JPS63116787A - 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] [Field of Industrial Application] The present invention is a method for sorting 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 paddy of the mixed rice in the fluidized bed between each disk is not received by the brown rice receiving trough between each disk, but is quickly transferred to the paddy discharge section. It is desirable to send the waste through the discharge section to a culminating mechanism to undergo a culminating action.

However, if the paddy that has been lifted by the rotation of each disk falls again into the fluidized bed between the disks, there will be a chance that the paddy will be lifted again in the recess of the same disk, and the paddy cannot be quickly moved to the discharge section side. Moreover, it also prevents brown rice from fitting into the recesses on the surface of each disk. This phenomenon becomes more pronounced between the disks near the discharge section where the rate of paddy contamination in the mixed rice is high, resulting in a problem in that the sorting ability is also reduced.

The present invention aims to solve this problem.

[Means to solve the problem]

In order to achieve this object, the present invention includes a rotating shaft arranged approximately horizontally in the body of the sorting cell, and a donut-shaped disk having a large number of recesses formed on the surface thereof, 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 the disk rotary grain sorting device provided with a gutter, an auxiliary sorting gutter is arranged in an inclined manner between any pair of adjacent disks located on the side near the paddy discharge part, and The paddy that is lifted by the rotation of both disks and falls toward the front side of the brown rice receiving gutter is supplied to a portion of the disc located on the ejecting portion side of the pair of disks sandwiching the auxiliary sorting gutter, facing the ejecting portion. It is configured as follows.

[Action/effect of the invention]

In this way, in the present invention, the fluidized bed of mixed rice between a pair of donut-shaped discs facing each other is lifted upward by the rotation of the discs, and only the brown rice enters the brown rice receiving channel. Normally, the paddy that does not enter the receiving gutter falls down and gets mixed into the fluidized bed below, but according to the present invention, the auxiliary sorting gutter is arranged in an inclined manner between the pair of disks. The paddy that has been lifted up by the side disc and falls before the brown rice receiving trough is received by the auxiliary sorting trough.

Moreover, the auxiliary sorting gutter is configured so that the paddy on the auxiliary sorting stack is supplied to a place between a pair of disks that is one place closer to the discharge section than between the disks where the gutter is installed. , - Once lifted by the disks, the paddy is rapidly forwarded toward the discharge section without returning to the place between the same pair of disks, so that there is no chance of brown rice fitting into the recesses in each disk ( Become.

Since the auxiliary sorting gutter is arranged between any pair of disks located close to the discharge section where the rate of paddy contamination is high, the paddy can be quickly transported toward the discharge section, which in turn improves sorting efficiency. This has the effect of significantly improving the performance.

〔Example〕

The drawings of an embodiment in which the present invention is applied to a grain sorting mechanism in a paddy TG sorting machine will be explained below.The disk rotary sorting device 1 winds the hulled rice after dehulling 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 part 4 is on the - side plate 2a, and the supply part 4 is on the other side plate 2a.
A discharge portion 5 is provided in each portion b.

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, a residual rice discharge valve 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, which is rotated at an appropriate speed by a motor, is supported substantially horizontally on both left and right side plates 2a and 'lb parallel to the axis of the sorting cell 2. 10 is provided with a plurality of donut-shaped disks 11 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 it but paddy cannot fit into it. (However, the drawing shows a case where recesses 12 are carved on both sides of the disk 11).

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 the brown rice and larger than the width dimension of the 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.

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).

In the embodiment shown in FIG. 2, between the plurality of pairs of dona-notch disks 11 degrees 11 at positions close to the supply section 4,
Flow Jii of the mixed rice formed between the respective discs 11
A return gutter 19 is arranged at an angle between the upper surface of A and the lower surface of each brown rice receiving gutter 13, on the side where the disk 11 lifts up the mixed rice, while a plurality of pairs of donut-shaped gutters are disposed at a position close to the discharge section 5. Auxiliary sorters 16 are provided in an inclined manner between the disks 11, 11 at substantially the same positions as the return gutter 19.

Each of the auxiliary sorting machines 16 has its upper end located on the outer peripheral band of the disk on the mixed rice lifting side by the disk 11, and the lower end of the auxiliary sorting machine 16 extends radially inward from the inner diameter edge 11a of the disk 11, and each of the auxiliary sorting machines A cross section of machine 16,
As shown in FIG. 2, a vertical lip portion 16a extending approximately along the rotating surface of the disk 11 on the supplying section side is formed into an original plate section 16b whose upper surface is inclined diagonally downward toward the supplying section 4 side. , formed in an abbreviated form.

Then, by the rotation of both disks 11 and 11 on the left and right sides of each auxiliary sorting machine 16, the brown rice receiving trough 13 is lifted up.
The paddy falling closer to the front side is separated from the portion of the disk 11 located on the side of the discharge section 5 of the pair of adjacent disks 11 that faces the discharge section 5, in other words, the portion of the disk 11 facing the discharge section 5 where the auxiliary sorter 16 is disposed. The structure is such that the paddy is supplied between the disks 11.11 which are only one closer to the discharge section 5 than between the disks 11.11.

Reference numerals 17 and 18 indicate stays for supporting each of the auxiliary sorting machines 16 with respect to the body portion 2c of the sorting barrel or the brown rice receiving trough 13.

On the other hand, each return gutter 19 is arranged at an incline in substantially the same way as the auxiliary sorter 16, and the upper end of each return gutter 19 is located on the disk outer circumference band on the side of the mixed rice lifting side by the disk 11. 19 to the inner diameter edge 1 of the disk 11.
1a in the radial inward direction, and furthermore, the cross section of each return gutter 19 is shown in the second section, and the disk 1 is
A vertical lip portion 19a extending approximately along the rotating surface of No. 1 is formed in an abbreviated shape so that the upper surface becomes an original plate portion 19b that is inclined diagonally downward toward the supply portion 4 side. 1
The mixed rice 1 that is lifted up by the rotation of both the disks 11 and 11 on the left and right sides of the brown rice receiving trough 13 and falls to the front side from the brown rice receiving trough 13 is transferred to the feeding section 4 of the pair of adjacent disks 11.
The portion of the disk 11 located on the side that faces the supply section 4, in other words, between the pair of disks 11.11 where the return gutter 19 is arranged, the return gutter 19 is placed between the disks 11.11 that are only one closer to the supply section 4. It consists of:

Reference numerals 20 and 21 are stays for supporting the return gutter 19 to the brown rice receiving gutter 13, etc.

The culled rice that has been deculled 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 dotted chain arrow in FIG. The liquid is transported toward the discharge section 5 while forming a fluidized bed A.

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 gutter 13 between the disks 11 at a position close to the supply section 4 where the mixing rate of brown rice is high falls onto the upper surface of the return gutter 19, and the mixed rice falls onto the upper surface of the return gutter 19. 19 and from near the lower end of the supply section 4.
is returned to the front surface of the disk 11 facing the supply section 4 on the side closer to the disk 11 .

Therefore, this returned mixed rice is transferred to the fluidized bed by rotating the pair of discs 11° in the fluidized HA at the returned position and scooping up the brown rice in the recesses on the disc surface at that location. This makes it possible to subject a portion of the liquid to a redundant sorting action, and the sorting ability of the sorting device can be greatly improved compared to the case where the waste flows to the discharge section without returning to the supply section.

Note that the lower surface of the original plate portion 19b in each return gutter 19 is connected to one disk 11 of the pair of disks 11.11.
When the fluidized bed A is tilted toward the rotating surface having the recess 12, the upper surface of the fluidized bed A that is lifted upward is rebounded by the horizontally inclined lower surface of the original plate portion 19b, and a component force is applied to move the fluidized bed in the direction of the recess 12. This has the effect of making it easier for brown rice to fit into the recess.

On the other hand, on the auxiliary sorting gutter 16 disposed between the disks 1 at a position close to the discharge section 5, the paddy that has been lifted by the rotation of the pair of disks 11 and has fallen to the front side of the brown rice receiving gutter 13 is received. This paddy is heated through the flow plate section 16b of the auxiliary sorting gutter 16 and is supplied between the disk 11 on the side closer to the discharge section 5 from the vicinity of its lower end.

As a result, the paddy that has been lifted can be quickly transported to the fluidized bed on the side of the discharge section 5 without falling onto the fluidized bed A at the same position, and can be quickly returned from the discharge section 5 to the hulling section. As a result, the rice remains in the sorting cell 2 near the discharge part 5 for a long time, so that the brown rice to be sorted by the disc 11 at that location does not have a chance to fit into the recess 12, and the sorting ability is improved. It is possible.

In the second embodiment shown in FIG. 7, the return gutter 19 is not provided at a position close to the supply section 4, and three donut-shaped disks 11, such as four, are disposed near the discharge section 5. In the case where the auxiliary sorting gutter 16 is provided, this embodiment can also quickly send out the paddy that obstructs the sorting action to the discharge section 5, as in the case described above, and maximize the sorting capacity of the sorting device. It is possible to make the most of it.

In the third embodiment shown in FIG. 8, a return gutter 19 is provided between a plurality of disks 11, such as three disks near the supply section 4, and two disks at an intermediate position between the supply section 4 and the discharge section 5. In this case, neither the auxiliary sorting gutter 16 nor the return gutter 19 is provided between the disks 11 of The embodiment is similar to the first embodiment shown in FIG. 2, in which the mixed rice is returned by the return gutter 19 on the supply section 4 side, which is a location where the brown rice contamination rate is high, and the rice is subjected to the redundant sorting action by the same disk. On the other hand, in the discharge section 5 where the rate of paddy contamination is high, the sorting ability of the device can be greatly improved by quickly discharging the paddy.

In the fourth embodiment shown in FIG. 9, a plurality of auxiliary sorting troughs 16 are arranged close to the supply section 4, and then a plurality of return troughs 19 are arranged one or more spaces apart, and furthermore, a plurality of return troughs 19 are arranged at a distance from the supply section 5. A plurality of auxiliary sorting troughs 16 are arranged between the disks 11 at positions close to the discharge section 5. In the position near the supply section 4 where the contamination rate is high, brown rice that does not fit into the recess 12 on the surface of the disk has a high chance of being lifted up by the rotation of the disk together with the paddy and falling onto the auxiliary sorting gutter 16. The auxiliary sorting gutter 16 quickly transports the lifted brown rice to the middle part, and the return gutter 19 located closer to the discharge part 5 returns the mixed rice to the supply part 4 side, thereby separating multiple pieces of rice from this middle part. This allows the disks to be sufficiently subjected to the sorting action, thereby improving the sorting ability of the apparatus as a whole.

Note that each donut-shaped disk 11 has a recess 12.
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.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and FIG. 1 is taken along I-I in FIG.
A longitudinal sectional front view of the sorting device as shown in FIG.
3 is an enlarged cross-sectional view taken along the line ■-■ in FIG. 2, FIG. 4 is an enlarged plan view of the main part of the disk, and FIG.
6 is a sectional view taken along the line VI-Vll in FIG. 4. FIG. 7 is a sectional view of the second embodiment, FIG. 8 is a sectional view of the third embodiment, and FIG. 9 is a sectional view of the third embodiment. FIG. 4 is a cross-sectional view of the fourth embodiment. 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
...Auxiliary sorting gutter, 19...Return gutter, 16a, 1
9a...lip part, 16b, 19b...original plate part, 17,18°20.21...stay.

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 type grain sorting device, an auxiliary sorting gutter is arranged in an inclined manner between any pair of adjacent disks located on the side near the paddy discharge section, and the grain is lifted by rotation of both disks. It is characterized by being configured so that the paddy that is removed and falls to the front side of the brown rice receiving gutter is supplied to a portion facing the ejecting part of the disc located on the ejecting part side of the pair of discs sandwiching the auxiliary sorting gutter. Rotary disc type grain sorting device.