JPS63104685A - 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 provides a grain sorting device for sorting mixed rice such as paddy and brown rice using a rotating sorting cylinder having a large number of potholes on the inner circumferential surface. It is related to.

[Prior art]

There is a grain sorting device that sorts mixed rice, including paddy and brown rice, using a rotating sorting tube with many potholes on its inner circumferential surface. This grain sorting device is equipped with a transfer helix at the bottom of the one-rotation sorting tube that forcibly transfers the grains to be sorted from the supply side to the discharge side, and the grains to be sorted that are fed into the rotary sorting tube are There is a system that detects the amount of grains and controls the amount of grains fed into the sorting cylinder in one rotation.

(Problems to be Solved by the Invention) In this conventional device, the fluidized bed of grains to be sorted is formed by one rotation of the sorting tube.

A plate-shaped layer thickness detector is in contact with the upper portion where the mold/rice ratio is relatively high, and the transfer helix is arranged in the lower portion where the brown rice ratio is relatively low. Based on such technical knowledge, the present invention slows down the flow of grains to be sorted in the part of the fluidized bed of grains to be sorted that corresponds to the layer thickness detector, which has a relatively high proportion of brown rice, so that the grains can be sorted in a rotating sorting cylinder. In addition to increasing sorting efficiency by increasing the number of opportunities for sorting, the lower part of the grains to be sorted, which has a relatively low ratio of brown rice, is quickly sent to the discharge side using the grain transfer means, reducing the number of opportunities for sorting in the rotating sorting tube. This is an attempt to improve sorting efficiency.

[Means to solve the problem]

The technical means of the present invention for solving this technical problem is that a finished rice trough for receiving brown rice is placed in a rotary sorting cylinder 11 which has a large number of pot holes formed on its inner peripheral surface and rotates around a horizontal axis. 1
6 is disposed on the supply side of the rotary sorting tube 11, and a plate-shaped layer thickness detecting device 2 that contacts the upper surface of the grains to be sorted and rotates in the vertical direction.
3, and return guides 26, 26, . A grain transfer means 28 for transferring the grains to be sorted from the supply side to the discharge side is provided at the bottom of the rotary sorting tube 11 on the lower side of the rotation of the rotary sorting tube 11 of the layer thickness detection tool 23. The structure of the grain sorting device is as follows.

[Operation and effect of the invention]

When the plate-shaped layer thickness detector 23 comes into contact with the surface of the grains to be sorted in the rotary sorting cylinder 11 to detect the layer thickness, the layer thickness detector 2
3 detects the layer thickness by contacting the portion of the grain to be sorted with a relatively high ratio of brown rice at the top of the fluidized bed. is provided with return guides 26, 26, etc. that guide the grains to be sorted from the discharge side to the supply side of the rotary sorting cylinder 11, so that the grains to be sorted corresponding to this layer thickness detector 23 are The grains are returned to the guide body 2
6. At 26..., the brown rice is returned from the discharge side to the supply side, and the flow to the discharge side is slowed down, and there are many opportunities for sorting through the pot hole of the rotating sorting tube 11, so the brown rice is pumped into the finishing rice gutter 16. This increases the chance of sorting and improves the sorting efficiency, and the grains in the part of the layer thickness detection tool 23 that is in contact with the grains to be sorted can be separated even if the flow of the grains to be sorted is slowed down. Grain transfer means 28 transfers the grains in the lower portion of the grain fluidized bed where the ratio of brown rice is low.
Since the grains to be sorted are transferred to the discharge side at the layer thickness detecting device 23, there is no possibility that the layer thickness detection will be disturbed due to an extremely large number of grains to be sorted in the layer thickness detection device 23, and the ratio of brown rice at the bottom of the fluidized bed to the grains to be sorted can be reduced. Since the grains with a small amount are transferred to the discharge side by the grain transfer means 28, it is possible to reduce the chances of sorting grains with a low ratio of brown rice, and at the same time, it is possible to 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 phushu section, and this phushu section 1 is connected to a paddy hopper 2. A pair of depu rolls 3
, 3 etc. Reference numeral 4 denotes a sloughed rice winding passage, in which the sloughed rice from the shedding section 1 is sorted by the sorting wind generated by the suction fan chamber 5 in front, and the rice husks are passed from the suction fan chamber 5 through the dust exhaust pipe 6 to the machine. The mixed rice of unpolished rice and paddy is discharged outside and falls into the sliding rice receiving trough 7 below, and the fallen rice that has fallen into the sliding floor tray @ 7 is transferred to the mixed bed grain lifting machine 8 and the mixed rice supply hopper 9. The mixed rice is conveyed to the starting end of the feeder 14 which also serves as a receiving trough.

Reference numeral 10 designates one sorting case, and inside the sorting case 1o, a rotary sorting tube 11 having a large number of potholes on its inner peripheral surface is provided with a feed side end (as shown in FIG. 3) so that it can rotate almost horizontally. right side) and the discharge side end (left side in Figure 3) by driving roller 1.
It is rotatably supported by 2.12. This rotating sorting tube 1
1, a supply @ 14 with a supply helix 13 and a finishing rice trough 16 with a finishing rice helix 15 are installed horizontally.

When disposing the supply gutter 14 and the finished rice gutter 16 in the rotary sorting tube 11, the finished rice @16 is placed in the rotary sorting tube 1.
The mixed rice scooped up by the pot hole of the single-rotation sorting tube 11 is arranged so that the supply @14 is placed from the upper side of the rotating sorting tube 11 to the side rotating downward. , falls to the feeder 14, and the feeder helix 1
3, the rice is transferred to the terminal side of the feeder 14, and the feed gutter 14 also serves as a mixed rice receiving gutter.

The discharge side of the finished rice gutter 16 is communicated with the finished rice receiving gutter 19 via the finished rice flow lower tube 17 and the finished rice flow grain plate 18,
While the finished rice falls from the finishing rice flow lower tube 17 and the finishing rice flow grain board 18 to the finishing rice receiving trough 19, the brown rice is wind-selected and flows down to the finished rice receiving trough 19.

At the discharge side end of the one-rotation sorting cylinder 11 that is taken out of the machine through the finished rice lifting machine 20, there is a primary upper cylinder body 21.
The unhulled rice that has flowed into the beginner's upper cylinder body 21' is pumped upward and is returned to the unhulling section 1 through the unhulled rice return gutter 22.

Reference numeral 23 denotes a layer thickness detector, which is configured in a plate shape and is located below the supply gutter 14 on the supply side of the rotary sorting tube 11, and is pivotally supported by the layer thickness detection shaft 24, and is configured to detect the inside of the rotary sorting tube 11. The device contacts the upper surface of the grains to be sorted and moves up and down to detect an increase or decrease in the amount of grains to be sorted. This detection result is transmitted from the discharge side end of the layer thickness detection shaft 24 to the paddy supply control valve 25 of the husking section 1 via an interlocking member (not shown) composed of a rod, an arm, etc. When the layer thickness detector 23 detects an increase in the number of grains to be sorted and rotates upward, the paddy supply control valve 25 is adjusted to the decrease side.
The rotary sorting tube 11 is configured to properly hold the grains to be sorted.

This layer thickness detection tool 23 is configured in a plate shape, and the surface side that contacts the grains to be sorted has a rotary sorting cylinder 1
A large number of return guide bodies 26 are installed in an inclined manner so that the upper part is located closer to the discharge side than the lower part.

Reference numeral 27 denotes a support arm extending from the supply gutter 14, and this support arm 27 has a transfer arm for forcibly transferring the grains to be sorted from the supply side to the discharge side corresponding to the lower part of the fluidized bed of the grains to be sorted. A helix 28 is supported, and the transfer helix 28 is driven by a drive source such as a motor (not shown). Note that this transfer helix 28 may be any type as long as it transfers the grains to be sorted from the supply side to the discharge side, and may be a spring conveyor or a belt conveyor. The feed rate may be adjusted and controlled by increasing, decelerating, or stopping the transfer speed.

Next, the operation of the embodiment will be explained. Paddy is supplied to the paddy hopper 2 of the hulling section 1, and each rotating part of the hulling machine is driven.

Then, the paddy supplied from the paddy hopper 2 to the shedding section 1 is subjected to the shedding action, and the scraped rice is sorted in the lower scraped rice wind sorting path 4.
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 sent to the mixed rice grain lifting machine 8 through the mixed rice supply hopper 9 and then to the supply trough 14 on the side of the rotary sorting cylinder 11.
The supply helix 1 in the supply receiving trough 14 is lifted up and supplied to the starting end side.
3, it is supplied to the supply side end of the rotary sorting cylinder 11.

Next, the mixed rice is scooped up by the pot hole of the rotary sorting cylinder 11 rotating clockwise in FIG. It fell into gutter 14 and was sorted out.

The unsorted mixed rice that has fallen into the supply gutter 14 is transferred to the supply helix 1.
At step 3, the raw material is supplied from the conveyance terminal end of the supply gutter 14 into the rotary sorting cylinder 11 again, and is re-sorted. Also.

The finished rice that has fallen into the finishing rice gutter 16 is conveyed to the finishing rice flow lower tube 17 by the finishing rice helix 15, passes through the finishing rice grain plate 18, and is sorted by a sorting wind while falling to the finishing rice receiving gutter 19.
The finished rice is taken out of the grain lifting machine 20.

The sorted paddy sent to the discharge side end of the rotary sorting cylinder 11 is
The paddy flows into the elementary upper barrel 21, passes through the paddy reducing gutter 22, is returned to the shedding section 1, and undergoes a dehulling action.

The hulling and sorting work is performed as described above, but when the amount of grains to be sorted in the rotary sorting cylinder 11 is increased or decreased,
The layer thickness detector 23 in contact with the upper surface of the grains to be sorted moves up and down, and the paddy supply control valve 25 of the shedding section 1 moves to the decreasing side via the layer thickness detection shaft 24° interlocking member (not shown). Alternatively, the amount of grains to be sorted into the rotary sorting tube 11 is adjusted in relation to the increasing side, and the hulling and sorting work is performed while keeping the amount of grains to be sorted into the rotary sorting tube 11 within an appropriate range.

In addition, when the plate-shaped layer thickness detector 23 comes into contact with the surface of the grains to be sorted in the rotary sorting tube 11 to detect the layer thickness, the one layer thickness detector 23 is connected to the upper part of the fluidized bed of the grains to be sorted. The layer thickness is detected by contacting the portion with a high ratio of brown rice, and the surface side of this plate-shaped layer thickness detection device 23 that contacts the grains to be sorted is used to collect the grains to be sorted from the rotary sorting cylinder 11. Since the return guides 26, 26, etc. are provided to guide the return from the side to the supply side, the grains to be sorted corresponding to the layer thickness detecting tool 23 are returned by the return guides 26, 26, etc. The brown rice is returned to the supply side from the discharge side and the flow to the discharge side is slowed down, and by the amount of slowdown, there are more opportunities for sorting through the pot hole of the rotating sorting cylinder 11, and the brown rice is pumped into the finishing rice gutter 16. This increases the chance of sorting and improves the sorting efficiency, and even if the flow of the grains to be sorted slows down to the part of the layer thickness detection tool 23 that is in contact with the grains to be sorted, the grains to be sorted are Since the portion of the lower part of the fluidized bed with a low ratio of brown rice is transferred to the discharge side by the transfer helix 28, there is no possibility that the number of grains to be sorted in the layer thickness detection device 23 portion becomes excessively large and the layer thickness detection is disturbed. Since the part of grains to be sorted with a low brown rice ratio at the bottom of the fluidized bed is transferred to the discharge side by the transfer helix 28, it is possible to reduce the chances of sorting grains with a low brown rice ratio, and at the same time increase the sorting efficiency. It is possible to improve this.

[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 Slipping section 2 Hull hopper 3 Slipping roll 10 Sorting case 11 Rotary sorting cylinder 1112 Drive roller 13 Supply helix 14
Supply gutter 1415 Finishing rice helix 16 Finishing rice gutter 1
621 Beginner's upper cylinder body 22 Rice reduction machine 23 Layer thickness detection tool 2324 Layer thickness detection shaft 25 Rice supply control valve 26
Return guide 27 Support arm

Claims (1)

[Scope of Claims] [1] A finishing rice gutter 16 for receiving brown rice is arranged in a rotary sorting cylinder 11 which has a large number of potholes formed on its inner circumferential surface and rotates about a horizontal axis, and A plate-shaped layer thickness detector 23 that contacts the upper surface of the grains to be sorted and rotates in the vertical direction is provided on the supply side of the sorting cylinder 11, and the layer thickness detector 23 contacts the grains to be sorted. On the surface side, there are return guides 26, 26, .
A layer thickness detector 23 at the bottom of the rotary sorting tube 11 is provided.
A grain sorting device is provided with a grain transfer means 28 for transferring the grains to be sorted from the supply side to the discharge side on the lower rotation side of the rotary sorting tube 11.