JP3985364B2 - Feeding amount control device in grain drying device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a feed amount control device in a grain drying device.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, in the grain dryer, each mode of tensioning, drying, discharging, and stopping is switched, and based on this, starting and stopping of the circulation system motor provided in each of the grain circulation system or the feeding valve is executed. I was doing .
[0003]
However, for example, when a common switch is used for both the extension operation and the discharge operation, the operation of the feeding valve is unnecessary on the one hand, and the quick operation is required on the other hand. There is room for improvement.
[0004]
[Means for Solving the Problems]
In view of the above, the present invention has taken the following technical means. That is, the invention according to claim 1 is directed to the burner (5) while flowing down the left and right grain flow passages (9) that form the grains of the storage tank (2 ) in a V shape of the drying chamber (3 ). It is dried by applying hot air from the above, and is fed to the grain collection chamber (4) by a predetermined amount by forward and reverse rotation of the feed valve (10) at the lower part of the grain flow down passage (9) and returned to the storage tank (2) again. In the feed amount control device in the circulation type grain drying device that repeats the process, the feed motor (67) that intermittently drives the feed valve (10) forward and reversely and the grain fed to the cereal collection chamber (4) A circulation system motor (20 ) for returning the grains to the storage tank (2) is provided, and the operation control panel is operated to start both the feeding motor (67) and the circulation system motor (20) by at least an ON operation. Switch (41) , combustion switch for starting burner (5) Pitch (42), and arranged the stop switch (43) to stop the operation each part, the feeding valve (10) is notched opening a predetermined width of the cylindrical drum shape, faces the lower stop at the time of opening state When the drive motor (67) is driven to output, the feed valve (10) rotates forward and the opening is directed downward while taking in the grain in the left and right grain flow passage (9). At the position, the grain is discharged to the grain collection chamber ( 4), and then the feeding valve (10) is reversed to collect the grains in the left and right other grain flow passages (9) and gather at the position where the opening is downward. The chamber is discharged into the chamber (4), and the off time between the forward and reverse rotations of the feeding valve (10) is set to an off time T2 at the time of discharge operation after the drying operation from an off time T1 at the time of drying operation. and feeding amount control device in the grain drying apparatus and setting shorter
[0005]
[0006]
[0007]
[Effects of the invention]
When the operation switch (41) is turned on, the feeding motor (67) and the circulation motor (20) are activated, and when the combustion switch (42) is turned on, the burner (5) is activated and the grain flow passage (9) is opened. Dry the grain that flows down.
The grains in the grain flow passage (9) are discharged to the cereal collection chamber (4) in order by the feeding valve (10) that rotates intermittently forward and backward, respectively. In the drying operation, the off time T1 between the forward and reverse rotations of the feeding valve (10), the off time T2 in the discharge operation after receiving the drying end information, and the off time T1 in the drying operation. The forward / reverse rotation period of the feeding valve 10 is shortened to make the feeding amount larger.
Therefore, when a detection result such as a drying end signal or a discharge end signal is input, it is possible to estimate which work mode has been switched to, and change to a necessary circulation amount, thereby improving work efficiency.
[0008]
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. 1 is a machine frame of a grain dryer, and a storage tank 2, a drying room 3, and a grain collection room 4 are vertically installed in the machine frame from above, and among these, the drying room 3 is hot air that leads to a burner 5. The grain flow-down passages 9 and 9 are formed in a V shape between the chamber 6 and the air discharge chamber 8 communicating with the air discharge device 7, and forward and reverse of the feeding valve 10 provided at the lower part of each flow-down passage 9 and 9. It is the structure which dries hot grain on the grain which flows down every predetermined amount by rotation interlocking, and dries.
[0010]
In the outside of the machine frame 1, a groining machine 11 for raising and reducing the grains collected in one side of the cereal collection room 4 to the storage tank 2 is installed. The groining machine 11 is configured to wind a belt 14 with a bucket 13 between upper and lower pulleys 12 and 12, and the dried cereal transferred to one side by a lower transfer spiral 15 laid horizontally at the lower part of the grain collection chamber 4. It is configured so that the grains can be picked up and transferred to the upper part. Grains which are sown by the groining machine 11 and thrown at the upper part are guided to the start end side of the transfer basket 18 provided with the upper transfer spiral 17 through the throw opening 16. The grains horizontally transferred by the transfer spiral 17 are guided by a rotary diffusion plate 19 disposed at the upper center of the storage tank 2 and are diffused and dropped into the storage tank 2.
[0011]
The grain circulation system consisting of the above-described cerealing machine 11, upper and lower transfer spirals 15, 17 and the like is rotationally interlocked by a drive motor 20 at the lower corner of the machine frame. The motor 20 drive shaft is interlocked with a lower transfer spiral 15 via a counter pulley 21, and the rotation of the lower transfer spiral 15 rotates the bucket belt 14 of the grower 11 together with the elevator 11. The upper transfer spiral 17 can be interlocked by an interlock belt (not shown) between the upper pulley 12 and the upper transfer spiral 17.
[0012]
The side wall 22 at an appropriate height position of the groining machine 11 is provided with a supply port 23 so as to correspond to within the left and right interval portions of the forward and reverse strokes of the bucket belt 14, A moisture meter 24 is detachably provided. For example, the moisture meter 24 electrically crushes one of the sample grains between a pair of electrode rolls (not shown) that is placed under a feeding roll (not shown) of the supply port 23 and electrically measures its resistance value. It is the structure which processes and converts into a grain moisture value.
[0013]
On the front side of the machine frame 1, a connection guide frame 25 is provided across the left and right widths, and a detachable hot air generating drum 26 is provided on the front surface of the connection guide frame 25, and the burner 5 is accommodated inside the hot air generating drum 26. . The connection guide frame 25 opens guide ports 25 a and 25 a communicating with the hot air chamber 6. And while this connection guide frame 25 has a width equal to the left and right width of the machine frame 1, the hot air generating drum 26 occupies the center and the right side, and the left side where the groining machine 11 exists is excluded. ing. The burner 5 is in the form of a gun burner in the embodiment, a fan 29 provided integrally with the motor 27 shaft 28, a fan cover 30 covering the fan 29, and a combustion cylinder 32 that burns upon receiving kerosene fuel supply from an electromagnetic pump 31. Etc., and the main body of these burners 5 is placed horizontally by being offset to the lower right side of the hot air generating drum 26.
[0014]
A slightly small diameter connecting tube 33 is provided on the tip end side of the combustion tube 32 and communicates with a guide tube 34 having a large diameter horizontal tube shape. The guide tube 34 has a structure in which a short guide tube 35 is continuously provided on the upper surface side so that hot air accompanying a flame generated in the combustion tube 32 can be guided upward. The guide tube 34 and the guide tube 35 are provided in a state of being accommodated in a hot air duct 36 having a rectangular cross section disposed so as to face the square inlet 25b opened on the front side of the connection guide frame 25. 37 is a flange joint for fixing the hot air duct 36, 33a is a joint flange provided in the connection tube 33, and the connection tube 33 and the guide tube 34 are connected and fixed to the left and right with the side wall of the hot air duct 36 interposed therebetween. It is.
[0015]
A circular opening 30a is formed on the side surface of the fan cover 30, the opening area can be arbitrarily changed by adjusting the adjustment valve 30b, and the primary air introduction air volume can be changed and adjusted. Further, the secondary air is introduced through slits 26a, 26a,..., 36a, 36a... Formed in the front cover portion of the hot air generating body 26 and the hot air duct 36.
[0016]
In the hot air generating cylinder 26, the hot air duct 36 is disposed in the left half portion as described above, and the fan cover 30 and the combustion cylinder 33 of the burner 5 are laid out at one lower side. On one upper side, a control box 38 for performing control necessary for the drying operation is detachably fixed to the wall surface of the connection guide frame 25 in a suspended manner. The control box 38 is provided on the operation panel 40 with operation / combustion / stop operation mode switches 41, 42 and 43, finish moisture and filling amount setting switches 44 and 45, and an increase for setting the drying time.・ Decrease switches 46, 47, etc. are provided. 48 is an emergency stop switch, 49 is a display part. The front cover of the hot air generating cylinder 26 corresponding to the operation panel 40 has an opening 26b for operation.
[0017]
The exhaust device 7 is provided on the back side of the machine casing 1. The air exhaust device 7 includes a centrifugal fan 50 that rotates at a high speed, a fan body 51 that incorporates the fan, an air exhaust duct 52, and the like, and forms a circular opening 53 in the rear surface of the machine frame 1 so as to look into the air exhaust chamber 8. It is. The centrifugal fan 50 has a plurality of blades 56, 56... Arranged at a predetermined angle around the rotation shaft 55 so as to perform one-side suction, and the fan body 51 winds with the rotation of the centrifugal fan 50, and the circular opening described above. It is configured to release air from 53 upward.
[0018]
The exhaust duct 52 connected to the fan body 51 changes its opening in a horizontal direction, and both are circularly fitted. Therefore, the exhaust duct 52 is arranged in an arbitrary direction around the vertical axis. It is the structure which can adjust direction. A pulley 57 is provided at the outer end of the rotary shaft 55, and a belt 58 is wound around the pulley 57 between the second counter pulley 21 a provided integrally with the counter pulley 21 and the pulley 57, and is linked to the circulation system motor 20. It is said.
[0019]
FIG. 9 is a control block diagram. The control unit 61 of the control box 38 includes operation mode switches 41, 42, and 43 provided on the operation panel 40, finish moisture, and amount of filling. In addition to the input signals of the setting switches 44 and 45, the increase / decrease switches 46 and 47 for setting the drying time, the valve sensor 62, the moisture meter 24, the load detector 63 of the circulation motor 20, and the hot air temperature sensor 64 , Various detection signals such as the outside air temperature sensor 65 and the air volume sensor 66 are input. On the other hand, the output signals include a circulation system motor 20 for driving the circulation system and exhaust device 7 such as the elevator, a feed motor 67 drive signal for the feed valve 10, a burner 5 drive signal, a display output signal of the display unit 49, and the like. .
[0020]
When the operation switch 41 is turned on, the circulation system motor 20 and the feeding motor 67 are activated. When the combustion switch 42 is turned on, an activation signal is output to the burner system, and the burner enters an ignition combustion state. When the stop switch 43 is turned on, each part in the activated state is stopped. Therefore, the operation switch 41 is turned on when the so-called tension mode and the discharge mode are set, and the combustion switch 42 is turned on in addition to the operation switch 41 operation to set the drying mode.
[0021]
The feeding motor 67 is controlled and output to intermittently drive forward and reverse rotation. In other words, the feeding valve 10 having a cylindrical drum shape with a predetermined width cut open is always in a standby state with the opening facing downward, and when it is controlled and output to the feeding motor 67, it first rotates 360 degrees forward ( For example, a right rotation is performed), and the grain reaches the position where the opening is directed downward again while taking in the grain of the left grain flow passage 9 and is discharged into the cereal collection chamber 4. The position detection is performed by the valve sensor 62 including a reed switch on the valve rotation shaft side and a fixed magnetic body, for example. Immediately after the forward rotation of 360 degrees, the rotation is reversed 360 degrees (left rotation), and the grains are taken in the right grain flow passage 9 and discharged again with the opening facing downward. A control output is made to the feeding motor 67 so that the forward / reverse movement is executed at predetermined time intervals. Further, as described later, the time between forward and reverse rotation and the next forward and backward rotation, that is, the off time is controlled. This change in off-time is equivalent to long / short cycle change control.
[0022]
Moreover, if this control part 61 determines with finishing moisture having been reached by the detection signal process from the moisture meter 24, it will output a stop signal. In response to this stop signal, the circulation motor 20, the feeding motor 67, or the burner 5 stops its operation. Next, the circulation amount control will be described with reference to a flowchart.
[0023]
The circulation amount can be changed by changing the forward / reverse interlocking period of the feeding valve 10 to a larger or smaller period, and the period is based on the timing of the forward signal / reverse signal to the feeding motor 67. Now, the amount of circulation control during the operation of each part by operating the operation switch 41 is based on the result of the detecting means for detecting the state of the circulation flow of the grains, and the switches 41, 42, It may be based on a combination of 43.
[0024]
As an example of the case based on the detecting means for detecting the state of the circulation flow of the grain, there is a case where drying completion information is input as shown in FIG. When the operation switch 41 is on, the circulation system motor 20 is activated. Here, when the drying end information, that is, the information determined to have reached the finishing moisture by the detection signal processing from the moisture meter 24, the off time of the feeding motor 67 is set to T2, and the drying end information is not obtained. At times, the off time is maintained at T1. Here, the relationship T2 <T1 is set, and setting T2 in the end means that the forward / reverse rotation period of the feed valve 10 is shortened and the feed amount is increased. That is, when the operation switch 41 is turned on to obtain information that the grain has been dried during the stretch operation or the ventilation operation, the forward / reverse cycle of the feed valve 10 is shortened to reduce the feed amount. It will be large and will shift to discharge operation. In the discharge operation, the discharge shutter 70 provided at the opening on the start end side of the upper spiral transfer rod 18 is opened by rotating the pulling string 71 and the like from the outside. An automatic shutter configuration that automatically opens upon receipt of a drying end signal may also be used. In this way, the operation of the feeding motor 67 is controlled, and the stop switch 43 is turned on, or the discharge is terminated in accordance with the detection of the outer flow detector, and both the circulation system motor 20 and the feeding motor 67 are stopped. To do.
[0025]
Similarly, there is FIG. 9 as another example in the case of being based on detection means for detecting the state of circulation flow of grains. That is, when the discharge end information is input. When the operation switch 41 is turned on, the circulation system motor 20 is activated. Next, the operation information is read from the memory, the discharge end data is determined, and when there is the data, the feeding motor 67 is controlled to stop. When there is no data, the feeding motor 67 is continuously driven. Therefore, the feed amount is set to zero based on the discharge end information. The determination of the discharge end information is executed as follows. In other words, the load current value A of the circulatory system motor 20 is read and the average motor current value AM is calculated, and compared with the motor current value A, A <AM × κ (κ = 0.8 to 0.9) is obtained. It is determined whether or not it is satisfied, and when this state continues for a certain time, it is estimated that the discharge is completed (FIG. 10).
[0026]
Next, an example in the case of being based on a combination of switches 41, 42, 43 such as operation, combustion, and stop will be described. FIG. 11 shows the feed amount change control when the combustion switch 42 is turned on during operation of each part based on the operation of the operation switch 41. When the operation switch 41 is turned on, the forward / reverse rotation period of the feeding motor 67 is set to a long period. Based on this setting, the feeding valve 10 rotates forward and backward. In other words, the tension operation is performed in a state where a part of the grain is fed out, and so-called circulation tension is achieved. When the combustion switch 42 is turned on during operation, the feeding motor 67 is once stopped, and the forward / reverse rotation period is changed to a short period. Thus, the drying operation is started. When it is determined that the drying is finished by monitoring the moisture value, the burner 5 system output is turned off, and the feeding motor 67 and the circulation motor 20 are also stopped.
[0027]
In addition, 68 is an insertion opening opened on the side of the machine casing 1, and 69 is a side hopper that opens and closes the insertion opening 68 and serves as a bag loading base. The input grain from the side hopper 69 is configured to be stuck into the storage tank 2 via the lower transfer spiral 15, the elevator 11, and the upper transfer spiral 17. The operation of the above example will be described.
[0028]
When the operation switch 41 is turned on, the circulation system motor 20 and the feeding motor 67 are activated. A predetermined amount of grain is put into the storage tank 2 from the side hopper 69 by using the grain raising machine 11, but the grain once put into the storage tank 2 flows down with the rotation of the feeding valve 10 and is stored again. A so-called circulation tension is returned to the tank 2. Meanwhile, since the air exhaust device 7 is driven, the grains in the flow-down passages 9 and 9 are ventilated and preliminary drying is performed.
[0029]
Next, the grain type, finishing moisture, etc. are set and the drying operation is started. When the combustion switch 42 is turned on (when the stop switch 43 is turned on once and the operation switch 41 is turned on after the completion of the tensioning operation), the drive signal is output to the burner 5, the burner 5 is ignited, and the hot air Start drying. That is, fuel is supplied from the electromagnetic pump 31, and an unillustrated spark plug is operated to ignite and generate a flame. The flame is extended to the combustion cylinder 32, the connection cylinder 33, and the guide cylinder 34 by the ventilation of primary air introduced from the fan cover 30 adjusted appropriately. The radiant heat generated by this flame is guided by the upper guide cylinder 35 and escapes upward, and circulates through the hot air chamber as the centrifugal fan 50 rotates.
[0030]
Along with the rotation of the circulation motor 20, together with the centrifugal fan 50, the lower transfer spiral 15, the elevator 11, the upper transfer spiral 17, the diffusion plate 19, and the air exhaust device are rotationally interlocked. Further, since the motor 67 is also in a driving state, the feeding valve 10 is rotated in the forward and reverse directions, and the grains in the flow-down passages 9 and 9 are caused to flow down while discharging the grains accumulated in the valve 10 to the lower transfer spiral 15. Is. Accordingly, the grains in the storage tank 2 are exposed to hot air while flowing down the drying chamber 3 every predetermined amount, and reach the cereal collection chamber 4. The grain that has been subjected to hot air is transferred to one side by the lower transfer spiral 15, cerealed by the groining machine 11, taken over by the upper transfer spiral 17, and reaches the storage tank 2 again. receive. When such a process is repeated and a preset moisture value is reached, drying is completed.
[0031]
When the desired drying operation is completed, the discharging operation for discharging the grain is started. When the operation switch 41 is turned on and the discharge shutter 70 is opened, the grains are discharged out of the machine. In the above series of work steps, as described above, the operation switch 41 is turned on and the operation of each part is operated, based on the result of the detecting means for detecting the state of the circulation flow of the grains, or each switch for operation, combustion, stop, etc. Circulation amount control is performed based on the combination of 41, 42, and 43.
[0032]
A ventilation operation can also be performed instead of the drying operation. If the circulation is stopped and the operation switch 41 is turned on as it is, the ventilation operation without the burner 5 combustion is performed. By the way, when the normal expiration sensor 72 is turned on, each part of the operation stops after a predetermined time, for example, 60 seconds elapses. This is to prevent excessive stretching. Therefore, when this expiration sensor 72 is detected, the ventilation operation cannot be continued. Therefore, the ventilation operation after the activation of the expiration sensor 72 is performed as follows.
[0033]
First, in the first configuration, during the operation of each part based on the ON operation of the operation switch 41, even if the full sensor 72 provided in the storage tank 2 detects the full quantity, the operation of the circulation system motor 20 and the feeding motor 67 is continued. The output is controlled as much as possible. At the same time, an indication that it has expired is displayed. By doing so, since the operator can recognize that the inside of the tank 2 is in an expired state, the operation by the operation switch 41 can be continued, that is, the ventilation operation can be performed without fear of overloading ( FIG. 12).
[0034]
In the second configuration, the motors 20 and 67 are operated even when the expiration sensor 72 detects the full amount when the operation switch 41 is turned on again after the operation is stopped by operating the stop switch 43 during operation of each part based on the operation of the operation switch 41. It is configured not to stop. The stop by the stop switch 43 is a so-called manual stop, and the operator recognizes the expiration. In addition, since the operation switch 41 is turned on again by the operator, the ventilation operation is intended (FIG. 13).
[0035]
In the third configuration, the predetermined time is changed in a direction of shortening. That is, after a predetermined time t1 (for example, 60 seconds) has elapsed in the first expiration detection, each unit stops. Next, when the operation switch 41 is pressed to perform additional tensioning, excessive tensioning can be prevented unexpectedly by setting the predetermined time until the stop after the expiration detection to t1−t2 (for example, 40 seconds). When the operation is stopped again and the operation switch 41 is turned on, the operation stops at t1-2t2 (for example, 20 seconds). Further, even if the next operation switch 41 is turned on, the operation is continued without stopping at a predetermined time. That is, ventilation operation can be performed (FIG. 14).
[0036]
As described above, in the grain dryer, in which the grain insertion and the grain discharge are performed by the same operation switch 41, the circulation motor 20 and the feeding motor regardless of whether the expiration sensor 72 is activated or not. By continuing operation of 67, ventilation operation is possible.
[Brief description of the drawings]
FIG. 1 is a front sectional view of a dryer main body.
FIG. 2 is a front view of a dryer main body.
FIG. 3 is an enlarged view of the front of the dryer.
FIG. 4 is a side view thereof.
FIG. 5 is a dryer rear view.
FIG. 6 is a front view of an operation panel surface.
FIG. 7 is a control block diagram.
FIG. 8 is a flowchart.
FIG. 9 is a flowchart.
FIG. 10 is a flowchart.
FIG. 11 is a flowchart.
FIG. 12 is a flowchart.
FIG. 13 is a flowchart.
FIG. 14 is a flowchart.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Machine frame, 2 ... Storage tank, 3 ... Drying room, 4 ... Grain collection room, 5 ... Burner body, 6 ... Hot air room, 7 ... Air exhaust apparatus, 8 ... Air exhaust room, 9, 9 ... Grain flow down Passage 10, feeding valve 11, threshing machine 12, 12 pulley, 13 bucket, 14 bucket belt, 15 lower transfer spiral, 16 spout opening, 17 upper transfer spiral, 18 transfer １９, 19 ... Rotating diffuser, 20 ... Drive motor, 21 ... Counter pulley, 22 ... Side wall, 23 ... Supply port, 24 ... Moisture meter, 25 ... Connection guide frame, 26 ... Hot air generating cylinder, 27 ... Motor, 28 ... shaft, 29 ... fan, 30 ... fan cover, 31 ... electromagnetic pump, 32 ... combustion cylinder, 33 ... connection cylinder, 34 ... guide cylinder, 35 ... guide cylinder, 36 ... hot air duct, 37 ... flange joint, 38 ... Control box, 40 ... Control panel, 41, 42, 43 ... Operation mode Switch, 44, 45 ... setting switch, 46, 47 ... increase / decrease switch, 48 ... emergency stop switch, 49 ... display unit, 50 ... centrifugal fan, 51 ... fan body, 52 ... exhaust duct, 53 ... circular opening, 55 ... Rotating shaft, 56 ... Blade, 57 ... 57, 58 ... Belt, 61 ... Controller, 62 ... Valve sensor, 64 ... Hot air temperature sensor, 65 ... Outside air temperature sensor, 66 ... Air volume sensor, 67 ... Feeding motor, 68 ... tension port, 69 ... side hopper, 70 ... discharge shutter, 71 ... drawstring, 72 ... expiration sensor

Claims (1)

The grain storage tank (2) section reacted with hot air by a burner (5) while flowing down the grain flowing down passage of the right and left (9) for forming the V-shape of the drying chamber (3) dried, grains feeding a predetermined amount for each current Kokushitsu (4) by forward and reverse rotation of the feeding valve at the bottom of the flow-down passage (9) (10), feeding the circulating grain drying apparatus to repeat the step of returning again storage tank (2) In the quantity control device,
A feeding motor (67) for intermittently rotating the feeding valve (10) forward and backward, and a circulation motor (20) for returning the grain fed to the cereal collection chamber (4) to the storage tank (2 ); The operation control panel is provided with an operation switch (41) for starting both the feeding motor (67) and the circulation motor (20) at least by an ON operation, and a combustion switch (42 ) for starting the burner (5). ) And a stop switch (43) for stopping each part of operation ,
The feeding valve (10) has a cylindrical drum shape with a predetermined width and is opened, and when stopped, the drawing valve (10) stands by in a state in which the opening faces downward. ) Rotates forward and takes in the grain in the left and right side grain flow passage (9) and discharges it to the collection chamber (4) at a position where the opening is downward, and then the feeding valve (10) is reversed. Then, while taking in the grain in the grain flow passage (9) on the other side of the left and right sides, the grain is discharged to the grain collection chamber (4) at a position where the opening faces downward, and forward and reverse of the feeding valve (10) The feed amount control device in the grain drying device is characterized in that the off time between and is set shorter than the off time T1 during the drying operation, and the off time T2 during the discharging operation after the drying is finished .

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