JPH01199680A - Grain screening device - Google Patents

Abstract

PURPOSE:To improve screening efficiency by removing small rice in a small rice screening section which is constituted of spiral transfer vanes and a screening net trough wound around the outside peripheral face of a rotary screening cylinder and supplying the grains to be screened to the rotary screening cylinder. CONSTITUTION:The mixed rice supplied to the supply side of the rotary screening cylinder 11 is scooped up by the pot hole of the cylinder 11 under rotation and the hulled rice falls onto a finish rice trough 16. The mixed rice falls to the supply trough where the mixed rice is screened. The unscreened and mixed rice falling to the supply trough is supplied from the carrying terminal part of the supply trough by the supply spirals into the cylinder 11 where said rice is screened again. The small rice is subjected to the screening effect in the small rice screening section consisting of the transfer spiral vanes 23a and the screening net trough 23b and is thereby removed. The grains to be screened are then supplied to the cylinder 11. The screening efficiency is thereby improved.

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 potholes on its inner peripheral surface. It is something.

[Prior art]

There is a grain sorting machine that sorts a mixed rice mixture of paddy and brown rice by rotating a rotary sorting tube, which has many potholes on its inner circumferential surface, around a horizontal axis.

[Problem that the invention seeks to solve]

In the conventional device, inside this rotary sorting tube, a finishing rice gutter is installed horizontally to receive the brown rice that has been drawn up through the pot hole of the rotary sorting tube in the long plane direction, and the mixed rice of paddy and brown rice is placed on the supply side of the rotary sorting tube. While flowing to the discharge side, brown rice with short grain length is pumped up high and falls into the finishing rice trough above, while unhulled rice with long grain length is pumped up low and falls again into the rotating sorting tube until it reaches the supply side. The rice is sorted while flowing from there to the discharge side, and the sorted rice is discharged from the discharge side end of the rotary sorting cylinder.

In such a sorting process, there is a problem in that small rice mixed in the grains to be sorted clogs the pot hole of the rotary sorting tube, reducing the sorting efficiency.

Therefore, the present invention aims to improve the sorting efficiency and make the structure more compact by constructing a small rice sorting section by effectively utilizing the outer circumference of the rotary sorting tube.

[Means to solve the problem]

The technical means of the present invention for solving such technical problems is that a finishing rice trough 16 for receiving brown rice is installed in a rotary sorting cylinder 11 which has a large number of potholes in its inner peripheral surface and rotates around a horizontal axis.
is hung horizontally, and a transfer helix is provided on the outer peripheral surface of the rotary sorting cylinder 11.
In addition to winding the rotary sorting tube 11, a sorting net gutter 23b is provided on the outer periphery of the rotary sorting tube 11 through which small particles can leak.
A fried grain supply is provided on the terminal end side of the transfer helical blade 23a of the rotary sorting cylinder 11, which can lift and supply the grains conveyed by the transfer helical blade 23a to one end of the rotary sorting cylinder 11. The structure of the grain sorting device is characterized in that the device 24 is provided.

[Function and effect of the invention]

When the mixed rice is sorted into paddy and brown rice in the rotary sorting tube 11, the transfer helical blade 23a is located on the outer periphery of the rotary sorting tube 11 and is wrapped around the outer circumferential surface of the rotary sorting tube 11.
The grains to be sorted are supplied to the rotary sorting tube 11 after the millet has been removed by the millet sorting section 23, which is composed of a sorting net gutter 23b. This can be prevented and the sorting efficiency can be improved.

In addition, the small rice sorting section 23 is arranged so as to be located on the outer periphery of the single-rotation sorting tube 11, and is composed of a transfer helical blade 23a wrapped around the outer circumferential surface of the rotary sorting tube 11 and a sorting gutter 23b. This allows one aircraft to be made compact.

〔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 paddy removal section, and this removal section 1 is connected to a paddy tank 2. A pair of depu rolls 3
, 3 etc. Reference numeral 4 denotes a sloughed rice wind sorting path, in which the sloughed rice from the husking section 1 is sorted by the sorting air generated by the suction fan 5 in front, and the rice husks are passed from the suction fan 5 to the dust exhaust pipe 6 and then taken out of the machine. The mixed rice of brown rice and paddy falls into the sliding rice receiving trough 7 below, and the mixed rice that has fallen into the sliding rice receiving trough 7 is passed through the mixed rice hopper 9 by the mixed rice lifting machine 8. It is configured to be supplied to a small rice sorting section 23 formed on the outer periphery of the rotary sorting tube 11.

This rice sorting part 23 is wound around the outer peripheral surface of the rotary sorting cylinder 11, and has a transfer helical blade 23a with the side farther from the scraping part 1 as the sorting starting end, and a lower half of the outer peripheral side of this transfer helical blade 23a. It consists of a sorting net gutter 23b, which is located in a corresponding position, and has a sorting hole through which the rice can leak, and a rice receiving gutter 23c, which is located below the sorting net gutter 23b.

In this embodiment, the sorting gutter 23b is configured in a fixed state, but the sorting gutter 23b may be configured in a cylindrical shape and configured to rotate in the opposite direction of the transfer helical blades 23a. Alternatively, when the sorting mesh tube 23b is in a fixed state, it may be formed into a cylindrical shape corresponding to the entire circumference of the rotary sorting tube 11.

10 is a sorting case that covers the small rice sorting section 23.

Next, to explain the structure of the inner peripheral side of the rotary sorting tube 11, the inner circumferential surface of the rotary sorting tube 11 is configured with a large number of potholes, and this rotary sorting tube 1°1 rotates around the horizontal axis. The feed end (on the right in FIG. 1) and the discharge end (on the left in FIG. 1) are rotatably supported by drive rollers 12, 12 so as to allow rotation. Inside this rotary sorting cylinder 11, a supply gutter 14 with a supply helix 13 and a finished rice 4ii16 with a finished rice helix 15 are suspended horizontally.

In arranging the supply gutter 14 and the finished rice gutter 16 inside the rotary sorting cylinder 11, the supply gutter 14 is placed on the pumping side of the rotary sorting cylinder 11 rotating from the bottom to the top, as shown in FIG. Finished rice 4i! ! ! 16 is disposed on the rotating side of the rotary sorting cylinder 11 from above to below, and one rotation sorting f? i1
The mixed rice drawn up through the pot hole 1 falls into the supply M14, and is configured to be transferred to the end side of the supply gutter 14 by the supply spiral 13, and the supply gutter 14 also functions as a mixed rice receiving gutter. ing. The discharge side end of the finished rice gutter 16 is connected to the finished rice receiving gutter 19 via the finished rice flow lower cylinder 17 and the 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.

At the discharge side end of the rotary sorting cylinder 11, there is a reduction pumping cylinder 2.
1 are installed in succession. 22 is a paddy reducing gutter, and the paddy reducing gutter 2
The upper end of 2 is the reduction pumping cylinder 2 on the rotary sorting cylinder 11 side.
It extends to a position below the pumping section 1 and has a function of returning the paddy that has been pumped upward by the return pumping cylinder 21 to the shredding section 1.

Reference numeral 24 denotes a large-diameter supply pumping cylinder connected to the discharge side end of the rotary sorting cylinder 11, and is configured so that the grains after being sorted by the millet sorting section 23 flow from the terminal end of the sorting net machine 23b. The grains pumped up by the supply pumping cylinder 24 are
The grains fall into the mixed rice supply gutter 25, are supplied to the starting end of the feed gutter 25, and are supplied to the feed side end of the rotary sorting cylinder 11.

Next, the operation of the embodiment will be explained. When carrying out the hulling operation, the rice grains are supplied to the rice tank 2, and each rotating part of the hulling machine is driven. Then, the paddy supplied from the paddy tank 2 to the phusher section 1 is subjected to the dehulling action, the scraped rice is sorted in the lower scraped rice wind sorting path 4, and the rice husks are discharged from the machine through the waste m pipe 6. be done. In addition, the mixed rice of brown rice and paddy falls into the sliding tree receiver @ 7, and is lifted up by the mixed rice lifting machine 8 via the mixed rice hopper 9 to the starting end side of the sorting net machine 23b of the millet sorting section 23. Supplied.

Next, while the mixed rice supplied to the starting end of the sorting net @i 23 b is transferred to the discharge side by the transfer helical blade 23 a, the milled rice is transferred from the sorting hole of the sorting net machine 23 b to the lower millet receiving trough 2.
3c, and was taken out of the machine.
The unhulled rice and grain-sized brown rice sent to the terminal side in b flow into the supply pumping cylinder 24 at the end of the one-rotation sorting cylinder 11 and are pumped up, and further into the mixed rice supply gutter 25.b. It is supplied to the interior of the supply side of the rotary sorting cylinder 11 through the supply gutter 13 .

Next, the mixed rice supplied to the supply side of the one-rotation sorting ill is pumped up by the pothole of the rotating sorting cylinder 11 which is rotating clockwise in FIG. Some of the mixed rice, including brown rice, falls into the supply gutter 14 and is sorted, and the unsorted mixed rice that has fallen into the feed gutter 14 is transferred from the conveyance end of the feed gutter 14 to the rotating sorting cylinder 11 again by the feed helix 13. It is supplied to the interior and 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
The paddy enters the reduction pumping cylinder 21, is pumped up by the reduction pumping cylinder 21, falls into the upper paddy reduction gutter 22, is reduced to the shedding section 1, and is again subjected to the shedding action in the shedding section 1.

The hulling and sorting work is carried out as described above, and when the mixed rice is sorted into paddy and brown rice in the rotating sorting tube 11, the mixed rice that has been rubbed off in the hulling section 1 and subjected to the wind sorting action is removed. First, the small rice sorting section 23 is located on the outer periphery of the rotary sorting tube 11 and is composed of a transfer helix Q 23 a wound around the outer circumferential surface of the rotary sorting tube 11 and a sorting 1!4ffi 23 b. The grains to be sorted consisting of unhulled rice and sized brown rice are then fed to the rotary sorting cylinder 11, thereby preventing clogging of the pot hole of the rotary sorting cylinder 11 with small rice. This makes it possible to improve sorting efficiency.

Note that the transfer helical blade 2 is located on the outer periphery of the rotary sorting tube 11 and is wrapped around the outer circumferential surface of the rotary sorting tube 11.
3a and the sorting mesh cylinder 23b, the grain to be sorted supply part of the rice sorting part 23 is arranged close to the shucking part 1. At the same time, the supply side of the rotary sorting tube 11 is located at a position far from the shedding section 1, and the discharge side of the rotary sorting tube 11 is located close to the shedding section 1. The return route of the grains mainly consisting of unhulled rice after sorting in step 11 to the husking section 1 is shortened and simplified, and the entire machine body can be made compact. In this case, the grains pumped up by the supply pumping 24 are
The mixed rice is directly supplied to the supply side of the rotary sorting nll via the mixed rice supply gutter 25.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and FIG. 1 is a cutaway side view, and FIG. 2 is a cutaway side view. Explanation of symbols 1 Slipping section 2 Paddy tank 3 Slipping roll 4 Slipped rice wind sorting path 5 Suction fan room 6 Discharge tube 7 Slipped rice catcher 8 Mixed rice grain lifting machine 9 Mixed rice hopper 10 Sorting case 11 Rotation Sorting tube 12
Drive roller 13 Supply helix 14 Supply gutter (mixed rice gutter) 15 Finished rice helix 16 Finished rice gutter 17 Finished rice flow lower tube 18 Finished rice flow grain plate 19 Finished rice receiving gutter 20 Finished rice grain lifting machine 21 Reduction pumping cylinder 22 Paddy Reduction value 23 Millet sorting section 23a Transfer helical blade 23b Sorting net machine 23c Millet receiving trough 24 Supply pumping cylinder (lifting/grain supply device) 25 Pf1 Combined rice supply trough Applicant name Iseki Agricultural Machinery Co., Ltd. Representative Iseki Masataka

Claims (1)

[Scope of Claims] [1] Finished rice gutter 1 for receiving brown rice in a rotary sorting cylinder 11 which has a large number of potholes on its inner peripheral surface and rotates around a horizontal axis.
6 is hung horizontally, and a transfer helical blade 23a is wound around the outer circumferential surface of the rotary sorting tube 11, and a sorting net gutter 23b through which small particles can leak is arranged on the outer circumference of the rotary sorting tube 11. A fried grain feeding device 24 is provided on the terminal end side of the transfer helical blade 23a of the rotary sorting cylinder 11, which can lift and supply the grains conveyed by the transfer helical blade 23a to one end of the rotary sorting cylinder 11. A grain sorting device characterized by: