JP6394546B2 - Grain dryer control equipment - Google Patents

Description

  The present invention relates to a control device for a grain dryer.

  Circulating grain dryers are mainly used for straw (rice) and wheat. Patent Document 1 describes a so-called general-purpose dryer capable of drying buckwheat and soybeans in addition to straw and wheat.

Japanese Patent No. 3694234

  Since the diameter and nature of grains differ between straw, wheat and soybeans, the circulation rate and moisture meter used are different.

  The patent applicant has now completed the invention related to the earlier patent application, that is, the invention for smoothly performing the drying operation of beans in a grain dryer for drying various grains. is there.

  The present invention takes the following technical means in order to solve the problems.

The invention described in claim 1
A control unit (21) is built in the box (14), an operation switch on the front of the box (14), a display device (20) for displaying the operation status, and a grain for selecting a grain type to be dried. Grain drying for providing a type selection switch (19), providing a connector (K) for wiring connection on the outer periphery of the box (14), and driving and controlling the circulation mechanism motor (23) for driving the grain circulation mechanism (J) In the control device of the machine,
A moisture meter is provided to measure the moisture value by collecting the spilled grain during circulation of the grain circulation mechanism (J),
When the control unit (21) detects that the circulation mechanism motor (23) is connected to the connector (K) via the inverter (24), the grain type selection switch (19) Both wheat and bean drying operation can be selected,
When the bean drying operation is selected by the grain type selection switch (19), the rotation speed of the grain circulation mechanism (J) is set to the rotation speed of the normal drying operation at the time of non-moisture value measurement during the moisture value measurement time. With a higher function,
When the control unit (21) detects that the circulation mechanism motor (23) is connected to the connector (K) without the inverter (24), the selection of the bean drying operation by the grain type selection switch (19) is restricted. It is set as the control apparatus of the grain dryer characterized by having a function.

The invention according to claim 2
A control unit (21) is built in the box (14), an operation switch on the front of the box (14), a display device (20) for displaying the operation status, and a grain for selecting a grain type to be dried. A type selection switch (19) is provided, a connector (K) for wiring connection is provided on the outer periphery of the box (14), and a circulation mechanism motor (23) for driving the grain circulation mechanism (J) for circulating the grains is driven. In the control device of the grain dryer to control,
A moisture meter is provided to measure the moisture value by collecting the spilled grain during circulation of the grain circulation mechanism (J),
When the control unit (21) detects that the circulation mechanism motor (23) is connected to the connector (K) via the inverter (24), the grain type selection switch (19) Both wheat and bean drying operation can be selected,
When the bean drying operation is selected by the grain type selection switch (19),
If the moisture measurement does not end even after the preset grain uptake time after the moisture meter starts measuring the moisture value, increase the rotation speed of the grain circulation mechanism (J). The moisture value measurement is continued, and when the moisture meter finishes measuring the moisture value, the rotation speed of the grain circulation mechanism (J) is lowered and the rotation speed of the normal drying operation at the time of non-moisture value measurement is restored. Prepared,
When the control unit (21) detects that the circulation mechanism motor (23) is connected to the connector (K) without the inverter (24), the selection of the bean drying operation by the grain type selection switch (19) is restricted. It is set as the control apparatus of the grain dryer characterized by providing a function.

  According to the first aspect of the invention, based on the characteristic configuration of the claim, the damage to the soybeans caused by drying the soybeans without causing the circulation mechanism motor (23) to drop at a low speed by the inverter (24). Can be prevented. For users who do not require the drying operation of beans, a general-purpose grain dryer without the inverter 24 can be shipped, and the control unit (21) can be shared and configured at low cost. In addition, during the drying operation of the beans, the moisture content measurement can be completed within a predetermined time by appropriately adjusting the number of grains measured by the moisture meter, and the drying operation control can be optimized. During the drying operation at the time of measurement, by lowering the rotation speed of the grain circulation mechanism (J), the drying operation can be made efficient while reducing noise and reducing damage to the beans.

  According to invention of Claim 2, based on the characteristic structure of the claim | claim, the damage | wound of a soybean by drying soybean in the state which cannot drop a circulation mechanism motor (23) with an inverter (24) at low speed is carried out. Can be prevented. In addition, for users who do not require soybean drying operation, shipment without an inverter (24) is possible, and the control unit (21) can be shared and can be configured at low cost. In addition, when the amount of beans taken into the moisture meter during the drying operation of the beans is small, the amount of beans is automatically increased, and the measurement of the moisture value of the beans is completed within a predetermined time so that the drying operation control is properly performed. can do.

Illustration explaining the inside of the grain dryer as seen from the side Appearance perspective view of grain dryer Diagram explaining the inside of the grain dryer as seen from the front Diagram showing the internal structure of the moisture meter for buckwheat Diagram showing the operation panel Diagram showing control device for grain dryer for straw and wheat Diagram showing control device for general-purpose grain dryer Grain dryer transmission mechanism diagram Perspective view showing control device and combustion burner Table showing transport capacity, circulation volume, and air volume for each grain type

  The grain dryer according to the embodiment of the present invention will be described below.

  The grain dryer is provided with a storage chamber 1 for storing grains, a drying chamber 2 for drying, a combustion burner 3, an exhaust fan 4 for sucking and discharging hot air, and a circulation mechanism J for circulating the grains.

  The grain circulation mechanism J includes a lower spiral 5 that transports the grain fed from the drying chamber 2, an elevator 6 that lifts the grain, an upper spiral 7 that transports the grain to the storage chamber 1, and the grain into the storage chamber 1. Dispersion blades 8 for dispersion are provided. The grain circulation mechanism J is configured to be driven by a circulation mechanism motor 23, and the circulation mechanism motor 23 is configured to transmit power to the upper part of the elevator 6 and to be transmitted from the elevator 6 to the upper spiral 7, the dispersion blade 8 and the lower spiral 5. .

  At the lower end of the drying chamber 2, a feeding valve 9 that feeds the grains from the drying chamber 2 to the lower spiral 5 is provided and is rotated by a feeding valve motor 10.

  The exhaust fan 4 is configured to rotate by an exhaust fan motor 11.

  The elevator 6 is provided with a soba moisture meter 12 and a bean moisture meter 13.

  The buckwheat moisture meter 12 is a known configuration in which sample grains (buck, wheat, buckwheat) collected from the elevator 6 are crushed by a pair of electrode rolls 25, and the moisture value is converted from the voltage value. 13 is also a known configuration in which the sample grain (soybean) is crushed by a pair of electrode rollers, and the moisture value is converted from the voltage value, with the structure substantially the same as the soba moisture meter 12. Note that the moisture meter may be a common type capable of measuring any moisture value of straw, wheat, buckwheat, and soybean.

  Next, the configuration of the control device S will be described.

  The grain dryer control device S of the present embodiment has an operation switch such as a tension switch 15, a ventilation switch 16, a drying switch 17, a stop switch 18, and the like, Grain type selection switch 19 for selecting soy drying operation, display device 20 for displaying operation information such as moisture value, moisture setting switch 28, tension setting switch 29, numerical value increasing / decreasing switch 30 for setting a target numerical value, etc. An operation panel 26 is provided. In addition, the control unit 21 and the electromagnetic contactor 27 for the circulation mechanism motor 23 are built in the box body 14, and a number of connectors K for connecting various harnesses are provided on the outer periphery of the box body 14.

  The grain type selection switch 19 of the present embodiment is configured such that each time the switch is pressed, the lighting display of the LED lamp 22 is sequentially moved, and selection of buckwheat, wheat, buckwheat, and soybean is sequentially changed.

  The control device S is connected to the connector K with the buckwheat moisture meter 12, the bean moisture meter 13, the feed valve motor 10, the exhaust air fan motor 11, and the like. The circulation mechanism motor 23 is connected to the inverter 24, and the inverter 24 is connected to the connector K of the control device S.

  Next, an outline of the drying operation will be described.

  When the operator presses the tension switch 15, the circulation mechanism motor 23 starts to be driven, the grain circulation mechanism J is driven, the tension grain passes through the elevator 6 and the upper spiral 7, and the dispersion blade 8 feeds the grain into the storage chamber 1. A tension operation is performed. When the stop switch 18 is pressed, the tension operation is stopped.

  The operator selects the grain type stuck by the grain type selection switch 19. Next, when the target moisture value is set by the moisture setting switch 28 and the numerical value increase / decrease switch 30 and the drying switch 17 is pressed, the circulation mechanism motor 23, the combustion burner 3, the exhaust air fan motor 11, and the feed valve motor 10 start driving. The drying operation is started.

  Grains are exposed to the hot air generated by the burner 3 of the drying chamber 2 and fed to the lower spiral 5 by a certain amount by a feeding valve 9 that operates intermittently. Grains conveyed by the lower spiral 5 are supplied to the storage chamber 1 by the dispersing blades 8 through the elevator 6 and the upper spiral 7. Then, the drying operation is performed while circulating until the target moisture value is reached. A number of bucket conveyors 31 are provided inside the elevator 6, and sample grains spilled from the bucket conveyor 31 enter the moisture meter 12 for soba or the moisture meter 13 for beans, and the moisture value at set intervals (for example, every 15 minutes). Measure.

  The circulation mechanism motor 23 is driven at a variable speed by an inverter 24. The feeding valve motor 10 is intermittently driven to alternately drive (ON) and stop (OFF), but the amount of grain to be fed decreases as the OFF time is longer or the ON time is shorter. When drying the buckwheat / wheat / soba, the circulation mechanism motor 23 is driven relatively fast, and the control unit 21 controls the OFF time of the feed valve motor 10 to be relatively short, whereby the amount of circulated grains per hour. To be relatively large.

  In the case of soybeans, the circulation mechanism motor 23 is driven relatively slowly, and the control unit 21 controls the OFF time of the feeding valve motor 10 to make the amount of circulated grains per hour relatively small. . Soybeans have a relatively small amount of circulated grains because the surface is more easily damaged than buckwheat, wheat and buckwheat.

  When the moisture meter (12, 13) detects that the target moisture value has been reached, the drying operation is automatically stopped.

  The characteristics of the soba drying operation will be described with reference to FIG.

  Soba drives the circulation mechanism motor 23 relatively fast and reduces the feeding amount by shortening the ON time of the feeding valve (or extending the OFF time). This is because buckwheat is easy to be damaged compared to buckwheat and wheat, so the feeding amount is reduced. On the other hand, it is difficult to disperse by the dispersion blade 9, so that the circulation mechanism motor 23 is driven relatively fast, so that the dispersion blade 9 rotates faster. This is because the buckwheat is diffused throughout the storage chamber 1.

  Next, features of the control device S of the present embodiment will be described below.

  When the control unit 21 detects that the inverter 24 is connected, the grain type selection switch 19 is configured to select any one of the drying operation of buckwheat, wheat, buckwheat, and soybean, but without connecting the inverter 24, the circulation mechanism motor 23 When the control unit 21 detects that the harness is directly connected to the connector K of the control device S, the grain type selection switch 19 can select buckwheat / wheat / soba, but restricts the selection of soybeans. That is, every time the grain type selection switch 19 is pressed, the buckwheat / wheat / soba and LED lamps 22 are changed, and then the mode returns to the straw mode.

  Thereby, damage to soybeans caused by drying soybeans in a state where the inverter 24 cannot drop the circulation mechanism motor 23 at a low speed can be prevented. Further, for users who do not need soybeans, shipment without the inverter 24 is possible, and the control device S can be shared and can be configured at low cost.

  Next, the relationship between the moisture meter for buckwheat 12, the moisture meter for soybean 13 and the drying operation in a state where the inverter 24 is mounted will be described.

  When the control unit 21 detects that both the buckwheat moisture meter 12 and the bean moisture meter 13 are connected to the connector K, any of the drying operation of buckwheat, wheat, buckwheat, and soybeans by the grain type selection switch 19 can be selected. And

  Further, when detecting that the buckwheat moisture meter 12 is connected and detecting that the bean moisture meter 13 is not connected, selection of the soybean drying operation by the grain selection switch 19 is restricted. Alternatively, when it is detected that the buckwheat moisture meter 12 is not connected, and when the bean moisture meter 13 is detected, selection of the drying operation of buckwheat, wheat, and buckwheat by the grain type selection switch 19 is restricted. Thereby, the drying operation of soybean can be prevented in a state where the moisture meter for soybean 13 is not attached. Moreover, it becomes possible to ship to the user who does not need the drying operation of soybeans, without attaching the moisture meter 13 for soybeans, and the control apparatus S can be shared and it becomes an inexpensive structure.

  Another embodiment of the relationship between the soba moisture meter 12, the soybean moisture meter 13, and the drying operation will be described.

  When detecting that the moisture meter for soba 12 is connected and detecting that the moisture meter for soybean 13 is not connected, the soba, oat and soba noodles perform a drying operation based on the moisture meter for soba 12 and soy Drying operation based on timer control is performed.

  Further, when it is detected that the moisture meter for soba 12 is not connected, and when it is detected that the moisture meter for soybean 13 is connected, the soy and wheat are dried based on the timer control, and the moisture meter for soybean is 13. Drying operation based on When it is detected that both the moisture meter for buckwheat 12 and the moisture meter for soybean 13 are not connected, any drying operation of buckwheat, wheat, buckwheat, and soybean is performed by timer control. Thereby, even if the moisture meter (12, 13) cannot be used due to a temporary failure or the like, the drying operation can be performed.

  For example, the timer control may be configured such that when the drying switch 17 is operated, a drying operation is performed for a set time (for example, 3 hours) and stopped, or an arbitrary drying time can be set by the numerical value increase / decrease switch 30.

  In addition, it is good also as a structure which displays abnormally, when any of the moisture meter 12 for buckwheat, the moisture meter 13 for beans, and the inverter 24 is not connected.

  Next, moisture measurement measurement control in soybean drying work will be described.

  In the general-purpose grain dryer that controls the rotation speed of the grain circulation mechanism J by the inverter 24, in the case of soybean drying work, the rotation speed of the grain circulation mechanism J is set to the normal drying work during the moisture value measurement time of the soybean moisture meter 13. I try to make it higher.

  In the soybean moisture meter 13 that measures the moisture value by using the spilled grains from the soybean elevator 6, during the moisture value measurement, the rotational speed of the grain circulation mechanism J is increased to increase the spilled grains for a predetermined time. It is possible to finish the measurement of the moisture value and to optimize the drying control.

  In addition, during normal drying operations where moisture content is not measured, lowering the rotation speed of the grain circulation mechanism J can reduce noise and reduce soybean damage, while speeding up moisture measurement and performing proper drying operations. it can.

  Next, another embodiment will be described.

  In the moisture meter control device of the general-purpose grain dryer, when it is determined that the grain uptake time is longer than a preset time after the soybean moisture meter 13 starts measuring the moisture value, the grain circulation mechanism J When the water content measurement operation of the soybean moisture meter 13 is finished, the rotational speed of the grain circulation mechanism J is lowered to return to the normal rotational speed.

  According to the said structure, when the amount of soybean intake to the soybean moisture meter 13 in the soybean drying operation is small, the amount of soybean intake is automatically increased, and the moisture value of soybean can be measured in a timely manner.

12 Moisture meter for buckwheat 13 Moisture meter for beans 14 Box 15 Tightening switch 16 Ventilation operation switch 17 Drying switch 19 Grain type selection switch 20 Display device
21 Control Unit 23 Circulation Mechanism Motor 24 Inverter J Grain Circulation Mechanism K Connector

Claims (2)

A control unit (21) is built in the box (14), an operation switch on the front of the box (14), a display device (20) for displaying the operation status, and a grain for selecting a grain type to be dried. Grain drying for providing a type selection switch (19), providing a connector (K) for wiring connection on the outer periphery of the box (14), and driving and controlling the circulation mechanism motor (23) for driving the grain circulation mechanism (J) In the control device of the machine,
A moisture meter is provided to measure the moisture value by collecting the spilled grain during circulation of the grain circulation mechanism (J),
When the control unit (21) detects that the circulation mechanism motor (23) is connected to the connector (K) via the inverter (24), the grain type selection switch (19) Both wheat and bean drying operation can be selected,
When the bean drying operation is selected by the grain type selection switch (19), the rotation speed of the grain circulation mechanism (J) is set to the rotation speed of the normal drying operation at the time of non-moisture value measurement during the moisture value measurement time. With a higher function,
When the control unit (21) detects that the circulation mechanism motor (23) is connected to the connector (K) without the inverter (24), the selection of the bean drying operation by the grain type selection switch (19) is restricted. Grain dryer control device characterized by having a function. A control unit (21) is built in the box (14), an operation switch on the front of the box (14), a display device (20) for displaying the operation status, and a grain for selecting a grain type to be dried. A type selection switch (19) is provided, a connector (K) for wiring connection is provided on the outer periphery of the box (14), and a circulation mechanism motor (23) for driving the grain circulation mechanism (J) for circulating the grains is driven. In the control device of the grain dryer to control,
A moisture meter is provided to measure the moisture value by collecting the spilled grain during circulation of the grain circulation mechanism (J),
When the control unit (21) detects that the circulation mechanism motor (23) is connected to the connector (K) via the inverter (24), the grain type selection switch (19) Both wheat and bean drying operation can be selected,
When the bean drying operation is selected by the grain type selection switch (19),
If the moisture measurement does not end even after the preset grain uptake time after the moisture meter starts measuring the moisture value, increase the rotation speed of the grain circulation mechanism (J). The moisture value measurement is continued, and when the moisture meter finishes measuring the moisture value, the rotation speed of the grain circulation mechanism (J) is lowered and the rotation speed of the normal drying operation at the time of non-moisture value measurement is restored. Prepared,
When the control unit (21) detects that the circulation mechanism motor (23) is connected to the connector (K) without the inverter (24), the selection of the bean drying operation by the grain type selection switch (19) is restricted. A grain dryer control device having a function.

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