JPH0741209B2 - 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]

In the sorting cell, a rotary shaft is supported in parallel with the axis of the sorting cell, and a plurality of donut-shaped discs having a plurality of recesses formed on one or both sides are formed on the rotary shaft at appropriate intervals in the axial direction. On the other hand, the sorting cell is provided with a portion for supplying mixed rice of paddy and brown rice at one end in the axial direction thereof, and a portion for discharging paddy at the other end, and a brown rice gutter is provided between the discs. Disc rotating type grain sorting devices provided respectively have been proposed by JP-A-56-136688 as a prior art.

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. When repeating the flow, the brown rice in the mixed rice fits into the recess in the disc and falls from a high position, so that the brown rice falling from a high position is received by the brown rice gutter and taken out. Therefore, the brown rice sorting capability of this grain sorting device is such that when each disc passes through the fluidized bed of the mixed rice, the brown rice in the mixed rice can fit into each recess of the disc. Depending on the number of recesses, the larger the number of recesses in which brown rice fits, the higher the selection capability of brown rice.

[Problems to be solved by the invention]

However, in the sorting apparatus of the above-mentioned prior art, the mixed rice in the portion between the respective disks only flows in the rotational direction of the disk as the disk rotates, so that the recessed portion where the brown rice in the liquid mixed rice can fit There was a certain limit in the number of rice, that is, the selection ability of brown rice.

The present invention is intended to improve the selection capability of brown rice by increasing the number of recesses into which brown rice in fluidized rice can fit.

[Means for solving problems]

In order to achieve this object, the present invention provides a donut shape in which a rotary shaft is axially supported in a sorting cell in parallel with the axis of the sorting cell, and a plurality of recesses are formed on one or both sides of the rotary shaft. While a plurality of discs are provided at appropriate intervals in the axial direction, 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, respectively, and
In a disc rotary type grain sorting device comprising brown rice gutters provided between the respective discs, in the inner bottom portion of the sorting cell, mixed rice flowing with the rotation of the discs is provided on one side with a recess in the discs. Alternatively, the guide means is provided so as to be brought to both sides.

[Operation and effect of invention]

According to this structure, the mixed rice that flows with the rotation of the disc in the portion between the discs is brought to one side or both sides of the disc with the recess by the guide means during the flow.
As the disc passes through the bed of fluidized mixed rice, the number of recesses into which the brown rice fits can be increased compared to the case without the guide means.

Therefore, according to the present invention, while having a very simple structure in which the guide means is provided between the discs, there is an effect that the discriminating ability of brown rice in the disc rotary grain sorter can be greatly improved.

〔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 reselection type selection mechanism 5 includes a selection cell 14 having at least the lower half formed in a cylindrical shape. The selection cell 14 has a side plate 14a at one end in the axial direction and a supply hole 15 at the other end. Discharge holes 16 are respectively formed in the side plates 14b, and the tip of the mixed rice thrower 12 is opened in the hopper 17 connected to the supply hole 15, while the discharge holes 16 are discharged from the discharge holes 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 addition, each of the plurality of recesses 22 in each of the discs 21,
As shown in FIG. 7 to FIG. 9, the disk 21 has an oval shape in which the length L in the circumferential direction of the disk 21 is larger than the width 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 approximately equal to the diameter of brown rice.

The upper part between each disc 21, and the disc 21 and the sorting cell
Brown rice gutters 23 are respectively inserted in an inclined shape between the two side plates 14a and 14b of 14 and the lower ends of the brown rice gutters 23 are each provided with a brown rice removing shout 27 through the upper surface of the brown rice falling plate 24. It communicates with the 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.

Then, a plurality of guide plates 29 are provided on the inner bottom portion of the sorting cell 14 so as to face each of the surfaces of the discs 21 provided with the recesses 22, and each of the guide plates 29 is attached to the disc 21. In, the surface provided with the recess 22 is inclined so as to approach the outer peripheral portion of the disk 21.

Then, when the paddy is fed into the paddy supply hopper 6 in the paddy hull portion 3 during the paddy-rice sorting operation, the sludge removed from the paddy hull portion 3 causes the chaff to be sucked and dusted by the wind selector 4 in the wind selecting portion 4.
The mixed rice from which rice husks are removed by the wind selection is sucked into the mixed rice, enters the mixed rice receiving trough 9, and is supplied from the mixed rice thrower 12 into the selection cell 14 through its supply hole 15. .

The mixed rice thus supplied into the sorting cell 14 is rotated by the respective disks 21 and the double-dotted line arrow A in FIG.
As shown by (1), it is transported toward the discharge hole 16 while flowing so as to be lifted to a certain height and then dropped.

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 the finishing style was selected in 26, the brown rice removal shoot 27
While it is 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 proportion of the paddy increases as it approaches the discharge hole 16, and flows out from the discharge hole 16 into the paddy supply hopper 6 in the paddy hull portion 3, The de-action is performed again.

When the mixed rice flowing in the sorting cell 14 as indicated by the double-dashed line arrow A is lifted to a certain height with the rotation of each disc 21 and then falls, a recess is formed in each disc 21. By the inclined guide plate 29 provided so as to face the surface provided with 22 is guided so that the surface provided with the recess 22 in each disk 21 can be brought closer, in other words, to the flowing mixed rice, Since a component force that presses the mixed rice against the disk 21 can be imparted, the brown rice in the mixed rice can be fitted into many recesses 22, and as a result, the ability to select the brown rice can be improved. .

In the above embodiment, each guide plate 29 provided on the inner bottom portion of the sorting cell 14 was inclined so as to approach the disc at its outer peripheral portion.
As shown in FIG. 10 and FIG. 11, 29 is configured to be inclined so as to approach the surface provided with the recess 22 in each disc 21 at the rear portion in the rotational direction of the disc 21. Also has the same effects and advantages as described above.
It goes without saying that a combination of the inclination in the direction shown in the figure and the inclination in the direction shown in FIGS. 10 and 11 may be combined. In this case, since the thickness of the fluidized bed of the mixed rice in the sorting cell 14 tends to become thinner as it approaches the discharge hole 16, the height of each guide plate 29 becomes closer to the discharge hole 16 as shown in the drawing. It is more effective if it is constructed so that it becomes gradually higher.

Further, on the left and right side surfaces of each of the brown rice gutters 23, only the portion where the brown rice gutter 23 crosses the surface of the donut-shaped disc 21 is made of an elastic material such as rubber so as to be close to or in contact with the surface of the disc 21. By providing the scraping plate 30 made of, it is possible to increase the amount of brown rice taken into the brown rice gutter 23.

[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.
FIG. 4 is a sectional view taken along line III-III in FIG. 2, and FIG. 4 is IV- in FIG.
IV sectional view, FIG. 5 is an enlarged sectional view taken along line VV of FIG. 4, FIG. 6 is an enlarged sectional view taken along line VI-VI of FIG. 4, and FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7, FIG. 9 is a sectional view taken along line IX-IX in FIG. 7, FIG. 10 is a sectional view showing another embodiment, and FIG. 11 is shown in FIG. It is a XI-XI sectional view. 2 ... rectangular box, 3 ... hulling part, 4 ... wind selection part, 5
...... Disc rotation type sorting mechanism, 14 …… Sorting cell, 15 ……
Supply hole, 16 ... discharge hole, 20 ... rotary shaft, 21 ... disk, 22 ... recess, 23 ... brown rice gutter, 29 ... guide plate.

Claims (1)

[Claims] 1. A donut-shaped disc having a rotary shaft axially supported in the sorting cell parallel to the axis of the sorting cell, and having a plurality of recesses formed on one or both sides of the rotary shaft in the axial direction. While providing a plurality of sheets at 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 thereof, and a portion for discharging paddy at the other end, and between the discs. In a disc rotary type grain sorting device provided with brown rice gutters respectively, in the inner bottom portion of the sorting cell, the mixed rice flowing with the rotation of the disc is brought to one side or both sides with a recess in the disc. A disc rotating type grain sorting device, which is provided with the above-mentioned guide means.