JPS6238037B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for automatically adjusting the inclination angle of a partition plate and a sorting plate in a swing type grain specific gravity sorting device.

A known configuration of the sorting device is as shown in FIG. 1 is a sorting plate with a rough, uneven surface (a rough plate surface with flow friction resistance), the planar shape is square, one side is the supply side 2, and the other side facing it is the discharge side 3. , the supply side 2 is sloped higher than the discharge side 3. Moreover, one side in the left-right direction with respect to the direction connecting the supply side 2 and the discharge side 3 is formed as a swinging upper side 4, and the other side is formed as a swinging lower side 5, and the swinging upper side 4 is inclined higher than the swinging lower side 5. Said sorting plate 1
is supported on the underframe 6 by diagonal rods 7 and 8,
When the eccentric wheel 9 is rotated, it swings back and forth as shown by the arrow W. Further, in the known sorting plate 1, the inclination angle α of the swinging upper side 4 and the swinging lower side 5 can be adjusted. The adjustment method is performed by tilting the entire underframe 6 or by moving the lower end D of the diagonal rod 8 up and down in an arbitrary manner. In Figure 1, when mixed grains consisting of brown rice and unhulled rice are fed near point P, the heavy brown rice drifts along the shaking side 4 as shown by arrow A due to the specific gravity, and the unhulled rice, which is lighter than the brown rice, drifts. The mixed rice flows along the swinging side 5 as shown by arrow B, and the unseparated mixed rice flows in the middle as shown by arrow C. Therefore, partition plates 10, 1 are provided on the discharge side 3.
1, the brown rice outlet 12 will be located on the rocking side 4.
An unhulled rice outlet 13 is formed on the swinging side 5, and a mixed rice outlet 14 is formed in the middle thereof (see also FIG. 2).

However, the mounting positions of the known partition plates 10 and 11 are as follows:
It is not fixed, but is installed so that it can be slid in the left and right directions depending on the state of drift.

However, the adjustment of the partition plates 10 and 11 is as follows:
Because it has to be done frequently during work,
In that respect, it is troublesome.

The partition plates 10 and 11 of the present invention are naturally attached so that they can be adjusted in the left and right directions, but the adjustment is not manually performed with the naked eye as in the past, but is automatically adjusted using a sensing body. Further, the vertical movement of the lower end D of the diagonal rod 8 is also automatically performed using a limit switch.

That is, as shown in FIG.
In the flow path 15 of the brown rice taken out, there is a branch flow path 1.
A chute 17 is provided in the branch channel 16 to form a part where the brown rice group flowing down from the brown rice outlet 12 flows in a layer, and a photo sensor 19 is installed near the discharge end 18 of the chute 17. An unhulled rice detector 21 consisting of a gland 20 and the like is attached to detect whether or not unhulled rice is mixed in the brown rice taken out from the brown rice outlet 12.

Of the partition plates 10 and 11 provided on the discharge side 3 of the sorting plate 1, the partition plate 10 is installed between the brown rice outlet 12 and the mixed rice outlet 14.
is attached to a rotating threaded rod 22 that is mounted between the swinging upper side 4 and the swinging lowering side 5 (in the left-right direction), and when the threaded rod 22 rotates forward or reversely, the partition plate 10 is attached to the swinging upper side 4 or the swinging lower side 5. Formed so as to move to side 5. 23 in Figure 2
2 is a threaded portion of the threaded rod 22, and 24 is a threaded cylinder that fits into the threaded portion 23 and is fixed to the partition plate 10. A forward/reverse motor 25 is attached to the threaded rod 22,
The motor 25 is connected to the photo sensor 19 via an arithmetic circuit 26. An upper limit switch 27 and a lower limit switch 28 are arranged on the left and right sides of the partition plate 10, respectively. The limit switches 27 and 28 are attached to a side wall surrounding the discharge side 3 or the like. The lower shaft rod 29 of the diagonal rod 8 (the part indicated by the arrow D in FIG. 1) is not fixed to the underframe 6, and the opening/closing arm 3 is opened in an inverted eight shape.
0.30'. the arm 30,
The upper ends of the shafts 30' are each pivotally fixed to the shaft rod 29, and the lower ends thereof are respectively pivotally mounted to screw tubes 32, 32' which are screwed into adjusting screw rods 31 provided parallel to the shaft rod 29. The adjusting screw 31 has a threaded portion 3 to the right from the center.
3 and a left-hand threaded portion 34 are formed, respectively, and a forward/reverse rotation motor 35 is attached to one end. The limit switches 27 and 28 are connected to the motor 35 via timers 36 and 37.

The arithmetic circuit 26 does not have a complicated configuration, and a very ordinary one is used.

FIG. 3 shows an example of the arithmetic circuit 26 installed between the detection body 21 and the motor 25, and a timer 3.
8, 39 and a preset counter 40 are installed. The detection body 21 outputs a pulse signal every time there is unhulled rice flowing through the chute 17. Timer 38 indicates the set time to preset counter 40. Therefore, the preset counter 40 counts the number of unhulled rice within the time set by the timer 38, and when the set number is reached (for example, 3 grains), it energizes the motor 25 to rotate in the normal direction. , the motor 25 is rotated normally to move the partition plate 10 in four directions on the swinging side. timer 3
Reference numeral 9 introduces the pulse as a reset output, and if there is no pulse at all within the time set by the timer 39, the motor 35 is energized in the reverse direction.

Since the present invention has the above configuration, it is operated unmanned, and a part of the brown rice taken out from the brown rice outlet 12 flows into the branch channel 16 formed in the channel 15 (the entire amount in the channel 15 (Since it is difficult to measure the current, a branch flow path 16 is formed.) When the flow is rectified by the chute 17 and then discharged from the discharge end 18, the photo sensor 19 and the back ground 20
The amount of unhulled rice mixed in the brown rice group can be accurately detected by the unhulled rice detection body 21 consisting of the unhulled rice detector 21. Therefore,
During the time set by the timer 38, the pulse signal is applied to the preset counter 40, and when the number (for example 3) reaches the set number, the motor 25 is energized for forward rotation, and
The threaded rod 22 is rotated in the forward direction for a short period of time, for example, about one second, which is set by a timer 41, and the partition plate 10 is moved to the swinging side 4. Therefore, the partition plate 10 depends only slightly on the limit switch 27 side. Even in this state, when the unhulled rice still flows on the chute 17, the same action is repeated, and eventually the grains flowing on the chute 17 are automatically adjusted to be only brown rice grains, and no unhulled rice is in the flow path 15. No more mixing. However, by repeating the same action as described above, the partition plate 10 may eventually collide with the limit switch 27, but in that case, the limit switch 27 energizes the motor 35 for the time set by the timer 37. , rotate the adjusting screw 31 in the normal direction, open the inverted eight-shaped opening/closing arms 30, 30', and open the shaft rod 29.
is moved downward to increase the angle of inclination α to prevent unhulled rice from getting mixed in. In the finished brown rice,
If there is no unhulled rice mixed in, the detector 21 will not generate any pulses, so there will be no pulses within the time set by the timer 39. Therefore, the motor 25 will be reset and the motor 25 will be energized in the reverse direction. given, the screw rod 22 is reversed for a short time set by the timer 42, the partition plate 10 is moved to the swinging side 5, the width of the brown rice outlet 12 is maximized, and the brown rice is efficiently taken out. In this case, the action of the limit switch 28 is opposite to that described above.

The present invention has the above-described configuration and operation, and in particular, installs an unhulled rice detector 21 capable of detecting unhulled rice in the flow path 15 of the brown rice taken out from the brown rice outlet 12,
The detector 21 is configured to automatically move and adjust the position of the partition plate 10 between the brown rice outlet 12 and the mixed rice outlet 14, and limit switches 27 and 28 are activated by the movement of the partition plate 10. Since the inclination angle α of the sorting body 1 is automatically adjusted, it is possible to achieve the effect of realizing a sorting device that exhibits its maximum capacity through unmanned operation.

[Brief explanation of the drawing]

FIG. 1 is a front view of the oscillating grain specific gravity sorting device, FIG. 2 is an exploded front view of the present invention, and FIG. 3 is a circuit diagram. Explanation of symbols, 1... Sorting plate, 2... Supply side, 3
...Discharge side, 4...Swinging side, 5...Swinging down side, 6...
...Underframe, 7,8... Oblique rod, 9... Eccentric wheel, 10,
11... Partition plate, 12... Brown rice outlet, 13...
Unhulled rice outlet, 14... Mixed rice outlet, 15... Channel, 16... Branch channel, 17... Shoot, 18...
...Discharge end, 19...Photo sensor, 20...Background, 21...Paddy rice detector, 22...
Rotating threaded rod, 23... threaded portion, 24... threaded tube,
25...Forward/reverse motor, 26...Arithmetic circuit, 2
7, 28...Limit switch, 29...Shaft rod,
30, 30'... Opening/closing arm, 31... Adjusting screw rod, 32, 32'... Spiral cylinder, 33... Right threaded part,
34...Left threaded part, 35...Forward/reverse motor, 3
6, 37, 38, 39...Timer, 40...Preset counter, 41,42...Timer,
α...Inclination angle, D...Lower end.

Claims (1)

[Claims] 1 One side is the supply side and the other side is the discharge side, and one side in the left and right direction with respect to the direction connecting the supply side and the discharge side is the swinging side and the other side is the swinging side, and the supply side is higher than the discharge side and is lower than the swinging side. A sorting plate made of a rough-faced plate tilted in two directions is reciprocated diagonally up and down from the lower shaking side to the upper shaking side, and the mixed grains of unhulled rice and brown rice fed onto the sorting plate are shaken due to the difference in specific gravity. In the oscillating type grain specific gravity sorting device that separates grains by distributing the flow to the upper side and the oscillating lower side, the inclinations of the oscillating upper side and the oscillating lower side of the sorting plate are formed to be freely adjustable by an angle adjustment device,
By providing a partition plate on the discharge side of the sorting plate, a brown rice outlet is provided on the shaking upper side, a paddy rice outlet is provided on the shaking lower side, and a mixed rice outlet is provided between the brown rice outlet and the unhulled rice outlet. The partition plate between the brown rice take-out port and the mixed rice take-out port is configured to automatically move between the shaking up side and the shaking down side by an automatic moving device, and the left and right sides of the partition plate have Each of them is provided with a limit switch, a paddy rice detection body consisting of a photo sensor or the like is attached to a desired position in the flow path of the brown rice taken out from the brown rice outlet, and the detection body and the automatic moving device are connected in a related manner; An automatic adjustment device for the inclination angle of a partition plate and a sorting plate in an oscillating grain specific gravity sorting device in which each of the limit switches and the angle adjustment device are connected in a related manner.