JPH04349980A - Rotational speed control device of rotary cereal grain selector - Google Patents

Abstract

PURPOSE:To provide a rotational speed control device capable of high selection efficiency by installing a special grain scatter sensor 35 in a polished rice trough 16 which receives cereal grains raked up by a rotation selection cylinder 11 in a rotary cereal grain selector which separates unhulled rice from unpolished rice of a mixed rice using a rotation selection cylinder 11 with numerous pits in a rice hulling part 1 and on the inner peripheral surface. CONSTITUTION:A grain scatter sensor 35 capable of detecting a state where unpolished rice raked up into a polished rice trough 16 is scattered is provided. In this case, this sensor 35 is arranged in a state where it is positioned in a direction close to the inner peripheral surface of a rotation selection cylinder 11 beyond the tip position of a cereal grain receiving plate 16a located on the upstream side of operation of the rotation selection cylinder 11 for the polished rice trough 16. In addition, this grain scatter sensor 35 is relatively connected to the rotation adjustment device 34 of the rotation selection cylinder 11.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is equipped with a rotary grain sorting device for sorting mixed rice of paddy and brown rice using a rotary sorting cylinder having a large number of pot holes in the hulling part and the inner peripheral surface. The present invention relates to a rice huller sorting machine, and more specifically to a rotation speed control device for a rotary grain sorting device.

0002

[Prior Art] A rice hulling sorting machine is equipped with a rotary sorting tube that rotates around a horizontal axis and has many potholes in the hulling section and the inner circumferential surface. A finishing rice gutter is provided to receive the raked brown rice, and this finishing rice gutter is equipped with a grain scattering sensor that can detect the scattering state of the raked brown rice. There is a rice hulling sorting machine that is capable of automatic rotational speed adjustment operation in which the sorting operation can be carried out while properly maintaining the raking state of the grains in the rotating sorting tube by linking the sorting tube with a rotation adjusting means.

0003

[Problems to be Solved by the Invention] In the prior art, when installing a grain scattering sensor to detect the scattering state of brown rice being raked up in the finishing rice gutter, the sensor is placed on the upper side of the rotation of the rotating sorting tube of the finishing rice gutter. The structure is such that the grain receiving plate is placed slightly below the most extreme position near the tip of the grain receiving plate. With such a grain scattering sensor, the rotation speed of the rotary sorting cylinder can be controlled, i.e.
When the grain scattering sensor detects the scattering of grains, it is determined that the grains are flying too much, and the grain sorting operation is performed with the rotating speed of the rotary sorting cylinder lowered by, for example, one rotation. In this case, the grains are not scraped up to the upper end of the grain receiving plate of the finishing rice gutter, which means that the sorting operation is continued in a state where the sorting efficiency is not fully utilized, and the sorting efficiency is not improved. There was a problem.

[0004] Therefore, the present invention aims to eliminate such drawbacks and provide a grain scattering sensor that improves sorting efficiency.

[0005]

[Means for Solving the Problems] In order to solve the problems of the prior art, the present invention takes the following technical measures. That is, the present invention is equipped with a rotary sorting cylinder 11 which has a large number of potholes formed in the hulling part 1 and an inner circumferential surface and rotates around a horizontal axis. A finishing rice gutter 16 is provided to receive the raised brown rice, and a grain scattering sensor 35 that can detect the scattering state of the brown rice scraped up in the finishing rice gutter 16 is provided. The grain scattering sensor 35 and the rotary sorting cylinder are arranged in a direction closer to the inner circumferential surface of the rotary sorting cylinder 11 than the most advanced part of the grain receiving plate 16a located on the upper side. 11 rotation adjustment means 34
A rotation speed control device for a rotary grain sorting device is characterized in that the following are connected in a related manner.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention shown in the drawings will be described below. First, the configuration of the embodiment will be explained. Reference numeral 1 denotes a hulling section, and this hulling section 1 is composed of a rice hopper 2, a pair of hulling rolls 3, 3, and the like. Reference numeral 4 denotes a sloughed rice wind sorting path, in which sloughed rice from the hulling section 1 is sorted by the sorting wind generated by the suction fan 5 in front, and light rice husks are passed from the suction fan 5 to the dust exhaust pipe 6. Afterwards, it is discharged out of the machine, and the heavy rice mixed with brown rice and paddy falls into the dropping rice receiving trough 7 below and is sorted. The mixed rice that has fallen into the fallen rice catcher 7 is transferred to the mixed rice lifting machine 8.
The rice is fried into the mixed rice hopper 9 and supplied from the mixed rice hopper 9 to the starting end of the supply gutter 14 in the rotary sorting cylinder 11.

10 is a sorting case, and this sorting case 1
0 has a supply side end (left side in FIG. 1) and a discharge side end so that the rotary sorting cylinder 11, which has a large number of pot holes 11a, 11a, ... on its inner peripheral surface, can rotate around the horizontal axis. (Fig. 1
(on the right) is rotatably supported by drive rollers 12, 12. In this rotary sorting cylinder 11, the mixed rice that has fallen into the supply gutter 14 is passed horizontally through a feed gutter 14 with a feed helix 13 and a finishing rice gutter 16 with a finished rice helix 15.

When disposing the supply gutter 14 and the finished rice gutter 16 inside the rotary sorting tube 11, the supply gutter 14 is placed on the raking side of the rotary sorting tube 11, which rotates from the bottom to the top, as shown in FIG. In addition, the finishing rice gutter 16 is transferred to the rotating sorting cylinder 1.
The mixed rice, which is disposed on the side that rotates from the top to the bottom of the rotary sorting tube 11, is scraped up low by the pot holes 11a, 11a... of the rotary sorting tube 11, and falls into the supply gutter 14 and the rotary sorting tube 10, and the mixed rice falls into the supply gutter 14 and the rotary sorting tube 10. The mixed rice that fell into 14 is sent to supply gutter 1 by supply helix 13.
The rice is transferred to the terminal side of rice 4 and re-sorted, and the supply gutter 14 also functions as a mixed rice receiving gutter.

The discharge side end of the finishing rice gutter 16 is connected to a finishing rice receiving trough 19 via a finishing rice flow lower cylinder 17 and a finishing rice flow grain plate 18, and the brown rice is passed through the finishing rice flow lower cylinder 17 and the finishing rice flow grain plate 18. The brown rice that has passed through the grain plate 18 and fallen into the finished rice receiving trough 19 is wind-selected and flows down into the finished rice receiving trough 19.
It is configured to be taken out of the machine via the Rotary sorting tube 1
A paddy receiving gutter 21 is provided below the discharge side end of the paddy receiving gutter 21, and the grains mainly consisting of unhulled rice after sorting that have flowed down into the paddy receiving gutter 21 are sent to a paddy return hopper 23 by a paddy lifting machine 22. The rice is then returned to the hulling section 1, where it is hulled again.

Further, from the end of the sorting case 10 on the hulling section 1 side, as shown in FIG.
5a, the shaft end 13a of the supply helix 13, and the shaft ends 26a, 26a of the drive roll shafts 26, 26 supporting the drive rollers 12, 12, respectively, are extended toward the hulling section 1 side. , these shaft ends 13a, 15a, 26a, 26a are provided with pools, respectively.
Attach the pulleys 27, 27, ... and connect these pulleys 27, 2.
A transmission belt 28 is looped around 7, . In addition, a power take-off shaft 30 is projected rearward from the transmission case 29 of the hulling section 1, and the axis of the power take-off shaft 30 and the axis of the finishing rice helix 15 are aligned, and a cup is inserted between them. They are connected by a ring 31. Among these pulleys 27, 27,...
The pulley 27 attached to the shaft end 15a of the finishing helix 15 is a continuously variable speed pulley 27a that expands and contracts with a spring.
By moving the tension pulley 33 of the tension arm 32, the rotation radius is adjusted to increase or decrease, the rotation speed of the transmission belt 28 is changed and adjusted, and the rotation speed of the rotating sorting tube 11 is adjusted to increase or decrease. be done. Reference numeral 34 denotes rotational speed adjusting means, which includes a motor 34a, a gear 34b, an adjusting threaded rod 34c, and the like.

Numeral 35 is a supply-side grain scattering sensor that detects the scattering state of grains on the supply side of the finishing rice gutter 16, and 36 is a sensor that can detect the scattering state of grains in the middle part of the finishing rice gutter 16. These are intermediate grain scattering sensors, and the supply side grain scattering sensor 35 and the intermediate grain scattering sensor 36 are located on the side opposite to the scraping side of the finishing rice gutter 16, that is, on the rotation of the rotary sorting cylinder 11. It is located on the upper side and is provided on the upper part of the grain receiving side plate 16a on the side that receives grains. More specifically, the grain receiving plate 16a is attached in such a manner that it protrudes further upwards than the most distal end portion of the grain receiving plate 16a and is positioned in a direction approaching the inner circumferential surface of the rotary sorting cylinder 11. In addition, the supply side/intermediate grain scattering sensors 35 and 36 are configured to have an elongated shape, as shown in FIGS. With the supply side/intermediate grain scattering sensors 35 and 36 attached to the grain receiving plate 16a, the tip of the grain receiving plate 16a and the inner circumferential surface of the rotary sorting cylinder 11 The configuration is such that the spacing is small. In addition, 43 is a grain scattering sensor 35, 36
This is a guide located on the outer periphery of the The supply-side grain scattering sensor 35, intermediate grain scattering sensor 36, and rotation speed sensor 37 are connected to the arithmetic control unit 3 via an input interface.
In addition, the cylindrical rotation adjustment motor 34a that adjusts the rotation speed of the rotary sorting tube 11 via the output interface and drive circuit from the arithmetic control unit 38 and the abnormal state The configuration is such that a control command signal is output to a buzzer 39 that notifies the user.

Next, the control contents of the arithmetic control section 38 will be explained. (1) First, the initial rotation speed setting of the rotary sorting cylinder 11, that is, the adjustment of the rotation speed lower than the normal rotation speed will be explained. Based on the detection result of the rotation speed sensor 37, the rotation speed per minute is calculated based on the time required for the rotation sorting cylinder 11 to rotate at a predetermined speed (for example, 2 rotations), and is compared with the initial set rotation speed to set the measurement rotation speed. If it is higher or lower than the rotation speed, a command signal to decrease or increase the initial predetermined rotation speed is output at a predetermined time, and during that time, the rotation speed is measured and calculated every predetermined rotation of the rotating sorting cylinder 11, and the measured rotation speed is When the rotational speed reaches the initial set rotational speed, the output of the rotational speed change command signal is stopped, and the setting is adjusted to the initial rotational speed, that is, an initial rotational speed lower than the normal rotational speed. ■When the initial rotation speed setting of the rotary sorting tube 11 is completed, the control then shifts to scattering position adjustment depending on the scattering state of the grains to be sorted.
Detection information from the supply-side grain scattering sensor 35 and the intermediate grain scattering sensor 36 is taken into the arithmetic control unit 38 at predetermined time intervals, and when no grain scattering is detected, the arithmetic control unit 38
The cylindrical rotation adjustment motor 34a is adjusted to a predetermined rotation speed increasing side in response to a command signal from When the scattering of grains is detected by the grain scattering sensor 36, a command signal to lower the rotation by one rotation per minute is output. In this state, the grains are raked up to the upper end of the finishing rice trough 16, increasing efficiency, the raking state of the grains is optimized, and the optimization control of the rotation speed is completed. In this state, this supply side/intermediate grain scattering sensor 3
5, 36 are configured in an elongated shape, and the elongated longitudinal direction of the supply side/intermediate grain scattering sensors 35, 36 is aligned in the lateral direction of the tip of the grain receiving plate 16a. Combined with the attached configuration, brown rice can be received up to the tip of the grain receiving plate 16a near the inner peripheral surface of the rotary sorting cylinder 11, improving sorting efficiency.

The supply side grain scattering sensor 35 is shown in FIG.
As shown in (1), a semi-circular plate is attached to the upper end of the grain receiving plate 16a of the finishing rice gutter 16 so as to protrude, and is biased by a spring (not shown) to tend to move upward; When the supply-side grain scattering sensor 35 comes into contact with something, it may be configured to retreat downward, and as shown in FIG. 5(2), a grain detection surface may be provided at the upper end of the grain receiving plate 16a. Rotary sorting cylinder 11
It may be placed facing the inner circumferential surface of the
3), the supply side grain scattering sensor 35 is composed of a light emitting element 35a and a light receiving element 35b, and the grain receiving plate 16
It may be configured to detect grains that skip over a.

Next, FIGS. 6 and 7 will be explained. A sensor mounting pipe 40 is attached to the sorting case 10 on the inner circumferential side of the rotary sorting cylinder 11 and above the finishing rice gutter 16. is freely rotatable in the outer circumferential direction, and
The sensor mounting pipe 40 is fixedly attached to a predetermined position.
This is a configuration in which a lead wire 41 is placed inside. With this configuration, when moving the rotary sorting cylinder 11 in the longitudinal direction and removing it, the supply side/intermediate grain scattering sensors 35, 36
If it is located below the sensor mounting pipe 40, the rotating sorting tube 11 will be connected to the supply side/intermediate grain scattering sensors 35, 36.
It is safe because there will be no collision, and the lead wire 41 can be protected from mice, which is advantageous.

Next, FIGS. 8 and 9 will be explained. Finished rice control valve 16b and grain receiving plate 16a of finished rice gutter 16
Attach the pipe 42 to the upper end of the
If the upper ends of the finished rice control valve 16b and the grain receiving plate 16a, which are made of plates, are bent to increase their strength, even if the finished rice gutter 16 is long, it will not bend. There is no problem, finishing rice gutter 16 and finishing rice control valve 1
By making the upper end of 6b straight, it is possible to improve the sorting accuracy and sorting efficiency.

Next, the operation of the embodiment shown in FIGS. 1 and 2 will be explained. When carrying out hulling work, raw rice is supplied to the rice hopper 2, and each rotating part of the hulling and sorting machine is driven. Then, the paddy supplied from the paddy hopper 2 to the hulling rolls 3, 3 is hulled, and the grained rice is wind-selected in the grained rice wind selection path 4 below.
The rice husks are discharged from the dust exhaust pipe 6 to the outside of the machine. The mixed rice of brown rice and paddy is dropped and supplied to the sliding rice receiving trough 7, passed through the mixed rice hopper 9 by the mixed rice lifting machine 8, and lifted and supplied to the starting end side of the supply trough 14 on the rotary sorting cylinder 11 side. and is supplied to the supply side end of the rotary sorting tube 11 by the supply helix 13 in the supply gutter 14. Next, the mixed rice is scraped up by the pot holes 11a, 11a, . . . of the rotary sorting cylinder 11 which is rotating clockwise in FIG. The mixed rice consisting of long-grain paddy and some brown rice is scraped up low and falls into the supply gutter 14 or the rotary sorting cylinder 11 to be sorted. Then, the unsorted mixed rice that has fallen into the supply gutter 14 is fed again into the rotary sorting tube 11 from the conveyance terminal end of the supply gutter 14 by the supply helix 13, and is re-sorted.

The brown rice that has fallen into the finishing rice gutter 16 is conveyed by the finishing rice helix 15 to the finishing rice flow lower cylinder 17, passes through the finishing rice grain plate 18, and falls into the finishing rice receiving gutter 19, where it is sorted by the sorting wind. The rice is selected by wind and taken out of the machine by the finished rice lifting machine 20. In addition, grains mainly composed of unhulled rice after sorting sent to the discharge side end of the rotary sorting cylinder 11 flow into the lower paddy receiving trough 21, are fried by the paddy lifting machine 22, and sent to the paddy return hopper. The rice is reduced to 23, and the rice is hulled again in the hulling section 1.

During the hulling sorting work as described above, the detection information of the supply side grain scattering sensor 35 and the intermediate grain scattering sensor 36 is taken into the arithmetic and control unit 38 at predetermined time intervals, and the scattering of grains is detected. If not, the cylindrical rotation adjustment motor 34a is moved to the predetermined rotation speed increasing side by a command signal from the calculation control unit 38.
is adjusted, and when the scattering of grains is detected by the supply-side grain scattering sensor 35 and/or the intermediate grain scattering sensor 36, a command signal to lower the finishing rice gutter 16 by one revolution per minute is output, for example. Sorting work is carried out in a state where grains are raked up to the upper end of the grain receiving plate 16a, increasing work efficiency.

[0019]

[Effect of the invention] As explained above, this finishing rice gutter 16
When installing the grain scattering sensor 35 that can detect the scattering state of brown rice that has been scraped up by The grain scattering sensor 35 detects grains that have jumped from the upper end of the grain receiving plate 16a of the finishing rice gutter 16, since the grain scattering sensor 35 is arranged in a direction approaching the inner circumferential surface of the rotary sorting cylinder 11. After the grains are detected, the rotation speed of the rotary sorting cylinder 11 is controlled based on the detected grains, and the grain receiving plate 1 is
It is possible to receive grains up to the very edge of the upper end of 6a, improving sorting efficiency.

[Brief explanation of drawings]

[Figure 1] Whole cutaway side view

[Figure 2] Whole cutaway rear view

[Figure 3] Cutaway front view

[Figure 4] Block circuit diagram

[Figure 5] Front view and side view

[Figure 6] Cutaway side view

[Figure 7] Cutaway rear view

[Figure 8] Cutaway side view

[Figure 9] Cutaway rear view

[Explanation of symbols]

1 Hulling section 2 Paddy hopper 3 Hulling roll 4 Dropped rice wind sorting path 5 Suction fan 6 Dust exhaust tube 7 Dropped rice receiving trough 8 Mixed rice lifting machine 10 Sorting case 11 Rotary sorting tube 11a Pot hole 12 Drive roller 13 Supply helix 14 Supply gutter 15 Finished rice helix 16 Finished rice gutter 16a Grain receiving side plate 16b Finished rice adjustment valve 17 Finished rice flow lower cylinder 18 Finished rice flow grain board 19 Finished rice receiving trough 20 Finished rice lifting machine 21 Paddy receiver Gutter 22 Paddy hoisting machine 23 Paddy return hopper 26 Drive roll shaft 27 Pulley 28 Transmission belt 29 Transmission case 30 Power take-off shaft 31 Coupling 32 Tension arm 33 Tension pulley 34 Rotation speed adjustment means 34a Motor 34b Gear 34c Adjustment screw rod 35 Supply Side grain scattering sensor (grain scattering sensor) 36
Intermediate grain scattering sensor (grain scattering sensor) 37 Rotation speed sensor 38 Arithmetic control section 39 Buzzer 40 Sensor mounting pipe 41 Lead wire 42 Pipe 43 Guide

Claims (1)

[Claims] Claim 1: A rotary sorting cylinder 11 is provided, which has a large number of pot holes in the hulling part 1 and the inner circumferential surface thereof, and rotates around a horizontal axis. A finishing rice gutter 16 is provided to receive the brown rice, and this finishing rice gutter 16
When installing the grain scattering sensor 35 that can detect the scattering state of brown rice that has been scraped up by The grain scattering sensor 3 is also arranged in a direction approaching the inner circumferential surface of the rotary sorting cylinder 11.
5 and a rotation adjusting means 34 of the rotary sorting cylinder 11 are connected in a related manner.