JP2010075789A - Rice hulling and sorting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly resume rice hulling working after an automatic working is suspended in a swinging sorting board type rice hulling and sorting machine. <P>SOLUTION: The rice hulling and sorting machine is configured such that sorted rice hulls are taken out from a rice hull discharge port opened at a swinging lower sidewall of the swinging sorting board 15 in a mixed rice sorting section 3 and the rice hulls are elevatably returned to a rice hulling section 1 through a hull thrower 27, including a sorting board angle controlling motor M2 that controls an inclination angle in the transverse direction of the swinging sorting board 15, a non-hull sensing means SE5 for sensing non-existence of hulls in a hull hopper 6 of the rice hulling section 1. A controller 40 that controls a transverse inclination angle of the swinging sorting board 15 on a loose inclination side by the sorting board angle controlling motor M2, switches a circulation/discharge switching valve 34 to a circulation side with a circulation/discharge switching motor M4, and turns OFF a main motor M1 based on the non-existence of the hulls sensed by the non-hull sensing means SE5 is provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

    The present invention relates to a hull sorter.

  The brown rice partition plate that tilts the swing sorting plate in both the vertical and horizontal directions and swings back and forth diagonally up and down in the horizontal direction and faces the discharge side end of the swing sorting plate to separate the sorted mixed rice and the sorted mixed rice horizontally. Is provided so that it can be moved and adjusted in the direction, and a sorting outlet is provided near the discharge side of the swaying side wall of the oscillating sorting plate so as to take out the sorting slag and return it to the hulling part via a slag follower. Is known (Patent Document 1).

In the swing sorting type hull sorter, a hull sensor for detecting the presence or absence of wrinkles is provided in the hull hopper of the hull portion, and the main motor for driving the hull sorter is driven in connection with the wrinkle detection of the hull sensor. A device provided with automatic work stopping means for stopping the operation is known (Patent Document 2).
JP 2005-334814 A JP 2008-6412 A

  In the rice hull sorting machine that takes out the sorting hull from the hull outlet near the discharge side of the swing side wall of the swing sorting plate of Patent Document 1 and returns it to the hull portion by the hull slot, When control is performed to stop driving the main motor for driving the hull sorter in connection with the absence detection, the sorting hull flows down from the wrinkle outlet of the swing sorting plate at the time of stoppage, resulting in clogging of the grain in the hull This problem occurs. Therefore, the present invention is to solve such problems, prevent clogging of the grain of the straw bales after the automatic operation stop, and smoothly resume the hulling work.

In order to solve the above problems, the present invention has taken the following technical means.
The invention of claim 1 includes a rice hull portion (1), a crushed rice-style selection portion (2), a rocking and sorting plate type mixed rice sorting portion (3), a mixed rice cerealing machine (4), and brown rice cerealing In the rice hull sorter equipped with the machine (5), the rice straw (27), and the main motor (M1) for driving them, the rocking sorting plate (15) of the mixed rice sorting unit (3) is shaken. A sorting culm is taken out from the culm discharge port 31a opened in the side wall, and is configured so that it can be returned to the culm portion (1) via the culm slot (27). A sorting plate angle adjusting motor (M2) for adjusting the inclination angle of the direction is provided, and the mixed rice sorting unit (3) is provided with a circulation / discharge switching valve (34) for switching the selected grains to in-machine circulation or out-machine discharge. And can be switched by the circulation / discharge switching motor (M4), and the hull hopper (6) of the hulling portion (1) is free of wrinkles. Rice without detection means (SE5) provided and out,
Based on the detection of no wrinkles by the wrinkle free detection means (SE5), the horizontal inclination angle of the swinging selection plate (15) is adjusted to the gentle inclination side by the selection plate angle adjustment motor (M2), and the circulation / discharge switching motor ( The hull sorter is characterized by having a controller (40) for switching the circulation / discharge switching valve (34) to the circulation side by M4) and turning off the main motor (M1).

  According to the said structure, a rice hull part (1), a sliding rice wind selection part (2), a mixed rice sorter part (3) of a rocking sorter plate type, a mixed rice flourer (4), a brown rice flourer ( 5) and the straw lower (27) are driven by the main motor (M1), and when the rice bran sorting operation is started, the straw opened on the swaying side wall of the rocking sorting plate (15) of the mixed rice sorting section (3) The selected rice cake is taken out from the discharge port 31a, and the cereals are returned to the rice hull portion (1) via the rice cake slot (27). During the hulling operation, when the wrinkle-free detecting means (SE5) detects the wrinkle-free detection of the wrinkle hopper (6), a work stop command is output from the controller (40), and the sorting plate angle adjusting motor (M2) performs swing sorting. The horizontal inclination angle of the plate (15) is adjusted to the gentle inclination side, the circulation / discharge switching motor (M4) switches the circulation / discharge switching valve (34) to the circulation side, the main motor (M1) is turned OFF, The sorting operation is automatically stopped.

  According to the invention of claim 2, when the main motor (M1) is turned on after the automatic pallet sorting operation is stopped and the pallet sorting operation is resumed, the sorting plate angle adjusting motor (M2) causes the swing sorting plate (15) to move. The automatic operation stop device for a hulling sorter according to claim 1, further comprising a controller (40) for adjusting the horizontal inclination angle to the steep inclination side to restore the horizontal inclination angle at the previous work. .

  According to the above configuration, when the main motor (M1) is turned on after the automatic pallet sorting operation is stopped and the pallet sorting operation is resumed, a work resumption command is output from the controller (40), and the sorting plate angle adjusting motor (M2). Thus, the horizontal inclination angle of the swing sorting plate (15) is adjusted to the steep inclination side to return to the horizontal inclination angle at the previous work, and the hulling sorting work is resumed.

  According to the first aspect of the present invention, when the hull sorting operation is automatically stopped based on the wrinkle detection of the hull hopper (6), the main motor is adjusted by adjusting the lateral tilt angle of the swing sorting plate (15) to the gentle tilt side. (M1) is stopped, so that the sorting slag is prevented from flowing out from the slag discharge port 31a opened in the swaying side wall of the swaying sorting plate (15), and the grain of the slag thrower (27) is clogged when the operation is resumed. Can be prevented.

  In addition to the effect of the invention of claim 1, the invention of claim 2 adjusts the lateral inclination angle of the swing sorting plate (15) to the steep inclination side when resuming the operation after the automatic stop of the hulling sorting operation. Then, since the state at the previous work is restored, the sorting work of the swing sorting plate (15) can be quickly optimized and the work can be resumed.

Hereinafter, embodiments of the present invention shown in the drawings will be described.
First, based on FIG. 1, the whole structure of the hull sorter which comprises this invention is demonstrated.
The rice hull sorter includes a hulling portion 1 arranged at the upper front side of the machine body, a hulled rice wind selecting unit 2 arranged at the rear side of the hulling portion 1, and a rocker arranged at the rear side of the hulled rice wind selecting unit 2. The mixed rice sorting unit 3 of the moving sorter plate type, the mixed rice cerealing machine 4 for pulverizing the fallen rice, the brown rice cerealing machine 5 for taking out the sorted brown rice of the mixed rice sorting unit 3 to the outside of the machine, and the mixed rice sorting unit 3 It is comprised by the rice cake slot 27 etc. which reduce | restored the sorted rice cake to the rice hull part 1.

  The hulling portion 1 is configured as a hulling roll type, and a wrinkle hopper 6, a pair of hulling rolls 7, 7, and vibration-type sliding rice transfer provided below the hulling rolls 7, 7. It is composed of shelves 8 and the like. The rice cake of the rice hopper 6 is crushed by the rice hull rolls 7 and 7 and supplied to the fallen rice transfer shelf 8, and is transferred to the rear side by the vibrating rice transfer shelf 8 to vibrate. Supplied to section 2.

  The sliding rice wind selection unit 2 includes a sliding rice wind selection box 9, a sliding rice sorting air path 10 disposed in the vertical direction in the sliding rice wind selection box 9, and a sliding rice selection wind path. 10 of the rice cake receiving bowl 11 provided below the middle part of the crushed rice, the sliding rice bowl 12 provided on the lower side which is the starting end of the crushed rice sorting air path 10, and It is composed of a red pepper 13, a dust exhaust cylinder 14, and the like disposed on the upper side which is a terminal part.

  Next, the oscillating sorting type mixed rice sorting unit 3 will be described. The multistage oscillating sorting plates 15 are formed with irregularities for sorting on the plate surface, with one side in the vertical direction being a high supply side and the other side being a low discharge side, and a horizontal direction perpendicular to the vertical direction. The one side of the swinging plate is tilted in both the vertical and horizontal directions with the high swinging side on the opposite side and the low swinging side on the opposite side. It is configured to reciprocally swing up and down in the horizontal direction by a moving device (not shown). A supply port is formed on the supply side of the swing sorting plates 15,..., And the mixed rice wind-selected by the sliding rice receiving tray 12 is mixed rice masher 4, mixed rice tank 24, and distribution supply basket. 16 and the distribution case 17 are supplied to the swing sorting plates 15,.

  In addition, a soot discharge port 31a is cut out at the discharge side portion of the swaying side wall of the oscillating sorting plate 15,... It is configured to supply.

  The mixed rice supplied to the oscillating sorting plates 15, ... has a grain size, specific gravity, friction coefficient, etc., so that small brown rice with heavy specific gravity is distributed in a drifting manner on the rocking side and compared with brown rice Thus, large and light specific rice cakes are distributed while drifting to the underside, and mixed rice of rice cake and brown rice that is not separated is distributed in the middle. These selected grains are separated and extracted by the brown rice partition plate 18 and the straw partition plate 19 provided on the discharge side of the swing sorting plate 15.

  The extracted sorted brown rice is taken out of the machine through the brown rice extraction gruel 20, the brown rice flow path 21, and the brown rice cerealing machine 5. Further, the selected mixed rice taken out passes through the mixed rice extraction basket 22, the mixed rice channel 23, the sliding rice receiving tray 12, the mixed rice cerealing machine 4, the mixed rice tank 24, the distribution supply basket 16, and the distribution case 17. , Are supplied to the swing sorting plates 15,.

  Of the sorting soot that is flow-separated to the swaying side of the swaying sorting plates 15,..., The one that has flowed down along the swaying side wall is taken out from the soot discharge port 31 a to the soot reduction channel 31. The material that has flowed down the swaying side from the swaying side wall is separated from the discharge side end of the swaying sorting plate 15,. The sorted rice cake taken out in this way is reduced to the rice cake portion 1 through the rice cake flow path 26 and the rice cake slot 27, and is again rice caked. Note that the rice cake selected by the rice cake receiving bowl 11 by the sliding rice wind selection section 2 is sent to the rice cake blower 27, and is reduced to the rice milling section 1 together with the sorting rice cake of the mixed rice sorting section 3.

Further, the roll gaps of the hulling rolls 7 and 7 are configured to be adjustable, and the opening / closing adjustment can be performed by rotating the roll gap adjusting motor M3 forward or backward.
Next, the operation panel 40 will be described with reference to FIG.

  On the operation panel 40 of the hull sorter, an operation / stop switch SW1, an automatic on / off switch SW2, a roll gap opening adjustment switch SW3, a roll gap closing adjustment switch SW4, a display changeover switch for switching and displaying a load current value and a voltage value. SW5, an automatic stop switch SW6 for automatically stopping the hulling operation, a digital display unit 41a for displaying the load current value and the voltage value, a motor load display unit 41b for displaying the load current value of the main motor M1, and a huller A roll gap display portion 41c for displaying the roll gap of the roll, an automatic on lamp 41d, an automatic stop on lamp 41e, and an automatic stop cut lamp 41f are provided.

Next, a control block configuration will be described with reference to FIG.
On the input side of the controller 40 with a built-in CPU, there are various switches as an operation / stop switch SW1, an automatic on / off switch SW2, a roll gap opening adjustment switch SW3, a roll gap closing adjustment switch SW4, a display changeover switch SW5, an automatic stop switch. SW6 is connected. Further, as various sensors, a valve opening sensor SE1 that detects the opening degree of the soot supply control valve 33, a shutter open / close sensor SE2 that detects opening and closing of the soot supply control valve 33, and circulation switching of the circulation / discharge switching valve 34 are detected. A circulation sensor SE3 that performs discharge, a discharge sensor SE4 that detects discharge switching, and a load current sensor SW5 that detects a load current value of the main motor M1 are connected.

  A main motor M1, a sorting plate angle adjustment motor M2, a roll gap adjustment motor M3, and a circulation / discharge switching motor M4 are connected to the output side of the controller 40, and a digital display section 41a, a motor load display section 41b, a roll gap A display 41c, an automatic on lamp 41d, an automatic stop on lamp 41e, and an automatic stop off lamp 41f are connected.

Next, the hulling operation automatic stop control when the hull hopper 6 is broken will be described with reference to FIG.
Of the sorting soot that has flow-separated to the swaying side of the swaying sorting plates 15,..., The one that has flowed down along the swaying side wall is taken out from the soot discharge port 31 a to the soot reduction flow path 31. The oscillating upper side of the oscillating side is separated from the discharge side end portion of the swing sorting plate 15 by the eaves partition plate 18 and taken out to the eaves take-out eave 25, and is returned to the eaves portion 1 via the eaves slot 27 In the hull sorting machine, the horizontal inclination angle of the swinging sorting plates 15,... Can be adjusted by the sorting plate angle adjusting motor M2. Then, the load current sensor SE5 detects a load current value lower than the work stop reference value and determines that there is no wrinkle in the wrinkle hopper 6, and the horizontal inclination of the swinging sorting plate 15 by the sorting plate angle adjusting motor M2 is performed. The angle is adjusted to a gentle inclination side, the circulation / discharge switching valve 34 is switched to the circulation side by the circulation / discharge switching motor M4, the main motor M1 is turned off, and the hulling operation is automatically stopped.

  As shown in FIG. 4, when the automatic work stop control is started, the operation / stop switch SW1 is turned on (step S1), and the hull sorting operation is started (step S2). Next, it is determined whether or not the heel hopper 6 is free of wrinkles depending on whether or not the detected load current value of the load current sensor SE5 is lower than the work stop reference value (step S3). Returning, in the case of Yes, it is determined whether or not the automatic stop mode in which the automatic stop switch SW6 is ON (step S4).

  In the case of No, the main motor M1 is driven until the operation / stop switch SW1 is turned off, and the hulling sorting operation is continued. In the case of Yes, the horizontal inclination angle of the swinging selection plate 15 is adjusted to the gentle inclination side by the selection plate angle adjustment motor M2 (step S6), and then the circulation / discharge switching valve is operated by the circulation / discharge switching motor M4. 34 is switched to the circulation side (step S7), then the main motor M1 is turned off, the hulling operation is automatically stopped (step S8), the automatic stop switch SW6 is turned off, and the automatic operation stop mode is turned off.

  Next, it is determined whether or not the operation / stop switch SW1 is ON (step S10). If YES, the main motor M1 is turned ON (step S11), and the lateral inclination angle of the swing sorting plate 15 is set to the steep inclination side. To the horizontal inclination angle in the previous work (step S12). Next, the residual grain sorting process is executed for a predetermined time, and when the residual grain is entirely brown rice, the circulation / discharge switching valve 34 is switched to the discharge side, the sorted brown rice is taken out of the machine, and the rice hull sorting operation is completed. To do.

In addition, when detecting the absence of wrinkles in the wrinkle hopper 6, a wrinkle free sensor (not shown) may be provided in the wrinkle hopper 6 to detect wrinkles in the wrinkle hopper 6.
According to the above-described configuration, when the hulling operation is automatically stopped, the main motor M1 is stopped by adjusting the lateral inclination angle of the swing sorting plate 15 to the gentle tilt side. It is possible to prevent the sorting straw from falling and to prevent clogging of the grain of the straw 27 when the work is resumed. Further, when the work is resumed, the horizontal tilt angle of the swing sorting plate 15 is adjusted to the steep tilt side to return to the previous work state, so that the sorting work of the swing sorting plate 15 can be resumed while quickly optimizing. it can.

  Further, when the main motor M1 is stopped in connection with the detection of the absence of wrinkles of the hanger hopper 6, the partition position of the hail partition plate 19 is detected by a hail partition position sensor (not shown), and the partition position of the hail partition plate 19 is changed. When the distribution width of the sorting basket is wide on the upper side, the time from detection of no crack to the stop of the main motor M1 is lengthened, and the distribution width of the sorting basket is narrow when the position of the basket partition plate 19 is on the swaying side If the time from the absence of wrinkle detection to the stop of the main motor M1 is shortened, clogging of the grains of the huller 27 when the hulling operation is resumed can be prevented.

Another embodiment of the hulling work automatic stop control will be described.
The mixed rice tank 24 of the mixed rice sorting unit 3 is provided with a mixed rice empty sensor SE6 that detects the empty state of the tank. When the automatic operation stop control is started, the operation / stop switch SW1 is turned on to perform the rice hull sorting work. Start. Next, it is determined whether or not the soot hopper 6 has no soot based on the detected load current value of the load current sensor SE5. If no soot is present, the mixed rice empty sensor SE6 detects the empty of the mixed rice tank 24. Then, it is determined whether or not the automatic stop switch SW6 is in the automatic stop mode.

  In the automatic stop mode, the circulation / discharge switching valve 34 is switched to the circulation side by the circulation / discharge switching motor M4. Next, if the operator does not switch the circulation / discharge switching valve 34 to the discharge side after a predetermined time (for example, 5 minutes), the swing mode M5 is stopped and the swing sorting plate 15 is stopped. Next, if the operator does not switch the circulation / discharge switching valve 34 to the circulation side even after a predetermined time (for example, 5 minutes) has elapsed, the main motor M1 is turned off, the hulling portion 1, the sliding rice wind selection portion. 2. Stop the mixed rice cerealing machine 4, the brown rice cerealing machine 5, and the rice straw 27, and automatically stop the rice hulling operation.

According to the said structure, unattended operation can be performed, improving work efficiency.
Next, the roll gap control of the hulling rolls 7 and 7 will be described with reference to FIG.
When power is supplied to the controller 40, initial gap setting control of the hulling rolls 7 and 7 is executed. When the initial gap setting control is started, it is determined whether or not the main motor M1 is activated. If the main motor M1 is activated, the load current sensor is adjusted while opening the roll gap by the roll gap adjusting motor M3. When the load current value is detected by SE5 and the detected load current value does not change, it is determined that the hulling rolls 7 and 7 are in a non-contact state, and the opening adjustment of the roll gap is stopped. Next, the load current value is detected by the load current sensor SE5 while closing the roll gap between the hulling rolls 7 and 7, and when the increase in the load current value is detected, it is determined that the hulling rolls 7 and 7 are in fine contact, Stop adjusting the roll gap. Next, the roll gap is adjusted to open over a predetermined time (for example, 8 seconds), and set to a predetermined initial roll gap (for example, 0.8 mm).

  When the initial gap setting of the roll gap is completed, as shown in FIG. 7, the process shifts to roll gap control based on the load current value reference. Then, the work reference load current value (AP) corresponding to the opening degree of the rod supply control valve 33 is calculated and determined by a predetermined calculation formula with respect to the load current value (A) of the initial gap setting, and the roll gap control is started. To do. During the hulling operation, the detected load current value decreases sequentially due to wear of the hulling roll, and when the detected load current value becomes the closed adjustment reference load current value (A1) after a predetermined time (t seconds), the roll gap adjustment motor M3 The roll gap is closed and adjusted over the reference closing adjustment time, the detected load current value is returned to the work reference load current value (AP), and then the control shifts to the roll gap control by the timer control.

  When the timer control roll gap control is entered, the timer time (T) is set, and when the remaining timer time becomes zero, the roll gap adjustment motor M3 is driven for a reference close adjustment time to adjust the roll gap to a predetermined gap, and thereafter The same closing adjustment is performed sequentially.

  According to the above configuration, after setting the initial gap of the roll gap, the roll gap control based on the load current value standard is first executed, and the control shifts to the roll gap control by the timer control in a stable state. Can be increased.

  Moreover, you may comprise as shown in FIG. In the roll gap control in which the roll gap control based on the load current value reference is first executed after the initial setting of the roll gap and then the control is shifted to the roll gap control by the timer control, after the timer time ends after a predetermined time (for example, 1 hour). When the detected load current value becomes “AP + b” and the work reference load current value increases from “AP” to “AP + a” during the roll gap reference closing adjustment, the reference closing adjustment after the end of the subsequent timer time is performed. For example, execute as follows. By performing a close adjustment that suppresses an increase in the load current value, such as “[t] × [b / (a + b)”, the adjustment can be restored to a value approximate to the work reference load current value (AP). it can. According to the said structure, roll gap control by timer control can be performed, improving the precision of roll gap control.

Next, another embodiment of the straw slot 27 will be described with reference to FIG.
It is comprised by the threshing throat 27, the cerealing blade 27a, the cerealing case 27b which has pivoted the cerealing blade 27a rotatably, and the cerealing cylinder 27c connected to the cerealing case 27b. Then, a cereal blade 27 a is attached to one side end of the cocoon spiral 11 a of the cocoon receiving bowl 11, so that the cocoons selected by the cocoon receiving bowl 11 can be supplied to the cocoon slot 27. Further, a plurality of grain outlets 27e,... Are opened on the side wall of the whipped case 27b, and grain guide surfaces 27f,... That extend laterally from the rear side to the front side are provided on the grain outlets 27e,. Provided. Further, a reduction hopper 36 is attached to the basket lower 27 so that the sorting basket from the swing sorting plate 15 is supplied while flowing down from the rear side to the front side.

  According to the above configuration, when the cerealing blades 27a of the straw slot 27 rotate in the counterclockwise direction, the sorted culm and the sorted culm can be crushed to the rice hull portion 1. Moreover, while the cereal blade 27a is stopped, the grain flows out from the grain outlet 27e,... Grain clogging can be prevented.

  Next, another embodiment of the reduction hopper 36 will be described with reference to FIG. A shutter 36a is provided on the inclined bottom plate of the reduction hopper 36 so as to be freely opened and closed. An operation lever 36b that can be operated from the outside of the apparatus is attached to the shutter 36a, and a spring 36c is attached to the shutter 36a so as to close and close the shutter 36a. According to the said structure, if the operation lever 36b is pushed down against the spring 36c, the shutter 36a will open, a grain will be dropped to the sliding rice pad 12 below, and the clogging of a grain can be prevented.

  Further, as shown in FIG. 9, the shutter 36a may be configured to be opened and closed by a shutter opening / closing motor M6. Further, as shown in FIG. 10, a shutter 36a may be provided so as to be reciprocally opened and closed along the inclined bottom plate of the reduction hopper 36, and may be configured to be opened and closed by a shutter opening and closing motor M6.

The whole cutting side view of a hulling sorter. The front view of an operation panel. Control block diagram. The control flowchart. The figure which shows the change of the load electric current value at the time of the roll clearance gap control of a hulling roll. The figure which shows the change of the load electric current value at the time of the roll clearance gap control of a hulling roll. The perspective view and cutting | disconnection top view of a straw. The rear view and side view of a reduction hopper. The rear view and side view of a reduction hopper. The rear view and side view of a reduction hopper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rice hull part 2 Sliding rice wind selection part 3 Mixed rice sorting part 4 Mixed rice cerealing machine 5 Brown rice cerealing machine 6 Rice hopper 7 Rice hull roll 15 Oscillation sorting plate 27 籾 Slower 34 Circulation / discharge switching valve M1 main Motor M2 Sorting plate angle adjustment motor M4 Circulation / discharge switching motor SE5 No wrinkle detection means

Claims (2)

  Rice hull portion (1), slashed rice wind selection portion (2), rocking sorter type mixed rice sorting portion (3), mixed rice cerealing machine (4), brown rice cerealing machine (5) In the grain mill (27) and the rice hull sorter equipped with the main motor (M1) for driving these, the side opening of the rocking sorting plate (15) of the mixed rice sorting section (3) is opened. The sorting soot is taken out from the soot discharge port and can be returned to the rice huller part (1) via the soot slot (27) so that the grain can be returned to the grain, and the lateral inclination angle of the swing sorting plate (15) is adjusted. A sorting plate angle adjusting motor (M2) is provided, and the mixed rice sorting unit (3) is provided with a circulation / discharge switching valve (34) for switching the selected grains to circulation inside the machine or to discharge outside the machine. (M4) is configured to be switchable, and wrinkle-free detecting means for detecting the wrinkle of the wrinkle hopper (6) of the hulling portion (1) ( E5) is provided, and based on the detection of no wrinkle by the wrinkle absence detecting means (SE5), the horizontal inclination angle of the swinging selection plate (15) is adjusted to the gentle inclination side by the selection plate angle adjusting motor (M2), and the circulation is performed. A rice hull sorter comprising a controller (40) for switching the circulation / discharge switching valve (34) to the circulation side by the / discharge switching motor (M4) and turning off the main motor (M1).   When the main motor (M1) is turned on after the automatic stop of the hulling sorting operation and the hulling sorting operation is resumed, the horizontal tilt angle of the swinging sorting plate (15) is steeply inclined by the sorting plate angle adjusting motor (M2). The pallet sorter according to claim 1, further comprising a controller (40) that adjusts to a horizontal inclination angle during the previous operation.

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