JPH06154626A - Gap adjusting device for rice-hulling roll - Google Patents

Abstract

PURPOSE:To continue a rice-hulling operation while maintaining a stable rice-hulling roll gap by providing a means for adjusting the rice-hulling roll gap, means for storing a load current value, means for detecting the sharp increase in a load current value, output means for rapid adjustment to open the rice-hulling roll gap and means for correcting the decrease in an overload reference current value. CONSTITUTION:The detected load current value detected a load current sensor is successively stored into the storing device during the automatic adjustment to open or close the gap between the rice-hulling rolls 9 and 9. The gap opening command signal to open the gap of the rice-hulling rolls 9, 9 until the detected load current value attains the load current before the detection of the rapidly increased load current value is outputted from an arithmetic control section when the rapid increase in the detected load current value to the prescribed load value or above in the prescribed period is detected in the detecting and storing process of the detected load current value. As a result, the overload of a main motor 27 is prevented and the overload reference current value of the gap adjustment of the rice-hulling rolls 9 is decreased and changed down to the load current value before the detection of the rapidly increased load current value, by which the overload reference current value is corrected to a decrease side.

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 that hulls a pair of hulling rolls.

[0002]

2. Description of the Related Art A dehulling rate sensor detects a dehulling rate of sludge that has been hulled by a pair of hulling rolls, and a pair of hulls is provided so that the detected dehulling rate reaches a predetermined dehulling rate. The gap between the sliding rolls is adjusted to be opened or closed, or the load current value of the motor for driving the hulling roll is detected, and the detected load current value becomes the predetermined reference load current value. There is one that automatically opens and closes the gap of the hulling roll so that it is maintained.

[0003]

SUMMARY OF THE INVENTION In such an automatic clearance adjusting device for a hulling roll, the hull is controlled by opening and closing to a proper hulling roll clearance on the basis of the removal rate or the load current value. When the motor for driving the hulling roll detects a predetermined reference overload current value, the breaker is activated to stop the motor and the hulling work is stopped.

When such a conventional device is applied to a system of driving a hulling roll with a transmission belt that receives the transmission of rotational power from a motor, the hulling roll is driven in a no-load state of each machine. The load current value varies from machine to machine due to variations in the load current value of the motor, differences in the power supply voltage due to power supply conditions, differences in the tension of the conduction belt, etc., which causes the machine to stop frequently due to overload, or Problems such as conduction belt breakage due to paddy jam occurred.

Therefore, according to the present invention, the reference overload current value according to the load state of the motor for driving each machine is removed during the hulling work without special adjustment work of the reference overload current value of each machine. The present invention intends to eliminate the drawbacks of the conventional device by automatically correcting and setting the above.

[0006]

The technical means of the present invention for solving such a technical problem is a pair of hulling rolls 9 and 9 for hulling and driving the hulling rolls 9 and 9. Motor 27 and a transmission belt 28 that receives the rotational power of the motor 27 to rotate the pair of hulling rolls 9, 9.
And a hulling device having a hulling roll 9 gap adjusting means for opening and closing the gap between the pair of hulling rolls 9 and 9, the detection load current value or the removal rate of the motor 27 for driving the hulling roll 9 A hulling roll 9 gap adjusting means for automatically adjusting the gap between the pair of hulling rolls 9, 9 based on the detection removal rate of the sensor, a load current value storage means for storing a detected load current value, and a predetermined load at a predetermined time. A sudden load current value rise detecting means for detecting a sudden rise of a value n (A) or more, and a gap between the hulling rolls 9 and 9 in association with the sudden load current value rise detecting means of the sudden load current value rise detecting means. A hulling roll 9 for expanding the gap between the hulling rolls 9 and 9 until the load current value before the detection of the suddenly rising load current value is reached.
With the configuration of the gap adjusting device for the hulling roll 9, the overload reference current value for gap adjustment is reduced to the load current value before the rapid load current value detection, and the gap adjusting device for the hulling roll 9 is provided. is there.

[0007]

When the paddy is supplied to the pair of hulling rolls 9, 9, the hulling is hulled, and the gap between the pair of hulling rolls 9, 9 is calculated by the dehulling ratio sensor 26 and the control reference. When the control reference removal rate is higher or lower than the calculated removal rate, an open or close command signal is output to the roll clearance adjusting motor 37 to cause the clearance between the hulling rolls 9 and 9. Is adjusted to the open side or the closed side by a predetermined amount, and if the calculated removal rate is within the range of the reference removal rate, the control command signal is not output and the gap between the hulling rolls 9 and 9 is maintained as it is. While the hulling roll gap is adjusted and controlled based on the removal rate reference, hulling work is performed, or instead of the removal rate control, the detected load current value detected by the load current sensor 29 and the control are performed. By comparing with the reference load current value, the hulling roll drive motor 27 As load current to maintain a reference load current value, gap hulling rolls 9, 9 relative to the load current value is adjusted.

During such automatic opening / closing adjustment of the hulling rolls 9, 9 gap, the detected load current value detected by the load current sensor 29 is stored in the storage device, and the detected load current value is detected. In the storage process, when the detected load current value detects a rapid increase of the predetermined load value n (A) or more in a predetermined time, the detected load current value from the arithmetic control unit 30 is detected before the detection of the suddenly increased load current value. A gap opening command signal for opening the hulling rolls 9 and 9 until the load current value is output, an overload of the motor 27 is prevented, and an overload reference current value for hulling roll 9 gap adjustment is set to this The load current value before the detection of the suddenly increased load current value is reduced and changed, and the overload reference current value is corrected to the decreasing side.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the invention shown in FIG. 1 will be described below. First, the configuration of the embodiment will be described. This hulling / sorting machine is used after hulling in hulling part 1 for hulling, sloping rice wind selecting part 2 for wind-selecting spilled rice from hulling part 1, and sloping rice wind selecting part 2. It is composed of a mixed rice sorting unit 3 and a fried grain transporting unit 4 which are of a swing sorting device type for sorting scraped rice. Then, the grain hull portion 1 is arranged in the upper front part of the machine body, and the deciduous rice wind selecting portion 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 conveyance part 4 are arrange | positioned, the mixed-rice selection part 3 is arrange | positioned behind this mixed-rice fried machine 5 and the fried-grain machine 6, and the mixed-rice selection part. 3 is a configuration in which the brown rice fried machine 7 of the fried grain transport unit 4 is arranged behind the fried rice.

The hulling section 1 includes a hull hopper 8, a hulling roll 9,
It is composed of a hulling chamber 10 and the like in which 9 is installed, and the slid rice that has been hulled by the hulling section 1 flows into a hulled rice wind selecting section 2 below. The sliding rice wind selection unit 2 includes the sliding rice wind selection box 11, the sliding rice wind selection box 11, which is obliquely installed from the rear lower portion to the upper front portion, and the polished rice Gutter 13,
It is composed of a scraped-down rice gutter 14, a suction dust collector 15, a dust barrel 16, and the like.

Next, the rocking / sorting device type mixed rice sorting unit 3 will be described. The rocking sorting plates 17, 17, ... have uneven portions for sorting, and one side in the vertical direction is a high supply side, and the other side opposite thereto is a low discharge side, and a horizontal direction orthogonal to the vertical direction. One side of high (direction orthogonal to the paper surface of FIG. 1) is the upper side, and the lower side of the opposite side is the lower side.
The oscillating selection plates 17, 17, ... Are both inclined in the vertical and horizontal directions.

The rocking sorting plates 17, 17, ... Are rocking arms 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 of the horizontal swing-down 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 is provided on the discharge side of the swing selection plate 17.
And the paddy partition plate 23 is arranged, and after the brown rice is separated by the brown rice partition plate 22 and taken out, it is taken out of the machine by the brown rice lifting machine 7, and also separated by the brown rice partition plate 22 and the paddy partition plate 23. The mixed rice that has passed through the mixed rice flow path 24 and the mixed rice fried machine 5 is circulated through the mixed rice sorting section 3 again to be re-sorted, and the paddy partitioned by the paddy partition plate 23 is the paddy flow path 25 and Paddy Grain Maker 6
After passing through, it is reduced to the hull portion 1 and hulled again.

Next, FIGS. 2 and 3 will be described. Two
Reference numeral 6 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 that has been removed by the removal section 1. The scraped rice selected by the unit 2 is sampled and supplied to the removal rate sensor 24. Reference numeral 27 denotes a main motor that drives a hulling and sorting machine, and the rotational power of the main motor 27 is transmitted to the transmission belt 28.
A pair of hulling rolls 9 and 9 are driven (in this embodiment, the main motor 27 drives the entire machine body,
The hulling rolls 9 may be configured to be driven independently. ) Is a load current sensor for detecting the load current value of the main motor 27.

The removal rate sensor 26 is input to a calculation control unit 30 including a CPU having a built-in calculation unit and a register unit, a program memory, and a calculation memory via a sample hold circuit and an A / D conversion circuit. It is a configuration. Reference numeral 31 denotes a take-off rate setting switch. The take-off rate setting switch 31 has a function of setting the take-off rate of the rice that has fallen off the hulling rolls 9 and is connected to the arithmetic and control unit 30. .
Further, a paddy supply valve opening sensor 33 that detects the opening of the paddy supply control valve 32, a supply amount setting switch 34, and an operation switch 35 are connected to the arithmetic control unit 30. Further, a roll gap adjusting motor 37 for opening and closing the roll gap adjusting means 36 of the hulling rolls 9 and 9 and a paddy shutter 38 via the output interface and the drive circuit from the arithmetic and control unit 30.
Paddy shutter opening / closing adjustment motor 39 for adjusting opening / closing of the paddy and paddy supply adjusting motor 4 for opening / closing adjustment of paddy supply adjusting valve 32.
The control command signal is output to 0.

Next, the control contents of the arithmetic control unit 30 will be described. First, the removal rate setting switch 31 is set to a predetermined scale to set a desired removal rate, and when the operation switch 35 is turned ON, the rotating parts of the hull sorting machine are driven. Then, the initial clearance setting control of the hulling rolls 9, 9, that is, the calculation control unit 3
An open command signal from 0 is sent to the roll gap adjusting motor 37 to open the roll gap adjusting means 36 to open the gap between the hulling rolls 9 for a predetermined time, and the load current sensor 2
The hulling rolls 9 and 9 in which the load current value detected by 9 does not change
When the non-contact state of No. 2 is detected, the gap between the hulling rolls 9 and 9 is narrowed. Then, when the increase in the load current value is detected and the slight contact of the hulling rolls 9 and 9 is detected, the roll gap adjusting means is kept for a predetermined time. 36 is opened and adjusted, the gap between the hulling rolls 9 is opened for a predetermined time, and the initial gap (for example, 1 mm) is set. Next, an opening command signal from the arithmetic and control unit 30 is output to the paddy supply adjusting motor 40 for a predetermined time, and the initial opening setting for opening the paddy supply adjusting valve 32 of the paddy hull 1 to a predetermined opening (for example, 10 mm) is performed. Then, the hulling work is started. Then, a control command signal based on the large / medium / small adjustment setting of the supply amount setting switch 34 is sent to the paddy supply adjusting motor 40,
The paddy supply control valve 32 is changed and adjusted to the set efficiency opening. When the hulling roll gap adjustment is performed based on the load current value, the control reference value is changed in association with the adjustment setting of the supply amount setting switch 34. Next, the hulling roll 9 gap adjustment control based on the removal rate reference is entered, and first, the light amount of the removal rate sensor 26 is adjusted,
The light emitting element is adjusted to an appropriate amount of light for discriminating between paddy and brown rice, and then the voltage signal of the grain that has passed through the removal rate sensor 26 is passed through the sample hold circuit and the A / D conversion circuit to the operation control unit. When the voltage signal is directly input to the operation control unit 30 as well as being input to 30, and the voltage signal of a predetermined number of sample particles is read, the removal rate is calculated.

Next, the control reference removal rate set by the removal rate setting switch 31 in the arithmetic control unit 30 is compared with the calculated removal rate, and the control reference removal rate is calculated from the calculated removal rate. When it is high (or when it is low), an opening (or closing) command signal is output to the roll gap adjusting motor 37, and the gap between the hulling rolls 9 is opened by a predetermined amount (or closed). If the calculated removal rate is within the range of the reference removal rate,
The control command signal is not output, and the hulling roll 9 as it is,
The hulling operation is performed while maintaining the gap of 9.

Instead of the removal rate control, the detected load current value detected by the load current sensor 29 is compared with the control reference load current value, and the hulling rolls 9 and 9 are controlled with the load current value as a reference. The gap may be adjusted. The detected load current value detected by the load current sensor 29 is stored in the storage device during the automatic gap adjustment between the hulling rolls 9 and 9 described above. Then, in the process of detecting the detected load current value, the detected load current value is equal to the predetermined load value n at a predetermined time.
(A) When the sudden rise above is detected, the arithmetic control unit 30
In connection with the detection of the rapid load current value increase, a gap opening is made to open the gap between the hulling rolls 9 and 9 until the load current value before the detection of the sudden load current value is reached. The command signal is output to prevent the overload of the main motor 27, and the arithmetic control unit 30 sets the overload reference current value for adjusting the clearance of the hulling roll 9 to the load current value before the rapid load current value detection. The overload reference current value to be decreased is corrected to the decreasing side.

Next, FIG. 5 will be described. The part of the dust collection case 41 of the suction dust collector 15 that is worn relatively well is composed of the replacement part 43, and the replacement time detection sensor 42 composed of a flat plate type touch sensor is bonded to the outer peripheral part of the replacement part 43. It is arranged to detect the replacement time of parts when the dust case 41 is worn out due to continuous use for a long period of time, the replacement time detection sensor 42 is exposed, and a grain or the like collides. Further, the grain extraction port 7a of the brown rice fried machine 7 is provided with a replacement timing detection sensor 42 composed of a wide flat plate type touch sensor on the back side of the consumable replacement part 43,
When the replacement component 43 is worn and the replacement timing detection sensor 42 is exposed, the replacement timing of the component is similarly detected.

These replacement time detection sensors 42, 42
Is a configuration in which the detection information is input to the arithmetic control unit 30 (not shown) via an input interface (not shown), and the output information from the arithmetic control unit 30 (not shown). The component replacement information is output to a display (not shown) via (not shown), and when the replacement timing detection sensors 42, 42 detect wear of the dust case 41 or the brown rice fried machine 7, Parts replacement information is displayed on a display (not shown), and a buzzer (not shown) notifies the replacement time.

Next, the operation of the embodiment will be described. When performing the hulling work, the hull is supplied to the hull hopper 8 of the hulling unit 1, and the operation switch 35 is turned on. Then, the paddy is hulled by the hulling rolls 9 and 9, the slid rice flows into the down sludge rice wind selecting section 2, and the hull having a low specific gravity passes through the suction dust collector 15 and the dust collector 16. The mixed rice discharged to the outside of the machine and having a high specific gravity is dropped and sorted by the scraped rice receiving trough 14. Next, the mixed rice is fried by the mixed rice fried machine 5, passed through the distribution gutter 20 and the distribution case 21, and is supplied to the swing selection plates 17, 17, .... The mixed rice thus supplied to the rocking sorting plates 17, 17, ... Is oscillated in a horizontal slanting vertical direction, and the size of the grain shape, the specific gravity, the friction coefficient, etc. , Small brown rice with a high specific gravity is distributed unevenly on the upside in the lateral direction, and unhulled rice with a larger and lighter specific gravity than the undeveloped rice is unevenly distributed on the downside in the lateral direction, and the undivided paddy and brown rice are in between. The mixed rice is unevenly distributed, and these grains are separated and separated by the brown rice partition plate 22 and the paddy partition plate 23.

[0022]

As described above, according to the present invention, the motor 2
Power is transmitted from 7 to the hulling rolls 9 and 9 via the conduction belt 28 to perform hulling work. During the work, the gap between the hulling rolls 9 and 9 is automatically adjusted based on the removal rate reference or the load current value reference. The hulling work is continued while being adjusted, and when an abrupt increase in the load current value is detected in such an automatic gap adjusting process of the hulling roll 9, an opening adjustment command is issued to the roll gap adjusting means. Since a signal is output and the gap between the hulling rolls 9 is opened until the load current value before the rapid increase of the load current value is reached, a problem such as a slip of the conductive belt 28 can be promptly eliminated. Along with this rapid increase in the load current value, the reference overload current value is reduced and changed to the load current value before the rapid increase, thus preventing the subsequent rapid increase in the load current value, Hulling while keeping stable hulling roll 9 gap It is possible to continue the work.

[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.

[Fig. 4] Flow chart

[Fig. 5] Cut side view

[Explanation of symbols]

 1 Rice hulling part 2 Sliding rice wind sorting part 3 Mixed rice sorting part 4 Lifting grain conveying part 5 Mixed rice grain lifting machine 6 Paddy grain lifting machine 7 Brown rice graining machine 8 Paddy hopper 9 Paddy roll 10 Paddying room 11 Sliding Falling rice selection box 12 Sliding rice wind selection path 13 Polished rice receiving gutter 14 Sliding rice receiving gutter 15 Suction dust collector 16 Dust collecting 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 Mixed rice flow path 25 Paddy flow path 26 Depletion rate sensor 27 Main motor (motor) 28 Conductive belt 29 Load current sensor 30 Calculation control unit 31 Depletion rate setting switch 32 Paddy supply control valve 33 Paddy supply control valve opening sensor 34 Supply amount setting switch 35 Operation switch 36 Roll gap adjusting means 37 Roll gap adjusting motor 38 Paddy shutter 39 Paddy shutter opening / closing adjusting motor 40 Paddy supply adjusting motor 41 Dust case 42 exchange time detection sensor 43 Replacement Parts

Claims (1)

[Claims] 1. A pair of hulling rolls 9, 9 for hulling, a main motor 27 for driving the hulling rolls 9, 9, and a pair of hullers receiving transmission of rotational power of the main motor 27. Roll 9,
In a hulling device having a conduction belt 28 for rotationally driving 9 and a hulling roll 9 gap adjusting means for opening and closing the gap between the pair of hulling rolls 9, 9, a main motor 27 for driving the hulling roll 9 is provided. Gap detection means for automatically adjusting the gap between the pair of hulling rolls 9, 9 based on the detected load current value or the removal rate detected by the removal rate sensor, and the load current value for storing the detected load current value. In connection with the storage means, the sudden load current value rise detection means for detecting a sudden rise of a predetermined load value n (A) or more in a predetermined time, and the sudden load current value rise detection of the sudden load current value rise detection means Rapid increase in the gap between the hulling rolls 9 and 9 The hulling rolls 9 and 9 which expand the hulling rolls 9 and 9 gaps until the load current value before the rapid load current value detection is reached, and the hulling roll 9 gap rapid opening adjustment output means and the hulling roll 9 gaps. Adjust the overload reference current value to Gap adjustment device for hulling roll 9 having a overload reference current value decrease correction means for reducing changes until the load current value before the current value detection.