JPS63116790A - Disk rotation 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] [Industrial Application Field] The present invention is designed to sort brown rice from mixed rice after hulling by rotating a plurality of disks each having a large number of recesses on the surface. The present invention relates to a grain sorting device.

[Conventional technology]

In the sorting cell, a rotating shaft is supported in a substantially horizontal manner, and a plurality of donut-shaped disks each having a plurality 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. 136688/1983 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]

By the way, in this type of grain sorting device, the size and shape of the recesses formed on the surface of each disk are determined depending on the type of grain such as brown rice, etc. so that the grains fit into it exactly. Therefore, if dirt accumulates in each recess, it becomes difficult for grains to fit into the recesses, and the sorting ability is extremely reduced.

In addition, if grains such as brown rice that are stuck in a recess are rotated together with the disk without being pulled out from the recess, the result is the same as a decrease in the number of effective recesses in the disk. This also reduces the sorting ability.

Furthermore, during long-time sorting operations, static electricity may build up on the disc due to friction between the disc and the grains, and this static electricity can cause rice husks and trash to get stuck in the recesses. However, there was a problem that deteriorated the sorting performance.

The present invention aims to solve this problem.

[Means to solve the problem]

In order to achieve this object, the present invention provides a rotating shaft disposed substantially horizontally in a sorting cell, a plurality of disks each having a plurality of recesses formed on the surface thereof at appropriate intervals, and In a disk rotary grain sorting device, each cell is provided with a supply section for a mixed rice of paddy and brown rice, and a discharge section for paddy, and a brown rice receiving trough is arranged between each disk. A brush body is provided between the discs for sliding contact with the recessed surface of the disc.

[Action/effect of the invention]

In this way, in the present invention, since the brush body is brought into sliding contact with the surface of the disc disposed in the sorting cell, which has a recess, the static electricity charged on the disc surface can be eliminated regardless of where the brush body is installed. Can be removed.

When the brush body is placed above the brown rice receiving gutter, the bristles of the brush body forcibly scrape off the brown rice stuck in the recess, ensuring that the brown rice is received in the brown rice receiving gutter. In addition, the brown rice that is stuck in the recess does not return to the fluidized bed again, and the sorting ability can be greatly improved.

Furthermore, since the bristles of the brush body slide into the recesses after the brown rice has been scraped off, it is possible to remove dirt within the recesses, and it is also possible to clean the recesses during the sorting operation using the disc.

A brush body is disposed above the side where the mixed rice is lifted by the disk, and the brush body is configured so that the posture in which the bristles of the brush body slide against the surface of the disk can be changed, so that the bristles lightly touch the surface of the disk. When the bristles of the brush body are brought into sliding contact, or in other words, when the bristles of the brush body are tilted so as to follow the direction of rotation of the disc, it is possible to scrape off the paddy that fits incompletely into the recess and bring the paddy into the brown rice catcher. On the contrary, when the tips of the bristles strongly slide against the surface of the disk, in other words, when the tips of the bristles of the brush body are oriented to face the rotation of the disk, the tips of the bristles of the brush body are thoroughly distributed inside the recesses, and the concavities are completely covered. The cleaning of the place will be ensured.

As described above, according to the present invention, the brush body that comes into sliding contact with the surface of the disk can greatly improve the sorting performance by removing the static electricity charged on the disk, cleaning the recesses, and scraping off brown rice. It has a remarkable 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 desiliconization in the hulling section (not shown). The mixed rice that has been sorted into rice husks and a mixed bed is sorted into brown rice and paddy by a disk 11 arranged horizontally in the body 2c of the sorting cell 2, and at least the sorting cell 2 The lower half of the body part 2c is formed into a substantially cylindrical shape, and the sorting cell 2 has a supply part 4 on the upper part of the body part 2c at a position closer to the negative side opening 2a, and a discharge part 5 on the other side plate 2b. The other side plate 2b is removably attached to the body 2c of the sorting cell via bolts 14 or the like.

Reference numeral 3 designates an integral cover with a downward U-shaped cross section that covers the upper surface of the disk 11 and the sorting cell 2, and is attached to the body 2C of the sorting cell 2 or its outer plate 202, etc. around an axis parallel to the axis of the rotating shaft 10, which will be described later. One side edge of the cover body 3 is fixed to a hinge 21 that can be rotated, and the lower end of the other side edge of the cover body 3 can be locked with a locking hook 22 while in contact with the upper end of the outer plate 20b. be.

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 refluxing into the supply hofbar.

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

Inside the sorting cell 2, a rotating shaft 10 that is rotationally driven at an appropriate speed by the morph is supported on the left and right side plates 2a and 2b parallel to the axis of the sorting cell 2. Alternatively, a plurality of donut-shaped disks 11 are provided at appropriate intervals in the axial direction, each having a large number of recesses 12 carved on both sides with dimensions such that brown rice can fit into them, but paddy cannot fit into them. , the drawing shows recesses 1 on both sides of the disk 11.
2 is engraved).

Each of the disks 11 is fitted into the center hole of its boss portion 11a so as to rotate integrally with the rotating shaft 10, which has a rectangular cross-section or is spline-molded, and the length of each boss portion 11a is the same as that of the adjacent disk. 11 are set apart by a predetermined interval, and the nuts 16 are set on the inner side of the other side plate 2a.
By tightening the nut 16 and removing the nut 16, each disk 11 can be attached and detached in the axial direction of the rotating shaft 10. Note that a plurality of disks 11 may be fixed to the longitudinal boss portion 1.12.

In these cases, the free end of the rotating shaft 10 may be supported by two auxiliary bearings 17 on the other side plate 2b, or the other side plate 2b may be formed into two halves vertically or horizontally. Furthermore, the free end of the rotating shaft 10 may not be supported by the other side plate 2b.

Note that each of the multiple recesses 12 in each disk 11
is a semicircular shape in which the circumferential length of the disk 11 is larger than the radial width S of the disk 11, as shown in FIGS. 3 to 5. 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 surface 12a located on the front side with respect to the disk rotation direction
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 dimension of brown rice. , each of the above-mentioned holes is set to an intermediate length between the length of brown rice and the length of unhulled rice, and the recess 12
The depth T is set to be approximately equal to the diameter of brown rice.

The dimensions of the recess 12 in the disk 11 to be replaced can be set to suitably correspond to the size and type of grain.

A brown rice catcher 13a is provided between the disks 11 and between the disks 11 and the side plates 2a and 2b of the sorting cell 2.
, 13b are inserted in an inclined manner, the upper end of each brown rice receiving channel faces the side where the brown rice is lifted by the disk 11, and the lower end of each brown rice receiving channel 13a, 13b is inserted into a brown rice take-out shoe)1.
5 communicates with the brown rice sorting section (not shown).

The brown rice receiving gutter 13a arranged between these brown rice receiving gutter 13b and each disk 11 has a lower end portion near each disk 11.
It is fixed to the inner surface of the integrated cover 3 via a bracket plate 18 extending outward from the outer periphery of the cover.

At this time, only the brown rice receiving troughs 13b on the inner surfaces of the side plates 2a and 2b of the sorting cell 2 may be fixed to each side plate.

Reference numeral 19.19 denotes a brush body arranged to extend in the radial direction above the brown rice receiving trough 13 between each disk 11 so that the bristles of the brush come into sliding contact with the recesses 12 on the surface of each disk. In the embodiment shown in FIG. 1, each brush body 19 is formed into a cylindrical shape, that is, the brush bristles 19b are implanted so as to extend radially from the shaft member 19a, and the brush bodies 19 are implanted so as to extend radially from the shaft member 19a. The bearing plate 23 is rotatably mounted on the bearing plate 23.

Moreover, a plurality of rows of brush bodies 19 are arranged on the same surface of the disk at front and rear positions in the rotation direction thereof, and the shaft member 19a of each brush body 19 is forcibly driven to rotate in the opposite direction to the rotation direction of the disk by the motor 24. be.

The grained rice that has been desiliconized 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 above a position close to one side plate 2a.

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 dashed line arrow A in FIG. The liquid is transported toward the discharge section 5 while forming a fluidized bed.

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 into the brown rice receiving channels 13a and 13b.

Since the brush body 19 disposed between each disc 11 is in sliding contact with the surface of each disc, it is possible to remove static electricity generated by sliding contact between the mixed rice and the disc, and the brush body 19 is directed in the direction opposite to the rotating direction of the disc 11. The bristles of the brush body 19, which is driven to rotate, can flick out or sweep out the brown rice stuck in the recess 12, and while it is stuck in the recess 12, it passes downward through 13 brown rice receiving troughs and is brought into the fluidized bed A. Therefore, the sorting performance can be improved.

In addition, when a plurality of rows of brush bodies 19 are arranged at front and rear positions in the rotational direction of the disk 11, brown rice is sown by the brush body 19 at the front position in the rotation direction of the disk, and then the brush body 19 at the rear position The bottom surface 12 of the recess 12 is now empty.
It is also possible to clean up to c.

Note that by turning off the motor 24 or making the brush body 19 freely rotatable without attaching the motor 24, the bristles of the brush body can rotate together with the rotation of the disc 11 only by the friction of contacting the bristles with the surface of the disc. When configured to When the brush body 19 freely rotates in accordance with the circumferential speed of the portion near the inner circumference of the disk where the speed is small, the bristles of the brush body 19 rotate in the direction opposite to the direction of rotation of the disk 11 at the portion near the outer circumference of the disk. Same result, recess 1
It has the effect of scraping off the brown rice inside 2 and cleaning the inside of the recess 12.

When replacing the disk 11 or cleaning the inside of the sorting cell 2, remove the locking hook 22 and flip up the cover 3, and the brown rice receiving channel 13a attached to the inner surface of the cover 3
, 13b and the brush body 19 can also be flipped up to be positioned outside the outer periphery of the disk 11, and then,
When removing the side plate 2b, one end of the rotating shaft 10 is attached to the bearing 1.
7, the 17 bearings are also disassembled), then the NAND 16 is loosened and the disks 11 are pulled out one by one.As a result, the inside of the sorting cell 2 becomes large and the internal cleaning work becomes easier. It's easy to do.

FIG. 6 shows another embodiment, in which the shaft member 25 of the brush body 25
The bristles 25b are planted in substantially opposite directions on both the left and right sides of the brush body 25, and one brush body 25 can cover the disks 11 on both the left and right sides.
(See Figure 7).

In this case, the brush body 25 may be forcibly rotated by the motor 26 to scrape off the brown rice in the recess 12, or it may be a fixed type that does not rotate.

Further, as shown by the dashed line in FIG. 6, if the brush body 27 is disposed below the brown rice receiving channel 13, it is possible to clean the empty recess 12 after the brown rice has fallen into the brown rice receiving channel and to prevent static electricity on the disk. can be removed at the same time.

Further, as shown in FIG. 8, the brush body 28 is disposed at a stop position on the side where the disk 11 lifts the brown rice, and the brush body 28 is placed in an inclined position so that the tips of the bristles 28a are oriented substantially along the rotational direction of the disk. If the brush body 28 is configured to be able to change its position between the position shown by the solid line in FIG. It is possible to improve the sorting accuracy by scraping off the stuck paddy and preventing the paddy from being brought into the brown rice receiving trough 13. On the other hand, if the disk is held in the position shown by the dashed-dotted line during idle operation, the recess 12 can be scraped off. You can do a lot of cleaning.

Incidentally, reference numeral 29 denotes a rectifying plate that prevents the upper surface of the fluidized bed A from being raised significantly and also regulates the flow of the fluidized bed A.

It goes without saying that the present invention can also be applied to a disk having a conical cross section, such as an umbrella shape.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a vertical front view of the sorting device, FIG. 2 is a sectional view taken along the nn plane of FIG. The figure is TV-TV in Figure 3.
5 is a sectional view taken along the line ■-V in FIG. 3; FIG. 6 is a sectional view of another embodiment; FIG. 7 is an enlarged sectional view of main parts viewed from FIG. 8 is an enlarged cross-sectional view of the main part taken along the line 1--2 in FIG. 6. 2... Sorting cell, 2a, 2b... Left and right side plates,
2C...Body of sorting cell, 3...Cover integrated, 4
... Supply section, 5 ... Discharge section, 10 ... Rotating shaft, 11 ... Disc, lla ... Boss section, 1
2... Concavity, 13a, 13b... Brown rice catcher, 1
7...Bearing, 18...Bracket plate, 19.2
5.27.28...Brush body, 20a, 20b...
... Outer plate, 21 ... Hinge, 23 ... Bearing plate, 2
4.26...Motor.

Claims (3)

[Claims] (1) A plurality of discs each having a large number of recesses molded on the surface thereof are provided at appropriate intervals on a rotating shaft arranged approximately horizontally in the sorting cell, while the sorting cell In a disc rotary grain sorting device comprising a supply part for mixed rice and a discharge part for paddy, and a brown rice receiving trough between each disc, there is a part between the discs. 1. A disk rotating grain sorting device, characterized in that a brush body is provided in sliding contact with a surface having a recess. (2) The disk rotary grain sorting device according to claim 1, wherein the brush body is disposed above a brown rice receiving trough. (3) A brush body is disposed above the mixed rice lifting side of each disk, and the posture in which the bristles of the brush body slide against the disk surface can be changed. The disk rotary grain sorting device according to scope 1.