JPH0817949B2 - 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, there is a technique for controlling the removal rate of a hulling machine by detecting the load of the hulling motor and the amount of paddy supply, that is, the opening of a supply valve (for example, JP-A-58-17845). .

"Problems to be solved by the invention" However, the opening of the supply valve is constant due to various factors such as the variety of paddy, the water content and the amount of scraped rice and return mixed rice returned to the supply hopper. However, since the amount of paddy supplied by the valve opening and the amount of paddy actually supplied to the derolling are largely different, there is a problem that the desorption rate cannot be kept constant.

"Means for Solving Problems" However, the present invention provides a load sensor that detects the load of the hulling motor that drives the derolling, and in a device that controls the derate adjusting member based on the sensor output, A flow rate sensor for detecting the flow rate of paddy supplied to the derolling and a paddy supply amount adjusting member for changing the paddy flow rate to be supplied to the derolling are provided, and automatic control of the paddy supply amount adjusting member is performed based on the detection result of the flow sensor. After being performed and adjusted to a predetermined paddy flow rate, the removal rate adjusting member is automatically controlled based on the detection result of the load sensor.

Therefore, since the amount of paddy supplied to the derolling roll is kept at a predetermined amount to correct the stripping rate, it is possible to eliminate the conventional problem that the stripping rate adjusting member malfunctions due to changes in the paddy supply amount. It is possible to properly perform the automatic control of the load sensor and the removal rate adjusting member that maintain the removal rate substantially constant, and to easily perform the stable and highly accurate removal control as compared with the related art.

[Examples] Examples of the present invention will be described in detail below with reference to the drawings. First
FIG. 1 is a hulling control circuit diagram, FIG. 2 is a general view of a hulling machine, and FIG. 3 is a sectional view of the hulling machine. In the figure, (1) is a hulled part, and (2)
Is a supply hopper for throwing in the paddy, (3) and (4) are a pair of derollers that are provided opposite the lower part of the hopper (2), (5) is a shutter that opens and closes the lower part of the hopper (2), and (6) is the above The rolls (3) and (4) are unfolded by a manual operation to unfold the rolls (7), and the rolls (3) and (4) are de-adjustment members that are de-adjustment members that adjust the distance between them.

In the figure, (8) is a wind-selecting section on which the hulling section (1) is mounted, and removes small rice from brown rice removing gutter (9) and brown rice conveyor (10) and brown rice falling on the gutter (9). Karato (11)
And the derolling rolls (3) (4) through the small rice pick-up gutter (12) and the small rice conveyor (13) that carry the small rice out of the machine, and the grain scattering plate (14) and the flow grain plate (15). Sliding-off rice removal gutter (16) and sliding-off rice conveyor (17) facing down and receiving scraped-off rice (brown rice and paddy); A rice porridge conveyor (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 a sorting section that is placed on the wind selecting section (8) and is installed in parallel with the hulling section (1). As shown in FIG.
Upper and lower sorting cylinders (22) and (23) for continuous rotation in one direction to separate brown rice and paddy, and bearing rolls (24) for supporting the cylinders (22) and (23) rotatably, respectively (25) )…When,
A mixed rice supply tank (26) provided outside one end of the upper sorting cylinder (22), a supply conveyor (27), a re-graining conveyor (28), and a brown rice receiving conveyor (29) inserted in the upper sorting cylinder (22). , A brown rice receiving conveyor (30) to be inserted into the lower sorting tube (23), a rice sorting machine (31) provided between the upper and lower brown rice receiving conveyors (29) (30) and connected in series, and an upper sorting tube The chute (32) for communicating the paddy discharge end of (22) with the hopper (2) and the re-graining conveyor (28) are connected to the lower sorting cylinder (23).
To the rice picking gutter (16) by sliding down the mixed rice discharge end of the lower sorting tube (23) to the rice picking gutter (16), and the brown rice receiving conveyor (30) to the brown rice picking gutter (9). ) Is connected to the chute (35).

Then, the brown rice field conveyor (36) having the lower end communicating with the brown rice conveyor (10), and the scraped rice conveyor (1
The sorting rice field upper conveyor (37) that communicates the lower end side to 7) is installed upright along the outside of this machine, and the upper end of the sorting rice lifting conveyor (37) is connected to the supply tank (26). The pipe (38) communicates with each other, and the scraped rice from the paddy hull (1) and the return mixed rice from the sorting cylinder (23) are combined and put into the supply tank (26). .

Further, an overflow gutter (39) is provided so that the upper end side communicates with the supply tank (26) and the lower end side faces the upper surface of the supply hopper (2), and excess mixed rice in the supply tank (26) is removed from the overflow gutter. It is configured to return to the supply hopper (2) via (39).

Further, a hulling motor (40) for driving the hulling section (1), the wind selecting section (8) and the sorting section (21) is provided, and the derolling rolls (3) and (4) are driven by the hulling motor (40). It is configured to drive.

FIG. 5 is an explanatory view of the hulling portion (1), and the support shaft (41)
The derolling rolls (3) and (4) axially supported by the (42) are internally provided so as to face the hulling case (43), and the supporting shafts (41) and (42) are provided.
The transmission gears (44) and (45) are pivotally supported by the gear case (46) provided in the hulling case (43).
4) Put (45) inside the case (46). The drive gears (49) and (50) are axially supported in the case (46) through the power shafts (47) and (48), and the gears (44) (45) and (49) are supported.
(50) is always meshed, and the supporting shaft (42) of one of the derolling rolls (4) is supported in the middle of the gap adjusting link (51), and one end of the link (52) is connected to one of the power shafts (48). )
It is supported on the same axis. A clearance adjusting shaft (54) interlockingly connected to the removal ratio motor (7) via gears (52) (53) is provided, and the shaft () is provided at the other end of the link (51) via a bearing member (55). 54) The screw part (54a) at one end is screwed and connected, and the hull gap (56) 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 (57) is attached to the other end of the shaft (54), and the paddy gap (56) is manually enlarged or reduced by rotating the handle (57). .

Further, a feeding roll (58) provided above the derolling rolls (3) and (4) and below the shutter (5) to drop the paddy from the supply hopper (2) between the rolls (3) and (4).
A moving valve (62) provided with a supply valve (59) for adjusting the amount of paddy dropped from the feeding roll (58), and screwed onto the rotary screw shaft (61) of the motor (60) on the lower surface of the valve (59). Abutting against each other, the supply valve (59) is driven by forward and reverse driving of the motor (60).
Is configured to be adjusted appropriately.

As shown in FIG. 1, a current sensor (63) which is a load sensor for detecting a drive load of the hulling motor (40) and the derolling (3) which is a reference value of the sensor (63).
Dropout rate setting device (64) that sets the pullout rate reference value of (4)
And the flow rate of the paddy supplied to the rolls (3) and (4) between the shutter (5) and the supply valve (59) inside the paddy case (43) in which the rolls (3) and (4) are installed. A flow rate sensor (65) for detecting changes in (velocity) and an efficiency setting device (66) for setting the efficiency reference value of the derolling (3) (4) which is the reference value of this sensor (65) are provided. Each of the sensors (6
3) (65) and each setting device (64) (66) are input-connected, and the drive circuit (68) is connected to the control circuit (67).
The removal rate motor (7) and supply valve motor (6
0) output connection, current sensor (63) and flow sensor (6
Based on the output of 5), the removal rate motor (7) is controlled to be forward / reverse driven, the removal rate of the removal rolls (3) and (4) is automatically adjusted, and it is supplied based on the output of the flow rate sensor (65). Roll control (3) by controlling the forward and reverse drive of the quantity motor (60)
The amount of paddy supplied to (4) is automatically adjusted.

As is clear from the above, the current sensor (63), which is a load sensor for detecting the load of the hulling motor (40) that drives the derolling (3) (4), is provided, and based on the output of this sensor (63). In a device that controls a removal rate motor (7) that is a removal rate adjustment member, a flow rate sensor (65) that detects the flow rate of the paddy supplied to the removal rolls (3) and (4), and the removal rolls (3) and (4). A supply valve motor (60), which is a paddy supply amount adjusting member for changing the flow rate of paddy supplied to the paddy, is provided, and the supply valve motor (60) is automatically controlled on the basis of the detection result of the flow rate sensor (65). After the flow rate is adjusted, the removal rate motor (7) is automatically controlled based on the detection result of the current sensor (63).

This embodiment is configured as described above, and as shown in the flow chart of FIG. 6, during the hulling operation, the flow rate sensor (65)
Detects the flow rate of paddy supplied to the paddy hopper (2) by
The output value of this sensor (65) is compared with the efficiency reference value, and the paddy flow rate (flow velocity) is determined by the type of paddy, the water content, and the amount of scraped rice and returned mixed rice that are returned to the supply hopper (26).
Change and the output value of the sensor (65) becomes larger than the efficiency reference value, the supply amount motor (60) is operated to control the supply valve (59) to close, while When the output value of the sensor (65) becomes small, the motor (6
0) is operated to control the opening of the supply valve (59), and the flow rate of the paddy supplied to the derolling rolls (3) and (4) is maintained substantially constant.

Then, the hulling motor (40) is driven by the current sensor (63).
The drive load current value is detected, and the flow rate sensor (6
When the output value of 5) is maintained constant, the current sensor (6
The output value of 3) is compared with the removal rate reference value, and when the load current value becomes smaller than the reference value due to wear of the removal rolls (3) and (4), the removal rate motor (7) is activated. While controlling the grain hull gap (56) to reduce the drop rate,
When the load current value becomes larger than the reference value due to an increase in brown rice that is reduced to the derolling (3) (4), the motor (7) is operated to expand and control the hull gap (56), Prevents generation of scrapped rice due to uneven skin or rice cracking.
Further, by adjusting the valve opening of the supply valve (59), erroneous detection of the current sensor (63) due to an increase or decrease in the amount of paddy supplied to the derolling (3) (4) is prevented, and an appropriate derolling (3) is performed.
The gap control of (4) can be stably performed during the hulling operation.

"Effects of the Invention" As is apparent from the above embodiments, the present invention is provided with the load sensor (63) for detecting the load of the hulling motor (40) that drives the derolling rolls (3) and (4). 63) A device for controlling the removal rate adjusting member (7) based on the output, a flow rate sensor (65) for detecting the flow rate of the paddy supplied to the removal rolls (3) (4), and the removal rolls (3) (4). ) Is provided with a paddy feed rate adjusting member (60) for changing the paddy feed rate, and the paddy feed rate adjusting member (60) is automatically controlled on the basis of the detection result of the flow rate sensor (65) to bring the paddy flow rate to a predetermined paddy flow rate. After being adjusted, it is configured to automatically control the removal rate adjusting member (7) based on the detection result of the load sensor (63). The amount of paddy that is controlled and supplied to the removal rolls (3) and (4). Since the removal rate is corrected by maintaining a predetermined amount, the removal rate adjusting member (7 It is possible to eliminate the conventional malfunction of malfunctioning, and to properly perform automatic control of the load sensor (63) and the removal rate adjusting member (7) that maintain the removal rates of the removal rolls (3) and (4) substantially constant. Therefore, it is possible to easily perform highly accurate and stable de-control as compared with the related art.

[Brief description of drawings]

FIG. 1 is a hulling control circuit diagram showing an embodiment of the present invention, and FIG.
FIG. 3 is an overall view of a hulling machine, FIG. 3 is a front view of the same section, FIG. 4 is a side view of the same section, FIG. 5 is an enlarged cross-sectional view of a hulling section, and FIG. 6 is a flowchart of a decontrolling circuit. . (3) (4) …… Derolling (7) …… Deratement motor (deratement adjusting member) (40) …… Hulling motor (63) …… Current sensor (load sensor) (65) …… Flow rate sensor

Claims (1)

[Claims] 1. A load sensor (63) for detecting a load of a hulling motor (40) for driving a derolling (3) (4),
The removal rate adjusting member (7) based on the output of this sensor (63)
Flow rate sensor (65) that detects the flow rate of paddy supplied to the derolling rolls (3) and (4), and the amount of paddy supply that changes the paddy flow rate to be supplied to the derolling rolls (3) and (4). The member (60) is provided, and the paddy supply amount adjusting member (60) is automatically controlled based on the detection result of the flow rate sensor (65) to adjust to a predetermined paddy flow rate, and then the detection result of the load sensor (63). A decontrolling apparatus for a hulling machine, characterized in that it is configured to automatically control a dewetting rate adjusting member (7) based on the above.