JPH0957127A - Control device of hulling sorter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly prevent the interruption of work caused by overload while continuing automatic control operation for a relatively long time by displaying such a state that a power supply voltage sensor detects the sharp lowering from reference voltage on a display device and refusing the manual regulation on the closed side of a roll gap regulating means of a hulling roll. SOLUTION: When operation is started in such a state that an automatic/manual switch 30 is set to an automatic side, the respective rotary parts of a hulling sorter are driven. Subsequently, the gap between hulling rolls is regulated by a roll gap regulating means so as to be opened and, when the non-contact state of the hulling rolls is detected, opening regulation is stopped. At this time, when power supply voltage is lowered within a narrow range during the opening and closing control of the gap between the hulling rolls, opening regulation is stopped. Subsequently when the closing signal of the gap between the hulling rollers is outputted and the fine contact of the hulling rolls is confirmed, closing regulation is stopped. At this time when power supply voltage is lowered within a narrow range during the opening and closing control of the gap between the hulling rolls, abnormality is displayed on a display tube 49. When power supply voltage is lowered to a large extent, only the control on the side widening the gap between the hulling rolls is permitted and the manual regulation to the closing side to the roll gap control means is refused.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a control device for a hulling sorter.

[0002]

2. Description of the Related Art In a hulling device composed of a pair of hulling rolls, an automatic hulling roll automatic control system is used which controls a gap between the pair of hulling rolls on the basis of a load current value or a removal rate. Some have a gap control means.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention is intended to improve the workability when the power supply voltage is reduced in the above-mentioned automatic clearance control device for a hulling roll.

[0004]

The technical means of the present invention for solving such a technical problem is a pair of hulling rolls 3, 3 for hulling and a hulling roll 3, 3. No. 3 roll gap adjusting means and the main motor 44 for driving the hulling rolls 3, 3.
And a hulling roll automatic gap control means for opening and closing the gap between the pair of hulling rolls 3 and 3 on the basis of the load current value, and a load current sensor for detecting the load current value of the main motor 44. 32
And a power supply voltage sensor 33 for detecting the voltage of the commercial power supply,
When the power supply voltage sensor 33 detects a small decrease in the power supply voltage from the reference voltage, a small decrease in the power supply voltage is displayed on the display device, and the automatic control of the hulling roll automatic gap control means is continued. The automatic driving continuation control means at the time of decrease and the power supply voltage sensor 33 displays a large decrease of the power supply voltage on the display device when it detects a large decrease from the reference voltage, and the load of the hulling roll automatic gap control means is displayed. Only the control on the side of decreasing the current value is continued and the automatic operation continuation control means at the time of a large decrease in the power supply voltage for rejecting the manual adjustment on the closing side of the roll gap adjusting means of the hulling roll is included. The control device of the machine is configured.

[0005]

When paddy is supplied to the pair of hulling rolls 3 and the hulling work is started, the pair of hulling rolls 3 and 3 can control the roll gap based on the load current value. Starting, the roll gap is opened and closed. The load current sensor 32 detects the load current value of the main motor 44 that drives the hulling rolls 3, 3 and compares it with the control reference value so that the detected load current value becomes the control reference value. In addition, the opening / closing of the gap of the hulling roll is controlled.

During such an operation, while the power supply voltage sensor 33 detects the power supply voltage, the roll gap control based on the load current value is performed. During such control,
For example, when the roll gap control is performed with a reference power supply voltage of 200 V and a relatively small power supply voltage of up to 180 V is lowered, the display device displays, for example, every 10 seconds for 2 seconds. While displaying a power supply voltage abnormality indicating a slight decrease in power supply voltage, and alerting the operator to the decrease in power supply voltage,
The automatic operation is continued while automatically controlling the gap between the hulling rolls.

When the power supply voltage drops significantly to 170 V or less, the control for increasing the load current value of the hull roll is interrupted, and, for example, the display device is operated twice every 10 seconds. The power supply voltage has been drastically reduced, and the power supply voltage is abnormally displayed.Also, only the control on the load current value lower side in the direction of widening the clearance of the hull roll is allowed, and the roll clearance is adjusted. The operation is performed while continuing the automatic control which refuses the manual adjustment of the means to the closed side.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be described below. First, the configuration of the embodiment will be described. First, the overall configuration of a hulling and sorting machine will be described with reference to FIG. Reference numeral 1 denotes a hulling unit. The hulling unit 1 includes a hulling hopper 2, a pair of hulling rolls 3, 3, and the like. Reference numeral 4 denotes a slidable rice wind selection path, in which the slidable rice from the rice hull portion 1 is wind-selected by the sorting wind generated by the suction dust collector 5 in front, and the light rice husk is sucked in the dust collector 5, The heavy brown rice and the mixed rice of paddy discharged through the tube 6 to the outside of the machine, and the mixed rice of the heavy brown rice and the paddy 7 on the lower side
To be sorted. The mixed rice dropped and sorted into the slide-down rice receiving gutter 7 is fried by the mixed rice fried machine 8 and is supplied to the conveyance start end portion of the supply gutter 14 on the rotary selection cylinder 11 side through the mixed rice hopper 9. It is a configuration.

[0009] 10 is a sorting case, this sorting case 1
The rotary sorting cylinder 11 having a large number of pot holes formed on the inner peripheral surface thereof in 0 has a sorting start side (right side in FIG. 1) and a sorting end side (FIG. 1) so as to rotate around the horizontal axis. On the left),
It is rotatably supported by the drive rollers 12, 12, .... A supply gutter 14 supported by a supply spiral 13 and a brown rice gutter 16 supported by a brown rice helix 15 are horizontally suspended in the rotary sorting cylinder 11.

When arranging the supply gutter 14 and the brown rice gutter 16 in the rotary selection tube 11, as shown in FIG. 2, the supply gutter 14 is placed on the scraping side of the rotary selection tube 11 and the brown rice gutter. 16 is disposed on the side of the rotary selection cylinder 11 that rotates downward from above. In this supply gutter 14, the mixed rice of paddy and a part of brown rice scooped up low in the pot hole of the rotary selection cylinder 11 is dropped and sorted, and is further transferred by the supply spiral 13 to the transport end side of the supply gutter 14. Is supplied to the sorting start end side of the rotary sorting cylinder 11, and the supply gutter 14 also has a function of receiving mixed rice.

The end of the brown rice gutter 16 at the end of conveyance is the brown rice falling tube 1
7. It is connected to brown rice gutter 19 through brown rice grain plate 18. The brown rice received by the brown rice gutter 16 is the brown rice falling tube 1
7. The brown rice is passed through the brown rice grain plate 18 and dropped into the brown rice gutter 19 to be selected by air, and is further taken out from the brown rice gutter 19 via the brown rice grain cultivator 20. Rotating sorting cylinder 1
Below the sorting end side of No. 1, a paddy gutter 21 is arranged. A paddy grain hopper 22 is connected to the paddy receiving trough 21, and an upper end of the paddy grain hopper 22 is connected to the paddy reducing hopper 23 of the paddy hull 1. Then, the grain mainly composed of the sorted paddy rice that has flowed to the sorting end side of the rotary sorting cylinder 11 is the paddy receiving gutter 21.
In addition, the grain is dropped to the grain hulling machine 1, the grain-reducing hopper 23, the grain is reduced to the grain-sliding unit 1, and the grain is again grained.

Next, the configuration of the control unit will be described with reference to FIGS. FIG. 2 shows a known roll gap adjusting device for adjusting the gap between the hulling rolls 3,3. The hulling rolls 3 and 3 are a hulling roll 3 which rotates at a fixed position on the left side, and a right hulling roll 3 which is rotatably supported by a swing arm to be adjusted. It is composed of. Reference numeral 45 is a roll clearance adjusting motor. When the roll clearance adjusting motor 45 rotates in the normal or reverse direction, the roll clearance is constituted by a gear group, an adjusting screw rod, a swing arm and the like. The adjusting means 24 is configured to open and close the gap between the hulling rolls 3 and 3.

A large number of switch groups are connected to the control unit 25 having a built-in CPU, and a large number of sensor groups are connected via a signal conversion circuit 36 which is an interface. The control unit 25 is connected to a large number of actuator groups and a display device group via an output interface. Next, these connection relationships will be specifically described.

The removal rate upper switch 26, the removal rate lower switch 27, the cylinder rotation high switch 28, and the cylinder rotation low switch 2
9, an automatic / manual switch 30 for switching to automatic or manual, a switch group of a display switch 31 for switching and displaying the rotation speed of the rotation selection cylinder 11 and the detected load current value on the cylindrical rotation speed display device 50, and Load current sensor 32 for detecting the load current value of main motor 44, power supply voltage sensor 3
3, a sensor group of a power supply frequency sensor (R-T) 34, a power supply frequency sensor (S-T) 35, a grain sensor 37 for detecting the presence or absence of grains in the paddy hopper 2, a hulling roll 3,
Roll for detecting the expanded state where the roll gap of 3 is wide open
From the expansion sensor 38, the shutter sensor 39 that detects the fully closed state of the paddy supply control valve 39a, the rotation sensor 40 that detects the rotation speed of the rotary selection cylinder 11, and the potentiometer that detects the opening degree of the paddy supply control valve 39a. Valve opening sensor 4
1, a sensor group of a transistor / open collector type scattering sensor 42 for detecting the picked-up state of the grains of the rotary selection cylinder 11, and an operation / stop switch 43, the signal conversion circuit 36.
Is connected to the respective control unit 25 via.

A roll for adjusting the roll clearance between the main motor 44 for driving the hull sorting machine and the hull rolls 3, 3 from the control section 25 via the signal conversion circuit 36. Gap adjustment mode
The motor 45, a shutter opening adjustment motor 46 for adjusting the opening of the paddy supply adjusting valve 39a, a cylindrical rotation adjusting motor 47 for adjusting the rotation speed of the rotary selection cylinder 11, and a communication device 48 are provided. It is connected. Further, the control unit 25 includes a display tube 49 for displaying characters, numbers, etc., a cylindrical rotation speed display device 50 for displaying the rotation speed of the rotation selection cylinder 11, current display LEDs 51, L.
The ED display device 52 and the buzzer 53 are connected to each other.

Next, the control panel 54 shown in FIG.
Will be described. The control panel 54 includes, for example, a fluorescent display tube type display tube 49 and a cylindrical rotation speed display device 5.
0, current display LED 51, display unit for displaying the presence or absence of paddy in the paddy hopper 2, shutter open / close display unit, roll expansion display unit, LED display unit 52a for displaying the presence or absence of abnormality, whether automatic operation or manual operation LED display section 52b for displaying
LED display section 52c for displaying roll expansion, automatic / manual changeover switch 30, take-off rate lower switch 27, take-off rate upper switch 26, cylindrical rotation low switch 29 for lowering and adjusting the rotation speed of the rotary selection cylinder 11, Cylindrical rotation height switch 28 and display changeover switch 3 for increasing and adjusting the rotation speed of the rotation selection cylinder 11.
1 is provided for each.

Next, the control contents of the CPU 25 will be described. First, the automatic / manual changeover switch 30 is selected to the automatic side, and the run / stop switch 43 is operated to the run side. Then, the main motor 44 is turned on to drive the rotating parts of the paddy hull sorting machine. Next, the initial gap setting control for setting the initial gap between the hulling rolls 3 and 3 is performed. A roll gap opening command signal from the CPU 25 is output to the roll gap adjusting motor 45, the roll gap adjusting means 24 is driven to open for a predetermined time, and the hull rolls 3 and 3 are driven. When the gap is adjusted to open and the load current sensor 31 detects the non-contact state of the hulling roll in which the detected load current value does not change, the open adjustment is stopped. Then, a close command signal for the roll gap is output, the roll gap is closed and adjusted, the load current sensor 32 detects an increase in the load current value, and a slight contact between the hulling rolls 3 and 3 is confirmed. Then, the closing adjustment is stopped. Then, an opening command signal for the roll gap is output, and the roll gap adjusting motor 45 is open-controlled for a predetermined time to set and set a predetermined initial gap (for example, 1 mm).

As described above, when the adjustment setting of the initial gap is completed, the detected value of the load current sensor 32 is still continuously changing to the decreasing side, or the load current value higher than the no-load current value. When detecting, the additional open command signal is output from the control unit 25, the detection result of the load current sensor 32 does not change, or the load current value equivalent to the no-load current value is detected, When the gap between the hulling rolls 3 is in a non-contact state, the additional opening command signal is stopped and the setting of the initial gap is completed.

When the additional opening command signal is output, the load current value when the hulling roll is not in contact when the opening of the roll gap is adjusted at the beginning of the initial gap setting control, It is also possible to write and store it as a reference load current value of no load in the EEPROM 57, and to judge non-contact of the roll gap by comparison with this. When the initial clearance is set, in the case of the conventional device that does not have the additional opening adjustment process, when the paddy rolls 3 and 3 are worn, the initial clearance setting is completed in the contact state of the roll clearance. Then, the hulling work may be started, and in this case, the roll gap is closed and the hulling roll is worn early, or the brown rice has a skin-skinning phenomenon. was there. However, by performing the additional opening adjustment of the roll gap as described above,
Such a problem can be solved. Next, the shutter opening initial setting control for adjusting the initial opening of the paddy supply adjusting valve 39a is performed. An open command signal is output from the CPU 25 to the shutter opening adjustment motor 46,
Set the paddy supply control valve 39a to a predetermined valve opening (for example, 10 mm)
The initial opening is set so that the hulling work is started.

Next, a valve opening adjustment command signal for adjusting the supply amount adjustment setting position of a paddy supply adjusting lever (not shown) is output, and the paddy supply adjusting valve 39a is moved to a position corresponding to the set efficiency valve opening. Change adjusted. Next, the control shifts to the roll clearance control based on the load current value reference. Then, the detected load current value of the load current sensor 32 is sent to the control unit 25, the control reference value and the detected load current value are compared, and when the detected load current value is higher (or lower) than the control reference value, , An opening (or closing) command signal is output to the roll gap adjusting motor 45, and the hulling roll 3,
The gap 3 is adjusted to the open side (or closed side) by a predetermined amount, and the detected load current value is returned to the control reference value. Also,
If the detected load current value is within the range of the control reference value, no control command signal is issued and the hulling operation is performed while maintaining the roll gap as it is. Instead of the roll clearance control based on the load current value reference, the hull roll clearance may be controlled based on the removal rate reference. Next, in the load current value reference control, when the detected load current value exceeds the reference value by a predetermined amount (for example, 2 amperes), the control is switched to real time control and a gentle roll is performed over a predetermined time. The switching to the gap control will be described.

For example, when the manual roll clearance adjustment is switched to the automatic roll clearance adjustment, the detected load current value may exceed the breaker capacity by, for example, 2 amperes. In such a case, if the control command for opening the roll gap is output all at once in real time, the removal rate may drop too rapidly and the selection in the mixed rice selection unit may become poor.

Therefore, instead of outputting the control command in real time, the control command is issued for a predetermined time (for example, 30
Per second), the open command is issued 6 times in real time. For example, the open command is issued 6 times in 3 minutes. To lower the selection in the mixed rice selection unit. Such control switching is performed, for example, by adjusting a jumper wire. If four jumper wires are provided, switching is performed by cutting the second jumper wire.

In the roll clearance control based on the load current value, when the detected load current value is smaller than the control reference value and deviated to the over side or the under side, the open or close command output is performed in real time. Is issued and quick control is made,
In addition, when the deviation is largely deviated to the over side or the under side with respect to the reference value, the gentle control in which the opening or closing command is issued once every predetermined time may be automatically selected. Good. Next, the related control between the amount of grains to be sorted in the rotary sorting cylinder 11 and the paddy supply control valve 39a of the paddy hull 1 will be described based on the control flow in FIG.

A well-known layer thickness detection sensor (not shown) for detecting the grain layer thickness is provided in the rotary selection cylinder 11, and is related to the grain increase side or grain decrease side detection of the layer thickness detection sensor. Thus, the paddy supply control valve 39a is controlled to be decreased or increased. In the meantime, the load state of the hulling roll is detected by the load current sensor 32, and the layer thickness detecting sensor detects the decrease of the layer thickness to detect the paddy supply control valve 39a.
Is not adjusted in real time, the detected load current value of the load current sensor 32 is a predetermined value (for example, 85% of the rated current value, or the opening degree of the paddy supply control valve. The paddy supply adjusting valve 39a is opened and adjusted by decreasing from the predetermined value determined by the removal rate setting value) and then elapse of a predetermined time (for example, 30 seconds).

When the adjustment reduces the detected load current value,
When the paddy supply control valve 39a is opened and controlled in real time,
Open adjustment of the paddy supply control valve 39a, increase of paddy amount in paddy roll, roll gap opening adjustment based on load current value reference, increase of grain amount in rotary sorting cylinder 11, layer thickness detection sensor A series of adjustments of grain amount increase detection, close adjustment of the paddy supply control valve 39a, and roll gap close adjustment based on the load current value reference may be repeated, and the control is not stable. There has been a problem that the sorting accuracy is lowered.

However, by providing the predetermined time, it is possible to stabilize the amount of grains in the rotary selection cylinder 11, and in relation to this, the roll clearance control is also stabilized, and the series of adjustments are repeated. This will reduce the number of cases, and stable hull sorting work will be possible. Next, the control at the time of changing the power supply voltage at the time of the roll gap control based on the load current value will be described.

During the opening / closing control of the roll gap, the power supply voltage sensor 33 detects the power supply voltage.
If the power supply voltage drops within a relatively narrow range of up to 180 V when the roll gap is controlled with a reference power supply voltage of 0 V, the display device (display tube 49 or cylindrical rotation speed display device 50). In addition, for example, every 10 seconds, an abnormal display of a small drop in the power supply voltage for 2 seconds is displayed, and while prompting the operator to notice the drop in the power supply voltage, the removal rate upper switch 26
It also calls attention not to push too much, and it is possible to prevent work interruption due to overload while continuing automatic control of the roll clearance.

When the power supply voltage is drastically reduced to a range of 170 V or less, the control on the closing adjustment side (load current value increasing side) of the hulling roll is interrupted, and, for example, the display device. In addition, the power supply voltage abnormality is displayed twice in 10 seconds, and the power supply voltage is significantly reduced. Also, in parallel with this, only control on the side of widening the gap of the hulling roll (side of decreasing load current value) is allowed,
The operation is performed while continuing the automatic control while rejecting the manual adjustment of the roll clearance adjusting means to the closing side. Note that FIG.
Indicates a control flow.

Therefore, the operator can know that the power supply voltage has dropped to 170 volts, and the hull selection work can be performed smoothly while preventing the work from being interrupted due to overload. Next, the operation of FIG. 1 will be described. The paddy placed in the paddy hopper 2 is supplied to the pair of paddy rolls 3 and 3 to be padded. The rice that has been hulled is
The light rice husks are supplied to the downdraft rice selection path 4 below and are wind-selected, and the light rice husks are discharged out of the machine through the suction dust discharger 5 and the dust discharge tube 6, and the mixed rice of heavy brown rice and rice is Lower sliding rice gutter 7
To be sorted. Next, the mixed rice dropped and selected on the scraped rice receiving trough 7 is fried by the mixed rice lifting machine 8 and supplied to the mixed rice hopper 9, and further, the inside of the supply trough 14 is conveyed from the conveyance start end to the conveyance end. It is conveyed toward the section and is supplied to the sorting start end side of the rotary sorting cylinder 11.

The mixed rice fed to the starting side of the rotary sorting cylinder 11 is picked up while being inserted into the pot hole on the inner peripheral surface and scooped up, and the small brown rice is scooped up high and the brown rice gutter 16
The large-sized paddy and a part of the brown rice are scooped up low and dropped into the supply gutter 14. In this way, the brown rice selected by the brown rice gutter 16 is the brown rice gutter 16
The inside is conveyed by the brown rice spiral 15 to the sorting end side of the rotary sorting cylinder 11, and then it is dropped through the brown rice falling cylinder 17 and the brown rice grain plate 18 into the brown rice receiving trough 19 while being wind-selected, and further the brown rice is fried. It is taken out of the machine via the grain machine 20.

The mixed rice dropped in the supply gutter 14 is conveyed by the supply spiral 13 and supplied to the sorting start end side of the rotary sorting cylinder 11 for re-sorting, and the inside of the rotary sorting cylinder 11 is sorted to the sorting end side. The flowed and sorted grains fall into the paddy receiving gutter 21, and are further reduced to the paddy rolls 3 and 3 via the paddy grain elevator 22 and the paddy reducing hopper 23, and the paddy is rolled again. It is removed.

[0032]

As described above, according to the present invention, as described above, it is possible to operate the power supply voltage in the small and large drop states.
It is possible to perform work while the user knows it, and to smoothly prevent the interruption of work due to overload and smooth the hulling and sorting work while continuing the automatic control operation for a relatively long time.

[Brief description of drawings]

FIG. 1 is a cut side view and a cut back view of a hulling sorter.

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

FIG. 3 is a block diagram.

FIG. 4 is a block diagram.

[Figure 5] Front view of the panel

FIG. 6 is a flowchart.

FIG. 7 is a flowchart.

[Explanation of symbols]

 1 Hulling part 2 Hulling hopper 3 Hulling roll 4 Sliding rice wind selection part 5 Suction dust collector 6 Dust collector 7 Sliding rice trough 8 Mixed rice hopper 9 Mixed rice hopper 10 Sorting case 11 Rotating sorting cylinder 12 Drive roller 13 Supply spiral 14 Supply gutter 15 Brown rice spiral 16 Brown rice gutter 17 Brown rice falling tube 18 Brown rice grain board 19 Brown rice receiving gutter 20 Brown rice grain grazing machine 21 Paddy receiving gutter 22 Paddy grain grinder 23 Reduction hopper 24 Roll gap adjusting means 25 Control unit 26 Depth rate upper switch 27 Depth rate lower switch 28 Cylindrical rotation high switch 29 Cylindrical rotation low switch 30 Automatic / manual changeover switch 31 Display changeover switch 32 Load current sensor 33 Power supply Voltage sensor 34 Power frequency sensor (RT) 35 Power frequency sensor (ST) 36 Signal conversion circuit 37 Glen sensor 38 Roll expansion sensor 39 Shatter sensor 9a Paddy supply adjusting valve 40 Rotation sensor 41 Valve opening sensor 42 Scattering sensor 43 Run / stop switch 44 Main motor 45 Roll clearance adjusting motor 46 Shatter opening adjusting motor 47 Cylindrical rotation adjusting motor 48 Communication Equipment 49 Display Tube 50 Cylindrical Rotational Speed Display Device 51 Current Display LED 52 LED Display Device 53 Buzzer 54 Control Panel 57 EEPROM

Continuation of the front page (72) Inventor Shinji Ninomiya No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. A pair of hulling rolls 3, 3 for hulling.
A roll gap adjusting means for the hull rolls 3, 3, a main motor 44 for driving the hull rolls 3, 3, and a pair of hull rolls.
The hulling roll automatic gap control means for opening and closing the gap between the rollers 3 and 3 on the basis of the load current value, the load current sensor 32 for detecting the load current value of the main motor 44, and the commercial power supply voltage Power supply voltage sensor 33 for detecting, and the power supply voltage sensor 3
3 displays a small decrease in the power supply voltage on the display device when it detects a small decrease in the reference voltage, and continues the automatic control of the hulling roll automatic gap control means. When the continuous control means and the power supply voltage sensor 33 detect a large decrease from the reference voltage, the display device displays a large decrease in the power supply voltage and the load current value decreasing side of the hulling roll automatic gap control means. Control device for a hull sorting machine, comprising: automatic operation continuation control means at the time of a significant decrease in power supply voltage, which controls only the above-mentioned control and rejects the manual adjustment of the roll gap adjusting means of the hulling roll on the closing side. .