JPS6397278A - Disk rotary type cereal grain selector - Google Patents

Abstract

(57) [Abstract] 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 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]

Therefore, in this type of grain sorting device, the brown rice and paddy that are not received by the brown rice receiving trough of each disk out of the mixed rice in the fluidized bed between each disk are removed from the hole on the inner diameter side of the donut-shaped disk. Once the paddy flows through the gap between the outer diameter of each disk and the bottom of the sorting cell toward the paddy discharge side, it no longer returns to the supply side, so the fluidized bed in each disk is different from that of the disk at the same location. There is less chance of contact with the rice, and the rice flows to the discharge section without being subjected to much sorting action by the disk, increasing the rate of brown rice being mixed into the paddy discharged from the discharge section, improving sorting efficiency. The problem was that it was difficult to do so.

The present invention aims to solve this problem.

[Means to solve the problem]

In order to achieve this object, the present invention has a rotating shaft disposed approximately horizontally in the body of the sorting cell, and a donut-shaped disk having a large number of recesses formed on the surface of the rotating shaft, as appropriate. A plurality of disks are provided at intervals, and the sorting cell is provided with a supply section for a mixture of paddy and brown rice at one end, a discharge section for paddy at the other end, and a brown rice receiving section between each disk. In a disk rotating type grain sorting device provided with a gutter, a return gutter is provided between any pair of adjacent disks, and the grain is lifted up by the rotation of both disks and placed in front of the brown rice receiving gutter. The mixed rice falling to the side is returned to the part facing the supply part on the disc located on the supply part side of the pair of discs sandwiching the return gutter.

[Action/effect of the invention]

In this way, in the present invention, the fluidized bed of mixed rice between the pair of donut-shaped disks facing each other is lifted upward by the rotation of the disks and enters the brown rice receiving trough.
The mixed rice that does not enter the brown rice receiving trough usually falls down and mixes with the fluidized bed below, or tends to flow toward the discharge section, but according to the present invention, the mixed rice is By providing a return gutter, the mixed rice that was lifted up by both discs and fell before the brown rice receiving gutter can be received by the gutter, and the mixed rice of the returned soil can be received by the gutter. Since the structure is such that the rice returns to the point between the pair of disks that is one step closer to the supply section than between the disposed disks, the mixed rice that has been lifted by the disks returns to the supply section side again and is By scooping up the brown rice in the recesses on the surface of the disk at certain points, it is possible to subject a portion of the fluidized bed to a redundant sorting action, which significantly improves the sorting ability of the sorting device. It has a great effect.

〔Example〕

Below, 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 described. The disc rotary sorting device 1 winds the hulled rice after being weighed in a hulling section (not shown). After being sorted into rice husks and mixed rice in the sorting process, 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 is connected for reflux into the feed hopper.

Further, on the bottom surface of the body 2c of the sorting cell 2, a residual rice discharge valve 9 is provided so as to be openable and closable.

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 a recess 12 is carved on one side of both 6).

Note that each of the multiple recesses 12 in each disk 11
As shown in FIGS. 4 to 6, the disk 11 has an elliptical 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 S is set to be smaller than the length dimension of brown rice and larger than the width dimension of brown rice, while S is set to be smaller than the length dimension of brown rice and larger than the width dimension of brown rice.
Inner surfaces 1 and 2 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 brown rice, and the depth T of the recess 12 is approximately equal to the diameter of the brown rice. The dimensions are set.

In the upper part between each of the disks 11 and in the upper part between the disk 11 and the side plates 2a and 2b of the sorting cell 2, a brown rice receiving trough 13 has its upper end located on the upper end side of the disc 11 and its lower end side. Each disk is inserted in an inclined manner so that the recess 12 of the disk is located on the side that moves downward, and the lower end of each brown rice receiving gutter 13 is connected from the brown rice take-out chute 15 to the brown rice sorting section (
(not shown).

And, between each of the doughnut-shaped disks 11, there is a vertical midway position between the upper surface of the flow mA of mixed rice formed between the respective disks 11 and the lower surface of each of the brown rice receiving channels 13, and the mixed rice lifting side by the disks 11. The return N116 is arranged at an angle. Each return gutter 16 has its upper end connected to the disk 1.
The lower end of the return gutter 16 is extended radially inward from the inner diameter edge 11a of the disk 11, and the cross section of each return gutter 16 is
As shown in FIG. 2, a vertical lip portion 16a that extends approximately along the rotating surface of the disk 11 on the discharge section side is formed into a flow plate section 16b whose upper surface is inclined diagonally downward toward the supply section 4 side. The mixed rice is formed into an abbreviated shape, and is lifted up by the rotation of both disks 11 and 11 on the left and right sides of this return gutter 16 and falls to the front side of the brown rice receiving gutter 13, between the pair of adjacent disks. 11, a portion of the disk 11 located on the side of the supply section 4 facing the supply section 4, in other words, a pair of disks 11.11 on which a return gutter 16 is provided.
The disk 11.11 is only one closer to the supply section 4 than between 11 and 11.
It is configured so that it can be returned to time.

In addition, reference numerals 17 and 18 refer to each return gutter 16 as the steel part 2 of the sorting barrel.
c or a stay supported against the brown rice receiving trough 13.

The crushed rice that has been taxed and weighed 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 supplied from the mixed rice thrower into the sorting cell 2 from a supply section 4 on one side plate 2a or the like.

The mixed rice thus supplied into the sorting cell 2 is lifted up to a certain height between the rotating disk 11 and the rotating disk 11, as shown by the dashed-dotted arrow in FIG. 1, and then flows to fall. It is transferred toward the discharge section 5 while forming a flow NA.

Then, the brown rice in the mixed rice is fitted into the recess 12 of each disk 11 and lifted up to a high position, and then
2, the brown rice is sorted to fall into the brown rice receiving channel 13.

During this flow, the mixed rice that falls on the front side of the brown rice receiving trough 13 falls onto the upper surface of the return trough 16, slides on the return trough 16, and flows from near its lower end to the disk near the supply section 4. 11 to the front surface facing the supply section 4.

Therefore, this returned mixed rice can be subjected to the sorting action again by the rotation of the pair of disks 11° 11 in the fluidized bed A at the returned position, so that if it does not return and flows to the discharge section side, In comparison, the sorting ability of the sorting device can be greatly improved.

Note that the lower surface of the flow plate portion 16b in each return gutter 16 is connected to one disk 11 of the pair of disks 11.11.
When the rotating surface is inclined toward the rotating surface having the recess 12, the upper surface of the fluidized bed A that rises upward is rebounded by the horizontally inclined lower surface of the original plate portion 16b, and moves in the direction of the recess 12. It has the effect of giving force and making it easier for the brown rice to fit into the recess.

Further, each of the donut-shaped disks 11 has a recess]2
The rotating surface on which the rotating shaft 10 is formed may have a shape that is not perpendicular to the axis of the rotating shaft 10 but is inclined.

Furthermore, a part of the mixed rice lifted by the return gutter 16 is returned between the disks one step closer to the supply section, so if the return gutter 16 is arranged between all the disks 11, the fluidized layer A between each disk This makes it possible to improve the extent to which the thickness gradually decreases toward the discharge section.

Further, the return gutter in the present invention may be provided between a pair or multiple pairs of disks close to the supply section.

[Brief explanation of the drawing]

The drawings show embodiments of the invention, and FIG.
A longitudinal sectional front view of the sorting device as shown in FIG.
N wedge sectional view, Figure 3 is an enlarged sectional view taken along the line - m in Figure 1, Figure 4 is an enlarged plan view of the main part of the disk, and Figure 5 is the V in Figure 4.
-V wedge sectional view; FIG. 6 is the same sectional view as viewed from -vr in FIG. 4; 2... Sorting cell, 2a, 2b... Left and right side plates,
2C...body of sorting cell, 4...supply section, 5...
...Discharge part, 10... Rotating shaft, 11... Disk, 12... Concavity, 13... Brown rice catcher, 16
...Return gutter, 16a...Lip part, 1.6b
...Original plate part, 17°18... Stay. Patent Applicant: Seirei Kogyo Co., Ltd. Written Amendment (Method) January 30, 1985 1. Case Indication Special Section No. 61-243891 2. Title of Invention: Disc Rotary Grain Sorting Device 3. Amended. patent case and steel thread patent - person's address (
b) Okayama Yamaenami 428 name
(516) Seirei Kogyo Co., Ltd. 4, Agent Address ■530 2-1-21 Ogamibashi Kita, Kita-ku, Osaka January 7, 1988 (Delivery date 1)
27th) Submit the drawings as attached.

Claims (1)

[Claims] (1) A rotating shaft is arranged approximately horizontally in the body of the sorting cell, and a plurality of donut-shaped disks each having a large number of recesses formed on the surface thereof are provided at appropriate intervals on the rotating shaft. , the sorting cell is provided with a supply section for a mixed rice of paddy and brown rice at one end thereof, a discharge section for paddy at the other end thereof, and a brown rice receiving trough is arranged between each disk. In the disk rotating grain sorting device, a return gutter is provided between any pair of adjacent disks, and the mixed rice that is lifted by the rotation of both disks and falls to the front side of the brown rice receiving gutter, A disk rotating type grain sorting device characterized in that, of a pair of disks sandwiching a return gutter, the grain sorting device is configured to return the grain to a location facing the supply section on the disk located on the supply section side.