JPH0767535B2 - Removal device for hulling machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a decontrolling device for a hulling machine that separates and removes paddy from brown rice and rice husks by a pair of derolling.

"Prior Art" Conventionally, as shown in JP-A-57-91750, a pair of derolling, a supply hopper for supplying paddy between the rolls,
There is a technique provided with a shutter that opens and closes the outlet of the hopper, and a de-adjustment member that automatically controls the de-rate of the roll.

[Problems to be Solved by the Invention] In the conventional technology, a photoelectric sensor having a light-emitting element and a light-receiving element is provided, and the paddle falling from the supply hopper to the derolling roller is detected by opening the shutter, but is dropped from the supply hopper. Even if a small amount of paddy is easily detected by the photoelectric sensor, when the photoelectric sensor no longer detects the paddy, the automatic control of the deregulating member is stopped, so that the paddy supplied to the derolling roll is automatically discharged until almost all the paddy is lost. Control is performed, the deroll rolls and runs, the deroll is damaged,
In addition, there was a problem that broken rice and misaligned rice occurred.

"Means for Solving the Problem" Therefore, the present invention is a pair of derolling, a supply hopper for supplying paddy between the rolls, a shutter for opening and closing the outlet of the hopper, and a derolling rate of the rolls are automatically controlled. In the de-controlling device for a hulling machine having a de-adjusting member, an illuminance detection member for detecting external light entering from the supply hopper when the shutter is open and the padding of the supply hopper is reduced is provided inside the shutter, and a predetermined or more external It is characterized in that a stop means for stopping the automatic control of the deregulation member based on the illuminance detection by the illuminance detection member when light enters the shutter is provided.

[Operation] Therefore, when the shutter opening at the outlet of the supply hopper is blocked by paddy to prevent the invasion of external light, a sufficient amount of paddy is supplied for derolling, and the deregulation member automatic control is properly performed. On the other hand, when the paddy of the supply hopper decreases and external light enters from the shutter opening, the paddy supplied to the derolling is insufficient, but the stopping means is detected by the external light entering the shutter. Since the automatic control of the de-adjusting member is stopped by operating, it can be surely prevented that the automatic control of the de-adjusting member is performed in the insufficient condition of the paddy, and the idling operation of the de-rolling performed by the continuation of the automatic control is easy. Therefore, it is possible to more easily reduce the abrasion damage of derolling, the occurrence of broken rice, and the presence of rubbed rice, as compared with the conventional case.

[Examples] Examples of the present invention will be described in detail below with reference to the drawings. 1 is an enlarged cross-sectional view of the hull portion, FIG. 2 is an overall view of the hull portion, and FIG.
The figure is the same sectional view. In the figure, (1) is a hulled portion,
(2) is a supply hopper for introducing paddy, (3) and (4) are a pair of derollers that are provided opposite to the lower part of the hopper (2),
(5) is a shutter for opening and closing the lower part of the hopper (2),
(6) is a deployment lever for urgently opening each roll (3) (4) by manual operation, (7) is the roll (3)
It is a removal rate motor that is a removal adjustment member that adjusts the contact and separation of (4).

In the figure, (8) is a wind selecting section on which the hulling section (1) is mounted, and removes small rice from brown rice taking out gutter (9) and brown rice conveyor (10) and brown rice falling into the gutter (9). Karato (11)
And the derolling rolls (3) (4) through a small rice pick-up gutter (12) and a small rice conveyor (13) that carry the small rice out of the machine, and a shell-grain scattering plate (14) and a shell plate (15). Sliding-off rice pick-up gutter (16) and sliding-off rice conveyor (17) that face down and receive scraped-off rice (brown rice and paddy), and rice-plucking gutter (18) that receives the peat separated from the scraped-off rice. ) And a rice cake conveyer (19), and a dust suction and exhaust fan (20) for discharging the rice husks separated from the scraped rice to the outside of the machine.

In the figure, (21) is placed on the wind selecting section (8) and the hulling section (1)
As shown in FIG. 4, upper and lower sorting cylinders (22) and (23) for separating brown rice and paddy by continuously rotating in one direction, and the front cylinder (22) ( Support rolls (24) ... (25) ... that rotatably support the respective 23) and a mixed rice supply tank (26) provided outside one end of the upper sorting cylinder (22).
A feed conveyor (27), a re-graining conveyor (28) and a brown rice receiving conveyor (29) which are inserted into the upper sorting cylinder (22),
A brown rice receiving conveyor (30) to be inserted into the lower sorting cylinder (23),
A rice selector (31) installed between the upper and lower brown rice receiving conveyors (29) (30) to connect them in series, and a chute (32) for connecting the paddy discharge end of the upper sorting cylinder (22) to the hopper (2). When,
A chute (33) that connects the re-graining conveyor (28) to the lower sorting cylinder (23) and a chute (34) that slides down the mixed rice discharge end of the lower sorting cylinder (23) to communicate with the rice picking gutter (16).
And a chute (35) for connecting the brown rice receiving conveyor (30) to the brown rice removing gutter (9).

Then, a brown rice lifting conveyor (36) for communicating the lower end side with the brown rice conveyor (10), and the scraped rice conveyor (17)
And a sorting rice lifting conveyor (37) that communicates the lower end side to the stand along the outside of the machine, and connects the upper end of the sorting rice lifting conveyor (37) to the supply tank (26) with a pipe ( 38) to communicate with each other, and the slid-off rice from the paddy hull (1) and the return-mixed rice from the sorting cylinder (23) are merged and put into the supply tank (26).

Further, an overflow gutter (39) communicating with the upper end side of the supply tank (26) is provided, and an opening / closing valve (40) is attached to the lower end opening of the overflow gutter (39) facing the upper surface of the supply hopper (2). The excess mixed rice in (26) is returned to the supply hopper (2) through the overflow gutter (39), and the on-off valve (40) is proportional to the increase in the amount of mixed rice returned to the supply hopper (2). Is configured to open.

Furthermore, the hulling section (1), the wind selecting section (8) and the selecting section (2
A hulling motor (41) for driving 1) is provided, and the derolling rolls (3), (4) are driven by the hulling motor (41).

FIG. 5 is an explanatory view of the hull portion (1), and the support shafts (42) (4
Each of the derolling rolls (3) and (4) axially supported in 3) is internally provided so as to face the hulling case (44), and the transmission gears (45) and (46) are attached to the supporting shafts (42) and (43). While supporting the shaft, a gear case (47) is provided on the hulling case (44), and the gear (45) is provided.
Install (46) inside the case (47). The drive gears (50) (51) are axially supported in the case (47) via the power shafts (48) (49), and the gears (45) (46) and (50) are supported.
(51) is always meshed, and the support shaft (43) of one of the derolling rolls (4) is supported in the middle of the gap adjusting ring (52), and one end of the link (52) is connected to one of the power shafts (49). )
It is supported on the same axis. A clearance adjusting shaft (55) interlockingly connected to the removal ratio motor (7) via gears (53) and (54) is provided, and the shaft ( 55) The screw part (55a) at one end is screwed and connected, and the hull gap (57) of each roll (3) (4) that inputs the hull by the forward and reverse control of the motor (7) is automatically expanded or reduced. In addition to the adjustment, a removal rate adjusting handle (58) is attached to the other end of the shaft (55), and the hull gap (57) is manually enlarged or reduced by rotating the handle (58). .

The shutter (5) is located above the rolls (3) and (4).
A feeding roll (59) provided below the feeding roll (59) for dropping the paddy from the feeding hopper (2) between the rolls (3) and (4), and a supply valve (60) for adjusting the amount of paddy dropped from the feeding roll (59). ) And a potentiometer-type supply amount sensor (61) for detecting the amount of paddy supplied to the derolling rolls (3) and (4) in conjunction with the opening / closing operation of the valve (60). The on-off valve (40) is interlockingly connected with the wire (62) and the like, and the supply valve (60) is closed in proportion to the opening movement of the on-off valve (40) to constantly select a fixed amount of mixed rice (21). ), The amount of paddy supplied to the derolling rolls (3) and (4) is automatically adjusted.

Further, as shown in FIGS. 1 and 5, a light emitting diode or the like is provided on the inner wall surface of the rice hull case (44) above the supply valve (60) between the shutter (5) and the derollers (3) and (4). The light emitting member (63) is fixed and the light emitting member (6
3) The solar cell (6
4) The rice pad detection device (65) is configured by a light emitting member (63) and a solar cell (64) that are fixedly installed opposite to each other, and the light of the light emitting member (63) and the outside of the shutter (5). The solar cell (64) is made to sense the light emitted from the solar cell (64), and a paddy shortage output is obtained from the solar cell (64) by the incidence of at least one of the respective lights.

As shown in FIG. 6, a current transformer (66) which is a load sensor for detecting a change in driving load of the hulling motor (41), and a reference for initializing the removal rate of the derolling rolls (3) and (4). The removal rate setting device (67) is provided, and the power source (R, S, of the motor (41) proportional to the drive load change of the removal rolls (3), (4).
The current change of T) is detected by the current transformer (66), and the change of the dehulling gap (57) of the derolling (3) and (4) and the change of the removal rate due to the change of the paddy supply amount are detected by the current transformer (66). The detection is performed based on the load current output.

Further, the supply amount sensor (61) and the current transformer (66) are input-connected to the differential amplifier (68) via the buffers (69) (70), and the output of the sensor (61) and the current transformer (66). The difference from the output is output from the amplifier (68), the output of the current transformer (66) is corrected based on the output of the sensor (61), and the output of the amplifier (68) and the reference removal rate setting device (67). ) Equipped with a loss rate adjustment comparator (71) (72) for comparing the output with the output rate change of the motor (41) based on a change in the load current of the motor (41). It is connected to the supply amount sensor (61) through the buffer (69), and the standard removal rate is corrected by the change in the amount of paddy supplied to the derolling (3) and (4), and the padding supply of the derolling (3) and (4). Comparator (71) based on the change of hulling load regardless of the change of quantity (71)
(72) is configured to detect changes in the withdrawal rate.

Further, a dead zone setting comparator (7) for comparing the outputs of the comparators (71) (72) and the supply amount sensor (61).
3) (74) is provided, and the dead zone output range of the escape rate is judged by the comparators (73) (74) based on the output of the sensor (61), and the escape rate adjustment comparator which is the escape rate control value for the reference escape rate. (71) (72) dead band width of output is corrected by the output of the sensor (61), roll removal (3)
Regardless of the change in the amount of paddy supply in (4), the dead zone width of the rate of removal control centered on the standard rate of depletion is kept substantially constant.

On the other hand, the release motor (7) is provided with opening and closing relays (77) and (78) for applying and controlling a driving power source via forward and reverse relay switches (75) and (76), and each relay (77) ( 7
8) the dead zone setting comparators (73) (74) are connected to the output through the drivers (79) (80), and an automatic switch (81) for switching the removal rate control to an automatic mode is provided,
The relays (77) (78) are connected in parallel to the switch (81), and the relays (77) (78) are operated and controlled based on the outputs of the comparators (73) (74), and the motor (7)
Is controlled in the normal and reverse directions to enlarge or reduce the hull gap (57) so that the derolling rates of the derolling rolls (3) and (4) are kept substantially constant.

Further, a high escape rate indicator (82) and a low escape rate indicator (83) are connected in parallel to the respective relays (77) (78), and the outputs of the dead zone setting comparators (73) (74) are turned off. The driver (85) (86) that detects this when turning on the proper escape rate indicator (84) is provided, while the automatic indicator (87) that indicates the ON operation of the automatic switch (81).
Each of the indicators (82) (83) (84) (87) is connected to an automatic switch (81), and displays the detached state only during automatic control. ) Is configured to operate.

Next, an overload detection comparator (88) and an underload detection comparator (89) are provided, and each comparator (8
8) (89) to the current transformer (6) via the buffer (70) (90)
6) is connected to the input, the overload detection comparator (88) is connected to the rotation relay (77) via the driver (79),
When the driving load of the hulling motor (41) exceeds the set range, the opening relay (77) is activated based on the output of the comparator (88), and the hull clearance of the derolling rolls (3) and (4) is increased. (57) is expanded and the underload detection comparator (89) is closed via the driver (80) to the relay (78).
The comparator (89) is connected to the hulling motor (41) when the driving load of the hulling motor (41) is below the set range.
The closing relay (78) is operated based on the output to reduce the hull gap (57) of the derolling rolls (3) and (4), and the dead zone setting comparator (in the appropriate drive load range of the motor (41). 73) (74) It is configured to control the removal rate based on the output.

Further, each of the comparators (73) (74) and (88) (89)
And a driver (79) (80) are connected between the driver and the driver (79) (80) to control the opening and closing relays (77) (78), and a de-automatic control driver (91) is provided to supply to the de-rolling (3) (4). The solar cell (64) is connected to its driver (91) through a hulling amount comparator (92) and an off delay circuit (93) that produce an output when the amount of hulled rice that is used is reduced below a set value, and the roll removal ( 3) At the end of hulling when the amount of paddy supplied to (4) is insufficient, etc., stop the control of each relay (77) (78) based on the output of each comparator (73) (74) and (88) (89) As shown in FIG. 3, the solar cell (94) is attached to the chute (32) provided in the hopper (2), and the solar cells (64) and (94) are installed in parallel to each other. Even when the solar cell (94) receives external light due to the loss of paddy inside, the relays (77) (78) are controlled. It is configured so as to stop.

As is clear from the above, a pair of derolling (3)
(4), a supply hopper (2) for supplying paddy between the rolls (3) and (4), a shutter (5) for opening and closing the outlet of the hopper (2), and the rolls (3) and (4). A deregulation device for a hulling machine, comprising a deregulation motor (7) which is a deregulation member for automatically controlling the desorption rate, wherein the shutter (5) is opened and the supply hopper (2) is reduced due to the depletion of the supply hopper (2). The solar cell (64), which is an illuminance detection member that detects external light entering from the inside, is provided inside the shutter (5), and the illuminance of the solar cell (64) is controlled by entering a predetermined amount of external light into the shutter (5). A rice hulling amount comparator (92) that is a stopping means for stopping the automatic control of the removal rate motor (7) based on the detection is provided, and the opening of the shutter (5) at the outlet of the supply hopper (2) is closed by the rice. Deroll when light is blocked 3) A sufficient amount of paddy is supplied to (4) and the removal rate motor (7) is automatically controlled properly, while paddy of the feed hopper (2) is reduced and external light is emitted from the opening of the shutter (5). However, the paddy supplied to the derolling rolls (3) and (4) will be insufficient when the invaders enter, but the paddy amount comparator (92) is activated by the detection of the external light entering the shutter (5) to remove the paddy. The automatic control of the rate motor (7) is stopped.

The present invention is configured as described above, and the hulling motor (4
This power (R, S, T) is applied to 1), the automatic switch (81) is turned on, and the paddy is put into the supply hopper (2) to start the hulling work. At the time of start, since the amount of slid rice that falls below the derolling rolls (3) and (4) is small, the drive load of the hulling motor (41) is also small,
The underload output comparator (89) is activated by the underload output of the current transformer (66), and the closing relay (78) is continuously excited based on the output of the comparator (89), and the relay (78) The removal rate motor (7) is operated via the relay switch (76) to reduce the hull gap (57).

The hulling motor (41) detected by the current transformer (66)
When the drive load of the motor exceeds the set value, the output of the current transformer (66) and the output of the reference derate ratio setting device (67) are compared by the derate ratio adjusting comparators (71) (72), and the load of the motor (41) is compared. When is higher than the setting, the opening relay (77) is energized via the comparators (71) (73) and the driver (79) to open the de-rate motor (7) to enlarge the paddy gap (57). On the other hand, when the load of the motor (41) is less than or equal to the setting,
The closing relay (78) is energized through the comparators (72) (74) and the driver (80), and the derating motor (7)
To reduce the hull gap (57).

Further, the return mixed rice taken out from the selection tube (23) of the selection section (21) through the chute (34) increases, and the return mixed rice joins the rice scraped off from the hulling section (1). When the mixed rice in the supply tank (26) to be charged increases, the excess mixed rice in the tank (26) will overflow into the overflow gutter (3
9) to return to the supply hopper (2), the gutter (3
Increase (decrease) in the amount of mixed rice that returns from 9) to the hopper (2)
The open / close valve (40) is opened (closed) in proportion to, and the supply valve (60) is closed (opened) in conjunction with the open / close valve (40) and supplied to the derolling rolls (3) (4). The amount of paddy produced is decreased (increased) and the amount of mixed rice in the sorting section (21) is kept substantially constant. However, as shown in FIG. When it changes, the drive load of the hulling motor (41) changes with respect to the reference de-rate, and at the same time, the de-rate control centering on the reference de-rate is performed on the load of the motor (41) with respect to the dead zone width (X). The width (A) (B) (C) changes.

Therefore, the amount of paddy supplied to the derolling rolls (3) and (4) is detected by the supply amount sensor (61), and the output of the current transformer (66) is output to the differential amplifier (68) based on the output of the sensor (61). The output of the reference rate remover setter (67) corrected by the sensor and applied to the rate remover comparators (71) and (72).
1) The output is corrected, and the motor (4) of the current transformer (66) is corrected by the paddy supply amount output of the supply amount sensor (61).
1) Comparing the load output and the standard output rate output of the setting device (67) by the comparators (71) (72), based on the load change of the motor (41) in a state substantially the same as the standard paddy supply amount. Detecting a change in the removal rate, regardless of changes in the amount of paddy supplied to the derolling rolls (3) and (4), high or low removal rate outputs are obtained from the comparators (71) and (72) as in the standard time.

Further, the dead zone of the dead zone setting comparators (73) (74) is corrected on the basis of the paddy feed rate output of the feed rate sensor (61), so that the derolling rolls (3) and (4) can be removed regardless of the change in the paddy feed rate. The control dead zone of the rate motor (7) is kept substantially constant, and the control error of the hulling gap (57) of the derolling rolls (3), (4) is kept substantially constant with respect to the reference removal rate.

Furthermore, by the correction operation of the supply amount sensor (61),
When the amount of paddy supplied to the derolling rolls (3) and (4) increases abnormally and the drive load of the paddy hull motor (41) exceeds the set value, the overload output of the current transformer (66) detects overload. The comparator (88) is activated and its comparator (88)
The open relay (77) is continuously excited based on the output,
The removal rate motor (7) is opened to expand the hull gap (57), and the above removal rate control is performed by changing the load of the motor (41) within a certain range.

In addition, when the paddy supply to the hopper (2) is interrupted, such as at the end of hulling work, a small amount of paddy flowing down from the hopper (5) causes a light emitting member (63) for the solar cell (64).
Even if the irradiation light of the solar cell is blocked, the solar cell (64) receives the external light from the outside of the shutter (5) and the solar cell (94) installed inside the hopper (2) is reduced due to the loss of paddy. Receiving light, and detecting the external light of at least one of the solar cells (64) (94), the comparator (9
The driver (91) is actuated after a lapse of a certain time via 2) to automatically stop the automatic removal rate control by the relays (77) (78).

"Effects of the Invention" As is clear from the above examples, according to the present invention, a pair of derolling rolls (3) and (4) and a supply hopper (2) for supplying paddy between the rolls (3) and (4), In the decontrolling device of a rice hulling machine, which comprises a shutter (5) for opening and closing the outlet of the hopper (2) and a deregulating member (7) for automatically controlling the dewetting ratio of the rolls (3), (4), the shutter ( 5) Open and supply hopper (2) due to depletion of supply hopper (2)
An illuminance detection member (64) for detecting the external light entering from the inside is provided inside the shutter (5), and the illuminance detection member (64) detects the illuminance based on the fact that external light above a predetermined level enters the shutter (5). The deregulation member (7) is provided with a stopping means (92) for stopping the automatic control, and the opening of the shutter (5) at the outlet of the supply hopper (2) is blocked by the paddy to prevent external light from entering. Deroll when (3)
A sufficient amount of paddy is supplied to (4), and the deregulating member (7)
While the automatic control is properly performed, when the paddy of the supply hopper (2) is reduced and external light enters from the opening of the shutter (5), the paddy supplied to the rolls (3) and (4) is insufficient. However, since the stopping means (92) is actuated by the detection of the external light entering the shutter (5) and the automatic control of the de-adjusting member (7) is stopped, the de-adjusting member (7) is depleted when the paddy is insufficient. You can reliably prevent automatic control,
Derolling performed by continuing the automatic control (3)
It is possible to easily prevent the skidding operation of (4) and remove it (3)
It is possible to more easily reduce the abrasion damage or the occurrence of broken rice / skinned rice of (4) as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of a hull portion showing an embodiment of the present invention,
2 is an overall view of the huller, FIG. 3 is a front view of the same section, and FIG.
FIG. 5 is an enlarged cross-sectional side view, FIG. 5 is an explanatory view of a hulling section, FIG. 6 is a hulling control circuit diagram, and FIG. 7 is a load sensor output diagram. (2) …… Supply hopper (3) (4) …… Derolling (5) …… Shutter (7) …… Derating motor (deadjusting member) (64) …… Solar cell (illuminance detecting member) (92 ) …… Hulling amount comparator (stopping means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiro Morimoto 1-32, Chayamachi, Kita-ku, Osaka City, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (56) Reference JP-A-57-91750 (JP, A)

Claims (1)

[Claims] 1. A pair of derolling rolls (3) (4) and a feeding hopper (2) for feeding paddy between the rolls (3) (4).
And a shutter (5) for opening and closing the outlet of the hopper (2)
And a deregulation device for a huller equipped with a deregulation member (7) for automatically controlling the desorption rate of the rolls (3) and (4), wherein the shutter (5) is opened and the depletion of the supply hopper (2) is reduced. The illuminance detecting member (64) for detecting the external light entering from the supply hopper (2) is provided inside the shutter (5), and the illuminance detecting member (64) is provided by the external light more than a predetermined amount entering the shutter (5). ) A decontrolling device for a hulling machine, which is provided with a stopping means (92) for stopping the automatic control of the deregulating member (7) based on the illuminance detection.