JPS63197587A - 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 relates to the structure of a grain sorting device for separating brown rice from mixed rice after hulling.

[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 mixed rice of paddy and brown rice at one end in the axial direction, and a paddy discharge section at the other end, and a brown rice receiving gutter is provided between each of the disks. A disk rotary grain sorting device comprising a rotary disk type grain sorting device 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]

In this case, the brown rice in the fluidized bed fits into the recesses of each disk on the raking side of the disk, and the brown rice falls out of each recess above the brown rice receiving gutter located on the opposite side to the raking side. The brown rice that falls onto the trough is taken out of the machine. However, if the brown rice remains stuck in the recesses, a so-called clogging condition, new rice will be removed when the recesses of the disk pass through the fluidized bed. Since the brown rice cannot be scraped up, the sorting ability is greatly reduced.

In order to solve this problem, in the prior art, each disk is made of an elastic material such as urethane rubber, and an eccentric roller is pressed against the outer periphery of the disk at a position above the brown rice receiving trough. The board surface is deformed so that brown rice can easily fall from the recesses.

However, forming the entire disk from an elastic material tends to lack strength against rotational centrifugal force, so manufacturing a disk made from an elastic material is too costly.
Because the eccentric roller that presses the disk presses against the outer periphery of the disk, extra rotational driving force for the disk is required.

Furthermore, since the disk is repeatedly pressed and deformed locally by the eccentric roller, there is a problem in that the durability of the disk becomes extremely poor.

An object of the present invention is to eliminate clogging of a disk using a simple device.

[Means to solve the problem]

In order to achieve this object, the present invention provides a rotating shaft arranged approximately horizontally in the body of the sorting cell, and a donut-shaped or disk-shaped shaft having a large number of recesses formed on the surface of the rotating shaft. The sorting cell is a rotary grain type disc comprising a plurality of discs provided at appropriate intervals, and the sorting cell is provided with a supply section for a mixture of paddy and brown rice at one end, and a discharge section for paddy at the other end. In the grain sorting device, a brown rice receiving gutter is provided between each of the disks on the side opposite to the side where the mixed rice is scraped up by the disk, and a recess on the surface of the disk is provided above each brown rice receiving gutter. A reflector plate is provided to reflect the brown rice falling from the disk and make it collide with the brown rice in another recess of the disk.

[Action/effect of the invention]

In this way, in the present invention, since the reflective plate is disposed above the brown rice receiving gutter which is disposed on the side opposite to the side where the mixed rice is scraped up by the disk, the brown rice falling from above is reflected onto the reflective plate. When the disc hits, the direction of the drop can be changed and it can collide with brown rice that fits into a recess in another part of the disc.

Therefore, due to the impact force of the collision, the brown rice stuck in the recess is easily removed from the recess, making it easy to clear the clogging of the disk, and all the brown rice that has come out of the recess is transferred to the brown rice receiving gutter. Since the filter can be received at the machine and taken out of the machine, it has the effect that there is no reduction in sorting ability.

In addition, in the present invention, since the reflector does not come into contact with the disk, there is no loss of driving force for the disk (
Furthermore, it has the remarkable effect of being simple in structure.

〔Example〕

Below, the drawings of an embodiment in which the present invention is applied to a grain sorting mechanism in a hulling sorting machine will be explained. The disk rotary sorting device 1 winds the hulled rice after dehulling in the hulling section (not shown). After being sorted into rice husks and mixed rice, the mixed rice is sorted into brown rice and paddy by a disk 11 arranged horizontally in the body 2C of the sorting cell 2. , the supply section 4 is on the - side plate 2a, and the supply part 4 is on the other side plate 2b.
A discharge portion 5 is provided in each of the holes.

Further, a mixed rice thrower from the wind sorting section is connected to the hopper 6 connected to the supply section 4, while the paddy discharged from the discharging section 5 is transferred to the discharging section 5. A reflux chute 7 for refluxing water into the supply hopper is connected, and a residual rice discharge valve 9 is installed on the bottom of the body 2C of the sorting cell 2.
is provided so that it can be opened and closed freely.

Inside the sorting cell 2, a rotating shaft 10 which is rotated at an appropriate speed by a motor is supported substantially horizontally on both left and right side plates 2a and 2b parallel to the axis of the sorting cell 2. A plurality of donut-shaped disks 11 are provided at appropriate intervals in the axial direction, each having a large number of recesses 12 engraved on one or both sides with dimensions such that brown rice can fit into them but paddy cannot fit into them. (However, the drawing is on disk 11.
(This shows the case where recesses 12 are carved on both sides of the plate.)

Note that each of the multiple recesses 12 in each disk 11
As shown in FIGS. 5 to 7, the disk 11 has an elongated semicircular shape in which the length in the circumferential direction is larger than the width S in the radial direction of the disk 11, 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 12
Of the left and right inner surfaces 12a and 12b in the longitudinal direction, the inner surface 12 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 12a and the bottom surface 12C to the other inner surface 12b is the length of brown rice. The depth T of the recess 12 is approximately equal to the diameter of the unpolished rice, and the depth T of the recess 12 is approximately equal to the diameter of the unpolished rice. The dimensions are set.

In the upper part between each of the disks 11 and the upper part between the disk 1 and the side plates 2a and 2b of the sorting cell 2, a brown rice receiving trough 13 is provided on the side opposite to the side where the mixed rice is scraped up by the respective disks.
are inserted in an inclined manner, and the lower end of each brown rice receiving trough 13 communicates from a brown rice take-out chute to a brown rice winding section (not shown).

Between each disk 11, a reflecting plate 14 having an inverted V-shaped cross section is disposed above the brown rice receiving channel 13 in an inclined shape substantially parallel to the brown rice light [13], and each of the reflecting plates 14 Board 14
is suspended from the top Fi2d of the sorting cell 2 via stays 15 and 15.

The grained rice that has been made into a membrane in the hulling section is then air sorted in the wind sorting section so that the rice husks are sucked into the suction dust fan. The mixed rice from which the rice husks have been removed by wind sorting is fed into the sorting cell 2 from a feeding section 4 on one side plate 2a of the mixed rice thrower.

The mixed rice thus supplied into the sorting cell 2 is raised between the rotating disk 11 to a certain height as shown by the double-dashed arrow in FIG. 1, and then falls. It is transferred toward the discharge section 5 while forming a flowing fluid HA.

Then, the brown rice B1 in the mixed rice is sorted so that it fits into the recess 12 of each disk 11 and is lifted up to a high position, and then falls off from the recess 12 and enters the brown rice receiving gutter 13. Ru.

In this case, the falling brown rice B1 is bounced off the reflection plate 14 and flies toward the surface of the rotating disk 11. At that time, the reflection angle is generally not perpendicular to the surface of the disk 11 but oblique, so another recess 1
When the reflected brown rice B1 collides with the edge etc. of the brown rice B2 fitted in the recess 12, the brown rice B2 in the recess 12 can fall off from the recess 12 due to the impact force of the collision. It is possible to eliminate the state in which brown rice remains stuck in the recess 12, that is, the clogging state, and it is possible to prevent the sorting ability from deteriorating.

All the brown rice that has fallen out of the recess 12 is transferred to the brown rice receiving gutter 13.
It can be taken out of the aircraft by receiving it at the

According to the present invention, by simply inserting a reflective plate between each disk, the falling energy of brown rice falling from a high point on the disk can be effectively used to prevent clogging, and the structure of the clogging prevention device This has the remarkable effect that it is extremely simple and there is no loss of driving force for disk rotation.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, in which FIG. 1 is a longitudinal sectional front view of a disk rotary sorting device, FIG. 2 is a sectional view taken along the line nn in FIG. 1, and FIG. 4 is an enlarged sectional view of the main part of FIG. 2, FIG. 5 is a front view of the main part of the disk, FIG. 6 is a sectional view taken along the line vr--■ of FIG. 5, and FIG. A cross-sectional view taken along the line ■-■ in FIG. 1... Disk rotary sorting device, 2... Sorting cell, 'la, 'lb... Left and right side plates, 2c...
Sorting cell body, 4...supply section, 5...discharge section, 1o...rotating shaft, 11...disc, 12...
... recess, 13 ... brown rice catcher, 14 ... reflector, 15.15 ... stay.

Claims (1)

[Claims] (1) A rotating shaft is disposed approximately horizontally in the body of the sorting cell, and a plurality of donut-shaped or disk-shaped disks with many recesses formed on the surface are arranged on the rotating shaft at appropriate intervals. In the disk rotary grain sorting device, the sorting cell is provided with a mixed rice supply section of paddy and brown rice at one end thereof and a paddy discharge section at the other end. Between the disks, a brown rice receiving gutter is arranged on the opposite side to the side where the mixed rice is scraped up by the disk, and at the upper position of each brown rice receiving gutter, brown rice falling from the recesses on the surface of the disk is reflected. A rotary disk type grain sorting device characterized by being provided with a reflecting plate that causes the grains to collide with each other toward brown rice in another recess of the disk.