JPH04369384A - Malfunction preventing method for two-layer drying device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of operating a two-layer drying apparatus during abnormal conditions.

0002

2. Description of the Related Art Grains that have been dried are transferred to a cooling tank to cool down the temperature of the grains, or the cooling tank is provided for storing raw grains. By the way, if the grain drying section and the cooling tank are placed one above the other, you can perform a single operation in which grain is dried in the normal storage section, and a double operation in which the grain in the cooling tank is dried while flowing downward. It is convenient to be able to select the mode.

0003

[Problems to be Solved by the Invention] By the way, when operating the grain drying section and the cooling tank installed above and below as described above, it is not convenient for the grain to stop operation of the other side when an abnormality occurs on one side. may be bad.

0004

[Means for Solving the Problems] The present invention aims to solve the above-mentioned drawbacks, and includes a storage tank 1 and an aeration drying section 2 for applying drying air to the grains flowing down from the storage tank 2.
A cooling tank 5 is placed in the grain drying section 4 which includes a circulation mechanism section, etc., and the lifted grain from the elevator 15 of the circulation mechanism section is stored in either the storage tank 1 or the cooling tank 5 of the grain drying section 4. It has a switching valve 17 that switches to guide the grain to one side, and a discharge transfer gutter 26, 26 is provided at the lower part of the side of the cooling tank 5 to discharge the grain stored in the tank outside the machine, and a bottom valve 30 of this is provided. In a two-layer grain drying device configured to allow the grain in the cooling tank 5 to flow down to the storage tank 1 by an opening means, the single/double setting switch 51 is used to load grain only into the grain drying section 4 or to dry the grain. An abnormality detecting means is switchably provided to load grain into the cooling tank 5 and the grain drying section 4, and detect abnormalities in each part of the operation. Abnormal location determining means for determining whether the abnormality is related to side 4 or side of cooling tank 5, and based on this determination result and the operating state, whether to continue independent operation of grain dryer 4 side or side of cooling tank 5. A method for operating a two-layer drying apparatus during an abnormality is provided with a continuous operation determining means for determining whether or not to proceed.

[0005]

Effects of the Invention In a structure in which the grain drying section 4 and the cooling tank 5 are configured in two layers, upper and lower, when the operation contents of both are different, if an abnormality occurs in one of them, the content of the abnormality is determined and the other is determined. Since it is possible to continue operation of the grain that does not necessarily need to be stopped by determining whether or not it is possible to continue operation of the grain, it is possible to prevent grain loss, such as steaming, by stopping the operation.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained based on the drawings. The figure shows a grain drying and preparation device, with a grain receiving pit A in the building, a plurality of grain drying devices B, B... on one side of the pit A, and a storage hopper C and paddy on the other side. In addition to installing a sliding device D, a weighing device E, etc., elevators and the like for transferring and supplying grain between each device are provided.

[0007] Of these, the grain drying apparatuses B, B, . . . all have the following configuration. That is, the storage tank 1 and the ventilation drying section 2
It consists of a grain drying section 4 in which a grain drying section 4 and a grain collecting section 3 are stacked vertically, and a cooling tank 5 placed on the top of the frame of the four grain drying sections, and these are arranged in a vertically long rectangular parallelepiped shape. configured. Among these, the ventilation drying section 2 of the grain drying section 4 has hot air chambers 7, 7 and exhaust chambers 8, 8 on the left and right, with four grain flow down passages 6, 6 formed by air permeable side walls in between. form...
The air sucked and ventilated by the suction fan 9 is hot-aired by the burner 10, and the hot air is applied to the grains flowing down the grain-flowing passages 6, 6, . . . . Reference numerals 11, 11, . . . are delivery valves disposed at the lower portions of the grain flow passages 6, 6, . . . for gradually causing the grain to flow down.

A horizontal transfer gutter 13 equipped with a transfer spiral 12 is provided at the lower part of the grain collecting section 3 that receives the grains fed out from each of the above-mentioned feed valves 11, 11, and collects them in the center side, and an elevator 15 is provided from the terminal end side in the transfer direction. is connected to. This elevator 15 is located on the back side of each machine frame of the grain drying section 4 and the cooling tank 5, and is erected at a slightly higher height than the cooling tank 5. Inside the elevator 15, an endless belt with buckets attached at predetermined intervals is wound between upper and lower pulleys, and the grains etc. from the horizontal transfer gutter 13 can be scooped up and thrown toward the dumping port 16 at the upper part. It is in the form of

[0009] Also, a switching valve 17 is provided at the outlet 16.
It has a configuration in which it can be selectively supplied to the first opening (a) and the second opening (b) according to the switching operation. The discharge side end of the first opening A is exposed to a communication pipe 18 which is located before and after the ceiling of the storage tank 1 and connects to the starting end of a circulation transfer gutter 20 having a built-in transfer spiral 19. On the other hand, the second opening (b) looks into the starting end side of the cooling transfer gutter 22, which incorporates the transfer spiral 21 and is arranged in the same manner on the ceiling on the side of the cooling tank 5.

The above-mentioned transfer spiral 19 gutter 20 and transfer spiral 2
1 gutter 22 is extended to the upper central position of each tank section, and can supply water to the rotating diffusion plate 23 or 24. The cooling tank 5 includes a cooling part 25 having approximately the same capacity as the storage tank 1 of the grain drying part 4, and a cooling part 25 located at the lower part of the cooling part 25, which is formed into two V-shaped tanks in cross section, and has a discharge transfer gutter 26, 26 at the bottom thereof. The feeding portion 27 formed in
It consists of The feeding section 27 is equipped with transfer spirals 28, 28 for discharging the collected grains that are successively flowing down to be horizontally transferred.

A bottom valve 30, 3 is provided at the bottom of each discharge transfer gutter 26.
0 is provided, and the bottom portion of the bottom valve can be opened by appropriately rotating the bottom valve around a fulcrum. This bottom valve 3
With the switching operation of 0, the grain from the feeding section 27 can flow down into the storage tank 1 on the side of the grain drying section 4 through the open ceiling section C of the grain drying section 4. Further, the transfer terminal end sides of these discharge transfer spirals 28, 28 are made to protrude outside the machine frame,
The protruding portion is connected to the transfer gutter 31, 31 attached to the outer surface of the machine frame.
It is configured to be supplied to a discharge conveyor 34 in the form of a belt conveyor through downstream guide cylinders 33, 33 from each discharge port (not shown) on the end side.

The supply starting end side of the circulation transfer gutter 20 is located outside the machine frame, and a hopper 32 is provided so as to be able to see into the lower part of the communication pipe 18, and the transfer gutter is located directly below the connecting portion of the hopper 32. A discharge port is formed on the lower side of the discharge port 20 and is configured to be opened and closed by an on-off valve (not shown), and a guide cylinder portion 35 is connected thereto. The circulation transfer gutter 20 is located between the left and right discharge transfer gutter 26, and each guide cylinder portion 33,
33 and 35 are installed side by side on the left and right, and the discharge conveyor 3
4 along the transport direction.

The cooling tank 5 is equipped with a ventilation mechanism (not shown), and can be operated for ventilation by introducing outside air by operating the operation switch described later. The discharge conveyor 34 is provided to connect left and right grain drying apparatuses B, B..., that is, integrally constituted machine frames of a plurality of grain drying sections 4 and cooling tanks 5, to the left and right, and connects each machine frame to the left and right. It is located in the space between the rear side of the unit and the elevator 15, and the machine frame and the elevator 1 are provided as appropriate.
5 It is supported and attached to the frame part.

Reference numeral 36 denotes a tension conveyor provided below and parallel to the discharge conveyor 34, and is in the form of a flight conveyor. A discharge port (not shown) is provided in the middle of the loading conveyor 36, and an on-off valve (not shown) is provided at these ports.
A plurality of grain drying sections 4, 4...individual elevators 1 are arranged.
5 are connected to guide tubes 37, 37....

The elevator 38 from the pit A is provided so as to be able to supply grain to the loading conveyor 36, and the dried grains from the discharge conveyor 34 are supplied to the storage hopper C via the elevator 39. The rice hulling device D is of a known form,
It consists of a husking department, a paddy and brown rice sorting department, etc. A weighing device E is disposed on the brown rice outlet side of the paddy/brown rice sorting section, so that the rice is packed into bags according to a predetermined weight.

FIG. 6 shows a control block diagram of a microcomputer installed in each of the drying devices B, B, etc. The arithmetic control section 40 of the controller for executing drying control includes a drying section 4 side operation switch, that is, a drying section 4 side operation switch. Pitching, drying, discharging,
Each operation switch 41 for moving and stopping (to the cooling tank 5)
~45, and the operation switch on the cooling tank 5 side, that is, the
Operation switches 46 to 50 for ventilation, discharge, movement (to storage tank 1), and stop, 51 input for single/double setting switch, analog input for detection of moisture meter, hot air temperature, etc.
Upper and lower full sensor 52, 53 input, open/close detection sensor 54, 55 input of switching valve 17, open/close detection sensor 56, 57 input of left and right bottom valve 30, open/close detection sensor 58, 59 of tensioning shutter sensor, cooling tank 5 side Remaining amount sensors 60, 60, drying section 4 side remaining amount sensors 61, 61, grain flow detection sensor 6
2. Accepts overload detector inputs from motors 63, 64, 65, and other setting switches and sensor inputs, while output information includes combustion system output, circulation system drive and ventilation drive motor output, switching valve 17 and bottom valve 30. Drive motor 66, 67 output, loading/discharging shutter 68, 69 drive motor 70,
71 output, operation display monitor output, abnormality display monitor output,
etc. The controller has an operation information input section 72 from the central control panel 12, and a drying section information output section 73, and periodically exchanges information with the central control panel (not shown) as described above. The central control panel can also control the operation all at once.

The detection result of the state determination sensor of the driven part is used to prompt the operation of each control motor, for example, the switching valve drive motor 66, or to display an abnormality display. The calculation control unit 40 performs the drying control described above and also has the following functions. In other words, check whether the operating parts of each of the above parts are in the predetermined position required for the operation, whether the burner system is operating normally, and whether the drive motor of each part is within the appropriate load range. The abnormality detection function (abnormality determination means) that determines the abnormality, etc., and the abnormality location determination function (abnormality location determination means) that simultaneously determines which part is abnormal are provided.

[0018] Further, in the above-mentioned abnormality, the continuous operation determining means is provided for determining whether or not the upper cooling tank 5 and the lower grain drying section 4 can be operated independently in the single operation. . The effect of the above example will be explained. Grain harvested in a field, such as paddy, is transported by truck or the like and put into pit A. The grain received in this pit A is lifted up by an elevator 38 and supplied to the starting end side of a pitching conveyor 36. Selective control from a central control panel (not shown) specifies which grain drying device B is to be loaded with grain, and upon receiving an ON signal from the loading switch 41, which will be described later, a predetermined loading opening/closing shutter 68 is opened. The grains transferred by the loading conveyor 36 are loaded into the designated drying device B.

Regarding the designated grain drying apparatus B side, a storage tank 1 filling signal is output by turning on the filling switch 41 in advance. Therefore, the elevator 15 of the selected dryer B receives the loaded grains by the above-mentioned bulk supply, and at this time, the switching valve 17 of the dumping port 16 is switched to enable supply to the first opening A side, and the connecting pipe 18 , hopper 5
2. After passing through the circulation transfer gutter 20, the grain is poured into the storage tank 1 of the grain drying section 4. Next, the amount of water to be filled and the like are input to the control section 40 by visual judgment and switch input, and when the drying switch 42 is operated, drying is started. The temperature of hot air from the burner is determined based on an input signal from an outside air condition detection sensor such as outside air temperature, and drying is performed based on the set temperature. That is, each part of the grain drying section 4 is activated, and the grains gradually flowing down the grain flow passages 6, 6, etc. are dried by being exposed to hot air, collected in the grain collection section 3, and transferred to the horizontal transfer gutter 13 and the elevator 1.
5. The material is circulated and transferred into the storage tank 1 through the first opening A, the transfer gutter 20, and the rotating diffusion plate 23, and is tempered in the storage tank 1.

While repeating such a drying process, a preset finishing moisture value is reached and the drying is completed. When discharging from the storage tank 1, it is preferable to turn on the moving switch 43, which causes the drying section to dry. In response to the discharge and cooling tank 5 filling command signals, the switching valve 17 switches to the second
Switching allows grain to be fed to the opening RO side. Therefore, the grains lifted by the elevator 15 are transferred to the second opening RO and the transfer trough 2.
2. It is transferred to the cooling section 25 in the cooling tank 5 via the rotating diffusion plate 24. Here, the grain is allowed to cool by being left for a predetermined period of time, thereby reducing the temperature of the grain.

When the discharge switch 48 is turned on after the grains in the tank 5 have been allowed to cool for a predetermined period of time, they are transferred to the next hulling device D, where the grains are husked and the paddy and brown rice are sorted. becomes. That is, upon receiving the tank discharge command signal from the discharge switch, the transfer spirals 28, 28 of the discharge transfer troughs 26, 26 are activated, and the grains in the cooling section 25 are transferred to the discharge transfer troughs 26, 2.
6 and is discharged to a discharge conveyor 36 outside the machine.

If the amount of grain received is estimated to be larger than the volume of one storage tank, select the "double drying mode" with the separately provided single/double setting switch 51, and perform the drying process as follows. I do. That is, when the filling start signal causes the storage tank 1 to be filled in the same manner as described above, and the full sensor 53 of the storage tank 1 is turned on,
The driving of the tensioning conveyor 36 is cut off, and the tensioning process is temporarily stopped. Next, automatically or by turning on the tensioning switch 46 of the control section, the switching valve 17 is switched to the second opening side, and the bottom valves 30, 30 of the discharge transfer troughs 26, 26 are opened, and the received grain is It is inserted into the cooling part 25 on the cooling tank 5 side.

[0023] When all the grains to be dried are completed in this way, the drying switch 42 is turned on. The grains in the storage tank 1 are transferred to the lower delivery valves 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 00 0 0 0 000 grains in the storage tank 1 will be transferred to the lower delivery valves 11, 11, 11...
While the tank 5 is gradually drawn out as it rotates and dried by being exposed to hot air in the ventilation drying section 2, the bottom valves 30, 30 of the discharge transfer troughs 26, 26 on the side of the cooling tank 5 are maintained in an open state. The grain inside is discharged through the transfer troughs 26, 26.
The liquid flows directly downward from the storage tank 1 and is dried in the same manner. The dried grains collected in the grain collecting section 3 are supplied through the elevator 15 to the second opening RO side from the dumping port 16, reach the cooling tank 5 side, and are evenly distributed by the rotating diffusion plate 24, and are then dropped into the tank. The cooling section 25 of 5 parts functions as a refining section together with the lower storage tank 1.

In the above case, after drying is completed, by turning on the discharge switch 48, the guide tube 33 of the circulation transfer gutter 20 is removed.
, 33. In addition, if there is a large amount of grain as described above, the grains in the cooling tank 5 are also filled and the grains in this tank and the storage tank 1 are processed at the same time.In addition, the cooling tank 5 is used for temporary storage of paddy. It is also possible to wait until the drying in the tank 1 is completed, wait for the completion of drying and discharge of the storage tank 1, and then transfer the storage tank 1 to the storage tank 1 for drying in the standard single operation mode.

In setting the single/double drying mode, the switch 51 is activated only when certain conditions are met. That is, when the single/double setting switch 51 is read (step 10), it is determined whether each part is stopped (step 20).
), and when it is stopped, the presence or absence of grain in the cooling tank 5 is detected (determination of the detection output from the remaining amount sensor, step 3).
0, 40), and there is no grain, the process moves to switch 51 content determination (step 50). When the single setting is selected (step 60), a closing output is made to the bottom valve 30 (step 70).

On the other hand, if it is determined in step 40 that there is grain, a switch 51 input restriction process is performed (step 80). Further, if it is determined in step 60 that the double setting is made, an opening force is applied to the bottom valve 30 (step 90) (
Figure 8). Now, suppose that an abnormality occurs, for example, due to a misfire in the burner 10 of the grain drying section 4, while the drying operation is continuing with the single setting among the combinations shown in FIG. The calculation control unit 40 is
The occurrence of an abnormality is confirmed (step 100), and this information is transmitted from the sensor type (for example, a misfire detection sensor (not shown)).
It is determined that the burner has misfired (step 110). Next, it is determined whether or not there is an abnormality on the side of the grain drying section 4 (step 120).
If so, a message is displayed to the effect that there is an abnormality on the side of the grain drying section 4 (step 130), and each operating section related to the drying section 4 is stopped (step 140). On the other hand, while the above-mentioned stop processing is being executed, it is determined whether or not to continue the operation of the mode in which the cooling tank 5 side is operating; for example, the cooling tank 5 side is in "ventilation operation". Then, since the said operation is possible,
"Continue ventilation operation" is displayed (step 150), and the continued operation is processed (step 160). Also, step 12
When the answer is NO at 0, that is, when there is an abnormality on the cooling tank 5 side, it is similarly determined whether or not the operation on the ventilation drying section 4 side can be continued, and operation continuation processing is performed (step 170
~200) (Figure 9).

[0027] In the above, in the event of an abnormality that makes it impossible to continue operation, such as an overload abnormality in the elevator 15, everything is stopped and a subsequent artificial solution is awaited. FIGS. 11-11 show examples of operation modes in which the above-mentioned continuous operation is possible. FIG. 10 shows a configuration in which the conveyance state is detected by a grain remaining amount sensor 61 when performing a conveyance operation to transfer grain from the grain drying section 4 to the cooling tank 5, and the operation output can be automatically stopped when the conveyance is completed. , which eliminates the burden on the operator of stopping operations.

[Brief explanation of the drawing]

FIG. 1 is a front view of the entire system.

FIG. 2 is a front sectional view of the entire grain drying device.

FIG. 3 is a side view of the entire grain drying device.

FIG. 4 is a rear view of the entire grain drying device.

FIG. 5 is an exploded perspective view of a portion of the grain drying device.

FIG. 6 is a control block diagram.

FIG. 7 is a front view of the controller.

FIG. 8 is a flowchart diagram.

FIG. 9 is a flowchart diagram.

FIG. 10 is a flowchart diagram.

FIG. 11 is a list of setting modes.

[Explanation of symbols]

A Receiving pit B, B Grain drying device C Storage hopper D Hulling device E Weighing device
1 Storage tank 2 Ventilation drying section 3 Grain collecting section
4 Grain drying section 5 Cooling tank 6, 6 Grain flow passage 7, 7 Hot air chamber 8, 8 Exhaust chamber 9 Suction fan
10 Burner 13 Horizontal transfer gutter 15 Lifting machine
17 Switching valve A First opening B Second opening
20 Circulation transfer gutter 22 Cooling transfer gutter 25 Cooling part
26, 26 Discharge transfer gutter 30 Bottom valve 31, 31
Transfer gutter 33, 33 Downstream guide tube 34 Discharge conveyor 35 Guide tube 36 Pitching conveyor 66 Switching valve motor

Claims (1)

[Claims] Claim 1: A cooling tank 5 is mounted on a grain drying section 4 consisting of a storage tank 1, an aeration drying section 2 for applying drying air to the grains flowing down from the storage tank 2, a circulation mechanism section, etc. It has a switching valve 17 that switches to guide the lifted grain from the elevator 15 of the circulation mechanism section to either the storage tank 1 or the cooling tank 5 of the grain drying section 4, and a lower part on the side of the cooling tank 5. is equipped with discharge transfer troughs 26, 26 for discharging the grain stored in the tank to the outside of the machine, and the grain in the cooling tank 5 is configured to be able to flow down to the storage tank 1 by means of opening the bottom valve 30 of this two-layer type. In the grain drying device, the grain drying section 4 is controlled by the single/double setting switch 51.
Abnormality detection means that can be set to switch to load grain into the grain drying section 4 and the cooling tank 5 for drying, etc., and detect abnormalities in each part of the operation;
Abnormal location determining means for determining whether the operational abnormality detected by the abnormality detecting means is related to the grain drying section 4 side or the cooling tank 5 side, and the grain dryer 4 side based on this determination result and the operating state Alternatively, there is a method for operating a two-layer drying apparatus during an abnormality, which includes a continuous operation determining means for determining whether or not independent operation of the cooling tank 5 should be continued.