JPH07222930A - Unpolished rice sorting apparatus - Google Patents

Abstract

PURPOSE:To enhance work efficiency regardless of the completion or continuation of work by providing an unpalished rice sorting apparatus with a means stopping a drive mechanism after a definite time from a point of time when the level of a mixed rice tank becomes a set level or less and further a selection mode selecting the function state and nonfunction state of the means. CONSTITUTION:A level detection sensor S detects such a state that the storage amt. in a mixed rice tank 4 becomes a set level or less. A stop and delay means T stopping the drive mechanism M2 of a sorter after a set time from this point of time is installed and the greater part of the mixed rice in the supply chute 4A from the tank 4 to the sorter 5 is returned to the sorter 5. At this time, a stop mode selection means S4 selecting whether the stop and delay means T is allowed to function is installed and, when the selection means S4 is changed over to the non-function state of the means, much mixed rice is left in the chute 4A but, in the function state of the means T, the remaining rice in the chute 4A is little and the sorter 5 is changed over to manual oaperation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brown rice sorting apparatus for sorting mixed rice of brown rice and paddy dehulled by a hulling device.

[0002]

2. Description of the Related Art A conventional brown rice sorting apparatus is, for example, as shown in Japanese Utility Model Publication No. 60-49936, in a mixed rice tank for storing the mixed rice of brown rice and paddy dehulled by a hulling device. A level detection sensor for detecting the storage amount is provided in the, and the drive motor of the sorting device is stopped when the storage amount in the tank becomes lower than a set level.

[0003] The sorting device is stopped because, when all the mixed rice in the tank is supplied to the sorting device, the layer becomes thin in the final stage and the sorting efficiency in the sorting device deteriorates. This is because the sorting device is manually operated for sorting.

[0004]

Conventionally, at the end of work, the drive motor of the sorting device is stopped immediately when it is detected that the storage amount in the tank has dropped below a set level. A large amount of mixed rice remains in the supply chute to the sorting device, and at the end of the work, the time required for switching the sorting device to manual and performing the sorting process becomes long, and there is a disadvantage that work efficiency decreases.

Therefore, as a means for solving the above drawbacks,
As a means to reduce the residual rice in the supply chute, it is possible to delay the stop time of the drive motor of the sorting device, but in such a case, when continuing to work, the time to accumulate a certain amount of mixed rice in the supply chute Becomes longer and the work efficiency at the time of continuing work decreases.

It is an object of the present invention to improve work efficiency regardless of whether work is completed or continued.

[0007]

A characteristic configuration of the present invention for achieving the above object is to detect a storage amount in a mixed rice tank for storing mixed rice of brown rice and paddy dehulled by a hulling device. A brown rice sorting device that provides a level detection sensor and stops the drive mechanism of the sorting device when the storage amount in the tank falls below a set level, and the storage amount in the mixed rice tank is set. A stop delay means for stopping the drive mechanism of the sorting device is provided after a set time from the time when the level detection sensor detects that the level is lower than or equal to the level, and the state in which the delay means operates and the state in which it does not function are selected. It is provided with a stop mode selecting means for performing the operation.

[0008]

[Function] When the level detection switch detects that the mixed rice in the mixed rice tank is below the set level, the driving mechanism of the sorting device is stopped through the stop delay means, so that the mixed rice tank moves to the sorting device. Most of the mixed rice in the supply chute for supplying the mixed rice will be supplied to the sorting device.

Further, if the stop mode selecting means for selecting the state in which the delay means operates and the state in which the delay means does not function is switched to the state in which the delay means does not function, the drive mechanism of the sorting device is stopped immediately and the supply chute is stopped. A lot of mixed rice will remain inside.

[0010]

As a result of the above construction, when the work is finished, the stop mode selection means is switched to a state in which the delay means functions so that the mixed rice is supplied from the mixed rice tank to the sorting device. The amount of rice remaining in the chute is reduced, and the time required for switching the sorting device to manual and shortening the sorting process can be shortened and the working efficiency can be improved.

Further, when the work is continued, the stop mode selecting means is switched to a state in which the delay means does not function, so that a lot of residual rice remains in the supply chute,
When the work is continued, the supply time to the sorting device can be shortened.

[0012]

EXAMPLE FIG. 1 shows an outline of a brown rice sorting apparatus. The paddy supplied to the paddy tank 1 is removed by a paddy hulling device 2 provided on the lower side of the paddy tank 1 for transportation. After the rice husks and rice husks have been removed by the wind sorting device 3, the rice is temporarily stored in the mixed rice tank 4.

Then, the grains stored in the mixed rice tank 4 are fed to a sorting device 5 having a plurality of upper and lower rocking plates 5a in a state where the outflow amount per unit time is adjusted to a set amount. It is supplied and sorted and collected by the sorting device 5 into three types of brown rice, mixed rice of paddy and brown rice, and paddy.

The mixed rice collected by the sorting device 5 is transported to the mixed rice tank 4 and sorted again, and the paddy is transported to the paddy tank 1 to be removed again.

The mixed rice in the mixed rice tank 4 is supplied to the selection device 5 at a predetermined supply speed via a supply chute 4A and a distributor 4B for supplying the mixed rice to the upper and lower selection plates 5a. .

An electromagnetically operated shutter 6 for stopping the grain supply from the paddy tank 1 to the paddy huller 2 is provided at the lower end of the paddy tank 1.

The structure of the hulling device 2 will be described. A pair of right and left rollers 7, 7 are positioned at a set interval, and are rotated in opposite directions with different peripheral velocities. It has become. That is, the rice husk is removed and removed by passing the rice husk between the rollers 7 having different peripheral speeds.

The shutter 6 of the paddy tank 1 and the front
Between the rollers 7 and 7, the feeding roll 8 and the huller are provided.
Swing-type supply amount adjustment for changing and adjusting the grain supply amount to the device 2
The knot plate 9 and the actuator for swinging the supply amount adjusting plate 9
Electric motor M as an eater ₁And the supply amount adjusting plate 9
Sensor S for detecting the opening degree of₀ And is provided
There is.

That is, the processing amount per unit time in the hulling device 2 can be changed and adjusted by changing and adjusting the opening degree of the supply amount adjusting plate 9.

Inside the mixed rice tank 4, an upper limit detection sensor S ₁ for detecting whether or not the storage amount is larger than the upper limit corresponding to the full state, and a lower limit for the storage amount corresponding to almost empty are provided. Lower limit detection sensor S ₃ for detecting whether it is small or not
And an intermediate detection sensor S ₂ between the two sensors S ₁ and S _3.
Is provided.

Each of the sensors S _{1 to} S ₃ 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, in the ON state, it is detected that the storage amount is above the sensor installation location, and the OF
In the F state, it is detected that the storage amount is below the sensor installation location.

That is, the three sensors S _{1 to} S ₃ are
This corresponds to the level detection sensor S that detects the storage amount of the mixed rice tank 4.

A microcomputer is used to control the operation of each part while automatically adjusting the grain supply amount to the hulling device 2 based on the detection information of the sensors S _{1 to} S ₃ . A controller C is provided.

That is, using the control device C, the processing amount per unit time of the hulling device 2 is determined based on the detection information of the level detection sensor S so as to maintain the storage amount within the set range. Automatically increase and decrease, and the sorting device 5
Drive will be interrupted.

Next, the operation of the controller C will be described.

First, based on whether the upper limit detection sensor S ₁ is OFF or ON, it is determined whether or not the storage amount of the mixed rice tank 4 has reached the upper limit.

When the upper limit sensor S ₁ is turned on and the storage amount of the mixed rice tank 4 reaches the upper limit, the shutter 6 of the paddy tank 1 is closed to supply the grain to the paddy huller 2. To stop.

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 ₃ is ON or OFF. To determine.

When the lower limit sensor S ₃ is turned off and the storage amount of the mixed rice tank 4 reaches the lower limit, the operation of the sorting device 5 is stopped.

When the storage amount is between the upper limit and the lower limit, the increase / decrease in the supply amount is determined based on the ON / OFF change of the intermediate detection sensor S ₂ .

That is, when the detection sensor S ₂ changes from OFF to ON, the supply amount is decreased, and when it changes from ON to OFF, the supply amount is increased. If there is no ON / OFF change, the current adjustment state is maintained.

Then, the control device C repeats each processing described above until the whole operation is completed.

That is, when the storage amount of the mixed rice tank 4 reaches the upper limit, if the grain supply is continued, it will overflow from the mixed rice tank 4, so the shutter 6 of the paddy tank 1 is closed. When the grain supply to the hulling device 2 is stopped and the lower limit is reached, if the sorting device 5 is operated in a state where the grain supply amount is insufficient, a sorting failure occurs,
The operation of the sorting device 5 is stopped.

The electric motor M ₂ which is the drive mechanism of the sorting device 5 is connected to the control device C via a drive circuit D, and the control device C also stops the electric motor M ₂ . A timer T as a means for delaying the timer T is built in, and a changeover switch S ₄ as a stop mode selecting means for selecting a state in which the timer T is made to function and a state in which the timer T is not made to function is connected.

Then, the timer T is arranged so that the level of the mixed rice in the supply chute 4A is the distributor 4 at the starting end of the sorting device 5.
The time is set to be long enough to reach the B level L.

The changeover switch S ₄ is provided at the final stage when the grain supply from the hulling device 2 is stopped and the work is finished.
Select operation depending on whether or not to continue work. That is, when continuing the work, the changeover switch S ₄ is operated so that the sorting device 5 is immediately stopped without the timer T functioning, and when the work is finished, the timer T is functioning. The changeover switch S ₄ is operated so as to stop the sorting device 5 after a fixed time, and the stop control operation of the electric motor M ₂ is shown in the flowchart of FIG.

[Other Embodiments] In the above embodiment, the upper limit detection sensor S ₁ and the intermediate detection sensor S ₂ are provided so that the storage amount in the tank 4 is maintained within the set range. Lower limit detection sensor S that stops the electric motor M ₂ of the sorting device 5 one by one when the storage amount of
_It may be provided with only ₃ . A mechanical timer may be used as the stop delay means.

It should be noted that although reference numerals are given in the claims for facilitating the comparison with the drawings, the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Block diagram of brown rice sorting device configuration

[Figure 2] Flow chart

[Explanation of symbols]

2 Hulling device 4 Mixed rice tank 5 Sorting device M ₂ Sorting device drive mechanism (electric motor) S ₄ Stop mode selection means (changeover switch) T Stop delay means (timer)

Claims (1)

[Claims] 1. A level detection sensor (S) for detecting the storage amount is provided in a mixed rice tank (4) for storing a mixed rice of brown rice and paddy dehulled by a hulling device (2), and the tank A brown rice sorter for stopping the drive mechanism (M ₂ ) of the sorter (5) upon detection that the storage amount in (4) has fallen below a set level, in the mixed rice tank (4) Stop means (T) for stopping the drive mechanism (M ₂ ) of the sorting device (5) after a set time from the time when the level detection sensor (S) detects that the storage amount of the liquid has fallen below a set level. And a stop mode selecting means (S ₄ ) for selecting whether the delay means (T) is functioning or not functioning.