JPH0256951B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for shaking grains, which is equipped with a swinging sorting device that swings and drives sorting plates tilted back and forth and left and right to sort grains after hulling, for example, into brown rice and paddy. This relates to a sorting machine.

Conventionally, as shown in Japanese Patent Publication No. 55-16711, there has been a technology that detects the amount of unsorted grains supplied to a sorting plate, switches a brown rice removal shutter, and removes brown rice when the amount of unsorted grains supplied exceeds a predetermined value.

However, in the conventional technology, brown rice is taken out through the shutter regardless of the sorting condition if the unsorted grain supply amount is above a predetermined value, so even if the mixing ratio of paddy or wheat increases, the brown rice cannot be taken out. However, there were problems such as paddy or wheat being easily mixed into the brown rice that was removed.

In addition, as shown in Japanese Patent Application Laid-Open No. 55-81769, there is a technique in which a partition plate is provided to take out the brown rice, and the position of the partition plate is adjusted to prevent paddy or wheat from getting mixed into the unpolished rice. However, in a structure in which the partition plate is moved until unloading of brown rice is stopped to prevent contamination with paddy, etc., the adjustment movement range of the partition plate becomes large, making it easier to adjust the partition plate in response to sudden changes in sorting conditions. In a structure in which the adjustment function of the partition plate is improved by restricting the movement range of the partition plate, the amount of mixed paddy etc. increases beyond the movement limit of the partition plate, resulting in unmixed paddy or wheat in the removed brown rice. There were problems such as easy contamination with other substances.

However, the present invention is equipped with a grain sensor that detects the grain sorting situation on the upper surface of the sorting plate, and a limit switch that restricts the movement of the partition plate for removing brown rice from the brown rice take-out side in the shaking direction of the sorting plate, and A grain oscillating sorter is provided with a shutter for switching the direction of taking out brown rice from the partition plate on the side of the mixed rice discharge port, and a switching member for switching the shutter to the mixed rice discharge port side, wherein the switching member is operated with a delay. A brown rice removal stop switch is provided, and the brown rice removal stop switch is interlocked and connected to the limit switch to operate the limit switch by moving the partition plate to the uppermost side of the swing, or to detect paddy by a grain sensor in the brown rice layer on the upper side of the sorting plate. The present invention is characterized in that the shutter is switched to a brown rice removal halt state and operated in conjunction with at least one of the operations.

Therefore, the adjustment movement range of the partition plate can be adjusted to an appropriate size using the limit switch, and the adjustment function of the partition plate can be maintained and the operability can be easily improved.
In addition, the brown rice removal stop switch detects that the amount of brown rice that can be removed by the partition plate is at its limit and activates the shutter, so even if the amount of unsorted grains supplied to the sorting plate exceeds a predetermined value, brown rice removal is not possible. This prevents paddy, wheat, etc. from getting mixed into the removed brown rice, and the grain sensor detects paddy in the brown rice layer on the upper side of the sorting plate and operates the shutter, so the partition plate can be adjusted. Even if the amount of paddy etc. suddenly increases on the brown rice removal side to the extent that the process is delayed, the removal of brown rice can be stopped to prevent the paddy or wheat etc. from getting mixed into the removed brown rice, making it unnecessary to adjust the partition plate with high precision. and can be safely handled.

An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an overall schematic side view of the swing sorting machine according to the present invention, and FIG. 2 is a plan view thereof. A swinging sorting device equipped with a plurality of sorting plates 3 in multiple stages for sorting grain into brown rice and paddy, 4 a supply hopper that stores the grain after hulling, and 5 a sorting plate for sorting the grains in the hopper 4. 3 is a distribution chute for discharging the grains after sorting, and 6 is a discharge gutter for discharging the grains after sorting. The structure is such that brown rice and paddy are separated and sorted by the oscillating motion of 2 and taken out to a delivery chute 7 via a discharge gutter 6.

As shown in FIGS. 3 and 4, the sorting device 2
Each sorting plate 3 is provided in a plurality of stages on a frame 8, and the upper surface of the sorting plate 3 is formed into a resistive rough surface having small waveforms or a plurality of depressions.
The hopper 4 is formed to have a flow angle of an inclination angle β in the front and back (that is, right and left in FIG. 4) and an inclination angle α in the left and right sides with respect to the horizontal plane of While the grains distributed and supplied to the upper end of the inclination flow down to the lower end of the inclination, their oscillating motion causes the brown rice layer A to be on the left oscillating up side of the sorting plate 3 and the paddy on the right oscillating down side. The structure is such that the layer B and the mixed rice layer C in the middle are separated and flowed down.

In addition, at the downstream end of the sorting plate 3, there is a brown rice layer A.
A brown rice partition plate 9 that separates the mixed rice layer C from the mixed rice layer C and a paddy partition plate 10 that separates the mixed rice layer C and the paddy layer B are provided, respectively, and the brown rice group separated by the brown rice partition plate 9 is separated from each flow guide plate. Discharge gutter 6 via 11, 12a
The mixed rice group separated by the brown rice partition plate 9 and the paddy partition plate 10 is transferred to the brown rice discharge port 13 of each flow guide plate 12.
Mixed rice discharge port 15 of discharge gutter 6 via b, 14a
Furthermore, the rice grains separated by the rice partition plate 10 are dropped into the rice discharge port 16 of the discharge gutter 6 via the downstream guide plate 14b, and taken out to the delivery chute 7.

Further, the brown rice partition plate 9 is movably connected to a partition adjustment motor 17 attached to the frame body 8 via a screw shaft 18 and an engaging member 19, while
The rice grain partition plate 10 is attached and connected to the frame 8 via a long hole 20 and a screw member 21 so as to be manually adjustable.

As shown in FIG. 5, the brown rice falling guide port 23 formed by the guide plate 11 and the flowing grain plate 22 below the brown rice side of the brown rice partition plate 9 is switched to the brown rice and mixed rice discharge ports 13 and 15. Freely open/close shutter 24
is provided via a rotating shaft 25, and this switching operation is configured to be performed by a handle 26 or a solenoid 27.

A rack 29 for detecting the position of the partition plate and a rod 30 are attached to the brown rice partition plate 9 via a fixing member 28, and while the rack 29 is engaged with a pinion gear 32 that is interlocked with a potentiometer 31, the partition plate 9 When the motor 1 reaches the end of its left and right movement, the motor 1 is brought into contact with the rod 30.
Stop switches 33 and 34 for stopping the drive of the rod 30 are disposed on the left and right sides of the rod 30.

Furthermore, a photoelectric paddy sensor 36 is installed at the upper end of the brown rice partition plate 9 via a fixed mounting plate 35, and the sensor 36 is attached to the mounting plate 35 via a long hole 37 and a bolt 38 so as to be adjustable in left and right movement. The grains flowing down the mixed rice side of the partition plate 9 are irradiated with light and the amount of reflected light is detected.

Next, automatic control of the brown rice partition plate 9 will be explained with reference to FIG.

The paddy sensor 36 is electrically connected to a comparator 43 via a differential amplifier 41 having a buffer circuit 39 and a partition plate sensitivity regulator 40, and a relay switch 42a of a relay 42, so that the paddy amount detection output of the sensor 36 and the partition plate are connected electrically. The comparator 43 outputs a forward/reverse signal for the motor 17 to match the output of the potentiometer 31 that detects the position of the motor 17, and the forward/reverse drive circuit 44 for the motor 17 is connected to the relay switch 45a of the relay 45 and The reverse drive circuit 46 of the motor 17 is electrically connected to the comparator 43 via the switch 33 and the relay switch 47a of the relay 47 and the switch 34, so that when the relay switch 42a is turned on, the paddy sensor is activated. 36
and energize the drive circuits 44 and 46 of the motor 17,
Depending on the change in the output of the sensor 36 due to the increase or decrease in the amount of paddy detected, the motor 17 is rotated forward or reverse as appropriate to move the partition plate 9 to the brown rice side or the paddy side,
Output of the potentiometer 31 and sensor 36
The drive of the motor 17 is stopped when the outputs of the rice are balanced, and the amount of paddy contained in the mixed rice at this detection position is controlled to be constant.

In addition, manual switches 48 and 49 for forward and reverse rotation of the motor with manual priority are connected to the relays 45 and 47, respectively, while these switches 48 and 49
are connected to one NAND circuit 51 of the flip-flop circuit 50 via a not circuit 52, and an automatic partition control switch 55 is connected to the other NAND circuit 53 of the flip-flop circuit 50 via a not circuit 54. The output side of the circuit 50 is connected to the relay 42 via a buffer circuit 56, and also connected to each automatic and manual indicator lamp 57, 58, so that when the manual switches 48, 49 are off, the automatic switch 5 is turned off.
5, the automatic indicator lamp 57 is turned on, the relay 42 is excited, the relay switch 42a is turned on, and the motor 17 is automatically controlled in the forward and reverse directions, while the manual switch 48, When either one of the switches 49 is turned on, the manual indicator lamp 58 is turned on, and the relay switch 42a is turned off to give priority to these switches 48 and 49.
5, 47 are energized and relay switches 45a, 47 are activated.
The motor 17 is configured to be rotated in the forward and reverse directions by manual operation by switching the switch a to the circuit side of the switches 48 and 49.

Furthermore, a grain supply gutter 59 at the bottom of the hopper 4
A power source 61 operates a common terminal 60c of a grain sensor 60 that is incorporated into the grain sensor 60 to detect the supply amount of unsorted grains.
At the same time, the normally closed and normally open terminals 60b and 60a of this sensor 60 are connected to the above-mentioned knot circuit 52,
54 respectively to the input side, so that when the partition plate 9 is automatically controlled, the grain supply amount becomes less than a certain level,
The sensor 60 no longer detects this, and the sensor 6
0 is switched to the normally closed terminal 60b side, the output from the operating power source 61 is switched to the NOT circuit 5.
2, the relay 42 is deenergized via the flip-flop circuit 50, and the relay switch 42a is turned off, thereby interrupting the automatic control.

On the other hand, the normally open terminal 60b of the sensor 60 is connected to one NAND circuit 65 of the flip-flop circuit 64 via a buffer circuit 62 and a not circuit 63, and a buffer circuit 67 and a not circuit are connected to the other NAND circuit 66 of the flip-flop circuit. 6
A relay 70 is connected to the output side of the NAND circuit 65 of the flip-flop circuit 64 via a buffer circuit 69. A normally open reset switch 71 connected to the normally closed switch 33 that connects the relay switch 70a of the relay 70 between the operating power source 61 and the relay 45 is connected between the operating power source 61 and the input side of the buffer circuit 67. As described above, when the grain supply amount is below a certain level and the sensor 60 is switched to the normally closed terminal 60b side, the operating power source 6
1 is applied to one NAND circuit 65 of the flip-flop circuit 64 to excite the relay 70,
By turning on the relay switch 70a, the normal rotation drive circuit 44 is activated via the relay switch 45a, and the motor 17 is rotated in the normal direction to move the partition plate 9 to the maximum movement position on the brown rice side. are doing.

Further, the operating solenoid 27 of the switching shutter 24 is connected to the reset switch 71 via the normally closed limit switch 72 and the operation delay circuit 73, so that the partition plate 9 moves to the maximum movement end on the brown rice side and the switch 33 is activated. When the reset switch 71 is turned on in conjunction, the delay circuit 7
3, the solenoid 27 is energized to switch the shutter 24 after a certain set time. The limit switch 72 is installed on the back side of the guide plate 11 as shown in FIG. The actuator 72a is operated to turn off the switch 72 and de-energize the solenoid 27.

As is clear from the above description and Figure 6,
It is equipped with a grain sensor 36 that is a grain sensor that detects the grain sorting status on the upper surface of the sorting plate 3, and a stop switch 3 that is a limit switch that restricts the movement of the sorting plate 3 in the swinging direction to the brown rice removal side of the partition plate 9 for removing brown rice.
3 and brown rice outlet 13 side or mixed rice outlet 15
There is a shutter 24 on the side that changes the direction of taking out brown rice from the partition plate 9, and the shutter 24 is connected to the mixed rice discharge port 1.
The grain oscillating sorter is provided with a solenoid 27, which is a switching member that switches the solenoid 27 to the No. switch 33
At least one of the operation of the stop switch 33 by moving the partition plate 9 to the uppermost side of the swing, or the operation of detecting paddy by the paddy sensor 36 in the brown rice layer A on the upper side of the sorting plate 3, which will be described later. In conjunction with this, the shutter 24 is switched to a state where unremoval of brown rice is stopped.

In the figure, reference numeral 74 indicates an actuating plate connected to the actuator rod 27a of the solenoid 27;
77 is a swing plate fixed to the rotating shaft 25 connected to the operating plate 74 via a pin 76, and 77 is the swing plate 67.
It is a fulcrum-crossing spring that is tensioned on the fulcrum.

The present embodiment is constructed as described above, and the grains supplied from the hopper 4 to each sorting plate 3 via the distribution chute 5 are affected by the difference in specific gravity and Due to the rocking motion of the sorting plate 3 and the rough sorting surface of the sorting plate 3, the brown rice layer A is concentrated on the upper side of the shake at the angle of inclination α, the paddy layer B is concentrated on the lower side of the shake, and the mixed rice layer C is concentrated in the middle. It is sorted into the state that will be used. The brown rice is separated by the partition plates 9 and 10 at the end of the flow and taken out respectively, and the position of the brown rice partition plate 9 is controlled by the paddy sensor 36 detecting mixed rice.

In other words, if the amount of paddy contained in the mixed rice flowing down below the current paddy sensor 36 position is larger than usual and the paddy mixing ratio becomes higher than a certain reference value,
When detecting the difference in light intensity reflection between brown rice and paddy, the reflectance increases in proportion to the amount of paddy mixed, so the detected value by the sensor 36 also increases, and the difference between the output of the potentiometer 31 and the output of the potentiometer 31 increases. A signal is output from the comparator 43 to generate an output difference and to operate the forward rotation drive circuit 44. As a result, the partition plate 9 is moved toward the brown rice side, and the partition width T on the brown rice side is automatically adjusted to be small, thereby preventing paddy from entering the brown rice side.

On the other hand, contrary to the above, when the paddy mixing ratio of this mixed rice is lower than the reference value and the detected value of the amount of reflected light detected by the sensor 36 also becomes small, a signal is sent from the comparator 43 to activate the reverse drive circuit 46. is output, the partition plate 9 is moved toward the paddy side, and the partition width T on the brown rice side is automatically adjusted to a large value, thereby appropriately increasing the amount of brown rice taken out.

During this operation, if the supply of unsorted grains becomes insufficient and the grain layer on the sorting plate 3 becomes thin, the oscillating movement of the sorting plate 3 and the Even with the rough sorting surface, the particles are concentrated on the swinging side as a whole, resulting in an inconvenience that results in poor sorting. Therefore, when the grains in the hopper 4 become insufficient and the flow rate of grains flowing through the supply gutter 59 becomes below a certain level, and the sensor 60 switches to the normally closed terminal 60b side, the manual switches 48 and 49 are operated. Similarly, the output from the operating power supply 61 is applied to the NOT circuit 52, and the relay 42 is deenergized via the flip-flop circuit 50, thereby interrupting its automatic control. At the same time, the operating power supply 6 is connected to one NAND circuit 65 of the flip-flop circuit 64.
1 is applied to excite the relay 70 and turn on the relay switch 70a. As a result, the relay 45 is energized and the relay switch 4
5a to this circuit side, the forward rotation drive circuit 4
4 is activated to rotate the motor 17 in the normal direction, and the partition plate 9 is moved to the maximum limit on the brown rice side where the switch 33 is activated, thereby minimizing the partition width T on the brown rice side. When the partition plate 9 moves to the maximum brown rice side, the rod 30, which moves together with the partition plate 9, activates the switch 33 to stop driving the motor 17, and activates the reset switch 71 to reset the flip-flop circuit. The output of the operating power source 61 is applied to the other NAND circuit 66 of the NAND circuit 64 to de-energize the relay 70 and turn off the relay switch 70a. Further, after the predetermined set time of the delay circuit 73 has elapsed since the reset switch 71 is activated, the solenoid 27
is excited, the shutter 24 is switched, and the brown rice separated and taken out by the partition plate 9 is discharged into the mixed rice discharge port 15. When the shutter 24 is switched, the limit switch 7
2 operates to release the excitation of the solenoid 27.

Then, when the grains are filled into the tuber 4 again and the amount of grains flowing through the supply gutter 59 increases beyond a certain level, the sensor 60 is switched to the normally open terminal side by the flow of grains. Then, the output from the power source 61 is applied to the knot circuit 54, the relay 42 is again excited via the flip-flop circuit 50, the relay switch 42a is turned on, and the partition plate 9 is returned to automatic control. The switching plate 24 is switched to the original brown rice discharge side in a state in which the partition plate 9 has moved from the maximum movement end on the brown rice side to the paddy side.

In the above embodiment, one paddy sensor 36 is installed above the mixed rice layer C, but the number and installation location are not limited, and the movement of the partition plate 9 can also be adjusted manually. good.

Further, a paddy sensor 36 is installed on the side of the brown rice layer A, and the sensor 36 is linked to the shutter 24, so that when paddy is mixed into the brown rice layer A and the sensor 36 detects this, the shutter 24
It is also possible to switch the mixed rice discharge port 15 side to the mixed rice discharge port 15 side as in the above-mentioned embodiment.

As is clear from the above embodiments, the present invention provides a grain sensor 36 for detecting the grain sorting situation on the upper surface of the sorting plate 3.
In addition, a limit switch 33 for regulating the movement of the sorting plate 3 in the swinging direction of the brown rice removal side of the partition plate 9 for removing brown rice, and a limit switch 33 for regulating the movement of the brown rice removal side from the partition plate 9 on the brown rice discharge port 13 side or the mixed rice discharge port 15 side are provided. A shutter 24 to be switched, and a switching member 27 to switch the shutter 24 to the mixed rice discharge port 15 side.
A grain oscillating sorter is provided with a brown rice removal stop switch 71 for delaying activation of the switching member 27, the brown rice removal stop switch 71 is interlocked and connected to the limit switch 33, and a partition plate 9 is provided.
The shutter 24 is switched to a state where unloading of brown rice is stopped in conjunction with at least one of the operation of the limit switch 33 due to the movement of the shaker to the uppermost side of the shaker, or the operation of detecting paddy by the grain sensor 36 in the brown rice layer A on the upper side of the shaker of the sorting plate 3. The adjustment movement range of the partition plate 9 can be set to an appropriate size by the limit switch 33, and the adjustment function of the partition plate 9 can be easily maintained and the operability can be improved. Since the brown rice removal stop switch 71 detects that the removal of brown rice by the plate 9 is at its limit and operates the shutter 24, even if the amount of unsorted grains supplied to the sorting plate 3 is more than a predetermined amount, the brown rice removal is stopped. Not only can the removal be stopped to prevent paddy or wheat from getting mixed into the removed brown rice, but also the grain sensor 36 detects paddy in the brown rice layer A on the upper side of the sorting plate 3 and operates the shutter 24. , partition plate 9
Even if the amount of paddy etc. increases rapidly on the brown rice removal side to the extent that the adjustment is delayed, the removal of brown rice can be stopped and the paddy or wheat etc. can be prevented from getting mixed into the removed brown rice. It can be handled safely by eliminating the need for

[Brief explanation of the drawing]

Figure 1 is an overall side view, Figure 2 is a plan view of the same, Figure 3
4 is a front sectional view of the main part, FIG. 4 is a side sectional view of the main part, FIG. 5 is a partially enlarged explanatory view of the main part, and FIG. 6 is an electric circuit diagram of the main part. 2... Oscillating sorting device, 3... Sorting plate, 9... Partition plate,
13...Brown rice outlet, 15...Mixed rice outlet, 24...
Switchable shutter.

Claims (1)

[Claims] 1 includes a grain sensor 36 that detects the grain sorting status on the upper surface of the sorting plate 3, and a limit switch 33 that restricts the movement of the sorting plate 3 in the shaking direction to the brown rice removal side of the partition plate 9 from which brown rice is taken out, and the brown rice discharge port 13 side. Or, in a grain oscillating sorter, which is provided with a shutter 24 on the side of the mixed rice discharge port 15 that switches the direction of taking out brown rice from the partition plate 9, and a switching member 27 that switches the shutter 24 to the mixed rice discharge port 15 side. , a brown rice removal stop switch 71 is provided which delays activation of the switching member 27, and the brown rice removal stop switch 71 is interlocked and connected to the limit switch 33, so that the limit switch 33 is operated by the movement of the partition plate 9 to the uppermost side, or the sorting plate 3 is moved. Upper brown rice layer A
A grain oscillating sorter characterized in that the shutter 24 is switched to a brown rice removal halt state and operated in conjunction with at least one of the paddy detection operations performed by the grain sensor 36.