JPH09225327A - Regulator for paddy feed amount of paddy separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inhibit hunting by raising a response property in control of a paddy feed amount regulating device by a method wherein a level sensor detecting a storage amount of shelled rice, and the paddy feed amount regulating device regulating a paddy amount are set, and the paddy feed amount regulating device is controlled based on a detected value of the level sensor. SOLUTION: A paddy separator 1 is composed of a shelling device 2 and a separator 3, and the shelling device 2 is connected to the separator 3 via a bucket elevator 4. The shelling device 2 is composed of a feed hopper 5, a hulling roll 6, and a vibrator 7. A mixed rice tank 19 is fixed to a discharge part of the bucket elevator 4, and a level sensor S composed of sensors S1-S6 divided vertically into six parts for detecting a storage amount of shelled rice is fitted onto its inner wall surface. Further, a paddy feed amount regulating valve 15 is rotatably supported inward with a guide gutter inclined to a side face of a funnel support supporting the feed hopper 5, which is controlled based on a detected value of the level sensor S with a paddy feed valve control motor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hulling and sorting machine, and more particularly to a paddy supply amount adjusting device for a hulling and sorting machine.

[0002]

2. Description of the Related Art Conventionally, a take-off section having a pair of rolls,
In a hull and rice sorter composed of a hull / brown rice sorter consisting of a rocking sorter, etc., rice grains that have undergone depaction by rolls (hereinafter referred to as "soiled rice") are sorted by a grain lifting machine. It is transported to the section, but connected to the discharge section of the grain elevator,
That is, as the supply hopper of the sorting unit, the suspension tank 101
Are provided (see FIG. 7). The suspension tank 101 is suspended around the fulcrum 103 by the spring 102, so that the paddy supply amount adjusting valve 104 opens and closes in conjunction with this, and the supply amount to the roll is automatically adjusted. That is, a shaft 105 to which the paddy supply amount control valve 104 is fixed is pivotally supported on the lottery table 106 and both ends thereof are extended, and a locking piece 107 is fixed to one end and a connecting arm 108 is fixed to the other end. Then, by connecting the arm 108 and the suspension tank 101 with the rod 109, the paddy supply amount control valve 104 is opened and closed in association with the rice grain amount in the suspension tank 101, and the roll is rolled according to the processing capacity of the sorting unit. The amount of paddy supplied to the paddy is mechanically and automatically adjusted.

Further, in order to prevent overloading of the prime mover and hunting (disturbance) of the storage amount of the suspension tank 101 due to the difference in the properties of the raw material paddy and the removal capacity depending on the type of prime mover, the paddy supply control valve 104 is provided. The maximum opening was regulated and the maximum opening was regulated. That is, the paddy supply amount control valve 10
The locking piece 107 provided at the end of the shaft 105 for fixing 4 is
Since the paddy supply amount control valve 104 is locked at an open position to some extent, it is safe and proper to prevent the paddy supply amount control valve 104 from opening above a certain level even when the hanging tank 101 approaches an empty state. The amount of supply can be maintained.

[0004]

According to the above-mentioned conventional paddy supply amount adjusting device, the maximum opening of the paddy supply amount adjusting valve 104 is manually regulated to prevent the hunting of the storage amount of the suspension tank 101. Although the amount is limited and the paddy supply amount control valve 104 is interlocked with the rice feed amount control valve 104 according to the amount of rice grains in the suspension tank 101 to mechanically adjust the supply amount to the roll, the paddy supply amount control valve 104 and the suspension tank 101 and the rod 109,
Since the arms 108 and the shaft 105 are mechanically connected to each other, there is a problem in that the response of the feedback control is delayed and the hunting is not completely eliminated.

Further, since the amount of rice grains is sensed by the weight of the suspension tank 101 to control the paddy supply amount control valve 104, the volume of the suspension tank must be increased.

Further, the suspension tank 101 is a grain elevator 110.
Since it is hung by the spring 102 around the fulcrum 103 at the discharge part of the grain, the grain elevator 110 and the hanging tank 10
There is a drawback in that a gap is formed in the connection portion 111 with 1 and dust is ejected from this gap to pollute the surrounding environment.

In view of the above problems, the present invention makes the response of the opening / closing control of the paddy supply amount control valve quick and eliminates hunting, and makes the conventional hanging tank fixed and downsized. It is a technical object to provide a paddy supply amount adjusting device of a paddy hull sorting machine which does not spout.

[0008]

In order to solve the above problems, the present invention provides a hulling device provided with a pair of removing rolls, and a sorting device for selecting the polished rice removed by the hulling device. A fried grain device that communicates the sorting device and the hulling device to unload the milled rice to the sorting device, and a mixture that stores the milled rice pumped to the fried grain device and supplies it to the sorting device In a rice hull sorter provided with a rice tank and a switching device for switching between circulation and discharge of brown rice at a branch portion between the brown rice discharge passage and the mixed rice discharge passage provided in the sorting device, a wall surface of the mixed rice tank is provided. A level sensor that detects the storage amount of the polished rice, a paddy supply amount adjustment device that adjusts the amount of paddy that is supplied to the removing roll, and a control device that controls the paddy supply amount based on the detection value of the level sensor. The technical means of providing a control device was taken.

Further, the level sensor may be provided with a plurality of detection sensors in a longitudinal direction of a wall surface of the mixed rice tank.

The controller controls the storage speed of the polished rice in the mixed rice tank during the circulation of brown rice from the detection signals of the at least two detection sensors, and the accumulated rice from the mixed rice tank during the discharge of brown rice. Calculate the discharge rate and
The paddy quantity control device may be controlled by comparing the storage speed and the discharge speed.

[0011]

When the operator operates the switching device to the circulation side of the brown rice and starts the hulling work with the pair of removing rolls, the polished rice gradually accumulates in the mixed rice tank. At this time, the control device sets the paddy supply amount control valve of the paddy supply amount control device to a constant opening degree, and a plurality of level sensors provided in the vertical direction of the tank wall surface controls the movement of the polished rice to the mixed rice tank during the circulation of brown rice. Calculate the storage rate. Then, when the level sensor at the top of the tank detects the full amount of the polished rice, the controller once fully closes the paddy supply amount control valve to prevent the paddy from being swallowed. Then, the operator operates the switching device to the discharge side of the brown rice, causes the stored polished rice to flow into the sorting device, and discharges the brown rice to the outside of the machine. At this time, the control device calculates the reduction rate of the polished rice from the mixed rice tank during the discharge of brown rice by the plurality of level sensors provided in the vertical direction of the tank wall surface, and the previously calculated storage speed and this time are calculated. The opening rate of the paddy supply amount control valve for storing a fixed amount of rice grains in the tank is calculated by comparing with the decrease rate. And the control device:
The paddy supply amount control valve is opened / closed based on the result of this calculation.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 indicates the entire hulling / sorting machine, the hulling / sorting machine 1 includes a hulling device 2 and a sorting device 3, and a lifting device for connecting the hulling device 2 and the sorting device 3 together. Grain machine, eg bucket elevator 4
And other rice grain flow paths (described later).

The hulling device 2 is formed by a supply hopper 5 for loading raw material rice, a pair of depulling rolls 6 and a vibrating device 7 therebelow. A shelf plate 8 is installed obliquely below the vibrating device 7 so that the rice grains flow down, and a screw conveyor 9 connected to the supply port of the bucket elevator 4 is installed horizontally at the bottom of the shelf plate 8. In the middle part, the screw conveyor 1 communicating with the No. 2 port 10 for unripe rice
Install 1 horizontally. A mixed rice tank 19 for storing the polished rice is fixedly provided at the discharge portion of the bucket elevator 4, and a level sensor S for detecting the accumulated amount of the polished rice is attached to the inner wall surface of the tank for the mixed rice tank 19. A plurality of the level sensors S, for example, 6 in the vertical direction are divided into the sensors S1 to S6, and the storage amount of the polished rice stored in the tank 19 can be finely detected. A manual tank discharge valve 53 is provided at the discharge port of the tank 19.

On the lottery table 12 that supports the supply hopper 5 (see FIG. 2), a rotary shaft 13 is rotatably provided laterally, and the rotary shaft 13 is provided on a side surface of the lottery table 12. Paddy supply amount control valve 1 inwardly with respect to the obliquely installed guide gutter 14.
5 is pivoted. A paddy supply valve control motor 16 is attached to one end of the rotating shaft 13 via a bush 17, while a large-diameter pulley 20 is attached to the other end of the rotating shaft 13. An opening degree detection sensor 18 such as a potentiometer is provided on one side of the lottery stand 12, and the opening degree detection sensor 18 has a sensor shaft 54 provided in parallel with the rotating shaft 13 and a small diameter pulley 21. To wear. The small diameter pulley 20
The large-diameter pulley 21 and the large-diameter pulley 21 are connected to each other by a belt 22. As a result, the sensor shaft 54 is largely rotated with respect to a slight rotation of the rotating shaft 13, so that a slight opening change of the paddy supply amount control valve 15 is caused. Detects with high sensitivity. By the way, the lottery stand 12 is partitioned into a raw rice paddy supply port 23 whose flow rate can be adjusted by a paddy feed amount control valve 15 and a return paddy feed port 24 other than that (see FIG. 1).
The reference return paddle supply port 24 is connected to the return paddy thrower 34 via the return paddy bypass 25 formed in the supply hopper 5.

Next, the sorting device will be described. The sorting device 3 is composed of a plurality of sorting plates 26 stacked in an inclined manner so that the sorting plates 26 can swing (a swinging mechanism is not shown). Below the tank 19, a leveling device 27 integrated with the sorting plate 26 is provided. Further, a paddy partition plate 28 and a brown rice partition plate 29 are movably provided in the discharging portion of the sorting plate 26 in the swinging direction and divided into three parts. The swaying side is the paddy discharge port 30 and the swaying side is the brown rice discharge port. 32, the middle thereof is formed in the mixed rice discharge port 31, respectively. The paddy discharge port 30 is connected to the returning paddy thrower 34 via the paddy discharge route 33, and the brown rice discharge port 32 is connected to the screw conveyor 9 on the lower stage of the shelf plate 8 via the brown rice discharge route 35, respectively. Also,
The brown rice discharged from the brown rice discharge port 32 is supplied to the brown rice discharge path 3
5 and the mixed rice discharging passage 36, a switching valve 37 is provided at a branch portion between the brown rice discharging passage 35 and the mixed rice discharging passage 36.
Is provided. Then, the switching valve 37 is connected to the refined product discharge gutter 38.
When switched to the side, the brown rice is discharged to the outside of the machine through the refined product discharge lower 39.

Reference numeral 40 denotes a main lever for operating / stopping the selection plate 26 and switching the switching valve 37 (see FIG. 2).
), A lever shaft 41 is rotatably provided laterally so as to pass through the lottery stand 12, one end of the lever shaft 41 is pivotally mounted with pulling arms 42 and 43, and the other end of the lever shaft 41 is fixed. A plate 44 is provided. Then, a wire 45 is attached to the pulling arm 42 to communicate with a clutch mechanism (not shown) that operates / stops the sorting plate 26, and a wire 46 is attached to the pulling arm 43 to communicate with the switching valve 37. . Further, a micro switch for position detection is provided at the turning position of the main lever 40, and a stop position micro switch 47 for operating the main lever 40 in a horizontally tilted position (stop position) and a main lever A discharge position micro switch 48 is provided which operates at a position where 40 is raised in the vertical direction (discharge position). Further, a circulation switching solenoid 49 that automatically switches to the circulation position when the main lever 40 is in the discharge position is provided opposite to the pressing piece 50 axially attached to the lever shaft 41.

In FIG. 1, reference numeral 51 is a control panel equipped with a main switch, various setting switches, and a control device, and reference numeral 52 is a take-off roll 6 and a bucket elevator 4.
Is the main motor that drives the. Next, various sensors and actuators connected to the control device will be described with reference to the block diagram of FIG. The control device composed of a micro computer has the level sensor S on the input side,
Opening detection sensor 18, stop position micro switch 47
The discharge position micro switch 48 is connected, and the paddy supply valve control motor 16, the alarm 55 and the circulation switching solenoid 49 are connected to the output side.

Next, the operation of the above embodiment will be described with reference to the main lever operation explanatory view of FIG. 4 and the flow charts of FIGS. In FIG. 4, the main lever 41
The operation will be described in order from the top, switching to position 0 (stop position), position 1 (circulation position), and position 2 (discharge position). At this time, the position 0 (stop position) is a position at which the machine is stopped at the start of operation and during operation, the sorting plate 26 is stopped, and the switching valve 37 is switched to the circulation side.
Position 1 (circulation position) is a position at the beginning of operation or when normal circulation is performed, and the selection plate 26 swings and the switching valve 37 is switched to the circulation side. Position 2 (discharging position) is a position for discharging the finished rice (brown rice), and the sorting plate 26 swings, and the switching valve 37 is switched to the discharging side.

Next, the operation during hulling work will be described with reference to FIG. When the worker turns on the power switch provided in the control panel 51 in step 102, the control device operates in step 103.
Detects whether the stop position switch 47 is ON or OFF, and determines whether or not the main lever 40 is at the stop position. Main lever 4 detects the ON signal of stop position switch 47
When it is confirmed that 0 is in the stop position, the operator pulls in the paddy from the supply hopper 5, and subsequently, in step 104, the main motor 52 is switched on. At this time, the clearance control of the pair of removing rolls 6 is initialized so that the removing ratio is set in advance. Then, in step 105, when the operator switches the main lever 40 to the position 1 (circulation position), the opening degree of the paddy feed amount control valve 15 is set to the initial value, and the paddy in the feed hopper 5 starts to be fed into the machine. . The polished rice removed by the pair of removing rolls 6 falls on the vibrating device 7 below the removing rolls 6, and the vibrating device 7 selects the air for the rice husks. Further, the polished rice falls on the shelf plate 8, passes through the screw conveyor 9 and the bucket elevator 4, and is stored in the mixed rice tank 19.

Next, in step 106, the control device detects whether the level of the polished rice reaches 70 to 80% of the capacity of the tank 19 by detecting ON / OFF of the level sensor S5. If the level sensor S5 is OFF, the flow goes to step 107 to set the opening degree of the paddy supply amount control valve 15 to the half open position. When the level sensor S5 is ON, the process goes to step 108 and the opening degree of the paddy supply amount control valve 15 is maintained at the initial value.

Next, in step 109, the swallowing speed of the raw material paddy (feeding speed of the raw material paddy) when the opening degree of the paddy supply amount control valve 15 is set to the half-open position is calculated. That is, among the level sensors S1 to S5, the level sensor that turns on first is X, and the level sensor that turns on next to X is Y. And the control device is the level sensor X
The time from turning ON to turning ON the next level sensor Y is measured, and the swallowing speed of the raw paddy is calculated.

In step 110, it is judged whether the polished rice has been stored up to the level sensor S6, and the level sensor S6 is stored.
When the paddy is stored up to step 111, the paddy supply amount control valve 15 is once fully closed to prevent the paddy from being swallowed. Then, in step 112, when the operator switches the main lever 40 to the position 2 (discharging position), the switching valve 37 switches to the discharging side, and the brown rice is discharged through the refined product discharging thrower 39.

At this time, in step 113, the decreasing speed of the rice grains from the tank 19 when the main lever 40 is set to the position 2 (discharging position) is calculated. That is, the amount of rice grains in the tank 19 decreases, the top level sensor S6 turns from ON to OFF, and the next level sensor S5 turns from ON to OF.
Measure the time until it reaches F, and calculate the rate of decrease of polished rice.

In step 114, the swallowing speed of the raw paddy in step 109 is compared with the decreasing speed of the polished rice in step 113 to calculate the opening degree at which a fixed amount of the polished rice in the tank 19 is stored. The calculation of the opening may be determined, for example, so that the swallowing speed of the raw rice and the decreasing speed of the polished rice match. Then, in step 115, the opening degree of the paddy supply amount control valve 15 is set.

The flow chart following step 116 (see FIG. 6) shows the adjustment of the opening when the storage amount of the mixed rice tank 19 approaches an empty state. When the storage amount of the mixed rice tank 19 approaches an empty state, the process goes to step 116, and ON / OFF of the tank level sensor S1 is detected. When the tank level sensor S1 is OFF, that is, when the storage amount of the tank 19 is empty, step 11
7, the circulation switching solenoid 49 is operated, and the main lever 40 is automatically switched from the position 2 (discharging position) to the position 1 (circulating position). Then, in step 118, an alarm is generated to notify the operator that the tank 19 has been emptied.

If the mixed rice tank 19 is not empty, the process proceeds from step 116 to step 119. Step 11
In 9, ON / OFF of the level sensor S6 is detected,
When the level sensor S6 is ON, the flow goes to step 120, and the paddy supply amount control valve 15 is fully closed to stop the supply of the paddy into the machine. When the level sensor S6 is OFF, the process goes to step 121.

From the above processing, it is found that the storage amount of the mixed rice tank 19 is in a normal state, and the next step 121
Then, the position of the main lever 40 is confirmed. Step 12
1, when the main lever 40 is in the position 1 (circulation position) or the position 2 (discharge position), the paddy supply amount control valve 1
In order to perform the opening / closing control of step 5, step 122 is reached, and when the main lever 40 is at position 0 (stop position) (for example, when the operator stops the machine during operation), step 128 is reached.

At step 122, the opening of the paddy supply amount control valve 15 is determined so that the amount of mixed rice is in the center of the tank.
That is, the time when the level sensor S changes is stored, the flow rate with respect to the current opening degree of the paddy supply amount control valve 15 is calculated, and the level rice S3 is turned ON and the level sensor S4 is turned OFF. Determine the storage amount of. In step 123, the paddy supply amount control valve 15 is opened and closed based on the opening determined in step 122.

When it is determined in step 121 that the machine has stopped, the process proceeds to step 128, in which the current opening of the paddy feed rate control valve 15 is stored, and in step 129 the paddy feed rate control valve 15 is fully closed. To do. Next, step 13
0, the main lever 40 is again in position 0 (stop position)
Is determined. Then, the operation of the machine is restarted, and the main lever 40 moves to position 1 (circulation position) or position 2
If it is confirmed to be in the (discharge position), the next step 13
To 1. At step 131, the level sensor S6 is turned off.
If N / OFF is determined and S6 is OFF, that is, if the tank storage amount is not near the full amount, the process proceeds to step 132, and the paddy supply amount control valve 15 is set to the opening degree stored in step 128.

In step 123, the paddy supply amount control valve 1
When the opening / closing control of 5 is completed, the process returns to the beginning of the flowchart again. When the storage amount of the tank 19 is empty, the alarm alarm of step 118 is being generated, and step 124
The route to cancel the alarm is set with. If an alarm is being generated in step 124, step 1
When the operator reaches 25 and the operator pushes the push button switch, the alarm alarm is canceled in step 127. When the worker forgets to press the push button switch in step 125, the process proceeds to step 126, and it is determined by the level sensor S1 whether or not the storage amount of the tank 19 is empty. When the storage amount of the tank 19 is larger than S1, step 127
The alarm alarm is canceled.

[0031]

As described above, according to the present invention, the level sensor for detecting the storage amount of the polished rice on the wall surface of the mixed rice tank, and the paddy supply amount adjustment for adjusting the amount of paddy supplied to the removing roll. Since the device and the control device for controlling the paddy supply amount adjusting device based on the detection value of the level sensor are provided, since the paddy supply amount adjusting device is controlled by the control device,
Compared with the conventional mechanical feedback control, the response of the control of the paddy supply amount adjusting device is quicker, and hunting can be eliminated. For example, the storage speed of the polished rice in the mixed rice tank during the circulation of brown rice and the discharge speed of the polished rice from the mixed rice tank during the discharge of brown rice are calculated, and the storage speed and the discharge speed are compared. Since the paddy supply amount adjusting device is controlled by the above, the control delay time can be calculated from the increase / decrease state of the polished rice in the mixed rice tank, and the paddy supply amount adjusting device can be controlled.

Since the conventional suspension tank using a spring is no longer required, the tank is fixed and miniaturized.
In addition, dust is no longer ejected from the tank.

[Brief description of drawings]

FIG. 1 is a front view showing a hulling and sorting machine of the present invention.

FIG. 2 is an enlarged perspective view of an essential part showing a paddy supply amount adjusting device of the present invention.

FIG. 3 is a block diagram showing a control device of the present invention.

FIG. 4 is an operation explanatory view of a main lever.

FIG. 5 is a flowchart of a control device.

FIG. 6 is a flowchart of a control device.

FIG. 7 is a vertical cross-sectional view showing a conventional paddy supply amount adjusting device.

[Explanation of symbols]

 1 hulling and sorting machine 2 hulling device 3 sorting device 4 bucket elevator 5 supply hopper 6 removing roll 7 vibrating device 8 shelf board 9 screw conveyor 10 2nd port 11 screw conveyor 12 rotating shaft 14 guide trough 15 paddy Supply amount control valve 16 Paddy supply valve control motor 17 Bush 18 Opening detection sensor 19 Mixed rice tank 20 Large diameter pulley 21 Small diameter pulley 22 Belt 23 Raw material rice supply port 24 Returned rice supply port 25 Returned rice bypass 26 Sorting plate 27 Average Separator 28 Paddy partition plate 29 Brown rice partition plate 30 Paddy discharge port 31 Mixed rice discharge port 32 Brown rice discharge port 33 Paddy discharge channel 34 Return paddy thrower 35 Brown rice discharge channel 36 Mixed rice discharge channel 37 Switching valve 38 Refined product discharge gutter 39 Refined product Discharge thrower 40 Main lever 41 Lever shaft 42 Tension arm 43 Tension arm 44 fixing plate 45 wire 46 wire 47 stop position micro switch 48 discharge position micro switch 49 solenoid 50 pressing piece 51 control panel 52 main motor 53 tank discharge valve 54 sensor shaft 55 alarm alarm S level sensor

Claims (5)

[Claims] 1. A hulling device provided with a pair of removing rolls,
A sorting device that sorts the polished rice that has been removed by the hulling device, a lifting device that connects the sorting device and the hulling device and feeds the polished rice to the sorting device, and the lifting device A switch for switching between circulation and discharge of brown rice at a branch of the mixed rice tank for storing the polished rice that has been pumped to and supplying it to the sorting device, and the brown rice discharging passage and the mixed rice discharging passage provided in the sorting device. In a paddy sorting machine provided with a device, a level sensor for detecting the amount of stored paddy rice on the wall surface of the mixed rice tank, and a paddy supply amount adjusting device for adjusting the amount of paddy to be supplied to the removing rolls, A control device for controlling the paddy supply amount adjusting device based on a detection value of the level sensor, and a paddy supply amount adjusting device of a paddy hull sorting machine. 2. The paddy supply amount adjusting device for a paddy hull sorting machine according to claim 1, wherein the level sensor is provided with a plurality of detection sensors in a longitudinal direction of a wall surface of the mixed rice tank. 3. The control device controls the storage speed of the polished rice in the mixed rice tank during circulation of brown rice from the detection signals of the at least two detection sensors, and the accumulated rice from the mixed rice tank during discharge of brown rice. 3. The paddy supply amount adjusting device for a paddy hull sorter according to claim 2, wherein the discharging speed is calculated, and the storage speed and the discharging speed are compared to control the paddy supply amount adjusting device. 4. The control device is connected with an alarm alarm for notifying an empty state of the mixed rice tank.
The paddy supply amount adjusting device of the paddy-scraper according to item 2 or 3. 5. The control device, when detecting the empty state of the mixed rice tank from the detection signal of the level sensor,
5. The paddy supply amount adjusting device for a paddy hull sorting machine according to claim 4, wherein the switching device is operated to automatically switch from discharge to circulation to notify the alarm.