JPH0741212B2 - 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]

By the way, in this type of grain selection device, when the type of grain and the size and shape of the grain are different, the size and shape of the recess are changed so that the grain fits exactly. It is desirable to replace it with a disk formed in this way. In addition, since dust that adheres to the grain accumulates in the sorting cell, it is necessary to clean it regularly.

However, in the grain sorting device of the prior art, the side plate in the sorting cell located in the direction orthogonal to the axis of the rotating shaft on which the disc is mounted is not removable, and the brown rice gutter provided between the discs is different from the sorting cell. Since it is firmly fixed, it is impossible to take out the disc from the sorting cell. Therefore, there is a problem in that the disc cannot be replaced and cleaning work inside the sorting cell is difficult.

The present invention aims to solve this problem.

[Means for solving problems]

To achieve this object, in the present invention, a rotary shaft is disposed in the body of the sorting cell in a direction orthogonal to the left and right side plates of the sorting cell, and a large number of recesses are formed on the surface of the rotary shaft. A plurality of donut-shaped discs are provided at appropriate intervals between the left and right side plates, while the sorting cell is provided with a supply unit for mixed rice of paddy and brown rice and a discharge unit for paddy, respectively. In the grain sorting device, the brown rice gutter provided between the discs is configured to be retractable outward in the radial direction of the discs, while at least one of the left and right side plates is provided on the body of the sorting cell. On the other hand, the disk is configured to be detachable, and the disks can be inserted into and removed from the selection cell.

[Operation and effect of invention]

In this way, the left and right side plates of the sorting cell are arranged at right angles to the axis of the rotating shaft that supports the disk arranged in the body of the sorting cell, and at least one of the left and right side plates is Since it is detachable, only the disc or the disc and the rotary shaft can be moved along the axial direction from the removed side plate portion, and can be put in and taken out from the trunk of the sorting cell.

In particular, when only the disc is detachable along the axis of the rotation shaft, the disc can be easily detached by removing only one side plate without disassembling the sorting cell. At this time, since the brown rice gutters are arranged between the discs, the presence of the brown rice gutters interferes with the removal of the discs. However, in the present invention, each brown rice gutter is retracted in the radial direction of the disc. When removing the disc, the brown rice gutter may be retracted so that it is located outside the outer circumference of the disc before it is taken out.When inserting the disc, the brown rice gutter is placed after the disc is put in the sorting cell. Should be inserted so as to be positioned between the disks.

As described above, according to the present invention, at least the disc can be easily put in and taken out from the sorting cell, and the disc can be easily replaced according to the type and size of the grain, and the sorting can be performed. The remarkable effect is that cleaning, inspection, and repair work inside the cell can be performed easily.

〔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 popper 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).

Each of the disks 11 has a center hole of the boss 11a fitted therein so as to rotate integrally with the rotating shaft 10 having a rectangular cross section or a spline shape. The length of each boss 11a is equal to that of the adjacent disks. 11 are set so as to be separated by a predetermined distance, and each disc 11 can be attached and detached in the axial direction of the rotating shaft 10 by tightening a nut 16 inside the other side plate 2a and removing the nut 16. To do. At this time, the free end of the rotary shaft 10 is set to 2 in the other side plate 2a.
It may be supported by a split bearing 17, or the other side plate 2a may be formed in two halves vertically or horizontally. Furthermore, the rotating shaft
The free end of 10 may not be supported by the other side plate 2a.

Incidentally, each of the plurality of recesses 12 in each of the discs 11,
As shown in FIGS. 3 to 5, the disk 11 has a semicircular shape in which the length dimension L in the circumferential direction of the disk 11 is made larger than the width dimension S of the disk 11 in the radial direction.
Is set to be smaller than the length dimension of brown rice and larger than the width dimension of brown rice, while one of the left and right inner side surfaces 12a, 12b in the longitudinal direction of each recess 12 is located in front of the disc rotation direction. The inner side surface 12a located on the inclined inner surface 12a is formed as an inclined surface having an angle θ (for example, about 15 degrees).
The length dimension L1 from the intersection of a and the bottom surface 12c to the other inner side surface 12b is substantially equal to the length dimension of brown rice, and the L is an intermediate length between the length dimension of brown rice and the length dimension of paddy. The depth T of each recess 12 is set to be substantially equal to the diameter of brown rice.

And a disc that should be replaced according to the size and type of grain
Each of the above dimensions of the recess 12 in 11 can be appropriately set to a corresponding dimension and shape.

Brown rice gutters 13a, 13b are respectively inserted in an inclined shape in the upper part between the discs 11 and in the upper part between the discs 11 and both side plates 2a, 2b of the sorting cell 2, and the brown rice gutters 13a, 13b The lower end of 13b communicates with a brown rice picking section 15 (not shown) from the brown rice extraction shout 15.

At this time, the brown rice gutters 13b at the inner surface portions of both side plates 2a and 2b of the sorting cell 2 are fixed to the side plates, and the other brown rice gutters 1
3a has its lower end pivotally attached to a support shaft 18 at a position outside the outer circumference of each disc 11, and the position of the upper end of each brown rice gutter 13a is inclined so as to adjust the perspective with respect to the lifting side of the brown rice by the disc 11. In addition to making it turnable, the brown rice gutter 13
The configuration is such that a can retreat largely to the outer peripheral side of the disk 11.

Reference numeral 19 is an auxiliary sorting plate which is disposed between the disks 11 and comes into contact with the upper surface of the fluidized bed A as appropriate. The width dimension of each auxiliary sorting plate 19 is determined by the dimension (H) between the adjacent disks 11 and 11. The narrow width is such that the paddy or the like can slip between the side edge of the auxiliary selection plate 19 and the surface of the disk 11. The base portion of each auxiliary sorting plate 19 is rotatably supported by the shaft 20 on the sorting cell 2 located outside the outer circumference of the disk 11, and the downward rotation angle of the auxiliary sorting plate 19 can be adjusted from outside the sorting cell. In addition to the above-mentioned configuration, the auxiliary sorting plate 19 can be rotated upward largely to be retracted from the outer circumference of the disk 11.

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, since the upper surface of the fluidized bed A is pressed against the lower surface of the auxiliary sorting plate 19 and a lateral force is applied, the mixed rice in the fluidized bed A easily moves toward the recess 12 side of the disc 11. The brown rice in the mixed rice easily fits into the recess 12 of the disc 11, while the paddy that does not enter the recess 12 is on the upper surface of the auxiliary sorting plate 19 through the gap between the left and right edges of the auxiliary sorting plate 19 and the disc 11. Since it wraps around and slides on the upper surface of the auxiliary sorting plate 19 and flows down toward the lower end of the fluidized bed A (bottom of the sorting cell) to easily accumulate, the brown rice sorting performance by the disk 11 can be improved.

Then, the brown rice in the mixed rice is dented in the recess 12 in each disk 11.
It is picked up so as to enter the brown rice gutter 13 by falling from the recess 12 after being lifted up to a high position.

In addition, in the embodiment, since the inclination angle of the brown rice gutter 13a can be changed, it is possible to adjust the place to receive the brown rice that falls after being fitted into the recess 12 and lifted, the sorting performance. It can be adjusted.

When replacing the disk 11 and cleaning the inside of the sorting cell 2,
First, the brown rice gutter 13a and the auxiliary selection plate 19 are largely flipped up to be positioned outside the outer circumference of the disk 11, and then the side plate 2b is removed (at this time, when one end of the rotary shaft 10 is supported by the bearing 17, The bearing 17 is also disassembled), then the nut 16 is loosened and the disks 11 are sequentially withdrawn.

It should be noted that, when a plurality of discs 11 are attached to and detached from the selection cell 2, the rotary shaft 10 to which the discs 11 are attached may be configured to be detachable in the axial direction thereof.
It is also possible to adopt a configuration in which the midway portion of 10 in the longitudinal direction can be divided.

Further, in order to prevent the brown rice gutters 13a from getting in the way when the discs are attached and detached, the brown rice gutters 13a are retracted radially outward from between the discs 11 instead of rotating as in the above embodiment, The brown rice gutter 13a may be configured to be pulled out along the longitudinal direction thereof.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a vertical sectional front view of a sorting device, Fig. 2 is a sectional view taken along line II-II of Fig. 1, and Fig. 3 is an enlarged plan view of an essential part of a disc. FIG. 5 is a sectional view taken along line IV-IV of FIG. 3, and FIG. 5 is a sectional view taken along line VV of FIG. 2 ... Sorting cell, 2a, 2b ... Left and right side plates, 2c ... Sorting cell body, 4 ... Supply section, 5 ... Ejection section, 10 ... Rotating shaft, 11 ... Disc, 11a. Boss part, 12 ... recess, 13
a, 13b …… Brown rice gutter, 17 …… Bearing, 18 …… Support shaft, 19…
… Auxiliary sorting plate, 20… Axis.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-62584 (JP, A) JP-A-63-62551 (JP, A) JP-A-56-136688 (JP, A) Japanese Patent Publication 3- 56114 (JP, B2) JP 33-2256 (JP, Y1) JP 58-42064 (JP, Y2) Patent 39385 (JP, C1)

Claims (1)

[Claims] 1. A donut-shaped disc having a rotary shaft disposed in the body of the sorting cell in a direction perpendicular to the left and right side plates of the sorting cell, and a plurality of recesses formed on the surface of the rotary shaft.
A plurality of discs are provided at appropriate intervals between the left and right side plates, while the sorting cell is provided with a pad feeding unit and a paddy discharging unit for the mixed rice of paddy and brown rice. , The brown rice gutter disposed between the respective discs is configured to be retractable outward in the radial direction of the discs, while at least one of the left and right side plates is detachably attached to the body of the sorting cell. A disc rotating type grain sorting device, characterized in that each disc is configured to be freely inserted into and removed from a sorting cell.