JPH0490486A - Drying control system for grain drying machine - Google Patents

Abstract

PURPOSE:To eliminate a need for performing an automatic supplying of dried grains by an operator and simplify his operating method by a method wherein the grain particles are automatically supplied into a cooling chamber and left cooled there through detection of a state of presence or non-presence of crop particles in the cooling chamber, an opening or closing state of a bottom plate in an upper crop collecting trough or a rotating state of an upper crop collecting transporter screw or the like. CONSTITUTION:As grains are dried and detected moisture content of the grains reaches a predetermined finishing target moisture content, sensing of upper crop collecting remained volume sensors 20 and 20 for use in detecting within upper crop collecting troughs 2 and 2 is inputted to a microcomputer 4. This input is detected such that inner sides of the upper crop collecting troughs 2 and 2 are vacant and if a lower motor 56 for a lifting machine for use in rotationally driving upper crop collecting transferring screws 8 and 8 is being stopped, it is inputted to a microcomputer 74. Detection of bottom plate changing-over sensors 21 and 21 for use in detecting an opened or closed state of each of bottom plates 9 and 9 is inputted to the micro-computer 74. If this input is detected as that the bottom plates 9 and 9 are in closed states, the dried grains are automatically supplied to an upper dispersion plate 42 through a crop lifting machine 48, a discharging cylinder 50 and an upper transporting trough 10. The crops are uniformly dispersed and supplied into a cooling chamber 1 under operation of the upper dispersion plate 42 and each of the dried grains is cooled in the cooling chamber 1.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a drying control method for a grain dryer.

Conventional technology Conventionally, when drying grains stored in a storage chamber,
The grains in this storage chamber are repeatedly circulated from this storage chamber to the grain drying room and the lower grain collection gutter, while the hot air generated from the hot air device passes through the drying room and is sucked up by the exhaust fan. As the air is discharged, the grains flowing down the drying chamber are exposed to the hot air and dried.

When supplying the dried grains to the cooling chamber at the top of the storage chamber and leaving them to cool, check to see if there are any grains stored in the cooling chamber. If not, transfer the dried grains to the cooling chamber. Conveying system 1 for transferring and supplying dried grains For example, an upper transfer spiral in an upper transfer gutter is operated to rotate to transfer and supply dried grains into the cooling chamber, and the dried grains are cooled. It was a drying control method in which dried grains were left to cool indoors.

Problem to be Solved by the Invention When drying the grains stored in the storage chamber of the grain dryer, the grains in the storage chamber flow down from the storage chamber to the grain drying chamber and the lower grain collection gutter. While this circulation is repeated, the hot air generated from the hot air device passes through the drying chamber and is sucked and exhausted by the exhaust fan, so that the grains flowing down the drying chamber are exposed to this hot air. dried.

When supplying the dried grains to the cooling chamber at the top of the storage chamber and leaving them to cool, check to see if there are any grains stored in the cooling chamber. If not, transfer the dried grains to the cooling chamber. A conveying system for transferring and supplying dried grains, for example, an upper transfer spiral in an upper transfer gutter, is operated to rotate to transfer and supply dried grains to the cooling chamber. Allow the dried grains to cool.

Means for Solving the Problems This invention sequentially transports grains from an upper cooling chamber 1 to a lower upper grain collecting trough 2, a storage chamber 3, a grain drying room 4, and a lower grain collecting trough 5. The hot air from the hot air device 6 is ventilated into the drying chamber 4 while flowing down, and the air is sucked and exhausted by the exhaust air [7] for drying. In a grain dryer equipped with a bottom plate 9 that can be opened and closed, the bottom plate 9 can be switched between discharging the grains to the outside of the machine and allowing the grains to flow into the storage chamber 3 below by opening the bottom. The upper grain collection transfer spiral 8 of the upper grain collection gutter 2 that transports the grains in the cold room 1 is stopped, and the cooling room 1 is empty and no grains are stored. In some cases, a drying control system is used in which switching control is performed to automatically supply dried grains to the cooling chamber 1.

Effect of the Invention When drying the grains stored in the storage chamber 3 of the grain dryer, the grains in the storage chamber 3 are transferred from the storage chamber 3 to the grain drying chamber 4 and the lower grain collecting trough 5. The hot air generated from the hot air device 6 passes through the drying chamber 4 and is sucked and exhausted by the exhaust fan 7 while the circulation of the air flowing down is repeated. is exposed to this hot air and dried.

When this drying of the grains is completed, the presence or absence of grains stored in the cooling room l is detected and it is detected that it is empty, and the open/closed state of the bottom plate 9 of the upper grain collection gutter 2 is detected and closed. If it is detected that the upper grain collecting transfer spiral 8 of the upper grain collecting trough 2 is in the stopped state and the rotation of the upper grain collecting transfer spiral 8 of the upper grain collecting trough 2 is detected and the stopped state is detected, the automatic switching to grain discharge is performed based on these detections. The dried grains are controlled and supplied from the lower grain collecting trough 5 to the upper cooling room 1, where the dried grains are left to cool.

Effects of the Invention According to the present invention, when the drying of the grains is completed, the dried grains are left in the cooling chamber 1 with or without grains.

By detecting the opening/closing state of the bottom plate 9 of the upper grain collection trough 2, the rotation state of the upper grain collection transfer spiral 8, etc., the grain is automatically supplied into the cooling chamber 1 and left to cool. This operation is no longer necessary, making the operation easier. At the same time, the area below the storage chamber 3 is always emptied once the grains have finished drying, so that the next grain tensioning process is easier. When carrying out the loading operation and the drying operation of the grain, these operations can be carried out immediately.

Example An embodiment of the present invention will be described below based on the drawings.

The zone system shows a circulation type grain dryer 12 that has a cooling section with a cooling chamber 1 at the top, a storage chamber 3 in the middle, and a drying section with a grain drying chamber 4 at the bottom. .

This dry W112 has a rectangular shape that is long in the front and back direction.
3. An upper transfer gutter 10 in which an upper transfer spiral 11 is rotatably installed and a ceiling plate 14 are provided at the upper part.

A cooling chamber 1 for cooling grains is formed below the ceiling plate 14.

At the bottom of this cooling room 1, grain collection #I15 on both the left and right sides
The left and right upper grain collecting troughs 2.2 are provided between the grain collecting troughs 2.2 and the grain collecting troughs 2.2 on both sides of the center.
A diamond-shaped guide plate 16.16 is provided on the upper side of the central part of 2, and below the guide plate 16.16 the upper grain collecting trough 2,
2, an upper grain collection transfer spiral 8.8 is rotatably supported.

Reference numerals 17 and 17 are discharge funnels for the collected grain, which are connected to the discharge conveyor 18.

The bottom plates 9.9 of the upper grain collection troughs 2, 2 are configured to be openable and closable, and when the bottom plates 9, 9 are in the open state, the grains in the upper grain collection troughs 2, 2 are fed out to the lower part. structure, and due to the closed state of the bottom plates 9, 9, the upper grain collecting troughs 2, 2
The grains inside are transferred by the rotation of the upper grain collection transfer spirals 8, 8 and are discharged into the discharge conveyor 18 outside the rear machine wall 13 through the upper grain collection discharge funnels 17 and 17. The bottom plates 9, 9 are opened and closed by bottom plate opening/closing motors 19, 19.

The upper grain collecting troughs 2, 2 are provided with a remaining amount sensor 20.20 for detecting the presence or absence of grains at the lower part thereof,
Also, a bottom plate switching sensor 2 detects the open/closed state of the bottom plates 9, 9.
1 and 21 are provided in the upper grain collecting troughs 2 and 2 on both the left and right sides.

A lower transfer spiral 22 is provided in the space between the upper grain collecting troughs 2, 2.
A lower transfer gutter 23 in which grains are rotatably installed is provided, and the storage chamber 3 for storing grains is formed below the lower transfer gutter 23. A storage chamber remaining amount sensor 24, 24 is provided at the lower part of the storage chamber 3 to detect the presence or absence of grains.

On the lower side of the storage chamber 3, four grain drying chambers 4 are provided between the three exhaust chambers 25 on both left and right sides and the center and the ventilation chambers 2626 on both left and right sides, At the bottom of each of these drying chambers 4 are respective delivery valves 2 for delivering grains and flowing them down.
7 is rotatably supported. Reference numeral 28 denotes a delivery valve motor configured to rotate each delivery valve 27 via a speed reduction mechanism 29.

A lower grain collection gutter 5 in which a lower grain collection transfer spiral 30 is rotatably installed is connected to the lower side of each of the drying chambers 14.

On the front side of the machine wall 13, each of the ventilation chambers 26.26
An air duct chamber 31 is formed which can communicate with the air duct chamber 31.
A hot air device 6 is removably attached to the machine wall 1.
An operating device 32 and a control device 75 for starting and stopping the hot air device 6, the drying ta 12, etc. for each operation of loading, drying, and discharging are removably attached to the outer surface of the hot air device 3. A central control panel 76 for controlling the operating device 32 and the control device 75 is provided in a central control room (not shown) or the like.

Further, an air exhaust duct chamber 33 is formed on the back side of the horizontal wall 13 and can communicate with each of the air exhaust chambers 25 on the left, right, outer, and central portions, and a central rear side air exhaust body 34 of the air exhaust duct chamber 33 has an An exhaust fan 7 is provided, and an exhaust fan motor 35 for rotationally driving the exhaust fan 7 is provided in the exhaust passage chamber 33.

The hot air device 6 has a burner 37 removably installed in a burner case 36, and a fuel pump 38 having a fuel valve is removably installed outside the lower plate of the burner case 36.
It is configured to suck fuel in a fuel tank 39 and supply it to the burner 37, and on the outside of the upper plate there is a blower 40 that feeds combustion air into the burner 37, and a blower motor that rotationally drives the blower 40. 41 is provided.

A central part in the longitudinal direction of the bottom plate of the upper transfer gutter 10 and a central part in the longitudinal direction of the bottom plate of the lower transfer gutter 23 are provided with respective supply channels for supplying transferred grains into the cooling chamber 1 and the storage chamber 3. Upper and lower diffusion plates 42.
42 are provided. Also, in the cooling chamber 1 and the storage chamber 3, there are fullness sensors 43, 4 for detecting the fullness of grains.
3 is provided for each. Reference numeral 44 denotes a lower spiral motor that rotationally drives the lower transfer spiral 22 in the lower transfer gutter 23, the lower diffusion plate 42, etc.

A discharge funnel 45 for conveying the lower crosspiece is provided at the bottom of one end of the lower transfer gutter 23, and an on-off valve 47 that can be opened and closed by an opening/closing motor 46 is provided in the discharge funnel 45 for conveying the lower crosspiece.
When the on-off valve 47 is in the closed state, the grains are transferred and supplied onto the lower diffusion plate 42 by the lower transfer spiral 22 in the lower transfer gutter 23, and are supplied into the storage chamber 3, and when the on-off valve 47 is in the open state, The grains are transferred from the lower transfer gutter 23 to the lower crosspiece transport discharge funnel 45.
It is configured such that the paper is discharged into the discharge conveyor 18 through the above-mentioned.

The grains supplied into the discharge conveyor 18 are transferred by the discharge conveyor 18 and supplied to a discharge grain raiser (not shown), and are transported to a grain storage tank or a huller by this discharge grain raiser (not shown). These grain storage tanks, hulling machines, etc. are configured to be started and stopped by the central control panel 76.

The grain raising machine 48 is provided outside after the machine wall 13, has a belt with a packet conveyor 49 stretched inside, and has a dispensing cylinder 50 at its upper end. The other side of the dispensing tube 50 and the starting end of the lower transfer gutter 23 are connected to each other by a flow tube 51.
A supply gutter 52 is provided between the lower end and the terminal end of the lower grain collection gutter 5 for communication.

An on-off valve 54 that can be opened and closed by an on-off valve motor 53 that rotates forward and backward is provided in the dispensing tube 50, and when the on-off valve 54 is open, grains are transferred from the dispensing tube 50 into the upper transfer gutter 10. When the on-off valve 54 is closed, the grains are supplied from the dispensing tube 50 through the downflow tube 51 into the lower transfer gutter 23. The configuration includes outlet switching sensors 54', 54' for detecting.

55 is a grain raising machine upper motor, which is connected to the packet conveyor 49;
the upper transfer spiral 1 in the upper transfer gutter 10;
1 and the upper spreading plate 42, etc., and the lower grain collection transfer spiral 30 in the lower grain collecting trough 5 is driven to rotate via the belt with the packet conveyor 49.

Reference numeral 56 denotes a grain hoist lower motor, which is configured to rotationally drive the upper grain collection transfer spirals 8, 8 in the upper grain collection gutter 22.

A moisture sensor 57 for detecting grain moisture is provided below the middle of the grain hoist 48 in the vertical direction. This moisture sensor 57 is operated by transmitting an electrical measurement signal from the operation bag ft32, and a moisture motor 58 is rotated to rotate each part of this moisture sensor 57, and the packet conveyor 57 is rotated.
The structure is such that the grains that fall during conveyance to the upper part are received at 9, and the grains at 2 are crushed under pressure, and at the same time, the water content of the crushed grains is detected.

A tensioning conveyor 59 is provided below the discharge conveyor 8,
The setting grains fed into the setting grain hoisting machine (not shown) are supplied from this setting machine to this setting conveyor 59, and the bottom plate of this setting conveyor 59 has Funnel 60
A staking valve 62 that can be opened and closed by a slinging valve motor 61 is provided in this staking funnel 60, and when this staking valve 62 is open, the staking grains are removed from this staking funnel 60. It is supplied to the vicinity of the lower part of the grain raising machine 48 through the loading tube 63, and this grain raising machine 48
64, 64 is a tensioning valve switching sensor, and the tensioning valve switching sensors 64, 64 are configured to detect the open/closed state of the tensioning valve 62.

The operating device 32 has a box shape, and the surface plate of the box body has a start switch 65 for starting and stopping the drying [12], and a stop switch 6 for stopping the drying [12] separately for each operation.
6. An operation display monitor 67 for displaying the operation by each of the starting switches 65, a starting switch 68 for starting the parts related to the cooling chamber 1 for each filling and discharging operation, and a stop switch 69 for stopping each part. An operation display monitor 67 that displays the operation by the switch 68, double drying in which grains are placed in both the cooling chamber 1 and the storage chamber 3, or drying in which grains are placed in only the storage chamber 3. A setting switch 70 for setting single drying, and display monitors 71 and 72 for displaying double drying or single drying are abnormality display monitors, and the bottom plates 9, 9, the on-off valve 54,
When a malfunction occurs in the tensioning valve 62, the grain hoist upper motor 55, the grain hoist lower motor 56, etc., the malfunction display monitor 72 monitors and displays the malfunction location.

Each manual operation switch 72 is provided on the outside of the bottom plate of the operating device 32.
Furthermore, a microcomputer 74 is provided inside the microcomputer 74, and the outputs of various operation switches and outputs of various motors are controlled by this microcomputer 74 according to the inputs of various operation switches and inputs of various sensors to this microcomputer 74. , an operation display monitor, an abnormality display monitor, etc.

The control device 75 has a box shape, and has a digital display section 73 on the surface plate of the box body, a manual moisture measurement switch 77, a moisture setting switch for setting the finishing target moisture content of grains, and a moisture content generated from the burner 37. A grain type setting seed and a grain setting amount setting seed (not shown) for setting the hot air temperature to be used are provided, and a microcomputer 77' is provided inside.

The drying of grains by the microcomputer 74 is carried out as follows. That is, the operation contents of the duty setting type (not shown) are controlled by this microcomputer 7.
4, and this input sets the finishing target moisture content of the grain. On the other hand, the grain moisture detected by the moisture sensor 57 is also input to the microcomputer 74, and the input detected grain moisture is compared with the set finishing target moisture, and it is determined that the detected grain moisture has reached the finishing target moisture. When detected, the configuration is such that the following control is performed in accordance with this detection.

When it is detected that the detected grain moisture has reached the set finishing target moisture, the detection by the upper grain remaining amount sensor 24, 24 that detects the grain in the upper grain collecting trough 2.2 is activated by the micro This input is input to the computer 74, and this input is sent to the upper grain collecting trough 2,
2 is detected to be empty, and the lower motor 56 of the grain hoist, which rotationally drives the upper grain collection transfer spirals 8, 8, is inputted to the microcomputer 74. The detection of the bottom plate switching sensors 21, 21 which detect the open/closed states of the bottom plates 9.9 is inputted to the microcomputer 74, and when this input is detected that the bottom plates 9, 9 are in the closed state, the dried grains are The grains are automatically supplied onto the upper diffusion plate 42 via the grain raising 48, the dispensing tube 50, and the upper transfer gutter 10, and are evenly spread into the cooling chamber 1 by the upper diffusion plate 42. The dried grains are then allowed to cool in the cooling room 1.

Further, when it is detected that the detected grain moisture has reached the finishing target moisture content as described above, the grains are immediately supplied to the cooling chamber 1 to begin cooling, or the following control is performed. This is a configuration in which either one of these is performed. When the detected grain moisture reaches the finishing target moisture, the moisture manual measurement switch 47 of the control device 75 is input, and this input causes the bottom plate 9.
9 is in the open state, the upper grain collection transfer spiral 8
8 is rotationally controlled, and the grains are repeatedly circulated through the cooling chamber 1. The structure is such that the circulation is continued for a predetermined period of time through this cooling chamber 1, and the grain moisture is detected by the moisture sensor 57 during this predetermined period of time, and the average value of the grain moisture is calculated. This calculated grain moisture content is compared with the set finishing target moisture content, and if it is detected that the calculated grain moisture content is less than the set grain moisture content, the bottom plate 9.9 is controlled to be closed, and the upper grain collection The transfer spiral 8.8 is controlled to a stopped state, and the grains are stored in the cooling chamber 1 in the same manner as described above, and the dried grains are left to cool in the cooling chamber 1. It is structured as follows.

Further, when the calculated grain moisture is detected to be equal to or higher than the set grain moisture, the circulation through the cooling chamber 1 is continued.

Hereinafter, the operation of the above embodiment will be explained.

When drying the grains stored in the storage chamber 3 of the grain dryer 12, a start switch 65 is activated to operate each setting of the control device 75 to a predetermined position and start the drying operation of the operating device 32. By operating the dryer 12, each part of the dryer 12, the hot air device 6, and the moisture sensor 58 are started, and hot air is generated from the burner 37 of the hot air device 6, and this hot air flows into the air duct room 31.
From there, it passes through the ventilation chamber 26, the grain drying chamber 4, and the ventilation chamber 2.
5. The grains in the storage chamber 3 are exposed to the hot air while flowing down from the storage chamber 3 into the drying chamber 4 by being suctioned and exhausted by the exhaust fan 7 through the air exhaust duct chamber 33. The grains are dried and fed to the lower part by the feed valve 27 and flowed down to the lower grain collecting trough 5.
From there, the grains are transferred and supplied into the grain hoist 48 through the supply gutter 52 by the lower grain collection transfer spiral 30, conveyed to the upper part by the packet conveyor 49, and then into the lower transfer gutter 23 via the dispensing tube 50 and the falling tube 51. The lower diffusion plate 4 is supplied from the lower transfer gutter 23.
2 is transferred and supplied to the top of the storage chamber 3 by the lower transfer spiral 22, uniformly diffused into the storage chamber 3 by the lower diffusion plate 42, circulated and dried, and the moisture sensor 58 operates the moisture setting setting. When the grain moisture content is the same as the set finishing target moisture content, it is determined that the drying of the grains has been completed.

At the time of this detection, if the inside of the cooling chamber 1 is empty, it is detected by the upper grain collection remaining amount sensors 20, 20, and the upper grain collection gutter 2
, 2 are in the closed state, the bottom plate switching sensor 2
1 and the upper grain collection transfer spiral 8.8 is detected to be in a stopped state, the dried grains are conveyed to the upper part by the packet conveyor 49 and passed through the dump tube 50. It is supplied into the upper transfer gutter 10, transferred from the upper transfer gutter 10 onto the upper diffusion plate 42 by the upper transfer spiral 11, and uniformly diffused and supplied into the cooling chamber 1 by the upper diffusion plate 42, The dried grains are left to cool in this cooling room 1.

Alternatively, when it is detected that the drying of the grains has been completed, the moisture manual measurement switch 77 is controlled to be in the ON state, and at the same time, the bottom plates 9, 9 are controlled to be in the open state, and the upper grain collection transfer switch 77 is controlled to be in the ON state. The spiral 8.8 is controlled by a rotation mechanism, and the dried grains are conveyed to the upper part by the packet conveyor 49, and supplied into the upper transfer gutter 10 through the dispensing pipe 50, The upper transfer spiral 11 from the gutter lO onto the upper diffuser plate 42
The upper grain collection f
f12,2, the circulation of grain being transferred and supplied into the grain raising machine 48 via the storage chamber 3, the drying chamber 4.4 and the lower collecting trough 5 is continued for a predetermined time, and during this predetermined time, the moisture sensor 57 is calculated, and when this calculated grain average moisture value is detected to be below the finishing target moisture value, the bottom plate 9.9 is controlled to be closed, and the upper The grain collection transfer spiral 8.8 is controlled to stop, and the dried grains are stored in the cooling room 1, where they are allowed to cool.

Either one of the above is performed and the dried grains are left to cool.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a block diagram of the operating device, Fig. 2, Fig. 3, and Fig. 4 are flow charts, Fig. 5 is an operation mode diagram, and Fig. 6 is a block diagram of the operating device. is a configuration diagram of the control device, operating device, and central control panel, FIG. 7 is an overall side view of the grain dryer, FIG. 8 is a sectional view taken along line AA in FIG. 7, and FIG.
The figures are a sectional view taken along line B-B in FIG. 7, FIGS. 10 and 11 are enlarged rear views of a part of the grain dryer, and FIG. FIGS. 13 and 14 are enlarged front views of a part of the grain dryer, partially cut away. Explanation of symbols 1 Cooling room 2 3 Storage chamber 4 5 Lower grain collection gutter 6 7 Ventilator 8 9 Bottom plate upper grain collection gutter Grain drying room Hot air device Upper grain collection transfer spiral

Claims (1)

[Claims] The hot air from the hot air device 6 is passed through the hot air device 6 while the grains are sequentially flowing down from the upper cooling chamber 1 to the lower upper grain collection gutter 2, storage chamber 3, grain drying room 4, and lower grain collection gutter 5. It is provided to ventilate the drying chamber 4 and suck and exhaust the air with an exhaust fan 7 for drying, and the upper grain collection transfer spiral 8 installed in the upper grain collecting trough 2 discharges the grains to the outside of the machine and opens the bottom part. In a grain dryer equipped with a bottom plate 9 that can be opened and closed, the upper part is used to transfer the grains in the cooling room 1 when the grains have finished drying. When the upper grain collection transfer spiral 8 etc. of the grain collecting trough 2 is stopped and the cooling chamber 1 is empty with no grains stored, dried grains are transferred to the cooling chamber 1. A drying control method characterized by switching control for automatic supply.