JP2008209053A - Grain drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display exact abnormality countermeasures by estimating and setting various cases where failure and abnormal situation may occur after the installation of a drying machine, and with the lapse of day and time after the start of an operation. <P>SOLUTION: The abnormality processing device of this grain drying machine is constituted to display contents of inspection according to a lapse time of a drying operation by detecting abnormality of motors and sensors of an elevator, a fan and the like of the drying machine during a grain drying operation time. The time of drying operation is constantly detected and integrated by a hour meter and the like when the drying machine is installed and its drying operation is started. When the abnormality occurs in any of these motors and sensors, the occurrence of the abnormality is displayed on a display portion, and the contents of inspection determined in advance according to the drying operation use time by the hour meter at a time point of the occurrence of abnormality, are displayed on the display portion. A worker sees the displayed contents on the display portion, and checks abnormal parts to perform maintenance and repair. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a grain dryer.

Technology that displays liquid crystal display of where and how abnormalities occur in a grain dryer and how to deal with these abnormalities (See, for example, Patent Document 1).
Japanese Patent Laid-Open No. 10-28859 (page 2, FIG. 1).

  Even in the display form as in the reference technique, it is difficult to set the determination criteria in advance. Therefore, the present invention may often become a failure or abnormal situation depending on the installation of the dryer, the day after the start of operation, or the passage of time. It displays the coping method.

  According to the first aspect of the present invention, any one of the grain dryers provided with the operation panel 19 provided with the LCD display unit 20 and the integrated time detecting means (G) for detecting the integrated operation time can be selected when the power is turned on. When an abnormality occurs in the motors M1, M4 or the sensors 29, 30, 31, 32, the fact that the abnormality has occurred is displayed on the display unit 20, and drying by the integrated time detecting means (G) at the time of occurrence of the abnormality is performed. The grain dryer is configured to display inspection contents set in advance on the LCD display unit 20 in accordance with the accumulated operation time.

  According to the first aspect of the present invention, the drying operation time is always detected and integrated by an hour meter or the like by installing a dryer and starting the drying operation. If any of these motors or sensors malfunctions when the dryer is turned on, this abnormality is displayed on the display unit, and depending on the hours of drying operation using the hour meter at the time of the malfunction. The inspection contents set in advance are displayed on the display unit. The operator looks at the display content displayed on the display unit, checks the abnormal part, and repairs it.

  Accordingly, the location of a failure that occurs depending on the operation or use time of the dryer is relatively easy to identify, so that the matters to be dealt with can be displayed accurately and accurately, and quick measures can be taken.

  Based on the illustrated example, the grain dryer heats the straw in the storage chamber 1 by applying hot air while letting the grain flow down chamber 3 adjacent to the hot air chamber 2 flow down. The circulation drying mode is such that drying is performed while circulating on the storage chamber 2 through the circulation path of the collecting spiral 9, the elevator 4, and the supply spiral 5.

  The supply spiral 5 and the diffusion plate 6 are provided in the upper part of the storage chamber 2, and the straw that is raised by the elevator 4 is conveyed by the supply spiral 5 and supplied while being diffused into the storage chamber 1 by the diffusion plate 6. In the lower part of the grain lowering chamber 3, a feeding valve 8, a collecting spiral 9, and the like are arranged, and by rotating the feeding valve 8, the straw in the grain lowering chamber 3 flows into the collecting spiral 9 and further conveyed to the elevator 4. It is the structure to do.

  A burner 10 is provided as a combustor on the front side of the hot air chamber 2, and a suction fan 11 is provided on the rear side of the exhaust air chamber 7, and the hot air combusted and heated by the burner 10 by the rotation of the suction fan 11 is the hot air chamber. 2. It is configured to exhaust air from the suction fan 11 to the outside of the machine through the grain flow lowering chamber 3 and the air exhaust chamber 7.

  A supply hopper (not shown) is provided on the side of the elevator 4 to put the soot to be dried, and a discharge hopper 13 for taking out the soot after drying is provided on the top. The discharge hopper 13 is provided with a shutter 14 and can be taken out to the discharge hopper 13 by opening the shutter 14 and supplied to the storage chamber 2 side through the supply spiral 5 by closing. The elevator 4 is provided with a moisture meter 15 that takes out a part of the grain being conveyed and detects dry moisture.

  The elevator 4, the delivery valve 8, the collecting spiral 9, the suction fan 11, the burner 10, and the like are the elevator motor M1, the feeding valve motor M2, the collecting spiral motor M3, the suction fan motor M4, the fuel pump M5, and the like that drive them. And a moisture meter motor M6 and the like, and is driven by an output from the controller 18. An operation panel 19 for operating the dryer is disposed near the upper portion of the burner 10 on the front side of the storage chamber 1.

  This operation panel 19 sets the amount of tension, moisture value, and dry grain type before drying work, apart from the 7-segment LED display unit 21 that displays the hot air temperature, moisture value, and remaining drying time during the drying work. A liquid crystal LCD display unit 20 for displaying a screen to be displayed is provided. The LCD display unit 20 includes a setting switch (touch switch) 22, an insertion amount switch 22 </ b> A for setting the amount of grain insertion, a moisture setting switch 22 </ b> B for setting a drying target grain moisture value, and the like. A drying setting switch 22C for setting the type, method, etc. is arranged, and the LCD display unit 20 is set as a setting screen on the display unit 20 while calling each drying condition item registered in the memory of the controller 18 in advance by the setting switch 22. To display.

  An emergency stop switch 23 and the like are disposed around the LCD display unit 20 as operation switches, and a tension switch 24, a ventilation switch 25, a drying switch 26, a discharge switch 27, a stop switch 28, and the like are arranged along the lower side. Is arranged so that it can be operated manually. Each of these operation switches has a switch name for the purpose of operation. The emergency stop switch 23 is for urgently stopping the drying operation during the drying operation.

  The tension switch 24 is used to supply the soot to the storage chamber 1, and can mainly drive the elevator motor M1 and can drive the other supply spiral 5 and the diffusion plate 6. At the same time, the suction fan 24 can be driven. 11 suction fan motors M4 can also be driven. The drying switch 26 dries by driving each part of the above-described circulation path such as the fuel pump M5 such as the burner 10, the elevator motor M1, the feeding spiral motor M2, the collecting motor M3, and the suction fan motor M4. is there. The ventilation switch 25 drives the suction fan motor M4 of the suction fan 11 and drives each part of the above-described circulation path device. The discharge switch 27 is for taking out the basket in the drying chamber 3 after the drying, drives the feeding valve motor M2, the collecting spiral motor M3, the elevator motor M1, etc., and opens the shutter 14 of the discharge hopper 13. The discharge hopper 13 is discharged outside the machine. The stop switch 28 is used to stop the operation after completion of each operation of stretching, drying, ventilation, and discharging.

  The controller 18 is provided with an hour meter 16 and an operation time integrating means G such as a timer, and a dryer is installed to measure the integrated time for performing the operation of stretching, drying, ventilation, and discharging. On the input side of the controller 18, in addition to the setting switch 22 and the operation switch, an outside air temperature sensor 29, a hot air temperature sensor 31 due to combustion of the burner 10, a grain temperature sensor 32, and the like are arranged and input. Yes.

  The abnormal processing device of the grain dryer is an abnormality of the motors M1 and M4 such as the elevator (elevator) 4 or the fan (suction fan) 11 of the dryer and the sensors 29, 30, 31, and 32 after the power is turned on. Is detected, and the controller 18 as a control unit displays the contents of the inspection according to the elapsed time of the drying operation. By installing the dryer and starting the tension operation, the accumulated time of the subsequent drying, ventilation, and discharge drying operations is input to the hour meter 16. If any of the motors M1 and M4 or the sensors 29, 30, 31, and 32 occurs during the sensor check when the power is turned on, the occurrence of the abnormality is displayed on the display unit 20 and the abnormality is generated. In accordance with the accumulated time of the drying operation by the hour meter 16 at the time point, the inspection contents set in advance are specified and displayed on the display unit 20. The operator looks at the display content displayed on the display unit 20 to check and repair the abnormal part.

  The cause of the phase loss of the motor M1 of the elevator 4 and the motor M4 of the suction fan 11, the abnormality of each sensor 29, 30, 31, 32, or the error can be easily identified by the accumulated time of the hour meter 16 and the operation status. Is. Therefore, when such an error occurs, the controller 18 makes a self-determination based on the time and operation state of the hour meter 16 and displays it on the screen to instruct the responder to quickly deal with the cause.

  As shown in the flowchart of FIG. 2, if the accumulated time of the hour meter is 0 hours, that is, if an abnormality occurs when the power is turned on when the operation has not been performed yet, it is determined that the connector is disconnected (connector disconnected), and the connector is firmly connected. To instruct. If an abnormality occurs when the power is turned on after the accumulated time has elapsed for more than one hour, a check (harness damage check) is instructed based on the judgment that the connector or harness is damaged. If the accumulated time is between 0 and 1 hour and an abnormality occurs when the power is turned on, a three-phase check (three-phase check) of the power supply is instructed.

Thus, since the matter to be dealt with is displayed after the cause of the abnormality in the drying operation is specified, not only those who are familiar with the knowledge of the dryer but also those who have little knowledge of the dryer can easily cope with it.
The operation process of the drying operation includes a setting operation for setting drying conditions, a stretching operation for inserting the grain into the drying chamber 2, a drying operation for drying, and a discharging operation for taking out the grain after drying. Do in this order. These operations are performed by pressing the corresponding operation switch. Among these, the setting operation causes the setting screen to be displayed on the LCD display unit 20, and the setting switch 22 displays the operation switch names such as the overhang amount 22A, the moisture setting 22B, and the drying setting 22C. The drying condition is selected and displayed on the display unit 20 while pressing the switch 22 (see FIG. 6).

  At this time, during the setting operation, switching from the setting screen to the drying screen is not performed. Switching to the in-drying screen is performed by completing the setting operation, performing a stretching operation, and starting the drying operation.

  The tensioning operation is performed by pressing the tensioning switch 42. When the tensioning switch 24 is turned on, the elevator motor M1, the suction fan motor M4, and the like are driven, and the shutter 14 is closed and the elevator 4 is closed. The harvested straw is supplied to a supply hopper (not shown) and is conveyed and accommodated in the storage chamber 1. When this tension is finished, the drying switch 26 is pressed to perform the drying operation. At this time, each part of the circulation path such as the elevator motor M1, the feeding valve motor M2, the collecting motor M3, the suction fan motor M4, the fuel pump M5, and the like are driven to circulate and transfer the soot in the storage chamber 1. Heat to dry.

  Thus, the operation is automatically stopped when the drying operation is completed. In the discharging operation for taking out the dried soot, the delivery valve motor M2, the collecting spiral motor M3, the elevator motor M1 and the like are driven by turning on the discharging switch 27, and the shutter 14 is opened to remove the dry soot from the discharging hopper 14. Can be taken out of the machine.

  In the dryer, a separate retention sensor for detecting a state in which the grain is not conveyed is provided in the grain conveyance system, and the fact that the grain has accumulated is displayed on the display unit 20. For example, “Retention sensor is abnormal. It is specifically displayed as “grains are staying in the grain chamber” or “conveying capacity is low. Check the lower conveyor, elevator bucket, and upper conveyor for wear.” Here, “the grain collection room” indicates the room where the collection spiral 9 is located, “the lower conveyor” indicates the collection spiral 9, “the lifting bucket” indicates the bucket in the elevator 4, and “the upper conveyor” "Indicates the supply spiral 5.

  Further, when an abnormality occurs in the wind pressure sensor due to an insufficient air volume, the cause can be substantially specified by monitoring the current value of the blower fan motor M4. Therefore, when the error occurs, the controller 18 self-determines the cause and causes the display unit 20 to display the cause and the countermeasure so that the operator can quickly cope with the cause. If an abnormality occurs although the current value and current waveform of the suction fan 11 are not different from normal, it is determined that there is a cause on the upstream side of the wind, and “Is the cleaning port etc. open?” , Specify and indicate as follows: “Are there any obstacles in the wind path around the sensor?”, “Is the sensor itself normal?” In the occurrence after the current value and waveform become large, it is determined that there is a cause on the downstream side (the suction fan 11 side has a cause, “Is the duct not twisted?” Or “Is there a place to blow in outside air?” , “Is there any abnormality in Juan 11 itself?”

  Further, in the first drying operation of the season, it is often the case that the drying operation is performed without adjustment, assuming that the dry moisture value at the time of dry finishing coincides with the set moisture value, which is likely to cause trouble. Therefore, the controller 18 is provided with a calendar function, and after the drying determined as the first drying season, the finished moisture is confirmed and used. In order to display the work end time on the controller 18 including the display unit 20, functions such as a clock and a calendar are provided. By making the controller 18 judge from the information and judging that it is the first season of drying from the usage time of the calendar and hour meter 16, "Please check if the finished moisture is as set" is displayed after drying. Then, if necessary, change the moisture correction and moisture meter system settings so that it can be dried for the second and subsequent times. The controller 18 itself judges the situation from various information, thereby preventing trouble. It addresses the unique challenges of the grain dryer field, where the error in finishing moisture varies depending on the season (such as the quality of rice).

The block diagram of drying operation control. The flowchart which shows processing operation at the time of the display part abnormality determination. The front view of an operation panel. A side sectional view of a grain dryer. The rear view. The front view of an operation panel.

Explanation of symbols

4 Elevator 11 Suction Fan 16 Hour Meter 18 Controller 20 Display Unit 29 Outside Air Temperature Sensor 31 Hot Air Temperature Sensor 32 Grain Temperature Sensor M1 Elevator Motor M2 Feed Valve Motor M3 Pick-up Spiral Motor M4 Suction Fan Motor M5 Fuel Pump

Claims (1)

In the grain dryer provided with the operation panel (19) provided with the LCD display unit (20) and the accumulated time detecting means (G) for detecting the accumulated time of operation, any motor (M1, M4) is turned on when the power is turned on. ) Or when an abnormality occurs in the sensor (29, 30, 31, 32), the fact that the abnormality has occurred is displayed on the display unit (20), and the integrated time detection means (G) at the time of occurrence of the abnormality is displayed. A grain dryer that displays preset inspection contents on the LCD display unit (20) according to the accumulated time of the drying operation.

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