JPH05288466A - Cereals dryer - Google Patents

Abstract

PURPOSE:To reduce in size a cereals dryer by incorporating both a hot air device for generating hot air and a dehumidifier for generating dehumidified air in a dryer wall. CONSTITUTION:Cereals in cereals drying chambers 9, 9 are delivered by delivery valves 12, 12, fallen on falling shelves 14, and supplied to a cereals collecting trough 13. A hot air device 3 is provided at one side of a lower side of the shelf 14, and a dehumidifier 4 is provided at the other side. The device 3 and the dehumidifier 4 are incorporated in a dryer wall, thereby reducing in size a cereals dryer 1. The cereals are dried by mixed dry air obtained by mixing the hot air generated from the device 3 and dehumidified air generated from the dehumidifier 4, thereby improving drying efficiency.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a grain dryer.

[0002]

2. Description of the Related Art Conventionally, by rotating a feeding valve from an upper grain storage chamber to a lower grain drying chamber, a grain is fed out from a downflow shelf to a grain collecting trough, and outside the machine wall on the front side. Either the hot air generated from the hot air device provided on the surface or the dehumidified air generated from the dehumidifying device was a dryer of a type that passes through the drying chamber and dries the grains.

[0003]

When a hot air device or a dehumidifying device is selected and the grain dryer is started to start the drying operation, the grains stored in the grain storage chamber of the dryer are , The hot air generated from the selected hot air device or generated from the selected dehumidifying device while being fed from the storage chamber to the grain drying chamber by the rotation drive of the feeding valve and flowing down from the falling shelf into the grain collecting trough Any of the dehumidified air that passes through the drying chamber, the grains flowing down in the drying chamber are exposed to the hot air or the dehumidifying air to be dried, and the moisture of the drying grains is When the finish target moisture is reached, it is determined that the drying is completed, the dryer is stopped, and the drying of the grain is stopped.

During this drying operation, when the outside air humidity is in a high humidity state or the drying efficiency is improved, both the hot air device and the dehumidifying device are started at the same time to generate hot air and dehumidifying air. An attempt is made to reduce the size and improve the external shape of the dryer by using a configuration in which the hot air device and the dehumidifying device are mounted in the machine wall while drying the grains with the mixed dry air mixed.

[0005]

According to the present invention, grains are fed from an upper grain storage chamber 8 to a lower grain drying chamber 9 by rotationally driving a feeding valve 12 so that the grains are fed from an inverted C-shaped downflow shelf 14. A mixed dry air in which hot air generated from a hot air device 3 provided on one side of the downflow shelf 14 while flowing down to the grain collecting trough 13 and dehumidified air generated from a dehumidifying device 4 provided on the other side are mixed and dried. , A hot air from the hot air device 3 or the dehumidified air from the dehumidifying device 4 is blown into the drying chamber 9 to dry the grain. ..

[0006]

When both the hot air device 3 and the dehumidifying device 4 are selected, or either one of the hot air device 3 and the dehumidifying device 4 is selected and the grain dryer is started to start the drying operation, The grain accommodated in the grain storage chamber 8 of the dryer is fed out from the storage chamber 8 into the grain drying chamber 9 by a valve 12
By the rotation drive of the grain collecting gutter 1 from the falling shelf 14
A mixed dry air in which hot air generated from the selected hot air device 3 and dehumidifying air generated from the dehumidifying device 4 are mixed while flowing down to 3, hot air generated from the selected hot air device 3,
Or, any of the dehumidified air generated from the selected dehumidifying device 4 passes through the drying chamber 9, so that the grains flowing down in the drying chamber 9 are mixed dry air, hot air, Alternatively, it is exposed to dehumidified air and dried, and when the moisture content of the grain during drying reaches the finishing target moisture content, it is determined that the drying is completed, the dryer is stopped, and the drying of the grain is stopped.

[0007]

According to the present invention, the grain is dried by the mixed drying air in which the hot air generated by the hot air device 3 and the dehumidifying air generated by the dehumidifying device 4 are mixed, so that the outside air humidity is high. Even if there is, efficient drying is possible, and by adopting a configuration in which both the hot air device 3 and the dehumidifying device 4 are housed and installed in the machine wall, the grain dryer can be made compact and the external shape can be greatly improved. At the same time, the installation area of this dryer can be reduced,
The adaptability to the workplace was also improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The illustrated example is a circulation type grain dryer 1 for drying grains.
It shows a state in which a moisture sensor 2 for detecting moisture in the grain, a hot air device 3 for generating hot air, a dehumidifying device 4 for generating dehumidified air, etc. are mounted.

The dryer 1 has a rectangular shape that is long in the front-rear direction and has a transfer gutter 6 and a ceiling plate 7 in which a transfer spiral is rotatably mounted on the upper part of the machine wall 5. Below the ceiling plate 7, grains are provided. A grain storage chamber 8 for storing grains is formed. Grain drying room 9,
Reference numeral 9 indicates a lower side of the storage chamber 8 on both left and right sides of the exhaust chamber 1.
0, 10 and a blower chamber 11 at the center, and below these drying chambers 9, 9, a delivery valve 12 for delivering and flowing down the grains is rotatably supported.

The grain collecting trough 13 has an upside-down inverted shelves 1 at the top.
4 is provided, a transfer spiral is rotatably supported in the central portion, and is provided below the drying chambers 9 and 9 for communication. The hot air device 3 includes a burner 15 and the like.
5 is provided on one side of the lower side of the falling shelf 14, and the dehumidifying device 4 is provided on the other side. The hot air generated from the burner 15 of these hot air devices 3 and the dehumidifying air generated from the dehumidifying device 4 are the front side. The mixed dry air is mixed in the hot air passage chamber 16 formed in the front portion of the machine wall 5 and passes from the hot air passage chamber 16 through the air blowing chamber 11 to the drying chambers 9, 9. In addition, either one of the hot air device 3 and the dehumidifying device 4 may be started. The burner 15 of the hot air device 3 may be a heater. An operation device 17 for starting and stopping the moisture sensor 2 and the dryer 1 for each of the operations of loading, drying and discharging is detachably provided on the machine wall 5 on the front side.

The wind blower 18 is provided on the air blower chamber 20 on the rear side, and is provided on a central rear wind blower cylinder 20 provided to communicate with the left and right wind blow chambers 10, 10. On the side machine wall 5, an exhaust fan motor 2 for rotationally driving the exhaust fan 18 is provided.
1 is provided. A valve motor 22 rotationally drives the delivery valves 12 and 12 through a speed reduction mechanism.

The fuel pump 23 has a fuel valve and is provided on the lower side of the burner case 15. By opening and closing the fuel valve, the fuel pump 23 sucks the fuel in the fuel tank 24, and the burner 15 is opened. Is being supplied to. The blower 25 is provided on the upper side of the burner 15 and is driven to rotate at a variable speed by a blower motor 26 for speed change, and the combustion air corresponding to the supplied fuel amount is blown to the burner 15 by the blower 25.

In the dehumidifying device 4, the low-temperature low-pressure gas, which is a refrigerant, is adiabatically compressed into the high-temperature high-pressure gas by the compressor 44 in order to convert the sucked outside air into the dehumidifying air, and then passes through the condenser 45. The heat is removed by the heat to change to a high-temperature high-pressure liquid, and then the pressure is reduced to a low-temperature low-pressure liquid by the expansion valve 46, and when passing through the evaporator 47, heat is sucked and changed to a low-temperature low-pressure gas, and the refrigerant is sequentially cooled. This cycle is repeated, whereby the outside air wind passing through the dehumidifier 4 is dehumidified and converted into dehumidification wind. The compressor is rotationally driven by a compressor motor 48.

The diffusion plate 27 is provided at the center of the bottom plate of the transfer gutter 6 in the front-rear direction and below the supply port for supplying the transfer grains to the storage chamber 8, and evenly spreads the grains into the storage chamber 8. I'm giving back. The grain-raising machine 28 is provided outside the front side of the machine wall 5 and is provided with a belt with a bucket conveyor 29 stretched inside, and the upper end portion thereof has a throw-out cylinder 30 between the transfer gutter 6 and the starting end portion thereof. It is provided and communicated, and the lower end part is the grain collecting gutter 13
A supply gutter 31 is provided between the end portion and the end portion to communicate with each other.

Reference numeral 32 denotes a grain elevator motor, which rotationally drives the belt with the bucket conveyor 29, the transfer spiral in the transfer gutter 6, the transfer plate 27, the transfer spiral in the grain collecting gutter 13, and the like. .. The moisture sensor 2 is the grain raising machine 2.
The moisture sensor 2 is provided substantially at the center in the vertical direction of 8, and
By transmitting an electrical measurement signal from the operating device 17,
The moisture motor 33 is rotated to rotationally drive each part of the moisture sensor 2, and receives the grains falling while being conveyed to the upper portion by the bucket conveyor 29, while crushing the grains by pressure.
The water content of this crushed grain is detected.

The operating device 17 has a box shape, and the dryer 1, the moisture sensor 2, the hot air device 3, the dehumidifying device 4 and the like are put on the surface plate of the box, and each of drying and discharging is performed. Each start switch 34 for starting operation for each work, stop switch 35 for stopping operation, moisture setting scoop 36 for setting the finishing target moisture of the grain according to the operation position, drying setting scoop 37 for setting the drying method, the hot air device 3 Grain type setting shavings 38 and swelling amount setting shavings 39 for setting the mixed drying air temperature obtained by mixing the hot air generated by the burner 15 and the dehumidifying air generated by the dehumidifier 4 according to the operation position, and various display items A display unit 40 for digitally displaying, a monitor display, and the like are provided. The hot air temperature generated from the hot air device 3 and the dehumidifying air temperature generated from the dehumidifying device 4 when used alone are set by the operating positions of the grain type setting dimple 38 and the swelling amount setting dimple 39. is there.

The control device 41 is provided in the operating device 17, and the detection values detected by the moisture sensor 2 and the hot air temperature sensor 42, the operation of the switches 34 and 35, and the setting knobs 36 and 37. , 38, 39, etc. are input,
CPU 4 that performs arithmetic logic operation and comparison operation on these inputs
3 and the like, and the CPU 43 operates the motors 21 and 21.
2, 26, 32, 33, the compressor motor 48, the fuel valve, the fuel pump 23, etc. are started, stopped, and controlled. Each setting scoop 36, 37, 3
8 and 39 are rotary switch systems, and predetermined numerical values and types are set according to the operating position.

The control of drying of the grain by the control device 41 is performed as follows. That is, for example, the dry setting scoop 37 is provided with the hot air device 3 and the dehumidifier 4.
Both are operated to a position to be started, and when this operation is input to the CPU 43, the input controls the burner 15 of the hot air device 3 to generate hot air,
Further, the dehumidifying device 4 is controlled to start to generate dehumidified air, and the hot air and the dehumidified air are mixed to form a mixed dry air, and the grains are exposed to the mixed dry air and dried.

The temperature of the mixed drying air is set by operating the grain type setting knob 38 and the swelling amount setting knob 39 to predetermined positions, and inputting this operation to the CPU 43. The set mixed dry air temperature and the mixed dry air temperature detected by the hot air temperature sensor 45 are compared, and if they are different, the fuel valve and the compressor are adjusted so that the temperature becomes the same as the set mixed dry air temperature. Etc. are controlled.

Further, the drying setting pick-up 37 is the hot air device 3
Also, when the dehumidifying device 4 is operated to a position where it is independently started and this operation is input to the CPU 43, the start control and the temperature control of the hot air device 3 and the dehumidifying device 4 are independently performed by this input. In addition, the control device 41
Has the following functions. When the moisture sensor 2 detects the same grain moisture as the finishing target moisture set by operating the moisture setting scoop 37, it is detected that the drying of the grain has ended, and the dryer 1 is automatically stopped. To do.

The operation of the above embodiment will be described below. The setting scoops 36, 38, 39 of the operating device 17 are operated to predetermined positions, and the drying setting scoop 37 is operated to a position where both the hot air device 3 and the dehumidifying device 4 are started to start the drying work. By operating the start switch 34, the burner 15 of each part of the grain dryer 1 and the dehumidifier 4 of the hot air device 3 are operated.
Also, the moisture sensor 2 and the like are started, hot air is generated from the burner 15, and dehumidifying air is generated from the dehumidifying device 4, and these hot air and dehumidifying air are mixed in the hot air passage chamber 16 to form mixed dry air. The mixed dry air passes from the hot air passage chamber 16 through the air blowing chamber 11 to the grain drying chambers 9 and 9 and the exhaust air chambers 1
The exhaust air is sucked and exhausted by the air exhaust device 18 through the air passages 0, 10 and the air exhaust passage chamber 19.

The grains stored in the grain storage chamber 8 are dried by being exposed to the hot air while flowing down from the storage chamber 8 into the drying chambers 9 and 9, respectively, and fed by the feeding valves 12 and 12. It is fed to the lower part, flows down the downflow shelf 14, and is supplied to the grain collecting trough 13. From this grain collecting trough 13 through the supply gutter 31 to the grain raising machine 28, it is transferred and supplied by the lower transfer spiral, and the bucket conveyor 2
9 is conveyed to the upper part and is supplied into the transfer gutter 6 through the ejection cylinder 30 and is transferred and supplied from the transfer gutter 6 onto the diffusion plate 27 by the upper transfer spiral, and inside the storage chamber 8 by the diffusion plate 27. Is evenly diffused and reduced to circulatory drying.

When the grain moisture detected by the moisture sensor 2 is the same as the finishing target moisture set by operating the moisture setting knob 36, it is detected that the drying is completed, The controller 1 automatically controls the dryer 1 to automatically stop, and the grain drying is stopped. Further, when the drying setting scoop 37 is operated to a position where the hot air device 3 and the dehumidifying device 4 are independently started, hot air is generated from the hot air device 3 and the grains are exposed and dried. .. Dehumidifying air is generated from the dehumidifying device 4, and the grains are exposed to the dehumidifying air and dried.

[Brief description of drawings]

 The figure shows an embodiment of the invention.

FIG. 1 is an enlarged sectional view taken along line AA of FIG.

FIG. 2 is an overall side view in which a grain dryer is partially broken.

FIG. 3 is a block diagram.

FIG. 4 is an enlarged front view in which a part of the grain dryer is partially sectioned.

[Explanation of symbols]

 3 Hot air device 4 Dehumidification device 8 Grain storage chamber 9 Grain drying chamber 12 Feeding valve 13 Grain gutter 14 Flowing shelf

Claims (1)

[Claims] 1. A grain is fed from an upper grain storage chamber 8 to a lower grain drying chamber 9 by rotationally driving a feeding valve 12, and is fed from an inverted C-shaped downflow shelf 14 to a grain collecting trough 13. A mixed dry air in which both hot air generated from the hot air device 3 provided on one side of the lower side of the flow-down shelf 14 and dehumidified air generated from the dehumidifying device 4 provided on the other side are mixed; A grain drying machine, characterized in that either hot air or the dehumidifying air from the dehumidifying device 4 is blown into the drying chamber 9 to dry the grain.