EP3236185B1 - Automatic drying method for a grain dryer - Google Patents

Automatic drying method for a grain dryer Download PDF

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Publication number
EP3236185B1
EP3236185B1 EP16166201.0A EP16166201A EP3236185B1 EP 3236185 B1 EP3236185 B1 EP 3236185B1 EP 16166201 A EP16166201 A EP 16166201A EP 3236185 B1 EP3236185 B1 EP 3236185B1
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EP
European Patent Office
Prior art keywords
drying
drying sections
sections
hot air
net
Prior art date
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Application number
EP16166201.0A
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German (de)
French (fr)
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EP3236185A1 (en
Inventor
Jung-Lang Lin
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Suncue Co Ltd
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Suncue Co Ltd
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Publication date
Application filed by Suncue Co Ltd filed Critical Suncue Co Ltd
Priority to EP16166201.0A priority Critical patent/EP3236185B1/en
Priority to TR2018/11319T priority patent/TR201811319T4/en
Priority to PT16166201T priority patent/PT3236185T/en
Priority to DK16166201.0T priority patent/DK3236185T3/en
Priority to ES16166201.0T priority patent/ES2687749T3/en
Publication of EP3236185A1 publication Critical patent/EP3236185A1/en
Application granted granted Critical
Publication of EP3236185B1 publication Critical patent/EP3236185B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/10—Temperature; Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/06—Grains, e.g. cereals, wheat, rice, corn

Definitions

  • the present invention relates to an automatic drying method for a grain dryer that may provide a multi-detecting effect, may reduce the number of repeated drying, and may reduce the cost of using the automatic drying method and the automatic drying device for the grain dryer.
  • Grains such as rice, wheat or coffee beans need to be processed by a shelling process, and the husks that are shelled from the grains can be used as biomass fuels for a conventional grain dryer.
  • a heat source that is generated by burning the biomass fuels in a conventional grain dryer may be used to dry or adjust the moisture content of the grains, and this may achieve an effect of resource recovery and reuse.
  • the conventional grain dryer may be broadly divided into two categories such as a continuous-type grain dryer and a circulating-type grain dryer.
  • the continuous-type grain dryer may deliver grains continuously into the grain dryer to dry by a transport mechanism.
  • the circulating-type grain dryer may dry grains by a circular transporting way when grains have filled in the grain dryer.
  • the conventional grain dryer has a burner, a smoke pipe, a heat exchange unit, an exhaust pipe, a drying unit, and a chimney pipe group.
  • the burner has an internal combustion furnace to burn the biomass fuels to generate thermal energy.
  • the smoke pipe communicates with a top end of the internal combustion furnace to guide and exhaust the fuel gas generated from burning the biomass fuels.
  • the heat exchange unit communicates with the smoke pipe and exchanges heat with the outside cold air.
  • the exhaust pipe communicates with the heat exchange unit to guide the hot air after heat exchanging.
  • the dry unit communicates with the exhaust pipe to enable the hot air in the exhaust pipe to flow into the dry unit to dry the grains.
  • the chimney pipe group communicates with the heat exchange unit to guide and exhaust the fuel gas to the outside after heat exchanging.
  • Document RU2338984 C1 discloses a drying method for a grain dryer wherein the drying is controlled based on temperature and moisture measurements but without recirculation of the grains.
  • Document US2012/0066924 A1 discloses a drying method wherein particulate material can be returned and a more controlled drying can be done based on temperature and moisture measurements.
  • the invention is an automatic drying method for a grain dryer according to claim 1.
  • the main objective of the present invention is to provide an automatic drying method for a grain dryer that may provide a multi-detecting effect, may reduce the number of repeated drying, and may reduce the cost of using the automatic drying method for the grain dryer.
  • the automatic drying method for a grain dryer in accordance with the present invention has a preparing step, a parameter-setting step, and a multi-stage drying step.
  • the preparing step includes preparing an automatic drying device.
  • the automatic drying device has a body, at least two drying sections, and a detecting module. An interior is formed in the body. An input portion is deposited on a top of the body. An output portion is deposited on a bottom of the body. A conduit pipe is mounted on an exterior of the body and communicates with the input portion and the output portion.
  • the at least two drying sections are connected to the body at a spaced interval between the input portion and the output portion of the body. Each one of the at least two drying sections has a hot air inlet, a net-layer base, and at least one exhaust pipe.
  • the hot air inlet of each one of the at least two drying sections is deposited on the exterior of the body and communicates with the interior of the body.
  • the net-layer base of each one of the at least two drying sections is mounted in the interior of the body and communicates with the hot air inlet.
  • the at least one exhaust pipe of each one of the at least two drying sections is deposited on the exterior of the body and communicates with the net-layer base of the drying section.
  • the detecting module is connected to the body and has at least two moisture meters, at least two temperature sensors, a rotary unit, and a processing unit.
  • the at least two moisture meters are connected to the body to enable each one of the at least two moisture meters to mount below one of the net-layer bases of the at least two drying sections to detect the moisture content of a corresponding net-layer base.
  • Each one of the at least two temperature sensors is mounted in one of the at least two drying sections to detect the temperature of said corresponding drying section.
  • the rotary unit is mounted in the body.
  • the pressing unit is electrically connected to each one of the at least two moisture meters, each one of the at least two temperature sensors, and the rotary unit.
  • the parameter-setting step comprises setting a temperature value and a moisture content of each one of the at least two drying sections by the processing unit.
  • the multi-stage drying step comprises conveying pre-dried grains into each one of the at least two drying sections via the input portion and the conduit pipe of the body, importing hot air into the net-layer base of each one of the at least two drying sections via the hot air inlet to enable the pre-dried grains to absorb the thermal energy from the hot air to discharge water when the pre-dried grains pass through the net-layer base of each one of the at least two drying sections, detecting the temperature value and the moisture content of each one of the at least two drying sections respectively by the corresponding temperature sensor and moisture meter, transferring signals corresponding to the temperature value and the moisture content of each one of the at least two drying sections to the processing unit, adjusting the temperature of each one of the at least two drying sections when the moisture content of each one of the at least two drying sections is different from the preset moisture content of each one of the at least two drying sections, calculating an overall precipitation rate of the pre-dried grains adjusting an operating speed of the rotary unit by the processing unit, sending a signal to the rotary unit, and
  • an automatic drying method for a grain dryer in accordance with the present invention has a preparing step, a parameter-setting step, and a multi-stage drying step.
  • the preparing step comprises preparing an automatic drying device 10.
  • the automatic drying device 10 may be a continuous-type grain dryer or a circulating-type grain dryer.
  • the automatic drying device 10 has a body 20, at least two drying sections 30, and a detecting module 40.
  • the body 20 has an interior, an exterior, a top end, a bottom end, an input portion 21, an output portion 22, and a conduit pipe 23.
  • the interior is formed in the body 20 between the top end and the bottom end of the body 20.
  • the input portion 21 is deposited on the top end of the body 20.
  • the body 20 has a spreading tray 24 deposited in the input portion 21 of the body 20.
  • the output portion 22 is deposited on the bottom end of the body 20.
  • the body 20 further has a receiving box 25 and an output rod 26 deposited in the output portion 22 of the body 20.
  • the receiving box 25 is connected to the bottom end of the body 20 below the spreading tray 24, and communicates with the interior of the body 20.
  • the output rod 26 is rotatably mounted in the receiving box 25. Furthermore, the output rod 26 is a screw rod and is driven by a driving motor 27.
  • the conduit pipe 23 is mounted on the exterior of the body 20, communicates with the input portion 21 and the output portion 22 to convey pre-dried grains into the interior of the body 20 via the conduit pipe 23 and the input portion 21, and convey pre-dried grains into the conduit pipe 23 via the output portion 22.
  • the at least two drying sections 30 are connected to the body 20 at a spaced interval between the input portion 21 and the output portion 22, and each one of the at least two drying sections 30 has a hot air inlet 31, a net-layer base 32, and at least one exhaust pipe 33.
  • the hot air inlet 31 is deposited on the exterior of the body 20 and communicates with the interior of the body 20.
  • the net-layer base 32 is mounted in the interior of the body 20 and communicates with the hot air inlet 31.
  • the at least one exhaust pipe 33 is deposited on the exterior of the body 20 and communicates with the net-layer base 32.
  • the body 20 has a buffer layer 28 mounted between two adjacent drying sections 30 to change the flow directions of the hot air in the two adjacent drying sections 30.
  • the automatic drying device 10 has multiple drying sections 30.
  • the detecting module 40 is connected to the body 20 and has at least two moisture meters 41, at least two temperature sensors 42, a rotary unit 43, and a processing unit 44.
  • the at least two moisture meters 41 are connected to the body 20 to enable each one of the at least two moisture meters 41 to mount below one of the net-layer bases 32 of the at least two drying sections 30, and each one of the at least two moisture meters 41 is used to detect the moisture content at a corresponding net-layer base 32.
  • Each one of the at least two temperature sensors 42 is mounted in one of the at least two drying sections 30 to detect the temperature of a corresponding drying section 30.
  • the rotary unit 43 is mounted in the body 20 and has multiple rotating wheels 431 and a rotating motor 432.
  • the rotating wheels 431 are rotatably mounted in the body 20 below a bottommost net-layer base 32.
  • the rotating motor 432 is mounted in the body 20, and is connected to the rotating wheels 431 by a belt to enable the rotating wheels 431 to rotate relative to the body 20.
  • the rotating motor 432 is a frequency control motor.
  • the processing unit 44 is electrically connected to each one of the at least two moisture meters 41, and is electrically connected to each one of the at least two temperature sensors 42 and the rotary unit 43. Then, the processing unit 44 may calculate and process the detected signals provided by each one of the at least two moisture meters 41 to compute a data, to increase or lower the temperature of the hot air according to the data, and increase or lower the operating speed of the rotating wheels 431 by the rotating motor 432.
  • the processing unit 44 is a microcomputer.
  • the parameter-setting step comprises setting a temperature value and a moisture content of each one of the at least two drying sections 30 by the processing unit 44 according to a user's need.
  • the multi-stage drying step comprises conveying pre-dried grains 60 into the input portion 22 of the body 20 via the conduit pipe 23, guiding the pre-dried grains 60 into each one of the at least two drying sections 30 via the spreading tray 24, importing hot air into the net-layer base 32 of each one of the at least two drying sections 30 via the hot air inlet 31 to enable the pre-dried grains 60 to absorb the thermal energy from the hot air to discharge water when the pre-dried grains 60 passed through the net-layer base 32 of each one of the at least two drying sections 30, exhausting the hot air out of the body 20 via the at least one exhaust pipe 33 of each one of the at least two drying sections 30 after passing through the pre-dried grains 60, detecting the temperature value and the moisture content of each one of the at least two drying sections 30 respectively by the corresponding temperature sensor 42 and moisture meter 41, transferring signals corresponding to the temperature value and the moisture content of each one of the at least two drying sections 30 to the processing unit 44, increasing the temperature of each one of the at least two
  • the overall precipitation rate of the pre-dried grains 60 is defined by the moisture content before dried, the moisture content after dried, and the characteristics of the pre-dried grains 60. Furthermore, when the automatic drying device 10 has four drying sections 30, the operation process of the automatic drying device 10 is shown in Fig. 8 .
  • multiple drying sections 30 may be connected to the body 20 to enable the pre-dried grains 60 to be dried by sequentially passing through the drying sections 30.
  • the temperature value and the moisture content of each one of the drying sections 30 can be set independently.
  • the temperature sensors 42 and the moisture meters 41 of the detecting module 40 are respectively deposited in each one of the drying sections 30 to detect the moisture content of the pre-dried grains 60 in each one of the drying sections 30, and this may provide a multi-stage detecting effect to the pre-dried grains 60.
  • the temperature and conveying speed of each one of the drying sections 30 can be adjusted to enable the moisture content of the pre-dried grains 60 to meet the set moisture content of each one of the drying sections 30.
  • the user may predetermine the moisture content of the pre-dried grains 60 in each one of the drying sections 30, and this may reduce the time to repeatedly drying the pre-dried grains 60, the consumption of energy, and the cost of use. Furthermore, the numbers of the drying sections 30 to enable the pre-dried grains 60 to pass through can be adjusted according to the user's need. That is, all of the drying sections 30 may not start at the same time, and this may further meet the requirements of energy-saving and low cost.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)

Description

    1. Field of the Invention
  • The present invention relates to an automatic drying method for a grain dryer that may provide a multi-detecting effect, may reduce the number of repeated drying, and may reduce the cost of using the automatic drying method and the automatic drying device for the grain dryer.
    • 2. Description of Related Art
  • Grains such as rice, wheat or coffee beans need to be processed by a shelling process, and the husks that are shelled from the grains can be used as biomass fuels for a conventional grain dryer. A heat source that is generated by burning the biomass fuels in a conventional grain dryer may be used to dry or adjust the moisture content of the grains, and this may achieve an effect of resource recovery and reuse. The conventional grain dryer may be broadly divided into two categories such as a continuous-type grain dryer and a circulating-type grain dryer. The continuous-type grain dryer may deliver grains continuously into the grain dryer to dry by a transport mechanism. In addition, the circulating-type grain dryer may dry grains by a circular transporting way when grains have filled in the grain dryer.
  • Furthermore, the conventional grain dryer has a burner, a smoke pipe, a heat exchange unit, an exhaust pipe, a drying unit, and a chimney pipe group. The burner has an internal combustion furnace to burn the biomass fuels to generate thermal energy. The smoke pipe communicates with a top end of the internal combustion furnace to guide and exhaust the fuel gas generated from burning the biomass fuels. The heat exchange unit communicates with the smoke pipe and exchanges heat with the outside cold air. The exhaust pipe communicates with the heat exchange unit to guide the hot air after heat exchanging. The dry unit communicates with the exhaust pipe to enable the hot air in the exhaust pipe to flow into the dry unit to dry the grains. The chimney pipe group communicates with the heat exchange unit to guide and exhaust the fuel gas to the outside after heat exchanging.
  • However, when the conventional continuous-type grain dryer is in use, the moisture value of the grains in the dry unit may be detected only after the entire drying process. The grains must be dried again if the moisture value of the grains is too high. Then, the repeated drying process may increase the time of drying the grains and may also increase the consumption of energy and the cost of use. In addition, if the moisture value of the grains that have been processed by the conventional grain dryer is higher or lower than a set value, the grains after drying may not meet the user's needs. Document RU2338984 C1 discloses a drying method for a grain dryer wherein the drying is controlled based on temperature and moisture measurements but without recirculation of the grains.
  • Document US2012/0066924 A1 discloses a drying method wherein particulate material can be returned and a more controlled drying can be done based on temperature and moisture measurements. To overcome the shortcomings, the present invention provides an automatic drying method for a grain dryer to mitigate or obviate the aforementioned problems. The invention is an automatic drying method for a grain dryer according to claim 1. The main objective of the present invention is to provide an automatic drying method for a grain dryer that may provide a multi-detecting effect, may reduce the number of repeated drying, and may reduce the cost of using the automatic drying method for the grain dryer.
  • The automatic drying method for a grain dryer in accordance with the present invention has a preparing step, a parameter-setting step, and a multi-stage drying step. The preparing step includes preparing an automatic drying device. The automatic drying device has a body, at least two drying sections, and a detecting module. An interior is formed in the body. An input portion is deposited on a top of the body. An output portion is deposited on a bottom of the body. A conduit pipe is mounted on an exterior of the body and communicates with the input portion and the output portion. The at least two drying sections are connected to the body at a spaced interval between the input portion and the output portion of the body. Each one of the at least two drying sections has a hot air inlet, a net-layer base, and at least one exhaust pipe. The hot air inlet of each one of the at least two drying sections is deposited on the exterior of the body and communicates with the interior of the body. The net-layer base of each one of the at least two drying sections is mounted in the interior of the body and communicates with the hot air inlet. The at least one exhaust pipe of each one of the at least two drying sections is deposited on the exterior of the body and communicates with the net-layer base of the drying section. The detecting module is connected to the body and has at least two moisture meters, at least two temperature sensors, a rotary unit, and a processing unit. The at least two moisture meters are connected to the body to enable each one of the at least two moisture meters to mount below one of the net-layer bases of the at least two drying sections to detect the moisture content of a corresponding net-layer base.
  • Each one of the at least two temperature sensors is mounted in one of the at least two drying sections to detect the temperature of said corresponding drying section. The rotary unit is mounted in the body. The pressing unit is electrically connected to each one of the at least two moisture meters, each one of the at least two temperature sensors, and the rotary unit. The parameter-setting step comprises setting a temperature value and a moisture content of each one of the at least two drying sections by the processing unit. The multi-stage drying step comprises conveying pre-dried grains into each one of the at least two drying sections via the input portion and the conduit pipe of the body, importing hot air into the net-layer base of each one of the at least two drying sections via the hot air inlet to enable the pre-dried grains to absorb the thermal energy from the hot air to discharge water when the pre-dried grains pass through the net-layer base of each one of the at least two drying sections, detecting the temperature value and the moisture content of each one of the at least two drying sections respectively by the corresponding temperature sensor and moisture meter, transferring signals corresponding to the temperature value and the moisture content of each one of the at least two drying sections to the processing unit, adjusting the temperature of each one of the at least two drying sections when the moisture content of each one of the at least two drying sections is different from the preset moisture content of each one of the at least two drying sections, calculating an overall precipitation rate of the pre-dried grains adjusting an operating speed of the rotary unit by the processing unit, sending a signal to the rotary unit, and adjusting the temperature of the hot air.
  • Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
    • IN THE DRAWINGS:
    • Fig. 1 is a block diagram of an automatic drying method for a grain dryer in accordance with the present invention;
    • Fig. 2 is a perspective view of an automatic drying device for a grain dryer;
    • Fig. 3 is a side view of the automatic drying device for a grain dryer in Fig. 2;
    • Fig. 4 is another side view of the automatic drying device for a grain dryer in Fig. 2;
    • Fig. 5 is a side view in partial section of the automatic drying device in Fig. 4;
    • Fig. 6 is an operational block diagram of the automatic drying device in Fig. 2 under a drying process;
    • Fig. 7 is an operational side view in partial section of the automatic drying device in Fig. 4; and
    • Fig. 8 is an operational block diagram of the automatic drying device in accordance with the present invention with multi-stage drying under a drying process.
  • With reference to Figs. 1 and 2, an automatic drying method for a grain dryer in accordance with the present invention has a preparing step, a parameter-setting step, and a multi-stage drying step.
  • The preparing step comprises preparing an automatic drying device 10. Furthermore, the automatic drying device 10 may be a continuous-type grain dryer or a circulating-type grain dryer. With reference to Figs. 3 to 5, the automatic drying device 10 has a body 20, at least two drying sections 30, and a detecting module 40.
  • The body 20 has an interior, an exterior, a top end, a bottom end, an input portion 21, an output portion 22, and a conduit pipe 23. The interior is formed in the body 20 between the top end and the bottom end of the body 20. The input portion 21 is deposited on the top end of the body 20. Furthermore, the body 20 has a spreading tray 24 deposited in the input portion 21 of the body 20. The output portion 22 is deposited on the bottom end of the body 20.
  • Additionally, the body 20 further has a receiving box 25 and an output rod 26 deposited in the output portion 22 of the body 20. The receiving box 25 is connected to the bottom end of the body 20 below the spreading tray 24, and communicates with the interior of the body 20. The output rod 26 is rotatably mounted in the receiving box 25. Furthermore, the output rod 26 is a screw rod and is driven by a driving motor 27.
  • The conduit pipe 23 is mounted on the exterior of the body 20, communicates with the input portion 21 and the output portion 22 to convey pre-dried grains into the interior of the body 20 via the conduit pipe 23 and the input portion 21, and convey pre-dried grains into the conduit pipe 23 via the output portion 22.
  • The at least two drying sections 30 are connected to the body 20 at a spaced interval between the input portion 21 and the output portion 22, and each one of the at least two drying sections 30 has a hot air inlet 31, a net-layer base 32, and at least one exhaust pipe 33. The hot air inlet 31 is deposited on the exterior of the body 20 and communicates with the interior of the body 20. The net-layer base 32 is mounted in the interior of the body 20 and communicates with the hot air inlet 31. The at least one exhaust pipe 33 is deposited on the exterior of the body 20 and communicates with the net-layer base 32. In addition, the body 20 has a buffer layer 28 mounted between two adjacent drying sections 30 to change the flow directions of the hot air in the two adjacent drying sections 30. Furthermore, the automatic drying device 10 has multiple drying sections 30.
  • With reference to Figs. 5 and 6, the detecting module 40 is connected to the body 20 and has at least two moisture meters 41, at least two temperature sensors 42, a rotary unit 43, and a processing unit 44. The at least two moisture meters 41 are connected to the body 20 to enable each one of the at least two moisture meters 41 to mount below one of the net-layer bases 32 of the at least two drying sections 30, and each one of the at least two moisture meters 41 is used to detect the moisture content at a corresponding net-layer base 32.
  • Each one of the at least two temperature sensors 42 is mounted in one of the at least two drying sections 30 to detect the temperature of a corresponding drying section 30. The rotary unit 43 is mounted in the body 20 and has multiple rotating wheels 431 and a rotating motor 432. The rotating wheels 431 are rotatably mounted in the body 20 below a bottommost net-layer base 32. The rotating motor 432 is mounted in the body 20, and is connected to the rotating wheels 431 by a belt to enable the rotating wheels 431 to rotate relative to the body 20. In addition, the rotating motor 432 is a frequency control motor.
  • The processing unit 44 is electrically connected to each one of the at least two moisture meters 41, and is electrically connected to each one of the at least two temperature sensors 42 and the rotary unit 43. Then, the processing unit 44 may calculate and process the detected signals provided by each one of the at least two moisture meters 41 to compute a data, to increase or lower the temperature of the hot air according to the data, and increase or lower the operating speed of the rotating wheels 431 by the rotating motor 432. In addition, the processing unit 44 is a microcomputer.
  • The parameter-setting step comprises setting a temperature value and a moisture content of each one of the at least two drying sections 30 by the processing unit 44 according to a user's need.
  • With reference to Fig. 7, the multi-stage drying step comprises conveying pre-dried grains 60 into the input portion 22 of the body 20 via the conduit pipe 23, guiding the pre-dried grains 60 into each one of the at least two drying sections 30 via the spreading tray 24, importing hot air into the net-layer base 32 of each one of the at least two drying sections 30 via the hot air inlet 31 to enable the pre-dried grains 60 to absorb the thermal energy from the hot air to discharge water when the pre-dried grains 60 passed through the net-layer base 32 of each one of the at least two drying sections 30, exhausting the hot air out of the body 20 via the at least one exhaust pipe 33 of each one of the at least two drying sections 30 after passing through the pre-dried grains 60, detecting the temperature value and the moisture content of each one of the at least two drying sections 30 respectively by the corresponding temperature sensor 42 and moisture meter 41, transferring signals corresponding to the temperature value and the moisture content of each one of the at least two drying sections 30 to the processing unit 44, increasing the temperature of each one of the at least two drying sections 30 when the moisture content of each one of the at least two drying sections 30 is higher than the set moisture content of each one of the at least two drying sections 30, decreasing the temperature of each one of the at least two drying sections 30 when the moisture content of each one of the at least two drying sections 30 is lower than the set moisture content of each one of the at least two drying sections 30, calculating an overall precipitation rate of the pre-dried grains 60, adjusting (increasing or decreasing) the operating speed of each one of the rotating wheels 431 by the processing unit 44, sending a signal to the rotating motor 432 and adjusting the temperature of the hot air.
  • The overall precipitation rate of the pre-dried grains 60 is defined by the moisture content before dried, the moisture content after dried, and the characteristics of the pre-dried grains 60. Furthermore, when the automatic drying device 10 has four drying sections 30, the operation process of the automatic drying device 10 is shown in Fig. 8.
  • According to the above-mentioned statements, when the automatic drying method of the present invention is in use, multiple drying sections 30 may be connected to the body 20 to enable the pre-dried grains 60 to be dried by sequentially passing through the drying sections 30. In addition, the temperature value and the moisture content of each one of the drying sections 30 can be set independently. Furthermore, the temperature sensors 42 and the moisture meters 41 of the detecting module 40 are respectively deposited in each one of the drying sections 30 to detect the moisture content of the pre-dried grains 60 in each one of the drying sections 30, and this may provide a multi-stage detecting effect to the pre-dried grains 60. When the moisture content of the pre-dried grains 60 does not meet the set moisture content of each one of the drying sections 30, the temperature and conveying speed of each one of the drying sections 30 can be adjusted to enable the moisture content of the pre-dried grains 60 to meet the set moisture content of each one of the drying sections 30.
  • Then, the user may predetermine the moisture content of the pre-dried grains 60 in each one of the drying sections 30, and this may reduce the time to repeatedly drying the pre-dried grains 60, the consumption of energy, and the cost of use. Furthermore, the numbers of the drying sections 30 to enable the pre-dried grains 60 to pass through can be adjusted according to the user's need. That is, all of the drying sections 30 may not start at the same time, and this may further meet the requirements of energy-saving and low cost.

Claims (4)

  1. An automatic drying method for a grain dryer comprising:
    a preparing step comprising:
    preparing an automatic drying device (10) having a body (20), at least two drying sections (30), and a detecting module (40);
    forming an interior in the body (20);
    depositing an input portion (21) on a top end of the body (20);
    depositing an output portion (22) on a bottom end of the body (20);
    mounting a conduit pipe (23) on an exterior of the body (20) to communicate with the input portion (21) and the output portion (22);
    connecting the at least two drying sections (30) to the body (20) at a spaced interval between the input portion (21) and the output portion (22) of the body (20), and each one of the at least two drying sections (30) having a hot air inlet (31), a net-layer base (32), and at least one exhaust pipe (33);
    depositing the hot air inlet (31) of each one of the at least two drying sections (30) on the exterior of the body (20) to communicate with the interior of the body (20);
    mounting the net-layer base (32) of each one of the at least two drying sections (30) in the interior of the body (20) to communicate with the hot air inlet (31);
    depositing the at least one exhaust pipe (33) of each one of the at least two drying sections (30) on the exterior of the body (20) to communicate with the net-layer base (32) of the drying section (30);
    connecting the detecting module (40) to the body (20) with at least two moisture meters (41), at least two temperature sensors (42), a rotary unit (43), and a processing unit (44);
    connecting the at least two moisture meters (41) to the body (20) to enable each one of the at least two moisture meters (41) to mount below one of the net-layer bases (32) of the at least two drying sections (30) to detect the moisture content of a corresponding net-layer base (32);
    mounting each one of the at least two temperature sensors (42) in one of the at least two drying sections (30) to detect the temperature of said corresponding drying section (30);
    mounting the rotary unit (43) in the body (20); and
    connecting the processing unit (44) electrically to each one of the at least two moisture meters (41), each one of the at least two temperature sensors (42), and the rotary unit (43), and characterized in that the automatic drying method has:
    a parameter-setting step comprising setting a temperature value and a moisture content of each one of the at least two drying sections (30) by the processing unit (44); and
    a multi-stage drying step comprising:
    conveying pre-dried grains (60) into each one of the at least two drying sections (30) via the input portion (22) and the conduit pipe (23) of the body (20);
    importing hot air into the net-layer base (32) of each one of the at least two drying sections (30) via the hot air inlet (31) to enable the pre-dried grains (60) to absorb the thermal energy from the hot air to discharge water when the pre-dried grains (60) pass through the net-layer base (32) of each one of the at least two drying sections (30);
    exhausting the hot air out of the body (20) via the at least one exhaust pipe (33) of each one of the at least two drying sections (30) after the hot air passes through the pre-dried grains (60);
    detecting the temperature value and the moisture content of each one of the at least two drying sections (30) respectively by the corresponding temperature sensor (42) and moisture meter (41);
    transferring signals corresponding to the temperature value and the moisture content of each one of the at least two drying sections (30) to the processing unit (44);
    adjusting the temperature of each one of the at least two drying sections (30) when the moisture content of each one of the at least two drying sections (30) is different from the preset moisture content of each one of the at least two drying sections (30);
    calculating an overall precipitation rate of the pre-dried grains (60); and
    adjusting an operating speed of the rotary unit (43) by the processing unit (44), sending a signal to the rotary unit (43) and adjusting the temperature of the hot air.
  2. The automatic drying method claimed in claim 1, wherein the preparing step comprises connecting multiple drying sections (30) to the body (20) of the automatic drying device (10).
  3. The automatic drying method claimed in claim 1 or 2, wherein the preparing step comprises
    mounting multiple rotating wheels (431) rotatably in the body (20) below a bottommost net-layer base (32); and
    mounting a rotating motor (432) in the body (20) to connect with the rotating wheels (431) to enable the rotating wheels (431) to rotate relative to the body (20).
  4. The automatic drying method as claimed in claim 3, wherein the parameter-setting step comprises setting the temperature value and the moisture content of each one of the at least two drying sections (30) by the processing unit (44) according to a user's need.
EP16166201.0A 2016-04-20 2016-04-20 Automatic drying method for a grain dryer Active EP3236185B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP16166201.0A EP3236185B1 (en) 2016-04-20 2016-04-20 Automatic drying method for a grain dryer
TR2018/11319T TR201811319T4 (en) 2016-04-20 2016-04-20 Automatic drying method for a grain dryer.
PT16166201T PT3236185T (en) 2016-04-20 2016-04-20 Automatic drying method for a grain dryer
DK16166201.0T DK3236185T3 (en) 2016-04-20 2016-04-20 AUTOMATIC DRYING PROCEDURE FOR A CORINATING PLANT
ES16166201.0T ES2687749T3 (en) 2016-04-20 2016-04-20 Automatic drying method for a grain dryer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16166201.0A EP3236185B1 (en) 2016-04-20 2016-04-20 Automatic drying method for a grain dryer

Publications (2)

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EP3236185A1 EP3236185A1 (en) 2017-10-25
EP3236185B1 true EP3236185B1 (en) 2018-08-01

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EP16166201.0A Active EP3236185B1 (en) 2016-04-20 2016-04-20 Automatic drying method for a grain dryer

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EP (1) EP3236185B1 (en)
DK (1) DK3236185T3 (en)
ES (1) ES2687749T3 (en)
PT (1) PT3236185T (en)
TR (1) TR201811319T4 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111998658A (en) * 2020-08-27 2020-11-27 王福村 Drying device for preparing corn flour
CN114234577A (en) * 2021-12-22 2022-03-25 中交第一航务工程局有限公司 Natural air drying system suitable for large-volume biomass fuel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0545057A (en) * 1991-08-09 1993-02-23 Iseki & Co Ltd Operation control system for cereals processor
US5651193A (en) * 1994-02-09 1997-07-29 The Gsi Group, Inc. Grain dryer and control system therefor
JP4172002B2 (en) * 1999-08-24 2008-10-29 株式会社サタケ Circulating grain dryer
RU2338984C1 (en) * 2007-04-09 2008-11-20 Федеральное государственное образовательное учреждение высшего профессионального образования Красноярский государственный аграрный университет Grain dryer
JP4783477B2 (en) * 2009-06-23 2011-09-28 年治 安藤 Nutrient-enriched grain production device and grain drying facility equipped with the same

Also Published As

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ES2687749T3 (en) 2018-10-29
PT3236185T (en) 2018-10-24
EP3236185A1 (en) 2017-10-25
TR201811319T4 (en) 2018-08-27
DK3236185T3 (en) 2018-11-26

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