JP2963900B1 - Hulling sorting equipment - Google Patents

Abstract

Abstract: [PROBLEMS] To automatically adjust the amount of paddy supplied to a hulling unit (amount of hulling) with a simple configuration and always keep the amount of mixed rice in a storage unit constant. SOLUTION: The opening degree of a mixed rice supply shutter 72 and the opening degree of the paddy supply shutter 18 are controlled by a mixed rice tank 62.
It is controlled in accordance with a signal from a mixed rice sensor 76 disposed therein. In addition, paddy supply shutter 1
8 is controlled so as to be fully opened during operation, and the opening of the mixed rice supply shutter 72 may be adjusted based on a signal from the mixed rice sensor 76, or conversely, the mixed rice supply shutter 72 May be set in advance, and the opening of the paddy supply shutter 18 may be adjusted based on a signal from the mixed rice sensor 76.

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 sorting apparatus includes a hulling unit into which hulling is input, a hulling unit to hulling the hulling sent from the hulling unit, and brown rice sent from the hulling unit. A storage unit for storing mixed rice of rice and paddy, and a sorting unit for sorting mixed rice sent from the storage unit into brown rice, paddy and mixed rice, and taking out the brown rice sorted in the sorting unit It has a configuration.

The paddy input section has a hopper 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.

[0008] The paddy is returned to the upstream side of the hulling roll, the mixed rice is returned to the upstream side of the swing sorting section, and the brown rice is discharged out of the apparatus and taken out.

[0009] By the way, the ratio of the amount of brown rice and the amount of the unpolished rice, and the ratio of the amount of the selected brown rice, the rice and the mixed rice are determined by the properties of the rice and the brown rice (moisture content, presence or absence of spine, It depends on the presence or absence of a branch spike, the amount of defective rice, etc.). Therefore, the amount of the mixed rice in the storage unit coming from or returning from the hulling unit or the sorting unit is considerably easily changed.

[0010] Therefore, between the padding section and the paddy section, a padding supply shutter for adjusting the paddy supply amount (paddy amount) to the paddy section in order to keep the mixed rice in the storage section at a predetermined amount. Is provided. The paddy supply shutter opens and closes according to the amount of mixed rice in the storage unit. That is, when the amount of mixed rice in the storage unit is equal to or more than a predetermined amount, the rice moves in the closing direction to reduce the amount of hulling, and when the amount of mixed rice is equal to or less than the predetermined amount, moves in the opening direction to increase the amount of hulling. .

[0011]

A conventional paddy supply shutter is provided with a plate which is disposed in a storage portion and is rotatably displaced in accordance with the amount of mixed rice, or a suspension tank which is displaced up and down in accordance with the amount of mixed rice. , Connected via a link mechanism and opened and closed by the displacement. However, such a conventional device has a complicated structure and is expensive.

[0012] In consideration of the above fact, the present invention automatically adjusts the amount of paddy supplied to the hulling unit (the amount of hulling) with a simple configuration, so that the amount of mixed rice in the storage unit is always kept constant. The aim is to obtain a hulling sorter that can.

[0013]

Means for Solving the Problems According to the first aspect of the present invention, there is provided a paddy input section into which paddy is input, a paddy section for paddying paddy sent from the paddy input section, and a padding section from the paddy section. A storage unit for storing mixed rice of brown rice and paddy that is to be mixed, and a sorting unit for separating mixed rice sent from the storage unit into brown rice and paddy and mixed rice, and is sorted by the sorting unit. A rice-grinding sorting device for removing brown rice, the rice-grinding shutter being provided between the rice-grinding unit and the rice-grinding unit and being openable and closable by a driving force of a motor; A plate displaced in accordance with the amount of mixed rice in the portion, and a control for setting the opening of the paddy supply shutter in accordance with the displacement of the plate and applying a predetermined voltage to change the opening of the paddy supply shutter The sliding portion slides according to the opening degree of the means and the paddy supply shutter. An opening slide resistor whose resistance value changes at a position, and an opening detection volume circuit that outputs a voltage opposite to a voltage applied to the motor with a resistance value of the opening slide resistor. The voltage applied to the motor is gradually attenuated based on the voltage output from the opening detection volume circuit, and the voltage applied to the motor is set to 0 when the paddy supply shutter reaches a predetermined opening. Attenuating means.

According to the first aspect of the present invention, the paddy supply shutter is provided between the padding section and the paddy section, and can be opened and closed by the driving force of the motor.

On the other hand, a plate that is displaced in accordance with the amount of mixed rice is disposed in the storage section, and the control means controls the motor based on the amount of displacement of the plate to control the opening of the paddy supply shutter. adjust.

When the opening / closing degree of the paddy supply shutter changes, the voltage from the opening detection volume circuit changes with the change in the opening degree of the paddy supply shutter. This changing voltage has a relation opposite to the supply voltage to the motor, and attenuates the operation of the paddy supply shutter by driving the motor. Here, when the opening degree reaches a predetermined value, the voltage applied to the motor is canceled by the voltage from the opening detection volume circuit, and the driving stops. Thereby, the paddy supply shutter can be stopped at a predetermined opening degree.

Thus, the amount of the mixed rice in the storage section can be kept substantially constant.

As the adjustment of the opening of the paddy supply shutter, there are a high-precision adjustment as shown in Table 1 below and a normal adjustment as shown in Table 2. Generally, normal adjustment (Table 2) is sufficient, but as a function, the opening of the paddy supply shutter can be adjusted to an intermediate opening as shown in Table 1.

[0019]

[Table 1]

[0020]

[Table 2] According to a second aspect of the present invention, in the first aspect of the present invention, the control means slides the displacement sliding portion in accordance with the displacement amount of the plate, and the displacement sliding portion moves. A displacement resistor whose resistance value changes at the position of 変 位, a displacement amount detection volume circuit whose voltage changes with the resistance value of the slide resistor, and a voltage output from the displacement amount detection volume circuit. A calculating means for calculating an opening degree of the paddy supply shutter by using the control means.
A hulling sorter as described.

According to the second aspect of the present invention, the voltage output from the displacement detection volume circuit changes according to the displacement of the plate. The calculating means determines the opening degree of the paddy supply shutter based on the voltage. A predetermined voltage is applied to the motor to operate the paddy supply shutter in order to achieve the determined opening degree.

According to a third aspect of the present invention, in the first or second aspect, the control means includes:
When the amount of mixed rice in the storage section is equal to or more than a predetermined amount, the paddy supply shutter is moved in a closing direction, and when the amount of mixed rice is equal to or less than a predetermined amount, the paddy supply shutter is moved in an opening direction.

According to the third aspect of the present invention, in the control means, the paddy supply shutter is moved in the closing direction when the amount of mixed rice in the storage portion is equal to or more than a predetermined amount, and when the mixed rice is equal to or less than the predetermined amount, the rice is shuttered. Move the paddy supply shutter in the opening direction. As a result, the amount of mixed rice in the storage section can be maintained at a predetermined amount. (Embodiment) As shown in FIG. 15, the opening and closing of the paddy supply shutter A is controlled by applying a predetermined voltage to the motor C by a signal from the control means B. A signal corresponding to the displacement of the plate F is input to the control means B. This signal may be provided with a displacement detection volume circuit, and may be a voltage value output from the displacement detection volume circuit.

By the signal based on the displacement of the plate F, a predetermined voltage is applied from the control means B to the motor C so that the paddy supply shutter A has a predetermined opening.

This applied voltage is input to the attenuation means D. The damping means D includes an opening detection volume circuit E.
Is also input.

The opening detection volume circuit E constitutes a DC circuit to which an opening sliding resistor G whose resistance changes in accordance with the opening of the paddy supply shutter A is connected. The voltage opposite to the voltage from the control means B is sent to the damping means D in accordance with the amount of displacement (opening) of. Therefore, if these differences become the actual applied voltage to the motor C, and the control means B always outputs a constant voltage,
The voltage applied to the motor C is automatically attenuated, and the voltage becomes 0 (cancels) at a predetermined opening.

[0027]

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 putting in 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 opening degree 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 flowing into the inside of the paddy sorting apparatus 10 from the supply port 16 is first sent to a paddy room 24 as a paddy section. 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 of the pair of hulling rolls 26 and 28 are changed. 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. In addition, the following is what the hulling processed by a pair of hulling rolls 26 and 28 is called hulling rice, in which a large amount of unpolished brown rice and a small amount of unhulled rice are not hulled. And pity (immature grains, rice husks with almost no fruit) 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.

On the second slope 40, one end opening of the suction duct 38 is arranged to face. 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.

Here, 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 top of the hulling sorting device 10 by the mixing 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 which is rotatable at one end. 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 change in the resistance 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 of 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 sorting 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 a 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 set to 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 is provided with a feed screw portion 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 projections 98 having a substantially triangular cross section, the right side of which is erected and the left side is gently inclined, formed on the entire surface by embossing. .

The mixed rice distributed by the distribution port 96 falls to the highest part (the right back side in FIG. 2) on each rocking 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 swing sorting plate 100, and is sorted (separated). ing. This phenomenon gradually appears clearly while flowing 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, etc.) on the rocking sorter 100 are placed in each stage (6
) From the front side of the rocking sorting plate 100 to the bottom plate portion 110.

Here, a fixed partition plate 112 and a movable partition plate 114 are disposed at the falling end (the front end in FIG. 2) of the swing sorting plate 100. 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 the brown rice and the 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 selection at the time of sorting brown rice by the swing 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 provided near the left and right ends of 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
A permanent magnet 130 is buried in 6, 128, and a proximity switch 132 is provided along a part of the rotation locus. Therefore, 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 discharge port 118 and the mixed rice discharge port 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.

Accordingly, 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 sorting apparatus 10 according to the present embodiment, the sorting by the sorting unit 56 is not completely performed, and the 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 an upper surface thereof. Guidance signs 208, 210, 21 in the form of seals
2 are installed.

On the guide 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 and 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, a numerical value "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 operated thirdly (operated during driving), 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.

The interruption switch 206 is not normally used, but is operated when the operation is temporarily interrupted. When the interruption switch 206 is operated, the operation is quickly stopped without performing the remaining rice processing, and the operation waits until the operation is restarted by operating the operation switch 12.

As described above, the rice hulling sorting apparatus 10 can be automatically operated by the four switches of power supply, operation, discharge, and interruption. 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 lid 222 is opened, a display 224, a manual operation unit 226, and a dial setting unit 228 are provided inside the lid 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 the respective motors are manually operated are arranged. At the left position, an initial roll switch 226A for operating the gap between the hulling rolls 26 and 28 to a predetermined initial gap size position (0.8 mm) at the start of operation, and the gap to compensate for the wear of the hulling rolls 26 and 28. There is provided an automatic roll switch 226B for automatically controlling to reduce the size by a predetermined size (0.1 mm) every predetermined time (15 minutes).

At 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.

At 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 opening of the mixed rice supply shutter 72 (the amount of mixed rice supplied to the sorting unit 56) is provided in the dial setting unit 228.
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 set to “standard” during the automatic operation described above, and can be changed (adjusted) in the middle as necessary. .

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. 11, a DC servo mechanism unit 268 for driving the rice supply shutter 18 via a D / A converter 266 is provided at the input / output port 262. 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) The hulling rolls 26 and 28 are rotated by the driving force of the main motor 32.
The main motor 32 is a three-phase 200 V motor having a rating of 1.9 kW. A current value of a predetermined phase (R phase) of the main motor 32 is detected by a current detector 278,
After rectification by the full-wave rectifier 280, the A / D converter 2
The signal is A / D converted at 82 and input to the input / output port 262 of the controller 252. Also, the input / output port 26
A roll interval adjusting motor 30 for adjusting the gap size between the hulling rolls 26 and 28 is connected to 2.

The roll gap adjusting motor 30 temporarily widens the gap between the hulling rolls 26 and 28 in response to a signal from the controller 252 in the initial stage of operation, 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) The movable partition plate 114 sets its partition position by either a standard value based on a signal from the controller 252 or an arbitrary value based on a partition position adjustment diagram 250 on the operation display panel 200. be able to.

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. (Sorting Unit) The input / output port 262 includes a main motor 3 in a drive transmission system that swings the swinging sorting plate 100 of the sorting unit 56.
A swing control motor 108 for connecting and disconnecting 2 is connected, and the controller 252 can execute the swing at a predetermined timing (after a predetermined time after pressing the operation switch 12). 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 is operated / operated based on the operation of the operation switch 12, the discharge switch 204, and the interruption switch 206.
Stop is controlled. (Swing Selection Plate Tilt Angle Control) A rotary sliding resistor 104 whose resistance value is changed based on the tilt angle of the swing selection plate 100
Is connected to a differentiator 296 via an A / D converter 294, and an actual angle (actual value) is input to the differentiator 296. This difference device 29
Numeral 6 is connected to the input / output port 262 so that a set angle (set value) is input. For this reason,
The difference between the set value and the actual value is output from the differentiator 296,
The tilt angle motor 101 is controlled according to the difference.

The set value (set angle) is set to
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 diffusion state of the mixed rice on the oscillating sorter 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 is connected to an input / output port 2 via a D / A converter 75, a differentiator 77, and an amplifier 79.
62. A signal from a mixed rice supply amount adjustment dial 248 provided on the operation display panel 200 and connected to the input / output port 262 is input to the differentiator 77. The difference circuit 77 has a volume circuit 93 connected to the rotation shaft of the mixed rice supply motor 74 and having a rotation sliding resistor 91 for detecting the rotation angle of the rotation shaft.
Is input. Mixed rice supply motor 74
Is controlled based on this difference. That is, the controller 252 outputs a signal (voltage) for keeping the mixed rice supply shutter 72 open at a fixed opening. Further, a voltage that changes from 0 V to the maximum value of the signal (voltage) from the controller 252 is output from the volume circuit 93.

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 and discharge switching control) The brown rice discharge motor 140 for opening and closing the brown rice discharge shutter 138 is provided by the D / A converter 1.
41, a signal from a volume circuit 144 which is connected to an input / output port 262 via 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 input to the differentiator 143. And control is performed based on this difference. That is,
The control is based on the control of the amount of paddy supply / the control of the opening of the paddy supply shutter. (Rice Sensor) The rice sensor 22 outputs a different signal depending on whether or not the rice is present in the rice supply hopper 14 and sends the signal to the controller 252. It should be noted that the output timing of the non-existent signal is not a state in which the paddy is completely absent, but the paddy supply hopper 1.
4 may be a time when a minimum of paddy remains.

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 12 has been operated.
By operating this power switch 12, the hulling sorting device 10
Is turned on (positive determination), the operation display panel 20
The 0 LED 214 is turned on (step 302), and the controller 252 is powered on and 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.

In 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 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 slipped 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 recovery path 52, and the mixed rice is collected in a lower part of a mixed rice elevator 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 discharged to the mixed rice tank 62.

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 flow proceeds to step 320, in which 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 to stably supply 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, and is almost 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
Is set to steeply tilt (+ 1 °) for 30 seconds, and the LED 218 (No. 7) is turned on.

As a result, the mixed rice supplied to the swing sorting plate 100 is gradually diffused from the supply portion by the inclination and the swing operation of the projection 98 formed on the surface, and the mixed rice is supplied to the swing sorting plate 100. Spreads almost all over.

The diffused mixed rice falls from the near side of the sheet of FIG. 2, but at this time, it comes into contact with the blades of the rotating fins 126 and 128 provided on both sides of the swinging sorting plate 100. The rotating fins 126 and 128 rotate. The larger the amount of mixed rice dropped, the more the rotating fins 126, 1
Since the number of rotations of 28 increases, the tilt angle of the swing selection plate 100 is automatically adjusted quickly and easily by controlling the tilt angle of the swing selection plate 100 so that the unit output pulse numbers of the two are matched. can do.

This will be described in detail.
6, 128, a permanent magnet 130 is buried. The proximity switch 1 corresponds to a part of the rotation locus of the permanent magnet 130.
32, the rotating fins 126, 128
The proximity switch 132 is repeatedly turned on and off by the rotation of. By electrically detecting this, a pulse waveform can be obtained.

Since the rotation speeds of the rotating fins 126 and 128 are proportional to the amount of the mixed rice that abuts, the controller 252 detects the difference between the rotation speeds (frequency) of the left and right rotating fins 126 and 128 to perform swing sorting. It is possible to recognize the state of the unevenness of the mixed rice on the plate 100.

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 on 00 has become uniform (step 324).

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

In step 328, if it is determined that the mixed rice and the like on the swinging sorting plate 100 have become equal, the brown rice discharging shutter 138 is set to be opened after a predetermined time has elapsed from this point, and , LED
(No.8) lights up.

The paddy sorted on the swing sorting plate 100 falls from the left side of the fixed partition plate 112 in FIG. 2 and is collected by the screw conveyor 54, and again by the lower 33, the hulling roll 26. 28.

Further, the mixed rice falls 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.

Brown rice falls from the right side of the movable partition plate 114 in FIG. 2 and reaches the screw conveyor 134 from the brown rice discharge port 118, and is discharged to the outside from the brown rice discharge port 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.

In 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 brown rice discharge shutter 138 is closed once (step 3).
34), circulating mixed rice and the like in the machine.

At step 336, a buzzer or the like is used to warn that the paddy has run out. 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 324, and the hulling sorting operation is continued.

If a negative determination is made, that is, if the paddy has not been input, the flow shifts from step 340 to 342 to shift to the stop mode control.

In this stop mode control, as shown in FIG.
Is turned on or not, and in the case of a negative determination,
The routine proceeds to step 352, where it is determined whether the operation switch 12 has been turned on. If the determination is negative, steps 350 and 352 are repeated. Step 35
If a positive determination is made at 0, the process proceeds to step 354,
If an affirmative determination is made in step 352, step 35
Move to 6.

That is, the subsequent processing differs depending on the operated switch of the discharge switch 204 or the operation switch 12.

When the discharge switch 204 is operated first, control is performed such that the remaining rice in the machine is circulated several times until it becomes brown rice, and is then hulled and then discharged. In this case, the brown rice becomes rough.

On the other hand, when the operation switch 12 is operated first, all the rice remaining in the machine is discharged as it is as mixed rice. Therefore, in this case, the brown rice is stored in a bag different from the brown rice bag stored before entering the stop mode, and is mixed with the next hulling work.

First, the case where the discharge switch 204 is turned on will be described.
The process proceeds to 54, where the paddy supply shutter 18 is closed (returned to the initial state), and then in step 358, the brown rice discharge shutter 138 is closed. That is, the remaining rice is not discharged.

In the next step 360, the swing sorting plate 10
0 is set to a steeply inclined state (8 °) for 4 minutes. Due to this steep inclination, the remaining rice on the oscillating sorting plate 100 is dropped from the left side of the fixed partition plate 112 as much as possible, returned to the hulling rolls 26 and 28 from the hulling return opening 116, and re-hulled. Within minutes), all of the remaining rice can be turned into brown rice.

In other words, when the vehicle is not in the steeply inclined state,
Most of the residual rice on the oscillating sorter 100 is fixed to the partition 112.
From the right side of the mixed rice outlet 120, through the mixed rice elevator 60, etc., and back to the oscillating sorting plate 100 again. It takes time.

In the next step 362, the swing sorting plate 10
0 is set to a gentle inclination state (2 °) for 2 minutes, and at the same time, the process proceeds to step 364 to open the brown rice discharge shutter 138 for 2 minutes.

Due to this gentle inclination, the remaining rice of the swinging sorting plate 100 is dropped from the right side of the movable partition plate 114 as much as possible, discharged from the brown rice discharge port 118, and all of the remaining rice is removed in a short time (2 minutes). Can be taken out from the brown rice outlet 152.

[0159] In other words, when the vehicle is not in the gentle inclination state,
Residual rice on the oscillating sorting plate 100 also falls from the left side of the movable partition plate 114, and returns to the oscillating sorting plate 100 from the mixed rice outlet 120 via the mixed rice elevator 60 and the like. It takes a long time to remove all the residual rice from the brown rice outlet 152.

When the partitioning position adjusting dial 250 on the operation display panel 200 is set to the standard position (automatic setting), the movable partitioning plate 114 moves to the left when the swing sorting plate 100 is gently inclined. The right side may be appropriately widened, and more residual rice may be dropped from the right side of the movable partition plate 114 to help remove all of the residual rice from the brown rice outlet 152 in a shorter time. Thereafter, step 368
Move to.

Next, a description will be given of the affirmative determination in step 352, that is, the case where the operation switch 12 is turned on. The process proceeds from step 352 to step 356 to close the paddy supply shutter (return to the initial state).
Next, in step 366, the swing sorting plate 100 is
For a minute (2 °). The effect of the gentle inclination is the same as that described in the section of steps 362 and 364. At this time, the automatically set movable partition plate 11
4 also moves and acts in the same manner as described above. As a result,
All the remaining rice can be taken out from the brown rice outlet 152 as mixed rice as it is.

In the next step 368, the brown rice discharging shutter 138 is closed (return to the initial state), and then in step 370, the swing sorting plate 100 and the movable partition plate 114 are returned to the original position (initial state). In this case, the movable partition plate 11
4 returns to the original state when it is set to the standard, otherwise the current position is maintained.

In the next step 372, the mixed rice supply shutter 72 is closed (returned to the initial state), and then in step 374, the swing of the swing sorting plate 100 is stopped.
The process proceeds to 76 to stop driving the main motor 32, and the stop mode control ends (return).

Next, when the suspending switch 206 is operated during the operation of the hulling sorter 10, an interruption occurs and the suspending 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.

Note that this interruption mode is executed in about 5 seconds, and is a so-called emergency stop, so that a restart process for treating residual rice is required. This restart processing is executed by operating the operation switch 12.

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

In step 388, first, the tension clutch is engaged by driving the swing control motor 108, and then the driving of the main motor 32 is started (step 39).
0).

In the next step 392, 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.

[0171]

As described above, the hulling sorting apparatus according to the present invention automatically adjusts the amount of hulling supplied to the hulling unit (the amount of hulling) with a simple configuration, and reduces the amount of mixed rice in the storage unit. Has an excellent effect that can always be kept constant.

[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 (stop operation) showing an 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.

FIG. 15 is a correspondence diagram according to the embodiment of the present invention.

[Explanation of symbols]

10 Rice hulling sorting device 14 Rice hulling hopper (Rug charging unit) 18 Rice hulling shutter 22 Rice hulling sensor 24 Rice hulling room (Hulling unit) 26, 28 Rice 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

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Fumiya Ishiyama 404 Oinomori, Tendo City, Yamagata Prefecture Inside Yamamoto Manufacturing Co., Ltd. (56) References JP-A-7-222930 (JP, A) JP-A-3-186357 ( (JP, A) Shokai Sho 57-76844 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B02B 1/00-7/02 109

Claims (3)

(57) [Claims] Claims: 1. A paddle input section into which paddy is input, a paddy section for padding paddy sent from the paddle input section, and a mixed rice of brown rice and paddy sent from the paddy section. A storage unit, having a sorting unit that sorts mixed rice sent from the storage unit into brown rice and paddy and mixed rice, and a hulling sorting device for taking out the brown rice sorted in the sorting unit. A paddy supply shutter that is provided between the paddy input section and the paddy section and that can be opened and closed by a driving force of a motor; and a plate that is provided in the storage section and that is displaced according to the amount of mixed rice in the storage section. A control means for setting the opening of the paddy supply shutter in accordance with the amount of displacement of the plate, applying a predetermined voltage to change the opening of the paddy supply shutter, and according to the opening of the paddy supply shutter The sliding part slides,
An opening degree sliding resistor whose resistance value changes at the position of the sliding portion is provided, and an opening degree detection for outputting a voltage opposite to a voltage applied to the motor with a resistance value of the opening degree sliding resistor. And a voltage circuit for the motor, the voltage applied to the motor is gradually attenuated based on the voltage output from the opening detection volume circuit, and the voltage applied to the motor when the paddy supply shutter reaches a predetermined opening. And a damping means for setting 0 to 0. 2. The displacement control device according to claim 1, wherein the control means includes a displacement amount sliding resistor in which a sliding portion slides in accordance with the displacement amount of the plate, and a resistance value changes at a position of the sliding portion. Displacement amount detection volume circuit in which the voltage changes with the resistance value of the amount sliding resistor, and calculation means for calculating the opening degree of the paddy supply shutter based on the voltage output from the displacement amount detection volume circuit The hulling sorter according to claim 1, characterized in that: 3. The control means moves the paddy supply shutter in a closing direction when the amount of mixed rice in the storage unit is equal to or more than a predetermined amount, and moves the rice supply shutter in an opening direction when the mixed rice is equal to or less than a predetermined amount. The hulling sorter according to claim 1 or 2, which is moved.