JPH0839004A - Discharge section for grain screening device - Google Patents

Abstract

PURPOSE:To keep grains in the desired thickness to the last moment and separate them in a good manner by providing a widmill and mounting an L-shaped fitment formed by bending a porous plate on the end edge of the discharge side of a screening plate disposed in tension on a rocking frame provided on the upper section of a wind tunnel blowing wind upward. CONSTITUTION:In a grain screening device consisting of a windmill 3 in a fixed case 1, a wind tunnel 2 for blowing wind upward, a rocking frame 12 mounted on the upper section of the wind tunnel 2, a screening plate 18 disposed in tension on the rocking frame 12 and a rocking mechanism for rocking reciprocatingly the rocking frame 12 in the right and left, oblique and up and down directions, an L-shaped fitment 44 inclined higher than the discharge side 20 and formed by bending the porous plate formed on the edge of the discharge side 20 is installed on the feed side 19 of the screening plate 18. Grains fed on the screening plate 18 are rocked reciprocatingly by the rocking mechanism and wind is applied from the windmill 3 to the grains to be screened in compliance with the specific gravity. At that time, although a grain layer gets thinner on the discharge side 20 and is likely to be mixed again by flowing transversely, the layer thickness is retained to the given thickness because of the presence of the porous plate 44.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharging section of a grain sorting apparatus.

[0002]

2. Description of the Related Art Conventionally, a wind tunnel having a wind turbine provided in a fixed case for blowing wind upward, a swing frame provided at an upper portion of the wind tunnel, and the wind stretched on the swing frame are provided above. A sorting plate that blows through the sheet, a supply device that feeds scrap rice onto the sorting plate, and a swinging mechanism that reciprocally swings the sorting plate in the left-right oblique up and down directions. There is known a sorting device for taking out brown rice from a roughly square-shaped waste rice having a supply side, another side as a discharge side, one side in the left-right direction as an upside and another side as a downside.

[0003]

The above-mentioned known selection plate is
Due to the rocking, the grains are distributed from the rocking side to the rocking side according to the specific gravity. However, in the discharge part, the resistance is lost, and thus the separated grains may be laterally displaced and remixed.

[0004]

Therefore, according to the present invention, the wind tunnel 2 having the wind turbine 3 provided in the fixed case 1 for blowing the wind upward, and the swing frame 12 provided at the upper portion of the wind tunnel 2 are provided. And a selection plate 18 through which the wind stretched over the swing frame 12 blows upward.
And a supply device 31 for supplying scrap rice onto the selection plate 18,
The sorting plate 18 includes a swinging mechanism that swings the swinging frame 12 back and forth diagonally up and down, and one side of the sorting plate 18 in the front-rear direction is a supply side 19 and the other side is a discharge side 20 in the left-right direction. Has a substantially rectangular shape with the other side being the swing side 22 and the supply side 19 is higher than the discharge side 20 and the swing side 21 is higher than the swing side 22 and tilted in both front and rear and left and right directions, and the sorting is performed. The plate 18 serves as a discharge part of a grain sorting apparatus in which an L-shaped metal fitting 44 formed by bending a perforated plate is attached to the edge of the cut discharge side 20.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a peripheral fixed case. A wind tunnel 2 that blows upward is fixedly provided at a lower position in the fixed case 1, and a wind turbine 3 is axially mounted in the wind tunnel 2. 4 is a suction port of the wind tunnel 2 and 5 is a wind tunnel 2
Outlet, 6 is a wind turbine shaft that is substantially horizontal in the front-rear direction, and 7 is a wind turbine shaft 6
A drive shaft 8 parallel to the wind turbine shaft 6 is provided on the upper part of the wind tunnel 2 by a pulley attached to the end of the drive shaft 8, and eccentric wheels 9 and 9'are attached to the front and rear sides of the drive shaft 8 to form the eccentric wheel 9. , 9'is equipped with the bases of the rods 10, 10 '. Reference numeral 11 is a pulley fixed to the end of the drive shaft 8.

A wind tunnel / rocking frame 12 is attached to the upper part of the wind tunnel 2, and shafts 13 and 13 'provided on the lower part of the rocking frame 12.
Then, the tips of the rods 10 and 10 'are axially attached. At the position above the shafts 13 and 13 'of the rocking frame 12, the lower parts of the tilt rocking support rods 14 and 14' are pivotally mounted, and the tilt rocking support rod 1 is provided.
The upper ends of 4, 14 'are pivotally attached to the fixed case 1 side. Reference numeral 15 is a motor, and 16 is a drive pulley. A belt 17 is wound around the drive pulley 16 and the pulley 11 and the pulley 7.

On the upper part of the wind-tunnel / rocking frame 12, a selection plate 18 is stretched. As shown in FIG. 3, the sorting plate 18 has a substantially square shape, one side in the front-rear direction is a supply side 19, the other side is a discharge side 20, one side is a swinging upper side 21, and the other side is a swinging side 22. Discharge side 2
The supply side 19 is slightly higher than 0, the swing side 21 is slightly higher than the swing side 22, and they are inclined in both front, rear, left and right directions.

As shown in FIG. 4, the sorting plate 18 has a wire mesh 23.
This is a double-layered structure of punched perforated plates 25 in which a large number of small air holes 24 are formed, and the air blown up from the air outlet 5 is blown through the punched perforated plates 25 and the wire netting 23. The wind that blows through the perforated plate 25 and the wire net 23 is, for example, the selection plate 1
The lightly scraped rice b supplied above 8 is slightly floated above the wire net 23, but the heavy brown rice a is blown to such an extent that it does not float so much, and the scrapped rice b slightly floats, so that it swings in the direction of the arrow W. Since it does not come into contact with the wire net 23 so much, and therefore the rocking force is not strongly received, it flows to the rocking side 22 side according to the gradient and moves to the discharge side 20 side. Since the brown rice a is heavy and does not float so much even if it receives a wind, it is strongly shaken in the direction of the arrow W, is swung up by the upside 21, and moves to the discharge side 20.

Outside the discharge side 20, partition plates 26, 27 that are adjustable in the left-right direction are provided at intervals in the left-right direction, and the rocking upper side 21 of the partition plate 26 is the brown rice outlet 28 and the partition plate 26. An intermediate rice outlet 29 is formed between the partition plate 27 and a scrap rice outlet 30 on the lower side 22 of the partition plate 27. A supply device 31 is provided on the side of the upper side 21 of the sorting plate 18, and a vertical line and supply gutter 3 is provided below the upper discharge gutter of the supply device 31.
2 is provided.

The supply gutter 32 is mounted in the left-right direction and is integrally fixed to the upper part of the rocking frame 12 and therefore rocks together with the rocking frame 12 so that it is a rocking type.
The tip of the supply gutter 32 is opened laterally to form a supply port 33, and the position of the supply port 33 is on the swinging side 22 as shown in FIG.

Barrier plates 34 are arranged on the upper surface of the sorting plate 18 at a predetermined interval. The barrier plate 34 is for spreading the grains as much as possible so as to prevent them from flowing, and is like a rail of fittings, like L-shaped steel,
You can also use something like strip steel. The dam plate 34 is fixed in the direction from the upside 21 to the downside 22, that is, in the left-right direction. The length of the weir plate 34 is not full right and left, and both ends are mounted with a slight allowance 35, and residual rice is swept out from the interval 35. The intermediate rice outlet 29 is returned to the spigot 36 of the supply device 31.

37 is a scrap rice sorting plate, 38 is a lower net, 39 is a scrap rice flow plate, 40 is a ball, 41 is a partition bar, 42 is a scrap rice picking gutter, and 43 is a left / right tilt of the sort plate 18. It is a screw. An L-shaped metal fitting 44 obtained by bending the punched porous plate 25 into an L-shape is brought into contact with the edge of the sorting plate 18 on the discharge side 20 to perform spot welding. 46 is a spot welding mark. The L-shaped metal fitting 44 prevents the grain from sliding sideways and remixing due to the resistance of the upper surface 45, and also serves as a cover for the unclean cut of the wire net 23 and the punched perforated plate 25.

[0013]

[Operation] Next, the operation will be described. When the switch is turned on,
The wind turbine shaft 6 and the drive shaft 8 are energized by energizing the motor 15 and rotating the pulley 7 and the pulley 11 via the belt 17.
Is rotated to rotate the wind turbine 3 fixed to the wind turbine shaft 6 to blow up the air from the outlet 5, and the swing frame 12 is swung by the eccentric wheel 9 and the rod 10 provided on the drive shaft 8. Swing frame 12
Is attached to the fixed case 1 by means of the tilt rocking supporting rods 14, 14, and thus tilts in the W direction.

In this state, when the scrap rice is supplied from the inlet 36, it is fried by the supply device 31 and flows down on the scrap rice sorting plate 37 in the supply trough 32, and only the very small scrap rice is separated. Passing through the lower net 38, flowing over the scrap rice flow plate 38 therebelow, and taken out to the take-out trough 42, the mixed grains of the brown rice a and the scrap rice b flow down on the scrap rice sorting plate 37 and the supply port 33 More sorting plate 18
4 is supplied to the rocking side 22 of FIG.
It is distributed all over the layer thickness.

As shown in FIG. 4, the sorting plate 18 is a stack of two punched perforated plates 25 and a wire net 23, so when the scrap rice b receives the wind blown through it, it slightly floats above the wire net 23 and the brown rice in the layer. Since a is heavy, it does not surface so much even if it receives wind. The slightly lifted scrap rice b does not come into contact with the wire net 23 swinging in the direction of the arrow W so much, and therefore is not subjected to the rocking force of the wire net 23, flows to the rocking side 22 side according to the gradient, and It also moves to the discharge side 20 on a gradient. At this time, the flow to the swaying side 22 is adjusted by adjusting the gradient delicately by the adjusting screw 43. In the embodiment, the wind blows with directivity in the direction of the swaying side 22 and the direction of the discharging side 20, which assists the movement of the scrap rice.

Since the brown rice a is heavy, it does not rise so much even if it is exposed to the wind.
And is moved to the discharge side 20 side. The movement to the discharge side 20 is delayed because the flow is blocked by the weir plate 34 arranged on the upper surface of the selection plate 18 at a predetermined interval, so that the movement is spread widely in the left-right direction and the time is extended. Be sorted.

On the discharge side 20, the grain thickness becomes thin because it flows out to the outlets 28, 29, 30 that are open there, and both brown rice and scrap rice are shaken and remixed. Therefore, in the present proposal, since the L-shaped metal fitting 44 having a large frictional resistance is attached to the edge of the discharge side 20 of the selection plate 18, the grain layer does not become thin due to the resistance of the upper surface 45 of the L-shaped metal fitting 44, and therefore the brown rice Stays there and does not mix with scrap rice.

[0018]

EFFECTS OF THE INVENTION The known sorting plate distributes the grains from the upper side to the lower side according to the specific gravity by swinging. However, since there is no resistance at the discharging part, the separated grains are laterally displaced and re-wound. Sometimes mixed. However, according to the present invention, the wind tunnel 2 having the wind turbine 3 provided in the fixed case 1 for blowing the wind upward, the swing frame 12 provided at the upper part of the wind tunnel 2, and the swing frame 1 are provided.
A selection plate 18 stretched above the wind that blows upward,
The sorting plate 18 includes a feeding device 31 for feeding scrap rice onto the sorting plate 18 and a swinging mechanism for swinging the swinging frame 12 back and forth diagonally up and down. Swing the supply side 19 to the other side and the discharge side 20 to the left and right one side.
1 has a substantially rectangular shape with the other side being the swinging side 22, and the supply side 19 is higher than the discharge side 20 and the swinging side 21 is the swinging side 2
2. The sorting plate 18 is tilted in the front-rear direction and the left-right direction, and the sorting plate 18 is used as a discharging portion of a grain sorting device in which an L-shaped metal fitting 44 formed by bending a perforated plate is attached to the cut edge of the discharging side 20. Therefore, the grain supplied to the sorting plate 18 receives the reciprocal swinging in the left-right slanted and vertical directions by the swinging mechanism and the wind blown from the windmill 3 to be distributed to a desired thickness and sorted according to the specific gravity. , At the discharge side 20, the grain layer becomes thin and flows sideways and tries to be remixed, but since a perforated plate is attached, it receives some resistance and does not become thin because it is a little accumulated,
Maintain the desired thickness until the end and separate well. Further, since the perforated plate is the L-shaped metal fitting 44, it covers the cut edge of the improper selection plate 18.

[Brief description of drawings]

FIG. 1 is an overall vertical sectional side view.

FIG. 2 is a sectional view taken along line AA.

FIG. 3 is a bird's-eye view of the operating state of the sorting network.

FIG. 4 is a sectional view showing the operating state of the screening net.

FIG. 5 is a vertical cross-sectional view of a discharge unit.

FIG. 6 is a perspective view of a discharge unit.

[Explanation of symbols]

1 ... Fixed case, 2 ... Wind tunnel, 3 ... Windmill, 4 ... Suction port, 5
... Blowout port, 6 ... Wind turbine shaft, 7 ... Wind turbine shaft pulley, 8 ... Drive shaft, 9, 9 '... Eccentric wheel 10, 10' ... Rod, 11
... Drive shaft pulley, 12 ... Wind tunnel and swing frame, 13, 1
3 '... Shaft, 14, 14' ... Inclined swing support rod, 15 ... Motor, 16 ... Drive pulley, 17 ... Belt, 18 ... Sorting net, 19 ... Supply side, 20 ... Discharge side, 21 ... Swing upper side, 22
... swaying side, 23 ... upper net, 24 ... air hole, 25 ... punched perforated plate, 26, 27 ... partition plate, 28 ... brown rice outlet, 29 ... intermediate rice outlet, 30 ... scrap rice outlet, 31 ... Supply device, 32
... Supply trough, 33 ... Supply port, 34 ... Dam plate, 35 ... Interval, 3
6 ... Tightening port, 37 ... Waste rice sorting plate, 38 ... Lower net, 39 ... Waste rice flow plate, 40 ... Clogging removal ball, 41 ... Partition bar, 42
... Extraction trough, 43 ... Adjusting screw, 44 ... L-shaped metal fitting, 45 ... Top surface, 46 ... Spot welding mark.

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[Procedure amendment]

[Submission date] October 7, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

[Figure 5]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

[Figure 6]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiaki Kobayashi 404, Oonomori, Tendo City, Yamagata Prefecture Yamamoto Manufacturing Co., Ltd.

Claims (1)

[Claims] 1. A wind tunnel 2 having a wind turbine 3 provided in a fixed case 1 for blowing wind upward, a swing frame 12 provided at an upper part of the wind tunnel 2, and a tension frame stretched on the swing frame 12. The sorting plate 18 through which the wind blows upward, a supply device 31 for supplying scrap rice onto the sorting plate 18, and a swinging mechanism for swinging the swinging frame 12 back and forth in a diagonally up and down direction. The sorting plate 18 is
One side in the front-rear direction is a supply side 19, the other side is a discharge side 20, one side in the left-right direction is a swinging side 21, and the other side is a swinging side 22. The rocking upper side 21 is higher than the rocking side 22 and is inclined in both front and rear and right and left directions, and the sorting plate 18 is provided with an L-shaped metal fitting 44 formed by bending a perforated plate on the edge of the cut discharge side 20. Discharge part of grain sorter.