JPS63274477A - Disk revolution type cereal grain selector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a method for sorting 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 the structure of a grain sorting device.

[Conventional technology]

A rotating shaft is supported in a substantially horizontal manner within the sorting cell, and a plurality of donut-shaped disks each having a large number of recesses formed on one or both sides are provided on the rotating shaft at appropriate intervals in the axial direction; The sorting cell is provided with a supply section for a mixture of paddy and brown rice at one end in the axial direction, and a paddy discharge section at the other end, and 1. A disk rotary grain sorting device each provided with brown rice receiving troughs has been proposed in Japanese Patent Application Laid-Open No. 136688/1988 as a prior art.

In the disk rotating grain sorting device, the mixed rice fed into the sorting cell from the supply section at one end is lifted up to a height formed by the rotation of the disks in the area between the disks, and then falls. When the flow is repeated, the brown rice in the fluidized bed fits into the recess in the disk and falls from a high position. This is used to catch the brown rice falling from a high position into the brown rice receiving gutter and take it out. It is.

[Problem that the invention seeks to solve]

Incidentally, the mixed rice after hulling contains not only paddy and brown rice but also small rice and waste rice, and in the recesses on the surface of each disk, it is easy to pick up the small rice and waste rice in addition to the brown rice.

Therefore, if the contamination rate of small grains or the like is high, there is a problem that the sorting efficiency by the disk becomes poor.

In addition, brown rice mixed with small rice and scrap rice will enter the brown rice catcher, and this will be mixed with vertical line rice i! [Selected again for 1st prize,
There was a problem in that it was necessary to sieve out small rice and waste rice, making the finishing work twice and resulting in poor work efficiency.

The present invention aims to solve this problem.

[Means to solve the problem]

In order to achieve this object, the present invention provides a donut socket in which a rotating shaft is disposed approximately horizontally in the body of a horizontally installed cylindrical sorting cell, and a number of recesses are formed on the surface of the rotating shaft. A plurality of shaped disks are provided at appropriate intervals, and an inclined finishing rice gutter placed between each disk is communicated with a conveyor receiving gutter along the axis of the sorting cell. A supply section for mixed rice containing rice and brown rice is provided at the other end, and a discharge section for paddy is provided at the other end, and a number of discharge holes for discharging small rice and waste rice are bored in the cylindrical body of the sorting cell, In addition, the sorting cell is configured to be rotationally driven.

[Action/effect of the invention]

As described above, in the present invention, a plurality of disks provided on a rotating shaft disposed substantially horizontally are disposed within the body of a rotating cylindrical sorting cell, and moreover, the body of the rotating sorting cell has a large number of discharge holes through which small rice and waste rice can be discharged, so that the small rice and waste rice in the mixed rice supplied from one end of the sorting cell are discharged through the sorting cell according to the rotation of the sorting cell. It will be easily discharged from the discharge hole of the cell, while only the brown rice can be scooped up in the recess on the surface of the disk and taken out from the finishing rice trough via the conveyor receiving trough.
At the other end of the sorting cell, only the paddy is discharged.
It is possible to sort brown rice, paddy, small rice, and scrap rice from mixed rice all at once, and the efficiency of sorting work can be greatly improved.

In addition, rice bran is mixed in the mixed rice, but this can also be discharged through the discharge hole of the sorting cell, which reduces malfunctions such as clogging of the concavity of the disk with rice bran, and makes it necessary to clean the sorting device more frequently. You can also do less.

Furthermore, in the past, two machines were required: a sorting device to sort brown rice from mixed rice, and a rice sorter for small rice and waste rice in brown rice, but according to the present invention, only one machine is required. This has the remarkable effect of significantly reducing costs.

〔Example〕

The drawings of an embodiment in which the present invention is applied to a grain sorting mechanism in a rice hulling sorting machine will be explained below.A disk rotary sorting device 1 has a cylindrical sorting cell 3 whose axis is horizontal in a machine frame 2. and a plurality of disks 17 disposed on the inner diameter of the sorting cell 3, and the cylindrical body 3C of the sorting cell 3 is provided with a discharge hole 5 through which small rice and waste rice can be discharged in a radial outward direction. There are many holes.

The lower portions of both front and rear ends of the sorting cell 3 are placed on rotary rollers 7, 7 fixed to a pair of left and right support shafts 6, 6 horizontally disposed within the machine frame 2, and are driven by a drive motor (not shown). 6, 6 rotates, the sorting cell 3 becomes the second
Rotate in the direction of the arrow in the figure.

One end of the sorting cell 3 in the longitudinal direction has a side plate 3a fixed to it, and the supply part 8 from the machine frame 2 faces into the body part 3C from the center hole of the side plate 3a, and the membrane is removed at the hulling part (not shown). After the hulled rice is sorted into rice husks and mixed rice by wind selection, the mixed rice is supplied into a sorting cell 2.

An operating shaft 9 that can be rotated from the outside of the machine frame 2 is provided adjacent to the other longitudinal end 3b of the sorting cell 3, and the operating shaft 9 includes:
A bow-shaped gate plate 10 is fixed to cover the side surface of the trunk 3C near the bottom near the other end 3b, and the paddy is removed by climbing over the upper edge of the gate plate 10 or through the gap between the gate plate 10 and the other end 3b. A discharge part 11 for discharging is formed, and a reflux chute 12 is connected to the paddy discharge part 11 for refluxing the paddy discharged from the chaff into the paddy supply hopper in the hulling part.

In the machine frame 2 below the sorting cell 3, there is provided a small rice receiving trough 14 equipped with a longitudinal screw conveyor 13 parallel to its axis, and the rice is discharged from the discharge hole 5 of the body 3C of the sorting cell 3. The machine is configured to discharge small rice and waste rice from a discharge chute 15 to the outside of the machine.

Inside the sorting cell 3, a rotating shaft 16 is disposed parallel to the axis of the sorting cell 3 at a lower position and driven at an appropriate rotational speed by a motor (not shown), and both ends of the rotating shaft 16 are rotatably supported on the machine frame 2. A donut-shaped disk 1 is mounted on the rotating shaft 16.
7 are fixed at appropriate intervals in the axial direction.

Each disk 4 is provided with a large number of recesses 19 on one or both sides thereof, the dimensions of which allow brown rice to fit into it, but not paddy. 1
9 is engraved).

Note that each of the multiple recesses 19 in each disk 17
As shown in FIGS. 3 to 5, the disk 17 has a semi-elliptic shape in which the length in the circumferential direction is larger than the width S in the radial direction of the disk 17, and the width in the radial direction is The dimension S is set to be smaller than the length dimension of brown rice and larger than the width dimension of brown rice, while each recess 19
Among the left and right inner surfaces 19a and 19b in the longitudinal direction, the inner surface 19 is located on the front side with respect to the disk rotation direction.
a is formed into an inclined surface with an appropriate angle θ (for example, about 15 degrees), and the length L1 from the intersection of the inclined inner surface 19a and the bottom surface 19c to the other inner surface 19b is the length of brown rice. The dimensions are set to intermediate lengths between the length of unpolished rice and the length of paddy, and the depth T of the recess 19 is approximately equal to the diameter of unpolished rice. The dimensions are set.

Finishing rice troughs 20 are inserted in an inclined manner into the upper portions between the disks 17 and between the disks 17 and the front and rear ends of the sorting cells 2, and the lower ends of the finishing rice troughs 20 Screw conveyor 2 along the longitudinal direction of the cell 3
2, and one end of the conveyor receiving gutter 21 communicates from a brown rice take-out chute 23 to a brown rice winding part (not shown).

With this configuration, the grained rice that has been dehulled in the hulling section is air sorted in the wind sorting section so that the rice husks are sucked by the suction dust exhaust fan. The mixed rice from which the chaff has been removed through wind selection is
Mixed rice is supplied into the sorting cell 3 from the supply section 8 by a rice thrower (not shown).

The small rice, waste rice, and rice bran in the mixed rice thus supplied into the sorting cell 3 are discharged radially outward from the discharge hole 5 of the rotating body 3C, and the small rice below the sorting cell 3 is discharged. It falls into the receiving gutter 14, is sent by the screw conveyor 13, and is discharged from the discharge chute 15 to the outside of the machine.

On the other hand, after being lifted up to a certain height as shown by the two-dot chain arrow in FIG. The liquid is transferred toward the discharge section 11 while forming a fluidized bed C that flows as if falling.

Then, the brown rice in the mixed rice is fitted into the recess 19 of each disk 17 and lifted up to a high position.
The rice is sorted to enter the finished rice trough 20 by falling from the rice trough 9, collected in the conveyor receiving trough 21, and sent toward the reflux chute 23 by the screw conveyor 22 on the inner diameter thereof.

During this flow, the body 3C located close to the supply section 8 side
Since small grains and waste rice are discharged outside from the discharge hole 5 in advance, such small grains, etc. can damage the recess 19 on the disk surface.
is not occupied, brown rice is reliably placed in the recess 19, and the sorting performance and efficiency are not hindered.

In addition, in order to adjust the thickness of the fluidized bed C on the other end discharge part 11 side of the sorting cell 3, it is sufficient to adjust the opening degree of the gate plate 10. In order to release the rice, the gate plate IO can be opened wide.

Note that the intervals between the disks 17 in the axial direction of the rotating shaft 16 may be equal intervals, or may be set to become narrower toward the discharge portion ll side.

Furthermore, the inner diameter of the disk 17 may be formed so as to gradually increase toward the discharge portion 11 side. In this way, the recess 1 in the disk on the side of the mixed rice supply section 8
The number of 2 is also inevitably increased, and a large amount of brown rice can be scooped up efficiently at a location near the supply section where the mixing rate of brown rice is high and the thickness of the fluidized bed C is thick.

Reference numeral 24 in FIG. 2 is a clogging prevention plate, and the base end of the clogging prevention plate 24 is fixed to an appropriate location on the machine frame 2, and the tip is slidably contacted with the outer surface of the body 3C of the sorting cell. It is possible to remove small grains etc. that are clogged in the discharge hole 5 in the body C. At this time, a brush 2 is attached to the tip of the clogging prevention plate 24.
5 may be attached.

The rotation direction of the sorting cell 3 is the rotation direction of the disk 17 (
If the direction is the same as arrow B), the height position at which the mixed rice is raked up by the sorting cell 3 becomes higher, and it becomes easier to separate the paddy from the brown rice when the humidity of the mixed rice is high. In this case, if the height position of the upper end of the finishing rice gutter 20 is configured to be changeable, the adjustment of the sorting performance can be further improved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional front view of the sorting device, FIG. 2 is a sectional view taken along line nn of FIG. 1, FIG. The figure is fV-IV in Figure 3.
5 is a sectional view taken along the line V-V in FIG. 3. 3... sorting cell, 3C... body of sorting cell, 5
...Discharge hole, 6.. Support shaft, 7.. Rotating roller, 8.. Supply section, 11.. Discharge section, 14.
... Xiaomi catch gutter, 13 ... Screw conveyor, 1
6...rotating shaft, 17...disk, 19...
・Concavity, 20...Finishing rice gutter, 21...Conveyor receiving gutter.

Claims (1)

[Claims] (1) A rotating shaft is arranged approximately horizontally in the body of a horizontally installed cylindrical sorting cell, and donut-shaped disks with a number of recesses formed on the surface are placed on the rotating shaft at appropriate intervals. A plurality of discs are provided, and an inclined finishing rice gutter arranged between each disc is communicated with a conveyor receiving gutter along the axis of the sorting cell,
One end of the sorting cell is provided with a supply section for a mixture of paddy and brown rice, and the other end is provided with a paddy discharge section, and small rice and waste rice can be discharged from the cylindrical body of the sorting cell. A disk rotary grain sorting device characterized by having a large number of discharge holes and configured to drive the sorting cell rotationally.