JPS6121740A - Dehulling detection method of hulling machine - 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] Industrial applications This invention relates to a method for detecting hulling in a hulling machine.

Problems to be Solved by the Invention When using a dehulling sensor to detect the dehulling state based on the difference in the way paddy and brown rice are detected, the output level may vary depending on individual differences in the sensor itself, grain variety, crop, etc. Detection based on output difference is difficult and unreliable because of the difference.

Means for Solving the Problem The present invention is a husking sensor (2) for detecting the scraped rice being scraped out by a husking device (1) and knowing the husking state. This is a method for detecting the hulling of the huller, in which the hulling state of the hulled rice is calculated by detecting in advance the hulling of the rice to be supplied to the huller, and using this hulling detection as a reference value.

Functions and Effects of the Invention The husking state of the husked rice that is husked by the husking device (1) is detected by the husking sensor (2), which detects the paddy supplied in advance and uses this detected value as a reference. do. Next, among the values detected from the washed rice, only the paddy detection reference value is counted, and the ratio is calculated by, for example, increasing the total number of detected grains to 1 or more, thereby detecting the shedding state of the washed rice. This paddy detection standard value is directly detected by the paddy being hulled, so it is possible to determine the accurate standard value, which may affect individual differences in the hulling sensor (2), grain variety, crop, etc. Since the unhulled rice can be detected without being removed, the unhulled state can be detected accurately and easily.

Embodiment In the illustrated example, the hulling device (1) is provided with a paddy supply hopper (3) at the top, a shutter (4) and an on-off valve (5) are installed at the bottom of the hopper (3), and a shutter (4) and an on-off valve (5) are installed at the bottom of the hopper (3). The structure includes a pair of left and right stripping rolls (6) (6).

Below the scraping device (1), there are scraping rolls (6) (6).
Detection box (7) that detects washed rice that has been dehulled and wind-selected
has been established.

A hopper (8) is provided in the upper part of the detection box (7) and a discharge port (9) is provided in the lower part, and the outer peripheral surface of the feed roll (1o) is placed close to the lower end of the hopper (8). It is set up.

The feed roll (10) is drum-shaped and has recesses (11) arranged at equal intervals on its outer peripheral surface, and is fitted onto a motor (19) shaft (20), and the rotation of the feed roll (1o) causes the hopper (
8) The structure is such that the grains flowing down from inside are captured by the recesses (11).

Also, from the inner wall side of the detection box (7), there is a pre-release sensor (2).
The roller is oriented toward the center of the delivery roll (1o) and is mounted close to the outer peripheral surface of the delivery roll (1o).

The dehulling sensor (2) is configured to emit light and is equipped with a light receiving element to detect grains in the recesses (11) of the feed roll (10).

There is a paddy passageway (12) on the side of the paddy supply hopper (3).
The upper part of this passage (12) is a hopper (3),
Further, the lower portions communicate with the hoppers (8) of the detection box (7).

A shutter (13) is provided on the entrance side of the paddy passage (12) and 9 to open and close this passage (12), and a delay timer is provided to open the shutter (13) for a revised time when the machine is switched on. A solenoid (14) is provided.

The control system is configured such that the output first detected by the skidding sensor (2) is amplified by the comparison amplifier circuit (15), and then input to the control circuit (16), where the output value is stored (Figure 3). .

Next, the output detected by the cutting sensor (2) is amplified by the comparison amplifier circuit (15) and input to the control circuit (16), which counts the values that are at the same level as the stored cutting value and also counts the number of detections. The comparison amplifier circuit (15) compares this ratio with the input set ratio and outputs the difference between the ratio and the input cell ratio as positive and negative signals, and the control circuit (16) The configuration is such that electrical control is performed to output the signal to the control motor drive circuit (17) and drive the motor (18).

When paddy is put into the paddy supply hopper (3) and the machine is turned on, the solenoid (14) is energized, the shutter (13) is opened for the time set by the timer, and the paddy flows down the paddy passage (12). The paddy fed out from the hopper (8) and entering the recess (11) of the feeding roll (10) is detected by the dehulling sensor (2), amplified and stored as a reference value in the control circuit (16).

When the shutter (4) of the paddy supply hopper (3) is opened, the paddy flows down and is dehulled by the dehulling rolls (6) (6), and the wind-selected crushed rice enters the detection box (7) and passes through the hopper. (8
) is fed out and the recess (1
1) and is detected by the sensor (2) that takes off the clothes. This detection output is amplified by the comparison amplifier circuit (15) and the control circuit (J
6) Compare with the reference value stored in step 6) and count the values at the same level as paddy. The shedding state can be detected by calculating the ratio between the number of detected grains and the number of paddy counts.

In addition, if the shedding rate is input and set, the difference is output from the control circuit (16) to the control motor drive circuit (17) as a positive or negative signal by comparing it with the input cent value and driving the control motor (1
8) to control the gap adjustment mechanism of the depulping rolls (6) (6).

[Brief explanation of drawings]

The figure shows one embodiment of the present invention. The figure is a partially sectional side view, FIG. 2 is a partially sectional front view, and FIG. 3 is a block diagram of the control system. In the figure, reference numeral (1) indicates a deflation device, and symbol (2) indicates a deflation sensor.

Claims (1)

[Claims] A husking sensor (2) is used to detect the husked rice scraped out by the husking device (1) and to know the husking state, and the husking device (1)
A husking detection method for a hulling machine that detects in advance the paddy to be supplied to a huller, and calculates the husking state of the washed rice using the detected paddy as a reference value.