JPS60166069A - Cereal grain selector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates generally to grain sorting devices, and more particularly to:
The present invention relates to a grain sorting device that adjusts the position of a partition plate for partitioning the distribution boundaries of deculminated grains, undeculminated grains, and mixed grains thereof on a sorting board.

The purpose of this invention is to improve the accuracy of detecting the mixing ratio of dehulled grains and unhulled grains, to enable accurate setting of the partition position of the partition plate, and to improve the efficiency of sorting work. The object of the present invention is to provide a possible grain sorting device.

A feature of the present invention that achieves the above object is that a movable partition plate is provided at a boundary between the distribution boundaries of the dehulled grains, unhulled grains, and mixed grains thereof on the sorting plate.4. 12 and
A driving means 15 for moving the partition plate and a drive means 15 for moving the grains to be sorted on the sorting plate into an area where dehulled grains to be sorted on the sorting plate are concentratedly distributed or an area where unhusked grains are concentratedly distributed. It is equipped with an optical quantity measuring means 2 for detecting the appearance of grains, and has means 3A and 3B for storing optical quantity data of dehulled grains and unhulled grains, respectively, and the measurement information given from the optical quantity measuring means and means 3C for calculating the mixing rate of deculminated grains and non-IB2 culm grains from the measurement information based on the data given from the storage means; and a standard in which the value calculated by the means is set in advance. means 5D for outputting a different signal depending on the calculated value when the calculated value is reached; and means 5 for controlling the drive means 16 so as not to change the position of the partition plate based on the signal given from the means. There is a grain sorting device equipped with a

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a partially omitted side view of a grain sorting device, that is, a swinging sorter according to an embodiment of the present invention, and FIG. 2 is a side view of a grain sorting device, that is, a swinging sorter according to an embodiment of the present invention. FIG. 3 is a block circuit diagram of a control device installed in an oscillating sorter according to an embodiment of the present invention, and FIG. 4 is a plan view of a oscillating sorter according to an embodiment of the present invention. It shows a circuit diagram.

In FIG. 1, reference numeral 1 denotes a sorting board which is tilted on a machine base (not shown) and formed into a multi-stage shape, and is reciprocated diagonally up and down by a swinging device (not shown). Reference numeral 6 denotes a receiving tank which opens below the outlet chute 8 of the grain tank 7, and its lower part communicates with respective supply ports (not shown) provided on the inclined upper part of the sorting board 1. 9 is sorting board 1
There is a drain outlet installed at the bottom of the slope, as shown in Figure 2.
A partition plate 4 separates a dehulled grain area, that is, a brown rice area, and a mixed grain area, that is, a mixed rice area, and a brown rice discharge port 10 and a mixed rice discharge port 11 are formed. A paddy discharge port 13 is formed by partitioning the space.

The partition plate 4 has a drive shaft 14 installed along the discharge port 9.
The discharge port 9 is supported by a drive shaft 14 and is movable along the discharge port 9 by driving a drive device 15 such as a motor capable of forward and reverse rotation. A potentiometer 16 is provided on the other end side of the drive shaft 14.
It is interlocked with the drive device 15 via.

Reference number 2 is an optical quantity measuring means, that is, an optical sensor that detects the appearance of the grains to be sorted on the sorting board 1. For example, it is composed of a light emitting element, a light receiving element, a prism, etc. The sensor is configured to output different detection signals depending on the reflectance wavelength of light from the sensor. The sensor 2
is attached to the partition plate 4 in FIG. 2, but it is also possible to install it, for example, on the side of the brown rice area for more accurate sorting. Also, contrary to the above, it may be installed on the early region side.

Reference numeral 3 denotes a discrimination calculation device that distinguishes the detected grains into paddy and brown rice based on the measurement data provided from the optical hinger 2, and calculates the mixing rate of the paddy and brown rice. A first storage circuit A stores data such as reflectance, wavelength, etc. as fixed data, and a second storage circuit A stores optical quantity data of brown rice, such as reflectance, wavelength, etc., as fixed data.
It consists of a memory circuit B and a paddy/brown rice comparison circuit C that discriminates between paddy and brown rice and calculates the mixing rate thereof.

5, the drive device 1 according to the calculation result of the discrimination calculation device 3;
5, and is configured as shown in the block diagram of FIG. That is, D is a reference voltage output circuit that outputs two different reference voltages based on the mixing rate of paddy and brown rice calculated by the discrimination calculation device 3, and P is the reference voltage of the reference voltage output circuit and the potentiometer 16.
Ql is a comparator that operates when the output of differential amplifier P is on the + side, Q2 is a differential amplifier that amplifies the difference between the voltage of
is a comparator that operates when the output of the differential amplifier P is on one side, LJ+ and U2 are amplifiers, and R+ and .R2 are relay coils.

FIG. 4 shows a drive circuit diagram of the drive device 15.
is the relay a contact of relay coil R1, rl is the relay b contact of relay coil R1, r2 is the relay a contact of relay coil R2, 〒2 is the relay b contact of relay coil R2,
LS-1 is the limit switch on the brown rice side, s-2 is the limit switch on the paddy side, and 2 is the capacitor.

Next, the operation of the above configuration will be explained.

The grains in the grain tank 7 enter the receiving tank 6 through the outlet chute 8 and are supplied to the inclined upper part of the sorting board 1 from the supply port. Then, there is a sorting 511il that reciprocates diagonally up and down.
As it flows down, it is sorted by the difference in specific gravity,
Paddy is discharged from a paddy discharge port 13, brown rice is discharged from a brown rice discharge port 10, and mixed rice is discharged from a mixed rice discharge port 11.

In the grain sorting work performed in this way, the optical sensor 2 detects grains in a predetermined range (unit area) near the sorting distribution boundary between the brown rice area and the mixed rice area on the sorting board 1. Detected constantly. Based on the detection by the optical sensor 2, the discrimination calculation device 3 discriminates between paddy and brown rice, and calculates the mixing rate of the paddy and brown rice. The reference voltage output circuit is activated when the discrimination calculation device 3 determines that the partition plate 4 should be moved to the brown rice side based on the mixing rate of paddy and brown rice calculated by the discrimination calculation device 3r''. A reference voltage signal of a different level is output depending on the case where it is determined that the paddy should be moved to the side.The reference voltage signal corresponding to the mixing rate of paddy and brown rice output from this reference voltage output circuit and the voltage of the potentiometer 16 set according to the position of the partition plate 4 are input to the differential amplifier P. At this time, the position of the partition plate 4 is If it is located on the side, the input is input to comparator Q1, and relay coil R1 is energized.
relay a contact r1 closes and relay b contact d1
When the user hears this, the drive device 15 rotates forward and moves the partition plate 4 toward the brown rice side. Then, when the voltage of the potentiometer 16 is balanced with the reference voltage output circuit Da')N quasi-voltage, the driving device 15 is stopped.

Moreover, if the position of the partition plate 4 is located on the C brown rice side with respect to the position corresponding to the mixing rate of paddy and brown rice,
2, the relay coil R2 is energized, the relay a contact r2 of the relay coil R2 closes, and the relay b contact v2 opens, the drive device 15 rotates in the opposite direction, and the partition plate 4 is moved toward the paddy side. The drive device 15 stops when the voltage of the potentiometer 16 matches the reference voltage of the reference voltage output circuit.

As explained above, according to the present invention, when the value computed by the computing means reaches a preset reference value, the position of the partition plate is determined based on different signals output according to the computed value. Changed to C1 conventionally,
Image of a condensing lens and photodiode system that can be used to distinguish between paddy and brown rice by detecting the brightness, saturation, or hue of the reflected light from the 8 IC grains used in this type of oscillating sorter. Even if it is difficult to distinguish between paddy and brown rice using a detection device that combines sensors, it is possible to reliably distinguish between paddy and brown rice. Therefore, the partition plate can be accurately positioned at the position where the movable spoon separates brown rice and mixed rice, thereby preventing poor sorting and further improving C1 sorting efficiency.

It should be noted that this invention is not limited to the above-mentioned embodiments, and can be practiced in embodiments other than those described in (a) above.

[Brief explanation of the drawing]

FIG. 1 is a partially omitted side view of a crotch grain sorting device, ie, a swinging sorter, according to an embodiment of the present invention, and FIG. 2 is a sorting board that is partially included in the swinging sorter according to an embodiment of the present invention. FIG. 3 is a block circuit diagram of a control device installed in an oscillating sorter according to an embodiment of the present invention, and FIG. 4 is a partially omitted plan view of the oscillating sorter according to an embodiment of the present invention. It is a circuit diagram of a drive device. 2...Optical L sensor 3A, 3B...Storage means 3C.
... paddy, brown rice comparison circuit 4 ... partition plate 5 ... control means 5D ... signal output 12 ... partition plate 16 ... drive motor: ILir'r

Claims (1)

[Claims] A movable partition plate provided to partition the distribution boundary between dehulled grains, undegraded grains, and mixed grains on the sorting plate, a drive means for moving the partition plate, and a movable partition plate provided to partition the distribution boundary between dehulled grains, undegraded grains, and mixed grains thereof on the sorting plate; An optical quantity measuring means for detecting the appearance of the grains to be sorted on the sorting plate is provided in the area where the dehulled grains to be dehulled are concentratedly distributed or the area where the unhulled grains are concentratedly distributed. and a means for storing optical quantity data of the undeculled grains, respectively; means for calculating the mixing rate of grains and unhulled grains; and means for outputting a different signal depending on the calculated value when the value calculated by the means reaches a preset reference value. , and means for controlling the drive means to change the position of the partition plate based on a signal given from the means.