JPS63197588A - 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] [Industrial Application Field] The present invention is a method for converting brown rice from mixed rice after hulling by rotating a plurality of disc-shaped or donut-shaped discs each having a large number of recesses on the surface. The present invention relates to the structure of a grain sorting device for sorting grains.

[Conventional technology]

A rotating shaft is supported in the sorting cell in a substantially horizontal manner, and a plurality of disk-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 consisting of
This is proposed by the publication No.-136688.

[Problem that the invention seeks to solve]

The disk rotary grain sorting device has a flow system in which the mixed rice fed into the sorting cell from the supply section at one end is raised to a height formed by the rotation of the disks and then falls down in the area between the disks. When the process is repeated, the brown rice in the fluidized bed fits into the recess in the disk and falls from a high position, so that the brown rice falling from a high position is received by the brown rice receiving gutter and taken out. .

Then, the mixed rice flows from the supply section to the discharge section through the gap between the bottom of the sorting cell and the outer circumferential surface of each disk, and the brown rice in the mixed rice in the fluidized bed is transferred to each disk one after another. is taken out.

However, in the prior art, the outer circumferential surface of each disk and the bottom surface of the sorting cell facing this outer circumferential surface are both flat surfaces with no unevenness, so the mixed rice near the bottom of the sorting cell in the fluidized bed is not stirred much. Therefore, the probability that brown rice in each fluidized bed encounters the recess of the disk decreases, and the probability that brown rice leaves the discharge section without being taken out by the disk increases, resulting in a problem that sorting accuracy cannot be improved. Ta.

The present invention aims to solve this problem.

[Means to solve the problem]

In order to achieve this object, the present invention includes a support shaft arranged approximately horizontally in the body of the sorting cell, and a disk-shaped or donut-shaped disk having a large number of recesses formed on the surface of the support shaft. A plurality of disks are 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, and between each disk. In a disk rotary grain sorting device comprising a brown rice receiving trough, each disk has teeth formed on its outer peripheral surface, a drive shaft is provided in the sorting cell, and a drive gear attached to the drive shaft. is configured to mesh with teeth on each of the disks or some of the disks to rotate each disk.

[Action/effect of the invention]

In this way, in the present invention, teeth are formed on the outer circumferential surface of each of the plurality of disks provided on the support shaft disposed approximately horizontally, so that even if the bottom of the sorting cell is a flat surface with no unevenness, The mixed rice moves through the gap between the bottom of the sorting cell and the outer circumferential surface of the disk and flows from the supply section to the discharge section.
The unevenness of the teeth on the outer peripheral surface of the disks agitates the brown rice in the fluidized bed, increasing the probability that it will face the recesses of each disk, improving sorting accuracy.

If these multiple disks are integrally connected to the boss and supported by the support shaft, all the disks can rotate as one, so the teeth on the outer circumferential surface of one disk and the drive shaft All disks can be rotated by meshing with gears.

In addition, by meshing drive gears with the teeth on the outer circumferential surface of all the disks, all the disks can be rotated integrally, and each drive gear meshing with the diameter of each disk and the teeth on its outer circumference If the diameters of the gears are made different and each disk is rotatably supported on a support shaft, the rotational speed of each disk can be set arbitrarily.

As described above, according to the present invention, by forming teeth on the outer periphery of each disk, the stirring action of the mixed rice in the fluidized bed is increased, and the probability that brown rice will fit into the recesses in each disk is increased, making it easier to sort rice. This has the advantage that not only accuracy is improved, but also the teeth can be used to rotate the disk.

〔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.The disc rotary sorting device 1 winds the hulled rice after tax culling 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 of the sorting cell 2, and the sorting cell 2 includes: A supply section 4 is provided on the negative side plate 2a, and a discharge section 5 is provided on the other side plate 2b.

Further, a mixed rice thrower from the wind sorting section is connected to the homper 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 pumper.

Further, a residual rice discharge valve (not shown) is provided on the bottom surface 2C of the body of the sorting cell 2 so as to be openable and closable.

Inside the sorting cell 2, a support shaft 10 is rotatably supported in a substantially horizontal manner parallel to the axis of the sorting cell 2 on the left and right side plates 'la, 'lb. A donut-shaped disk 1 with a large number of recesses 12 carved on both sides so that brown rice can fit into it but paddy cannot fit into it.
A plurality of discs 1 are provided at appropriate intervals in the axial direction (however, the drawing shows a case where recesses 12 are carved on both sides of the disc 110).

On the outer circumferential surface of each disk 11, teeth 13 parallel to the support shaft 10 or in the form of helical teeth are formed throughout the collection, while at appropriate locations within the sorting cell 2, for example on the upper end side of the disk, support shafts 13 are formed. 10, a drive shaft 14 is rotatably supported, and a drive gear 15 attached to the drive shaft 14 is meshed with the teeth 13 on each disk 11, and the drive shaft 14 is connected to a belt wheel 16 from a motor outside the sorting cell 2. All the disks 11 are rotated at an appropriate speed through
It rotates all at once.

Note that each of the multiple recesses 12 in each disk 11
As shown in FIGS. 3 to 5, 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 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. and oysters, each of the above-mentioned grains is set to an intermediate length between the length of brown rice and the length of paddy, and the recess 12
The depth T is set to be approximately equal to the diameter of brown rice.

Moreover, the upper part between each disk 11, and the disk 11
A brown rice receiving gutter 17 is inserted in an inclined manner in the upper part between the side plates 2a and 2b of the sorting cell 2, and each brown rice receiving gutter 1
The lower end of the brown rice removal chute 18 communicates with a brown rice sorting section (not shown).

Reference numeral 19 denotes a current plate that presses or straightens the upper surface of the fluidized bed, and each current plate 19 is arranged in an inclined manner between the disks 11.degree.

With this configuration, the husked 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 fed into the sorting cell 2 from a feed section 4 on one side plate 2a of the rice thrower.

The mixed rice thus supplied into the sorting cell 2 is transferred between the rotating disk 11 via the driving gear 15 and the teeth 13 on the outer peripheral surface of each disk, as shown by the dashed line arrow in FIG. After being lifted up to a certain height, the liquid is transported toward the discharge section 5 while forming a fluidized bed A that flows so as to fall.

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 17.

During this flow, when the teeth 13 formed on the outer peripheral surface of each disk 11 pass through 20 locations on the bottom surface of the sorting cell 2,
The unevenness of the teeth 13 allows the fluidized bed A to be well stirred, and the brown rice in the fluidized bed faces the recesses 12 of each disk 11 more frequently, improving the sorting accuracy.

In addition, the shape of the teeth 13 on the outer circumferential surface of each disk is such that, as shown in FIG. If the helical teeth are formed on the 5 side as described in the afterword, when the mixed rice moves from the supply section 4 side toward the discharge section 5 side along the bottom surface 2C of the sorting cell, the teeth 13 The unevenness becomes a guide,
Forced migration can be facilitated.

In another embodiment, the boss portion is made common so that all the disks 11 rotate integrally with respect to the support shaft 10,
The drive gear 15 may be configured to mesh with only one arbitrary disk 11.

In addition, as another embodiment of the present invention, as shown in FIG. 7, each of the donut-shaped disks 11 may be individually rotatable with respect to the support shaft 10. l! ! The inner diameters of the disks 11 are all the same, while the outer diameters of the disks 11 are set to the disk 1 closest to the supply section 4 side.
The outer diameter of the disk 11 is large (as the outer diameter of the disk 11 at that position becomes smaller as it approaches the discharge section 5), and teeth 13' are formed on the outer periphery of each disk 11. Drive gears 15' having different diameters are fixed to a horizontal drive shaft 14' so as to mesh with the drive gears 13'.

Then, the lower half of the body in the sorting cell 2 is placed on the disk l.
The height position on the supply part 4 side is low, and the height position is gradually higher as it goes to the discharge part 5 side, so that it is formed in an inclined shape so as to roughly follow the outer diameter of l (see Fig. 7). ).

According to this configuration, the presence of teeth on the outer circumferential surface of each disk promotes the movement of the mixed rice toward the discharge section 5 side on the bottom surface 2C of the sorting cell 2 and the stirring of the fluidized bed A, as in the embodiment described above. Since the outer diameter of the disk near the supply section 4 is large, the number of recesses 12 formed on its surface will inevitably be large, and this will result in a large number of concavities 12 formed on the surface. A large amount of brown rice can be scooped up efficiently.

On the other hand, since the outer diameter of the disk is formed so that it becomes smaller as it goes toward the discharge section, the sorting capacity of the disk at various locations in the longitudinal direction of the sorting cell and on the discharge section side is determined by This means that the setting can be made in accordance with the contamination rate, making it possible to stabilize the sorting performance at each location.

In addition, the inner diameter of each disk is the same, and the height from the lower half of the bottom of the body of the sorting cell to the inner diameter edge of the disk is sloped so that it is low on the supply section side and gradually increases toward the discharge section side. Therefore, even if the thickness of the fluidized bed A between each disc becomes thinner as it goes toward the discharge section, this change can be canceled out, and the fluidized bed at any point in the sorting cell will not reach the inner diameter edge of each disc. It becomes easier for the mixed rice to flow in the direction of the next disk from the hole on the inner diameter side, shortening the residence time of the mixed rice in the sorting cell and preventing the contact time between the disk and the mixed rice during the sorting operation from being longer than necessary. First, damage to brown rice, etc. can be reduced.

Furthermore, even if the rotation speed of the drive shaft 14 is constant, the rotation speed of the disks 11 in the four supply sections can be slowed down and the rotation speed of the disks in the five discharge sections can be increased. The rotational speed of each disk 11 is set to an optimal state so that the probability that brown rice fits into the recess 12 of each disk 11 is maximized according to the difference in the thickness of the fluidized bed A at each position. You can also do it.

As another embodiment, the drive shaft 14' is not parallel to the support shaft lO, but is arranged in an inclined manner so that it is separated from the supply part 4 side and approaches the discharge part 5 side, and the drive shaft 14' is attached to the drive shaft 14'. gear 1
The diameter of the drive gear 15' and the teeth 13' on the outer peripheral surface of each disk 11 are formed in the shape of a bevel gear. Alternatively, contrary to the above, the drive shaft 1
The drive gear 1 is arranged in an inclined manner so that 4 approaches the supply section 4 side and separates from the discharge section 5011J, and is attached to the drive shaft 14.
The diameter of the drive gear 15' is gradually increased from the supply section 4 side to the discharge section 5 side, and one or both of the drive gear 15' and the teeth 13' on the outer peripheral surface of each disk 11 are formed into a bevel gear shape. You can also do that.

The drive shaft 14 or 14' and the drive gear 15, 15' are
The drive gear may be provided not at the upper end of the disk 11 but at an upper position or lower position on the side closer to the brown rice receiving trough 17, and at a location below the brown rice receiving trough 17 where the fluidized bed A is not formed. By arranging the disk, brown rice or rice grains will not get caught in the meshing portion of the disc with the gear, so the inconvenience of crushing brown rice or rice grains will be eliminated. Further, it goes without saying that the disk 11 may be disk-shaped.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of the sorting device, FIG. 2 is a cross-sectional view taken along the line II-III of FIG. is IV-IV in Figure 3.
FIG. 5 is a cross-sectional view taken along the line -V in FIG. 3; FIG. 6 is a cross-sectional view taken along the line Vl--Vll in FIG. 1; and FIG. 7 is a cross-sectional view of another embodiment. 1... Disk rotary sorting device, 2... Sorting cell, 2a, 2b... Left and right side plates, 2c...
Sorting cell body, 4... supply section, 5... discharge section, IO... support shaft, 11... disk, 12...
...Recess, 13.13'...Teeth, 14.14'.
... Drive shaft, 15.15' ... Drive gear, 17.
...Brown rice catcher. Patent applicant Seirei Kogyo Co., Ltd. Figure 7

Claims (1)

[Claims] (1) A support shaft is disposed approximately horizontally in the body of the sorting cell, and a plurality of disk-shaped or donut-shaped disks each having a large number of recesses formed on the surface thereof are arranged at appropriate intervals on the support shaft. On the other hand, the sorting cell is provided with a feeding section for a mixture of paddy and brown rice at one end thereof, a discharging section for paddy at the other end, and a brown rice receiving trough between each disk. In the disk rotary grain sorting device, teeth are formed on the outer peripheral surface of each of the disks, a drive shaft is provided in the sorting cell, and a drive gear attached to the drive shaft is connected to each of the disks or one of the disks. 1. A disk rotating grain sorting device characterized in that the disks are configured to rotate by meshing with teeth on the disks.