JPS6328479A - 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 relates to a grain sorting device for sorting mixed rice of paddy and brown rice using a rotating sorting cylinder having a large number of pot holes on its inner circumferential surface. It is something.

[Prior art]

There is a grain sorting machine that sorts a mixed rice of paddy and brown rice by rotating a rotary sorting tube, which has a number of pot holes on its inner circumferential surface, around a horizontal axis. Some rotary sorting cylinders are provided with a transfer helix in order to even out the layer thickness of the grains to be sorted in the rotary sorting cylinder.

[Problems to be Solved by the Invention] However, in this conventional device, since the transfer force of the transfer helix provided in the rotating sorting tube is the same on the supply side and the discharge side, the transfer force on the discharge side of the single rotation sorting tube is the same. There was a problem in that the grains to be sorted quickly flowed to the discharge side, and brown rice was mixed into the unhulled rice flowing out from the end of the single-rotation sorting tube, reducing the sorting accuracy.

Therefore, the present invention attempts to eliminate the above-mentioned drawbacks of the conventional apparatus by specially devising the transfer force of the transfer helix within the rotary sorting cylinder.

[Means to solve the problem]

The technical means of the present invention for solving such technical problems is to install grains that receive grains after sorting in a rotary sorting cylinder 11 that has a large number of pot holes on its inner circumferential surface and rotates about a horizontal axis. In installing the grain gutter 16 horizontally and providing a transfer helix 23 at the lower part of the rotary sorting cylinder 11 for transferring the grains to be sorted from the supply side to the discharge side, the transfer force of the transfer helix 23 is set so that the transfer force is larger on the supply side and more on the discharge side. The structure of the grain sorting device is characterized by its small size.

[Function and effect of the invention]

The grains to be sorted in the rotary sorting tube 11 are scooped up by the pot hole of the rotary sorting tube 11, and the brown rice in the mixed rice is separated into the grain layer 16.
A transfer helix 23 is provided at the bottom of the rotary sorting f'llll to transfer the grains to be sorted from the supply side to the discharge side, and the grains are fed to the supply side of the rotary sorting cylinder 11. The grains to be sorted are sent to the discharge side by this transfer helix 23, so that the thickness of the grain layer on the supply side is prevented from increasing, and the transfer force of this transfer helix 23 is set to be large on the supply side and small on the discharge side. Therefore, the transfer of grains on the discharge side, where the grain layer thickness tends to decrease, is weakened, and the grains flow to the discharge end of the rotary sorting tube 11 while maintaining a constant layer thickness and sorting efficiency. It is possible to reduce the contamination of unhulled rice with brown rice and improve the sorting accuracy.

〔Example〕

Embodiments of the invention shown in the drawings will be described below.

First, the structure of the embodiment will be described. Reference numeral 1 denotes a husking section, and this husking section 1 is connected to a paddy tank 2. A pair of depu rolls 3
, 3, etc. 4 is the i! u 113
The rice husks are discharged from the suction fan chamber 5 through the dust exhaust tube 6 to the outside of the machine, and the mixed rice of brown rice and paddy is sent to the lower rice receiving trough. Falling to 7, Suri Ochi Uke 4i! The mixed rice dropped into the mixed rice lifting machine 8 is conveyed through a mixed rice hopper 9 to the starting end of a supply gutter 14 which also serves as a mixed rice receiving gutter.

Reference numeral 10 denotes a sorting case, and inside the sorting case 10 there is a supply side end (as shown in FIG. The right side) and the discharge side end (the left side in the figure) are rotatably supported by drive rollers 12.12. The interior of the rotary sorting cylinder 11 includes a supply gutter 14 with a supply helix 13 and a finished rice t! with a finished rice helix 15. 16 is suspended horizontally.

In arranging the supply gutter 14 and the finished rice gutter 16 inside the rotary sorting tube 11, the feed gutter 14 is placed on the scooping side rotating from the bottom to the top of the one-rotation sorting fillill, as shown in FIG. The finishing rice gutter 16 is arranged on the side of the rotary sorting cylinder 11 that rotates from above to below, and the mixed rice scooped up by the pot hole of the rotary sorting cylinder 11 falls into the supply gutter 14.
The rice is transferred to the terminal end of the supply gutter 14 by the supply helix 13, and the feed gutter 14 also functions as a mixed rice receiving gutter. Finished rice 4ii! The discharge side end of 16 is connected to a finished rice receiving trough 19 via a finished rice flow lower cylinder 17 and a finished rice flow grain plate 18.
The finished rice is wind-selected while falling from the finishing rice flow lower pipe 17 and the finishing rice grain plate 18 to the finishing rice receiving trough 19, and the brown rice flowing down to the finishing rice receiving trough 19 is divided into finished rice. The grains are taken out of the machine via the grain lifting machine 20.

A pumping cylinder 21 is connected to the discharge side end of the rotary sorting cylinder 11. Reference numeral 22 denotes a paddy reduction value, and the upper end of the paddy reduction value 22 extends to a position below the pumping of the pumping cylinder 21 on the side of the rotary sorting cylinder 11 to remove the paddy that has been pumped upward by the pumping cylinder 21. , has a function of returning to the de-peeling section 1.

The finished rice gutter 16 has a receiver that is rotatably supported by a base of a finished rice regulating valve 16a whose area can be adjusted widely or narrowly.

Reference numeral 23 denotes a transfer helix provided in the fluidized bed portion of the grains to be sorted at the lower part of the rotary sorting cylinder 11, and the shaft end 23a of the transfer helix 23 is pivotally supported at the rear of the sorting case 10, and is used for finishing. A power transmission belt 26 is configured to enable power transmission between the pulley 24 on the shaft end 15a of the rice helix 15 and the pulley 25 on the shaft end 23a of the transfer helix 23. The transfer force of the transfer helix 23 is configured such that the pitch of the helix is gradually decreased from the supply side to the discharge side, so that the supply side of the rotary sorting tube 11 is large and the discharge side is small.

Note that the pitch of the helix may be the same, and the diameter of the shaft portion of the transfer helix 23 may be gradually increased to reduce the transfer force, or the shaft portion may be changed to two stages in stages. Further, in this embodiment, the length of the transfer helix 23 is approximately 2/3 from the supply side to the discharge side of the rotary sorting tube 11, but it is configured to extend over the entire length of the rotary sorting tube 11. It's okay.

27 is a reduced species, and this reduced species 27 is passed through the two-rotation sorting cylinder 11.
The finished rice trough 16 is arranged at an angle below the feed trough 14 in the inner part, and the finished rice trough 16. The grains that do not reach a mixed rice percentage of 14, that is, the grains that contain a relatively large amount of brown rice, are transferred to the rotary sorting tube 11.
guiding the grains downward from the rotational front side to the rotational rear side, and causing the grains to flow down and return to the rotational direction rearward than the rotational rearward side portion of the fluidized bed of grains to be sorted formed by the rotation of the rotary sorting cylinder 11,
It has the function of increasing the chance of grains mixed with a relatively large amount of brown rice fitting into the pot hole, and increasing the efficiency of collecting brown rice into the finishing rice gutter 16. Although this reduced species 27 is arranged from the middle part of the rotary sorting cylinder 11 to the discharge side, it is also possible to arrange this reduced species 27 only in the discharge side part of the rotary sorting cylinder 11.

Next, to explain the operation of the embodiment, when carrying out hulling work, the raw material is supplied to the paddy tank 2, and the rotating parts of the hulling machine are driven. The unhulled rice is subjected to a hulling action, the scraped rice is sorted in the lower scraped rice wind sorting path 4, and the rice husks are discharged from the dust exhaust pipe 6 to the outside of the machine.

The mixed rice of brown rice and paddy falls into the sliding rice receiving trough 7, and is lifted and supplied to the starting end side of the supply trough 14 on the rotary sorting cylinder 11 side via the mixed rice hopper 9 in the mixed rice lifting machine 8. The feed helix 13 in the feed [14] supplies the feed to the feed end of the rotary sorting cylinder 11.

Next, the mixed rice is scooped up by the pot hole of the rotary sorting tube 11 which is rotating clockwise in Fig. 2, the fine grain brown rice falls into the finished rice j6Jj16, and the mixed rice of paddy and some brown rice is , the unsorted mixed rice that fell into the supply gutter 14 was sorted, and the unsorted mixed rice fell into the feed gutter 14.

The feed helix 13 feeds the feed fli 14 from the conveyance terminal end into the rotary sorting tube 11 again, where it is re-sorted.

Further, the finished rice that has fallen into the finishing rice gutter 16 is conveyed to the finishing rice flow lower cylinder 17 by the finishing rice helix 15, and is transferred to the finishing rice flow grain plate 18.
While falling into the finished rice receiving trough 19, the rice is sorted by a sorting wind and taken out of the machine by the finished rice lifting machine 20.

The sorted paddy sent to the discharge side end of the rotary sorting cylinder 11 is
It enters the pumping cylinder 21, is pumped up by the pumping cylinder 21, and the paddy is returned to the upper part. 22 and is returned to the shedding section 1, where it is again subjected to the shedding action.

As described above, the grains to be sorted in the rotary sorting tube 11 are scooped up by the pot hole of the rotary sorting tube 11, and the brown rice in the mixed rice is scooped up high and falls into the finishing rice gutter 16 to be sorted. A transfer helix 23 for transferring the grains to be sorted from the supply side to the discharge side is provided at the lower part of the five-rotation sorting tube 11, and the sorted grains supplied to the supply side of the rotation sorting tube 11 are transferred to this transfer helix. Since it is sent to the discharge side at 23, it is possible to prevent the grain layer thickness on the supply side from increasing.

Since the transfer force of this transfer helix 23 is made larger on the supply side and smaller on the discharge side, the transfer of grains on the discharge side, where the grain layer thickness tends to decrease, is weakened, and a constant layer thickness is maintained to improve sorting efficiency. It is possible to reduce the contamination of brown rice into the unhulled rice flowing to the discharge end of the one-rotation sorting cylinder 11 by holding it, and improve the sorting accuracy.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and FIG. 1 is a cut side view, FIG. 2 is a cut back view, FIG. 3 is a cut side view, and FIG. 4 is a cut back view. . Explanation of symbols 1 Peeling section 2 Paddy tank 3 Dehulling roll 4 Slipped rice wind sorting path 5 Suction fan room 6 Dust exhaust tube 7 Slipped rice catcher 8 Mixed rice lifting machine 10 Sorting case 11 Rotating sorting tube 12 * dynamic roller
13 Supply helix 14 Supply gutter 15 Finishing rice helix 16 Finishing rice gutter (grain@)

Claims (1)

[Scope of Claims] [1] A grain gutter 16 for receiving grains after sorting is installed horizontally in a rotary sorting cylinder 11 which has a large number of potholes on its inner peripheral surface and rotates around a horizontal axis. A transfer helix 23 for transferring the grains to be sorted from the supply side to the discharge side is provided at the lower part of the rotary sorting cylinder 11, and the transfer force of the transfer helix 23 is large on the supply side and small on the discharge side. Grain sorting equipment.