JPH07289996A - Grain selection apparatus - Google Patents

Abstract

PURPOSE:To facilitate manufacture of a selection net by laminating an upper net prepd. by performing spot welding of a lot of dam plates in a specified distance on the upper face and a punched multi-hole plate prepd. by performing spot welding of a frame metal tool for reinforcement on the lower face and performing mutually spot welding thereof. CONSTITUTION:When a wind mill shaft 6 and a driving shaft 8 are driven by means of a motor 15 through transmitting means 17, 7 and 11, a wind mill 3 is rotated to blow up wind from an air plenum 5 and a rocking frame 12 is rocked through rocking means 9 and 10. Under this condition, when waste rice is fed on a selection net 18 from a feeding apparatus 31, unpolished rice and waste rice are selected and are taken out by the action of a slope and the wind. In this case, a the selection net 18, a lot of dam plates 34 are arranged in a specified distance on the upper face of the upper net 23. On the other hand, a frame metal tool 25a for reinforcement is arranged on the lower face of a punched multi-hole plate 25. A selection net 18 is constituted by laminating the upper net 23 and the punched multi-hole plate 25 and performing spot welding 25c thereof. Manufacturing of the selection net 18 is made easy.

Description

Detailed Description of the Invention

[0001]

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

[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. And a swinging mechanism that swings the sorting net back and forth in a slanting vertical direction. The sorting net feeds one side in the front-back direction. There is known a grain sorting device having a substantially rectangular shape with the other side being the discharge side, the one side in the left-right direction being the swinging side, and the other side being the swinging side.

[0003]

As described above, a swinging frame is provided above the wind tunnel that blows the wind upward, and a sorting net is attached to the swinging frame. Fine grains can be selected by oscillating reciprocally and tilting in both the front, back, left and right directions, and constructing the sorting net by stacking two upper nets and punched perforated plates. In such an apparatus, if the weir plates that are long in the left-right direction are arranged on the upper surface of the sorting net at a desired number of front and rears, the entire surface will be evenly distributed and uniform selection will be possible. As for the perforated plate and the upper net, when it is made of a material, a long product is wrapped, and this is stretched and processed.
It can be wavy and cannot be corrected. In addition to the uniform distribution over the entire surface, the dam plate can also serve the purpose of correcting waviness. Similarly, if a crosspiece that is long in the left-right direction is attached to the lower surface of the punched perforated plate, the corrugation of the punched perforated plate can be corrected. In the present application, a weir plate is attached to the upper net, a crosspiece is attached to the punched perforated plate, and the whole structure is made easy to manufacture.

[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 sorting net 18 stretched over the swing frame 12 through which the wind blows upward.
And a supply device 31 for supplying grain 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. In the grain sorting apparatus in which the rocking side 21 has a substantially quadrangular 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, back, left and right directions, The screening net 18 is one in which weir plates 34 that are long in the left-right direction are arranged on the upper surface of the upper net 23 with a desired number of front and back spaced, and the weir plates 34 are fixed by spot welding 34a.
Reinforcing crosspieces 25a that are long in the left-right direction are arranged on the lower surface of the punched perforated plate 25 with a desired number of front and rear intervals, and the crosspieces 25a are fixed by spot welding 25b.
The upper net 23 and the punched perforated plate 25 are superposed on each other in two layers, and spot welded 25c at the portion of the dam plate 34 and the crosspiece 25a to integrally fix the grain selection device. .

[0005]

An 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. Reference numeral 4 is a suction port, 5 is an outlet, 6 is a wind turbine shaft that is substantially horizontal in the front-rear direction, and 7 is a passive pulley attached to the end of the wind turbine shaft 6. At the upper part of the wind tunnel 2, a wind turbine shaft 6
A drive shaft 8 parallel to the drive shaft 8 is provided, eccentric wheels 9 and 9 are attached to the front and rear sides of the drive shaft 8, and the bases of rods 10 and 10 are mounted on the eccentric wheels 9 and 9, respectively. Reference numeral 11 is a passive 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 are
The tips of the rods 10 and 10 are axially attached. The swing frame 1
At a position above the two shafts 13 and 13, the tilt swing support rod 1 is provided.
The lower portions of 4 and 14 are pivotally attached, and the upper ends of the tilting swing support rods 14 and 14 are pivotally attached to the fixed case 1 side. 15 is a motor, 16
Is a drive pulley, and a belt 17 is wound around the drive pulley 16, the passive pulley 11 and the passive pulley 7.

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

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 a supply side 19, the other side is a discharge side 20, one side on the left and right sides is an upper side 21, and the other side is a lower side 22. Discharge side 2
Supply side 19 is higher than 0 and swing side 2 is higher than swing side 22
1 is high and is inclined in both directions.

The sorting net 18 of the embodiment has a double-layered structure of an upper net 23 made of a woven net as shown in FIG. 3 and a punched perforated plate 25 in which numerous air holes 24 are formed. The wind blows through the punched perforated plate 25 and the upper net 23. As the upper net 23, for example, 16 mesh (a net having 16 eyes per inch) is used.

The air blown through the sorting net 18 slightly lifts the scrap rice b supplied onto the sorting net 18 by the wind to produce brown rice a.
Since it is heavy, it is possible to sort the scrap rice b by blowing it so that it does not float so much. That is, since the scrap rice b is light and floats slightly, it does not come into contact with the sorting net 18 that swings in the direction of the arrow W below that much, and therefore does not receive the swinging force in the W direction. It is guided by the gradient and flows to the swaying side 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 swung up by the sorting net 18, and moves 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.
A supply device 31 such as an elevator is provided on the side of the rocking side 21 of the fixed case 1, and a vertical wire / supply gutter 32 is provided below 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. Is a piano wire stretched with a front and rear spacing so that the spacing can be adjusted freely, but the less expensive one is a thin iron plate with a slit punched out, and these are collectively called vertical lines by those skilled in the art. . The scrap rice is once sorted by a vertical line, but in the present application, a vertical line having a slit width smaller than that is supplied to the feeding device 31.
Installed in the lower part of the discharge gutter.

Since the supply gutter 32 is formed to be long in the left-right direction and is integrally fixed to the upper part of the swing frame 12, it swings together with the swing frame 12 so that it is swingable. The leading end of the supply gutter 32 opens toward the supply side 19 and the supply port 3
3 is formed, and the position of the supply port 33 is on the rocking side 22 as shown in FIG.

Barrier plates 34 are arranged on the upper surface of the screening net 18 at predetermined intervals in the front-rear direction. Dam plate 34
The purpose is to disperse the scrap rice widely in the left and right direction so that the grain does not flow as much as possible, and as an example, it is like a rail of fittings, L-shaped steel, or strip steel. To use. The barrier plate 34 is provided in a direction from the swaying side 21 to the swaying side 22, that is, in the left-right direction, and is spot-welded 34a to the upper net 23 as shown in FIG. On the lower surface of the punched perforated plate 25, a crosspiece 25a for reinforcement is brought into contact, spot welding 25b is performed, and a dam plate 34 is attached.
Upper net 23 with spot welding 34a and reinforcing bar 2
The punched perforated plate 25 obtained by spot welding 25a of 5a is polymerized and spot welded 25c. In addition, the sorting net 18 of FIG.
Is an embodiment in which the tilt can be adjusted. The rocking frame 12 is divided into upper and lower parts to form an upper rocking frame 12a, and an adjusting screw 35 is attached between the rocking frame 12 and the upper rocking frame 12a. Screw 3
5 is rotated to adjust the angle of the sorting net 18. 36 is a stakeout port. The supply gutter 32 has a triple structure of a scrap rice sorting plate 37, a lower net 38, and a scrap rice flow plate 39.
The clogging removal ball 40 is housed between the No. 7 and the lower net 38, and collided with the partition bar 41 having a triangular cross section to make it vibrate. The scrap rice that has flowed through the scrap rice flow plate 39 is taken out to the take-out gutter 42.

However, the air blown through the sorting net 18 cannot be evenly sorted unless all the portions are blown uniformly. However, there occurs a phenomenon in which the wind blows strongly at one part and the wind does not come at all in the other part. In order to solve this point, in the present application, the punched perforated plate 43 is stretched over the wind tunnel 2 in the embodiment of FIG. 1, and the punched perforated plate 43 is stretched over the swing frame 12 in the embodiment of FIG.

[0016]

[Operation] Next, the operation will be described. The brown rice that has been hulled by the hulling device is subjected to removal of the waste rice by the rotary waste rice sorting device, and is distributed to the market as finished rice. However, since about 20% of brown rice is contained in the removed brown rice, a mechanism for selecting brown rice from the brown rice is required. INDUSTRIAL APPLICABILITY The present invention can be used for various other selections, but is also used for selecting brown rice from scrap rice in this way. The operation of the selection will be described. When the switch is turned on, the motor 15 is energized to rotate the passive pulley 7 and the passive pulley 11 via the belt 17 to rotate the wind turbine shaft 6 and the drive shaft 8 to rotate the wind turbine shaft 6 The wind turbine 3 fixed to the shaft is rotated to blow wind from the outlet 5, and the eccentric wheel 9 and the rod 10 provided on the drive shaft 8 are rotated.
The rocking frame 12 is rocked by and. Since the swing frame 12 is attached to the fixed case 1 by the tilt swing support rods 14, 14, the swing frame 12 tilts and swings in the W direction.

In this state, when 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 gutter 32, and the extremely small scrap rice is separated. It also passes through the lower net 38, flows over the scrap rice flow plate 38 therebelow, and is taken out to the takeout gutter 42. The brown rice a and the scrap rice b flow down on the scrap rice sorting plate 37 and are supplied from the supply port 33 to the swinging side 22 of FIG.

The waste rice b of the sorting net 18 receives the wind and the sorting net 1
It slightly floated from No. 8, and brown rice a did not float so much even if it was exposed to wind because it was heavy. The slightly boiled waste rice b does not come into contact with the upper net 23 that swings in the direction of the arrow W below that much, and therefore is not subjected to the swinging force of the sorting net 18, and therefore the swinging side 22 side due to the gradient and the wind. Flow to the discharge side 20 due to the gradient and wind. The flow to the swaying side 22 at this time is adjusted by finely adjusting the gradient by the adjusting screw 35.

On the other hand, 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 of the sorting net 18 to be swung up to the upside 21 and moved to the discharge side 20. To do. The movement to the discharge side 20 is delayed because the flow is blocked by the weir plate 34 arranged at a predetermined interval on the upper surface of the sorting net 18, so that it is widely dispersed in the left-right direction and is sorted for a long time. To be done.

Since the discharge side 20 of the sorting net 18 is provided with left and right adjustable partition plates 26 and 27 at intervals in the left and right direction, the brown rice can be adjusted by adjusting the positions of the partition plates 26 and 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.

In the above-mentioned structure, weir plates 34 are arranged on the upper surface of the upper net 23 at predetermined intervals in the front-rear direction, and on the lower surface of the punched perforated plate 25, the reinforcing metal fittings 2 are provided.
5a is provided, the barrier plate 3 is provided on the upper surface of the upper net 23 in the present application.
4 is spot-welded 34a and the punched perforated plate 25 has a reinforcing crosspiece 25a spot-welded 25b on the lower surface thereof, which are superposed and spot-welded 25c.

[0022]

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 on the upper part of the wind tunnel 2, and the swing frame. From the sorting net 18 stretched over the wind blown upwards 12, the feeding device 31 that feeds the grain onto the sorting net 18, and the swinging mechanism that reciprocally swings the sorting net 18 vertically and horizontally. In the sorting net 18, one side in the front-rear direction is on the supply side 19, the other side is on the discharge side 20, one side in the left-right direction is on the upper side 21, and the other side is on the lower side 22.
In the grain sorting apparatus in which the supply side 19 is higher than the discharge side 20 and the swinging side 21 is higher than the swinging side 22 in both the front, back, left and right directions, the sorting net 18 is
The weir plates 34, which are long in the left-right direction, are arranged on the upper surface of the upper net 23 at a desired number of intervals, and the weir plates 34 are fixed by spot welding 34a. Two pieces of the upper net 23 and the punched perforated plate 25 are superposed on each other by arranging a long number of reinforcing crosspieces 25a at a desired number of intervals and fixing the crosspieces 25a by spot welding 25b. Since it is a grain sorting device which is superposed on and is integrally fixed by spot welding 25c at the portion of the dam plate 34 and the crosspiece 25a, the wind tunnel 2 for blowing the wind upward, and the wind tunnel 2 Rocking frame 12 provided on the upper part of the rocking frame, a sorting net 18 stretched on the swinging frame 12 through which the wind blows upward, a feeding device 31 for supplying grains to the sorting net 18, and the sorting net 18 The rocking mechanism that reciprocally rocks the , The sorting net 1
8, one side in the front-rear direction is the supply side 19 and the other side is the discharge side 20.
In addition, one side in the left-right direction has a substantially quadrangular shape with the upside 21 on the other side and the other side on the downside 22, and the supply side 19 is higher than the discharge side 20 and the upside 21 is higher than the downside 22 and tilted in both front, rear, left and right directions. In the grain selecting apparatus, since the sorting net 18 has a superposed structure of the upper net 23 and the punched perforated plate 25, it is possible to sort various grains. (B) Since the weir plates 34, which are long in the left-right direction, are arranged on the upper surface of the upper net 23 at a desired number of intervals and are fixed by the spot welding 34a, the entire surface can be uniformly distributed and can be efficiently selected. . (C) Since the reinforcing metal fittings 25a that are long in the left-right direction are arranged at a predetermined number of intervals on the lower surface of the punched perforated plate 25, and the metal fittings 25a are fixed by spot welding 25b,
The punched perforated plate 25 can be made flat. D. Since the upper net 23 and the punched perforated plate 25 are superposed on each other and spot welded 25c at the portion of the dam plate 34 and the crosspiece 25a to integrally fix them, the manufacturing is easy. .

[Brief description of drawings]

FIG. 1 is a vertical sectional side view.

FIG. 2 is a vertical sectional front view.

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 cross-sectional view in which a dam plate is fixed to the upper surface of the upper net.

FIG. 6 is a cross-sectional view in which a crosspiece is fixed to the lower surface of a punched perforated plate.

FIG. 7 is a cross-sectional view in which FIGS. 5 and 6 are polymerized and fixed.

[Explanation of symbols]

1 ... Fixed case, 2 ... Wind tunnel, 3 ... Windmill, 4 ... Suction port, 5
... Blowout port, 6 ... Wind wheel shaft, 7 ... Passive pulley for wind turbine shaft, 8
... Drive shaft, 9 ... Eccentric wheel, 10 ... Rod, 11 ... Passive pulley of drive shaft, 12, 12a ... Wind tunnel and swing frame, 13 ...
Shaft, 14 ... Inclined swing support bar, 15 ... Motor, 16 ... Drive pulley, 17 ... Belt, 18 ... Sorting net, 19 ... Supply side, 20 ... Discharge side, 21 ... Swing up side, 22 ... Swing down side, 23
... upper net, 24 ... air hole, 25 ... punched perforated plate, 25a ... crosspiece, 25b, 25c ... spot welding, 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 ... Dam plate, 34a ... Spot welding, 35 ... Adjusting screw, 36 ... Suction port, 37 ... Waste rice sorting plate, 38 ... Bottom Net, 3
9 ... Waste rice flow plate, 40 ... Clogging removal ball, 41 ... Partition bar, 42 ... Extraction gutter, 43 ... Punched perforated plate, a ... Brown rice, b ...
Scrap rice.

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 net 18 that blows the wind upwards, a supply device 31 that feeds grain onto the sorting net 18, and a swing mechanism that reciprocally swings the sorting net 18 in the left-right oblique up and down directions. The net 18
The one side in the front-rear direction is the supply side 19, the other side is the discharge side 20, the 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 higher than the discharge side 20. Swinging 2
1 is a grain sorting apparatus which is higher than the swaying side 22 and is inclined in both front, back, left and right directions. In the sorting net 18, the weir plates 34, which are long in the left and right direction, are arranged on the upper surface of the upper net 23 at a desired number of around. And the weir plate 34 is fixed by spot welding 34a, and a crosspiece 25a for reinforcement, which is long in the left-right direction, is arranged on the lower surface of the punched perforated plate 25 with a desired number of front and rear portions spaced apart by spot welding 25b. The upper metal net 23 and the punched perforated plate 25 are superposed on each other with the fixed bracket 25a fixed, and the dam plate 34 and the bracket 25a are superposed.
Grain sorting device fixed by spot welding 25c at and part.