rice sensor 39 and the detected light amount output of the brown rice sensor 36 that detects the brown rice after sorting and separation.
To be able to correct the amount of light detected by the mixed rice sensor 40, and to always obtain an appropriate reference value for the amount of light detected by the mixed rice sensor 40 even if the amount of reflected light of paddy and brown rice changes depending on the variety and properties (moisture content, surface color, etc.) In addition, since the output of the brown rice sensor 36 that performs sorting control is used, it is possible to easily simplify the omission rate detection structure, and improve the omission rate control function with a simpler omission rate detection structure compared to the conventional one. This has practical effects such as the ability to easily improve handling and operability.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic side view of the whole, Fig. 2 is a plan view of the same, Fig. 3 is a front explanatory view of the main part, and Fig. 4 is a diagram of the same part. The side view and FIG. 5 are electrical control circuit diagrams. 5, 6...Derolling, 36...Brown rice sensor,
38... Escape rate control mechanism (motor), 39... Paddy sensor, 40... Mixed rice sensor.

Claims (1)

[Scope of utility model registration request] A paddy sensor 39 that detects the unhulled paddy supplied to the unrolled grains 5 and 6, and a mixed rice sensor 40 that detects the mixed rice of brown rice and paddy after the grains have been threshed from the unrolled grains 5 and 6. A brown rice sensor 36 that detects the brown rice sorted and separated by the sorter 2 and performs sorting control.
and a de-rolling rate control mechanism 3 for de-rolling 5 and 6.
8, each of the sensors 36, 39, 40 is interlocked and connected, and each of the sensors 36, 39, 40 controls the shedding rate.