JPH04353386A - Grain supply switching device in two-layer dryer - Google Patents

Abstract

PURPOSE:To contrive the shortening of a set time by a method wherein the title switching device is provided with a changeover valve, capable of supplying while switching to a different tank, and an interlocking means for switching and returning the position of the switching value to a preset reference position upon the switching operation after finishing a predetermined treating operation. CONSTITUTION:A grain drying machine B is constituted of a grain drying unit 4, provided with a reserving tank 1, a venting and drying unit 2 and a grain collecting unit 3, a natural cooling tank 5 and an elevator 15. The elevator 15 is provided with a configuration capable of throwing scooped grains toward a throwing port 16 at the upper part of the elevator 15 and the throwing port 16 is provided with a switching valve 17. The switching valve 17 is constituted so as to be switched selectively to a first opening (A), which guides the grains to the reserving tank 1, or a second opening (B), which guides the grains to the natural cooling tank 5. The switching valve 17 is constituted so as to be returned to a preset reference position upon the switching operation after finishing predetermined treating operation and, therefore, only the deciding of the position of the switching valve is enough to select a different operation mode whereby the operation can be shifted to said operation quickly.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain supply switching device in a two-layer dryer.

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 the grain drying section and the cooling tank are provided above and below, as described above, it is necessary to switch between supplying the grain to the cooling tank at the throwing port of the elevator or to the storage tank in the drying section. A switching valve is required to allow the grain to flow down from the cooling tank to the storage tank below. Among these, the predetermined position of the switching valve is determined by the so-called single operation mode or double operation mode, but for example, during drying, in a specific processing operation mode, the switching valve may be set in the opposite direction, and after this operation is completed, However, if this setting state is maintained, subsequent work will be hindered.

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 grain in a cooling tank 5 to flow down to a storage tank 1 by an opening means, during a predetermined processing operation, the switching valve 17 is switched in a direction different from the position of the switching valve 17 during the operation. In this case, the grain supply switching device in the two-layer drying device is configured to include return interlocking means for returning the switching valve 17 position to a preset standard position after the completion of this predetermined processing operation.

[0005]

Effects of the Invention As described above, the configuration is such that supply can be supplied to different tanks by switching the switching valve 17, but when the operation is performed by moving from a preset position to a different side, the above-mentioned standard setting position is set after the end of the operation. When selecting a different operation mode, it is sufficient to only judge the switching valve position, and the actual operation can be omitted and the operation can be quickly shifted to the corresponding operation mode.

[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. In addition, various operation forms can be selected according to the grain loading state of the upper and lower tanks and the operation mode set by the single/double setting switch 51, and the switching valve is adjusted according to each operation state. 17 and bottom valve 30
etc. are structured so that they can be linked to predetermined positions (Figure 10)
.

The operation 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 transported to elevator 3.
It is lifted up at 8 and supplied to the starting end side of the tensioning conveyor 36. Selective control from a central control panel (not shown) specifies which grain drying device B is to be loaded with grain, and when an ON signal is obtained from a loading switch 41 (described later), a predetermined loading opening/closing shutter 6 is selected.
8 is opened, and the grain transferred by the loading conveyor 36 is loaded and supplied 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 left to cool for a predetermined period of time, they are transferred to the next hulling device D, where they are husked and the paddy is sorted out. becomes. That is, in response to 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 five cooling parts 25 function together with the lower storage tank 1 as a refining part.

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.

[0025] Before carrying out each of the above operations, the condition of each part is checked, and if it is determined that there is no problem with operation,
This is a configuration for transitioning to lining, drying, etc. (Figure 8). By the way, as mentioned above, the switching valve 17, the bottom valve 30, etc. are set to predetermined positions depending on the selection of the single operation mode or the double operation mode and the combination of each operation mode such as filling and discharging. It may be possible to execute a different operation mode during a predetermined operation. In rare cases, the setting state of the switching valve 17 may be changed. For example, ■ ■ operation of charging raw paddy into the cooling tank 5 when selecting the single operation mode, ■
Movement from the drying section 4 to the cooling tank 5 in the same mode,
■For the discharge operation in the double operation mode, it is necessary to switch the switching valve 17 from the previous setting state.In such a case, by automatically returning to the standard state, the operation of the next stroke can be changed. Control is facilitated without the switching operation of the switching valve 17.

That is, when it is determined whether each operation switch is ON (step 10), a drive signal is output to the switching valve motor 66 (step 20), and it is determined whether the switching valve 17 is in a predetermined position. (Step 30). When it is in the predetermined position, the operating output to the switching valve motor 66 is cut off (step 40). The process of moving other shutters to the setting side is performed in the same way, and when everything is set, the operation of the drive motor required for the relevant operation mode is started (step 50).
. When the operation in the relevant operation mode is completed (step 6
0), the drive motor according to step 50 is outputted to stop (step 70). The switching process of each shutter including the post-switching valve 17 to the reference side is performed (step 8
0). The switching valve 17 is also driven back in the same way (step 9
0). Note that the reference side here refers to the standard state in each of the single operation mode and double drying mode. Next, it is determined whether or not these switching valves 17 and the like are in predetermined positions (step 100), and the switching valve 17 drive motor 6
6 is stopped (step 110). Incidentally, if the switching valve 17 is not at the predetermined position in step 30, the motor 66 continues to be driven for a certain period of time and then is stopped (steps 120 and 130). Furthermore, even when the motor 66 is not at the predetermined position in step 90, the motor 66 continues to be driven for a certain period of time and then is stopped (steps 140 and 150). If it is determined that the predetermined position has not been reached even after a certain period of time has elapsed, an abnormality is displayed (step 160).

The grain transferred by the discharge conveyor 34 is supplied into the storage hopper C by the elevator 39, and after waiting for the completion of the subsequent hulling process, it is supplied from the hopper C to the hulling device D, and the grain after hulling is The brown rice is packed into bags in predetermined amounts by a weighing device E, or is stored in a finishing tank (not shown) and then weighed in a weighing hopper G.

[Brief explanation of drawings]

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 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 (6)

[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 equipment, when the switching operation is performed in a direction different from the position of the switching valve 17 during a predetermined processing operation, the switching valve 17 position is returned to the preset standard position after the completion of the predetermined processing operation. A grain supply switching device in a two-layer drying device, which is provided with return interlocking means. 2. The grain supply switching device in a two-layer drying apparatus according to claim 1, wherein the cooling tank 5 is provided in the cooling tank. 3. The grain supply switching device in a two-layer drying apparatus according to claim 1, wherein the cooling tank 5 is provided in a tank for storing raw grains. 4. The grain supply switching device in a two-layer drying apparatus according to claim 1, wherein the predetermined processing operation is a grain discharge operation after drying in a double operation mode. 5. The grain supply switching device in a two-layer drying apparatus according to claim 1, wherein the predetermined processing operation is an operation for charging grain into the cooling tank 5 during drying in the single operation mode. 6. The grain supply switching device in a two-layer drying apparatus according to claim 1, wherein the predetermined processing operation is an operation for transferring the grain to the cooling tank 5 after single drying.