JPS641179B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hulling device that can automatically adjust the gap between derolls for removing supplied paddy.

An object of the present invention is to provide a hulling device that can maintain a constant removal rate depending on the amount of rice supplied to the removal roll and is durable.

In order to achieve this object, the present invention includes a pair of unrolling devices 2 driven by a drive device 1;
Gap adjustment device 3 that adjusts the gap between unrolling 2
, a paddy supply device 5 that accommodates paddy and supplies the paddy from the dispensing port 4 to between the de-rolls 2; and a control valve 6 that adjusts the amount of paddy delivered from the dispensing port 4.
a variable reference load setting means 7 for setting a variable reference load of the drive device 1 that changes according to changes in the opening degree of the control valve 6 under the condition that the removal rate of the paddy removed between the removal rolls 2 is constant; , constant low reference load setting means 8 for setting a constant low reference load of the drive device 1;
and detection means 9 for detecting the load of the drive device 1.
and a comparison device 10 for comparing the load detected by the detection means 9 with the variable reference load set by the variable reference load setting means 7 or the constant low reference load set by the constant low reference load setting means 8; The gap adjusting device 3 is adjusted so that both loads are matched by comparison.
A control device 11 that controls the paddy capacity of the paddy supplying device 5 detects that the paddy storage capacity of the paddy supplying device 5 is higher than a predetermined value and inputs the detected load and the variable reference load to the comparison device 10. A sensor 1 capable of detecting that the capacity is below a predetermined value and inputting the detected load and a certain reference load to a comparison device 10
2.

Hereinafter, one embodiment of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 shows a hulling device, in which a removing roll 2 is provided in a removing chamber 13. The roll-off 2 consists of a pair of main roll 2a and auxiliary roll 2b, and the main roll 2a is configured to be interlocked with the drive device 1 via a belt transmission device 14. Secondary role 2
b is configured to be interlocked with the main roll 2a via a gear train 15. The auxiliary roll 2b is attached to a gap adjustment device 3, so that the gap between the rolls 2a and 2b can be adjusted.

The gap adjustment device 3 has an adjustment rod 16, and the adjustment rod 1
One end of the arm 17 is screwed onto a connecting shaft 17 a that is pivotally supported on one end of the arm 17 , and the other end of the arm 17 is pivotally supported on an arm support shaft 18 . A sub roll 2b is supported in the middle of the arm 17. A worm wheel 19a is connected to the other end of the adjustment rod 16 and meshed with a worm 19b on the adjustment motor 20 side.

The upper side of the escape chamber 13 stores paddy and has a feed-out port 4.
A hopper-shaped paddy supply device 5 is provided for supplying paddy from the unrolled paddy to between the derolls 2. The paddy supply device 5 has a sensor 12 that detects the stored paddy.
The sensor 12 includes a first sensor 12a that turns off when it detects paddy, and a second sensor 1 that turns on when it detects paddy.
2b are arranged one above the other. A control valve 6 is provided below the feed-out port 4 of the paddy supply device 5 to adjust the amount of paddy fed out from the feed-out port 4. The control valve 6 is supported so as to be able to swing, and the paddy pay-out roll 21 is linked to the main roll 2a.
Opening/closing adjustment of the feeding port 4 is performed. The opening degree of the control valve 6 is configured to be detectable by, for example, a potentiometer 22. 5a is a shutter.

The potentiometer 22 is a signal processing device A.
It is incorporated in the variable reference load setting means 7 as shown in FIG. The variable reference load setting means 7 further includes an evasion rate adjustment device 23 and an adjustment amplification device 24, and has a constant deviance rate adjusted by the deviance rate adjustment device 23,
For example, with respect to 85%, a variable reference load of the drive device 1 is set and output, which changes as shown in FIG. 3 in accordance with a change in the valve opening of the control valve 6 detected by the potentiometer 22. The variable reference load setting means 7 is connected to one input terminal 10a of the comparator 10. Further connected to the input terminal 10a is constant low reference load setting means 8 for setting and outputting the constant low reference load of the drive device 1 as shown in FIG. The constant low reference load setting means 8 has a voltage setting circuit 25 and a switching circuit 26. The voltage setting circuit 25 outputs a low level reference voltage. The switching circuit 26 receives a high level signal 1.
It operates in response to the voltage setting circuit 25 and blocks the output of the voltage setting circuit 25. An inverter 27 is provided on the input side of the first switching circuit 26, and the first sensor 12a
It is connected to the. The first sensor 12a is connected to the output terminal of the variable reference load setting means 7 via a buffer 28 and a second switching circuit 29.
Note that 30 is a diode. On the other hand, the drive device 1 is provided with a detection means 9 for detecting the load of the drive device, and the detection means 9 is connected to the other input terminal 10b of the comparison device 10.

The comparison device 10 has a control device 11 on its output side. The control device 11 has a first relay 31, a second relay 32, a third switching circuit 33, and a fourth switching circuit 34, and the first relay 31 and the third switching circuit 33 are connected to one output terminal 10c of the comparison device 10. The second relay 31 and the fourth switching circuit 34 are connected to the other output terminal 10d. The first relay contact 31a of the first relay 31 is interposed between the forward rotation side terminal of the adjustment motor 20 and the power source, and the second relay contact 32a of the second relay 32 is interposed between the forward rotation side terminal of the adjustment motor 20 and the power source. It is set up. The first relay 31 and the second relay 32 are connected to the second sensor 12 via a fifth switching circuit 35.
connected to b.

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

The paddy supply device 5 is made to store paddy. Paddy storage device 5
When the inside is filled with paddy, the first sensor 12
a and the second sensor 12b both detect paddy, the first sensor 12a is turned OFF, and the second sensor 12
b is turned on. When the first sensor is OFF, the low level signal O is input to the buffer 28, so the second switching circuit 29 is OFF, and the output from the variable reference load setting means 7 is input to the input terminal 10a of the comparator 10. Ru. The output from the variable reference load setting means 7 changes as shown in FIG. 3 in accordance with the detection of the opening degree of the control valve 6 by the potentiometer 22 when the escape ratio is set at a constant escape ratio, for example 85%, by the escape ratio adjustment device 23. This is the standard load.
On the other hand, the low level signal 0 from the first sensor 12a is also input to the inverter 27, which outputs the high level signal 1 to the first switching circuit 26.
The first switching circuit 26 turns ON upon receiving the signal 1.
Therefore, the output of the voltage setting circuit 25 is the output of the comparator 10.
input to the input terminal 10a. Further, when the second sensor 12a is turned on, the fifth switching circuit 35 is turned on, and the comparison device 10 is turned on.
The state is such that either the first relay 31 or the second relay 32 is operated depending on the output from the relay.

When the shutter 5a is opened, paddy is supplied from the feed-out port 4 to the de-rolling 2 while being regulated by the control valve 6.
In the removing roll 2, the rice is removed by a main roll 2a and a sub roll 2b which are rotated by the drive of the drive device 1.

For example, when the control valve 6 is adjusted in the closing direction due to a large amount of paddy accumulated in a supply tank that gradually supplies paddy to a swing sorting device (not shown), the paddy is supplied to the derolling device 2. becomes less. In this case, since the gap between the roll-off rolls 2 does not change, the load on the drive device 1 becomes smaller than the load corresponding to the removal rate of 85%, and the removal rate changes. The load on the drive device 1 is detected by the detection means 9 and input to the input terminal 10b of the drive device 10. The comparator 10 compares the load detected by the detection means 9 with the reference load from the variable reference load setting means 7 corresponding to the opening degree of the control valve 6, and determines whether the detected load is too low and outputs from the output terminal 10d. do. The fourth switching circuit 34 is turned on by the output from the output terminal 10d, and the second relay 32 is operated. The second relay contact 32a is closed by the operation of the second relay 32, the adjustment motor 20 is reversed, and the adjustment rod 16 is reversed through the worm 19b and the worm wheel 19a. 17a, the arm 17 is rotated toward the main roll 2a using the arm support shaft 18 as a fulcrum. By this adjustment, the gap between the unrolling 2 becomes smaller and the drive device 1
The load on the computer is increasing. When the load of the drive device 1 matches the reference load of the variable reference load setting means 7, the output from the output terminal 10d of the comparator 10 disappears, and contrary to the above, the adjustment motor 20 is stopped, maintaining the escape ratio of 85%. The gap between the unrolled parts 2 is adjusted as follows. If the control valve 6 is opened in this state, the amount of paddy supplied to the derolling device 2 will increase, the load on the drive device 1 will increase, and the derolling rate will fluctuate, but in this case, the output of the comparison device 10 It is output from the terminal 10c, and by the operation of the first relay 31, the gap between the derolls 2 is adjusted so as to maintain the derolling rate of 85%.

Near the end of the work, the amount of paddy stored in the paddy supply device 5 decreases, and only the second sensor 12b detects the paddy. In this case, the first sensor 12a is turned on and the second sensor 12b is turned off. Therefore, the first switching circuit 26 is turned off, the second switching circuit 29 is turned on, and the output from the voltage setting circuit 25 is input to the input terminal 10a of the comparator 10. The output of the voltage setting circuit 25 is a constant low reference load regardless of the opening degree of the control valve 6. Therefore, regardless of the control valve 6, the gap of the derolling 2 is adjusted by the same action as described above so that the detected load of the detection means 9 matches the reference load from the constant low reference load setting means 8. When the paddy supply device 5 runs out of paddy, the second sensor 12b no longer detects paddy, resulting in OFR. Therefore, the fifth switching circuit 35 is turned off, and neither the first relay 31 nor the second relay 32 operates. Therefore, the gap between the unrolled rollers 2 is maintained as it is.

As can be understood from the above, according to the configuration of the present invention, when the paddy capacity of the paddy supply device is greater than a predetermined value, the sensor detects this and the detected load detected by the detection device and the variable reference load setting means are used. A variable reference load of 1 is inputted into a comparator, and based on the comparison by the comparator, the derolling gap can be adjusted by a gap adjusting device so as to match both loads. Therefore, depending on the change in the opening of the control valve,
You can always get a certain evasion rate. At the same time, when the sensor detects that the paddy capacity is below a predetermined value, the load detected by the detection device and the constant low reference load from the constant low reference load setting means can be input to the comparison device, and both loads are matched. The derolling gap can be adjusted to Therefore, when the amount of paddy supplied from the paddy supplying device during derolling is small even though the control valve is wide open due to the paddy storage capacity of the paddy supplying device being less than a predetermined value, the detected load If the gap is adjusted to match the variable standard load, the detected load will match the high standard load according to the valve opening degree, and the gap will be adjusted smaller than necessary even though the amount of paddy is small, resulting in mutual unrolling. However, since the detected load is made to match a constant low reference load, the roll gap is not adjusted to be unnecessarily small, and collisions between unrolled rolls can be minimized. Therefore, the durability of the rice hulling device can be improved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway front view of the hulling device, Fig. 2 is a circuit diagram, and Fig. 3 is a partially cutaway front view of the hulling device.
The figure is a load diagram. DESCRIPTION OF SYMBOLS 1... Drive device, 2... De-rolling, 3... Gap adjustment device, 4... Payout port, 5... Paddy supply device, 6... Control valve, 7... Variable reference load setting means, 8... Constant reference load setting means, 9...Detection means, 10...Comparison device, 11...Control device, 12
...Sensor.

Claims (1)

[Claims] 1. A pair of unrollers driven by a drive device, a gap adjustment device that adjusts the gap between the unrollers, a paddy supply device that accommodates the paddy and supplies the paddy from the unroller to the unroller, and the unroller. a control valve that adjusts the amount of paddy fed out from the paddy; and a variable drive device that changes in accordance with changes in the opening of the control valve under the condition that the removal rate of the paddy removed between derolling is constant. variable reference load setting means for setting a reference load; constant low reference load setting means for setting a constant low reference load of the drive device; detection means for detecting the load of the drive device; and a load detected by the detection means. a comparison device for comparing the variable reference load set by the variable reference load setting means or the constant low reference load set by the constant low reference load setting means, and the gap adjustment device so as to match both loads by comparison by the comparison device. A control device to control and detecting that the paddy capacity of the paddy supply device is greater than a predetermined value and inputting the detected load and the variable reference load to a comparison device,
A rice hulling device characterized by having a sensor capable of detecting that the amount of paddy accommodated in the paddy supply device is less than a predetermined value and inputting the detected load and a constant low reference load to a comparison device.