JPH0725262Y2 - Rotation sorter - Google Patents

Description

[Detailed Description of the Invention] "Industrial field of application" The present invention relates to a rotary sorting cylinder structure in which, for example, scraped rice is separated and sorted into brown rice and paddy, and is separated and sorted by rotating the rotary sorting cylinder. The present invention relates to a rotary sorting device in which carefully selected grains such as brown rice are received by a gutter in the sorting cylinder.

"Prior Art" For example, the one described in Japanese Patent Laid-Open No. 61-181581 has a means for controlling the number of rotations of the selection cylinder based on the detection of a sensor provided on the gutter.

“Problems to be solved by the invention” In such a structure in which a detection sensor is provided on a gutter, it is impossible to avoid accumulation of bran and dust and it is impossible to keep the sensor function accurate. .

Therefore, according to the present invention, a piezoelectric grain pressure sensor for detecting the falling position state of the selected grains falling on the gutter is provided, and an electric charge is appropriately applied to the grain sensor. A vibration generation circuit for generating vibration is provided to the sensor.

[Operation] Therefore, according to the present invention, by applying an electric charge to the grain pressure sensor when necessary, mechanical vibration is generated in the vibrator inside the grain pressure sensor by the electrophoretic effect. Dust and the like accumulated on the sensor surface can be removed, and as a result, the sensor function can be favorably and stably maintained for a long period of time without impairing the sensor function.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings. First
The figure is a control circuit diagram of the rotary sorting cylinder, and FIG. 2 is a sectional view of the whole. In the figure, (1) is a paddy hull, (2) is a supply hopper for loading paddy, (3) and (4) are a pair of debarking rolls provided below the hopper (2), (5) Is a grain feed valve for adjusting the amount of grain fed to the rolls (3) and (4), (6) is a shutter that opens and closes the lower part of the hopper (2), (7) is the debarking roll (3) ( It is a debarking rate motor which is a debarking adjusting member for adjusting the gap of 4), and is constructed so as to continuously debark paddy.

In the figure, (8) is a wind-selecting section on which the hulling section (1) is mounted, and a machine casing (9) forming the wind-selecting section (8), a brown rice removing gutter (10), and a brown rice conveyor (11). ), A small rice pick-up gutter (12) and a small rice receiver (13) for carrying out the small rice separated from the brown rice falling on the gutter (10), and a grain scattering plate (1).
4) and the grain removing roll (3) through the grain board (15)
(4) Sliding-off rice pick-up gutter (16) and sliding-off rice conveyor (17), which faces downward and receives the scraped-off rice (brown rice and paddy).
A grate pick-up gutter (18) that receives the grit separated from the scraped rice.
And a rice cake receiver (19) and a suction / exhaust dust fan (20) for discharging the rice husk separated from the scraped rice to the outside of the machine, and configured to separate the rice husk from the scraped rice.

In the figure, (21) is placed on the wind selecting section (8) and the hulling section (1)
, A sorting cylinder (22) for continuously rotating in one direction to slide down the rice to separate it into brown rice and paddy, and a supporting roll (23) for rotatably supporting each of the drums (22). ) ...
And a selection cylinder (22) for rotation control, which drives the cylinder (22) to adjust the rotation speed in one direction via the
A supply gutter (25) and a supply conveyor (26) to be inserted into
By the brown rice gutter (27) and the brown rice conveyor (28) arranged in parallel with each other, the paddy-raising blade (29) provided at the end of the sorting inside the sorting cylinder (22), and the blade (29). It has a return paddy returning gutter (30) that sends the scooped paddy to the hopper (2), and a chute (31) that connects the end of the brown rice receiving conveyor (28) to the brown rice picking gutter (10). It is constructed so that it can be separated into brown rice and paddy respectively.

Then, the brown rice lifting sloa (32) for communicating the lower end side to the brown rice conveyor (10) and the lower end side for communicating with the scraped-off rice conveyor (17) so that the upper end side faces the feeding start end of the supply conveyor (26). Sliding down rice lifting sloa (33) and machine casing (9)
Standing along the outside, the above-mentioned parts (1) (8)
A hulling motor (34) for driving (21) is arranged.

As shown in FIGS. 3 to 4, the brown rice inlet (35) of the brown rice gutter (27) is provided with a brown rice sluice valve (36) for adjusting the amount of brown rice received into the brown gutter (27). The valve opening degree is appropriately adjusted by driving the gate valve motor (37) forward and backward. Further, the brown rice receiving plate (27a) facing the brown rice receiving opening (35) of the brown rice receiving gutter (27) detects the falling position state, that is, the distribution state of the brown rice flying by the rotation of the sorting cylinder (22). A plurality of piezoelectric grain pressure sensors (38) are provided to properly maintain the distribution state of brown rice flying to the receiving plate (27a) by controlling the rotation speed of the sorting cylinder (22) by the sorting motor (24). Is provided.

As shown in FIG. 1, the grain pressure sensor (38) ... Is connected to the input, and is composed of a microcomputer that detects the mainstream falling point of brown rice which is the central value of brown rice distribution based on the detection value of each sensor (38). And a control circuit (39) for controlling the selection motor (24) via a speed control circuit (40).
9) is connected to the output, and when the detected mainstream drop point based on each of the sensors (38) ... is different from the reference mainstream drop point stored and set in the control circuit (39), the sorting motor (24) is brought into a matched state. The rotation is accelerated and decelerated to adjust the rotation speed of the selection cylinder (22).

Further, the sensor connection circuit (41) for connecting the grain pressure sensor (38) ... And the control circuit (39) has a changeover switch (42).
And a changeover switch (42a) is connected to a vibration generating circuit (44) having a vibration power source (43) such as an AC or pulsating current wave. A timer (45) which operates by a signal from the control circuit (39) is connected to (42), and the timer (4) is connected.
5) periodically switch the selector switch (42) to the selector terminal (42
By switching to the (a) side for a certain period of time, the electric charges from the power source (43) are applied to the internal transducers (38) ... ) ... It is configured to shake off and remove the bran or dust that adheres or accumulates on the working surface.

This embodiment is configured as described above, and when the detection values from the respective sensors (38) are input to the control circuit (39) in the normal state, the receiving plate (27a) is based on these detection values.
The distribution state of brown rice falling on top is calculated from the number of grains per unit time, etc., and the mainstream drop point can be detected from the median, and this mainstream drop point is now set in the control circuit (39). When it coincides with the mainstream drop point, control is not performed and the sorting cylinder (22) maintains the current rotation speed, and when there is a disparity and there is a difference, the difference between the sorting motor (24) is accelerated and decelerated so that the reference mainstream fall point is set. The rotation speed of the sorting cylinder (22) is adjusted so that it is always maintained, and stable holding of both the sorting accuracy and the sorting amount of brown rice can be achieved.

On the other hand, while the changeover switch (42) is being switched to the changeover terminal (42a) for a certain period of time every time a certain period of time has elapsed due to the output from the timer (45), the electric charge from the power source (43) is transferred to each grain. When applied to the vibrator of the particle pressure sensor (38), the vibrator causes mechanical vibration, and the bran or dust that adheres or accumulates on the working surface of each sensor (38) ... It is something to clean. As a result, the sensor (38) ... Is capable of performing the above-described control while maintaining its function satisfactorily without being impaired by the accumulation of dust or dust, so that the control can be performed accurately and stably over a long period of time. Is possible.

Although the timer (45) is separately provided in the above-described embodiment, the timer built in the control circuit (39) may be used.

FIG. 5 shows another modified structure example, in which the grain pressure sensor (38) is vibrated for a certain period of time each time the removal rate control by the removal rate motor (7) is performed. In addition, the scraped rice pick-up gutter (16) is provided with a photoelectric type scraping rate sensor (46) for detecting the scrapping rate of the scraped rice, and a scrapping rate setter (47) for setting a standard scraping rate. And a debarking rate control circuit (48) for input-connecting the debarking rate sensor (46), and connecting a control circuit (48) to the debarking rate motor (7) via a drive circuit (49) for output connection. On the other hand, by connecting the control circuit (48) to the timer (45), a difference occurs between the detected debarking rate based on the detection of the debarking rate sensor (46) and the reference debarking rate, and a debarking rate motor ( When the roll gap control by 7) is performed, the timer (45) is operated to switch the changeover switch (42). Time Kokutsubu圧 sensor (38)
It is configured to vibrate.

In addition, the timer (45) may be connected to a power switch, a work switch, or the like, and the grain pressure sensor (38) may be vibrated at the same time each time the switch is operated in another work.

"Effect of Device" As is apparent from the above-described embodiment, the present invention is capable of separating the finely-selected grains that are separated and sorted by the rotary sorting drum (22) into the sorting drum (2).
2) In the structure designed to be received by the gutter (27),
A piezoelectric type grain pressure sensor (38) for detecting the falling position state of the carefully selected grains falling on the gutter (27) is provided, and an electric charge is appropriately applied to the grain pressure sensor (38). Since the vibration generating circuit (44) for generating vibration is provided in the sensors (38), the vibration is generated even when the grain pressure sensor (38) is in a state where, for example, bran or dust is accumulated. This removal can be done automatically by vibrating the grain pressure sensor (38) by the circuit (44). Therefore, the grain pressure sensor (38) can be continuously operated without interruption each time. A remarkable effect is achieved such that various controls can be performed while accurately maintaining the function of.

[Brief description of drawings]

FIG. 1 is a control circuit diagram of a rotary sorting cylinder, FIG. 2 is an overall sectional view, FIG. 3 is a side sectional view of the rotary sorting cylinder, FIG. 4 is a front sectional view of the same, and FIG. 5 is another modified structure. It is explanatory drawing which shows an example. (22) …… Rotating sorting cylinder (27) …… Gutter (38) …… Piezoelectric grain pressure sensor (44) …… Vibration generation circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 61-181581 (JP, A) JP 63-23778 (JP, A) JP 63-23779 (JP, A) JP 63- 39675 (JP, A) JP 63-200873 (JP, A) JP 63-264179 (JP, A) JP 63-39670 (JP, A) Actual development Sho 58-119890 (JP, U) Actual Development Sho 60-5485 (JP, U) Japanese Patent Publication 3-115 (JP, B2)

Claims (1)

[Scope of utility model registration request] 1. A piezoelectric type for detecting a falling position state of finely-selected grains falling on the trough in a structure in which finely-selected grains to be separated and sorted by a rotary sorting cylinder are received by a gutter in the sorting barrel. A rotary sorting device comprising a grain pressure sensor and a vibration generating circuit for applying an electric charge to the grain pressure sensor to generate vibration in the sensor.