CN112432446A - Control method and system of hot air circulation type grain dryer - Google Patents
Control method and system of hot air circulation type grain dryer Download PDFInfo
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- CN112432446A CN112432446A CN202011342982.4A CN202011342982A CN112432446A CN 112432446 A CN112432446 A CN 112432446A CN 202011342982 A CN202011342982 A CN 202011342982A CN 112432446 A CN112432446 A CN 112432446A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000001035 drying Methods 0.000 claims abstract description 193
- 239000000463 material Substances 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 7
- 235000013339 cereals Nutrition 0.000 description 89
- 230000009172 bursting Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/08—Drying; Subsequent reconstitution
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- 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
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
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- 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
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- 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
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
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- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a control method and a control system of a hot air circulation type grain dryer, wherein an air outlet of a hot air furnace is connected with an air inlet channel of a drying chamber, an air inlet of the hot air furnace is connected with an air outlet channel of the drying chamber, residual hot air passing through the drying chamber can enter a hot air furnace to be heated again, so that hot air is recycled, and when grains are dried, the temperature of the hot air in the grain drying chamber is controlled, and the humidity in the grain drying chamber is also controlled, so that cracks of the grains in the drying process can be prevented.
Description
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to a hot air circulation type grain dryer control method and system.
Background
With the continuous increase of the annual yield of grains in China and the increase of the investment of the country on grain drying equipment, more and more large, medium and small grain drying equipment are built. The grain dryer mainly comprises a batch type circulating grain dryer and a tower type continuous dryer, wherein the batch type circulating grain dryer is mainly applied to northern areas due to limited rainfall and large workload, and the batch type circulating grain dryer is generally applied to southern areas due to large water-reducing capacity.
The heat of the existing batch type circulating grain dryer is open, namely the heat generated by a hot blast stove is discharged into a dedusting room or the atmosphere through an exhaust fan after passing through a drying section of the dryer, the hot air utilization efficiency is low in the mode, the grain circulation times are multiple, the energy consumption is high, only the hot air temperature is controlled in the drying process, the grains are easy to crack, and the waist bursting rate of the grains is too high.
Disclosure of Invention
In order to solve the technical problems, the invention provides a hot air circulation type grain drying machine control method and a hot air circulation type grain drying machine control system, which can control the temperature of hot air in a grain drying chamber and the humidity of the hot air in the grain drying chamber, prevent the grains from generating cracks in the drying process and further reduce the waist bursting rate of the grains.
The invention provides a control method of a hot air circulation type grain dryer, which is applied to the hot air circulation type grain dryer, wherein the hot air circulation type grain dryer comprises a drying chamber and a hot air furnace, the drying chamber is provided with an air inlet channel and an air outlet channel, an air outlet of the hot air furnace is connected with the air inlet channel, an air inlet of the hot air furnace is connected with the air outlet channel, and the control method of the hot air circulation type grain dryer comprises the following steps:
acquiring real-time temperature and real-time humidity in the drying chamber;
generating a temperature control parameter of the drying chamber based on the real-time temperature and a preset target temperature, and generating a humidity control parameter of the drying chamber based on the real-time humidity and a preset target humidity;
adjusting a temperature of the drying chamber based on the temperature control parameter, and adjusting a humidity of the drying chamber based on the humidity control parameter.
Preferably, the air inlet channel is provided with an air inlet, the air inlet is provided with an air inlet valve, the air outlet channel is provided with an air outlet, and the air outlet is provided with an air outlet valve;
the temperature of the drying chamber is adjusted based on the temperature control parameter, specifically:
and adjusting the opening degrees of the air inlet valve and the air outlet valve based on the temperature control parameter so as to adjust the temperature of the drying chamber.
Preferably, the air outlet channel is provided with a moisture exhaust port, and the moisture exhaust port is provided with a moisture exhaust valve;
based on the humidity control parameter, the humidity of the drying chamber is adjusted, and the method specifically comprises the following steps:
and adjusting the opening degree of the moisture exhaust valve based on the humidity control parameter so as to adjust the humidity of the drying chamber.
Preferably, the drying chamber is divided into a plurality of drying zones from top to bottom, each drying zone is provided with an air adjusting opening, and each air adjusting opening is communicated with the air inlet channel;
the control method of the hot air circulation type grain dryer further comprises the following steps:
acquiring the material level of the grains in each drying area;
determining a target value of hot air required by each drying area based on the grain material level;
and respectively adjusting the air intake of each drying area based on the target value of the hot air.
Preferably, each air adjusting opening is provided with an air adjusting valve;
the method comprises the following steps of respectively adjusting the air intake of each drying area based on the target value of hot air, and specifically comprises the following steps:
and respectively adjusting the opening degree of each air adjusting valve based on the target value of the hot air so as to adjust the air intake of each drying area.
The second aspect of the present invention provides a heated air circulation type grain dryer control system applied to a heated air circulation type grain dryer, the heated air circulation type grain dryer including a drying chamber and a hot-blast stove, the drying chamber having an air inlet channel and an air outlet channel, an air outlet of the hot-blast stove being connected to the air inlet channel, an air inlet of the hot-blast stove being connected to the air outlet channel, the heated air circulation type grain dryer control system including:
the acquisition unit is used for acquiring real-time temperature and real-time humidity in the drying chamber;
the generating unit is used for generating a temperature control parameter of the drying chamber based on the real-time temperature and a preset target temperature, and generating a humidity control parameter of the drying chamber based on the real-time humidity and a preset target humidity;
and the adjusting unit is used for adjusting the temperature of the drying chamber based on the temperature control parameter and adjusting the humidity of the drying chamber based on the humidity control parameter.
Preferably, the air inlet channel is provided with an air inlet, the air inlet is provided with an air inlet valve, the air outlet channel is provided with an air outlet, and the air outlet is provided with an air outlet valve;
the adjusting unit is specifically used for adjusting the opening degrees of the air inlet valve and the air outlet valve based on the temperature control parameter so as to adjust the temperature of the drying chamber.
Preferably, the air outlet channel is provided with a moisture exhaust port, and the moisture exhaust port is provided with a moisture exhaust valve;
the adjusting unit is further specifically used for adjusting the opening degree of the moisture discharging valve based on the humidity control parameter so as to adjust the humidity of the drying chamber.
Preferably, the drying chamber is divided into a plurality of drying zones from top to bottom, each drying zone is provided with an air adjusting opening, and each air adjusting opening is communicated with the air inlet channel;
the acquisition unit is further used for acquiring the grain material level in each drying area;
the generating unit is further used for determining a target value of hot air required by each drying area based on the grain material level;
the adjusting unit is further used for respectively adjusting the air intake of each drying area based on the target value of the hot air.
Preferably, each air adjusting opening is provided with an air adjusting valve;
the adjusting unit is further specifically configured to adjust the opening degree of each air adjusting valve to adjust the intake air volume of each drying area.
The hot air circulation type grain dryer control method and the hot air circulation type grain dryer control system are characterized in that an air outlet of a hot air furnace is connected with an air inlet channel of a drying chamber, an air inlet of the hot air furnace is connected with an air outlet channel of the drying chamber, residual hot air after passing through the drying chamber can enter the hot air furnace to be heated again, so that hot air is recycled, and when grains are dried, the temperature of the hot air in the grain drying chamber is controlled, and meanwhile, the humidity in the grain drying chamber is controlled, so that cracks of the grains can be prevented from being generated in the drying process.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a hot air circulation type grain dryer according to an embodiment of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic flow chart of a control method of a hot air circulation type grain dryer according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a hot air circulation type grain dryer control system according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of a plurality of or a plurality of is two or more unless specifically limited otherwise.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for understanding and reading the contents disclosed in the specification, and are not used for limiting the conditions that the present application can implement, so the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the technical content disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.
Embodiments of the present invention are written in a progressive manner.
Referring to fig. 1 to 4, fig. 1 is a schematic structural view of a hot air circulation type grain dryer according to an embodiment of the present invention; FIG. 2 is a side view of FIG. 1; FIG. 3 is a schematic flow chart of a control method of a hot air circulation type grain dryer according to an embodiment of the present invention; fig. 4 is a schematic structural diagram of a hot air circulation type grain dryer control system according to an embodiment of the present invention.
It should be noted that the control method and system for the hot air circulation type grain dryer provided by the embodiment of the present invention are mainly applied to a hot air circulation type grain dryer, wherein the hot air circulation type grain dryer includes a drying chamber 1 and a hot air furnace 2, the drying chamber 1 is provided with an air inlet channel 11 and an air outlet channel 12, an air outlet of the hot air furnace 2 is connected to the air inlet channel 11, an air inlet of the hot air furnace 2 is connected to the air inlet channel 11 of the drying chamber 1, an air inlet of the hot air furnace 2 is connected to the air outlet channel 12 of the drying chamber 1, hot air generated by the hot air furnace 2 enters the drying chamber 1 through the air inlet channel 11 to dry grains, and residual hot air after passing through the drying chamber 1 can enter the hot air furnace 2 through the air outlet channel 12 to be heated again, so as to recycle hot air.
The control method of the hot air circulation type grain dryer comprises the following steps:
and S100, acquiring real-time temperature and real-time humidity in the drying chamber 1.
In the embodiment of the invention, the real-time temperature and the real-time humidity in the drying chamber 1 can be respectively obtained through the temperature sensor and the humidity sensor, wherein the real-time temperature in the drying chamber 1 comprises the real-time temperature of the circulating hot air in the drying chamber 1 and the real-time temperature of grains, and the real-time humidity in the drying chamber 1 mainly refers to the real-time humidity of the circulating hot air in the drying chamber 1.
S200, generating a temperature control parameter of the drying chamber 1 based on the real-time temperature and the preset target temperature, and generating a humidity control parameter of the drying chamber 1 based on the real-time humidity and the preset target humidity.
In the embodiment of the invention, after the real-time temperature, the real-time humidity and the real-time temperature of the circulating hot air in the drying chamber 1 are obtained, according to the deviation between the real-time temperature, the real-time humidity and the preset temperature of the circulating hot air in the drying chamber 1 and the preset temperature of the grain, corresponding control parameters based on the temperature can be generated, the temperature of the drying chamber 1 can be adjusted, and the humidity control parameters of the drying chamber 1 can be adjusted based on the humidity control parameters.
S300, adjusting the temperature of the drying chamber 1 based on the temperature control parameter, and adjusting the humidity of the drying chamber 1 based on the humidity control parameter.
It should be noted that, when the grains are dried, if the drying time is too long, the grains are easy to crack, and the cracking rate is too high, so a strict tempering ratio must be designed, generally 5-8: 1, the drying efficiency is slow, and the grains are dried in a bin, which usually needs to be circulated for more than 10 times, and the mechanical breakage rate of the grains is increased.
In the embodiment of the invention, the temperature of hot air in the drying chamber 1 is controlled, and the humidity in the drying chamber 1 is also controlled, so that circulating hot air in the drying chamber 1 keeps certain humidity, and cracks of grains can be prevented in the drying process, therefore, the drying area in the drying chamber 1 can be designed to be longer, the grain drying time is prolonged, the grains are kept at higher temperature for a long time in the drying process, the dehydration rate of the grains is favorably improved, particularly the migration rate of bound water in the grains is improved, the drying efficiency of the grains is improved, and the fast and good drying effect of the grains can be achieved.
As can be seen from the above, in the method for controlling a hot air circulation type grain dryer provided in the embodiments of the present invention, the air outlet of the hot air furnace is connected to the air inlet channel of the drying chamber, and the air inlet of the hot air furnace is connected to the air outlet channel of the drying chamber, so that the remaining hot air after passing through the drying chamber can enter the hot air furnace to be reheated, thereby recycling the hot air, and during grain drying, not only the temperature of the hot air in the grain drying chamber is controlled, but also the humidity in the grain drying chamber is controlled, thereby preventing cracks from occurring in the grain during drying.
As a preferred embodiment of the present invention, the air inlet channel 11 is provided with an air inlet 111, the air inlet 111 is provided with an air inlet valve 112, the air outlet channel 12 is provided with an air outlet 121, and the air outlet 121 is provided with an air outlet valve 122.
In step S300, the temperature of the drying chamber 1 is adjusted based on the temperature control parameter, specifically:
based on the temperature control parameter, the opening degrees of the air inlet valve 112 and the air outlet valve 122 are adjusted to adjust the temperature of the drying chamber 1.
In the embodiment of the present invention, the amount of the hot air entering the drying chamber 1 can be adjusted by adjusting the opening degrees of the air inlet valve 112 and the air outlet valve 122, so as to adjust the temperature of the drying chamber 1. It is understood that the inlet valve 112 and the outlet valve 122 may be completely closed when there is no need to introduce new hot air into the drying chamber 1.
Further, in the above embodiment, the air outlet channel 12 is provided with the moisture exhausting opening 123, and the moisture exhausting opening 123 is provided with the moisture exhausting valve 124;
in step S300, the humidity of the drying chamber 1 is adjusted based on the humidity control parameter, specifically:
based on the humidity control parameter, the opening degree of the dehumidifying valve 124 is adjusted to adjust the humidity of the drying chamber 1.
In the embodiment of the present invention, the humidity in the drying chamber 1 can be adjusted by adjusting the opening of the humidity exhaust valve 124. It is understood that, when the humidity in the drying chamber 1 is lower than a certain value, the humidity discharging valve 124 may be closed, so that the humidity in the drying chamber 1 is controlled within a certain range.
Further, in the above embodiment, the drying chamber 1 is divided into a plurality of drying zones from top to bottom, each drying zone is provided with an air adjusting opening 13, and each air adjusting opening 13 is communicated with the air inlet channel 11;
the control method of the hot air circulation type grain dryer further comprises the following steps:
acquiring the material level of the grains in each drying area;
determining target values of hot air required by each drying area based on the grain material level;
and respectively adjusting the air intake of each drying area based on the target value of the hot air.
In the embodiment of the invention, the drying chamber 1 is divided into a plurality of drying areas from top to bottom, the material level of the grains in each drying area is obtained through the material level sensors arranged in each drying area, the target value of hot air required by each drying area can be determined according to the material level of the grains in each drying area, and corresponding hot air quantity is respectively introduced into each drying area, so that the utilization rate of the hot air is improved. Particularly, when only a small amount of cereal stoving operation, the cereal that is located the drying zone on upper strata and carries out the stoving operation is less even does not have cereal and carries out the stoving operation, at this moment, can reduce the hot blast volume that lets in the drying zone on upper strata, stops even to let in hot-blast to the drying zone on upper strata, only utilizes the bottom drying zone to carry out cereal stoving operation, solves the demand of a small amount of cereal stoving operation.
Further, in the above embodiment, each air adjusting opening 13 is provided with an air adjusting valve 131;
based on the target value of hot air, the intake of each drying zone is adjusted respectively, specifically:
based on the target value of the hot air, the opening degree of each air regulating valve 131 is adjusted respectively to adjust the intake air volume of each drying zone.
In the embodiment of the invention, the air intake of each drying area can be adjusted by adjusting the opening degree of each air adjusting valve 131. It can be understood that when no grain is dried in the upper drying zone, the damper 131 in the corresponding drying zone can be closed, and only the bottom drying zone is used for grain drying.
The above embodiment introduces the flow of the control method of the heated air circulation type grain dryer, and the following describes a heated air circulation type grain dryer control system for implementing the method.
The embodiment of the invention provides a hot air circulation type grain dryer control system, which comprises:
an acquiring unit 100 for acquiring a real-time temperature and a real-time humidity in the drying chamber 1;
a generating unit 200 for generating a temperature control parameter of the drying chamber 1 based on the real-time temperature and a preset target temperature, and generating a humidity control parameter of the drying chamber 1 based on the real-time humidity and a preset target humidity;
an adjusting unit 300 for adjusting the temperature of the drying chamber 1 based on the temperature control parameter, and adjusting the humidity of the drying chamber 1 based on the humidity control parameter.
As a preferred embodiment of the present invention, the air inlet channel 11 is provided with an air inlet 111, the air inlet 111 is provided with an air inlet valve 112, the air outlet channel 12 is provided with an air outlet 121, and the air outlet 121 is provided with an air outlet valve 122;
the adjusting unit 300 is specifically configured to adjust the opening degrees of the air inlet valve 112 and the air outlet valve 122 based on the temperature control parameter, so as to adjust the temperature of the drying chamber 1.
As a preferred embodiment of the present invention, the air outlet channel 12 is provided with a moisture discharging port 123, and the moisture discharging port 123 is provided with a moisture discharging valve 124;
the adjusting unit 300 is further specifically configured to adjust an opening degree of the humidity discharging valve 124 based on the humidity control parameter, so as to adjust the humidity of the drying chamber 1.
As the preferred embodiment of the invention, the drying chamber 1 is divided into a plurality of drying areas from top to bottom, each drying area is provided with an air adjusting opening 13, and each air adjusting opening 13 is communicated with the air inlet channel 11;
the obtaining unit 100 is further configured to obtain grain material levels in the drying zones;
the generating unit 200 is further configured to determine a target value of hot air required by each drying zone based on the grain material level;
the adjusting unit 300 is further configured to adjust the intake air volume of each drying zone based on the target value of the hot air.
As a preferred embodiment of the present invention, each air adjusting opening 13 is provided with an air adjusting valve 131;
the adjusting unit 300 is further specifically configured to adjust the opening degree of each air regulating valve 131 based on the target value of the hot air, so as to adjust the intake air volume of each drying zone.
As can be seen from the above, according to the hot air circulation type grain dryer control system provided by the embodiment of the present invention, the air outlet of the hot air furnace is connected to the air inlet channel of the drying chamber, and the air inlet of the hot air furnace is connected to the air outlet channel of the drying chamber, so that the residual hot air passing through the drying chamber can enter the hot air furnace to be reheated, thereby recycling the hot air, and during grain drying, not only is the temperature of the hot air in the grain drying chamber controlled, but also the humidity in the grain drying chamber is controlled, thereby preventing cracks from occurring in the grain drying process.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a heated air circulation type grain drying machine control method, its characterized in that is applied to heated air circulation type grain drying machine, heated air circulation type grain drying machine includes drying chamber and hot-blast furnace, the drying chamber is equipped with inlet air duct and air-out passageway, the air outlet of hot-blast furnace is connected inlet air duct, the air intake connection of hot-blast furnace the air-out passageway, heated air circulation type grain drying machine control method includes:
acquiring real-time temperature and real-time humidity in the drying chamber;
generating a temperature control parameter of the drying chamber based on the real-time temperature and a preset target temperature, and generating a humidity control parameter of the drying chamber based on the real-time humidity and a preset target humidity;
adjusting a temperature of the drying chamber based on the temperature control parameter, and adjusting a humidity of the drying chamber based on the humidity control parameter.
2. The control method of the hot air circulation type grain dryer according to claim 1, wherein the air inlet passage is provided with an air inlet valve, the air outlet passage is provided with an air outlet, and the air outlet is provided with an air outlet valve;
the temperature of the drying chamber is adjusted based on the temperature control parameter, specifically:
and adjusting the opening degrees of the air inlet valve and the air outlet valve based on the temperature control parameter so as to adjust the temperature of the drying chamber.
3. The control method of the hot air circulation type grain dryer according to claim 2, wherein the air outlet passage is provided with a moisture discharge port, and the moisture discharge port is provided with a moisture discharge valve;
based on the humidity control parameter, the humidity of the drying chamber is adjusted, and the method specifically comprises the following steps:
and adjusting the opening degree of the moisture exhaust valve based on the humidity control parameter so as to adjust the humidity of the drying chamber.
4. The control method of the hot air circulation type grain dryer according to claim 3, wherein the drying chamber is divided into a plurality of drying zones from top to bottom, each drying zone is provided with an air adjusting port, and each air adjusting port is communicated with the air inlet channel;
the control method of the hot air circulation type grain dryer further comprises the following steps:
acquiring the material level of the grains in each drying area;
determining a target value of hot air required by each drying area based on the grain material level;
and respectively adjusting the air intake of each drying area based on the target value of the hot air.
5. The control method of the hot air circulation type grain dryer according to claim 4, wherein each of the air adjusting ports is provided with an air adjusting valve;
the method comprises the following steps of respectively adjusting the air intake of each drying area based on the target value of hot air, and specifically comprises the following steps:
and respectively adjusting the opening degree of each air adjusting valve based on the target value of the hot air so as to adjust the air intake of each drying area.
6. The utility model provides a heated air circulation type grain drying machine control system, its characterized in that is applied to heated air circulation type grain drying machine, heated air circulation type grain drying machine includes drying chamber and hot-blast furnace, the drying chamber is equipped with inlet air duct and air-out passageway, the air outlet of hot-blast furnace is connected inlet air duct, the air intake connection of hot-blast furnace the air-out passageway, heated air circulation type grain drying machine control system includes:
the acquisition unit is used for acquiring real-time temperature and real-time humidity in the drying chamber;
the generating unit is used for generating a temperature control parameter of the drying chamber based on the real-time temperature and a preset target temperature, and generating a humidity control parameter of the drying chamber based on the real-time humidity and a preset target humidity;
and the adjusting unit is used for adjusting the temperature of the drying chamber based on the temperature control parameter and adjusting the humidity of the drying chamber based on the humidity control parameter.
7. The heated air circulation type grain dryer control system according to claim 6, wherein the air inlet passage is provided with an air inlet valve, the air outlet passage is provided with an air outlet, and the air outlet is provided with an air outlet valve;
the adjusting unit is specifically used for adjusting the opening degrees of the air inlet valve and the air outlet valve based on the temperature control parameter so as to adjust the temperature of the drying chamber.
8. The control method of the hot air circulation type grain dryer according to claim 7, wherein the air outlet passage is provided with a moisture discharge port, and the moisture discharge port is provided with a moisture discharge valve;
the adjusting unit is further specifically used for adjusting the opening degree of the moisture discharging valve based on the humidity control parameter so as to adjust the humidity of the drying chamber.
9. The control system of the hot air circulation type grain dryer according to claim 8, wherein the drying chamber is divided into a plurality of drying zones from top to bottom, each drying zone is provided with an air adjusting opening, and each air adjusting opening is communicated with the air inlet channel;
the acquisition unit is further used for acquiring the grain material level in each drying area;
the generating unit is further used for determining a target value of hot air required by each drying area based on the grain material level;
the adjusting unit is further used for respectively adjusting the air intake of each drying area based on the target value of the hot air.
10. The hot air circulation type grain dryer control system according to claim 9, wherein each of the air adjusting ports is provided with an air adjusting valve;
the adjusting unit is further specifically configured to adjust the opening degree of each air adjusting valve to adjust the intake air volume of each drying area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011342982.4A CN112432446B (en) | 2020-11-25 | 2020-11-25 | Control method and system of hot air circulation type grain dryer |
Applications Claiming Priority (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246220A1 (en) * | 2022-06-24 | 2023-12-28 | 宁德时代新能源科技股份有限公司 | Electrode plate drying apparatus, battery production device, and electrode plate drying method |
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|---|---|
| CN112432446B (en) | 2022-06-24 |
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