JPH07328543A - Grain screening apparatus - Google Patents

Abstract

PURPOSE:To sweep out residual rice through a gap by installing a gap-filling body, which engages with a gap when it descends and forms the gap to sweep out residual rice when it ascends, in the gap so that the body can slide freely on the inner surface sides of the side walls on the swing-up side and the swing- down side. CONSTITUTION:The supply side 19 of a screen is slanted longitudinally and laterally to be higher than the discharge side 20, while the swing-up side 21 is slanted likewise to be higher than the swing-down side. On the screen, slender pooling boards 34, which are arranged horizontally at specified intervals, are supported by forming a gap 35 on the horizontal side. A gap-filing body 35a, which engages with the gap 35 when it descends and forms the gap 35 to sweep out residual rice when it ascends, is installed in the gap 35. The body 35a is installed freely vertically slidably on the inner surface side of a side wall 35b on both swing-up side 21 and swing-down side 2. Consequently, at the finish of operation, a large amount of grain remains on the screen, but the gap is formed by the vertical movement of the body 35a so that the residual rice can easily be wept out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain sorting apparatus which is effective for removing brown rice from scrap rice.

[0002]

2. Description of the Related Art Conventionally, a wind tunnel having a wind turbine for blowing wind upward, a swing frame provided on an upper part of the wind tunnel, and a sorting net stretched on the swing frame to blow upward the wind. The sorting net comprises a feeding device for feeding the grains to be sorted onto the sorting net, and a swinging mechanism for reciprocally swinging the sorting net in the left-right oblique up and down directions. There is known a sorting device for taking out unpolished rice from scrap rice in a substantially rectangular shape in which one side is a discharge side, one side in the left-right direction is an upside, and the other side is an upside.

[0003]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention
The reason why wind is used is to select the lightweight grains in the grains to be sorted and guide them to the swaying side. When the wind blows, light grains rise and heavy grains do not. The floating grain does not come into contact with the oscillating sorting net, so that it is not affected by the swaying and can be drifted to the swaying side with a gradient. In such a sorting net, it is necessary to distribute the grains to be sorted evenly throughout the whole, but when the conventional sorting net is developed at the time of manufacturing,
Since it cannot be spread evenly by waving, there are irregularities on the surface,
The distribution of the grains to be sorted was uneven. Therefore, if a weir plate such as rails of a plurality of fittings elongated in the left-right direction, L-shaped steel, or strip steel is provided on the net surface of the sorting net,
Part of the grain flow is blocked and the layer becomes thicker overall, so even if there is a wave on the sorting net, the unevenness of the grain distribution can be corrected, and the wave itself of the sorting net can also be corrected by installing a weir plate. it can. However, if a weir plate is attached, there is a problem in sweeping out the residual rice, so we would like to provide a weir plate with a gap on the left and right sides, but if a gap is provided, it will not be possible to block the seats by that amount. Is equipped with a gap filling body that fits into the gap when it descends and eliminates the gap, and forms a gap when moving upward so that the residual rice can be swept out.

[0004]

Therefore, according to the present invention, the wind tunnel 2 has the wind turbine 3 provided in the fixed frame 1 and blows the wind upward.
And a swing frame 12 provided on the wind tunnel 2 and the swing frame 12
A sorting net 18 which is stretched over the above and through which the wind blows upward, and a supply device 31 which feeds the grains to be sorted onto the sorting net 18,
The sorting net 18 includes a swinging mechanism that swings the sorting net 18 back and forth obliquely in the vertical direction. The sorting net 18 has one side in the front-back direction and the other side in the supply side 19 and one side in the left-right direction. The rocking side 21 has a substantially rectangular shape with the other side being the rocking side 22, and the supply side 19 is higher than the discharge side 20 and the rocking side 21 is higher than the rocking side 22 and tilted in both front and rear, left and right directions, The surface of 18 is like a rail of a plurality of fittings elongated in the left-right direction at a predetermined interval in the front-rear direction or L
A plurality of dam plates 34, such as shape steel or strip steel, are provided with a gap 35 formed on the left and right sides, and the gap 35 is fitted into the gap 35 when descending and is moved to the above-mentioned when moving upward. Gap 35
To form a gap filling body 35a capable of sweeping out residual rice,
The gap filling member 35a includes the rocking side 21 and the rocking side 22.
The grain sorting device is provided on the inner surface side of the side wall 35b of FIG.

[Function] The scrap rice supplied from the inlet 36 is supplied to the supply device 3
1 is fried to reach the selection net 18, and the scrap rice b is slightly floated by the wind, and does not come into contact with the wire net 23 swinging therebelow, and is not subjected to the rocking force of the wire net 23. , Flows toward the swaying side 22 due to the gradient and the wind, and moves to the discharge side 20 due to the gradient and the wind. On the other hand, since the brown rice a is heavy and does not float so much even if it receives wind, it is strongly shaken by the sorting net 18 and swung up to the upside 21, and the discharge side 20
Move to the side. This movement to the discharge side 20 is performed by the sorting net 18
Since it is blocked by the dam plate 34 arranged at a predetermined interval on the upper surface of the above, it becomes a layer and slows down, so that it is widely dispersed in the left-right direction without unevenness. At the end of work, the sorting net 18
Although a large amount of grain remains on the upper part, the gap filling body 35a is moved upward, and the gap 35 is formed below it to be swept out.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the drawings, in which 1 is a peripheral fixed frame, and a fixed wind tunnel 2 for blowing upward is provided at a lower position in the fixed frame 1. The wind turbine 3 is mounted inside the shaft 2. Reference numeral 4 is a suction port of the fixed wind tunnel 2, 5 is an outlet of the fixed wind tunnel 2, 6 is a substantially horizontal wind turbine shaft extending in the front-rear direction, and 7 is a pulley attached to an end of the wind turbine shaft 6. A drive shaft 8 parallel to the wind turbine shaft 6 is provided above the fixed wind tunnel 2, eccentric wheels 9 and 9 are attached to the front and rear sides of the drive shaft 8, and the bases of the rods 10 and 10 are attached to the eccentric wheels 9 and 9. Axis. 11
Is a pulley fixed to the end of the drive shaft 8.

Above the fixed wind tunnel 2, a wind tunnel and swing frame 1 is provided.
2 is attached, the shafts 13 and 13 are projected to the lower part of the swing frame 12, and the tips of the rods 10 and 10 are axially attached to the shafts 13 and 13. The lower portions of the tilt rocking support rods 14, 14 are axially mounted above the shafts 13, 13 of the rocking frame 12, and the upper ends of the tilt rocking support rods 14, 14 are axially mounted on the fixed frame 1 side. To do. 1
5 is a motor, 16 is a drive pulley for the motor 15,
The drive pulley 16, the pulley 11 and the pulley 7
The belt 17 is hung between and.

Therefore, when the motor 15 is energized, the wind turbine 3 rotates and the wind tunnel and swing frame 12 has a swing of about 11 mm per minute.
Swing about 350 to 400 times.

A sorting net 18 is stretched above the wind tunnel and swing frame 12. The sorting net 18 has a substantially square shape as shown in FIG. 4, one side in the front-rear direction is the supply side 19, and the other side in the front-rear direction is the discharge side 2.
0, one side on the left and right sides is the swing side 21, and the other side on the left and right sides is the swing side 22. The supply side 19 side is slightly higher than the discharge side 20, and the swing side 21 is slightly higher than the swing side 22. It is high and tilted in both directions.

As shown in FIG. 3, the sorting net 18 of the embodiment has a double-layered structure of a metal net 23 made of a woven net and a punched perforated plate 25 in which a large number of air holes 24 are formed. The blown wind blows through the punched perforated plate 25 and the wire netting 23. The wire mesh 23 is 16 mesh (1 per 1 inch
A mesh with 6 eyes) is preferred.

As shown in FIG. 3, the wind blown through the sorting net 18 slightly blows up the scrap rice b supplied onto the sorting net 18 and blows the brown rice a so that it does not rise so much because it is heavy. Since the scrap rice b floats slightly, it does not come into contact with the sorting net 18 swinging in the direction of the arrow W so much below it, and therefore it does not receive a swinging force, so it is guided by the gradient and the wind and swings down. It flows to the 22 side and moves to the discharge side 20 side. Since the brown rice a is heavy, it is not affected by the wind, is strongly shaken in the direction of the arrow W, is shaken by the sorting net 18, is distributed to the shake upper side 21, and is moved to the discharge side 20 side.

On the discharge side 20 of the sorting net 18, partition plates 26 and 27 which are adjustable in the left-right direction are provided at intervals in the left-right direction.
The rocking side 21 of the partition plate 26 is formed as a brown rice outlet 28, the space between the partition plate 26 and the partition plate 27 is formed as an intermediate rice outlet 29, and the rocking side 22 of the partition plate 27 is formed as a scrap rice outlet 30. To do.
When the direction of the drive shaft 8 is in the front-rear direction, the supply device 31 is provided on the side of the rocking upper side 21 on the left and right sides, and the vertical line and supply gutter 32 is provided under the upper discharge gutter of the supply device 31.

A vertical wire is a device for separating scrap rice by pouring a metal wire in the vertical direction with a gap of about 1.70 mm or 1.75 mm, and pouring rice on it to separate scrap rice. Has stretched piano wires at intervals so that the distance can be adjusted freely.However, some of the less expensive ones have punched slits in a thin iron plate, and these are collectively called vertical lines by those skilled in the art. . Waste rice refers to about 10% of unripe rice selected from the harvested brown rice. This application selects scraps that cannot be used from the unripe rice, so a vertical line with a small slit width is supplied. It is provided below the upper drain gutter of the device 31.

The supply gutter 32 is attached in the left-right direction in relation to the rocking and is integrally fixed to the upper part of the rocking frame 12, so that it rocks together with the rocking frame 12. It is a swing 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.

The sorting net 18 has a relation of being used by unfolding a wound one, and when unfolded, it has a wavy shape due to a curl when it is unfolded. If there is unevenness, unevenness in the grain distribution will occur, so for the two purposes of unevenness correction and unevenness correction of grain distribution, the upper surface of the sorting net 18 is provided with a predetermined interval in the front-back direction,
A barrier plate 34 is provided. The weir plate 34 is for spreading a part of the rice in the left-right direction so that a part of the grain does not flow and has a layer thickness, and as an example, it is like a rail of a fitting or an L-shaped steel. Such a thing, or something like a strip steel is used. The barrier plate 34 is provided in the direction from the swaying side 21 to the swaying side 22, that is, in the left-right direction, and is attached by wire binding, fixed by a small screw, or fixed by spot welding. The length of the weir plate 34 is not full right and left, a gap 35 is provided at both ends, and residual rice is swept out from the gap 35 with a broom. However, if there is a gap 35 during the work, this portion does not have a layer thickness. Therefore, when descending, it fits into the gap 35, and when moving upward, the gap 35 is formed so that residual rice can be swept out. 35a is provided. The gap-filling body 35a is vertically slidably provided on the inner surfaces of the side walls 35b of the rocking side 21 and the rocking side 22.
A nut 35c is welded to the gap filling body 35a so that the side wall 3
A bolt 35e is inserted into the vertically elongated hole 35d formed in 5b, and screwed and fixed to the nut 35c. By loosening the bolt 35e, the gap filling body 35a can be moved up and down.

The supply gutter 32 has a triple structure of a scrap rice sorting net 37, a lower net 38, and a scrap rice flow plate 39. A clogging removal ball 40 is housed between the scrap rice sorting net 37 and the lower net 38. , And collide with the partition bar 41 having a triangular cross section to slide it. The scrap rice that has flowed through the scrap rice flow plate 39 is taken out to the take-out gutter 42.

Reference numeral 43 in FIG. 2 is a screw for adjusting the right and left inclination of the sorting net 18. In this case, the swing frame 12 is divided into upper and lower parts, and the screw 43 is attached between them.

[0017]

Operation of the Embodiment Next, the operation will be described. The brown rice that has been hulled by the hulling device removes 10 to 20% of the waste rice by the rotary scrap rice sorting device, and is distributed to the market as finished rice. However, since the removed scrap rice contains about 20% or more of brown rice, conversely, an apparatus for selecting the brown rice from the scrap rice is required. INDUSTRIAL APPLICABILITY The present invention is effective when selecting brown rice from scrap rice. The operation will be described. The bolt 35e is loosened to lower the gap filling body 35a to lower the gap 35 on both sides of the dam plate 34.
When the switch is turned on after tightening the bolt 35e and fixing it, the motor 15 is energized and the pulley 7 and the pulley 11 are rotated through the belt 17 to rotate the wind turbine shaft 6
Also, the drive shaft 8 is rotated, the wind turbine 3 fixed to the wind turbine shaft 6 is rotated to blow 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. . Since the swing frame 12 is attached to the fixed frame 1 by the tilt swing support rods 14, 14, when swinging, the swing frame 12 tilts and swings in the W direction.

In this state, when the scrap rice is supplied to the inlet 36, it is fried by the supply device 31 and flows down on the scrap rice sorting net 37 in the supply gutter 32, and the scrap rice c of extremely small grain is scrap rice. The unpolished rice a separated by the sorting net 37, passed through the lower net 38, flowed on the scrap rice flow plate 39 therebelow, and was taken out to the take-out gutter 42, was left.
The mixture of the waste rice b and the waste rice b flows down on the waste rice sorting net 37 and is supplied from the supply port 33 to the rocking side 22 of the sorting net 18 in FIGS.

Of the supplied mixture of scrap rice and brown rice, scrap rice b is slightly floated up from the selection net 18 by the wind blown up from the selection net 18, and brown rice a is so heavy that it is floated up even if the wind is received. do not do. The slightly floating scrap rice b does not come into contact with the wire net 23 which swings in the direction of the arrow W thereunder as shown in FIG. Is distributed to the swaying side 22 and moves to the discharge side 20 due to the gradient and the wind. The flow to the swaying side 22 at this time is adjusted by finely adjusting the gradient by the adjusting screw 43.

On the other hand, since the brown rice a is heavy and does not float so much even if it receives wind, it is strongly shaken by the sorting net 18 in the direction of the arrow W as shown in FIG.
Move to the discharge side 20 side. This movement to the discharge side 20
Since the flow is blocked by the weir plate 34 arranged at a predetermined interval on the upper surface of the sorting net 18, the flow becomes slow, and therefore the layer is widely dispersed in the left-right direction in a wide layer thickness and flows down for a long time for sorting. .

Since the discharge side 20 of the sorting net 18 is provided with partition plates 26, 27 which can be adjusted in the left-right direction with a space in the left-right direction, brown rice can be adjusted by adjusting the positions of the partition plates 26, 27. Is taken out to the brown rice outlet 28, the intermediate rice is taken out to the intermediate rice outlet 29, and the scrap rice is taken out to the scrap rice outlet 30. The intermediate rice taken out to the intermediate rice outlet 29 is returned to the supply device 31 and circulated.

At the end of the work, a large amount of grain remains on the sorting net 18, but the bolts 35e are loosened to fill the gaps 35a.
Is raised to form the gaps 35 on both sides of the barrier plate 34, the gaps 35 can be easily swept out.

[0023]

According to the present invention, the wind tunnel 2 having the wind turbine 3 provided in the fixed frame 1 for blowing the wind upward, the swing frame 12 provided above the wind tunnel 2, and the swing frame. The sorting net 18 stretched over the wind 12 upwards, a supply device 31 for supplying the grain to be sorted onto the sorting net 18, and a swinging mechanism for reciprocally swinging the sorting net 18 vertically and horizontally. The sorting net 18 includes one side in the front-rear direction, the other side in the supply side 19, the other side in the discharge side 20, the one side in the left-right direction, and the other side in the lower side 2
2, the supply side 19 is higher than the discharge side 20 and the swinging side 21 is higher than the swinging side 22 and is tilted in both front and rear and left and right directions, and on the surface of the sorting net 18,
A plurality of weir plates 34, such as rails of fittings, L-shaped steel, or strip steel, which are elongated in the left-right direction at predetermined intervals in the front-rear direction, are provided with a gap 35 formed on the left-right side. The gap 35 is provided with a gap filling body 35a that fits into the gap 35 when descending and forms the gap 35 when moving upward to sweep out residual rice. Since the grain sorting device is provided slidably up and down on the inner surface side of the upper side 21 and the side wall 35b of the swaying side 22, a. Since a weir plate 34 such as rails of a plurality of elongated fittings, L-shaped steel, or strip steel is provided in the above, a part of grain flow is blocked and a layer thickness is formed, and a wave is passed to the sorting net 18. Even if there is, the unevenness of the grain distribution can be corrected, and it can be selected by installing the weir plate 34. The wave of another net 18 can also be corrected. B. However, if the weir plate 34 is attached, there is a problem in sweeping out the residual rice, but since the weir plate 34 is provided with the gap 35 formed on the left and right sides, it can be easily swept from the gap 35. C. If the gap 35 is provided, the selection becomes worse by that amount, but in the present application, the gap filling body 3 that fits into the gap 35 when descending and forms the gap 35 when moving up to sweep out residual rice 3
Since 5a is provided, the efficiency does not decrease. D. Since the gap filling body 35a is provided on the inner surfaces of the side walls 35b of the swing-up side 21 and the swing-down side 22 so as to be vertically slidable, it is easy to adjust.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view.

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

FIG. 3 is a sectional view showing the operating state of the screening net.

FIG. 4 is a bird's-eye view of the working state of the sorting network.

FIG. 5 is a bird's-eye view of a working state in which a screening net is provided with a gap filling member.

FIG. 6 is a perspective view of a main part.

FIG. 7 is a vertical sectional view of a supply gutter.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Fixed frame, 2 ... Wind tunnel, 3 ... Windmill, 4 ... Suction port, 5 ... Outlet port, 6 ... Wind turbine shaft, 7 ... Wind turbine shaft pulley, 8 ... Drive shaft, 9 ... Eccentric wheel, 10 ... Rod, 11 ... Drive shaft pulley, 12 ... Wind tunnel and swing frame, 13 ... Shaft, 14 ... Inclined swing support rod, 15 ... Motor, 16 ... Drive pulley, 17 ... Belt, 18 ... Sorting net, 19 ... Supply side , 20 ... Discharge side, 21
... rocking side, 22 ... rocking side, 23 ... wire mesh, 24 ... air holes, 2
5 ... punched perforated plate, 26, 27 ... partition plate, 28 ... brown rice outlet, 29 ... intermediate rice outlet, 30 ... scrap rice outlet, 31 ... supply device, 32 ... supply gutter, 33 ... supply port, 34 … Weir board, 3
5 ... Gap, 35a ... Gap filling, 35b ... Side wall, 35c ...
Nuts, 35d ... Long holes, 35e ... Bolts, 36 ... Tightening openings, 37 ... Waste rice sorting net, 38 ... Lower net, 39 ... Waste rice flow plate,
40 ... Ball for removing clogging, 41 ... Partition bar, 42 ... Extraction gutter, 43 ... Adjustment screw.

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[Procedure amendment]

[Submission date] March 22, 1995

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

[Figure 6]

Claims (1)

[Claims] 1. A wind tunnel 2 having a wind turbine 3 provided in a fixed frame 1 for blowing wind upward, and a swing frame 1 provided above the wind tunnel 2.
2, a sorting net 18 stretched over the rocking frame 12 through which the wind blows upward, a supply device 31 for supplying the grain to be sorted onto the sorting net 18, and the sorting net 18 in a diagonally up and down direction. And a swing mechanism for swinging back and forth.
Has a substantially rectangular shape in which one side in the front-rear direction is the supply side 19, the other side is the discharge side 20, one side in the left-right direction is the swing-up side 21 and the other side is the swing-down side 22, and the supply side 19 is the discharge side. The rocking side 21 is higher than the side 20 and the rocking side 21 is higher than the rocking side 22 and is tilted in both front and rear and left and right directions. A plurality of barrier plates 34, such as rails, L-shaped steel, or strip steel, are provided with a gap 35 formed on the left and right sides, and are fitted into the gap 35 when descending. When moving upward, the gap 35 is formed to provide a gap filling body 35a capable of sweeping out residual rice.
1 and the grain sorting device provided on the inner surface of the side wall 35b of the swinging side 22 so as to be vertically slidable.