JP2563326B2 - Control device for paddy sorting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a hulling / sorting machine configured to remove the paddy with a hulling mechanism, and then select and extract only brown rice from the sludge after the removal. The present invention relates to the control device.

[Conventional technology]

Recently, for the selection of brown rice from the scrapped rice after removal, use a rotary sorting mechanism with a brown rice gutter provided in a horizontally rotating sorting barrel with a number of recesses on the inner surface. Is being carried out.

In this rotary sorting mechanism, the slid rice that has been fed into the sorting cylinder is transported through the sorting cylinder while repeating the flow of being scraped up to a certain height by the rotation of the sorting cylinder and then falling to the bottom surface. In the following, brown rice among the scraped rice is lifted to a high position in a state of being fitted in a recess and then dropped, while the paddy in the scraped rice falls from a position lower than the brown rice. Then, the brown rice falling from a high position is received by a brown rice gutter and taken out, but in this case, the fluidized bed of the slid rice in the sorting cylinder needs to have a certain thickness. A certain amount of scraped rice is required in the body.

That is, when the amount of slid rice in the sorting cylinder, that is, the amount in the barrel is small, and the fluidized bed is thin, the slid rice moves up by the rotation of the sorting drum, and the amount of paddy that enters the brown rice gutter increases. Therefore, not only the accuracy of selecting brown rice decreases, but also the ability to select brown rice decreases. Further, when the amount in the barrel is large and the fluidized bed is thick, the amount of the slid rice that flows back from the sorting barrel to the grain hulling mechanism is large, so that not only the removing load in the grain hulling mechanism increases but also The rate of crushing unpolished rice increases when it is removed.

Therefore, JP-A-60-187344 as a prior art is
In a paddy sorting machine using a rotary sorting mechanism, a paddy quantity control means and a rotation control means of a sorting cylinder are provided in a paddy supply section, and a detection of an in-body quantity sensor for detecting the amount of paddy in the sorting cylinder According to the value, when the amount of the scraped rice in the cylinder increases, the rotation of the sorting cylinder is accelerated and at the same time the amount of paddy supplied to the hulling mechanism is decreased, while when the amount in the cylinder is reduced, It is proposed to control so as to reduce the rotation and increase the amount of paddy supplied to the paddy sliding mechanism at the same time.

[Problems to be solved by the invention]

However, as mentioned above, when the in-body volume is large,
The speed of rotation of the sorting cylinder is increased and at the same time the amount of paddy supply is reduced.
When the amount in the body is small, the rotation of the sorting cylinder is decelerated and the amount of paddy supply is increased at the same time.Therefore, it is simply determined whether the amount in the body is large or small, the rotation of the sorting cylinder is controlled, and the amount of paddy supplied. Performing the adjustment control of (1) at the same time without any difference between the two causes the following problems.

That is, when the rotation of the sorting cylinder is increased in response to the large amount of in-cylinder and the amount of paddy supply is reduced at the same time, the in-cylinder amount is
In addition to the decrease due to the increase in brown rice entering the brown rice gutter due to the increase in the rotation of the sorting cylinder, it also decreases due to the decrease in the paddy supply amount, and the decrease rate of the in-cylinder amount is considerably Since it becomes faster, the in-cylinder amount overshoots to the side smaller than the proper in-cylinder amount in the above control, and the phenomenon that the sorting accuracy of brown rice is deteriorated occurs. When the rotation of the sorting cylinder is slowed down and the paddy supply amount is increased at the same time, the in-body amount increases as the rotation of the sorting drum slows down and the amount of brown rice entering the brown rice gutter decreases. It also increases with an increase in the in-cylinder amount, and the rate of increase in the in-cylinder amount becomes considerably faster. The amount of rice that has flowed back from .

The present invention aims to eliminate the disadvantages of the prior art.

[Means for solving problems]

For this reason, the present invention provides a hulling mechanism, a rotary sorting mechanism in which a brown rice gutter is provided in a horizontally rotating sorting cylinder having a large number of recesses formed on its inner peripheral surface, an in-body quantity sensor, and an in-body An amount adjustment setting means, a body rotation control means of the sorting cylinder, and a paddy supply amount control means for adjusting a paddy supply amount to the paddy hull mechanism,
By comparing the detected value of the in-body amount sensor and the appropriate in-body amount set by the in-body amount adjustment setting means, sorting is performed when the in-body amount of the scraped rice in the sorting cylinder is larger than the appropriate in-body amount. The cylinder rotation control means is always operated so as to speed up the rotation of the cylinder and reduce the rotation of the selection cylinder when the amount of the cylinder is smaller than the appropriate amount of the cylinder, while the rotation of the selection cylinder is increased or decreased by the cylinder rotation control means. During the control, the paddy supply amount control means is intermittently operated at an appropriate time interval, and when the in-cylinder amount of the scraped rice in the sorting cylinder is larger than the appropriate in-cylinder amount, the paddy supply to the hulling mechanism is performed. The amount is reduced, and the paddy supply amount is controlled to be increased when the in-body amount is smaller than the appropriate in-body amount.

[Functions and effects of the invention]

According to this structure, since the comparison between the detected value of the in-body amount sensor and the appropriate in-body amount set by the in-body amount adjustment setting means is performed, the operator does not use the in-body amount adjustment setting means for paddy. It is possible to set an appropriate in-body amount so that a large amount of good brown rice (finished rice) can be taken out in accordance with quality and the like (size of grain, etc.). Then, the control for increasing or decreasing the rotation of the sorting cylinder according to the size comparison between the in-cylinder amount of the scraped rice in the sorting cylinder and the appropriate in-cylinder amount has a great influence on the sorting accuracy. The increase / decrease control is always executed and priority control is executed.

And, the control of the increase and decrease of the paddy supply amount by the paddy supply amount control means is performed at an appropriate time interval during the increase / decrease control of the selection cylinder rotation by the cylinder rotation control means. Due to the fact that the rotation of the sorting cylinder is speed-up controlled and the paddy supply amount is controlled to be reduced, and the rotation of the sorting cylinder is decelerated and the paddy supply amount is increased at the same time. Since it is possible to avoid each control, it is possible to reduce the overshoot of the in-body amount to a side smaller than the proper in-body amount or to the side larger than the appropriate in-body amount during control. Therefore, the sorting accuracy is stable.

Therefore, according to the present invention, it is possible to prevent the accuracy of sorting brown rice from decreasing due to overshoot during the both controls, and to prevent the amount of reflux to the hulling mechanism from increasing, thereby improving the control stability. Have.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. The hulling and sorting machine includes a horizontally long box-shaped wind sorting mechanism 1, a hulling mechanism 2 mounted on the upper left side of the wind sorting mechanism 1, and a rotary sorting mechanism 3 mounted on the upper right side of the wind sorting mechanism 1. The whole is composed by.

The paddy hull mechanism 2 includes a case 4 with a paddy supply hopper 5.
And a pair of left and right removing rolls 6 and 7 provided in the case 4.
And a shutter 8 of a manual opening / closing type and a paddy supply amount control valve 9, both of the removing rolls 6 and 7 are rotationally driven by a removing motor 10 provided inside the wind selecting mechanism 1, One of the removing rolls 6 has a fixed position, while the other removing roll 7 has a gap adjusting mechanism 12 driven by an actuator 11.
Is configured to move toward or away from the one of the removing rolls 6, and the paddy supply amount control valve 9 is configured to be opened / closed by an actuator 13.

In this case, each of the paddy supply amount control valve 9 is provided with a positioner 15 for detecting the opening position thereof, and both de-wapping rolls 6 and 7 are provided with the gap adjustment for adjusting the gap in an emergency. An unfolding mechanism (not shown) is provided so as to be opened preferentially to the mechanism 12.

The wind selecting mechanism 1 includes a compressed air fan 16 for sucking the atmosphere,
It consists of a dust-exhausting fan 17, and a wind-separating part 18 for sliding-down rice and a wind-selecting part 19 for brown-rice, which are provided between the two fans 16, 17, and the wind-selecting part 18 for sliding-down rice is the paddy-sheathed rice. It is located just below the mechanism 2 and selects rice husks from the scrapped rice after removal by wind. The scraped rice after the wind is selected from the scraped rice gutter 20 with the spiral conveyor 21 at the bucket conveyor 22 as described above. The brown rice wind-selecting unit 19 that is sent to the rotary sorting mechanism 3 further selects the finish of the brown rice sorted by the rotary sorting mechanism 3, and the finished brown rice after the wind sorting is a spiral conveyor. Brown rice gutter 23 with bucket conveyor 24
Is taken out of the plane.

In this case, each of the spiral conveyors 21, the bucket conveyors 22 and 24, and the fans 16 and 17 are provided with the removing rolls 6 and 7.
Power is transmitted from.

On the other hand, the rotary type sorting mechanism 3 is provided with a rotary type sorting cylinder 27 which is horizontally installed in a box-shaped case 26 in two upper and lower stages.
27 are each rotatably supported by a rotator 29 attached to a shaft 28 horizontally mounted in the box-shaped case 26.
By connecting to both the removing rolls 6 and 7 through the continuously variable transmission mechanism 30, both sorting cylinders 27 are rotationally driven in the direction indicated by arrow A in FIG.

In both of the sorting cylinders 27, one end farther from the grain hulling mechanism 2 is formed on the supply side 27a, and the other end closer to the grain hulling mechanism 2 is formed on the discharge side 27b. A large number of recesses 31 each having a size to fit with are formed.

Further, in both of the sorting cylinders 27, brown rice gutters 32 with a spiral conveyor are provided, and slide rice gutters 33 with a spiral conveyor are juxtaposed adjacent to the brown rice gutters 32. .

The scraped rice sent from the bucket conveyor 22 is
Amounts of the rice, which are approximately equal to each other, are supplied to the both sides of the falling rice gutter 33 through the chute 34, and are supplied to the supply side 27a in the sorting cylinder 27 by the both sides of the falling rice gutter 33, while both brown rice gutters 32 The brown rice that has entered the inside merges with the chute 35 and then drops into the brown rice wind selecting section 19.

A plurality of paddy-raising blades 36 are provided on the inner surfaces of the discharge sides 27b of both the sorting cylinders 27, and a paddy-reducing chute 37 is mounted between the paddy-feeding hopper 5 of the paddy-shaving mechanism 2. The paddy is configured to flow back to the paddy supply hopper 5.

Furthermore, in both of the sorting cylinders 27, a sensor plate 14 that comes into contact with the fluidized bed of the slid rice in the sorting cylinders 27 is rotatably provided. An in-body quantity sensor 14a for detecting the thickness of the fluidized bed of the slid rice in the sorting cylinder 27, that is, the in-body quantity Q in accordance with the moving angle is connected.

Reference numeral 38 is a signal from the in-body amount sensor 14a, and a signal from an in-body amount adjustment setting means 25 by which an operator can appropriately set an appropriate in-body amount Qo. It is an electronic control device for appropriately operating the vehicle actuator 13 and the continuously variable transmission mechanism 30.

The electronic control unit 38, as will be described in the following embodiments, uses the in-body quantity Q of the scraped rice in the sorting cylinder 27.
Is greater than the appropriate in-body amount Qo, the rotation of the sorting cylinder 27 is increased,
Cylinder rotation control means for decelerating the rotation of the sorting cylinder 27 when the in-body amount Q is less than the appropriate in-body amount Qo;
When the in-body quantity Q of the scraped rice in the inside is larger than the appropriate in-body quantity Qo, open the paddy supply amount control valve 9 in the hulling mechanism to set the in-body quantity Q
Is less than the appropriate in-body amount Qo, the paddy supply amount control means for closing the paddy supply amount control valve 9 and the paddy supply amount control means for controlling the increase / decrease in the rotation of the sorting cylinder by the cylinder rotation control means. Means for intermittently executing control of increase / decrease in supply amount at intervals of time To is provided.

This will be explained in detail with reference to the flow chart of the embodiment shown in FIG. 4. In step S1 following the start, the in-body amount Q is read, and in step S2, the appropriate in-body amount Qo set by the in-body amount adjustment setting means 25 is read. , Then
In step S3, the in-body amount Q is compared with the appropriate in-body amount Qo, and when Q <Qo, that is, when the in-body amount Q is less than the appropriate in-body amount Qo, the rotation of the selection cylinder 27 is changed in step S4. When decelerating and Q> Qo, that is, the in-body amount Q is the proper in-body amount Qo
If the number is larger, the cylinder rotation is controlled by increasing the rotation of the selection cylinder 27 in step S5.

Then, the next step S6, step S7 and step S8
In the above, the control of the body rotation is performed at an appropriate time To (for example,
To = 60 seconds), and when this appropriate time To elapses, control is passed to the paddy supply amount.

The control of the paddy supply amount is performed by the in-body amount Q in step S9.
After reading the proper in-body amount Qo in step S10, the in-body amount Q is compared with the appropriate in-body amount Qo in step S11. When Q <Qo, that is, the in-body amount Q is in the proper in-body amount. If it is smaller than the amount Qo, the paddy supply amount control valve 9 is opened to increase the paddy supply amount in step S12, and when Q> Qo, that is, when the in-body amount Q is larger than the appropriate in-body amount Qo,
In step S13, the paddy supply amount control valve 9 is closed to reduce the paddy supply amount.

Thus, the control of the paddy supply amount is intermittently performed at appropriate intervals of time To during the control of the cylinder rotation, and the rotation of the sorting cylinder is speed-up controlled in accordance with the large in-body quantity Q. At the same time, it is possible to avoid the reduction control of the paddy supply amount and the deceleration control of the rotation of the sorting cylinder and the simultaneous increase control of the paddy supply amount due to the small in-body amount Q. is there.

[Brief description of drawings]

The drawing shows an embodiment of the present invention, FIG. 1 is an enlarged vertical front view of a hulling machine, FIG. 2 is a vertical front view of a hulling and sorting device, and FIG. 3 is an enlarged sectional view taken along line III-III of FIG. FIG. 4 and FIG. 4 are diagrams showing a control flow sheet. 2 ... Hulling mechanism, 3 ... Rotary sorting mechanism, 5 ... Rice feeding hopper, 6,7 ... Pulling roll, 9 ... Rice feeding amount control valve, 10 ... Pulling motor, 27 ... Sorting cylinder, 32 …… Brown rice gutter, 30 …… Stepless speed change mechanism, 14 …… Sensor plate, 14a …… In-body quantity sensor, 38 …… Control device.

Claims (1)

(57) [Claims] 1. A hulling mechanism, a rotary sorting mechanism having a brown rice gutter provided in a horizontally rotating sorting cylinder having a large number of recesses formed on its inner peripheral surface, an in-body quantity sensor, and an in-body quantity. Adjustment setting means, cylinder rotation control means of the sorting cylinder, and paddy supply amount control means for adjusting the paddy supply amount to the paddy hull mechanism, and the detection value of the internal cylinder amount sensor and the internal cylinder amount adjustment setting According to the comparison with the proper in-body amount set by the means, when the in-body amount of the scraped rice in the sorting cylinder is larger than the appropriate in-body amount, the rotation of the sorting cylinder is accelerated so that the in-body amount is When the amount is less than the amount, while constantly operating the cylinder rotation control means so as to slow down the rotation of the selection cylinder, while the increase and decrease control of the selection cylinder rotation by the cylinder rotation control means, the paddy supply amount control means, Operate intermittently at intervals to ensure that the amount of scraped rice inside the sorting cylinder is appropriate Control of a hull sorting machine, characterized in that the paddy supply amount to the hulling mechanism is reduced when the amount is larger, and the paddy amount is controlled to be increased when the in-body amount is smaller than the appropriate in-body amount apparatus.