JP2000167421A - Hulling and sorting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent paddy from being incorporated into an unpolished rice product discharged from an unpolished rice discharge port by controlling shutters so that they are closed when that the quantity of paddy in a paddy feeding hopper or the quantity of mixed rice in a mixed rice tank becomes a prescribed one or less. SOLUTION: Based on a detection signal of a mixed rice sensor 76, whether there is the necessary minimum quantity of mixed rice in a mixed rice hopper part 66 or not is judged. When the negative judgement is made, that normal sorting cannot be performed is judged. and a paddy feeding shutter 18, a mixed rice feeding shutter 72, and an unpolished rice discharge shutter 138 are once closed to circulate the mixed rice or the like in the machine. On the other hand, when the positive judgement is made, based on a detection signal of a paddy sensor 22, whether paddy remains in a paddy feeding hopper 14 or not is judged. When the negative judgement is made, that normal sorting cannot be performed is judged, like the case of the mixed rice hopper 66, the shutters 18, 72, 138 are once closed to circulate the mixed rice or the like in the machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hulling sorter for hulling and sorting supplied paddy and extracting brown rice.

[0002]

2. Description of the Related Art A general hulling sorter includes a hulling unit into which paddy is thrown, a hulling unit to hug the paddy sent from the hulling unit, and a hulling unit. A storage unit for storing mixed rice of brown rice and paddy sent from the unit,
A sorting unit that sorts the mixed rice sent from the storage unit into brown rice, paddy and mixed rice, and takes out the brown rice sorted in the sorting unit.

The paddy input section has a paddle hopper section for supplying paddy to the paddy section.

[0004] The hulling unit is provided with a pair of hulling rolls, and the hulling rolls are set to a predetermined gap size,
During this time, the paddy is passed. The pair of hulling rolls have different rotational speeds (linear speeds) from each other (for example, 1000 rpm for one and 1200 rpm for the other). It has been removed.

[0005] All of the rice (husked rice) that has passed through the pair of hulling rolls does not become brown rice, and part of the rice remains as unhulled rice.
It becomes a mixed rice state in which brown rice and paddy are mixed. Rice husk can be sorted by the suction power of the rice husk discharge blower,
Mixed rice must be sorted separately by the sorting section.

[0006] The storage unit is provided with a tank for storing mixed rice sent from the hulling unit and mixed rice returned from the sorting unit. From this tank, the mixed rice is stabilized in the sorting unit by a predetermined amount. It is configured to be supplied in a state. If the mixed rice is not supplied stably, the sorting performance of the sorting unit will deteriorate.

[0007] The sorting section is provided with a swinging sorting plate having a surface on which a number of projections having a substantially triangular cross section are formed by embossing. The sorting plate is swung right and left in a slightly inclined state to mix rice. Is selected. That is, due to the difference in specific gravity between the brown rice and the paddy, the brown rice becomes the lower layer and the rice becomes the upper layer. The lower brown rice is moved to one position by the protrusions, the upper rice paddy is not interfered by the protrusions, moved to the position opposite to the brown rice, and the mixed rice is moved to an intermediate position. To be separated and sorted.

The unhulled rice is returned to the upstream side of the hulling roll, the mixed rice is returned to the upstream side of the swing sorting unit, and the unpolished rice is discharged from the unpolished rice outlet and taken out of the apparatus.

Here, when the amount of the paddy or the mixed rice stored in the paddy supply hopper or the mixed rice tank becomes small, the stable supply of the mixed rice onto the oscillating sorting plate becomes impossible, and the mixing on the oscillating sorting plate becomes impossible. In some cases, the thickness of rice becomes uneven, making it impossible to perform accurate sorting. If this is left unchecked, the unpolished rice will be discharged from the unpolished rice outlet together with the unpolished rice, which is not preferable.

[0010] In view of the above facts, the present invention provides a hulling sorter capable of realizing accurate sorting with simple control and preventing paddy from being mixed into brown rice products discharged from the brown rice outlet. That is the purpose.

[0011]

Means for Solving the Problems An invention according to claim 1 is a paddy input section provided with a paddy supply hopper for storing paddles to be supplied, and a paddy amount for detecting the amount of paddy in the paddy supply hopper. Detection means, a hulling unit for hulling the paddy sent from the paddy supply hopper, and a storage unit including a mixed rice tank for storing mixed rice of brown rice and paddy sent from the hulling unit, Mixed rice amount detecting means for detecting the amount of mixed rice in the mixed rice tank, a sorting unit for sorting mixed rice sent from the storage unit into brown rice, paddy and mixed rice, and sorted in the sorting unit A brown rice discharge shutter for taking out the brown rice that has been removed from the apparatus, and when the amount of paddy in the paddy supply hopper is detected to be equal to or less than a predetermined value by the paddy amount detecting means, or the mixing by the mixed rice amount detecting means. Check that the amount of mixed rice in the rice tank Upon detection of a, and a, and brown rice discharge shutter control means for controlling to close the brown rice discharge shutter.

[0012] According to a second aspect of the present invention, in the first aspect of the invention, the brown rice discharge shutter control means is configured to supply new paddy into the paddy supply hopper by means of the paddy amount detection means. When it is detected that the amount of paddy in the hopper has exceeded a predetermined value, or when it has been detected by the mixed rice amount detection means that the amount of mixed rice in the mixed rice tank has exceeded a predetermined value, the brown rice discharging shutter is turned off. It is characterized by being controlled to open.

According to a third aspect of the present invention, when the amount of the paddy in the paddy supply hopper is detected to be equal to or less than a predetermined value by the paddy amount detecting means, or the mixed rice tank is detected by the mixed rice amount detecting means. It is characterized in that it further comprises a notifying means for notifying when it is detected that the amount of mixed rice in the container has fallen below a predetermined value.

According to the first aspect of the present invention, the brown rice discharge shutter control means detects when the amount of paddy in the paddy supply hopper has become less than a predetermined value by the paddy amount detecting means, or When the amount of mixed rice in the mixed rice tank is detected by the amount detection means to be equal to or less than a predetermined value, the brown rice discharge shutter is controlled to be closed,
When the mixed rice on the oscillating sorting plate became small and accurate sorting could not be performed, brown rice was not discharged. Thereby, it is possible to prevent a problem that mixed rice is mixed with brown rice as a product.

According to the second aspect of the present invention, in the brown rice discharge shutter control means, new paddy is put into the paddy supply hopper by the paddy amount detection means, and the amount of paddy in the paddy supply hopper is set to a predetermined value. When it is detected that the amount of mixed rice in the mixed rice tank is equal to or larger than a predetermined amount by the mixed rice amount detecting means, the brown rice discharging shutter is controlled to be opened. I have. This allows
As soon as a stable amount is stored in the paddy supply hopper or the mixed rice tank, the operation can be shifted to the normal operation, so that the workability can be improved.

According to the third aspect of the present invention, the notifying means detects when the amount of paddy in the paddy supply hopper has become less than or equal to a predetermined value by the paddy amount detecting means, or when the amount of mixed rice is detected by the mixed rice amount detecting means. When it is detected that the amount of mixed rice in the mixed rice tank has become equal to or less than a predetermined value, notification using auditory sense such as a buzzer or sound, notification using vision such as a lamp,
Alternatively, since the worker can be notified by both of them, even if the worker is performing another work at a remote place, the paddy can be quickly supplied.

As the notification means, an operator may carry a receiver (including a wireless telephone such as a portable telephone) and transmit the notification contents to the receiver from the device side.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 3 show a hulling sorter 10 according to the present embodiment. Note that FIG. 3 schematically shows a transport system for hulling sorting, which is slightly different from the actual structure.

In the hulling sorter 10, by inputting the paddy and operating the operation switch 12 (see FIGS. 4 and 5), the subsequent steps are automatically executed, and the input paddy becomes brown rice. Is discharged.

The chaff is fed into a chaff supply hopper 14 as a chaff input section opened on the upper surface of the chaff sorting apparatus 10. The paddy supply hopper 14 has a rectangular opening and a tapered shape that gradually narrows toward the bottom. At the bottom of the paddy supply hopper 14, a rectangular supply port 1 is provided.
6 is provided, and the paddy flows into the inside of the hulling sorter 10 sequentially from the supply port 16.

The supply port 16 has a paddy supply shutter 1
8 are provided. The paddy supply shutter 18 can be opened and closed by the driving force of the paddy supply motor 20 (see FIG. 11), and is in a closed state when the paddy is first put into the paddy supply hopper 14. A predetermined amount of paddy is put into the paddy supply hopper 14 and the operation switch 12
Is controlled to be in an open state when is operated.

Here, the degree of opening of the paddy supply shutter 18 by the paddy supply motor 20 is controlled in accordance with a signal from a mixed rice sensor 76 disposed in a mixed rice tank 62 described later, and passes through the supply port 16. The amount of paddy to be used can be limited. The opening degree of the paddy supply shutter 18 is detected by a rotary sliding resistor 21 connected to a rotation shaft of the paddy supply shutter 18. The rotary sliding resistor 21 is a part of a component of the volume circuit 23. The volume circuit 23 outputs a voltage based on a resistance change of the rotary sliding resistor 21. For this reason, the opening degree of the paddy supply shutter 18 can be recognized by the voltage value.

The paddy supply hopper 14 has a paddy sensor 2
2 is attached, and it is possible to detect whether or not the paddy is present in the paddy supply hopper 14.

The paddy that has flowed into the inside of the hulling sorting device 10 from the supply port 16 is first sent to a hulling chamber 24 as a hulling unit. The hulling room 24 is provided with a pair of hulling rolls 26 and 28, and the paddy that has flowed into the hulling room 24 from the supply port 16 is the pair of hulling rolls 26 and 28.
28 to the closest position. In addition, the gap size of the closest position between the pair of hulling rolls 26 and 28 is standard 0.8 mm.
, And can be adjusted in units of 0.1 mm. This adjustment is made by a roll interval adjusting motor 30.

The tangents of the pair of hulling rolls 26 and 28 at their closest positions are inclined upward to the right in FIG.

Each of the pair of hulling rolls 26 and 28 has the same outer diameter. However, when the driving force of the main motor 32 is received by pulleys (not shown) having different outer diameters, the respective rotation speeds are increased. Is slightly different. That is, the hulling roll 26 located on the left side of FIG.
The hulling roll 28 located on the right side of FIG.
rpm. For this reason, at the point of contact between the two at the closest position, the rice is relatively rotated, and the thickness of the paddy entering the closest position is larger than the gap size, so that the paddy is rubbed and so-called hulling is performed.

Here, the reason why the standard gap size is set to 0.8 mm is derived as an optimum value based on the particle size of the currently mainstream rice. If it changes, this standard value also needs to be changed.

The reason why the adjustment can be made in units of 0.1 mm is based on past data that has been experimentally obtained. According to the past data, hulling is performed for rice, which is currently the mainstream. In this case, it was found that the diameter of the hulling rolls 26 and 28 was abraded and cut by 0.05 mm every 15 minutes.

Therefore, in the present embodiment, the operation is performed with the standard gap size (0.8 mm) as an initial value, and thereafter, the roll gap is moved by 0.1 mm every predetermined time (15 minutes) so as to narrow the roll gap size. .

As a result, apparently, the dimension of the roll gap can always be kept constant, and the variation in the de-aeration rate can be suppressed.

In the following, the paddy is a pair of hulling rolls 2
The rice that has been hulled by 6, 28 is called hulled rice, which contains a large amount of brown rice that has been hulled, a small amount of rice that has not been hulled, and pity Rice), and rice husks.

A diffusion plate 34 is provided on the side of the pair of hulling rolls 26 and 28 on the hulling rice discharge side. This diffusion plate 34
Has a role of diffusing the hulled rice discharged from the pair of hulling rolls 26 and 28 in a uniform amount from the near side to the far side in FIG.

The hulled rice diffused by the diffusion plate 34 is
First slope 36 (outer plate of suction duct 38 described later)
Is guided to the second slope 40 while sliding.
The first slope 36 and the second slope 40 have opposite inclination directions, and the transport direction of the hulled rice is changed.

An opening of one end of the suction duct 38 is disposed on the second slope 40 so as to face the second slope 40. Suction duct 3
The other end of 8 is connected to the suction port of the rice husk discharge blower 42. A guide duct 44 is attached to a discharge port of the rice husk discharge blower 42. Rice husk discharge blower 42
The main motor 32 rotates by the driving force.

The suction duct 38 has the first slope 3
A relatively light chaff that slides down the sixth and second slopes 40 is sucked and discharged to the outside through the guide duct 44.

The suction duct 38 has a structure in which two pipes are provided side by side, and the suction openings thereof are opposed to the upstream side and the downstream side of the second slope 40, respectively. Rice husk is sucked upstream of 40,
On the downstream side, pity is sucked together with the chaff. Here, the second-grain recovery passage 46 is provided in the downstream pipeline.
Is provided. As a result, pity is heavier than rice hulls, so it cannot go up in the upstream pipeline and the second slope 40
However, if it is slightly sucked up in the downstream pipeline, it falls without being able to withstand this sucking, and is guided to the second grain recovery path 46.

A screw conveyor 48 is provided at the lower end of the second grain collecting path 46, and the piti scattered in the depth direction of the hulling sorter 10 is at one end (front side in FIG. 2).
It can be collected in a central location. The screw conveyor 48 rotates by the driving force from the main motor 32.

The hulled rice that has passed through the second slope 40 is
It is guided to the third slope 50 and finally this third slope 50
First grain recovery path 52 disposed at the lowermost end of the slope 50
Of the screw conveyor 54. The hulled rice that falls into the first grain collection path 52 is a state in which chaff and pity are removed and only a large amount of brown rice and a small amount of rice are mixed (hereinafter referred to as mixed rice). The screw conveyor 54 also rotates by the driving force of the main motor 32.

The screw conveyor 54 is divided into two parts in the axial direction (front side in FIG. 2: rear side = approximately 2: 8), and the directions of the screws are set so that the feeding directions are opposite to each other. I have.

The mixed rice falling from the third slope 50 falls on the screw on the far side in FIG. 2 and is transported to the far end on the paper in FIG. Here, what falls on the screw on the near side of the paper surface of FIG. 2 is the paddy that is sorted by the sorting unit 56 described later and needs to be hulled again, and the paddy from the sorting unit 56 is returned and falls. ing. The paddy that has fallen to the near side is collected at the short end of the paper of FIG. 2, is raised coaxially with the screw conveyor 54, and is raised by the lower 33 that is driven to rotate by the driving force of the main motor 32, and is returned to the return duct 58.
And is returned to the upstream side of the pair of hulling rolls 26 and 28 via.

The mixed rice collected at the rear end of the paper is conveyed to the uppermost part of the hulling sorter 10 by a mixed rice elevator 60 driven by the driving force of the main motor 32, Is fed to a mixed rice tank 62 serving as a storage section located at a position indicated by the arrow.

The mixed rice tank 62 includes a box-shaped casing 6.
The mixed rice covered with the mixed rice 4 and fed by the mixed rice elevator 60 is accumulated in a mixed rice hopper 66 formed at the bottom of the tank. The mixed rice hopper 66 has a tapered shape in which the side walls gradually approach, and the accumulated mixed rice is collected at a supply port 68 at the lowest position of the mixed rice hopper 66. The mixed rice hopper 6
One end of the overflow pipe 70 is opened in the middle of the inclined surface of the mixed rice 6 so that a predetermined amount or more of mixed rice is mixed with the mixed rice tank 6.
In the case where the rice is accumulated in a part 2, a part of the mixed rice is returned to the upstream side of the pair of hulling rolls 26 and 28 in the hulling chamber 24 through the overflow pipe 70.

A mixed rice supply shutter 72 is attached to a supply port 68 at the bottom of the mixed rice hopper 66. The mixed rice supply shutter 72 can be opened and closed by the driving force of a mixed rice supply motor 74, and the mixed rice sensor 7 provided in the mixed rice tank 62.
In response to the signal from 6, the rice is controlled to be closed when the mixed rice in the mixed rice tank 62 is less than a predetermined amount, and to be opened when the mixed rice is more than a predetermined amount. The degree of opening of the mixed rice supply shutter 72 can be arbitrarily set in advance, so that the amount of mixed rice passing through the supply port 68 can be limited.

The mixed rice sensor 76 has a plate 80 mounted on a shaft 78 having one end rotatable. The plate 80 is provided at a position where the pressing amount changes according to the amount of the mixed rice reaching the mixed rice hopper 66. Since the plate 80 rotates about the shaft 78 in response to this pressing, a correlation can be provided between the amount of mixed rice and the rotation angle of the shaft 78.

As shown in FIG. 6, the shaft 78 protrudes outside the casing 64 of the mixed rice tank 62 (the far side in FIG. 2). One end of a lever 82 is attached to the shaft 78, and the lever 82 is rotated by rotation of the shaft 78.

One end of a link rod 84 is attached to the other end of the lever 82. The other end (lower end) of the link rod 84 is connected to one end of a lever 86 having substantially the same shape as the lever 82. Have been. The other end of the lever 86 at the lower end is fixed to the rotating shaft 88A of the rotating sliding resistor 88. Therefore, when the plate 80 rotates, the rotation can be recognized as the rotation of the rotating shaft 88A of the rotary sliding resistor 88 via the lever 82, the link rod 84, and the lever 86.

That is, by forming an electric circuit (volume circuit 90 (see FIG. 11)) in which the rotary sliding resistors 88 are connected in series, a voltage that changes due to a resistance change of the rotary sliding resistors 88 is detected. The rotation angle of the plate 80 can be determined based on the voltage value.

The mixed rice hopper 6 of the mixed rice tank 62
The mixed rice that has passed through the supply port 68 at 6
You will be guided to

A distribution plate 92 is provided at the top of the sorting section 56. The distribution plate 92 is inclined downward to the right in FIG. 2, and a substantially step-like or substantially triangular projection (not shown) whose right side is upright and the left side is gently inclined is countlessly continuous on its surface. Is formed. This distribution plate 92 is provided in the sorting section 5.
6 is simultaneously swung to the left and right in FIG. 2, while the mixed rice dropped from the supply port 68 to the left end of the distribution plate 92 is pushed out on the right side of the projection while gradually moving to the right. , And is scattered over the entire surface of the distribution plate 92. A leveling plate 94 is attached to the ceiling near the right end of the distribution plate 92, and has a function of flattening the mixed rice dropped on the distribution plate 92.

At the most downstream end of the distribution plate 92, six distribution ports 96 are arranged from the near side to the far side in FIG.

The distribution ports 96 are independently communicated with six rectangular swing sorting plates 100 which are stacked and arranged at predetermined intervals below the distribution plate 92, respectively. Can be evenly distributed and supplied to each swinging sorting plate 100.

The swing sorting plate 100 has one side in the left-right direction (the right side in FIG. 2) is high and the other side (the left side in FIG. 2) is inclined low, and one side in the front-rear direction (the paper surface in FIG. 2). The rear side is higher and the other side (the front side in FIG. 2) is lower and inclined. The inclination in the front-rear direction is fixed, and the inclination in the left-right direction is changed by the driving force of the inclination angle motor 101. In addition, the inclination angle in the front-back direction is 4 °, and the standard inclination angle in the left-right direction is 5 °.

Here, the change in the inclination angle in the left-right direction is transmitted to the rotary sliding resistor 104 via the link rod 102 as shown in FIGS. Therefore, similarly to the plate 80 applied as the mixed rice sensor 76 in the mixed rice tank 62, the tilt angle of the swinging selection plate 100 is changed by the voltage value (volume circuit 106 ( 11)).

In the selecting section 56, the rotational driving force of the main motor 32 is converted into a reciprocating driving force by a link mechanism, and the reciprocating driving force is used to swing right and left in FIG.

FIG. 7 shows the structure of a crank mechanism for swinging (vibrating) the sorting section 56.

A pair of brackets 400 is provided at the bottom edge of the side at the inclined high position (the right side in FIG. 7), and the pair of brackets 400 is supported by the swing connection shaft 402. In FIG. 7, one bracket 400 on the far side of the drawing is omitted. On the other hand, a pair of brackets 404 are provided at the bottom edge on the side set to the inclined lower position (the left side in FIG. 7), and the pair of brackets 404 are supported by the swing connection shaft 406. In FIG. 7, one bracket 404 on the back side of the drawing is omitted.

The swing connection shaft 4 on the side at the inclined high position
A swing arm 408 is connected to 02, and the lower end of the swing arm 408 is swingably supported by a support shaft 410. That is, the edge of the sorting portion 56 on the side at the inclined high position is supported by the swing arm 408 that is swingably connected to the swing connection shaft 402.

On the other hand, a support arm 412 is connected to the swing connection shaft 406 on the side at the inclined lower position.
The lower end of the support arm 412 is connected to one end of a bell crank 416 by a support shaft 414. The bell crank 416 is rotatably supported by a support shaft 418. That is, when the bell crank 416 is in a fixed state (if it is not moved), the sorting unit 56 and the swing arms 408 and 412 supporting the same form a so-called parallel link mechanism as a whole. And support arm 4
By oscillating while 12 are parallel to each other,
The selection unit 56 is configured to swing (vibrate) in the left-right direction in FIG.

One end of a connecting shaft 420 is connected to an intermediate portion of the swing arm 408, and the other end of the connecting shaft 420 is connected to a crank shaft 422. Therefore, the rotation of the crankshaft 422 causes the swing arm 408 to swing (vibrate) in the left-right direction in FIG.
This is a configuration that can be performed. The driving force of the main motor 32 is transmitted to the crankshaft 422 of the crank mechanism.

On the other hand, the other end of the bell crank 416 to which the lower end of the support arm 412 is connected has a feed screw 42
4 are provided. The feed screw portion 424 is operated by the tilt angle motor 101. In other words, the feed screw 424 is operated by the tilt angle motor 101 to rotate the bell crank 416, whereby the support arm 4 is rotated.
This is a configuration in which the height position of the swing connection shaft 406 to which 12 is connected is changed.

Therefore, the inclination angle motor 101
Is controlled, the inclination angle of the sorting unit 56 can be changed (adjusted).

A tension clutch mechanism (not shown) is provided in the middle of the driving force transmission system from the main motor 32.
The clutch mechanism is provided with a swing control motor 108.
Is controlled by the driving force. That is, the tension arm connected to the swing control motor 108 engages with and separates from the transmission belt wound around the main motor 32 and the pulley of the selection unit 56, thereby engaging and disengaging the clutch to swing. Can be switched.

As shown in FIG. 8, the swing sorter plate 100 has an infinite number of protrusions 98 having a substantially triangular cross section, the right side of which is erected and the left side is slightly inclined, formed on the entire surface by embossing. .

The mixed rice distributed by the distribution port 96 falls to the highest part (the right rear part in FIG. 2) on each swing sorting plate 100. The drop position (a region extremely small compared to the entire surface area of the oscillating sorting plate 100) is flattened to improve the sliding of the mixed rice, and the mixed rice quickly spreads over the entire surface of the oscillating sorting plate 100. Is helping that.

Here, the mixed rice supplied to the swing sorting plate 100 is sorted into brown rice, paddy and mixed rice by swinging the swing sorting plate 100 right and left.

That is, the brown rice having a high specific gravity sinks below the mixed rice layer and is sequentially pushed to the right side of the rocking sorter plate 100 by being pushed out by the projections 98. And moves down to the left side of the oscillating selection plate 100 in order to slide down on the surface of the layer.

Due to this difference in the degree of migration, brown rice is concentrated in the right region, mixed rice is concentrated in the central region, and paddy is concentrated in the left region on the swinging sorting plate 100, so that the rice is sorted (separated). ing.

This phenomenon gradually appears clearly while flowing down naturally from the back side (supply side) of the swing sorting plate 100 to the front side. Thus, the brown rice, the paddy, and the mixed rice (hereinafter referred to as “mixed rice”) on the oscillating selection plate 100 drop to the bottom plate portion 110 from the near side of the oscillating selection plate 100 of each stage (six pieces).

Here, a fixed partition plate 112 and a movable partition plate 114 are disposed at the end of the swing sorting plate 100 on the falling side (the front end in FIG. 2). Fixed partition plate 112
Is located near the boundary between the mixed rice and the paddy, and the paddy that has fallen from the left side of FIG. 2 with respect to the fixed partition plate 112 passes through the paddy return port 116 located at the leftmost end of the bottom plate portion 110. Paddy return hopper 1 provided on the near side of FIG.
17.

The screw conveyor 5 in the first grain collection path 52
4 is divided into two as described above, and drops into the screw on the near side of the drawing of FIG. 2, so that the paddy accumulated by this screw is lifted up by the thrower 33, It will be returned to the upstream side of the hulling rolls 26 and 28.

On the other hand, the movable partition plate 114 is located near the boundary between brown rice and mixed rice, and has a branch guide portion 114B in which the lower end of the partition portion 114A is branched in a substantially inverted Y-shape.
The brown rice and the mixed rice separated by the upper partition 114A can be reliably separated.

The bottom plate 110 is provided with two outlets, one of which is a brown rice outlet 118 and the other is a mixed rice outlet 120. Here, the brown rice guided by the right branch guide 114B falls into the brown rice discharge port 118, and the mixed rice guided by the left branch guide 114B falls into the mixed rice discharge 120.

Here, the movable partition plate 114 is screwed to a shaft 122 in which a male screw is formed at a part thereof, the axial direction of which is the left-right direction of the swing sorting plate 100. The shaft 122 is prevented from moving in the axial direction, and is rotated by the driving force of the partition motor 124.
Therefore, the partition motor 124 is driven to drive the shaft 12.
2 rotates, the movable partition plate 11 according to the rotation direction.
4 can be moved in the left-right direction of FIG. Note that the amount of movement in the left-right direction is detected by the rotary sliding resistor 123 in a state converted into rotary motion. Thus, the position of the movable partition plate 114 can be recognized based on the voltage value output from the volume circuit 125 including the rotary sliding resistor 123. Although not shown, the configuration is substantially the same as the connecting mechanism including the rotary sliding resistor, the lever, and the link rod shown in FIGS.

The position of the movement of the movable partition plate 114 is determined by the degree of sorting at the time of brown rice sorting by swinging of the swing sorting plate 100. That is, depending on the type of rice and the surrounding environment, etc., there is a case where sorting is easy or difficult, and in a case where sorting is easy, the area for dropping brown rice is expanded, so that the movable partition plate 114 is moved to the left in FIG. Move.
On the other hand, when sorting is difficult, the area where brown rice falls is narrowed, so that the movable partition plate 114 is moved to the right in FIG.

Rotation fins 126 and 128 (see FIG. 3) for confirming the drop are respectively provided near the left and right ends in FIG. 2 in the falling flow path which falls from just before the uppermost swing sorting plate 100. Have been. Therefore, when the mixed rice or the like falls from the swing sorting plate 100, the mixed rice or the like comes into contact with the fins, and the rotating fins 126 and 128 can be rotated.

As shown in FIG. 9, this rotating fin 12
6 and 128, a cylindrical shaft portion 126 serving as a rotation shaft center is provided.
A, 128A, and eight fins 126B, 128B extending radially (radially) at equal pitches from the outer periphery of the shaft portions 126A, 128A.
A permanent magnet 130 is attached to the leading end of the 6B, 128B in the extending direction. The permanent magnet 130 may be attached to the tip of all the fins 126A and 128B, but in this embodiment, every other fin 126B,
28B. In any case, the permanent magnet 13
It is preferable that the mounting positions of the fins 126 are equal pitches around the shaft portions 126A and 128A.
B, 128B, the number of fins 126B, 128B to which the permanent magnet 130 is attached is one, two,
Four or eight sheets can be selected.

At the center of both end surfaces of the shaft portions 126A and 128A, small diameter circular grooves 126C and 128C are provided, and a bearing pin 131 having a tapered tip is inserted.

The bearing pin 131 has a male screw 1 at its base.
35 are formed, and penetrate through screw holes provided in leg plates 133A of the bracket 133 which are parallel to each other. A nut 137 is screwed into the male screw 135 projecting outward from the leg plate 133A.
Are fixed so that the axis of the axis part coincides with the axis of the shaft parts 126A and 128A.

The bracket 133 includes the rotating fin 126,
It is arranged so as to cover three sides of 128. The rotating fins 126 and 128 are disposed at the center positions between the leg plates 133A. Therefore, a predetermined interval (dimension) corresponding to the length of the bearing pin 131 is provided between the end surfaces of the shaft portions 126A and 128A and the leg plate 133A. (10 mm or more).

The distance (10 mm) is set such that mixed rice or the like is sandwiched between the rotating fins 126 and 128 and the leg plate 133.
The rotation fins 126 and 128 are provided to prevent operation (rotation) failure from occurring. For this reason, the rotating fins 126 and 128 are always kept in a smoothly rotatable state.

A proximity switch 132 which is close to the permanent magnet 130 when the rotary fin rotates is attached to the base 133B of the bracket 133.

For this reason, when the rotating fins 126 and 128 rotate, the proximity switch 132 repeatedly turns on and off, and can output a pulse signal.

The tilt angle of the swing sorting plate 100 is controlled by the pulse signals of the two rotating fins 126 and 128. That is, both rotating fins 12
The tilt angle is controlled so that 6, 128 rotate at the same rotational speed. The rotation of both the rotating fins 126 and 128 at the same rotation speed causes the mixed rice to spread uniformly on the rocking sorter plate 100 (in other words, the rocking sorter plate 1).
(The uniform thickness of the mixed rice on the surface of No. 00 is uniform.) And the rocking sorting plate 100 in this state has the best inclination angle in the sorting performance.

A screw conveyor 134 is provided below the sorting unit 56, that is, at a position opposite to the openings of the brown rice outlet 118 and the mixed rice outlet 120.
The screw conveyor 134 is adapted to be rotated by the driving force of the main motor 32, and its axis is directed in the left-right direction in FIG.
36 are provided. The left and right screws are set to be conveyed in directions opposite to each other with the partition plate 136 as a boundary.

Therefore, the mixed rice discharged from the mixed rice discharge port 120 is conveyed leftward in FIG. 2 by the screw on the left side of the screw conveyor 134, and is fed to the screw conveyor 54 (FIG. To the far side of the drawing). As a result, this mixed rice
The rice is returned to the mixed rice tank 62 again by the mixed rice lifting machine 60, and re-sorting is performed in the sorting unit 56.

On the other hand, the brown rice discharged from the brown rice discharge port 118 is conveyed rightward in FIG. 2 by the screw on the right side of the screw conveyor 134.

Here, a brown rice discharge shutter 138 is provided at the brown rice discharge port 118, and the brown rice discharge motor 1
It is opened and closed by the driving force of 40. For a predetermined time (ie, a transition period) immediately after the operation of the hulling sorter 10 according to the present embodiment is started, sorting by the sorting unit 56 is not completely performed, and mixing is performed even at the right end of the swing sorting plate 100 in FIG. Rice may be present. For this reason, during the transition period, the brown rice discharge port 118 is closed by the brown rice discharge shutter 138, and all the rice is guided to the mixed rice discharge port 120. When the transition period ends, the brown rice discharge shutter 138 is automatically opened, and the brown rice is discharged from the brown rice discharge port 118. The opening degree of the brown rice discharging shutter 138 is detected by the rotary sliding resistor 142, and the volume circuit 14
4 can be recognized.

At the right end of the screw conveyor 134, a screwer 1 is integrated with the screw conveyor 134.
46 are provided. A brown rice discharge duct 148 is provided in a direction in which brown rice is sent out by the lower 146. The upper part of the brown rice discharge duct 148 is bent in a substantially U-shape. After the bending, the dust collection duct 1
One end of 50 is communicated. This dust collection duct 1
The other end of 50 is located in the vicinity of the first slope 36 in the hulling chamber 24 and removes dust from the chaff discharge blower 4.
It can be sucked by the suction force of No. 2 and discharged to the outside together with the rice husk.

The brown rice climbs up in the brown rice discharge duct 148 by the throwing force of the thrower 146, and is discharged from the brown rice outlet 152 after passing through a substantially U-shaped guide path.
At this time, since the dust mixed into the brown rice is sucked by the dust collection duct 150, the brown rice outlet 152
Will only emit brown rice.

A cover 154 is provided at the opening of the brown rice outlet 152. This lid 154 is
It can be held in either the closed state or the open state, and even in the closed state, the rice is pressed by the discharging force of the brown rice and the brown rice can be discharged. Therefore, this lid 1
By closing 54, invasion of small animals (rats, etc.) from the outside that feeds on brown rice can be prevented.

FIGS. 4 and 5 show the operation display panel 200 arranged in front of the hulling sorter 10. FIG.

The operation display panel 200 has a power switch 202, an operation switch 12, a discharge switch 204, and a stop switch 206 arranged in a horizontal direction on the upper surface thereof. Guidance signs 208, 210, 21 in the form of seals
2 are installed.

On the guidance display panel 208 of the power switch 202, the numbers “1” and “power on” are printed above the power switch 202, and one LED 214 is provided between them. That is, this indicates that this is the first switch to be operated, and the LED 214 is turned on when the hulling sorter 10 is started by operating the power switch 202, and is turned off when it is stopped.

On the guidance display plate 210 of the operation switch 12, the numbers "2", "in preparation" and "in operation" are printed above the operation switch 12, and eight (4)
(A pair of LEDs) 216 and 218 are provided.

In other words, this indicates that this is the second switch to be operated (after starting by operating the power switch 202), and the status after the operation is started by operating the operation switch 12 is recognized by the number of lighting of the LEDs 216, 218 I can do it. That is, the four LEDs 21 on the left side of FIG.
Reference numeral 6 corresponds to "under preparation", and the LED 216 on the left side is sequentially turned on with the passage of time, so that it can be recognized that preparation is in progress. Also, the four right LEDs 21
8 corresponds to “driving”, and the LED 2 on the left side following the LED 216 corresponding to “during preparation” with the passage of time.
It lights up sequentially from 18 and it can be recognized that driving is progressing. The transition period from when the operation switch 12 is operated to when all the LEDs 216 and 218 are turned on is a transition period.

On the guide display plate 212 of the discharge switch 204, numerical values "3" and "Remaining rice processing" are printed above the discharge switch 204, and three LEDs are interposed between them.
220 are provided.

That is, this indicates that the switch is the third one to be operated (during operation), and the status when the operation is ended by operating the discharge switch 204 is indicated by LED2.
Recognition can be made with 20 lighting numbers. That is, the LEDs are sequentially lit from the left LED 220 in FIG. 4, and it can be recognized that the process is completed.

When the stop switch 206 is operated during normal operation, the stop switch 206 is interrupted in accordance with a predetermined process called an interruption mode (see FIG. 14A), and is operated again at the time of the interruption. Completely clear,
Driving ends.

Also, there is no paddy in the paddy supply hopper 14,
Even when the mixed rice hopper 14 has no mixed rice and is operated after automatic stop, the same processing as when the stop switch 206 is operated is performed (see FIG. 12).

As described above, the rice hulling sorting apparatus 10 can be automatically operated by four switches of power supply, operation, discharge, and stop. On the other hand, when an expert or the like wants to perform an arbitrary manual operation according to his / her preference without relying on the automatic operation, it is possible to open the lid 222 described below and manually operate individual switches and the like. ing.

At the bottom of the operation display panel 200, the lid 2
22 are provided. The lid 222 can be opened and closed with a lower long side serving as a rotation axis.

When the cover 222 is opened, a display 224, a manual operation unit 226, and a dial setting unit 228 are provided inside the cover 222, as shown in FIG.

The display unit 224 includes a three-digit seven-segment display unit 230 and three lamps 23 for indicating display contents.
2, 234 and 236 and a display changeover switch 238 are provided. The lamp 232 indicates the current value of the main motor 32, the lamp 234 indicates the inclination angle of the swinging selection plate 100, the lamp 236 indicates the position of the movable partition plate 114, and the operation of the display changeover switch 238 is performed. Each time, the display content of the display unit 230 is changed to the instruction content of each lamp.

In the manual operation section 226, switches operated mainly when each motor is manually operated are arranged. At the left position, the gap between the hulling rolls 26 and 28 at the start of operation is set to the predetermined initial gap size position (standard gap size = 0.8 mm)
And an automatic roll switch 226B that automatically controls the gap between the hulling rolls 26 and 28 to be reduced by a predetermined dimension (0.1 mm) every predetermined time (15 minutes) so as to compensate for the wear. Is provided.

In the center position, a main motor switch 226C for driving the main motor 32 and a swing control motor 108 for operating a clutch mechanism for swinging the selection unit 56 are provided.
226D, a rice shutter switch 226E for driving the rice supply motor 20 for opening and closing the rice supply shutter 18, and a mixed rice supply motor 74 for opening and closing the mixed rice supply shutter 72. Mixed rice shutter switch 226F and brown rice discharging motor 14 for opening and closing brown rice discharging shutter 138
A circulation / discharge switch 226G for driving 0 is provided.

In the right position, a roll wide switch 240 for widening the gap between the hulling rolls 26 and 28, a roll narrow switch 242 for narrowing the gap, and a separation plate loosening switch 244 for loosening the inclination angle of the swinging selection plate 100. And a selector switch 246 for sharpening the angle.

The dial setting section 228 has an opening degree of the mixed rice supply shutter 72 (a supply amount of the mixed rice to the selection section 56).
A mixed rice supply amount adjustment dial 248 for setting the
A partition position adjusting dial 250 for setting a partition position of the movable partition plate 114 is provided. The setting dials 248 and 250 are both set to “standard” during the automatic operation described above, and can be changed (adjusted) in the middle as needed.

FIGS. 10 and 11 show control block diagrams applied to the hulling sorter 10 according to the present embodiment.

The controller 252 includes an 8-bit microcomputer 254. The microcomputer 254 includes a CPU 256, a RAM 258,
A bus 260 such as a ROM 260, an input / output (I / O) port 262, and a data bus and a control bus for connecting them;
64.

(Rice Supply Amount Control / Rice Supply Shutter Opening Control) As shown in FIG.
A DC servo mechanism 268 for driving the paddy supply shutter 18 via the D / A converter 266 is connected.

The DC servo mechanism 268 includes a differentiator 270
And the amplifier 272, and controls the paddy supply motor 20 which is a DC motor, and drives the paddy supply motor 20 in the forward and reverse directions according to a signal from the controller 252,
The paddy supply shutter 18 is opened and closed.

Here, the signal (plus signal) from the controller 252 and the rice feed motor 20
Rotary sliding resistor 21 whose resistance value changes according to the rotation of
(Minus signal) from the volume circuit 23 including
Is input, and the difference between these signals is the drive amount of the paddy supply motor 20. That is, the opening / closing angle of the paddy supply shutter 18 (0 ° in the closed state to 90 ° in the open state)
), The signal from the controller 252 is set as a voltage value of 0 to 5 V, and the signal from the volume circuit 23 is correspondingly set based on the rotation angle (90 °) of the paddy supply motor 20. 0 to 5V. Here, for example, when a signal of 5 V is output from the controller 252, the difference by the differentiator 270 is initially 5 (5-0).
= 5), the paddy supply motor 20 rotationally drives the paddy supply shutter 18 in the opening direction. By this rotation drive, when the voltage value from the volume circuit 23 gradually approaches 5 V and the paddy supply shutter 18 is opened, the output from the differentiator 270 becomes 0 (5-5 = 0), and the paddy supply motor 20 Stops.

Here, from the input / output port 262, a set value of the amount of mixed rice stored in the mixed rice hopper 66 is output, and is input to the differentiator 271. The differentiator 271 includes a mixed rice sensor 76, that is, a plate 8
A signal from a volume circuit 90 provided with a rotary sliding resistor 88 for detecting a rotation angle of 0 is input via an amplifier 274 and an A / D converter 276, and the difference between the signals is the opening degree of the paddy supply shutter 18. Is input to a differentiator 273 for setting. A signal for opening the paddy supply shutter 18 by 45 ° from the controller 252 is input to the differentiator 273, and the output to the D / A converter 266 is the output value of the differentiator 273.

For this reason, the paddy supply shutter 18 is
The degree of opening and closing is controlled based on the amount of the mixed rice stored in the mixed rice hopper 66 based on the open state. The signal of the mixed rice sensor 76 is also input to the input / output port 262 after A / D conversion.

(Hulling Roll Gap Size Control) Hulling Roll 2
The motors 6 and 28 are rotated by the driving force of the main motor 32. This main motor 32 is a three-phase 200V
The motor has a rating of 1.9KW. This main motor 3
2 is detected by the current detector 278 and rectified by the full-wave rectifier 280.
A / D converted by the / D converter 282 and the controller 25
2 is input to the input / output port 262. The input / output port 262 is connected to a roll interval adjusting motor 30 for adjusting the gap size between the hulling rolls 26 and 28.

In the initial stage of operation, the roll gap adjusting motor 30 widens the gap between the hulling rolls 26 and 28 once according to a signal from the controller 252, and then gradually narrows the gap. Eventually, when the hulling rolls 26 and 28 come into contact with each other, the current value rises sharply, so that it is recognized that the gap between the hulling rolls 26 and 28 has become zero, and the hulling rolls 26 and 28 are removed from here. Predetermined initial gap size position (0.
8mm). During operation, control is performed so as to narrow by a predetermined dimension (0.1 mm) every predetermined time (15 minutes).

(Movable Partition Plate Position Control) Movable Partition Plate 114
Is a standard value based on a signal from the controller 252, and a partition position adjustment diagram 25 on the operation display panel 200.
The partition position can be set by any of the arbitrary values based on 0.

That is, the partition position adjusting dial 250
Is connected to the first contact of the changeover switch 286 via the A / D converter 284. This changeover switch 286
Are connected to a signal line 288 through which the position information set in the controller 252 is transmitted. With this changeover switch 286, the partition position adjustment dial 25
When 0 is set to the standard position, the contact is switched to the second contact (usually switched by automatic setting), otherwise, it is switched to the first contact (manual setting).

The volume circuit 125 includes the movable partition plate 11
Rotary sliding resistor 12 whose resistance value changes with the movement of 4
3 and outputs a negative value to the difference unit 292 via the A / D converter 290. This differentiator 292 is connected to the common terminal of the changeover switch 286, and receives a positive value from the common terminal. Therefore, the difference device 2
92, a standard partition position information signal is input from the controller 252 when the partition position adjustment dial 250 is at the standard position, and when the partition position adjustment dial 250 is operated to any other position, the partition position A partition position information signal corresponding to the operation state is input from the adjustment dial 250. The differentiator 292 sends a signal to the partition motor 124 based on the difference between the actual position (the signal from the volume circuit 125) and the target position (the signal corresponding to the pointer value of the partition position adjustment dial 250). The partition position is changed.

(Selection Portion) The input / output port 262 is connected to a swing control motor 108 for connecting and disconnecting the main motor 32 to and from a drive transmission system for rocking the swing selection plate 100 of the selection portion 56. Thus, the swing can be executed at a predetermined timing (after a predetermined time after the operation switch 12 is pressed) in the controller 252. The swing control motor 108 does not execute the swing itself, but has a role as a clutch for determining whether or not to transmit the driving force of the main motor 32 to the selection unit 56.

(Main motor) The main motor 32 is connected to the input / output port 262, and the operation switch 1
2. The operation / stop is controlled based on the operation of the discharge switch 204 and the stop switch 206.

(Swing Sorting Plate Inclination Angle Control) Swing Sorting Plate 1
The volume circuit 106 including the rotary sliding resistor 104 whose resistance value is changed based on the tilt angle of 00 is connected to a differentiator 296 via an A / D converter 294, and the actual angle is added to the differentiator 296. (Actual value) has been entered. The differentiator 296 is connected to the input / output port 262, and receives a set angle (set value). Therefore, the difference between the set value and the actual value is output from the differentiator 296, and the tilt angle motor 101
Is controlled.

This set value (set angle) is
It is set based on the pulse signals obtained from 26 and 128.

That is, pulse signals are input from the rotary fins 126 and 128 to the input / output port 262, and the controller 252 compares the input pulses to determine the state of diffusion of the mixed rice on the swing sorting plate 100. Can be grasped. By adjusting the tilt angle of the swing selection plate 100 so that the unit pulse numbers of these two pulse signals match, the swing selection plate 1 is automatically and quickly set.
00 can be adjusted to an optimal position. Further, the present invention is also applicable to opening / closing timing control of a brown rice discharge shutter or the like.

(Mixed Rice Supply Shutter) A mixed rice supply motor 74 for opening and closing the mixed rice supply shutter 72 includes:
It is connected to an input / output port 262 via a D / A converter 75, a differentiator 77 and an amplifier 79. The differentiator 77 includes:
The input / output port 26 is provided on the operation display panel 200.
2, a signal is input from a mixed rice supply amount adjustment dial 248 connected thereto. Further, a signal from a volume circuit 93 which is connected to the rotation shaft of the mixed rice supply motor 74 and has a rotation sliding resistor 91 for detecting the rotation angle of the rotation shaft is input to the difference device 77. The mixed rice supply motor 74 is controlled based on this difference. That is, a signal (voltage) from the controller 252 for keeping the mixed rice supply shutter 72 open at a constant opening.
Is output. Also, from the volume circuit 93,
A voltage that changes from 0V to the maximum value of the signal (voltage) from the controller 252 is output.

Therefore, the set voltage is reduced by the differentiator 77 based on the output signal (voltage) from the volume circuit 93. When the voltage finally reaches 0 V, the driving of the mixed rice supply motor 74 is stopped. A predetermined opening can be obtained.

(Circulation / Discharge Switching Control) The brown rice discharge motor 140 for opening and closing the brown rice discharge shutter 138 has a D
A signal from a volume circuit 144 which is connected to an input / output port 262 via an A / A converter 141, a differentiator 143, and an amplifier 145 and has a rotation sliding resistor 142 for detecting the rotation angle of the brown rice discharging motor 140 is a differential signal. And is controlled based on this difference. That is, the control is based on the above-described paddy supply amount control / paddy supply shutter opening degree control.

(Rice Sensor) The rice sensor 22 outputs different signals depending on whether or not the rice is present in the rice supply hopper 14 and sends it to the controller 252. In addition, the output timing of the signal that does not exist is not the state where there is no paddy completely,
It may be a time when the minimum amount of paddy remains in the paddy supply hopper 14.

The operation of the present embodiment will be described below with reference to the flowcharts of FIGS.

As shown in FIG. 12, in step 300, it is determined whether or not the power switch 202 has been operated. When the operation of the power switch 202 turns on the hulling sorting apparatus 10 (affirmative determination), the operation is performed. The LED 214 of the display panel 200 is turned on (step 302),
Power is supplied to the controller 252 and the controller 252 enters a standby state.

In the standby state, the paddy supply shutter 18, the mixed rice supply shutter 72, and the brown rice discharge shutter 138 are closed, and the movable partition plate 114 is closed.
Is moved to a preset position (usually a standard position) by the partition position adjusting dial 250. Further, the inclination angle in the left-right direction of the swing sorting plate 100 is set to an initial value of 5 °.

During the preparation for the standby, the paddy is supplied to the paddy supply hopper 14.

In the next step 304, the operation switch 1
It is determined whether or not 2 has been operated, and if a positive determination is made, the drive of the main motor 32 is started in step 308.
At this time, the LEDs 216, 218, and 220 are arranged in order from the leftmost side to the rightmost side in FIG. 4 from 216 (No. 1) to 216 (No.
4), 218 (No. 5) to 218 (No. 8), 220 (No. 9)
To 223 (No. 11), the LED 216
(No.1) lights up.

By the driving of the main motor 32, the driving of the hulling rolls 26 and 28, the hulling discharge blower 42, and the screw conveyor 48 are started.

At the next step 310, the hulling roll 2
The gap size of 6, 28 is set to the initial value of 0.8 mm, and the LEDs 216 (N
o.2), LED 216 (No. 3) lights up. Next, at step 312, the rotational position of the swing control motor 108 is changed to swing the selection unit 56, and the clutch is engaged. Thereby, the swing of the swing selection plate 100 is started. Accordingly, the driving of the mixed rice elevator 60, the screw conveyors 54 and 134, and the lowers 33 and 146, which are the same power transmission system as the sorting unit 56, is also started. At this time, the LED 216 (No. 4) is turned on.

In the next step 314, the paddy supply shutter 18 is opened, and the LED 218 (No. 5) is turned on.
The paddy fed into the paddy supply hopper 14 sequentially passes through the supply port 16 and is guided to the gap between the paddy rolls 26 and 28. In the next step 316, the hulling roll 2
The control for narrowing the gap size of 6 and 28 by 0.1 mm is set, and the routine proceeds to step 318.

The hulled rice that has been hulled by the hulling rolls 26 and 28 slides down the first slope 36 while being diffused by the diffusion plate 34, and reaches the second slope 40.
While sliding down the second slope 40, the chaff is removed by suction and separated from brown rice or chaff. Pity is also separated from brown rice and paddy, guided to the second grain collection path 46, and accumulated by the screw conveyor 48.

The mixed rice of unpolished rice and paddy that has slid down the second slope 40 is guided by the third slope 50 and reaches the first grain collection path 52.

A screw conveyor 54 is provided in the first grain collecting path 52, and the mixed rice is collected at a lower portion of a mixed rice raising / lowering machine 60 provided on the back side of the paper of FIG.

In the mixed rice elevator 60, the collected mixed rice is transported to the upper part of the hulling sorter 10, and the mixed rice tank 62
Release to

In the mixed rice tank 62, the mixed rice hopper 6
The mixed rice is provided in the mixed rice hopper 66.
Will be integrated.

Here, the plate 80 of the mixed rice sensor 76
Is pressed and rotated by the accumulated mixed rice to recognize the accumulation amount of the mixed rice hopper 66.

That is, by transmitting the amount of rotation of the plate 80 to the rotary sliding resistor 88 via the lever 82, the link rod 84, and the lever 86, the volume circuit 90 including the rotary sliding resistor 88 generates electric power. Target (voltage value)
Recognize the amount of mixed rice accumulated.

That is, if it is determined in step 318 that the mixed rice in the mixed rice hopper 66 has reached a predetermined amount based on the voltage value, the process proceeds to step 320, where the mixed rice supply shutter 72 is opened. At this time, LE
D218 (No. 6) lights up.

The mixed rice supply shutter 72 is opened at a preset opening (usually a standard opening) with the mixed rice supply adjusting dial 248, and stably supplies the mixed rice to the sorting section by a predetermined amount.

The mixed rice passes through the supply port 68 and passes through the sorting section 56.
2 on the distribution plate 92 of FIG. This distribution plate 9
The mixed rice that has fallen into 2 spreads over the entire surface of the distribution plate 92 while gradually moving to the right end in FIG. 2 due to the inclination and the swinging motion of the projections formed on the surface.

Further, a leveling plate 94 is provided near the right end of the distribution plate 92 in FIG. 2, and the mixed rice is flattened by passing through the leveling plate 94, so that the mixed rice is evenly distributed to the six distribution ports 96. It flows down in an amount and is supplied to six rocking sorting plates 100.

By the way, the mixed rice supplied to the oscillating sorting plate 100 is small in the beginning and is not separated and sorted well. In order to prevent this phenomenon, in the next step 322, the swing sorting plate 100
Steep inclination of 30 seconds (standard inclination angle (5 °)
+ 1 °) and the LED 218 (No.
7) lights up.

As a result, the mixed rice supplied to the oscillating sorting plate 100 is gradually diffused from the supply portion by the inclination and the oscillating movement of the protrusion 98 formed on the surface, and the mixed rice with the unpolished rice and the paddy is mixed. While being separated and sorted at the same time, it is diffused over almost the entire surface of the swing sorting plate 100.

In order to perform the above-mentioned steady sorting, it is premised that mixed rice or the like is uniformly spread on the swing sorting plate 100 with a predetermined layer thickness. In the initial stage of the sliding sorting operation, the sorting is not performed uniformly, so that the steady sorting is not performed.

Therefore, in the initial stage of the above operation, the inclination angle of the swing selection plate 100 in the left-right direction is increased by a predetermined angle (1 ° in the present embodiment) from the standard inclination angle (5 °), and the rocking plate is tilted A period is provided in which the down slope from the side (the brown rice discharge side, the right side in FIG. 2) to the non-oscillating side (the paddy exit side, the left side in FIG. 2) is steeper.

In the present embodiment, this steep slope period is 3
It is set to 0 seconds. By providing the steeply inclined period, mixed rice or the like can be quickly and uniformly spread on the oscillating sorter plate 100 as a necessary minimum condition, though it is slightly thinner than a predetermined layer thickness. Thus, it is possible to obtain steady information.

The diffused mixed rice and the like falls from the near side of the paper of FIG.
The rotating fins 126 and 128 rotate in order to contact the blades of the rotating fins 126 and 128 provided on both sides of the rotating fin. The larger the amount of falling mixed rice and the like, the more the rotating fins 126,
Since the number of rotations of the rotation sorter 128 increases, the tilt angle of the swing sorter plate 100 is controlled quickly and easily by controlling the inclination angle of the swing sorter plate 100 so that the unit output pulse numbers of the two are matched.
Can be automatically adjusted.

This will be described in detail.
At the tips of the fins 126B, 128B of the 6, 128,
Every other permanent magnet 130 is buried.
Bracket 133 corresponding to a part near the rotation locus of 30
Since the proximity switch 132 is provided on the base 133B, the proximity switch 132 is repeatedly turned on and off by the rotation of the rotary fins 126 and 128. By electrically detecting this, a pulse waveform can be obtained.

Further, the rotating fins 126 and 128
The shafts 126A and 128A are supported by bearing pins 131, and a gap larger than rice grains is provided between the end surfaces of the shafts 126A and 128A and the legs 133A of the bracket 133. For this reason, even if mixed rice or the like enters during this time, it does not get caught and the rotating fins 1
26, 128 can always be smoothly rotatable.

Since the rotation speed of the rotating fins 126 and 128 is proportional to the amount of mixed rice or the like abutting, the controller 2
52 detects the difference in the number of rotations (frequency) between the left and right rotating fins 126 and 128, so that it is possible to recognize the state in which the thickness of the rocking sorter plate 100 such as mixed rice is offset.

Here, the controller 252 controls the tilt angle of the swing selection plate 100 based on the pulse signals from both the rotating fins 126 and 128 so that both the rotating fins 126 and 128 rotate at the same rotation speed. . Then, since both frequencies are coincident, the swing sorting plate 1
It can be recognized that the diffusion (layer thickness) state of the mixed rice and the like on 00 is uniform (step 324).

In this state, brown rice, paddy and mixed rice are clearly separated and sorted on the rocking sorting plate 100.

In step 328, when it is determined that the mixed rice and the like on the oscillating sorting plate 100 have become uniform, the brown rice discharge shutter 138 is set to be opened after a lapse of a predetermined time from this point, and , LED
(No.8) lights up.

[0160] Here, the paddy sorted on the swing sorting plate 100 falls from the left side of the fixed partition plate 112 in Fig. 2, is collected by the screw conveyor 54, and is again returned to the hulling roll 26 by the lower 33. 28.

Further, the mixed rice drops from between the fixed partition plate 112 and the movable partition plate 114 and reaches the screw conveyor 134 from the mixed rice discharge port 120, and the first grain collection path 5
It is returned to the second screw conveyor 54. As a result, the mixed rice is returned to the mixed rice tank 62 again by the mixed rice elevator 60.

The brown rice falls from the right side of the movable partition plate 114 in FIG. 2, reaches the screw conveyor 134 from the brown rice discharge port 118, and is discharged to the outside from the brown rice outlet 152 through the brown rice discharge duct 148 by the thrower 146. Is done.

When the brown rice discharge shutter 138 of the brown rice discharge port 118 is closed, the movable partition plate 11 is closed.
4 is guided to the mixed rice outlet 120 even if it falls from the right side in FIG.

At the next step 330, the mixed rice sensor 7
It is determined whether the minimum required mixed rice is present in the mixed rice hopper unit 66 based on the detection signal of No. 6 and if the determination is affirmative, the process proceeds to step 332, where the rice is detected based on the detection signal of the rice sensor 22. It is determined whether or not paddy remains in the supply hopper 14, and if so, the process returns to step 330,
Steps 330 and 332 are repeated.

If a negative determination is made in steps 330 and 332, it is determined that normal sorting cannot be performed, and the paddy supply shutter 18, the mixed rice supply shutter 72, and the brown rice discharge shutter 138 are closed once (step 33).
4), circulate mixed rice and the like in the machine.

At step 336, a buzzer or the like is used to warn that the paddy has been exhausted. Next, in step 338, the control waits for additional input of new paddy into the paddy supply hopper 14 for 30 seconds after the warning. In step 340, it is determined whether or not new paddy has been input. If so, the process proceeds from step 340 to 314, and the hulling sorting operation is continued.

If a negative judgment is made, that is, if the paddy is not put in, the process proceeds from step 340 to 342,
The swing of the swing selection plate 100 is stopped, and at the same time, the drive of the main motor 32 is stopped.

At step 344, the stop switch 206
It is determined whether or not has been operated, and if an affirmative determination is made, the process ends in the current state.

If a negative determination is made in step 344, the process proceeds from step 344 to step 346, where it is determined whether the operation switch 12 has been operated. If an affirmative determination is made, the process proceeds to step 348. Then, a mixed rice discharging course (see FIG. 13) in the remaining rice processing mode is executed.

If a negative determination is made in step 346, the flow shifts from step 346 to step 350 to determine whether or not the discharge switch 204 has been operated. If an affirmative determination is made, the flow shifts to step 352. Then, a brown rice discharging course (see FIG. 13) in the remaining rice processing mode is executed.

If a negative determination is made in step 350, the process returns to step 344, and steps 344, 346, and 350 are performed until one of the stop switch 206, the operation switch 12, and the discharge switch 204 is operated.
repeat.

FIG. 13 shows a subroutine for executing the remaining rice processing mode.

First, a mixed rice discharging course when the operation switch 12 is operated will be described. This is a course to discharge the remaining rice in the aircraft as it is (mixed rice) outside the aircraft.

In step 360, driving of the main motor 32 is started, and then, in step 362, driving of the swinging selection plate is started.

In the next step 364, the tilt angle of the swing sorting plate is set to a gentler tilt angle (-2 °) than the standard tilt angle (5 °).

At the next step 366, the movable partition plate 114 is moved to the non-oscillating side, and the operation is continued for 2 minutes in this state. The discharge of all remaining rice is completed in these two minutes.

As described above, in the mixed rice discharging course in the residual rice processing mode, the tilt angle of the swinging selection plate 100 in the left-right direction is set to a predetermined angle (in the present embodiment, 2 degrees) than the standard tilt angle (5 °). °) Reduced, the down slope from the swinging side (brown rice discharge side) to the non-swirling side (paddy outlet side) was set to a gentle slope for 2 minutes, so it remained on the swing sorting plate 100. All of the mixed rice and the like can be dropped from the swinging side and quickly taken out of the apparatus via the brown rice discharge port without being circulated.

Since the movable partition plate 114 is moved to the non-oscillating side from the standard position as in the step 366, the movable partition plate 114 is further outside the apparatus than when the movable partition plate 114 is placed at the standard position. It is possible to shorten the take-out time to the device.

After the above two-minute operation, the process proceeds from step 366 to step 368, in which the swing sorting plate is returned to the standard inclination angle (5 °). Then, in step 370, the movable partition plate 114 is returned to its original state. In the next step 372, the brown rice discharge shutter 138 is closed.

In the next step 374, the swing sorting plate 10
The swing of 0 is stopped, and then the drive of the main motor 32 is stopped in step 376, and the process of the mixed rice discharging course is ended.

Next, the brown rice discharging course when the discharging switch 204 is operated will be described. This is a course in which all the remaining rice in the aircraft is converted into brown rice and then discharged outside the aircraft.

At step 360A, the main motor 32
Is started, and then in step 378, control is set to narrow the gap between the hulling rolls 26 and 28 by 0.1 mm every 15 minutes. Then, in step 362A, the swing of the swing sorting plate 100 is started. I do.

In the next step 379, the swing sorting plate 10
0 is an inclination angle (+3) steeper than the standard inclination angle (5 °).
°) and continue operation for 4 minutes.

As described above, in the brown rice discharging course in the remaining rice processing mode, the tilt angle of the swinging selection plate 100 in the left-right direction is set to a predetermined angle (3 ° in the present embodiment) than the standard tilt angle (5 °). ) Increase, rocking side (brown rice discharge side)
Down slope to the non-rocking side (rice exit side) was steeply inclined, and this was continued for a predetermined period (4 minutes), so that all mixed rice etc. fell to the non-rocking side and Since it is returned to the upstream side and this is repeated several times during a predetermined period (4 minutes), it is possible to take out everything from brown rice.

After the continuation of the operation for 4 minutes, the flow shifts to step 364, and the same processing as in the mixed rice discharging course is executed.

Next, if the stop switch 206 is operated during the operation of the hulling sorter 10, an interruption is performed and the interruption mode is executed.

In this interruption mode, as shown in FIG. 14A, in step 380, the paddy supply shutter 18, the mixed rice supply shutter 72, and the brown rice discharge shutter 138 are immediately closed regardless of the current operation state. Next, in step 382, the angle control of the swing sorting plate 100 and the position control of the movable partition plate 114 are stopped, and are maintained as they are.

In the next step 384, the swing sorting plate 10
The swing of 0 is stopped (the tension clutch is disengaged), and then the drive of the main motor 32 is stopped in step 386.

[0189] This interruption mode is executed in about 5 seconds, which is a so-called emergency stop. After that, it is necessary to select whether to end the operation as it is or to perform a restart process for treating the remaining rice. Becomes This selection is performed by operating the stop switch 206 or operating the operation switch 12.

That is, if it is determined in step 388 that the stop switch 390 has been operated, the operation ends as it is. If it is determined in step 390 that the operation switch 12 has been operated, the restart control shown in FIG. 14B is executed. Steps 388 and 390 are repeated until either the stop switch 206 or the operation switch 12 is operated.

FIG. 14B shows a flowchart for the restart processing.

In step 392, first, the main motor 3
2 is started, and then swing of the swing sorting plate 100 is started (step 394).

In the next step 396, the swing sorting plate 10
The tilt angle of 0 and the position control of the movable partition plate 114 are restarted.
8, the mixed rice supply shutter 72 is opened, and the brown rice discharge shutter 138 is opened. Then, the process returns to the processing routine at the time of interruption. Note that this restart process
It is executed in about 10 seconds, and can quickly start up.

(Modification of Rotating Fin) The rotating fins 126 and 128 described in the above embodiment correspond to the invention of claim 2, and are limited to the rotating body of claim 1. is not. Therefore, the rotation described in claim 1 includes the following modifications.

As shown in FIG. 15, this rotating fin 1
A permanent magnet 1130 is buried in each of 126 and 1128, and a proximity switch 1132 extends along a part of its rotation path.
Are arranged. Therefore, the rotating fins 1126, 1
When 128 rotates, the proximity switch 1132 repeatedly turns on and off, and can output a pulse signal.

The two rotating fins 1126, 1128
The tilt angle of the swing sorting plate 100 is controlled by the pulse signal.

Since the mixed rice or the like dropped from the swinging sorting plate 100 comes into contact with the blades of the rotating fins 1126 and 1128 provided on both sides of the swinging sorting plate 100, the rotating fins 1126 and 1128 rotate. Since the number of rotations of the rotating fins 1126 and 1128 increases as the amount of falling of the mixed rice or the like increases, the inclination angle of the oscillating selection plate 100 is controlled so that the unit output pulse numbers of the two fins coincide. In addition, the tilt angle of the swing sorting plate 100 can be automatically adjusted easily.

[0198]

As described above, the rice hulling sorting apparatus according to the present invention realizes accurate sorting with simple control, and can prevent rice from being mixed into brown rice products discharged from the brown rice discharge port. It has an excellent effect of being able to.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of a hulling sorter according to the present embodiment.

FIG. 2 is a schematic configuration diagram of a hulling sorter according to the present embodiment.

FIG. 3 is a schematic diagram illustrating a flow of grains in the hulling sorter according to the present embodiment.

FIG. 4 is a front view (with a lid closed) of an operation display panel provided in the hulling sorter.

FIG. 5 is a front view (with a lid open) of an operation display panel provided in the hulling sorter.

FIG. 6 is a perspective view showing a link mechanism for transmitting a rotating operation of a plate installed in a mixed rice tank to a rotary sliding resistor.

FIG. 7 is a front view including a swing mechanism of a sorting unit.

FIG. 8 is a perspective view showing a link mechanism for transmitting the displacement of the inclination angle of the sorting unit to the rotary sliding resistor.

9A is a side view of a rotating fin, and FIG.
FIG. 6A is a sectional view taken along line IXB-IXB of FIG.

FIG. 10 is a control block diagram (controller) of the hulling sorter according to the present embodiment.

FIG. 11 is a control block diagram (peripheral equipment) of the hulling sorter according to the present embodiment.

FIG. 12 is a control flowchart (normal operation) showing an operation of the hulling sorter according to the present embodiment.

FIG. 13 is a control flowchart (remaining rice processing mode) showing the operation of the hulling sorter according to the present embodiment.

FIG. 14 is a control flowchart showing an operation of the hulling sorter according to the present embodiment, in which (A) is an interruption operation flowchart and (B) is a restart control flowchart.

15A and 15B show a modified example of the rotating body of the present invention, wherein FIG. 15A is a side view of a rotating fin, and FIG.
It is a VB line sectional view.

[Explanation of symbols]

Reference Signs List 10 hulling sorting device 14 hulling supply hopper (hulling unit) 18 hulling supply shutter 22 hulling sensor 24 hulling room (hulling unit) 26, 28 hulling roll 56 sorting unit 62 mixed rice tank (reservoir) 66 mixed rice Hopper unit 72 Mixed rice supply shutter 80 Plate 88 Rotary sliding resistor (for detecting mixed rice amount in mixed rice tank) 100 Swing sorting plate 104 Rotating sliding resistor (for sorting plate tilt angle) 112 Fixed partition plate 114 Movable Partition plate 123 Rotary sliding resistor (partition plate position detection) 126, 128 Rotating fin (rotary body) 138 Brown rice discharge shutter 200 Operation display panel 252 Controller

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B07B 13/18 B07B 13/18 (72) Inventor Shingo Shida 404 Oinomori Mori, Tendo City, Yamagata Pref. Inside the factory (72) Inventor Fumiya Ishiyama 404 Oinomori, Tendo City, Yamagata Prefecture F-term in the Yamamoto Works (reference) 4D021 JA05 JA08 JA09 JB03 KA18 KB05 LA01 LA02 LA05 LA07 LA08 LA10 LA20 MA01 MA05 MA06 MA07 MA08 MA10 NA03 NA10 4D043 AA02 DA01 DG09 GA02 GB02 GB07 GB12 GB21 GB31 GB41 GB48 LA01 LA07 LA11 LA18 MA01 MA11 MA14 MB01 MB04 MB11 MB14 MB19 MB21 MB24

Claims (3)

[Claims] 1. A paddle input unit having a paddy supply hopper for storing paddles to be supplied, a paddle amount detection unit for detecting an amount of paddy in the paddle supply hopper, and a paddle sent from the paddy supply hopper. A rice hulling unit for hulling the paddy, a storage unit having a mixed rice tank for storing the mixed rice of brown rice and the paddy sent from the hulling unit, and detecting an amount of the mixed rice in the mixed rice tank Mixed rice amount detection means, a sorting unit that sorts the mixed rice sent from the storage unit into brown rice, paddy and mixed rice, and a brown rice discharge shutter for taking out the brown rice selected in the sorting unit out of the device. When the amount of paddy in the paddy supply hopper is detected by the paddy amount detecting means to be equal to or less than a predetermined amount, or the amount of mixed rice in the mixed rice tank is equal to or less than a predetermined amount by the mixed rice amount detecting means. That the brown rice discharge Hulling sorting device comprising a rice discharging shutter control means for controlling so as to close the coater, the. 2. The unpolished rice discharge shutter control means, when the unhulled rice detecting hopper detects that a new unhulled rice is thrown into the unhulled supplying hopper and the amount of unhulled rice in the unhulled supplying hopper is equal to or more than a predetermined amount. The paddy rice according to claim 1, wherein when the amount of mixed rice in the mixed rice tank is detected by the mixed rice amount detecting means to be equal to or more than a predetermined value, the brown rice discharge shutter is opened. Sliding sorter. 3. When the amount of paddy in the paddy supply hopper is detected to be equal to or less than a predetermined value by the paddy amount detecting means,
3. The method according to claim 1, further comprising a notifying unit for notifying when the amount of the mixed rice in the mixed rice tank is detected to be equal to or less than a predetermined value by the mixed rice amount detecting unit. Rice hulling sorting equipment.