JPH07110351B2 - Vertical grain sorter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION “Industrial field of application” The present invention relates to a deep-fried helix in which spiral blades are wound around the outer circumference of a cylindrical body in a grain body, and the deep-fried helix is concentrically inserted to provide a large number of small The present invention relates to a vertical grain sorter that stores a sorting net body provided with holes and supplies unsorted grains to the base of a fried helix to sort while fried.

"Prior Art" In a vertically long shell, a rotation-dried screening net and a fried helix that rotates in the screening net are erected and housed, and a grain is fried by the fried helix, In a vertical grain sorter that sorts small grains by passing through the small holes of the sorting net, in order to obtain refined grains of a desired particle size, first, a sorting net having a small hole diameter corresponding to the desired particle size is selected. It is necessary to select it. However, even if the diameter of the small holes of the screening net is predetermined, the amount of the small grains selected and separated from here is not necessarily constant.
What is needed is that there are multiple grades in the refined grain obtained depending on the mixing ratio of small grains and other factors, while the yield of the refined grain obtained from the unsorted original grain supplied is naturally reduced from the economical aspect. Because there is a limit.

Therefore, there will be no problem if the selection net corresponding to the desired grade or the desired grain yield can be freely selected and can be easily replaced. However, although it has become fairly easy to replace the sorting nets with the vertical grain sorters in recent years, it is not possible to arrange innumerable sorting nets with different diameters, and it is necessary to replace them frequently. Is unrealistic. For this reason, conventionally, a part of the selected small grains has been mixed into the refined grain again.

On the other hand, the mixing rate of small grains in refined grains (hereinafter referred to as “selection rate”), or the yield of refined grains from the source grain (hereinafter referred to as refined grain yield, or simply referred to as yield) It is known that even if the small holes of the screening net have a constant diameter, they can be selected quite freely depending on the relative rotation speeds of the fried helix and the screening net.

Based on this viewpoint, a vertical grain sorter equipped with a mechanical transmission in a drive unit such as a fried helix is disclosed, for example, in Japanese Utility Model Publication No. 58-128675.

[Problems to be Solved by the Invention] However, in a conventional vertical grain sorter equipped with such a mechanical transmission, speed conversion is not prompt, and the number of times until reaching a desired selection rate etc. is low. However, there were problems that it was necessary to repeat the trial run, which was troublesome, the machine weight increased, and it became difficult to move.

The present invention has been made by paying attention to such a conventional problem, and only by setting a desired ratio by means for setting a desired ratio between refined grains and small grains, the selected grains are selected. It is controlled with high accuracy so that the fine grain and the small grain have a set ratio, and without mixing a part of the small grain selected in the conventional manner into the fine grain again, a desired ratio of It is an object of the present invention to provide a vertical grain sorter capable of accurately obtaining sorted grains.

"Means for Solving the Problems" The present invention is configured as follows in order to achieve such an object. That is, the configuration is such that a vertically elongated shell body is erected to accommodate a selection net body that is rotationally driven by a drive motor, and a fried grain spiral body that is rotated in the opposite direction by the drive motor in the selection net body, In a vertical grain sorter that lifts grains by a fried helix, and the small grains are passed through the small holes of the sorting net to sort, and the driving speed of the sorting net and the fried helix is arbitrarily set. In order to make the speed changeable, an inverter control means for freely changing the input frequency of the drive motor is provided, and the refined grain and the small grain that have been selected and removed by the rotation-dried sorting net body and the fried helix are removed. Measuring means for respectively weighing, means for setting a desired ratio between refined grains and small grains, and the ratio by means for setting the desired ratio to the measurement data by the measuring means is compared with refined grains and small grains. The desired ratio of A vertical grain sorter, characterized in that a data processing means for controlling sea urchin the inverter control means.

[Operation] When the unsorted grains are supplied to the vertical grain sorter and started, the drive motor rotationally drives the fried helix and the sorting net in mutually opposite directions.

The unsorted grain fed into the grain receiving cylinder provided at the base of the fried helix is scraped up by the fried helix, and the fried grain is a screening net while being bounced off by the victim. The grain is subjected to a sorting action, the small grains pass through the small holes of the sorting net and are eliminated, and the good grains that do not pass through the small holes of the sorting net rise and are sent out to the outside.

The amount of small grains to be sorted out, that is, the yield of refined grains varies depending on the relative rotation speed of the fried helix and the sorting net under the condition that the diameter of the small holes of the sorting net is constant, The rotation speed of the drive motor is changed by the inverter control means while observing the discharge state of the small grains, and the control is performed so as to obtain a desired yield.

Then, a means for measuring the fine grain and a means for measuring the small grain are provided, and a control signal is issued from the data processing means to the inverter control means by these data, and the preset desired fine grain and small grain are set. The number of rotations of the fried helix is finely controlled so that the selected grain with the ratio of and is obtained. It is possible to automatically operate the ratio between the excluded small grain and the refined grain to a desired set value.

[Example] In Figs. 1 to 4, a vertical grain sorter 10 is a vertical grain outer shell 11 in which spiral blades 13 are wound around an outer circumference of a cylindrical body 12 to lift grain. A spiral body (14) and a sorting net body (16) concentric with the fried grain spiral body (14) and surrounding the outside thereof and having a large number of small holes (15) are housed.

The fried grain spiral body 14 and the sorting net body 16 are rotationally driven in opposite directions by a motor 18 with a speed reducer provided below a base plate 17 that divides the outer shell body 11 into upper and lower parts.

A supply hopper 19 for supplying unselected grains is provided outside the outer shell 11, and a storage tank 20 for temporarily storing refined grains is provided at the head.
Is provided. A shutter 21 is provided at the outlet of the storage tank 20.
And a closing device 22 for half-opening and closing the shutter 21 at a proper time.

Further, a small-hole grain discharge pipe 23 for discharging the small grains selected by the selection net 16 is provided on the side surface of the outer shell 11.

On the upper surface of the base plate 17, as shown in FIG. 3, a grain receiving cylinder 25 having a cylindrical shape and a bottom having a truncated cone shape is erected. At the bottom of the sorting net 16, a grain guiding cylinder 30 of approximately the same diameter is provided.
It is detachably attached to the lower end of 16. As shown in FIG. 4, the upper end 31 of the grain guiding cylinder 30 can be closely fitted into the end ring member 16a that constitutes the lower end of the selection net body 16, and the selection net body The end ring member 16a of 16 is provided with an engagement notch 16b for being driven by the grain guiding cylinder 30. A partition disk 32 is horizontally fixed to the outer periphery of one of the grain guiding cylinders 30, and the engaging cutout 16b is provided.
A plurality of locking members 33 that are locked to are provided.

The partition plate 32 has a circular outer periphery as shown in FIG.
Further, as described above, the locking member 33 is engaged with the engaging notch 16b of the sorting net body 16 to transmit the rotation of the grain guiding cylinder 30 to the sorting net body 16, and The small grains that have passed through the small holes 15 and dropped are discharged from the small grain discharge pipe 23 to the outside.

On the other hand, at the lower end of the grain guiding cylinder 30, a plurality of grain guiding ports 34 are formed as shown in FIG. The upper edge line 34a of each of the grain guide ports 34 is provided substantially below the lower edge of the opening 19a in the grain receiving tube 25 of the supply hopper 19.

Further, a plurality of grain guide blades 35 each having a starting end close to the upper edge line 34a of each grain guide port 34 and directed downward during rotation are provided.

On the other hand, the grain guiding cylinder 30 is rotatably mounted on the bottom portion 25a of the grain receiving cylinder 25 via a packing 36.

As shown in FIG. 2, the inverter control means 40 for freely controlling the rotation of the motor 18 with the speed reducer of the vertical grain sorter 10 configured as described above receives the alternating current received from the commercial power source S. It consists of an inverter 41 that once rectifies the electric power into a direct current and then outputs it as an alternating current power having a desired frequency, and a setter 42 that sets the desired frequency, and as shown in FIG. It is attached to the front surface and below the storage tank 20.

Next, the operation will be described.

Vertical grain sorter 10 that feeds unsorted grains to the feed hopper 19
When starting, the grain guide cylinder 30 slowly rotates together with the selection net body 16, and the grain guide blades 35 push the grain fed from the opening 19a in the grain receiver 20 of the supply hopper 19 downward. To send. Then, the grain is guided from the grain guiding port 34 to the grain guiding cylinder 30.
Is pushed into the inside of.

Inside the grain guiding cylinder 30, the fried helix 14 rotates in the opposite direction at high speed to scrape the grain, and the small holes in the sorting net 16
Sorted by 15. That is, the small grains that have passed through the small holes 15 fall in the space between the outer periphery of the sorting net body 16 and the inner wall of the outer grain body 11, and the partition disc 32 provided on the outer periphery of the grain guide cylinder 30. Try to deposit on the surface of. However, since the partition disk 32 is rotating together with the sorting net body 16, the small grains are splashed outward and discharged from the small grain discharge pipe 23 to the outside.

On the other hand, good grains that cannot pass through the small holes 15 of the sorting net body 16,
Even after repeating a part of falling, the grain is fried upward and is eventually accumulated in the storage tank 20.

The opening 19a of the supply hopper 19 does not open directly to the spiral blade 13 of the fried helix 14, and since the grain guide port 34 is provided considerably below the opening 19a, the fried helix 14 The taper part 21 of the grain receiving cylinder 25
In addition to the effect of the inclination of, the grain can be fed smoothly and the feed amount can be increased.

The refined grains from which small grains have been sorted are accumulated in the storage tank 20, but the shutter 21 is opened by operating the closing device 22 that is half-opened and closed at the appropriate time, and the refined grains are taken out and the degree of sorting is observed. The small grain discharged from the small grain discharge pipe 23 is observed, and the setter of the inverter control means 40 is set so as to match the desired grade.
42 is operated to change the rotation speeds of the fried helix 14 and the screening net 16. When the small holes 15 of the sorting net body 16 are constant,
Since the selection rate of the refined grain from the original grain largely depends on the rotation speeds of the fried helix 14 and the selection net 16, a desired grade can be obtained by controlling the rotation speed of the reduction gear motor 18 by the inverter control means 40. The fine grain of can be obtained freely.

Below the grain receiving cylinder 20 of the vertical grain sorter 10, as shown in FIG. 5, a weighing machine 50 as a grain weighing means is disposed.
Further, the vertical grain sorter 10 is provided with data processing means 51 for controlling the inverter 41.

As shown in FIG. 6, the data processing means 51 includes a data receiving section 52 for receiving weighing data of the weighing machine 50, a setting section 53 for inputting, for example, grain yield per unit time, and a time for receiving the data. The calculation / control unit 54 calculates the hit yield and compares it with the set value by the setting unit 53 to issue a control signal.

In the data processing means 51 having such a configuration, by inputting the desired yield per unit time, the weight data of the fine grain collected in the collecting bag B placed on the weighing machine 50 can be obtained. It is sent to the sequential calculation / control unit 54, the rate of increase per hour is calculated, compared with the set value, and when it is determined that the yield is less than the desired yield, a command is issued to the inverter 41 to increase the output frequency. On the contrary, when it is determined that the rate of increase in the collected grain is high, a command is issued to set the output frequency to a lower frequency.

In the embodiment according to the present invention, in addition to the fine grain weighing machine 50 for weighing the fine grain, a small grain weighing machine (not shown) for weighing the small grain and transmitting the weighing data is provided. As shown in FIG. 7, the data processing means 60 for controlling 41 includes a grain data receiving unit 61, a grain data receiving unit 62, a setting unit 63 for inputting a desired selection rate, and the grain The calculation / control unit 64 calculates the input data from the data receiving unit 61 and the input data from the small grain data receiving unit 62, compares the input data with the set value in the setting unit 63, and issues a control signal.

In this embodiment, since the direct data of the refined grain and the separated small grain are obtained and the accurate refinement rate is always output, the comparison with the desired refinement rate is accurately performed, and these calculations are performed. According to the result, the inverter control is more finely performed, and the desired grade of refined grain can be easily obtained.

FIG. 8 shows another embodiment of the present invention.

In this embodiment, as in the embodiment shown in FIG. 7, a weighing machine 50 for weighing the refined grain is provided, and the data processing means 70 as the control means of the inverter 41 is provided with the refined grain data receiving section 71.
And a data input unit 72 for the supplied original grain, a setting unit 73 for a desired selection rate, and a calculation / control unit 74 for calculating each of these data and setting values and issuing a control signal to the inverter 41. ing.

In this embodiment, the operation for the inverter 41 is the same as that in the second embodiment except that the data input unit 72 for the original grain is provided and the control signal is issued while performing the calculation by referring to this data.

"Effect of the invention" According to the present invention, the selection net and the fried helix that are rotationally driven by the drive motor are simply set by the means for setting the desired ratio between the refined grain and the small grain. The direct data obtained by weighing the refined grains and the small grains respectively selected by the method ensures reliable control of the desired ratio between the refined grains and the small grains with high accuracy, and the conventional selection The effect that the selected grain with a desired ratio can be easily and accurately obtained without remixing a part of the prepared small grain into the refined grain again.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a vertical grain sorter, FIG. 2 is a block diagram of an inverter control means, FIG. 3 is a vertical cross-sectional view of a main portion near a grain receiving cylinder, and FIG. 4 is a base of a sorting net. Fig. 5 is a perspective view of a grain guide cylinder, Fig. 5 is a vertical sectional view of a vertical grain sorter provided with weighing means, Fig. 6 is a block diagram showing details of inverter control means, and Fig. 7 is the present invention. FIG. 8 is a block diagram showing details of the inverter control means according to one embodiment, and FIG. 8 is a block diagram showing details of the inverter control means showing another embodiment of the present invention. S: Commercial power supply, 10 ... Vertical grain sorter 11 ... Outer shell, 12 ... Cylindrical body 13 ... Spiral blade, 14 ... Lifting helix 16 ... Sorting net, 16a ... End ring Member 16b …… Engagement notch 18 …… Reducer motor (drive motor) 19 …… Supply hopper, 20 …… Storage tank 23 …… Small grain discharge pipe, 25 …… Grain barrel 30 …… Grain induction Cylindrical body 40 …… Inverter control means 41 …… Inverter, 42 …… Setting device 50 …… Measuring device (measuring device) 51 …… Data processing device (second embodiment) 52 …… Data receiving unit, 53 …… Setting Unit 54 ...... Calculation / Control Unit 60 ...... Data processing means (third embodiment) 61 ...... Fine grain data receiving unit 62 …… Small grain data receiving unit 63 …… Setting unit 70 …… Data processing means (first 4 Example) 71 ... Refined grain data receiving section 72 ... Original grain data input section 73 ... Setting section, 74 ... Calculation / control section

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hisao Wakui 4290 Fujioka, Fujioka-machi, Shimotsuga-gun, Tochigi Prefecture Tiger Kawashima Co., Ltd. References JP-A 64-11678 (JP, A) JP-A 57-177381 (JP, A) JP-A 61-242677 (JP, A)

Claims (1)

[Claims] 1. A vertically elongated shell body in which a sorting net body which is rotationally driven by a drive motor and a fried grain spiral body which is rotated in the opposite direction by the drive motor in the sorting net body are vertically installed and accommodated. In a vertical grain sorter in which grains are fried by a grain spiral and small grains are passed through small holes in a sorting net to sort, and the driving speed of the sorting net and the lifting helix is arbitrarily changed. In order to make it possible, an inverter control means for freely shifting the input frequency of the drive motor is provided, and fine grains and small grains are selected and removed by the rotation-dried screening net and the fried helix, respectively. Measuring means for measuring, means for setting a desired ratio of refined grains and small grains, and the ratio of means for setting the desired ratio of the measurement data by the measuring means to the ratio of refined grains and small grains The above to maintain the desired ratio Vertical grain sorter, characterized in that a data processing means for controlling the inverter control means.