JPH0741210B2 - Disc rotating type grain sorting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention selects brown rice from mixed rice after hulling by rotating a donut-shaped disc having a large number of recesses on one or both sides. The present invention relates to a grain selection device.

[Conventional technology]

At least the lower half in a sorting cell formed in a cylindrical shape, the rotation axis is axially supported in parallel with the axis of the sorting cell, the rotation axis, donut-shaped disk formed a number of recesses on one or both sides While providing a plurality of sheets at appropriate intervals in the axial direction, the sorting cell is provided with a supply portion of mixed rice of paddy and brown rice at one end in the axial direction thereof, and a paddy discharge portion at the other end, respectively, and
A disc rotary type grain sorting device comprising brown rice gutters provided between the discs is disclosed in Japanese Patent Laid-Open No.
-136688.

In this disc rotating type grain sorting device, the mixed rice fed from the feeding section at one end of the disc is lifted to a certain height by the rotation of the disc in the portion between the discs and then dropped. The fluidized bed of the mixed rice is transferred to the discharge part while repeating the flowing flow. While the fluidized bed is being transferred, the brown rice in the mixed rice fits into the recess of the disc and falls from a high position, so that the brown rice that falls from a high position can be received and taken out by the brown rice gutter. It is the one.

As described above, on the supply section side of this type of rotary grain sorting apparatus, generally, a large amount of brown rice is mixed in the fluidized bed of mixed rice (the brown rice mixing ratio is high), and the brown rice in this fluidized bed is While each disc is fried and taken out of the machine through the brown rice gutter, the paddy is left in the fluidized bed, so the brown rice mixing ratio gradually decreases as it goes to the discharge side, and almost all of it is discharged. Only paddy.

Therefore, the larger the number of recesses into which brown rice fits, the higher the selection capability of brown rice (the ability to remove brown rice from the machine per unit time). In other words, it is considered that the selection ability is improved by increasing the number of disks.

[Problems to be solved by the invention]

However, as the fluidized bed of the mixed rice in the sorting cell is sequentially transferred from the supply unit to the discharge unit, the flow of the mixed rice flows to each of the recesses formed on one or both sides in the radial direction of each disc. The opportunity that brown rice in the layer can fit is
Since each disc is only brown rice in the vicinity of the surface of the disc when passing through the fluidized bed, it is formed on one side or both sides in the radial direction of each disc at the location on the side of the supply part where the brown rice mixing ratio is high. The chances of the brown rice in the fluidized bed of the mixed rice to fit into each of the recesses are increased, and therefore the amount of brown rice scooped by each disc is large. On the contrary, as it goes to the discharge side, the chance that the brown rice in the fluidized bed of the mixed rice may be fitted into each of the recesses of the disc becomes smaller, and the amount of brown rice scooped by the disc at the place becomes smaller.

Therefore, there is a problem that the efficiency of the entire sorting apparatus cannot be improved by simply increasing the number of disks arranged at appropriate intervals along the axial direction of the sorting cell.

The present invention, by increasing the spacing of the plurality of discs arranged along the axial direction of the sorting cell, increasing the chance that brown rice in the fluidized bed can fit in the recesses in each disc,
This is to improve the selection ability of brown rice.

[Means for solving problems]

In order to achieve this object, the present invention, one end in the axial direction of the sorting cell, a supply portion of mixed rice of paddy and brown rice, the other end is provided with a paddy discharge portion, respectively, in the sorting cell A plurality of donut-shaped discs each having a plurality of recesses formed therein are disposed so as to be supported by a rotation shaft extending in the axial direction so as to rotate, and the sorting cell is provided between the discs. In a disc rotary type grain sorting device provided with brown rice gutters, the arrangement intervals of the discs in the axial direction of the sorting cell are configured to be wide on the supply side and narrow on the discharge side. Is.

[Operation and effect of invention]

With this structure, the discs are adjacent to each other along the axis of the sorting cell at a short distance on the discharge side, so that the fluidized bed is formed thick, and the brown rice mixing ratio in the fluidized bed on the discharge side is increased. If the number of brown rice is small, the chances that the brown rice will fit in the recesses on the surface of the disc will increase, and the amount of brown rice that will be fried by the rotation of the disc will increase. Compared with, the sorting ability can be improved with the same number of discs.

Therefore, according to the present invention, the disc separation ability of the disc rotary type grain sorting device is greatly increased while the disc spacing is widened on the supply side and narrowed on the discharge side. Has the effect of improving.

〔Example〕

The following is a description of the drawings of an embodiment in which the present invention is applied to a grain sorting mechanism in a grain sorting machine. FIG. 1 shows the entire grain sorting machine, and this grain sorting machine 1 is vertically long. The whole of the rectangular box body 2 is formed by providing the hulling section 3, the wind selecting section 4 and the disk rotary type sorting mechanism 5.

The paddy hull 3 comprises a paddy supply hopper 6 and a pair of left and right derollers 7 and the like, and is located in the middle of the rectangular box 2.

The wind selecting unit 4 is located below the hulling unit 3 and sorts the slid-down rice after removal into rice hulls and mixed rice, and sends the mixed rice to the disk rotary sorting mechanism 5. The mixed grain rice gutter 9 with the spiral conveyor 10, the mixed rice gutter 9 with the spiral conveyor 10 and the suction dust collecting fan 11 and the like. A mixed rice thrower 12 for sending is connected, and the mixed rice thrower 12 and the suction dust collecting fan 11 are rotationally driven by a motor 13.

The disc rotary sorting mechanism 5 includes a sorting cell 14 having at least a lower half formed in a cylindrical shape. The sorting cell 14 has a side plate 14a at one end in the axial direction and a supply portion 15 at the other end. Each side plate 14b is provided with a discharge portion 16, and the tip of the mixed rice thrower 12 is opened in the hopper 17 connected to the supply portion 15, while the discharge portion 16 is discharged from the discharge portion 16. A reflux shroud for refluxing the paddy to be fed into the paddy supply hopper 6 in the paddy sliding section 3.
18 connected. Further, a remaining rice discharge valve 19 is provided on the bottom surface of the sorting cell 14 so as to be openable and closable.

In the sorting cell 13, a rotary shaft 20 which is rotationally driven at an appropriate speed by the motor 13 is supported in parallel with the axis of the sorting cell 14, and the rotary shaft 20 is fitted with brown rice on one side or both sides. A plurality of donut-shaped discs 21 in which a large number of recesses 22 each having a size that does not fit the paddy are set are provided at appropriate intervals in the axial direction (however, the drawings show the discs 21. Shows the case where the recesses 22 are engraved on both sides of the).

In this case, according to the present invention, the first disc 21 at the position near the supply unit 15 and the disc at the next position in the sorting cell 14 are arranged.
It is said that the distance (h2) between the disk 21 and the next disk 21 is shortened by an appropriate dimension with respect to the distance (h1) in the axial direction with respect to the disk 21.
It is arranged such that the axial distance between 21, 21 is gradually reduced (see FIG. 2).

In addition, each of the plurality of recesses 22 in each of the discs 21,
As shown in FIGS. 3 to 5, the disk 21 has an oval shape in which the length dimension L in the circumferential direction of the disk 21 is larger than the width dimension S in the radial direction. Is set to a size smaller than the length size of the unpolished rice and larger than the width size of the unpolished rice, on the other hand, of the left and right inner side surfaces 22a, 22b in the longitudinal direction of each recess 21, it is located on the front side with respect to the disc rotation direction The inner side surface 22a is appropriately angled (for example, about 15
The inner surface 22a and the bottom surface 22c
The length dimension L1 from the intersection with the other inner surface 22b is substantially equal to the length dimension of the brown rice, and the L is an intermediate length dimension between the length dimension of the brown rice and the length dimension of the paddy. The depth T of the recess 22 is set to be substantially equal to the diameter of the brown rice.

The upper part between each disc 21, and the disc 21 and the sorting cell
Brown rice gutters 23 are slantedly inserted in the upper part between the both side plates 14a, 14b of 14 and the lower ends of the brown rice gutters 23 are attached to the brown rice discharge chute 27 through the upper surface of the brown rice falling plate 24. It communicates with the attached brown rice style selection section 26.

On the other hand, the suction side of the suction / dust fan 11 in the wind selecting unit 4 communicates with the brown rice wind selecting unit 26 and the sorting cell 14 through an air passage 28 formed in the rectangular box body 1, and the suction is performed. The suction air to the dust exhaust fan 11 is also sucked from the sorting cell 14 so as to ventilate the inside of the sorting cell 14 and finish the brown rice.

Thus, when the paddy is fed into the paddy supply hopper 6 in the paddy section 3 during the paddy sorting operation, the sludge removed from the paddy section 3 has its hulls sucked in the wind selecting section 4 to remove dust 11
The mixed rice from which rice husks have been removed by the wind selection is drawn into the mixed rice receiving trough 9 and is supplied from the mixed rice thrower 12 into the selection cell 14 from the supply section 15 thereof. . The mixed rice thus fed into the sorting cell 14 is lifted up to a certain height as shown by the double-dashed line arrow A in FIG. While flowing, it is transferred toward the discharge unit 16.

During this flow, the brown rice in the mixed rice fits into the recesses 22 in each disk 21, is lifted to a high position, and then falls from the recesses 22 to be sorted into the brown rice trough 23.

The brown rice that has entered the brown rice gutter 23 in this way is the brown rice style selection unit.
After selecting the finishing style in 26, brown rice extraction short 27
While being taken out of the machine from the
The mixed rice that moves while flowing toward each disk 21
The brown rice is removed so as to enter the brown rice gutter 23 by the rotation of, and the rate of the paddy increases as it approaches the discharge part 16, and flows out from the discharge part 16 into the paddy supply hopper 6 in the paddy hull part 3, The de-action is performed again.

Therefore, in the sorting cell 14, a plurality of discs 21
, When disposed along the axial direction of the rotary shaft 20, since the supply portion 15 side is wide and the discharge portion 16 side is gradually narrowed toward the discharge portion 16 side, the flow on the discharge portion 16 side. Even if the brown rice mixing ratio in the layer is low, the chances that brown rice will fit into the recess 22 of the disc 21 on the discharge side will increase, and the amount of brown rice fried with the rotation of the disc will increase, Compared to the case where a plurality of discs are arranged at equal intervals, the sorting ability can be improved with the same number of discs.

It should be noted that, in the above-mentioned embodiment, the sorting cell 14 is provided with the discharging section 16 thereof.
The lower end of the side is supported by the support shaft 29 so as to be vertically rotatable, while the lower end of the sorting cell 14 on the side of the supply unit 15 is supported by the upper end roller 32 of the link lever 30 which supports the intermediate part of the shaft 31 and rotates vertically. The lower end of the link lever 30 is supported by abutting contact with the screw shaft 34 at the tip of the rotating handle 33 that can be operated from outside the machine, and the screw shaft
If the sorting cell 14 is configured to be inclined downward along the axial direction of the sorting cell 14 through an appropriate driving means 35 such as moving the 34 protruding, the sorting cell 14 in the sorting cell 14 at the end of the sorting operation is The remaining rice can be quickly discharged out of the machine.

FIG. 6 shows another embodiment of the present invention in which the disc 36 in the sorting cell 14 is formed into a conical plate shape,
A large number of recesses into which brown rice fits are formed on the conical inner diameter side surface of each disc 36, and the arrangement intervals of the discs 36 along the axial direction of the rotary shaft 20 are set so that the mixed rice feed portion to the sorting cell 14 is provided.
It is wide on the 15 side and becomes gradually narrower as it goes to the discharge section 16 side, and further, the sorting cell 14 is configured to be tiltable downward toward the discharge section side by the driving means 35 as in the above embodiment. Is also good.

[Brief description of drawings]

The drawing shows an embodiment of the present invention, FIG. 1 is a vertical sectional front view of a hulling sorting machine, FIG. 2 is an enlarged sectional view taken along line II-II of FIG.
The figure is an enlarged plan view of the main part of the disk, and Fig. 4 is the IV- of Fig. 3.
FIG. 5 is a sectional view taken along line IV, FIG. 5 is an enlarged sectional view taken along line VV of FIG. 3, and FIG. 6 is a sectional view showing another embodiment. 2 ... rectangular box, 3 ... hulling part, 4 ... wind selection part, 5
...... Disc rotation type sorting mechanism, 14 …… Sorting cell, 15 ……
Supplying unit, 16 ... Ejecting unit, 20 ... Rotating shaft, 21, 36 ... Disc, 22 ... Recess, 23 ... Brown rice gutter, 35 ... Driving means.

Claims (1)

[Claims] 1. A sorting cell at one end in the axial direction thereof,
A supply part of mixed rice of paddy and brown rice, a discharge part of the paddy is provided at the other end, respectively, in the sorting cell, a plurality of donut-shaped discs having a large number of recesses are formed in the axial direction. A disc rotary grain sorter, which is supported by an extending rotary shaft and is arranged to rotate, and wherein each of the discs is provided with brown rice gutters between the discs. The disc rotary grain sorter is characterized in that the arrangement intervals of the respective discs with respect to the axial direction of the disc are wide on the side of the supply unit and narrow on the side of the discharge unit.