JPH07114976B2 - Supply amount control device for paddy sorting machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement of a hulling / sorting machine that guides mixed rice detreated by derolling to a rotary sorting cylinder and sorts it into paddy and brown rice.

(Prior Art) Conventionally, as a device of this type, a supply amount control valve is provided at the discharge port of the main hopper, and the paddy of the main hopper is supplied to a deroller via the supply amount control valve to be de-treated and de-treated. The subsequent mixed rice is sorted by a rotary sorting cylinder, the sorted finished rice is discharged to the outside of the machine, the reduced paddy is sent back to the derolling roll, and is de-processed again with the paddy of the main hopper, and further set by the de-rate setting means. It is known that the opening degree of the derolling is adjusted so as to match the released rate.

In addition, the conventional device is equipped with a layer thickness sensor that detects the layer thickness of the mixed rice that stays in the rotary sorting cylinder, and opens and closes the supply amount control valve of the main hopper according to the output of this sensor to remove paddy for derolling. The supply amount is controlled so that the layer thickness of the mixed rice in the rotary selection cylinder is constant.

(Problems to be solved by the invention) However, if the amount of reduced paddy is too large compared to the finished rice even if the layer thickness is constant, brown rice is mixed in the reduced paddy and the brown rice is rubbed twice to cause skin irritation.

On the other hand, if the amount of the finished rice is too much larger than that of the reduced rice, the rice will be mixed into the finished rice to deteriorate the selection quality.

In order to select good quality in this way, the balance between the amount of finished rice and the amount of reduced paddy, that is, the ratio K (K
= Reduced paddy amount / finished rice amount) is important, but the proper value (or region) of this ratio K depends on the removal rate (see Fig. 3).

That is, when the removal rate is high, the ratio of brown rice contained in the mixed rice in the selection cylinder is large, and therefore the appropriate value of the ratio K of the amount of finished rice and the amount of reduced paddy is small.

On the contrary, when the removal rate is low, the ratio of brown rice contained in the mixed rice in the selection cylinder is small, and therefore the appropriate value of the ratio K is large.

However, as in the conventional device, in the supply amount control that makes the layer thickness constant regardless of the removal rate, the deviation of the ratio K from the proper value, that is, the balance between the amount of finished rice and the amount of reduced paddy is lost depending on the set value of the removal rate. Occasionally, paddy was mixed with each finish, and a large amount of brown rice was contained in the reduced paddy.

In view of these points, an object of the present invention is to measure an appropriate ratio of supply amount control, thereby preventing double-polished brown rice and preventing paddy from being mixed with finished rice.

(Means for Solving Problems) In order to achieve such an object, the present invention has the following configurations.

That is, in the present invention, a supply amount control valve is provided at the discharge port of the main hopper, the paddy of the main hopper is supplied to the dep roll via the supply amount control valve to perform dep treatment, and the mixed rice after dep treatment is rotated. The finished rice that has been sorted by the sorting cylinder is discharged to the outside of the machine, and the reduced paddy is returned to the dep roll for dep treatment again, and the dep rate set by the dep rate setting means matches the dep rate. In a hulling and sorting machine that adjusts the opening degree of the depulling roll, a finished rice amount sensor that detects the amount of the finished rice discharged, and a reduced paddy amount sensor that detects the reduced amount of the reduced paddy,
A target ratio determining means for changing and determining a target ratio, which is an appropriate value of the amount of reduced paddy rice / the amount of finished rice, in inverse proportion to the changing direction of the set depopulation rate; the finished rice amount sensor and the reduced paddy amount sensor; And a supply amount control valve control means for adjusting the opening of the supply amount control valve so that the detection ratio of each detection value matches the target ratio.

(Operation) In the present invention having such a configuration, prior to the start of the hulling / sorting operation, the removal rate setting unit sets the removal rate to, for example, “high”, “standard”, or “low”. Then, the target ratio determining means determines a predetermined target ratio according to the set removal rate. Here, the target ratio is an appropriate value of the amount of reduced paddy rice / the amount of finished rice, and is changed in inverse proportion to the changing direction of the set shedding rate.

Next, when the hulling and sorting work starts, during the hulling and sorting,
The finished rice amount sensor 10 detects the amount of finished rice, and the reduced paddy amount sensor 11 detects the amount of reduced paddy.

Then, the supply amount control valve control means, the above-mentioned both sensors 10,
The opening degree of the supply amount control valve 2 of the main hopper 1 is adjusted so that the detection ratio of each detection value of 11 matches the target ratio described above.

By the way, in the present invention, when the escape rate is set to “high”, the target ratio is made smaller than when the escape rate is set to “standard”. As a result, when the set removal rate is “high”, the amount of brown rice supplied into the rotary sorting cylinder 7 increases, but the target ratio is reduced as described above, so that the finished rice discharged outside the machine is Since the amount of brown rice is increased, it is possible to prevent the brown rice from being rubbed twice.

Further, when the set escape rate is set to "low", the target ratio is made larger than when the set escape rate is set to "standard". As a result, when the set escape rate is "low",
Although the amount of brown rice supplied into the rotary sorting cylinder 7 decreases, the target ratio is increased as described above, so that an increase in the amount of paddy mixed in the finished rice can be suppressed.

Embodiments Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention. In FIG. 1, reference numeral 1 is a main hopper for accommodating paddy, and a supply amount control valve 2 for adjusting the supply amount of the paddy is provided at its outlet. The opening degree of the supply amount control valve 2 is adjusted by the supply amount control valve actuator 3.

Numerals 4 and 4 are a pair of left and right derolling rolls for removing the paddy supplied from the main hopper 1 and the auxiliary hopper 5. The derolling actuator 6 adjusts the clearance between the derolling rolls 4 and 4.

Reference numeral 7 denotes a rotary selection tube for selecting brown rice and paddy when the mixed rice of brown rice and paddy detreated by the derolling rolls 4 and 4 is supplied. A brown rice collecting trough (not shown) for collecting the finished rice is provided in the rotary sorting cylinder 7, and a finishing rice control valve 8 is provided along the edge of the trough to adjust the rate of the finished rice recovery.

Rotating sorting cylinder 7 for mixed rice that has been detreated with derolling rolls 4 and 4.
A removal rate sensor 9 for detecting the removal rate of the mixed rice is provided in the middle of the supply path for supplying the mixed rice.

A finished rice quantity sensor 10 for detecting the flow rate of the finished rice per unit time is provided in the middle of the discharge path of the finished rice discharged from the rotary sorting cylinder 7.

A reduction paddy amount sensor 11 for detecting the flow rate of the reduction paddy per unit time is provided in the middle of the return path of the reduction paddy that returns from the rotary sorting cylinder 7 to the auxiliary hopper 5.

Next, regarding the block diagram of the control system of the embodiment of the present invention,
It will be described with reference to the drawings.

In FIG. 2, reference numeral 20 denotes an input interface, which is connected with a rate-elimination sensor 9, a finishing rice amount sensor 10, a reduction paddy amount sensor 11, and a rate-elimination setting device 21 for setting the rate of desorption. Signal is received and supplied to the microcomputer 22. The microcomputer 22 processes various signals as described later and controls each component based on the signals.

An output interface 23 connects an actuator drive circuit 24 that drives the supply amount control valve actuator 3 and an actuator drive circuit 25 that drives the derolling actuator 6.

Next, an example of control by the microcomputer 22 of the embodiment configured as above will be described.

In this embodiment, prior to the start of the hulling and sorting work, the removal rate is set by the removal rate setting device 21 to "high", "standard", "low",
Set to either.

Next, the microcomputer 22 determines a predetermined target ratio K according to the above-mentioned set removal rate. Here, the target ratio K is shown by the following equation. K = reduced paddy amount / finished rice amount This target ratio K is a straight line a and a straight line b as shown in FIG.
It is preferable to set it as a predetermined area surrounded by and. Further, this target ratio K is determined in inverse proportion to the set withdrawal ratio, as shown in FIG.

Next, when the paddy sorting work is started, during the paddy sorting,
The removal rate sensor 9 detects the removal rate, and the opening degrees of the removal rolls 4 and 4 are adjusted so that the detected removal rate matches the set removal rate.

Further, during the hulling and sorting, the finished rice amount sensor 10 detects the finished rice amount, and the reduced paddy amount sensor 11 detects the reduced paddy amount. And the detection ratio of each detection value of both sensors 10 and 11
The opening degree of the supply amount control valve 2 of the main hopper 1 is adjusted so that KM matches the target ratio K determined as described above.

For example, when the escape rate is set to “standard” as shown in FIG. 3, the target ratio K corresponding to the set escape rate is determined within a predetermined range between the upper limit value N1 and the lower limit value N2.
Therefore, the opening degree of the supply amount control valve 2 of the main hopper 1 is adjusted as shown in Table 1 below according to the magnitude of the above-mentioned detection ratio KM.

In Table 1, specific numerical examples of N1 and N2 are N1 = 1/3 and N2 = 1/10.

By the way, when the removal rate is set to "high", the amount of brown rice supplied to the rotary selection tube 7 increases as compared with the case where it is set to "standard". However, at this time, the target ratio K is determined to be small as described above (see FIG. 3).
The amount of finished rice discharged from the rotary sorting cylinder 7 to the outside of the machine is increased, and thus the double sliding can be prevented without increasing the reduction amount of brown rice.

Further, when the removal rate is set to "low", the amount of brown rice supplied to the rotary selection tube 7 is reduced as compared with the case where it is set to "standard". However, at this time, since the target ratio K is determined to be large as described above (see FIG. 3), brown rice is not excessively taken out from the rotary sorting cylinder 7 to the outside of the machine, and thus it is possible to prevent paddy from being mixed with the finished rice.

Next, various devices shown in FIG. 4 are further added to the input side and the output side of the microcomputer 22 of the block diagram shown in FIG. I will explain it below.

In FIG. 4, reference numeral 30 is a main motor current sensor that detects a current flowing through the main motor 40 that rotates the rotation selection cylinder 7, and reference numeral 31 is a supply amount control valve opening sensor that detects the opening of the supply amount control valve 2. .

Reference numeral 32 denotes an operation panel on which a start switch 32A, a stop switch 32B, a buzzer stop switch 32C for stopping the alarm of the alarm buzzer 41, and a paddy are provided in addition to the removal rate setting device 21 shown in FIG. An automatic / manual switch 32D for selecting automatic or manual operation of the slide sorter is provided.

In addition to the main motor 40 and the alarm buzzer 41 described above, the output interface 23 is additionally provided with a display 42 for displaying various information as described later.

As described above, various kinds of equipment were added, and thereby the microcomputer 22 was made to realize the processing of the following contents.

For example, at the time of initial setting of the derolling rolls 4 and 4, the supply amount control valve opening sensor 31 detects the opening amount of the supply amount control valve 2, and when an open state, that is, an abnormality is detected, an alarm buzzer 41 notifies the abnormality. At the same time, the abnormality content is displayed on the display 42. After that, the operator turns on the buzzer stop switch.
When 32C is pressed, the alarm sound of the alarm buzzer 41 is stopped, and at the same time, the coping method for the abnormality is displayed on the display 42.

By such processing, the countermeasure against the abnormality can be displayed on the display unit.
Since it is displayed on 42, the operator can deal with the abnormality easily and accurately.

At the start of paddy sorting, either automatic or manual is selected by the automatic / manual selection switch 32D.

When an abnormality such as is detected during automatic operation by automatic selection, the contents of the abnormality and the abnormality processing method are displayed.
Display on 42.

On the other hand, when an abnormality is detected as in during manual operation when manual is selected, the operation procedure after the abnormality is displayed sequentially.
Display on 42.

By such processing, even if the operator is unfamiliar, the driver can easily and safely drive.

Whether the spiral bottom provided on the bottom of the brown rice collecting gutter arranged in the rotary sorting cylinder 7 is openable / closable based on the detection values of the finished rice amount sensor 10 and the reduced paddy amount sensor 11 at the start of paddy hull sorting. To detect.

That is, when there is no detection output of the finished rice amount sensor 10 but only the detection output of the reduced paddy amount sensor 11, the spiral bottom is in an open state and the finished rice is not discharged out of the machine. I understand.

By such processing, a dedicated sensor for detecting the open / closed state of the spiral bottom can be omitted.

During hull sorting, the main motor current sensor 30 detects the motor current, the finished rice amount sensor 10 detects the amount of finished rice, and when each detected value exceeds a predetermined value, the rotary sorting cylinder 7 or It is determined that the finished rice discharge passage is blocked, the supply amount control valve is closed, and the supply from the main hopper 1 is stopped.

By such processing, it is possible to avoid interruption or suspension of work due to abnormal overload of the main motor.

(Effect of the invention) As described above, in the present invention, the amount of finished rice and the amount of reduced paddy are respectively detected, and the opening of the supply amount control valve of the main hopper is adjusted so that the detection ratios thereof match the target ratio. Since the above target ratio is determined in inverse proportion to the set loss rate, it is possible to prevent the brown rice from being rubbed twice and to prevent the paddy from being mixed into the finished rice, so that the finished rice rate is maintained regardless of the set loss rate. Can improve the quality of.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, FIG. 2 is a block diagram of its control system, FIG. 3 is a graph showing a relationship between a withdrawal rate and a target ratio, and FIG. 4 is a block diagram of FIG. FIG. 3 is a block diagram in which various types of devices are added to FIG. 1 ... Main hopper, 2 ... Supply amount control valve, 4 ... Rolling off, 7 ... Rotating sorting cylinder, 10 ... Finishing rice amount sensor, 11 ... Reduced paddy amount sensor, 22 ... Microcomputer.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinji Ninomiya No. 1 Hachikura, Tobe, Iyo-gun, Ehime Prefecture, Engineering Department, Iseki Agricultural Machinery Co., Ltd. (56) Reference JP-A-62-216646 (JP, A)

Claims (1)

[Claims] 1. A supply amount control valve is provided at a discharge port of a main hopper,
The paddy of the main hopper is supplied to the dep roll via the feed amount control valve to perform dep treatment, the mixed rice after the dep treatment is sorted by the rotary sorting cylinder, and the selected finished rice is discharged to the outside of the machine. In the paddy sorting machine that returns the reduced paddy to the de-puffing roll and performs the de-puffing process again, and further adjusts the opening degree of the de-puffing roll so as to match the de-pulling rate set by the de-pulping rate setting means , A finished rice amount sensor for detecting the amount of the finished rice discharged, a reduced paddy amount sensor for detecting the reduced amount of the reduced paddy, and a target ratio which is an appropriate value of the reduced paddy amount / finished rice amount Target ratio determining means for changing and determining in inverse proportion to the fluctuation of the rate, and the supply amount adjustment so that the detection ratio of each detection value of the finished rice amount sensor and the reduced paddy amount sensor matches the target ratio. Supply amount control valve control means for adjusting the opening degree of the valve, The control device.