JP3845919B2 - Roller clearance control device for hulling roll - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a roll clearance control device for a hulling roll.
[0002]
[Prior art]
The load current value of the motor that drives the hulling roll is detected, the detected load current value is compared with the control reference value, and the opening and closing of the roll gap between the pair of hulling rolls is controlled. A roll clearance automatic control device that keeps the detected load current value of the motor within the range of the control reference value and keeps a predetermined removal rate is known.
[0003]
In a rice hull sorter that uses a pair of rice hull rolls to separate and sort mixed rice using a rocking sorter, the rice bran supply is related to the amount of grain in the mixed rice hopper of the rocking sorter. The control valve is adjusted to decrease or increase, and the on / off operation of the clutch of the swing sorting device and the grain selected on the swing side of the swing sorting plate are switched to the in-machine circulation switching state or the out-of-machine take-off switching state. A rice hull sorter having a rocking sorting grain switching means for switching is known.
[0004]
[Problems to be solved by the invention]
A grain selected on the rocking side of the rocking sorter plate during the hulling sorter operating the roll gap automatic control device in a hulling sorter having a hulling roll and a rocking sorter. Is switched to the in-machine circulation switching state or the out-of-machine extraction switching state, the grain flow in the machine changes, and the amount of grain supplied to the hulling roll changes. In spite of such a change state, if the roll gap control is continued, the control on the opposite side to the subsequent change direction of the roll gap may be performed, and the roll gap control is not stable. There was a drawback. Thus, the present invention is intended to solve such problems.
[0005]
[Means for solving problems]
The technical means of the present invention for solving such a technical problem is that a pair of hulling rolls 7 and 7 that hull the hull supplied from the hull hopper 6 and hulling by the hulling rolls 7 and 7. A slashed rice wind selection unit 2 for wind-selecting the smashed rice, and a swaying sorting apparatus 3 including a swaying sorting plate 15 for separating and sorting the mixed rice wind-selected by the smashed rice wind selection unit 2; Oscillating grain switching means for switching the grain separated and selected on the oscillating side by the oscillating sorting plate 15 to the in-machine circulation state or the out-of-machine state, and the oscillating drive of the oscillating sorting plate 15 is turned on and off. A swinging clutch, an operating lever 31 for operating the swinging grain switching means and the swinging clutch, and a grain for detecting that the operating lever 31 has been operated to a position where the grain is taken out of the machine. A take-out sensor 34, a rice bran supply adjustment valve 33 that adjusts the grain supply amount to the hulling rolls 7, 7, A valve opening degree sensor 42 for detecting the opening degree of the recording supply adjusting valve 33, a roll gap adjusting means for adjusting the roll gap of the hulling rolls 7 and 7, and a hull sorter are driven. A main motor 35, a load current sensor for detecting the load current value of the main motor 35, and a roll for automatically adjusting the roll clearance of the hulling rollers 7, 7 on the basis of the load current value. An automatic gap control means is provided, and the mixed rice wind-selected by the sliding rice wind-selecting unit 2 is supplied to the oscillating sorting plate 15 through the mixed rice hopper 24, the distribution supply basket 16 and the distribution case 17. the mixed rice hopper 24 and the paddy rice supply regulation valve 33 is interlockingly connected through a link mechanism, grain to hulling rolls 7,7 in conjunction with the vertical movement by the grains increase and decrease of mixing rice hopper 24 a structure for opening and closing regulating paddy supply regulation valve 33 as a particle supply amount is increased or decreased, the swing grain switching means In the internal circulation switching state, the roll gap control of the roll gap automatic control means is stopped, and the grain take-out sensor 34 indicates that the operation lever 31 has been switched to the position of the outside take-out state. When detected, a roll gap control device for the hulling roll is characterized in that the roll gap control of the roll gap automatic control means is started after a predetermined time.
[0006]
[Action]
[0007]
When the rice hull sorting operation is performed in this way, when the grains that have been hulled by the hulling rolls 7 and 7 and separated and sorted by the rocking sorting plate 15 are in the in-machine circulation state, the load current The roll gap automatic control means based on the value criterion is stopped, the grain separated and sorted on the rocking side of the swing sorting plate 15 is in a stable state of selection, and the operation lever 31 is in the state of taking out the grain from the machine. When the grain take-out sensor 34 detects it by operating the position, control by the roll gap automatic control means is started after a predetermined time, and the detected load current value of the load current detection sensor is compared with the control reference value. If the detected load current value is higher (or lower) than the control reference value, the roll gap adjustment motor 44 is adjusted to the open side (or closed side), and the detected load current value is returned to the control reference value. And set the roll gap as the reference gap. Lifting and continues hulling while maintaining a predetermined husking rate.
[0008]
【The invention's effect】
In the present invention, as described above, when the grains distributed on the rocking side of the swing sorting plate 15 are circulating in the machine, the roll clearance control based on the load current value reference is stopped, and the internal circulation is removed from the machine. Since the roll gap control is started after a predetermined time has elapsed after switching and the working state is stabilized, the roll gap control of the hulling rolls 7 and 7 can be stabilized. That is, in the in-machine circulation state, the grain taken out from the swaying side of the swing sorting plate 15 is circulated in the machine and supplied to the mixed rice hopper 24, and the grain amount of the mixed rice hopper 24 is increased. Thus, the opening degree of the hull supply control valve 33 of the hulling rolls 7 and 7 is adjusted to be closed. In this state, the grain supply amount to the hulling rolls 7 and 7 is reduced unlike the sorting stable state during taking out of the machine, so that the detected load current value is reduced, and the detected load current value is reduced based on this detected load current value. -When the roll gap control is executed, the roll gap is adjusted to be abnormally narrow. Then, when the brown rice selected by switching to the out-of-machine removal state is taken out of the machine, the amount of grain in the mixed rice hopper 24 is reduced, and the straw supply control valve 33 is adjusted to the open side, and the straw rolls 7 and 7 are moved to. When the grain supply amount increases, it takes a long time to return to the roll gap in the stable state of selection, resulting in a problem that the control is not stable. However, by adopting the above-described configuration, it is possible to eliminate such problems and to stabilize the roll gap control.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention shown in the drawings will be described below. First, based on FIGS. 1-4, the whole structure of a hulling sorter is demonstrated. The hulling sorter is a hulling part 1 that performs hulling, mixing after wind selection in a hulling rice wind selecting part 2 and a hulling rice wind selecting part 2 It is comprised by the rocking | swiveling sorter 3 which isolate | separates and sorts the rice 3, the mixed rice masher 4, the brown rice masher 5, etc. FIG.
[0010]
The hulling portion 1 is composed of a hulling hopper 6 on the upper side, a hulling chamber 8 in which hulling rolls 7 and 7 are installed, and the like. The sliding rice wind selection unit 2 includes a sliding rice wind selection box 9, a sliding rice wind selection path 10, a rice cake receiving box 11, a sliding rice receiving box 12, a suction fan 13, a dust discharge cylinder 14, and the like. Yes. Next, the swing sorting device 3 will be described.
[0011]
In the multistage swing sorting plates 15, 15,..., Sorting irregularities are formed on the plate surface, with one side in the vertical direction being a high supply side, the other side being a low discharge side, and one side in the horizontal direction being The swing sorting plate 15 is tilted both vertically and horizontally with the high swing side and the opposite side as the low swing side, and the swing sorting plates 15, 15,... The apparatus is configured to be reciprocally rocked in a slanting vertical direction in the horizontal direction.
[0012]
A supply port is formed on the supply side of the swing sorting plates 15, 15..., And mixed rice is supplied from the supply port via the mixed rice hopper 24, the distribution supply basket 16 and the distribution case 17. is there. The supplied mixed rice has a grain shape, large and small specific gravity, and small and large frictional coefficient. Rice bran is distributed while being distributed on the underside, and mixed rice that is not separated in the middle is distributed and sorted. These selected grains are separated by a brown rice partition plate 18 and a straw partition plate 19 provided on the discharge side of the swing sorting plate 15 and are taken out.
[0013]
The extracted brown rice is taken out of the machine through the brown rice take-out grinder 20, the brown rice flow path 21, and the brown rice cerealing machine 5, and the mixed rice is taken out from the machine. It is supplied to the swing sorting plates 15, 15,... Through the basket 12, the mixed rice cerealing machine 4, the mixed rice hopper 24, the distribution supply basket 16, and the distribution case 17, and reselected. In addition, the rice cake is configured such that the rice cake is returned to the rice huller 1 through the rice cake extracting rice cake 25, the rice cake passage 26, and the rice hulling machine 27, and the rice cake is re-cooked.
[0014]
Although the drawings are omitted, the mixed rice hopper 24 and the rice bran supply control valve 33 of the hulling portion 1 are interlocked and connected via an interlocking member such as a link, and the mixed rice hopper 24 is lowered by increasing or decreasing the grain amount. When it moves or moves upward, the straw supply control valve 33 is relatedly adjusted to the decrease side or the increase side, and the grain amount of the mixed rice hopper 24 is optimized. Next, the operation of the hulling sorter will be described.
[0015]
When carrying out the hulling operation, the hull is supplied to the hull hopper 6 of the hulling unit 1 to drive the rotating parts of the hulling sorter. Then, the straw is supplied from the straw hopper 6 to the straw rolls 7 and 7 and is crushed, the crushed rice is wind-selected in the crushed rice wind selection path 10 below, and the light rice husk is the suction fan 13 and the dust discharge cylinder. 14 is discharged to the outside of the machine, and the relatively light rice cake is dropped and selected in the rice cake receiving bowl 11, and the mixed rice of heavy brown rice and rice cake is dropped and selected in the sliding rice bowl 12.
[0016]
Then, the mixed rice thus selected is supplied to the swinging sorting plates 15, 15,... Via the mixed rice masher 4, the mixed rice hopper 24, the distribution supply basket 16 and the distribution case 17. When the supplied mixed rice is oscillated back and forth in a slanting direction up and down in the horizontal direction, the brown rice with a small and heavy specific gravity is related to the size of the grain shape, the specific gravity, the friction coefficient, etc. The rice cake is distributed in a drifting manner on the swaying side, and larger and lighter in specific gravity than the brown rice, is distributed on the swaying side, and mixed rice that is not separated is distributed and sorted in the middle.
[0017]
The grains flowing down from the discharge side of the swing sorting plates 15, 15,... Are partitioned by the brown rice partition plate 18 and the straw partition plate 19. The unpolished rice divided by the unpolished rice partition plate 18 is taken out of the machine through the unpolished rice removal basket 20, the unpolished rice flow path 21 and the unpolished rice cerealing machine 5, and mixed by the unpolished rice partition plate 18 and the unpolished rice partition plate 19. The rice is supplied to the rocking sorting plate 15 through the mixed rice extraction basket 22, the mixed rice flow path 23, the mixed rice cerealing machine 4, the mixed rice hopper 24, the distribution supply basket 16 and the distribution case 17, and re-sorted. In addition, the rice cake partitioned by the rice cake partition plate 19 is returned to the rice bran portion 1 through the rice cake take-out rice cake 25, the rice cake flow channel 26, and the rice milling machine 27, and is again rice caked.
[0018]
Note that the grains that have been harvested by the straw mill 27 are returned to the hulling rolls 7 and 7 via the reduction hopper 6 a of the straw hopper 6. The upper surface of the reducing hopper 6a and the flat portion 28 are flush with each other.
Next, FIGS. 5 to 8 will be described.
[0019]
First, the configuration of the operation lever will be described. A deformed U-shaped operation groove 32 is formed on the flat surface portion 28 of the hopper 6 on the side of the swing sorting device 3. The groove operating lever 31 can be moved along the operation groove 32. When the left groove is operated, the soot supply control valve 33 is operated, and when the right groove is moved, the swing sorting plate 15 is swung. It is the structure which switches the grain taken out from the upper side to an in-machine circulation state or an out-of-machine removal state.
[0020]
Thus, when the operation lever 31 is in the position (1), the straw supply adjustment valve 33 is closed, and in the position (2), the straw supply adjustment valve 33 is opened, and the oscillating selected grains are circulated in the machine. At the position (3), the swing clutch (not shown) is operated to engage the clutch while the swing selected grain is switched to the in-machine circulation state. Further, when operated to the position (4), the swinging clutch is engaged and the swinging selected grain is switched to the out-of-machine removal state. When the operation lever 31 is operated to the position (4), the grain takeout sensor 34 is turned on.
[0021]
As shown in FIG. 7, in a configuration in which three-phase commercial power is supplied to a control unit 36 having a main motor 35 and a microcomputer, when the operation switch 36a is turned on, electromagnetic switching is performed via a relay. When the device 37 is closed and the stop switch 38 is turned off, the electromagnetic switch 37 is opened. For the R phase, S phase, and T phase of the three-phase commercial power supply, the load current value is detected by the R phase load current sensor 39, the S phase load current sensor 40, and the T phase load current sensor 41, respectively.
[0022]
Further, the control unit 36 is configured to receive detection information from the valve opening sensor 42 of the straw supply control valve 33, the grain sensor 43 that detects the presence or absence of grain in the straw hopper 6, and the grain extraction sensor 34. Yes, a roll clearance adjustment motor 44 is connected from the control unit 36 via a drive circuit. Next, the hull sorting operation and the control contents of the control unit 36 will be described with reference to FIG.
[0023]
First , select the automatic / manual switch (not shown) to the automatic side, set the removal rate setting switch (not shown) to high or low, set the efficiency setting switch (not shown) to high or low, and run The switch 36a is operated to the driving side. Then, the main motor 35 is driven, and the rotating parts of the hull sorter are driven. Then, first, initial gap setting control for setting the initial gap between the hulling rolls 7 and 7 is performed. That is, when the roll load is adjusted and the detected load current values of the R-phase, S-phase, and T-phase load current sensors 39, 40, 41 no longer change, the hulling rolls 7, 7 are not in contact with each other. Judge the condition and stop the opening adjustment. Next, the roll gap is adjusted to close, and when the load current sensors 39, 40, 41 detect an increase in the load current value, it is determined that the pallet rolls 7, 7 are in slight contact, and the close adjustment is stopped. Next, the roll gap is adjusted to be opened for a predetermined time to be set to a predetermined initial gap (for example, 1 mm).
[0024]
Next , the operation lever 31 is operated from the (1) position to the (2) position. Then, the hail supply control valve 33 is opened, and when operated from the (2) position to the (3) position, the swing clutch (not shown) is operated to engage the clutch, and on the swing side of the swing sorting plate 15. The distributed grains are switched to the in-flight circulation state, and the hull sorting operation is started. When a predetermined time has elapsed and the sorting of the swing sorting plate 15 is in a stable sorting state, the operation lever 31 is operated from the (3) position to the (4) position while the swing clutch is maintained in the engaged state. The brown rice distributed on the rocking side of the rocking sorting plate 15 can be switched to the out-of-machine removal state.
[0025]
Next , the process proceeds to the roll gap control based on the load current value reference. Then, the detected load current values of the load current detection sensors 39, 40, 41 are sent to the control unit 36, and the detected load current value and the control reference value (related to the valve opening degree of the desorption rate setting switch and the soot supply control valve 33). If the detected load current value is higher (or lower) than the control reference value, the roll gap adjustment motor 44 is adjusted to the open side (or closed side) and detected. Control for returning the load current value to the control reference value is executed, and the load gap value is crushed while maintaining the roll gap at the reference gap. If the detected load current value is within the range of the control reference value, no control command is issued and the hulling operation is performed while maintaining the roll clearance as it is.
[0026]
In place of the roll gap control based on the load current value reference, a removal rate sensor (not shown) detects the removal rate of the slid rice, and the roll gap control is performed based on the removal rate reference. It is good. Moreover, it may replace with the grain extraction sensor 34 of the said Example, and it is good also as a structure which detects the sorting state on the rocking sorting board 15 with a sensor, the method of directly detecting the unpolished rice removal from the brown rice masher 5 with a sensor. The configuration of the embodiment is not limited.
[0027]
Next , at the time of the hulling sorting operation, the roll gap control is stopped and started by the load current value when the grains distributed on the rocking side of the swing sorting plate 15 are switched to the out-of-machine extraction state and the in-machine circulation state. Will be described with reference to FIG. When this control is started, it is determined whether or not the main motor 35 is ON (for example, it is determined that the load current value is detected when the load current sensors 39, 40, and 41 are equal to or higher than the reference value). In this case, initial setting control of the roll gap is performed, then the open / close state of the soot supply control valve 33 is determined, and when the opening degree of the soot supply control valve 33 is detected by the valve opening sensor 42, When the presence or absence of the grain in the hopper 6 is determined and the Glen sensor 43 is turned on and the presence of the grain is detected, it is judged whether the oscillating selected grain is circulated in the machine or taken out of the machine, and the grain take-out sensor 34 is turned on. When it is detected that the machine is in the out-of-machine state, it is then determined whether or not a predetermined time (for example, 60 seconds) has elapsed since switching to the out-of-machine state, and a predetermined time in the timer mechanism built in the control unit 36 is determined. When the progress is detected, the roll gap control based on the load current value reference Migrated, the main mode - When the motor 35 is stopped, the control is ended.
[0028]
Note that the roll gap control based on the load current value is also stopped even when the straw supply control valve 33 is fully closed and the straw hopper 6 has no grain. As described above, while the grain distributed on the rocking side of the rocking sorting plate 15 is circulating in the machine, the roll gap control based on the load current value reference is stopped, and the internal circulation is switched to the outside take-out. Roll clearance control is started after a predetermined time has elapsed and the sorting operation has been stabilized.
[0029]
Thus, in the in-machine circulation state, the grain taken out from the swaying side of the swing sorting plate 15 is circulated in the machine to increase the amount of the grain in the mixed rice hopper 24, and the rice cake of the rice huller 1 is related to this. When the opening degree of the supply control valve 33 is closed and compared with the normal sorting stable state during taking out of the grain, the load current value greatly changes and is away from the normal sorting operation state. If the roll clearance control of the hulling rolls 7 and 7 is started in such a state, there is a possibility that an erroneous command for closing the roll clearance is issued. When such an erroneous command is issued, the hulling rolls 7 and 7 are closed and adjusted, and it takes time to return to the roll gap during normal work, and control is not stable. However, such a problem can be solved by adopting the above-described configuration.
Next, the embodiment shown in FIG. 9 will be described.
[0030]
When the control is started, it is determined whether or not the main motor 35 is turned on. If it is turned on, initial setting control of the roll gap is performed. When the open state of the straw supply control valve 33 is detected from the detection information of the valve opening sensor 42, the presence / absence of grain in the straw hopper 6 is then shifted to a determination process, and the Glen sensor 43 is turned on to indicate that there is a grain. If detected, the process then proceeds to a determination process of whether or not the swinging device (not shown) of the swing sorting plate 15 is being driven. When swing drive is detected based on the detection information of the swing rotation sensor 45, the swing is detected. The process proceeds to a determination process for determining whether or not a predetermined time (for example, 90 seconds) has elapsed from the start of driving, and when the elapsed time is detected by the time measuring means, the process then proceeds to the roll gap control based on the load current value reference. . This control ends when the main motor 35 stops.
[0031]
Note that the roll gap control based on the load current value is stopped even when the straw supply control valve 33 is fully closed and the straw hopper 6 has no grain. During the hull sorting operation, the operation lever 31 is operated from the position (4) and from the position (3) to the position (2) to switch the swing clutch to stop the swing movement of the swing sorting plate 15. At the same time, the grains distributed on the rocking side of the rocking sorting plate 15 are switched to the in-machine circulation state. In this state, since the other parts of the rice hull sorter are driven, the amount of the grains in the mixed rice hopper 24 is increased by the supply of the in-machine circulating grains. The opening degree is adjusted narrowly, the load current value of the main motor 35 is reduced, and the state changes greatly from the normal working state. From this state, if the roll gap control based on the load current value reference is resumed immediately after the oscillation of the oscillation sorting plate 15 is resumed, the roll gap of the roll gap is related to the detection of the decrease in the load current value. There is a possibility that a close adjustment command may be output. When such control is performed, the opening of the roll gap is adjusted by increasing the supply amount to the hulling rolls 7 and 7 related to the subsequent decrease in the grain amount of the mixed rice hopper 24, and the control is stable. do not do. However, when the roll gap control based on the load current value reference is resumed after returning to the normal sorting state after a predetermined time from the start of swinging, the above-mentioned problems can be solved and the control can be stabilized.
[Brief description of the drawings]
[Fig. 1] Whole cut side view [Fig. 2] Plan view [Fig. 3] Side view [Fig. 4] Rear view [Fig. 5] Front view and side view showing the operation groove [Fig. 6] Table [Fig. 7] Block [Figure 8] Flow Chart [Figure 9] Flow Chart [Explanation of Symbols]
DESCRIPTION OF SYMBOLS 1 ... Rice hull part, 2 ... Sliding rice wind selection part, 3 ... Swing sorter, 4 ... Mixed rice cereal machine, 5 ... Brown rice cereal machine, 6 ... Rice hopper, 7 ... Rice hull roll, 8 ... Hulling room, 9 ... Rolled rice-style selection box, 10 ... Rolled rice-style selection path, 11 ... Rushing rice-receiving box, 12 ... Rushing rice-receiving box, 13 ... Suction fan, 14 ... Dust-cylinder, 15 ... Swing Dynamic sorting plate, 16 ... Distributing supply bowl, 17 ... Distributing case, 18 ... Brown rice partition board, 19 ... Brown rice partition board, 20 ... Brown rice extraction basket, 21 ... Brown rice flow path, 22 ... Mixed rice extraction basket, 23 ... Mixed rice Flow path, 24 ... Mixed rice hopper, 25 ... Straw picking trough, 26 ... Straw path, 27 ... Straw mill, 28 ... Flat part, 29 ... Dust cover, 30 ... Swing cover, 31 ... Operation Lever, 32 ... operation groove, 33 ... straw supply control valve, 34 ... grain take-out sensor, 35 ... main motor, 36 ... controller, 37 ... electromagnetic switch, 38 ... stop switch, 39 ... R phase load Current sensor , 40 ... S-phase load current sensor, 41 ... T-phase load current sensor, 42 ... valve opening degree sensor, 43 ... Glen sensor, 44 ... roll gap adjusting motor

Claims (1)

A pair of hulling rolls 7, 7 for hulling the rice cake supplied from the hull hopper 6; a sliding rice wind selecting unit 2 for wind-selecting the hulled rice that has been hulled by the hulling rolls 7, 7; The swing sorting device 3 having a swing sorting plate 15 for separating and sorting the mixed rice wind-selected by the sliding rice wind sorting unit 2 and the grains separated and sorted on the swing side by the swing sorting plate 15 Oscillating grain switching means for switching to an in-machine circulation state or an out-of-machine extraction state, an oscillating clutch for turning on and off the oscillating drive of the oscillating sorting plate 15, the oscillating grain switching means and the oscillating clutch Operating lever 31, operating lever 31 for detecting that the operating lever 31 has been operated to take the grain out of the machine, and taking out the grain to the hulling rolls 7 and 7 A soot supply control valve 33 for adjusting the supply amount, a valve opening degree sensor 42 for detecting the opening degree of the soot supply control valve 33, and soot Roll gap adjusting means for adjusting the roll gap between the rollers 7, 7; a main motor 35 for driving the hull sorter; and a load for detecting a load current value of the main motor 35. A current gap sensor and a roll gap automatic control means for automatically adjusting the roll gap of the hulling rolls 7 and 7 on the basis of the load current value are provided. The mixed rice is supplied to the swing sorting plate 15 through the mixed rice hopper 24, the distribution supply basket 16 and the distribution case 17, and the mixed rice hopper 24 and the rice supply control valve 33 are linked via a link mechanism. Connected and configured to adjust the opening and closing of the rice bran feed control valve 33 so that the amount of grain supplied to the hulling rolls 7 and 7 is increased or decreased in conjunction with the vertical movement caused by the increase or decrease of the grain amount of the mixed rice hopper 24, In the on-machine circulation switching state of the swinging grain switching means, the roll gap of the roll gap automatic control means is When the grain take-out sensor 34 detects that the operation lever 31 has been switched to the position where the grain has been taken out of the machine, the roll of the roll gap automatic control means will roll after a predetermined time. A roll gap control device for a hulling roll, characterized in that gap control is started.

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