JPH0698313B2 - Supply amount control device for huller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention stores the grains supplied from the depulling unit whose processing amount per unit time can be changed and supplies the stored grains to the sorting unit. A storage amount detecting means for detecting the storage amount of the storage tank, and a processing amount per unit time of the removing unit based on the detection information of the storage amount detecting means so as to maintain the storage amount within a set range. The present invention relates to a supply amount control device in a hulling machine, which is provided with a supply amount adjusting unit that automatically increases and decreases and that intermittently drives the selection unit.

[Conventional technology]

In the hulling machine, the sorting unit is configured to separately collect and recover brown rice, mixed rice in which brown rice and paddy are mixed, and paddy. Then, the mixed rice is returned to the storage tank to be sorted again, and the paddy is stripped again in the stripping unit, so that the throughput per unit time in the stripping unit is constant. Also, the amount of storage in the storage tank will change.

For example, when the removal rate in the removal section decreases, the amount of mixed rice recovered from the sorting section into the storage tank increases,
The amount of storage in the storage tank will increase.

Various other causes may be considered as the cause of the fluctuation of the storage amount of the storage tank.

For example, when the mixing ratio of rice gruel to the grain is high due to poor cropping, the rice grains collected as defective rice are increased by the sorting device equipped in the dewetting unit, so the supply to the sorting unit is reduced. The amount of grain that is actually supplied from the depulling unit becomes smaller than the sorting capacity of the sorting unit, and the storage amount is reduced.

Therefore, conventionally, when the storage amount of the storage tank becomes smaller than the set value on the lower limit side, that is, when the storage tank is in an insufficient state, the sorting unit is stopped and the supply amount from the removing unit is increased by the set amount, and the storage amount is increased. When the amount becomes larger than the set value on the lower limit side, the selection unit is driven. Also, when the storage amount of the storage tank becomes larger than the set value on the upper limit side, that is, when it is in an excessive state, the removing unit is stopped and the supply amount from the removing unit is adjusted to be a set amount smaller, and When the storage amount becomes smaller than the set value on the upper limit side, the removing unit is driven with the supply amount adjusted to be small as described above. That is, the processing amount per unit time in the removing unit is increased or decreased based on the detection information of the storage amount so that the storage amount is maintained within the set range (see Japanese Utility Model Laid-Open No. 60-49936). ).

[Problems to be Solved by the Invention]

However, in the conventional configuration, when the storage amount in the storage tank becomes insufficient, the sorting unit is stopped until the storage amount is recovered, which is disadvantageous in that the work efficiency decreases, and the best is desired. That is, since the brown rice is not collected while the sorting unit is stopped, the work efficiency is reduced, so that it is desirable to shorten the stopping time of the sorting unit as much as possible.

By the way, the temporary stop of the operation of the removing unit does not affect the reduction of work efficiency, and thus does not cause a problem.

The present invention has been made in view of the above circumstances, and an object thereof is to prevent the sorting unit from stopping as much as possible and to efficiently control the operation of each unit.

[Means for Solving the Problems]

The supply amount control device in the grain huller according to the present invention stores the storage amount of the storage tank that stores the grains supplied from the depulling unit that can change the processing amount per unit time and that supplies the stored grains to the sorting unit. And a storage amount detecting means for detecting the storage amount, so that the processing amount per unit time of the removing unit is automatically increased or decreased based on the detection information of the storage amount detecting means so as to maintain the storage amount within a set range. In addition, a supply amount adjusting means for intermittently driving the sorting unit is provided, and its characteristic configuration is as follows.

That is, the storage amount detecting means determines whether or not the storage amount is smaller than a set lower limit value, is larger or smaller than a set level set to a value larger than the set lower limit, and It is configured to be able to detect whether it is higher than a set level for starting operation of the sorting unit, and the supply amount adjusting means stops the sorting unit when the storage amount becomes smaller than the set lower limit. And, the storage amount is set to the set value only when the sorting unit is driven as the storage amount becomes higher than the set level for starting operation, and only when the sorting unit is in the driving state. The amount of processing of the removing unit per unit time is reduced by a first set amount as the level is changed from a level lower than the level, and the removal unit is changed as the storage amount is changed from a level higher than the level. The amount of processing per unit time of Than the first set amount in that it is configured to increase the second set amount, which is set larger becomes the value.

[Work]

In other words, the storage amount is detected in two stages of the set lower limit and the set level set to a value larger than the set lower limit, and while the sorting unit is in the driving state, the storage amount is higher than the set level. By increasing the amount of increase when the amount becomes small to be larger than the amount of decrease when the amount becomes smaller than the set level, it is possible to suppress the storage amount from becoming smaller than the set lower limit as much as possible. Will be stopped as much as possible.

However, when the processing amount in the sorting unit becomes larger than the supply amount from the removing unit and the storage amount becomes smaller than the set lower limit, the storage amount becomes larger than the set level for starting operation. The sorting unit will be stopped until it becomes possible to quickly recover the storage amount.

〔The invention's effect〕

Therefore, it is possible to prevent the sorting unit from stopping as much as possible by suppressing the storage amount of the storage tank from decreasing below the set lower limit, and thus it is possible to improve the work efficiency.

〔Example〕

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

As shown in FIG. 1, the paddy supplied to the paddy tank (1) is removed from the paddy tank (1) by a removing section (2) provided at a position on the lower side of the transportation, and the paddy and wind are removed. After the rice husks and rice porridge are removed in the selection section (3), they are temporarily stored in the mixed rice tank (4) as a storage tank. Then, the grains stored in the mixed rice tank (4) are supplied to the sorting unit (5) in a state where the outflow amount per unit time is adjusted to a set amount, and the sorting unit (5). In this way, three types of brown rice, mixed rice of paddy and brown rice, and paddy are sorted and collected.

However, although not described in detail, the mixed rice collected in the sorting section is
The rice is transported to the mixed rice tank (4) and sorted again, and the paddy is transported to the paddy tank (1) and again subjected to the removing process.

At the lower end of the paddy tank (1), the paddy tank (1)
There is provided an electromagnetically operated shutter (6) for stopping the supply of the grain from the to the removing unit (2). Similarly, at the lower end of the mixed rice tank (4), an electromagnetically operated shutter (7) for stopping the grain supply to the sorting section (5) is provided.

Explaining the structure of the removing unit (2), the pair of left and right rollers (8) and (9) are located at a set interval, and are rotationally driven in opposite directions with different peripheral velocities. It is supposed to be done. In other words, when the paddy passes between the rollers (8) and (9) having different peripheral speeds,
The rice husks are removed and removed.

Then, between the shutter (6) of the paddy tank (1) and the rollers (8) and (9), a swinging type for changing and adjusting the grain supply amount to the removing unit (2). Supply adjustment plate (10)
An electric motor (11) as an actuator for swinging the supply amount adjusting plate (10), and an opening detection sensor (S ₀ ) for detecting the opening of the supply adjusting plate (10). It is provided.

That is, the processing amount per unit time in the removing unit (2) can be changed and adjusted by changing and adjusting the opening degree of the supply amount adjusting plate (10).

However, an electromagnetically-operated roll opening / closing actuator (12) is provided so that the rollers (8) and (9) can be stopped from rotating with a gap between them when the operation is stopped.

Inside the mixed rice tank (4), an upper limit detection sensor (S ₁ ) for detecting whether the storage amount is larger than the upper limit corresponding to the full state, and a lower limit corresponding to the storage amount almost empty Lower limit detection sensor (S ₂ ) that detects whether or not
They both sensors (S _1), a pair of storage amount detection sensor disposed vertically spaced between the _{(S 2) (S 3)} ,
(S ₄ ) and 4 sensors are provided. Although not described in detail, each of the sensors (S _{1 to} S ₄ ) is of a pressure sensitive type and is configured to output an ON signal when a pressure larger than a set pressure is detected. That is, it is detected that the storage amount is above the sensor installation location in the ON state, and that the storage amount is below the sensor installation location in the OFF state.

That is, the four sensors (S _{1 to} S ₄ ) correspond to the storage amount detecting means (S) that detects the storage amount of the mixed rice tank (4) as the storage tank.

However, in the following description, the sensor on the upper limit detection sensor (S ₁ ) side of the pair of storage amount detection sensors (S ₃ ) and (S ₄ ) is the first storage amount detection that detects the first storage amount. The sensor (S ₃ ) is called, and the sensor on the lower limit detection sensor (S ₂ ) side is called the second storage amount detection sensor (S ₄ ) which detects the second storage amount. The first storage amount detection sensor (S ₃ )
As will be described later, has a function of detecting whether or not it is at a set level at which the operation of the sorting section (5) is started.

Then, based on the detection information of each of the sensors (S _{0 to} S ₄ ), a microcomputer is used to control the operation of each unit while automatically adjusting the grain supply amount to the removing unit (2). The control device (13) is provided.

That is, using the control device (13), the unit time of the removing unit (2) based on the detection information of the storage amount detecting means (S) so as to maintain the storage amount within the set range. A supply amount adjusting means (100) for automatically increasing / decreasing the processing amount per hit and for intermittently driving the sorting unit (5) is configured.

Next, the operation of the control device (13) will be described based on the flowchart shown in FIG.

First, based on whether the upper limit detection sensor (S ₁ ) is OFF or ON, it is determined whether the storage amount of the mixed rice tank (4) has reached the upper limit.

When the upper limit sensor (S ₁ ) is turned on, the mixed rice tank (4)
When the storage amount of the rice has reached the upper limit, the shutter (6) of the paddy tank (1) is closed to stop the grain supply to the removing unit (2), and the removing unit ( The rotation drive of both rollers (8) and (9) of 2) is stopped, and the roll opening / closing actuator (12) is operated to separate the roll intervals, so that the operation of the removing section (2) and the paddy are performed. The operation of the sliding / wind selecting unit (3) is stopped.

If the storage amount has not reached the upper limit, whether the storage amount in the mixed rice tank (4) has reached the lower limit based on whether the lower limit sensor (S ₂ ) is ON or OFF. Determine whether.

When the lower limit sensor (S ₂ ) is turned off and the storage amount of the mixed rice tank (4) reaches the lower limit, the shutter (7) of the mixed rice tank (4) is closed and the sorting unit ( The grain supply to 5) is stopped and the operation of the sorting section (5) is stopped.

When the storage amount is between the upper limit and the lower limit, the storage amount of the mixed rice tank 4 is determined based on whether the first storage amount detection sensor (S ₃ ) has changed from OFF to ON. It is determined whether or not the upper limit has not been reached, but the first storage amount close to the upper limit has been reached.

When the storage amount of the mixed rice tank (4) has reached the first storage amount, it is determined whether the sorting unit (5) is stopped.

When the sorting unit (5) is stopped, the driving of the sorting unit (5) is restarted and started, and when it is not stopped, the processing amount of the sorting unit (5) is smaller than the processing amount of the sorting unit (5). Part (2)
In order to make it difficult for the removing unit (2) to stop by determining that the supply amount from the supply motor is large, the electric motor (11) is controlled based on the detection information of the supply amount detection sensor (S ₀ ). Operate the supply amount adjusting plate (10) from the current opening to 1.
Close 5 mm to reduce the amount of supply to the removing section (2).

When the storage amount of the mixed rice tank (4) is not larger than the first storage amount, the first storage amount detection sensor (S ₃ )
It is determined whether or not the storage amount of the mixed rice tank (4) is smaller than the first storage amount, based on whether the storage amount has changed from ON to OFF.

When the storage amount of the mixed rice tank (4) is smaller than the first storage amount, it is determined whether or not the removing unit (2) is stopped.

When the removing unit (2) is stopped, the driving of the removing unit (2) is restarted to start, and when not stopped, the supply from the removing unit (2). The supply amount adjusting plate (10) is opened at present so that the processing amount in the selection unit (5) is judged to be greater than the amount and it is difficult for the selection unit (5) to stop. Open 1.0 mm from the angle to increase the supply amount to the removing section (2).

When the first storage amount detection sensor (S ₃ ) is in the ON state or the OFF state and there is no ON / OFF change, based on the ON / OFF change of the second storage amount detection sensor (S ₄ ), An increase / decrease in the level of the second storage amount is determined.

When the second storage amount detection sensor (S ₄ ) changes from OFF to ON and the storage amount of the mixed rice tank (4) is larger than the second storage amount, the supply amount adjusting plate (10 ) 1.0m
m Close to reduce supply.

When the second storage amount detection sensor (S ₄ ) changes from ON to OFF and the storage amount of the mixed rice tank (4) is smaller than the second storage amount, the supply amount adjusting plate (10 ) To 1.5 m
m Close to increase supply.

When the second storage amount detection sensor (S ₄ ) is in the ON state or the OFF state and there is no ON / OFF change, the current adjustment state is maintained.

Although not described in detail, the control device (13) repeats each process described above until the entire operation is completed.

That is, when the storage amount of the mixed rice tank (4) has reached the upper limit, if the grain supply is continued, it will overflow from the mixed rice tank (4). When the operation of the hulling / wind selecting unit (3) is stopped and the lower limit is reached, if the selecting unit (5) is operated in a state where the supply amount of grain is insufficient, the selecting failure occurs, so the selecting The grain supply to the section (5) and the operation are stopped.

Then, when the storage amount is between the upper limit and the lower limit, by finely adjusting the grain supply amount to the removing unit (2), the removing unit (2) and the selecting unit (5). The processing efficiency is not lowered as much as possible by preventing each part of () from stopping.

However, when the removing unit (2) or the selecting unit (5) is stopped when the storage amount is recovered between the first storage amount and the second storage amount, the By simply starting the engine, the supply amount is not increased or decreased, and the storage amount can be quickly recovered.

By the way, when the storage amount is larger than the first storage amount than the increase / decrease amount (1.0 mm) of the supply amount when the storage amount is smaller than the first storage amount and when the storage amount is larger than the second storage amount. The reason why the value of the increase / decrease amount (1.5 mm) of the supply amount when the amount is smaller than the second storage amount is large is
In order to shorten the stop time of the removing unit (2) and the selecting unit (5) as much as possible, the return of the storage amount between the first storage amount and the second storage amount is prompt. This is to be done.

[Another embodiment]

In the above-described embodiment, the case where the operation of the sorting unit (5) is restarted at the time when the storage amount is restored to the first storage amount on the upper limit side is illustrated, but at the time when the storage amount is restored to be larger than the second storage amount. The operation may be restarted at.

Further, in the above-mentioned embodiment, in order to detect whether or not the storage amount is within the set range, _two sensors are provided between the upper limit sensor (S ₁ ) and the lower limit sensor (S ₂ ) with an interval. (S ₃ ),
Although the case where (S ₄ ) is provided is illustrated, for example, one sensor is provided between the upper limit sensor (S ₁ ) and the lower limit sensor (s ₂ ) and the mounting location of the sensor is set at the set level and selected. The processing amount per unit time in the removing unit (2) may be increased or decreased as the set level for starting the operation of the unit (5). However, the increasing side is set to a larger value than the decreasing side.

The specific configuration of each part necessary for carrying out the present invention can be variously changed according to the structure of the huller.

It should be noted that reference numerals are added to the claims for convenience of the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of a supply amount control device in a huller according to the present invention, FIG. 1 is a block diagram of the device configuration, and FIG. 2 is a flow chart of control operation. (2) …… Peeling off section, (4) …… Storage tank, (5) ……
Sorting unit, (S) ... Storage amount detecting means, (100) ... Supply amount adjusting means.

Claims (1)

[Claims] 1. A storage tank (4) for storing grains supplied from a removing unit (2) capable of changing the amount of treatment per unit time and supplying the stored grains to a selecting unit (5). A storage amount detecting means (S) for detecting the amount, and a unit time of the removing unit (2) based on the detection information of the storage amount detecting means (S) so as to maintain the storage amount within a set range. A supply amount control device for a hulling machine, which is provided with a supply amount adjusting means (100) for automatically increasing / decreasing a processing amount per hit and for intermittently driving the sorting section (5), The storage amount detecting means (S) determines whether or not the storage amount is smaller than a set lower limit value, is larger or smaller than a set level set to a value larger than the set lower limit, and It is configured to be able to detect whether or not it is higher than the set level for starting operation of the sorting unit (5). The supply amount adjusting means (10
0) stops the sorting unit (5) as the storage amount becomes smaller than the set lower limit, and as the storage amount becomes larger than the set level for operation start, Only when the sorting unit (5) is driven, and only when the sorting unit (5) is in the driving state, the removing unit (2 ) Is decreased by the first set amount, and the processing amount per unit time of the removing unit (2) is set to the first set amount as the storage amount becomes larger or smaller than the set level. A supply amount control device in a huller configured to increase a second set amount set to a value larger than one set amount.