JPH08323225A - Roll gap control device of hulling sorter - Google Patents

Abstract

PURPOSE: To prevent the lowering of the dehulling rate of hulling work to stabilize the dehulling rate by accelerating the closing side control of a roll gap as compared with the opening side control thereof when the load current value of the main motor driving hulling rolls is detected and a control reference load current value and the detected load current value are compared to control the roll gap. CONSTITUTION: When operation is started, the gap between hulling rolls 3, 3 is controlled so as to be reduced by a roll gap control motor 45. When a load current sensor detects the increase of a current value and the slight contact of the rolls 3, 3 is confirmed, the open control of the gap between the rolls is performed by the motor 45. Subsequently, hulling work is started but, at this time, the detected load current value of the sensor is compared with a control reference load current value and, when the detected load current value is higher, the number of rotations of the motor 45 is altered low and the gap between the rolls 3 is controlled to an open side by the slow number of rotations of the motor 45. When the detected load current value is lower, the number of rotations of the motor 45 is altered high and the gap is rapidly controlled so as to be closed by the fast number of rotations of the motor to perform the rapid return to the control reference load current value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a clearance adjusting device for a hulling roll.

[0002]

2. Description of the Related Art In a hulling apparatus composed of a pair of hulling rolls, a hulling roll automatic system for controlling the pair of hulling roll gaps on the basis of a load current value or a depletion rate is used. Some have a gap control means.

[0003]

In the conventional device, when the roll gap of the hulling roll is opened and closed according to the load current value or the like, the open adjustment and the close adjustment are adjusted at the same speed. Therefore, the closing adjustment operation tends to be delayed due to the need to perform closing adjustment against the grain pressure during hulling in the gap of the hulling roll, and control is performed at a rate lower than the standard removal rate. However, there is a problem in that it is difficult to adjust the removal rate as intended.

Therefore, the present invention is intended to solve such a problem.

[0005]

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. The main motor 44 for driving the motor 3, the load current sensor 32 for detecting the load current value of the main motor 44, and the gap between the pair of hulling rolls 3, 3 are set as the load current value reference or removal rate. Roll gap adjusting means 24 for opening / closing adjustment in the order of reference values, and the roll gap adjusting means 24
Of the roll gap adjusting motor 45 for adjusting the roll gap to the open side or the close side, and the rotation speed of the roll gap adjusting motor 45 when compared with the rotation at the time of open adjustment. The number of rotations of the roll clearance adjusting motor for changing the number of rotations is increased, and the roll clearance adjusting device of the paddy sorting machine is constituted.

[0006]

When the roll gap control is performed based on the load current value reference, the load current value of the load current sensor 32 is detected and compared with the control reference load current value. When the detected load current value is high, the roll gap value is detected. The rotation speed of the adjusting motor 45 is changed to a lower rotation speed than that at the time of closing adjustment, and the roll gap adjusting motor 4
The slow rotation of 5 adjusts the gap between the hulling rolls 3 and 3 to the open side, and when the detected load current value is lower than the control reference load current value, the rotation speed of the roll gap adjusting motor 45 is increased. By changing the rotation speed to a high value, the gap between the hulling rolls 3 is quickly closed by the rapid rotation of the roll gap adjusting motor 45, and the detected load current value quickly returns to the control reference load current value.

[0007]

Embodiments 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 is a hulling portion, and this hulling portion 1 is composed of a paddy hopper 2, a pair of hulling rolls 3, 3. Reference numeral 4 is a sludge removal unit, in which the sludge 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 by the suction dust collector 5, dust removal. 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 rice 7 below
Be dropped and 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.

Reference numeral 10 is a sorting case, and 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 on which a supply helix 13 is supported and a brown rice gutter 16 on which a brown rice helix 15 is supported are horizontally installed in the rotary selection cylinder 11.

When arranging the supply gutter 14 and the brown rice gutter 16 in the rotary selection cylinder 11, as shown in FIG. 2, the supply gutter 14 is placed on the scraping side of the rotary selection cylinder 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 conveying 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 transportation 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.

FIG. 2 shows a known roll gap adjusting device for adjusting the gap between the hulling rolls 3 and 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. When the roll clearance adjusting motor rotates normally or reversely, the roll clearance adjusting means composed of a gear group, an adjusting screw rod, a swing arm, etc. The gap is opened and closed.

The control unit 25 having a built-in CPU includes an inverter 25a (a main conversion circuit unit for converting an alternating current into a direct current and a reverse conversion device for converting a direct current into an alternating current, a forward / reverse conversion device unit). It is composed of the control circuit part connected to. The CP of the inverter
The U and the CPU of the control unit may be shared to form a single unit.

A large number of switch groups are connected to the control section 25, and a large number of sensor groups are connected via a signal conversion circuit 36 which is an interface. To 25, a large number of actuator groups and a display device group are connected 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, automatic / manual switch 3 to switch to automatic or manual
0, a load of detecting the load current value of the main motor 44, and a switch group of the display changeover 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. Current sensor 32, power supply voltage sensor 33,
A power supply frequency sensor (R-T) 34, a sensor group of 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, and a hulling roll 3, 3
, A roll deployment sensor 38 for detecting a deployment state in which the roll gap is widely opened, a shutter sensor 39 for detecting a fully closed state of the paddy supply control valve 39a, a rotation sensor 40 for detecting the number of rotations of the rotary selection cylinder 11, A valve opening sensor 41 comprising a potentiometer for detecting the opening of the paddy supply control valve 39a,
A sensor group of a transistor-open collector type scattering sensor 42 for detecting the picked-up state of the grain in the rotary selection cylinder 11,
The run / stop switch 43 is connected to each of the control units 25 via the signal conversion circuit 36.

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 52c for displaying roll expansion, automatic / manual switch 30, take-off rate lower switch 27, take-off rate upper switch 26, cylindrical rotation low switch 29 for lowering and adjusting the number of rotations of the rotary selection cylinder 11, rotation Cylindrical rotation height switch 28 and display changeover switch 31 for increasing and adjusting the rotation speed of the selection cylinder 11.
However, it is provided for each husband and wife.

Next, the control contents of the CPU 25 will be described. First, the automatic / manual switch 30 is selected on the automatic side, and the run / stop switch 43 is operated on the run side. Then, the main motor 44 is turned on to drive the rotating parts of the paddy hull sorting machine. Next, initial gap setting control for setting the initial gap of the hulling rolls 3, 3 shown in the flow chart of FIG. 6 is performed. CPU
An instruction signal for opening the roll gap from 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. 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, and the control reference load current value and the detected load current value are compared. Then, when the detected load current value is higher than the control reference load current value, the frequency of the roll clearance adjusting motor 45 is changed by the control unit of the inverter 25a to change the reference rotation speed from the predetermined rotation speed. Is changed to a low rotation speed (also at a rotation speed lower than that at the time of closing adjustment with the reference rotation speed kept unchanged), and then an opening command signal is output from the control unit 25 to the roll gap adjusting motor 45, so that the paddy Slide roll 3,
The gap 3 is slowly adjusted to the open side by a predetermined amount, and returns to the control reference load current value later.

If the detected load current value is lower than the control reference load current value by comparison, the frequency of the roll clearance adjusting motor 45 is changed by the control unit of the inverter 25a to change the rotation speed. Is added to the reference rotation speed or a predetermined rotation speed to the reference rotation speed, and is changed to a higher rotation side than when the opening is adjusted,
Then, a close command signal is output to the roll gap adjusting motor 45, the gap between the hulling rolls 3, 3 is quickly adjusted to the close side by a predetermined amount, and the control reference load current value is quickly returned. If the detected load current value is within the control reference load current value range,
No control command signal is issued, and hulling work is performed while maintaining the roll gap as it is.

In the conventional apparatus, the opening / closing adjustment is adjusted at the same speed when opening / closing the roll gap of the hulling roll based on the load current value, so that the closing adjustment operation tends to be delayed. However, there is a problem that the control tends to be performed at a lower rate than the standard removal rate, and it is difficult to adjust the removal rate to the intended removal rate. However, with the above configuration, by making the closing adjustment side of the roll gap faster and slowing the opening adjustment side,
The control on the side of increasing the removal rate is performed promptly, and the hulling work can be performed with a stable removal rate while preventing the tendency of the removal rate to decrease.

Instead of the roll clearance adjustment control based on the load current value, the clearance control of the hulling roll based on the removal rate may be performed. Next, FIG. 7 will be described.
The input side of the inverter 25a is connected to, for example, a single-phase 200V commercial power source, and the three-phase 200V power source is connected to the breaker 58 from the output side of the inverter 25a.
It is configured to be sent to the main motor 44 via the. Also,
The inverter 25a has a configuration in which the inversely converted current values of the two-phase power source are detected by CTs (current transformers) 59, 59. Further, a single-phase commercial power source on the input side and a three-phase power source on the output side are independently connected to a control section 25 for controlling each adjusting section of the paddy hull sorting machine via an input interface. Has been done.

Then, the switch portion of the breaker 58 is turned off.
If it is N, the commercial power source of single-phase 200 V is applied to the inverter 2.
5a, via the breaker 58, the flow is started to the main motor 44. Then, the current converted by the inverse converter of the inverter 25a is detected by the CTs 59, 59, and the inverter 59a detects the current.
It is input to the control unit of the inverter 25a and the inverter 25a is activated.

With this structure, the start / stop switch of the inverter 25a of the conventional apparatus can be omitted, the cost can be reduced, the number of parts can be reduced, and the reliability can be improved. Next, FIG. 8 will be described. A storage case 60 that can be freely moved in and out is provided on the upper rear side of the slide-down rice wind selection unit 4 of the paddy sorting machine.
The control unit 25 having the built-in controller 25a is housed therein.
Then, the storage case 60 is moved in and out, and the inverter 25
Check a and the control unit 25.

Next, FIG. 9 will be described. A storage case 60 is hung and supported below the rear side of the selection case 10 of the hulling and sorting machine, and the storage case 60 is provided with an inversion container.
The control unit 25 having the built-in controller 25a is housed therein.
Thus, the left and right side surfaces of the storage case 60 can be opened and closed, the inverter 25a and the control section 25 can be inspected, and the maintenance becomes easy.

Next, FIG. 10 will be described. The rear side of the control panel 54 of the paddy hull sorting machine has an upper opening / closing plate 62.
And a lower opening / closing plate 63 are provided so as to be openable / closable, the control part 25 is supported by the upper opening / closing plate 62, and the inverter 25a is supported by the lower opening / closing plate 63. 25a is connected to each other by a connecting line. Therefore, it is possible to facilitate mutual inspection of the control unit 25 and the inverter 25a.

Next, the operation of FIGS. 1 and 2 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 lower slide-down rice wind selecting section 4 and are air-selected, and the light rice husks are discharged out of the machine through the suction dust discharger 5 and the dust discharge cylinder 6, and the mixed rice of heavy brown rice and paddy is Lower sliding rice gutter 7
Be dropped and 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 into 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.

The hull selection is performed in this manner. When the roll gap control is performed based on the load current value reference, the load current value detected by the load current sensor 32 is compared with the control reference load current value and detected. When the load current value is high,
The frequency of the roll clearance adjusting motor 45 is changed to a low rotation speed, the clearance between the hulling rolls 3 is adjusted to the open side by a predetermined amount, and the detected load current value is the control reference. When the load current value is lower than the load current value, the frequency of the roll gap adjusting motor 45 is changed to the high rotation side, and the gap between the hulling rolls 3 is quickly adjusted to the close side by a predetermined amount. Hulling work is performed while quickly returning to the load current value.

[0031]

As described above, according to the present invention, since the closing adjustment side of the roll gap can be made faster than the adjustment of the opening side, the side on which the removal rate is increased can be promptly controlled to remove the removal rate. It is possible to carry out hulling work with a stable removal rate while preventing the tendency of the rate decrease.

[Brief description of drawings]

FIG. 1 is a cut side view and a cut rear view of a paddy sorting machine.

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 Flow chart

FIG. 7 is a block diagram.

FIG. 8 is a side view and a rear view.

FIG. 9 is a side view and a rear view.

FIG. 10 is a front view and a side view.

[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 gutter 8 Mixed rice grain 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 clearance adjusting means 25 Control section 25a Inverter 26 Depth rate upper switch 27 Depth rate lower switch 28 Cylindrical rotation high switch 29 Cylindrical rotation low switch 30 Automatic / manual switch 31 Display change switch 32 Load current Sensor 33 Power supply voltage sensor 34 Power supply frequency sensor (R-T) 35 Power supply frequency sensor (S-T) 36 Signal conversion circuit 37 Glen sensor 38 Roll expansion sensor 39 Series Yatta sensor 39a Paddy supply adjusting valve 40 Rotation sensor 41 Valve opening sensor 42 Scattering sensor 43 Run / stop switch 44 Main motor 45 Roll gap adjusting motor 46 Shatter opening adjusting motor 47 Cylindrical rotation adjusting motor 48 Communication equipment 49 Display tube 50 Cylindrical rotation speed display device 51 Current display LED 52 LED display device 53 Buzzer 54 Control panel 57 EEPROM 58 Breaker 59 CT 60 Storage case 61 Upper opening / closing plate 62 Lower opening / closing plate

Continuation of front page (72) Inventor Takeharu Seike 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture Izeki Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] 1. A pair of hulling rolls 3, 3 for hulling.
, A main motor 44 for driving the hulling rolls 3, 3, and a load current sensor 32 for detecting a load current value of the main motor 44.
And a roll gap adjusting means 24 for opening and closing the gap between the pair of hulling rolls 3 and 3 in the order of the load current value or the removal rate reference value, and the roll gap adjusting means 24. A roll clearance adjusting motor 45 for adjusting the clearance to the open side or the closed side,
A roll for changing the number of rotations of the roll clearance adjusting motor 45 by increasing the number of rotations in the closing adjustment as compared with the rotation in the opening adjustment.
A roll gap adjusting device for a hull sorting machine, comprising: a rotation speed changing means of the roll gap adjusting motor.