JPH0741213B2 - 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 plurality of donut-shaped disks each having a large number of recesses on the surface. The present invention relates to a grain selection device.

[Conventional technology]

In the sorting cell, the rotary shaft is rotatably supported in a substantially horizontal direction, and while the rotary shaft is provided with a plurality of donut-shaped discs having a plurality of recesses formed on one or both sides in the axial direction at appropriate intervals,
The sorting cell is provided with a portion for supplying mixed rice of paddy and brown rice at one end in the axial direction, and a portion for discharging paddy at the other end, and brown rice gutters are provided between the discs. A disk rotating type grain sorting device constituted by the above is proposed by Japanese Patent Laid-Open No. 56-136688 as a prior art.

In the disc rotating type grain sorting device, the mixed rice fed from the feeding unit 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. When repeated flowing, the brown rice in this fluidized bed was fitted into the recess in the disc and dropped from a high position, so that the brown rice falling from a high position was received by the brown rice gutter and taken out. It is a thing.

[Problems to be solved by the invention]

Thus, the fluidized bed formed between the rotating discs in the sorting cell and between the fixed side plate of the sorting cell and the rotating disc is lifted to a certain height by the upward rotation of the disc. The brown rice gradually fits into the recess of each disc, but on the upper surface side of this fluidized bed, the mixed rice easily flows in the direction away from the surface of the rotating disc, and the brown rice in the mixed rice becomes There was a problem that the chance of fitting in the recess was reduced and the sorting ability was reduced.

In addition, the rice in the mixed rice is jumped up by the rotating disk and falls more often in the brown rice receiving trough where only brown rice should be received. There was also a problem that it would decrease.

The present invention aims to solve the above problems by a simple device.

[Means for solving problems]

In order to achieve this object, the present invention has a rotating shaft arranged in a substantially horizontal shape in a sorting cell, and a plurality of donut-shaped discs having a plurality of recesses formed on the surface thereof are arranged at appropriate intervals on the rotating shaft. On the other hand, a disc rotary type in which the sorting cell is provided with a rice supply unit and a rice discharge unit for the mixed rice of paddy and brown rice, and a brown rice gutter is provided between the discs In the grain sorting device, an auxiliary sorting plate that is in contact with the upper surface of the fluidized bed of the mixed rice in the sorting cell is disposed between the discs with a proper gap from the surface of each disc having the recess. .

[Operation and effect of invention]

In this way, in the sorting cell, since the auxiliary sorting plate is provided so as to contact the upper surface of the fluidized bed formed between the rotating discs, the mixed rice that is lifted along the surface of the rotating discs is At the upper surface of the fluidized bed, a lateral force is applied by the lower surface of the auxiliary sorting plate to approach the direction of the recess in the disc, and brown rice is easily fitted into the recess.

As described above, according to the present invention, it is possible to easily achieve the improvement of the sorting ability and the sorting accuracy.

〔Example〕

Explaining the drawings of the examples in which the present invention is applied to a grain selection mechanism in a hull sorting machine, the disk rotary sorting device 1 wind-selects hulled rice after removal at a hulling part (not shown). After the rice is separated into rice husks and mixed rice by the above-mentioned method, the mixed rice is separated into brown rice and rice by the horizontally arranged disc 11 in the body 2c of the selection cell 2.
The lower half of the body portion 2c is formed into a substantially cylindrical shape, and the sorting cell 2 is provided with a supply portion 4 on the upper portion of the body portion 2c near the one side plate 2a and a discharge portion 5 on the other side plate 2b. Then, the other side plate 2b is detachably attached to the body portion 2c of the sorting cell via the butterfly bolts 14 and the like.

The hopper 6 connected to the supply unit 4 is connected to the mixed rice thrower from the wind selection unit, while the discharge unit 5 supplies the paddy discharged from the discharge unit 5 to the paddy in the paddy section. A recirculation chute 7 for recirculating into the hopper is connected.

A remaining rice discharge valve (not shown) is provided on the bottom surface of the body 2c of the sorting cell 2 so as to be openable and closable.

In the sorting cell 2, a rotary shaft 10 which is rotationally driven at an appropriate speed by a motor is axially supported at both left and right side plates 2a and 2b in parallel with the axis of the sorting cell 2, and the rotary shaft 10 has one side. Alternatively, a plurality of donut-shaped discs 11 each having a plurality of recesses 12 set to have a size such that brown rice fits but paddy does not fit are provided at appropriate intervals in the axial direction (however, , The drawing shows the case where the recesses 12 are formed on both sides of the disk 11).

Brown rice gutters 13 are slantedly inserted in the upper part between the discs 11 and between the discs 11 and both side plates 2a, 2b of the sorting cell 2, and the lower ends of the brown rice gutters 13 are , From the brown rice extract short 15 to the brown rice wind selection section (not shown).

Reference numeral 16 is an auxiliary sorting plate which is disposed between the disks 11 and is brought into contact with the upper surface of the fluidized bed A as appropriate. The width dimension (W1) of each auxiliary sorting plate 16 is the dimension between the adjacent disks 11 and 11 ( W2)
With a narrower width, the paddy or the like can pass through the side edge of the auxiliary selection plate 16 and the surface of the disk 11, and
The width dimension (W1) of the auxiliary sorting plate 16 is formed to be narrower or substantially equal to the width dimension (W3) of the brown rice gutter 13.

Then, the base portion of each of the auxiliary sorting plates 16 is fixed to a supporting shaft 17 disposed substantially parallel to the rotating shaft 10 on the sorting cell 2 located outside the outer circumference of the disk 11, and a handle 18 from the outside of the sorting cell 2 is provided.
It is configured such that the downward inclination angle of the auxiliary sorting plate 16 can be changed and adjusted all at once by operation or the like.

Then, the slid-down rice removed in the hulling section is subjected to wind sorting in the wind sorting section so that the chaff is sucked by the suction dust fan. The mixed rice from which the rice husks have been removed by the wind selection is supplied from the supply unit 4 above the position closer to the one side plate 2a into the selection cell 2 from the mixed rice thrower.

The mixed rice thus fed into the sorting cell 2 is mixed with the rotating disk 11 by the arrow B indicated by the alternate long and short dash line in FIG.
As shown by (4), it is lifted up to a certain height and then transferred toward the discharge part 5 while flowing so as to drop.

During this flow, the upper surface of the fluidized bed A is pressed against the lower surface of the auxiliary sorting plate 16 and a lateral force is applied to the ascending mixed rice, so that the mixed rice in the fluidized bed A has a recess 12 in the disk 11. It becomes easier to move toward the side, brown rice in the mixed rice easily fits in the recess 12 in the disk 11, brown rice fits in the recess 12 in each disk 11 and is lifted to a high position, and then from the recess 12 Brown rice gutter 13 by falling
Selected to enter.

If the lower edge of the auxiliary sorting plate 16 is formed so as to end at a position higher than the inner diameter edge of the disk 11, mixed rice will pass from the upper surface side of the fluidized bed A through the inner diameter edge of the disk 11 and the back surface side of the disk. It is easy to get around.

Therefore, the paddy once lifted by the disk 11 is less likely to be lifted again by the recess 12 on the same surface of the disk 11, and the selection performance of brown rice can be greatly improved.

As described above, according to the present invention, it is possible to easily achieve the improvement of the sorting ability and the sorting accuracy.

In the above embodiment, the inclination angles of all the auxiliary sorting plates 16 can be changed all at once, but the inclination angles of the auxiliary sorting plates 16 can be changed and adjusted for each disc 11 and 11. good.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a vertical sectional front view of a sorting apparatus, Fig. 2 is a sectional view taken along line II-II of Fig. 1, and Fig. 3 is a sectional view taken along line III-III of Fig. 1. FIG. 4 is an enlarged cross-sectional view of the main part of FIG. 2 ... Sorting cell, 2a, 2b ... Left and right side plates, 2c ... Body of sorting cell, 4 ... Supply section, 5 ... Ejection section, 10 ... Rotating shaft, 11 ... Disc, 12 ... Recess, 13 …… Brown rice gutter, 16
…… Auxiliary sorting plate, 17 …… Support shaft, 18 …… Handle.

Claims (1)

[Claims] 1. A rotary shaft is arranged in a substantially horizontal shape in a sorting cell,
On the rotary shaft, a plurality of donut-shaped disks each having a plurality of recesses formed on the surface thereof are provided at appropriate intervals, while the sorting cell has a supply section for mixed rice of paddy and brown rice and a discharge section for paddy. In a disc rotary type grain sorting apparatus in which each of the discs is provided with brown rice gutters between the discs, the discs are in contact with the upper surface of the fluidized bed of the mixed rice in the sorting cell between the discs. A disc rotating type grain sorting device, wherein an auxiliary sorting plate is arranged with a gap appropriately provided between each disc and a surface having a recess.