JPH05212303A - Apparatus for regulating gap between hulling rolls - Google Patents

Abstract

PURPOSE:To eliminate offset abrasion by providing a non-control time zone not adjusting the gap between hulling rolls by interrupting the automatic adjusting control of the gap between the hulling rolls for a predetermined time by the control of a dehulling ratio or the control of a load current at the begin ning of the start of hulling work or on the way of hulling work. CONSTITUTION:In a hulling sorter constituted so that the falling hulled rice from a hulling part having a pair of hulling rolls is winnowed in a winnowing part to be sorted by a shaking sorter, a dehulling ratio sensor 24 detecting the dehulling ratio of the falling hulled rice from the hulling part, a sensor 25 detecting the eccentricity of the hulling rolls 9 and a load current sensor 27 detecting the load current value of the motor 36 for driving the hulling rolls are provided. The gap between the hulling rolls is regulated and controlled on the basis of the detected dehulling ratio or the detected load current value by a CPU 28. At this time, a non control time zone is set by the CPU 28 and the regulation and control of the gap between the hulling rolls can be interrupted for a predetermined time at the beginning of the start of hulling work or on the way of hulling work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clearance adjusting device for a hulling roll, which hulls a pair of hulling rolls.

[0002]

2. Description of the Related Art Problems to be Solved by the Invention A depletion rate sensor detects the depletion rate of deciduous rice hulled by a pair of hulling rolls, and the detected depletion rate falls within a predetermined range. The gap between the pair of hulling rolls is adjusted to achieve the desired load, or the load current value of the driving motor for the hulling rolls is detected, and the detected load current value is the specified load. There is one that adjusts and controls the gap of the hulling roll so that the current value is reached, and thus the predetermined removal rate is maintained.

In such a clearance adjusting device for a hulling roll, when the initial clearance of the hulling roll is adjusted and set at the beginning of work, the adjustment control is immediately performed by the removal rate or the load current value. This is because the concentricity of the diameter of the hull rolling roll is changed.For this reason, the removal rate or load current value of the hull rolling When the automatic adjustment control is started, uneven wear of the hulling roll is promoted, it is difficult to repair the uneven wear, the durability of the hulling roll is reduced, and brown rice becomes broken rice. There was a problem. In view of this, the present invention sets the non-controlled time zone in which the automatic clearance adjustment of the hulling roll is not performed at the initial stage of work, etc., and the hulling work is performed for a predetermined time in the non-controlled state. The uneven wear of the roll is eliminated, and then the clearance automatic adjustment control of the hulling roll is started to solve the drawbacks of the conventional device.

[0004]

The technical means of the present invention for solving such a technical problem is the removal rate sensor 2
In the hulling device for adjusting and controlling the gap between the hulling rolls 9 based on the detected removal rate of No. 4 or the detected load current value of the hulling roll driving motor 26, the hulling device is removed at the initial stage of hulling work or during the hulling work. A hull rolling roll is characterized in that a non-control time zone is provided in which automatic hull roll gap adjustment control by rate control or load current control is interrupted for a predetermined time to prevent hull roll gap adjustment. This is the structure of the gap adjusting device.

[0005]

Embodiments of the invention shown in FIGS. 1 to 3 will be described below. First, the structure of the embodiment will be described. In this hulling / sorting machine, the hulling portion 1 and the hulling portion 1 for hulling are performed.
And a fried-grain conveying unit 4 for selecting the deciduous rice after the wind-selection in the deciduous-rice wind-selecting unit 2. ing. Then, the hulled portion 1 is arranged in the upper front part of the machine body, and the downsized rice wind selection part 2 is arranged in the lower front part of the machine body. The mixed rice fried machine 5 and the paddy fried machine 6 of the grain transport unit 4 are arranged, and the swing sorting device 3 is placed behind the mixed rice fried machine 5 and the paddy fried grain machine 6 to perform the swing sorting. This is a configuration in which the brown rice fried machine 7 of the fried food transport unit 4 is arranged behind the device 3.

The hulling section 1 includes a hull hopper 8, a hulling roll 9,
9 is the interior of the hulling chamber 10 and the like, and the hulled rice that has been hulled by the hulling section 1 is the downhill rice wind selection path section 2 below.
It is a structure that flows into. The sliding rice wind selection unit 2 includes a sliding rice wind selection box 11, a sliding rice wind selection box 11, and a sliding rice wind selection path 12, which is obliquely provided from the rear lower part to the upper front. Gutter 1
3, it is composed of a scraped-off rice gutter 14, a suction fan 15, a dust pipe 16 and the like.

Next, the rocking / sorting device 3 will be described. The rocking / sorting plates 17, 17, ... Are provided with a concave / convex portion for sorting. Is the lower discharge side, and one side in the horizontal direction that is orthogonal to the vertical direction is the upper side and the lower side on the opposite side is the lower side, and the swing selection plates 17, 17, ... Are set in the vertical and horizontal directions. Both surfaces are inclined.

The swing selecting plates 17, 17, ... Are the swing arm 1.
It is supported by 8 and 18 so as to be capable of reciprocating oscillating vertically obliquely, and one oscillating arm 18, 18 is oscillated by an oscillating device 19. A supply port is provided on the vertical supply side of the rocking sorting plates 17, 17, ... And on the side closer to the swaying side, and the scraped rice is supplied through the distribution gutter 20 and the distribution case 21. To be done. Then, the mixed rice has a large grain size, a large specific gravity, and a large friction coefficient. Due to the large specific gravity, the small brown rice has a non-uniform distribution in the horizontal direction, which is the sorting direction. Undistributed rice with large specific gravity is distributed in the lateral sway, and unmixed mixed rice of unmixed rice and undistributed rice is distributed in the middle. A brown rice partition plate 22 and a paddy partition plate 23 are arranged on the discharge side of the rocking / sorting plate 17, and the brown rice is partitioned by the brown rice partition plate 22 and taken out, and then taken out of the machine by the brown rice lifting machine 7, The mixed rice partitioned by the brown rice partition plate 22 and the paddy partition plate 23 is circulated through the mixed rice flow path (not shown) and the mixed rice fried machine 5 again to the swing sorting device 3 for re-sorting, and The paddy separated by the paddy partition plate 23 passes through the paddy flow path (not shown) and the paddy grain elevator 6 to be reduced to the paddy hull portion 1 to be padded again.

Next, FIGS. 2 and 3 will be described. Two
Reference numeral 4 is a light-emitting element and a light-receiving element, and is a removal rate sensor that detects the removal rate of the removed rice from the removed grain portion 1. The scraped rice selected by the wind is
The removal rate sensor 24 is sampled and supplied. Denoted at 25 is an offset sensor for the hulling rolls 9 and 9, which is constituted by a vibrometer in this embodiment, and detects the poor concentricity of the hulling rolls 9 and 9 by vibrating the hulling rolls 9. , 9 are detected. It should be noted that the deviation sensor 25 may be any one that detects a deformed state in which the concentricity of the hulling rolls 9, 9 is poor, and that detects the outer peripheral portion of the hulling rolls 9, 9 by an optical sensor, or A device that detects the pressing force applied to the bearings of the hulling rolls 9 and 9, a device that detects the load current value of the hulling roll driving motor 26 with the load current sensor 27, and a deformed state based on the variation in the detected value, etc. , Various ones can be selected.

The depletion rate sensor 24 is inputted to a calculation control section 28 including a CPU having a built-in calculation section and a register section, a program memory and a calculation memory through a sample hold circuit and an A / D conversion circuit. At the same time, the deviation sensor 25 is also connected to the arithmetic control unit 28. 29
Is a take-off rate setting switch. This take-off setting switch 29
Has a function of setting the shedding rate of the scrapped rice in the paddy hull part 1,
It is connected to the arithmetic control unit 28. Further, the load current sensor 27, the paddy supply valve opening sensor 32 that detects the opening of the paddy supply control valve 31, the supply amount setting switch 33, and the operation switch 34 are connected to the arithmetic and control unit 28. Further, a roll gap adjusting motor 36 for driving the roll gap adjusting means 35 of the hulling rolls 9 and 9 and a paddy shutter for adjusting opening / closing of the paddy shutter 37 via an output interface and a drive circuit from the arithmetic and control unit 28. Opening / closing adjusting motor 38 and paddy supply adjusting motor 39 for adjusting opening / closing of the paddy supply adjusting valve 31.
The control command signal is output to.

Next, the control contents of the arithmetic control unit 28 will be described. First, the removal rate setting switch 29 is set to a predetermined scale to set a desired removal rate, and when the operation switch 34 is operated, the rotating parts of the paddy sorting machine are driven. Then, the initial clearance setting control of the hulling rolls 9, 9, that is, the calculation control unit 2
An open command signal from the No. 8 is sent to the roll gap adjusting motor 36 to operate the roll gap adjusting means 35 to open the gap between the hulling rolls 9 and 9 for a predetermined time.
When the non-contact state in which the load current value detected by does not change is detected, the gap between the hulling rolls 9 and 9 is narrowed, and then the increase in the load current value is detected to detect slight contact between the hulling rolls 9 and 9. The roll gap adjusting means 35 is opened for a predetermined period of time to open the gap between the hulling rolls 9 for a predetermined period of time to set an initial gap (for example, 1 mm).

When setting the initial clearance of the hulling roll, a roll clearance selection switch (not shown) is connected to the arithmetic control unit 28, and the roll clearance selection switch is set to wide, standard or narrow. By selecting one, the hulling roll 9,
When the opening movement time after contact of 9 is set to be adjustable to be set long or short, the initial gap that is easy to hull, the type that is difficult to hull, the type that is easy to hull, or the type that the initial gap matches the power supply voltage situation, etc. It is convenient to be able to. Also,
In connection with the switching operation of the roll gap selection switch (not shown), the control reference value for automatically adjusting the gap of the hulling roll by the load current value is also wide / standard / narrow. When the configuration is adjusted and set, it is possible to prevent the grain damage during the load current control. Next, an opening command signal from the arithmetic control unit 28 is output to the paddy supply adjusting motor 39 for a predetermined time, and the initial opening setting for opening the paddy supply adjusting valve 31 of the paddy hull 1 to a predetermined opening (for example, 10 mm) is performed. Then, the hulling work is started, and then, based on the large / medium / small adjustment setting of the supply amount setting switch 33,
A control command signal is sent to the paddy supply adjusting motor 39, and the paddy supply adjusting valve 31 is adjusted to the set efficiency opening. Incidentally, in connection with the adjustment setting of the supply amount setting switch 33, the control reference value of the hulling roll gap adjustment based on the load current value is changed. Next, when the detection information from the deviation sensor 25 is input to the arithmetic control unit 28 and a vibration of a reference value or more is detected, it is determined that the hulling rolls 9 and 9 have a bad concentricity and are deformed,
Without performing the hull roll gap adjustment control based on the removal rate detected by the shedding rate sensor 24 or the load current value of the hulling roll driving motor 26, the hulling roll is controlled for a predetermined time (for example, 5 minutes). Continuing the hulling work in a non-controlled state without gap adjustment. During this hulling operation, when the hulling rolls 9, 9 have insufficient concentricity and are rounded, and the detection information of the deflection sensor 25 falls within the reference value, the removal of the next stroke is performed. Transition to rate control or load current value control. It should be noted that instead of the hulling work for a predetermined time in the non-controlled state based on the detection information by the deviation sensor 25, after the initial gap setting of the hulling rolls 9, 9 is automatically performed for the non-controlled state for the predetermined time. It is configured to shift to the rounding process of the hulling roll by continuing the hulling work in the above, or to the rounding process of this non-controlled state at a predetermined rate during the removal rate control or the load current value control. It may be configured to. Next, the removal rate control is entered, and first, the removal rate sensor 24
The amount of light is adjusted so that the light emitting element is adjusted to an amount of light appropriate for discriminating between paddy and brown rice, and then the voltage signal of the grain that has passed through the removal rate sensor 24 is applied to the sample hold circuit and A
When the voltage signal is directly input to the arithmetic control unit 28 via the D / D conversion circuit and the voltage signal of a predetermined number of sample grains is read, the removal rate is reduced. Is calculated. If the light amount of the removal rate sensor 24 is adjusted during the non-controlled state in which the removal rate control is stopped, the removal rate control can be started quickly. Next, the removal rate setting switch 29 in the arithmetic control unit 28
The control reference depletion rate set in step 1 is compared with the calculated detected depletion rate. If the control reference depletion rate is higher or lower than the calculated depletion rate, the roll gap adjustment motor 36 opens or A closing command signal is output, the gap between the hulling rolls 9, 9 is adjusted to a predetermined amount on the open side or the closed side, and the calculated removal rate is returned to the set removal rate. Within the range, the control command signal is not output, and the hulling work is performed while maintaining the hulling roll gap as it is.

Further, instead of the removal rate control, the hull roll gap may be adjusted by controlling the load current. The hulling rolls 9 and 9 are detected by the load current value detected by the load current sensor 27.
In controlling the clearance of the paddy supply control valve 31, the control reference value is set to be high or low depending on the opening degree of the paddy supply control valve 31. As shown in FIG. The control width of the control reference line 40 in the small amount supply state when the opening is narrow is not output. The neutral width is narrowed, and the large amount supply state when the pad opening of the paddy supply control valve 31 is wide. In this configuration, the neutral width at which the control signal for the roll gap on the control reference line 41 is not output is set wide. With such a configuration, a so-called hunting phenomenon, in which the wide adjustment of the clearance between the hulling rolls 9 and 9 is repeated when the paddy supply control valve 31 is slightly adjusted when the large supply amount is set, is prevented. The abrasion speed of the hulling rolls 9, 9 can be reduced, and the durability can be improved. (Note that the paddy supply control valve 31 and the mixed rice hopper 42 may be interlocked with each other, and the paddy supply control valve 31 may be adjusted in association with the increase or decrease in the grain amount of the mixed rice hopper 42.) Next, the operation of the embodiment will be described.

When hulling work is performed, the grain is supplied to the grain hopper 8 of the grain hull portion 1 and the operation switch 34 is turned on. Then, the paddy is hulled by the hulling rolls 9 and 9, and the slidable rice flows into the slidable rice wind selecting section 2 below, and passes through the rice hull suction fan 15 having a low specific gravity and the dust exhaust pipe 16. The mixed rice with a high specific gravity discharged to the outside of the machine is dropped and sorted on the scraped rice receiving trough 14, and then,
The mixed rice is fried by the mixed rice fried machine 5 and supplied to the rocking sorting plates 17, 17, ... After passing through the distribution gutter 20 and the distribution case 21. The mixed rice supplied in this way is oscillated up and down in the horizontal direction, and depending on the grain size, the specific gravity, the friction coefficient, etc. Uneven rice is unevenly distributed on the swaying side, and unhulled rice, which has a larger and lighter specific gravity than unbrown rice, is unevenly distributed on the swaying side in the lateral direction, and unmixed mixed rice of unhulled rice and undistributed rice is unevenly distributed in the middle part. Grains are separated and sorted by a brown rice partition plate 22 and a paddy partition plate 23.

The hulls are sorted as described above.
Although the gap between the hulling rolls 9 and 9 is hulled while being automatically adjusted by the removal rate control or the load current value control, the concentricity of the hulling rolls 9 and 9 is detected based on the detection information from the deviation sensor 25. If it is badly deformed, the removal rate control or the load current value control is interrupted, and the hulling work is performed for a predetermined time in a non-controlled state in which the hulling roll gap is not adjusted,
The hulling rolls 9, 9 are circularized due to wear of the portions with insufficient concentricity, and uneven wear of the hulling rolls 9, 9 is prevented,
The durability can be improved.

[0016]

During the hulling work of the hulling rolls 9 and 9,
The hulling is performed while automatically adjusting the gap between the hulling rolls 9 and 9 by the removal rate control or the load current value control. Since the process proceeds to the hulling work process for a predetermined time in a non-controlled state in which the gap control of the hulling rolls in which the load current value control has been interrupted is not performed, the progress of uneven wear of the hulling rolls 9, 9 is suppressed, and the hulling rolls are suppressed. The concentricity of the rolls 9, 9 can be rounded due to wear, and uneven wear of the hulling rolls 9, 9 can be prevented and durability can be improved.

[Brief description of drawings]

[Figure 1] Whole cut side view

FIG. 2 is a cutaway side view of a main part.

FIG. 3 is a block diagram.

[Figure 4] Graph

[Explanation of symbols]

 1 Rice hulling part 2 Sliding rice wind selection part 3 Swing sorting device 4 Lifting grain transport part 5 Mixed rice grain lifting machine 6 Paddy grain lifting machine 7 Brown rice graining machine 8 Paddy hopper 9 Paddy roll 10 Paddy room 11 Sliding Rice Wind Selection Box 12 Sliding Rice Wind Selection Path 13 Polished Rice Gutter 14 Sliding Rice Gutter 15 Suction Fan 16 Dust Cylinder 17 Swing Selection Plate 18 Swing Arm 19 Swing Device 20 Distribution Gutter 21 Distribution case 22 Brown rice partition plate 23 Paddy partition plate 24 Depletion rate sensor 25 Deflection sensor 26 Rice hull roll drive motor 27 Load current sensor 28 Computation controller 29 Dehulling rate setting switch 31 Paddy supply control valve 32 Paddy supply valve open Degree sensor 33 Supply amount setting switch 34 Operation switch 35 Roll gap adjusting means 36 Roll gap adjusting motor 37 Paddy shutter 38 Paddy shutter opening / closing adjusting motor 39 Paddy supply adjusting motor 40 Control reference line 41 Control reference line 2 mixed rice hopper

Claims (1)

[Claims] 1. A hulling operation in a hulling device for adjusting and controlling the gap between hulling rolls 9 on the basis of a husking rate detected by a husking rate sensor 24 or a load current value detected by a hulling roll driving motor 26. In the initial stage or during the hulling work, the automatic adjustment control of the hulling roll gap by the removal rate control or the load current control was interrupted for a predetermined time to provide a non-control time zone in which the hulling roll gap was not adjusted. A device for adjusting the clearance of a hulling roll.