JPS6359357A - Gluten removing controller for rice huller - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a deweighing control device for a rice huller that separates and takes out rice into brown rice and rice husks using a pair of deweighing rolls.

``Prior Art'' As a means for detecting changes in the decapsulation rate, there is a means for detecting changes in the driving load of the decapsulation roll.

A method of detecting a change in the drive load of a roll drive motor based on a change in the current value of the roll drive motor is generally known.

[Problem to be solved by the invention] However, in the case based on the current value change as described above, whenever the voltage changes, 1! Since the flow value also changes accordingly, there is a drawback of lack of accuracy.

For this reason, there is a method that uses a program to correct the voltage to the current, but it has the disadvantage that the same circuit cannot be applied to all models due to the motor characteristics, not to mention the complicated adjustment.

"Means for solving the problem" Therefore, the present invention includes a current sensor that detects the load current of a hulling motor that drives a deweighing roll, and a voltage sensor that detects a voltage change of the hulling motor, The apparatus is configured to detect a change in the deweighing rate based on a relative change in the detected values of the current and voltage sensors detected at regular intervals.

"Function" According to the present invention, the changing state of the driving load is detected based only on the change in current without being affected by voltage fluctuations, so the detection performance is good, and Since it is based on the relative value of the current and voltage sensors to be detected, the circuit structure is simple and does not require any adjustment, and the same circuit can be used regardless of various motor characteristics, resulting in excellent responsiveness.

"Example" Embodiments of the present invention will be described in detail below based on the drawings.

Fig. 1 is a control circuit diagram using current and voltage sensors, Fig. 2 is an overall view of the huller, and Fig. 3 is a sectional view thereof. In the figure (1
) is a hulling section, (2) is a supply hopper into which paddy is input, (3) and (4) are a pair of de-frame rolls installed opposite to each other at the bottom of the hopper (2), and (5) is the hopper (2). ) A shutter that opens and closes the lower part, (6) a deployment lever that manually opens each of the rolls (3) and (4) in an emergency manner, and (7) a frame removal rate that adjusts the approach and separation of the rolls (3) and (4). It's a motor.

In the figure, (8) is a winnowing section on which the hulling section (1) is placed, which removes small rice from the brown rice that falls into the brown rice take-out gutter (9) and the brown rice conveyor (10), as well as the gutter (9). Karakin (11)
) and the rice removal gutter (12) that carries the rice out of the machine.
and the milling rolls (3) (4) via the rice conveyor (13), the grain scattering plate (14), and the grain flow plate (15).
A scraped rice takeout gutter (18) facing downward to receive the scraped rice (brown rice and paddy), a scraped rice conveyor (17), and a slight increase feeder (18) for receiving the rice separated from the scraped rice.
It also includes a stub conveyor (19), and a dust suction/discharge fan (20) for discharging the rice husks separated from the scraped rice to the outside of the machine.

In addition, (21) in the figure is a sorting part placed on top of the wind sorting part (8) and installed in parallel with the hulling part (1), and as shown in Fig. 4, it continuously rotates in one direction to remove brown rice. Upper and lower sorting tubes (22) (23) for separating rice and paddy, and the above-mentioned parts (22) (2
3) supporting rolls (24) that rotatably support each
...(25)..., a mixed rice supply tank (26) provided outside one end of the upper sorting tube (22), and an upper sorting tube (22).
2), a supply conveyor (27), a re-sorting grain conveyor (28), a brown rice receiving conveyor (29), a brown rice receiving conveyor (30) inserted in the lower sorting cylinder (23), and an upper and lower brown rice receiving conveyor. (29) and (30) a rice sorter II (31) which connects them in series and a shoe which communicates the paddy discharge end of the upper sorting tube (22) with the hopper (2)) (3
2), and the re-sorting grain conveyor (28) is connected to the lower sorting cylinder (23).
A chute (33) that communicates with the lower sorting tube (23)
A chute (34) that slides down the mixed rice discharge end of the machine and connects it to the rice take-out gutter (1B), and a nut (35) that connects the brown rice receiving conveyor (30) to the brown rice take-out gutter (9).

And a brown rice lifting conveyor (36) whose lower end side communicates with the brown rice conveyor (lO), and a brown rice lifting conveyor (36) that communicates with the brown rice conveyor (lO),
Sorting rice lifting conveyor (37) whose lower end side communicates with 17)
) is set upright along the outside of the machine, and the upper end of the sorting rice lifting conveyor (37) is communicated with the supply tank (2B) through a connecting pipe (38).
The scraped rice from 1) and the returned mixed rice from the sorting tube (23) are combined and charged into the supply tank (26).

Furthermore, the hulling section (1), wind sorting section (8) and sorting section (2)
1) is provided, and the de-weighing rolls (3) and (4) are driven by the hulling motor (40).

As shown in FIG. 1, the bung rolls (3) and (4) are disposed within a hulling case (41) that communicates with the lower part of the paddy discharge port (40) of the supply hopper (2). Axis (42
) (43), respectively.
) facing each other, and a transmission gear (4
4) (45) is pivotally supported, and the rice hulling case (4) is
1) is provided with a gear case (46), and the gear (44) (
45) is installed inside the case (46). Further, drive gears (49) (50) are pivotally supported in the case (46) via power shafts (47) (4B), and each gear (44) (45
), (49) and (50) are always meshed, and the spindle (43) of one of the scale removal rolls (4) is pivotally supported in the middle of the gap adjustment link (51), and one end of the link (51) is connected to one side. The power shaft (48) is supported coaxially with the power shaft (48). and a gap adjustment shaft (54) interlockingly connected to the frame removal rate motor (7) via gears (52) and (53);
The threaded portion (54a) at one end of the link (51) is connected to the other end of the link (51) via a bearing member (55) by screwing, and the paddy is input by controlling the forward and reverse rotation of the motor (7). (54) while automatically adjusting the roll gap (56) of the rolls (3) and (4);
A frame removal rate adjustment handle (57) is attached to the other end, and the roll gap (56) is configured to be manually enlarged or reduced by rotating the handle (57).

Further, there is a paddy flow rate control valve (58) which is a supply valve for regulating the paddy flow rate below the paddy discharge port (40), and a paddy flow rate control valve (58) that is a supply valve that adjusts the paddy flow rate below the paddy discharge port (40),
4) and a feed-out roll (59) for supplying paddy, and the opening degree W1 of the control valve (58)! i to 81 bolts (60)
In addition, the opening state of the valve (58) is detected by a potentiometer (61).

As shown in FIG. 1, it is equipped with a current value sensor (62) such as a current variable base for detecting the load f flow of the rice hulling motor (38),
A current sensor (62) detects a current change in the power source (R, S, T) of the motor (39) that is proportional to a change in the driving load of the de-frame roll (3) (4), and the de-frame roll (3)
(4) The change in the unframed rate due to the change in the roll gap (56) is detected based on the load current output of the current sensor (62).

It is also equipped with a voltage sensor (63) for detecting voltage changes in the power sources (R, S, T) of the hulling motor (39), and has a timer function and a control circuit (
The respective sensors (82) (E13) are input connected to the control circuit (64), and the drive circuit (8) is connected to the control circuit (64).
5) A notification device consisting of a buzzer, display, etc.
66) is configured to be connected as an output.

The present embodiment is constructed as described above, and its operation will be explained below with reference to the flowchart of FIG. 6 and the sensor output diagram of FIG. 7. When the roll gap (56) is initially set and the hulling work starts, the control circuit (B4) receives the current value (A) detected by the current sensor (B2) and the voltage sensor (63).
and voltage value (V) are input at fixed time intervals (T), stored and programmed sequentially, and during this process, the same voltage value (Va) as the input voltage value (Va) is If it is in the input program data, the current TL current (iQ (Ab)) and the previous previous current value (Aa) are compared, and the difference (X+) is calculated as the elapsed time (Tb) of the current time and the previous current value (Aa). The difference in the elapsed time (Ta) of the ratio (Y+
) and the decrease in current value per hour (ΔA
) (ΔA = x'/Y l ) is calculated.

From this amount of decrease in current value per hour (△A), the amount of decrease in current value (A) (△p, x Tb) from the start of hulling work to the current time (Tb) is calculated, and that value is used as the standard. In this case, the alarm device (6B) is activated. In addition, when the value exceeds this standard, the control motor changes the current value (Ao) (voltage value (Vo)) set at the start of hulling work.
) The frame-removing rolls (3) and (4) are controlled to be closed.

On the other hand, if the same voltage value (va) at the current measurement time (Tb) is not found in the previous data, and another voltage value (Vb) exists before, then the previous and next current values (Ac)
(Ad) is compared, and the difference (×2) is calculated for each elapsed time (
Td) (Tc) is divided by the difference (Y2) to calculate the amount of decrease in the current value (ΔA) (ΔA=×2/Y2) in the same manner as described above.

The table below shows an example of this program.

□□----] 1 yo or less margin In other words, as shown in the table above, the control circuit (64) receives each cent t every certain period of time (tl, b,...).
(82) (E13) ,! -LJ ノ'm Positive value (V
+ , V2,...) and ili current values (A+, A
2,...) are read and stored. For example, at current time t3, the current value A3 is the same voltage value v2.
and current value A2 at time t2, and t4
Alternatively, in the case of current value A4 or A5 at t5, the amount of decrease in current value (A) per hour between the current value A2 at time t2 (
ΔA) is calculated. In this case, the previous data to be compared uses the value closest to the printing start time to eliminate errors.

For example, at time t5, the amount of current value decrease per hour (ΔA
) = A2 - As, the decrease in the electric a value from the beginning of printing 5 - t2 Or, when the voltage value (vl) changes as in tl, the current at time t1 of the same voltage value (vl) previously stored When the amount of decrease in current value per hour (ΔA) is included between the value AI and these current values A6 or AI,
If there is no data before that time, work continues based on the amount of decrease before that time. In other words, this time is t11
In the case of , the time tl when the voltage value v2 is the same before that
The amount of decrease in current value per hour (ΔA) is calculated between the current value AIO and A2 at o and t2 (ΔA=A2 A
Then, when the current tto from the start of printing is 2, the roller 5ft (613) is activated, and in this state, the roll gap (56) is adjusted to the initial state again. In this way, the unframed state is detected by the change in current value (A) between the same voltage values (V), so the voltage value (
Variations in current value (A) due to variations in voltage (v) are eliminated, and malfunctions can be prevented.

Furthermore, even when the opening degree of the normal valve (58) is constant, the actual supply amount varies slightly depending on the degree of dryness and variety of paddy, and the driving load of the dehulling rolls (3) and (4) also changes accordingly. Even in such a state, errors can be suppressed to a minimum and accurate values can be detected by using program data for each lapse of time (T).

In this way, the current value (A) input every time (T) passes
Based on the stored program data of voltage values (V) and voltage values (V), it is possible to detect the driving load mainly due to the wear of the dehulling rolls (3) and (4), and a new program is created every time the hulling work starts. It is highly adaptable because each program is created in accordance with various types of work.

"Effects of the Invention" As is clear from the above embodiments, the present invention includes a current sensor (62) that detects the load current of the hulling motor (39) that drives the dehulling rolls (3) and (4); Husking motor (3
9) and a voltage sensor (63) that detects the voltage change, and the current and voltage sensor (82) that detects at regular intervals.
) (83), the state of change in the frame removal rate is detected based on the change in the driving load, that is, the frame removal rate, based only on the change in current without being affected by voltage fluctuations. The detection performance is good because it detects
The sensors (62) (63) detect at regular intervals.
Since it is based on the relative value of , the circuit structure is simple and does not require adjustment, and it has remarkable effects such as the same circuit can be used regardless of various motor characteristics.

[Brief explanation of the drawing]

Fig. 1 is a control circuit diagram showing one embodiment of the present invention, Fig. 2 is an overall view of the rice huller, Fig. 3 is a cross-sectional front view of the same, Fig. 4 is a cross-sectional side view of the same, and Fig. 5 is a paddy hulling machine. FIG. 6 is an enlarged sectional view of the sliding portion, FIG. 6 is a flowchart, and FIG. 7 is an output diagram of the sensor. (3) (4)... Framing roll (39)... Husking motor (62)... Current sensor

Claims (1)

[Claims] It is equipped with a current sensor that detects the load current of the hulling motor that drives the dehulling roll, and a voltage sensor that detects voltage changes of the hulling motor, and detects the detected values of the current and voltage sensors at regular intervals. A dehulling control device for a rice huller, characterized in that it is configured to detect a state of change in dehulling rate based on a relative change.