JPH08225B2 - Vertical grain sorter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION “Industrial field of application” The present invention relates to a fried helix in which spiral blades are wound around the outer circumference of a cylinder in a shell, and the fried helix is concentrically inserted to provide a large number of small The present invention relates to a vertical grain sorter that accommodates a sorting net body provided with holes and is provided with a weight weighing unit that weighs fried grains.

[Prior Art] In a shell, a rotationally driven selection net and a fried helix that rotates in the selection net are erected and housed, and while the grains are being fried, small grains are selected. It passes through small holes in the body to sort,
The refined grain thus obtained is automatically weighed by a separately provided electronic weight weighing means and packaged.

However, in order to obtain refined grains with a desired particle size, it is necessary to first select a screening net having a small hole diameter corresponding to the desired particle size, and it is possible to replace the screening net with a vertical grain sorter in recent years. Although it has become easier, it is impossible to arrange an innumerable number of sorting nets having different small hole diameters, and it is unrealistic to replace them frequently. For this reason, in order to obtain a desired grade of refined grain, 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.

In addition to the selection rate, the amount of fried grain per unit time (hereinafter referred to as fried grain capacity) also corresponds to the number of revolutions of the fried helix, and has a significant correlation with the shape of the blade of the fried helix. It has been already disclosed by the inventors in Japanese Patent Publication No. 63-65387.

[Problems to be Solved by the Invention] However, in the conventional vertical grain sorter equipped with the mechanical transmission as described above, speed conversion is not prompt, and it takes some time to reach a desired selection rate or the like. There were problems that it was necessary to repeat trial runs many times, which took time and labor, and increased the mechanical weight, making it difficult to move.

The present invention has been made by paying attention to such conventional problems, by setting the amount of fried per unit time corresponding to the desired selection rate of the refined grain by the fried amount setting means, By controlling the number of rotations, only by setting the amount of frying per unit time corresponding to the desired selection rate of the refined grains by means of the amount setting means of frying, it is possible to obtain the refined grains of the desired selection rate, From near the end of the selection zone of the fried helix to increase the pitch of the spiral blades in the discharge area to facilitate the movement of fried grain in the selection area, and to make the relationship between the number of revolutions of the fried helix and the selection rate approximately wide It is an object of the present invention to provide a vertical grain sorter that can be evenly and clearly defined and that can easily and accurately set a desired selection rate.

"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 the vertically elongated shell body is erected to accommodate the sorting net body that is rotationally activated by the drive motor and the fried helix that is rotated in the opposite direction by the drive motor in the sorting net body, In a vertical grain sorter comprising weight weighing means for weighing fried grains, a frequency control means provided with an inverter device for varying the input frequency to the drive motor and controlling its rotation freely. And a control device for controlling the frequency control means, wherein the control device is provided with a fried grain amount setting means for setting a fried grain amount per unit time corresponding to a desired refined selection rate of the grain, The weighing data by the weighing means is compared with the set value set in the frying amount setting means, and the frequency control means is configured to be controlled so that a desired refined grain selection rate is maintained. Grain spiral From the beginning of the lower part, the scraping area for picking up the grain, then the supply area, the sorting area, and the discharge area, and the pitch of the spiral blade from the end of the selection area to the discharge area is larger than the pitch of the spiral blade in other areas. It is a vertical grain sorter characterized by being trained.

"Operation" When the unsorted grain is supplied to the vertical grain sorter and started,
The fried helix and the screening net are rotationally driven in opposite directions by the drive motor.

The unsorted grains fed into the grain receiving cylinder provided at the base of the fried helix are scraped up by the fried helix, and the fried kernels are splattered outward while the sorting net. The grain is subjected to the 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 are raised and weighed by the weight weighing means.

Since the amount of fried grain per unit time of refined grain, that is, the fried ability depends on the number of rotations of the fried helix, it is easily desired by setting the fried ability in advance by the fried ability setting means. A fine grain yield of

The amount of small grains to be sorted out, that is, the selection rate, fluctuates 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 relationship between the above is sought and stored by experiment, and by making it freely selectable, the vertical grain sorter automatically executes the predetermined operating conditions to obtain the desired carefully selected refined grain. You can get in Noh.

The fried helix consists of a fried grain area where the grains are scraped from the lower end, and then a feed area, a sorting area, and a discharge area. It is bigger than the pitch of
The frying ability from near the end of the sorting area to the discharging area is higher than in other areas, and the accumulation density of grains in the sorting area is maintained at an appropriate density without becoming overcrowded. As a result, the relationship between the rotation rate of the fried helix and the selection rate is substantially linear, and the control accuracy of the selection rate by the rotation rate of the fried helix is improved, and the selection rate by the rotation rate of the fried helix is improved. The control accuracy can be set easily and accurately.

Furthermore, the specially shaped convex portion provided on the outer inclined portion of the spiral blade ensures that a highly efficient selection action can be performed by appropriately stirring the grains without increasing the rotation speed more than necessary. It is possible.

Then, during the selective operation, when the upward lifting of the grain is completed and the output of new data is not obtained by the weighing means for a certain period of time, that is, it is determined that the grain is not loaded into the grain. By reading from the data output of the means and making it faster than the rotation speed of the fried helix during the selection operation, the grain remaining in the shell further increases the fried speed and discharges the residue in the shell. It is possible.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

The vertical grain sorter 10 is a vertically laid outer shell body 11, and a fried grain spiral body 40 formed by winding spiral blades 42 around the outer periphery of a cylindrical body 41, and concentric with the fried grain spiral body 40. Surround the outside,
A sorting net body 16 having a large number of small holes 15 is stored.

The fried helix 40 and the screening net 16 are rotationally driven in opposite directions by a motor 18 with a speed reducer provided below a base plate 17 that partitions the outer shell 11 into upper and lower parts.

Outside the outer shell 11, a supply hopper 19 for supplying unsorted grains
A storage tank that is equipped with a head and can temporarily store refined grains
20 are provided. A shutter is provided at the outlet of the storage tank 20.
A shutter 21 is provided, and a closing device 22 for half-opening and closing the shutter 21 at a proper time is provided.

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.

The upper surface of the base plate 17 has a cylindrical shape as shown in FIG.
At the bottom, a truncated cone 25 having a truncated cone shape is erected. At the lower part of the sorting net body 16, a grain guiding cylinder 30 having substantially the same diameter is provided so as to be detachable from the lower end portion of the sorting net body 16. As shown in FIG. 4, the upper end 31 of the grain guiding cylinder 30 has a sorting net body 16
The end ring member 16a of the sorting net body 16 can be closely fitted into the end ring member 16a that constitutes the lower end portion of the selection mesh body 16, and the end ring member 16a of the sorting mesh body 16 can be driven by the grain guide cylinder 30. The cutout 16b is engraved. A partition disk 32 is horizontally fixed to the outer circumference of one of the grain guiding cylinders 30, and the engaging cutout 16 is provided.
A plurality of locking members 33 for locking to b are provided.

As shown in FIG. 4, the partition disk 32 has a circular outer periphery, and the locking member 33 has the above-described sorting net body 16 as described above.
The rotation of the grain guiding cylinder 30 is transmitted to the sorting net body 16 by being engaged with the engaging notch 16b of the, and the small grain that has passed through the small holes 15 of the sorting net body 16 and dropped It is discharged from the 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.

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.

The fried helix 40 has a plurality of spiral blades 42 on the outer circumference of a cylindrical body 41.
Is wound, and in this embodiment, there are three spiral blades.
42a, 42b and 42c are wound with a phase difference of 120 degrees as shown in FIG.

Then, the part in contact with the bottom surface of the grain guiding cylinder 30 at the lower end portion is a scratching area, the portion substantially corresponding to the height of the grain guiding cylinder 30 is a feeding area, and a small hole 15 is provided to perform a main sorting operation. The part is the selection area, and the vicinity of the upper end is the emission area.

The spiral blade 42 is projected at a right angle from the cylindrical surface of the cylindrical body 41 in the scraping area and the supply area, but in the selection area and the discharge area, the portion close to the cylindrical body 41 is downward as shown in FIG. The inner slope 43 is gently sloped, then the step 44, and then the outer slope 45. A plurality of special chevron projections 46, as shown in FIGS. 5 to 7, are equally arranged on the outer inclined portion.

Further, as shown in FIG. 8, the spiral blade 42 is gently wound at a small pitch in the scraping area and the supply area, and is steeply wound at a large pitch in the vicinity of the end of the selection area and in the discharge area.

The electronic weighing device 50 as a weight weighing means is a separate unit from the frame body 11, and the upper surface thereof is flat so that the bag body B can be placed thereon.

Next, as frequency control means for freely controlling the rotation of the motor with reduction gear 18, as shown in FIG. 2, the AC power received from the commercial power source S is once rectified into a direct current, and then an alternating current of a desired frequency is obtained. An inverter device 60 that outputs electric power is provided. A control device 70 is provided for controlling the inverter device 60 by receiving the weighing data from the electronic weighing device 50.

As shown in FIG. 2, the control device 70 includes a data receiving unit 71 that receives the measurement data of the electronic measuring device 50, a grain selection amount per unit time, and a selection rate determined by the diameter of the small holes 15 of the selection net 16. A storage unit 73 for storing relational data with the selection data, a selection setting unit (lifting amount setting means) 72 for setting the amount of fried food per unit time corresponding to a desired selection rate of refined grains, and receiving the measurement data. And the data stored in the storage unit 73, and outputs a control signal to the inverter device 60, and an arithmetic control unit 74.

Further, without depending on the control device 70, the state of fine grain and the amount of deep-fried food are visually determined, and a manual setting device 61 for manually setting the output frequency of the inverter device 60, the manual setting device 61 and the control. A switching device 62 for switching between the device 70 is provided.

 Next, the operation will be described.

A vertical grain sorter that supplies unsorted grains to the supply hopper 19
When starting 10, the grain guiding cylinder 30 slowly rotates together with the sorting net 16 and the grain guiding blades 35 move the grains fed from the opening 19a in the receiving cylinder 20 of the supply hopper 19 downward. Push. Then, the grain is guided from the grain guiding port 34 to the grain guiding cylinder.
Pushed inside 30.

Inside the grain guide cylinder 30, the fried helix 40 rotates in the opposite direction at a high speed to scrape the grain, and the grain is sorted by the small holes 15 of the sorting net 16. That is, the small grains that have passed through the small holes 15 fall in the space between the outer periphery of the selection net body 16 and the inner wall of the outer shell body 11, and the partition disk 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.

The refined grains from which small grains have been sorted are accumulated in the storage tank 20, but the shutter 22 is opened by operating the closing device 22 at a suitable time, the refined grains are taken out, the degree of sorting is observed, and the small grains are discharged. Tube 23
The small grains discharged from the machine are observed, and the manual setting device 61 of the inverter device 60 is operated to change the number of revolutions of the fried helix 40 and the screening net 16 so as to match the desired grade. Under the condition that the small holes 15 of the selection net 16 are constant, the selection rate of the refined grain from the original grain greatly depends on the rotation speeds of the fried helix 40 and the selection net 16, so that the inverter device 60 is used. By controlling the rotation speed of the motor 18 with a reduction gear, it is possible to freely obtain a desired grade of grain.

Next, when the manual / automatic switching device 62 is switched to the automatic side, the desired frying capacity and the selective rate are selected within a range corresponding to the stored contents, and the shutter 21 is opened, the electronic weighing device 50
Is sent to the control device 70, a control signal corresponding to the set value is issued, and the inverter device 60 drives the motor with speed reducer 18 by the output of the corresponding frequency.

In the above operation, since the spiral blade 42 of the fried food spiral body 40 is constituted by the three spiral blades 42a, 42b, 42c, the grain is picked up particularly efficiently in the scratching area.

Then, in the sorting area, the grains are appropriately stirred by the special chevron projections 46 as shown in FIG.
Opportunities for sorting by 16 are evenly spread over the grain, and efficient sorting is performed.

Further, in the fried helix 40, as shown in FIG. 8, the pitch of the spiral blades 42 is larger than the pitch of the spiral blades in other areas in the discharge area from the vicinity of the end of the selection area. The frying capacity from the vicinity to the discharge area is higher than that in other areas, and the grain accumulation density in the sorting area is maintained at an appropriate density without becoming overcrowded. As a result, the relationship between the rotation rate of the fried helix 40 and the selection rate becomes substantially linear, and the accuracy of controlling the selection rate by the rotation rate of the fried helix 40 is improved, and the selection rate by the rotation rate of the fried helix 40 is selected. The rate can be set easily and accurately.

[Advantage of the Invention] According to the present invention, the amount of fried grain per unit time corresponding to the desired selection rate of the refined grain is set by the fried amount setting means, and the number of revolutions of the fried helix is controlled, Only by setting the amount of fried grain per unit time corresponding to the desired selection rate of the refined grain by the grain amount setting means, it is possible to obtain the refined grain of the desired selection rate and the end of the selection region of the fried helix. By increasing the pitch of the spiral blade in the discharge area from the vicinity,
The lifting capacity from near the end of the sorting area to the discharging area is set higher than that in other areas, and the relation between the grain sedimentation density in the sorting area and the selection rate with respect to the rotation speed of the lifting helix is kept moderate. It is possible to make it almost linear, and it is possible to improve the control accuracy of the selection rate by the rotation speed of the fried helix, and at the same time, the effect that the selection rate by the rotation speed of the fried helix can be set easily and accurately is obtained. .

[Brief description of drawings]

1 to 8 show an embodiment of the present invention.
The figure is a vertical cross-sectional view of a vertical grain sorter, FIG. 2 is a block diagram of a frequency control means and a control device, FIG. 3 is a vertical cross-sectional view of a main portion in the vicinity of a grain receiving cylinder, and FIG. FIG. 5 is a perspective view of the base and the grain guiding cylinder, FIG. 5 is a plan view of the spiral blade in the sorting area and the discharging area, FIG. 6 is a side view of the same, and FIG. 7 is a sectional view taken along line VII-VII in FIG. , FIG. 8 is a diagram showing an expanded array of spiral blades. S: Commercial power source 10: Vertical grain sorter, 11: Outer shell body 16: Sorting mesh body, 16a: End ring member 16b: Engagement notch 18: Motor with reduction gear (drive motor) 19 …… Supply hopper, 20 …… Storage tank 23 …… Small grain discharge pipe, 25 …… Grain receiving cylinder 30 …… Grain induction cylinder, 40 …… Lifting spiral 41 …… Cylindrical body 42 (42a, 42a, 42b, 42c) ...... Spiral blade 43 ...... Inner sloping section, 44 ...... Step section 45 ...... Outer sloping section, 46 ...... chevron protrusion 50 ...... Electronic measuring device (weight measuring means) 60 ...... Inverter device (frequency) Control means) 62 …… Manual / automatic switching device 70 …… Control device 72 …… Selection setting unit (lift amount setting means) 73 …… Storage unit 74 …… Calculation control unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hisao Wakui 4290 Fujioka, Fujioka-machi, Shimotsuga-gun, Tochigi Prefecture Tiger Kawashima Co., Ltd. In-house referee body Chief Judgment Chief Shigeyoshi Yasuo Minowa Judge Ken Hara (56) References JP-A-62-221478 (JP, A) JP-A-64-11678 (JP, A) JP-A-61-149280 (JP, A) Practical application Sho-63-173380 (JP, U)

Claims (1)

[Claims] 1. A vertically elongated shell body in which a sorting net body which is rotationally activated by a drive motor and a fried grain spiral body which rotates in the opposite direction by the drive motor in the sorting net body are vertically installed and accommodated. In a vertical grain sorter comprising a weight weighing means for weighing the grain that has been crushed, a frequency control means having an inverter device for varying the input frequency to the drive motor and controlling its rotation freely. And a control device for controlling the frequency control means, wherein the control device comprises a fried grain amount setting means for setting a fried grain amount per unit time corresponding to a desired selection rate of the grain refinement, and the weight measurement The weighing data by means is compared with a set value set in the fried grain amount setting means, and the frequency control means is configured to be controlled so as to maintain a desired selection rate of the refined grain. The spiral is at the bottom From the edge, the scraping area for picking up the grain was set, and then the supply area, the sorting area, and the discharge area, and the pitch of the spiral blade was made larger than the pitch of the spiral blade in other areas in the discharge area from the vicinity of the end of the selection area. A vertical grain sorter characterized by that.