JPS6075374A - Rotary 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 a sorting device for sorting brown rice from mixed rice after hulling.

[Conventional technology]

A rotary sorting cylinder having a number of concave portions formed on its inner peripheral surface is installed horizontally, and one end of the rotary sorting cylinder has a supply section for a mixture of brown rice and paddy, and the other end has a paddy discharge section. A rotary grain sorting device in which a brown rice receiving trough with an open top surface extending in the axial direction of the sorting barrel is provided in the rotary sorting barrel is disclosed in Japanese Patent Application Laid-open No. It is disclosed in Japanese Patent No. 41-24746.

In this rotary grain sorting device, the mixed rice supplied into the sorting river is scraped up to a height by the rotation of the sorting barrel, and then flows in a parabolic manner while falling to the bottom, forming a fluidized bed. While moving to the discharge side, the mixed rice gets stuck in the four parts and is lifted up to a high position, then falls down and makes a large parabolic movement.
Even if a part of the paddy of the mixed rice fits into the recess, it falls from a lower position than the brown rice and performs a relatively small parabolic movement.Using this fact, it falls from a high position with a large parabolic movement. Brown rice is taken out by receiving it in a brown rice receiving trough, but in this case, even if the rice is the same mixture, depending on the grain, how well it fits into the four parts and how well it slides into the recess may vary depending on the size of the grain, moisture content, etc. Because of the difference, some of the brown rice makes a relatively small parabolic movement and falls at a low position, while some of the paddy makes almost the same parabolic movement as the brown rice and falls at a high position. The brown rice will be lifted up and mixed into the brown rice receiving trough. Therefore, in order to reduce the number of paddy that enters the brown rice receiving trough and improve the sorting accuracy of brown rice, it is a good idea to reduce the frequency of paddy that fits into the recesses in the sorting barrel, and to reduce the number of paddy that fit into the recesses in the sorting barrel. In order to reduce the frequency of whole paddy, it is necessary to reduce the proportion of paddy contained in the mixed rice flowing as described above in the sorting barrel.

[Problem that the invention seeks to solve]

However, in the rotary grain sorting device of the prior art described above, mixed rice after hulling is supplied to one end of the sorting barrel, and brown rice is extracted from this mixed rice while being discharged from the other end of the sorting barrel. Since the rice is raked up into the brown rice receiving gutter and dropped, the proportion of paddy contained in the mixed rice in the sorting barrel becomes higher as the brown rice in the mixed rice is sown into the brown rice receiving gutter and falls. exhibit a tendency. In other words, although the amount of paddy in the mixed rice flowing in the sorting barrel is large, the frequency with which the paddy gets stuck in the recesses on the inner surface of the sorting barrel increases, and this prevents brown rice from fitting into the recesses. Therefore, the number of paddy entering the brown rice receiving trough increases, and the accuracy of sorting brown rice decreases.
The selection ability also deteriorated.

The present invention provides a rotary grain sorting device of this type, in which a mixed rice receiving gutter is arranged in parallel with a brown rice receiving gutter in the sorting barrel,
By allowing the paddy that is lifted to a relatively high position to enter the mixed rice receiving trough as described above, it is possible to improve the sorting accuracy and sorting ability, while reducing the length of the paddy that enters the mixed rice receiving trough. This enhances the effect of the mixed rice receiving trough.

[Means for solving problems]

Therefore, in the present invention, a rotary sorting cylinder having a plurality of concave portions formed on the inner circumferential surface is installed horizontally, and a supply part for mixed rice of brown rice and paddy is placed at one end of the rotary sorting cylinder, and a supply part for mixed rice of brown rice and paddy is placed at the other end. In the rotary grain sorting device, the rotary sorting barrel is provided with a paddy discharge section, and a brown rice receiving trough extending in the axial direction of the sorting barrel is provided in the rotary sorting barrel. Inside, a part on the mixed rice scraping side in the sorting barrel with respect to the brown rice receiving gutter,
A mixed rice receiving gutter is provided approximately parallel to the brown rice receiving gutter, and the discharge port of the mixed rice receiving gutter is communicated with the supply section of the sorting cylinder, while the mixing inside the sorting cylinder is connected to the left and right side plates of the mixed rice receiving gutter. The gap between the tip of the side plate on the rice sowing side and the inner circumferential surface of the sorting cylinder is determined by the gap between the tip of the side plate on the mixed rice scraping side in the sorting cylinder and the inner circumferential surface of the sorting cylinder among the left and right side plates of the brown rice receiving trough. It is configured to be narrower than the gap interval.

[Action/effect of the invention]

With this configuration, as the sorting barrel rotates, the brown rice that has been lifted up to a relatively high position while fitting into the recess on the inner surface enters both the brown rice receiving gutter and the mixed rice receiving gutter. However, since the mixed rice receiving gutter is closer to the side where mixed rice is raked up in the sorting barrel than the brown rice receiving gutter, there are
Some paddy is added along with the brown rice.

However, the proportion of paddy contained in the mixed rice that enters the mixed rice receiving trough as the sorting cylinder rotates is considerably smaller than the proportion of paddy in the mixed rice supplied to the sorting cylinder. By introducing the mixed rice in the rice receiving trough from the discharge port of the mixed rice receiving trough to the supply section at one end of the sorting cylinder, the paddy in the mixed rice flowing as described above in the sorting cylinder is reduced. Since the ratio is diluted and lowered by the introduction and mixing of the brown rice that enters the mixed rice receiving trough, the ratio of paddy in the mixed rice flowing in the sorting barrel is lower than when the mixed rice receiving trough is not used. This will result in a decline.

Therefore, the frequency of paddy that fits into the many four parts on the inner surface of the sorting barrel decreases, and the number of brown rice that fits into the recesses increases accordingly, and accordingly, the number of paddy that enters the brown rice receiving trough also decreases. Since the number of brown rice increases, not only the accuracy of sorting brown rice can be significantly improved, but also the sorting capacity can be increased.

In this case, the amount of brown rice entering the brown rice receiving trough and the mixed rice receiving trough should be adjusted to the maximum length (in order to make the amount of brown rice that enters the brown rice receiving trough and the mixed rice receiving trough as long as possible, it is necessary to The gap should be increased or widened, but in addition to widening the gap between the tip of the side plate on the mixed rice scraping side inside the sorting cylinder of the brown rice receiving gutter and the inner peripheral surface of the sorting cylinder, If the gap between the tip of the side plate on the scraping side of the mixed rice inside the sorting cylinder and the inner peripheral surface of the sorting cylinder is widened, a relatively large amount of the mixed rice flowing in the sorting cylinder will be removed as the sorting cylinder rotates. Among the large parabolically interlocking paddy, many of the paddy are mixed rice from the wide gap between the tip of the side plate and the inner circumferential surface of the sorting cylinder that go down to the mixed rice sowing side inside the sorting cylinder which is placed in the mixed rice receiving trough. In other words, the amount of paddy that enters the mixed rice receiving channel increases, which reduces the effect of installing the mixed rice receiving channel.

In contrast, in the present invention, as described above, the gap between the tip of the side plate and the inner circumferential surface of the sorting cylinder on the mixing rice sowing side in the sorting cylinder of the brown rice receiving trough is adjusted to The gap is narrower than the gap between the tip of the side plate and the inner circumferential surface of the sorting cylinder on the rice scraping side. With this structure, the mixed rice flowing inside the sorting cylinder is separated as the sorting cylinder rotates. The relatively large paddy that moves parabolically hits the surface of the side plate on the mixed rice raking side inside the sorting barrel of the mixed rice receiving trough and falls directly to the bottom of the sorting barrel, so the amount of paddy entering the mixed rice receiving trough can be reduced. While it is possible to regulate the amount of brown rice to a small amount, the amount of brown rice that enters the brown rice receiving trough does not decrease.

That is, according to the present invention, the effect of providing the mixed rice receiving trough, that is, the ability to improve the sorting accuracy and sorting ability of brown rice can be surely promoted.

〔Example〕

Next, an embodiment in which the present invention is applied to the primary sorting of a two-stage rotary sorting device in a rice hulling sorter will be described. The hulling and sorting machine A is entirely composed of a wind sorting device B which is a rectangular box, a hulling section C mounted on the top surface of the wind sorting device B, and a two-stage rotary sorting device. ing.

In the wind sorting device B, a mixed rice conveyor 1 configured to serve as a mixed rice thrower shaft and a brown rice conveyor 2 configured to serve as a brown rice thrower shaft are installed in parallel, and the mixed rice conveyor l
is disposed at the bottom of the winnowing chamber 3 for the husked rice dehulled in the hulling section C, and the brown rice conveyor 2 is disposed at the bottom of the winnowing chamber 4 for the unhulled brown rice. At one end of the wind selection device B in the longitudinal direction, there is suction and exhaust! (Atmospheric suction ports 6 and 6' are provided at the other end and on the top surface, respectively.
The wind introduced into the wind selection device I3 from 6 passes through the wind selection chamber 4 for the finished brown rice, the wind selection chamber 30 for the small rice, and the wind selection chamber 3 for the fallen rice, and is then sent to the suction dust extractor 5. It is designed to be attracted.

A mixed rice thrower 7 communicating with the mixed rice conveyor 1 and a brown rice thrower 8 communicating with the brown rice conveyor 2 are provided on the side surface of the wind sorting device B, and the hulling section C is
It is equipped with a paddy supply hopper 10 and a pair of left and right misbehaving rolls 9, and below the misbehaving rolls 9, a winnowing chamber 3 for the fallen rice is seen.

The two-stage rotary sorting device WD includes a primary sorting cylinder I and a secondary sorting cylinder (2) horizontally disposed in upper and lower stages in a box-like case 12, and both sorting cylinders 1. II is rotatably supported, and has a recess 13 on its inner surface that is large enough to fit brown rice.
Many dents are formed. In this case, the recess 13 is
A hemispherical shape with an inner diameter of about 5-6°5 baking soda and a depth of about 3-4 WI11 is suitable.

Further, both ends of the secondary sorting cylinder I and the secondary sorting cylinder II are open, and their axes are perpendicular to the axis of the misbehaving roll 9, and both of these sorting cylinders I
, II are rotationally driven in the right direction as shown by the arrow in FIG. 2 by belt transmission from a motor M provided in the wind selection device B.

Both sorting cylinders 1. Inside U, various receiving channels such as brown rice receiving channels are arranged so as to extend in the axial direction of the sorting barrel. That is, inside the secondary sorting cylinder 1, there are spiral condensers 1 and 1.
A brown rice receiving gutter 18 having a brown rice receiving gutter 18 is disposed such that both ends of the brown rice receiving gutter 18 are fixed to the box-shaped case 12, and the mixed rice in the left side of the brown rice receiving gutter 18, that is, in the primary sorting cylinder l is The mixed rice and wheat Ji 21, which also has a spiral conveyor 15 inside, is placed in the brown rice receiving trough 18 on the scraping side.
It is arranged almost parallel to. On the other hand, inside the secondary sorting cylinder 1, there is a finished brown rice receiving trough 25 with a built-in spiral conveyor 16.
and a small rice receiving trough 17 having a built-in spiral conveyor 27 are arranged such that the finished brown rice receiving trough 25 is located on the left side, that is, on the brown rice scraping side in the secondary sorting cylinder (2).

In a tank 29 provided above one end of the box-shaped case 12, the upper end of the mixed rice thrower 7 can be seen, while the lower part of the tank 29 is a mixed rice receiver in which the secondary sorting cylinder IIZ is placed. A supply side 1' that communicates with one end of the gutter 21 and connects the other end outlet 21a of the mixed rice receiving gutter 21 to the other end of the primary sorting cylinder 1.
A brown rice receiving trough 18 in the secondary sorting cylinder I is provided with a chute 20 that opens inward and communicates with the paddy supply hopper 10 in the hulling section C below the discharge side I'' at one end of the secondary sorting cylinder I. The outlet at the other end is communicated via the chute 31 with the supply side II' which is connected to the other end of the secondary sorting cylinder H, and is connected to the lower side of the discharge side IIu at one end of the secondary sorting cylinder H. A chute 23 is provided which communicates with the mixed rice conveyor 1 in the wind sorting device B, and one end of the finishing brown rice receiving trough 25 in the secondary sorting cylinder 2 is connected to the wind sorting device B through the chute 24. It communicates with the finishing brown rice selection chamber 4, and furthermore, one end outlet of the small rice receiving trough 17 in the secondary sorting cylinder 1 is communicated with the small rice selection chamber 3o in the screening device B through a chute (not shown).

Of the left and right side plates of the brown rice receiving trough 18, the side plate 18' on the left side, that is, the side plate 18' on the mixed rice scraping side in the sorting cylinder I, and the left and right side plates of the mixed rice receiving trough 21, which go down into the sorting cylinder 2. In extending the side plate 21' on the mixed rice sowing side upward toward the inner circumferential surface of the sorting cylinder I, a &J side plate 2
The gap between the tip 21'' of 1' and the inner peripheral surface of the sorting cylinder ■ (7!
2) is configured to be narrower than the gap (β1) between the tip of the side plate 1B' on the mixed rice sowing side in the sorting cylinder and the inner circumferential surface of the sorting cylinder 1 among the left and right side plates of the brown rice receiving trough 18.

When paddy is supplied to the paddy supply popper 10 during operation, the mixed rice that has been desiliconized in the hulling section C is husked by the wind flowing toward the suction dust remover 5 in the wind sorting chamber 3 for removed rice. After being removed, the mixed rice enters the mixed rice conveyor 1, and this mixed rice is sent to the mixed rice receiving trough 21 in the primary sorting cylinder 1 via the mixed rice thrower 7 and the tank 29. From the outlet 21a of 21, the liquid is supplied to the supply side 2' which enters the secondary sorting cylinder I.

In this way, the mixed rice fed into the secondary sorting cylinder I is
- The particles are sown up to a height created by the rightward rotation of the secondary sorting plate I, and then fall to the bottom repeatedly, forming a fluidized bed while being transferred toward the discharge side I'' of the primary sorting cylinder 1.

During this flow, the brown rice in the mixed rice is transferred to the next sorting cylinder 1.
After being lifted up to a relatively high place while fitting into the recess 13 on the inner surface of the rice, it falls from the fourth part 13 and enters both the mixed rice receiving trough 21 and the brown rice receiving trough 18.
Since the mixed rice receiving trough 21 is located on the side of the brown rice receiving trough 18 that scoops up the mixed rice in the primary sorting cylinder l, a small amount of paddy will enter the mixed rice receiving trough 21 along with the brown rice. However, the amount of paddy entering the mixed rice receiving pipe 21 is
The gap distance (β2) between the tip 21'' of the side plate 21' on the mixed rice sowing side in the sorting cylinder and the inner circumferential surface of the sorting cylinder l of the left and right side plates in the brown rice receiving trough 18 is Side plate 18' on the mixed rice sowing side in the sorting cylinder
Gap distance between the tip and the inner peripheral surface of sorting 1111mI (11)
Due to the narrower configuration, the amount can be regulated to a small amount, so that the proportion of paddy in the mixed rice supplied from the mixed rice conveyor 1 to the primary sorting cylinder 1 can be adjusted by mixing and diluting the brown rice entering the mixed rice receiving trough 21. It will be lowered.

In other words, most of the brown rice in the secondary sorting cylinder I enters the brown rice receiving channel 18 by a large parabolic motion as shown by the arrow (A) in FIG. A part of the paddy in the mixed rice that enters the mixed rice receiving trough 21 and is supplied into the primary sorting cylinder I is caused by a parabolic movement smaller than that shown in (a) as shown by the arrow (b). While lowering the ratio, the mainstream of the parabolic motion of paddy inside the secondary sorting cylinder I is that among the walled paddy, which is smaller than the parabolic motion (a) and (b) of the brown rice, the parabolic motion of the brown rice ( There are objects that exhibit parabolic motion similar to (b).

In this case, the gap distance (β1) between the tip of the side plate 18' and the inner peripheral surface of the sorting cylinder I on the mixed rice scraping side in the sorting cylinder of the brown rice receiving trough I8, and the mixed rice sowing in the sorting cylinder of the mixed rice receiving trough 21. When the gap distance (12) between the tip 21'' of the side plate 21' on the raised side and the inner circumferential surface of the sorting cylinder I is widened, the amount of brown rice entering the brown rice receiving channel 18 can be increased; All of the paddy that moves parabolically (b) enters the mixed rice receiving trough 21, and the amount of paddy entering the mixed rice receiving trough 21 increases. The gap distance (12) between the tip 21'' of the side plate 21' on the mixed rice sowing side in the sorting cylinder and the inner peripheral surface of the sorting cylinder 1 is determined by the gap distance (12) between the side plate 18' on the side of the brown rice receiving trough 18 on the mixed rice sowing side in the sorting cylinder. By making the gap between the tip and the inner circumferential surface of the sorting barrel (β1) narrower than that, a very small portion of the paddy with a large parabolic motion is obtained, which is close to the parabolic motion of brown rice (b). Only the rice entering the mixed rice receiving trough 21 exceeds the tip 21'', and the other paddy hits the surface of the side plate 21' and falls, so the amount of paddy entering the mixed rice receiving trough 21 can be controlled to a small amount. On the other hand, the amount of brown rice entering the brown rice receiving trough 18 can be increased.

In this embodiment, the mixed rice receiving trough 21 is connected to a supply trough for transferring the mixed rice after the silica-free wind sorting to the primary sorting cylinder (2).

After the brown rice is removed into the mixed rice receiving trough 21 and the brown rice receiving trough 18 in the primary sorting cylinder I as described above, the mixed rice is transferred from the discharge side 1 rr of the primary sorting cylinder I to the chute 20.
The paddy is sent to the paddy supply hopper 10 via the paddy, and the desiliconizing action is performed again. On the other hand, the brown rice receiving trough 1 in the -next sorting cylinder I
The brown rice that has entered 8 is passed through the chute 31 to the secondary sorting cylinder H.
It is then sent to Japan, where it is re-sorted.

Zunawaji, the brown rice supplied into the secondary sorting cylinder ■ flows as described above, and as it is being transferred to the discharge side ■'', the brown rice is transferred to the finished brown rice receiving trough 25, and the small rice is mixed with small rice. After being sorted to enter the receiving gutter 17, the finished brown rice flows out from the discharge side through the chute 23 to the mixed rice conveyor 1, while the finished brown rice that has entered the finished brown rice receiving gutter 25 passes through the chute 24. After entering the brown rice conveyor 2 through the brown rice conveyor 2, it is taken out from the brown rice thrower 8.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the entire huller sorting machine, and FIG. 2 is a sectional view taken along line X-X in FIG. 1. 1... Sorting cylinder , 13... Concavity, I'... Supply side, 1''... Discharge side, 18... Brown rice receiving gutter, 2
1...Mixed rice receiving trough, 18'...Side plate placed on the mixed rice sowing side inside the sorting barrel of the brown rice receiving trough, 21'...
Side plate on the mixed rice scraping side inside the sorting barrel of the mixed rice receiving trough. Patent applicant Seirei Kogyo Co., Ltd.

Claims (1)

[Claims] (1) A rotary sorting cylinder with a number of concave portions formed on its inner circumferential surface is installed horizontally, a supply unit for mixed rice of brown rice and paddy is installed at one end of the rotary sorting cylinder, and a supply unit for supplying mixed rice of brown rice and paddy is placed at the other end. In a rotary grain sorting device, the rotary grain sorting device is provided with a brown rice receiving trough extending in the axial direction of the sorting barrel, and a brown rice receiving gutter extending in the axial direction of the sorting barrel is provided in the rotary sorting barrel. In this method, a mixed rice receiving gutter is provided approximately parallel to the brown rice receiving gutter in a part on the second side of the brown rice receiving gutter for sowing mixed rice in the sorting barrel, and the mixed rice receiving gutter is discharged from the mixed rice receiving gutter. While communicating with the supply section in the sorting cylinder,
The gap between the tip of the side plate on the second side and the inner circumferential surface of the sorting cylinder for sorting mixed rice in the sorting cylinder among the left and right side plates that go down into the mixed rice receiving gutter, A rotary grain sorting device characterized in that the gap is narrower than the gap between the tip of the side plate and the inner peripheral surface of the sorting barrel on the mixed rice sowing side in the barrel.