JPH0817950B2 - Dehulling rate control method for huller - Google Patents

Description

TECHNICAL FIELD The present invention relates to a hulling machine that separates and removes unhulled rice into brown rice and hulls by a pair of derolling, and a hull that detects the presence or absence of hulls supplied to the derolling. The present invention relates to a removal rate control method including a sensor, a supply valve that adjusts a supply amount of paddy that is supplied to the derolling, and a roll gap adjusting element that adjusts a gap of the derolling.

"Prior Art" A means for maintaining a constant removal rate by detecting a change in the driving load of the derolling and adjusting the roll gap so that the driving load matches the reference load. -When the roll drive load changes due to a change in the valve opening and the detected roll drive load fluctuates over a certain period and continues for a predetermined period of time or more, the drive load is stored as a new reference value. After that, there is a system in which the roll gap control is performed based on this reference value.

“Problems to be solved by the invention” In the case of such means, the driving load stored in the data as a new reference value is erased when the operation is stopped midway and the power is turned off. Therefore, there is a problem that the reference at the time of restart is deviated and the roll gap is changed, so that proper removal rate control cannot be performed.

"Means for solving the problem" However, the present invention, a paddy sensor for detecting the presence or absence of paddy supplied to the derolling, a supply valve for adjusting the supply amount of the paddy supplied to the derolling, In a removal rate control method of a huller provided with a roll clearance adjusting element for adjusting the clearance of the removal roll, a removal rate control means for adjusting the roll clearance in response to a change in valve opening of the supply valve is provided, The roll gap of the paddy sensor when the paddy is not detected is returned to the reference roll gap at the reference valve opening, and the roll gap is adjusted from the padding detection reference roll gap of the paddy sensor at restart. .

[Operation] Therefore, according to the present invention, when the work is resumed after the power is turned off, the reference roll gap at the reference valve opening is always adjusted to an appropriate roll gap according to the valve opening at the time of restarting the work. For example, even if the valve opening is changed when the power is turned off, the roll interval can be appropriately adjusted to the valve opening at the time of restart without relying on the stored data before turning off the power. Therefore, the roll gap correction for the purpose of controlling the equalization ratio when the valve opening is changed can be performed without malfunction, and since it does not depend on the data stored and stored, the power supply There is no need for a device for storing and storing data at the time of turning off, the structure is extremely simple, and accurate and accurate constant removal rate control is performed.

[Examples] Examples of the present invention will be described in detail below with reference to the drawings. First
The figure is a partial explanatory view of the hulling portion, and FIG. 2 is an overall sectional view of the hulling machine. In the figure, (1) is a paddy hull part, (2) is a supply hopper for loading paddy, (3) and (4) are a pair of derollers that are provided opposite to the lower part of the hopper (2), and (5) is the above A shutter for opening and closing the lower part of the hopper (2), (6) a deployment lever for emergency opening of the rolls (3), (4) by manual operation, and (7) for adjusting contact and separation of the rolls (3), (4). It is a removal rate motor that is a roll gap adjusting element.

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.

Further, (21) in the figure is a sorting section which is placed on the wind selecting section (8) and is installed in parallel with the hulling section (1), and as shown in FIG. 3, the brown rice is continuously rotated in one direction. Upper and lower sorting cylinders (22) and (23) for separating rice and paddy, and bearing rolls (24) that support the cylinders (22) and (23) rotatably, respectively (25) ...
And a mixed rice supply tank (26) provided outside one end of the upper selection cylinder (22), a supply conveyor (27), a re-graining conveyor (28) and a brown rice receiving conveyor (29) inserted in the upper selection cylinder (22). ), A brown rice receiving conveyor (30) inserted in the lower sorting cylinder (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 portion. The chute (32) for communicating the paddy discharge end of the sorting cylinder (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, a brown rice lifting conveyor (36) for communicating the lower end side with the brown rice conveyor (10) and the scraped rice conveyor (1
The sorting rice lifting conveyor (37), which communicates the lower end side to 7), is erected 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, a hulling motor (39) for driving the hulling part (1), the wind selecting part (8) and the sorting part (21) is provided, and the rolls (3) and (4) are removed by the hulling motor (39). It is configured to drive.

As shown in FIG. 1, the derolling rolls (3) and (4) are arranged in a hulling case (41) communicating with the lower part of the paddy discharge port (40) of the supply hopper (2). (42)
The derolling rolls (3) and (4) axially supported on (43) face each other, and the transmission gears (44) and (45) are attached to the support shafts (42) and (43).
And a gear case (46) is provided in the hulling case (41), and the gears (44) (45) are internally provided in the case (46). Further, drive gears (48) (50) are axially supported in the case (46) through the power shafts (47) (48),
The gears (44) (45) and (49) (50) are always meshed with each other, and the support shaft (43) of one of the derolling rolls (4) is pivotally supported in the middle of the gap adjusting link (51). (51)
One end is supported on the same axis as the one power shaft (48). Then, gears (52) (53) are attached to the removal ratio motor (7).
A gap adjusting shaft (54) that is interlockingly connected via
Each roll that connects the other end of the link (51) with the screw part (54a) at one end of the shaft (54) through the bearing member (55) and controls the motor (7) to feed the paddy. (3) The roll gap (56) of (4) is automatically enlarged or reduced, and a removal rate adjusting handle (57) is attached to the other end of the shaft (54), and the roll is rotated by rotating the handle (57). The gap (56) is configured to be manually scaled.

Further, a supply valve (58) for adjusting the flow rate of the paddy below the paddy discharge port (40), a feeding roll (59) for feeding paddy to the rolls (3) and (4), and the rolls (3) and (4). A photoelectric type paddy sensor (60) for detecting the presence or absence of paddy supplied to the
The opening of the supply valve (58) is adjusted by the adjusting bolt (61), and the opening of the valve (58) is detected by the potentiometer-type valve opening sensor (62).

As shown in FIG. 4, the paddy sensor (60), the valve opening sensor (62), and a reference valve opening setting device (63) for setting a reference valve opening which is a reference value of the sensor (62). And a removal rate control circuit (64) which is a removal rate control means for connecting and
The control circuit (64) is connected to the removal rate motor (7) through a forward / reverse drive circuit (65), and the paddy sensor (60) is connected.
When the paddy is detected, the valve opening detection value (A2) detected by the sensor (62) with respect to the reference valve opening (A1) set by the setting device (63) changes, As shown in the figure, based on the data representing the relationship between the valve opening and the roll gap stored in the control circuit (64) in advance, the deregulation is performed so that the roll gap (56) is corrected by a certain amount (α) according to the change. The rate motor (7) is driven to control the roll gap (56).

As is clear from the above, the paddy sensor (60) for detecting the presence or absence of paddy supplied to the derolling (3) and (4), and the supply amount of the paddy supplied to the derolling (3) and (4). In the method for controlling the removal rate of a rice hulling machine, which is provided with a supply valve (58) for adjustment and a removal rate motor (7) which is a roll clearance adjusting element for adjusting the clearance of the removal rolls (3), (4), A control circuit (64) which is a removal rate control means for adjusting the roll gap (56) according to the change in the valve opening of the supply valve (58).
Is provided to return the roll gap (56) of the paddy sensor (60) when the paddy is not detected to the reference roll gap (B) at the reference valve opening (A1), and to detect the paddy of the paddy sensor (60) at restart. The roll gap (56) is adjusted from the time reference roll gap (B).

This embodiment is constructed as described above, and the sixth embodiment will be described below.
The operation will be described with reference to the flowchart in the figure.

At the time of removing work, the removing rolls (3) and (4) are adjusted to the roll gap (56) corresponding to the reference valve opening (A1) set by the setting device (63), and the removing work is performed thereafter. When the reference valve opening (A1) is 4, the roll gap (56) is adjusted to the reference roll gap B. Then, the valve opening (A) detected by the valve opening sensor (62) is detected at regular intervals during de-working when the paddy sensor (60) is on (paddy detection).
When 2) remains unchanged compared to the previous detection, the work is continued without controlling the roll gap (56), and when it changes compared to the previous detection, the reference valve opening (A1)
The roll gap (56) is corrected by the difference (A1-A2) with respect to. That is, in the case of this embodiment, ± 0.5 for the valve opening change difference of 0.5
The α roll gap (56) is corrected, and when the currently detected valve opening (A2) is 3, the reference valve opening (A1) is 4 and the difference (4-3 = 1) is corrected. + 2α is performed and the roll gap (56) is adjusted to B + 2α and the valve opening (A2)
When is changed to 5, correction-2α is performed and the roll gap (56) is adjusted to B-2α.

When the paddy sensor (60) does not detect paddy due to the loss of paddy in the hopper (2) or the closing of the shutter (5), the valve opening (A2) is 3 or Even when there is a change from 5, such as 5, the reference valve opening (A1), all are returned to the reference roll gap B at the reference valve opening (A1), and the work is started by turning on the paddy sensor (60) again. When restarted, the roll gap (56) corresponding to the difference between the detected value (A2) detected after restart and the reference valve opening (A1) is corrected and the work is restarted.

In this way, when the work is restarted after turning off the paddy sensor (60), the roll gap (56) is newly corrected from the reference state. Therefore, when the paddy sensor (60) is turned off, the power is cut off. Even when the data accumulated at the time of entry disappears, the roll gap (5
It is corrected to 6) and proper removal rate control is performed thereafter.

"Effects of the Invention" As is apparent from the above-described embodiments, the present invention is based on the paddy sensor (60) for detecting the presence of paddy supplied to the derolling rolls (3) and (4), and the derolling rolls (3) and (4). ), A removal rate of a huller provided with a supply valve (58) for adjusting the supply amount of the paddy supplied to the), and a roll gap adjusting element (7) for adjusting the gap between the derollers (3) and (4). In the control method, a de-ratio control means (64) for adjusting the roll gap (56) in accordance with a change in the valve opening of the supply valve (58) is provided, and the pad gap of the paddy sensor (60) when the paddy is not detected. (56) is returned to the reference roll gap (B) at the reference valve opening (A1), and the roll gap (56) is adjusted from the reference roll gap (B) at the time of paddy detection of the paddy sensor (60) at restart. When the power of the paddy sensor (60) is not detected, the padding sensor (60) is stored and accumulated in the control means (64) or the like. Regardless of the disappearance of data etc., regardless of these, the roll gap (56) is properly corrected based on the change with the reference valve opening (A1) at the time of work restart without malfunction, and it is accurate after restarting without any problem. It is possible to perform a constant control of the removal rate, and it is possible to form a very simple effect without the need for a holding device for storing and holding data accumulated when the power is turned off.

[Brief description of drawings]

FIG. 1 is a partial explanatory view of a hulling portion, FIG. 2 is an overall cross-sectional view of a hulling machine, FIG. 3 is a side view of the hulling machine, FIG. 4 is a control circuit diagram, and FIG. FIG. 6 is a flow chart showing the relationship between the gaps. (3) (4) …… Derolling (7) …… Roll gap adjusting element (56) …… Roll gap (58) …… Supply valve (60) …… Paddy sensor (64) …… Desorption rate control means ( A1) …… Reference valve opening

Claims (1)

[Claims] 1. A paddy sensor (60) for detecting the presence or absence of paddy supplied to the derolling rolls (3) and (4), and adjusting the amount of paddy supplied to the derolling rolls (3) and (4). A method of controlling the removal rate of a hulling machine, comprising a supply valve (58) and a roll gap adjusting element (7) for adjusting the gap between the derolling rolls (3) and (4), the valve of the supply valve (58) A de-rate control means (64) for adjusting the roll gap (56) according to the change in opening is provided, and the roll gap (56) of the paddy sensor (60) when the paddy is not detected is set at the reference valve opening (A1). Return to the standard roll gap (B), and restart the paddy sensor (60).
Roll gap (56) from reference roll gap (B) when detecting paddy
A method for controlling the rate of removal of a grain huller, which is characterized in that: