CN110579090A - Material drying device and drying method for material to reach target water content - Google Patents

Material drying device and drying method for material to reach target water content Download PDF

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Publication number
CN110579090A
CN110579090A CN201910783505.2A CN201910783505A CN110579090A CN 110579090 A CN110579090 A CN 110579090A CN 201910783505 A CN201910783505 A CN 201910783505A CN 110579090 A CN110579090 A CN 110579090A
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China
Prior art keywords
drying
humidity
control module
drying chamber
valve
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CN201910783505.2A
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Chinese (zh)
Inventor
唐军
黄金
胡艳鑫
王婷玉
陈木生
陈志锋
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Guangdong University of Technology
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Guangdong University of Technology
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Priority to CN201910783505.2A priority Critical patent/CN110579090A/en
Publication of CN110579090A publication Critical patent/CN110579090A/en
Pending legal-status Critical Current

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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
    • F26B21/08—Humidity
    • 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
    • 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
    • F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
    • 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
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/14—Chambers, containers, receptacles of simple construction
    • F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
    • 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
    • F26B25/225—Controlling the drying process in dependence on liquid content of solid materials or objects by repeated or continuous weighing of the material or a sample thereof
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention relates to the field of material drying, in particular to a material drying device and a drying method for achieving target moisture content of materials. The device comprises a drying chamber, an adjusting device, a data acquisition device and a control module, wherein the data acquisition device acquires relevant environmental information in the thin-layer drying experiment process, and the control module regulates and controls the adjusting device according to the environmental information to maintain the constant parameters of the drying medium. The device can simultaneously explore the influence of the temperature, the humidity, the wind speed and the material thickness of the drying medium on the drying performance of the material thin layer, thereby obtaining the optimal drying process parameter ratio of the material and reducing the energy consumption of the drying device. Meanwhile, the invention also provides a method for forecasting the moisture content of the material, and the method can calculate the material quality corresponding to the target moisture content of the material through the initial data of the material input by the control module, thereby greatly improving the drying effect.

Description

material drying device and drying method for material to reach target water content
Technical Field
The invention relates to the field of material drying, in particular to a material drying device and a drying method for achieving target moisture content of materials.
Background
Drying is widely applied to the fields of chemical industry, food, light industry, textile, coal, agriculture and forestry product processing and the like, but the processing mode is relatively extensive at present, and the problems of high moisture, poor moisture uniformity, uneven quality and the like of dried products generally exist. Different materials have different drying processes, and the different drying processes can greatly influence the drying quality of the materials and the energy consumption of the device, so that how to select and reasonably dry the materials (such as the temperature, the humidity, the wind speed and the thickness of the material layer) is crucial to improving the drying quality of the products and saving the drying cost.
thin-layer drying refers to a drying process in which a material layer with the thickness of less than 20mm is completely exposed to the same environmental conditions, and is the basis for researching the deep-bed drying characteristics of the material. Devices currently exploring material drying processes exist such as: generally, only 1-2 variables can be controlled simultaneously; in the drying process, the experimental materials need to be taken out at intervals to be weighed, and the operation process is complicated and time-consuming; the drying room door is frequently opened and closed in the material taking, placing and weighing process, so that the heat balance state in the drying room is damaged, and the accuracy of a drying experiment result is influenced; drying equipment can not confirm whether the material has reached its target moisture content, often causes the material to produce the too high back low scheduling problem of moisture content easily.
Disclosure of Invention
The invention provides a material drying device and method, and aims to solve the problems that in the prior art, only 1-2 variables can be controlled simultaneously during thin layer drying, the operation process is complicated, the moisture content of materials is too high and then too low, and the like.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a material drying device comprises a drying chamber, and further comprises an adjusting device, a data acquisition device and a control module, wherein the adjusting device and the data acquisition device are respectively connected with the control module; the data acquisition device is arranged in the drying chamber;
The data acquisition device is used for acquiring data of temperature, humidity, wind speed and quality of the drying object in the drying chamber and transmitting the acquired data to the control module;
The control module is used for regulating and controlling the adjusting device according to the acquired data;
The adjusting device is used for adjusting the temperature, the humidity and the air drying speed in the drying chamber.
Preferably, the adjusting device comprises a constant temperature and humidity machine, a variable frequency fan, a first valve, a second valve and a dehumidifying fan; the constant temperature and humidity machine is connected with a variable frequency fan through a pipeline, the variable frequency fan is connected with an air inlet at the bottom of the drying chamber through a pipeline, and a first valve is arranged in the pipeline connecting the variable frequency fan and the drying chamber; a T-shaped pipeline is arranged between the variable frequency fan and the first valve, and a second valve is arranged at a third port of the T-shaped pipeline; the dehumidifying fan is arranged at the top of the drying chamber, and an air outlet of the dehumidifying fan is connected with an air outlet of the drying chamber;
The constant temperature and humidity machine is used for converting ambient air into hot air with set temperature and humidity;
the variable frequency fan is used for adjusting the hot air speed to a set air speed;
the moisture exhaust fan is used for exhausting the wet air dried in the drying chamber;
The first valve and the second valve are used for controlling the circulation of air under the control of the control module.
preferably, an air equalizing plate is arranged in the drying chamber.
preferably, the data acquisition device comprises a temperature sensor, a humidity sensor, an air speed sensor and a quality sensor, wherein the output end of the temperature sensor, the output end of the humidity sensor, the output end of the air speed sensor and the output end of the quality sensor are respectively connected with the input end of the control module.
Preferably, the temperature sensor and the humidity sensor are arranged at the lower part of the air equalizing plate in the drying chamber and are used for detecting the temperature and humidity data of the drying medium; the wind speed sensor is arranged on the upper part of the wind equalizing plate in the drying chamber and used for detecting the wind speed of the drying medium; the quality sensor is arranged in the drying chamber and used for detecting the quality change of the materials in the experimental process.
When not drying, first valve and second valve are in the open mode, during the material drying process, when the device carries out drying process, close the second valve, open the hydrofuge fan, ambient air passes through constant temperature and humidity machine earlier, become the hot-air that has set temperature and humidity with ambient air, then hot-air passes through variable frequency fan, adjust the hot-air wind speed to set wind speed, after the speed governing through variable frequency fan, the hot-air that has constant temperature, humidity, wind speed gets into the drying chamber, dry the material after the even wind of air-distributing board, the wet-air after the drying is discharged through the hydrofuge fan on upper portion. During the drying period, the data acquisition device can automatically measure related data and feed back the data to the control module, and the control module can dynamically adjust the adjusting device according to the feedback condition.
When the drying time reaches the set time, the device executes a quality detection process: the control module measures the quality of the materials, opens the second valve, closes the first valve, closes the moisture exhaust fan, eliminates the interference of wind pressure on the quality sensor, and the quality sensor measures the quality of the materials. And after the measurement of the mass sensor is finished, the drying process is executed again, and the process is circulated until the drying experiment is finished.
The invention also provides a drying method for the material to reach the target water content, which is based on the device and comprises the following steps:
Step S1: starting the material drying device;
Step S2: drying medium parameters of temperature t and humiditywind speed v, initial mass m of material1initial wet basis water content omega of material1Target water content of material omega2The data of the weighing interval time x are input into the control module;
Step S3: after the input is finished, the constant temperature and humidity machine and the variable frequency fan are started, the constant temperature and humidity machine and the variable frequency fan adjust the drying chamber to adjust the temperature of the drying chamber and adjust the humidity to reach a set value;
Step S4: after the temperature and the humidity of the drying chamber reach set values, putting the material tray ready for loading materials with specific thickness into the drying chamber for experiment, and starting drying timing;
step S5: in the drying process, the control module detects the weight of the material tray through the mass sensor, a data acquisition device in the drying chamber feeds acquired data back to the control module, and the control module adjusts the adjusting device according to the acquired data; maintaining the drying parameters at set values;
step S6: when the control module calculates that the moisture content of the wet basis of the material is less than or equal to the set target moisture content, stopping drying;
step S7: and stopping the machine, closing the constant temperature and humidity machine, the variable frequency fan and the dehumidifying fan, finishing the drying timing, taking out the materials, and exporting data.
preferably, when the drying is not performed, the first valve and the second valve are in an open state, and during the material drying process, the second valve is closed, and the moisture exhaust fan in the drying chamber is started to dry the material; when the drying process reaches the set weighing time, the control module measures the mass of the materials: and closing the first valve, opening the second valve, closing the moisture exhaust fan, eliminating the interference of wind pressure on the mass sensor, performing mass measurement on the material by the mass sensor, re-executing the drying process after the mass sensor finishes measurement, and circulating until the drying is finished.
Preferably, the judgment basis for the material to reach the drying requirement is as follows: the moisture content of the wet basis of the material is less than or equal to a set target moisture content, and the indirect judgment is carried out by determining whether the mass of the material is less than or equal to the mass corresponding to the target moisture content;
Wherein, the material mass calculation formula corresponding to the target water content of the material is as follows:
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the invention has wide application range, and can be used for carrying out thin-layer drying experiments on small granular materials such as grains, sesame and the like and also flaky and blocky materials. The drying air with set temperature, set humidity and set wind speed can be obtained through the constant temperature and humidity machine and the variable frequency fan, and the influence of different drying medium parameters on the material drying performance is explored. And material layers with different thicknesses of 1-20mm can be obtained by adjusting the volume depth of the material tray (or slicing the material), and the optimal drying process of the material can be obtained through multiple groups of tests.
In addition, the material weighing device can automatically weigh the material in the drying process, and the material tray does not need to be taken out repeatedly. The influence of four main drying parameters, namely thickness, temperature, humidity and wind speed, on the material drying process in the material drying process can be simultaneously researched. The target moisture content can be set by the detectable material, the conditions of over-dryness and over-humidity of the material are avoided, and the complexity and misoperation of subsequent data processing are reduced. The drying experiment process is simple, accurate and convenient.
drawings
FIG. 1 is a block diagram of the apparatus of the present invention;
FIG. 2 is a block diagram of an operating device of the present invention;
FIG. 3 is a flow chart of an operating device of the present invention;
description of reference numerals:
The device comprises a constant temperature and humidity machine 1, a variable frequency fan 2, a second valve 3, a first valve 4, a drying chamber 5, an air equalizing plate 6, a temperature sensor 7, a humidity sensor 8, an air speed sensor 9, a mass sensor 10, a material tray 11, a dehumidifying fan 12 and a control module 13.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
It will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
the technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1 and 2, a material drying device includes a drying chamber 5, and the device further includes an adjusting device, a data collecting device and a control module 13, wherein the adjusting device and the data collecting device are respectively connected with the control module 13; the data acquisition device is arranged in the drying chamber 5;
The data acquisition device is used for acquiring data of temperature, humidity, wind speed and quality of the drying object in the drying chamber 5 and transmitting the acquired data to the control module 13;
The control module 13 is used for regulating and controlling the adjusting device according to the acquired data;
the adjusting device is used for adjusting the temperature, the humidity and the air drying speed in the drying chamber 5.
preferably, the adjusting device comprises a constant temperature and humidity machine 1, a variable frequency fan 2, a first valve 4, a second valve 3 and a moisture exhaust fan 12; the constant temperature and humidity machine 1 is connected with a variable frequency fan 2 through a pipeline, the variable frequency fan 2 is connected with an air inlet at the bottom of a drying chamber 5 through a pipeline, and a first valve 4 is arranged in the pipeline connecting the variable frequency fan 2 and the drying chamber 5; a T-shaped pipeline is arranged between the variable frequency fan 2 and the first valve 4, and a second valve 3 is arranged at a third port of the T-shaped pipeline; the dehumidifying fan 12 is arranged at the top of the drying chamber 5, and an air outlet of the dehumidifying fan 12 is connected with an air outlet of the drying chamber 5;
the constant temperature and humidity machine 1 is used for changing ambient air into hot air with set temperature and humidity;
the variable frequency fan 2 is used for adjusting the hot air speed to a set air speed;
the moisture exhausting fan 12 is used for exhausting the wet air dried in the drying chamber 5;
the first valve 4 and the second valve 3 are used to control the air circulation under the control of the control module 13.
preferably, an air equalizing plate 6 is arranged in the drying chamber 5.
preferably, the data acquisition device includes temperature sensor 7, humidity transducer 8, wind speed sensor 9 and mass sensor 10, the output of temperature sensor 7, the output of humidity transducer 8, the output of wind speed sensor 9 and the output of mass sensor 10 are connected with the input of control module 13 respectively.
preferably, the temperature sensor 7 and the humidity sensor 8 are installed at the lower part of the air equalizing plate 6 in the drying chamber 5 and are used for detecting the temperature and humidity data of the drying medium; the wind speed sensor 9 is arranged at the upper part of the wind equalizing plate 6 in the drying chamber 5 and is used for detecting the wind speed of the drying medium; the mass sensor 10 is installed in the drying chamber 5 and used for detecting the mass change of the materials in the experimental process.
when not drying, first valve 4 and second valve 3 are in the open mode, when the device moves, close second valve 3, ambient air passes through constant temperature and humidity machine 1 earlier, become the hot-air that has set temperature and humidity with ambient air, then the hot-air passes through variable frequency fan 2, adjust the hot-air wind speed to the set wind speed, after the speed governing through variable frequency fan 2, the hot-air that has constant temperature, humidity, wind speed gets into drying chamber 5, dry the material after the even wind of wind distribution board 6, the humid air after the drying is discharged through the exhaust fan on upper portion. During the drying period, the data acquisition device can automatically measure related data and feed back the data to the control module 13, and the control module 13 can dynamically adjust the adjusting device according to the feedback condition.
When the drying time reaches the set time, the control module 13 measures the material quality, opens the second valve 3, closes the first valve 4, closes the dehumidifying fan 12, eliminates the interference of the wind pressure on the quality sensor 10, and the quality sensor 10 performs the quality m on the materialtAnd (4) measuring. And after the mass sensor 10 finishes the measurement, the drying process is executed again, and the process is circulated until the drying experiment is finished.
example 2
As shown in fig. 3, the present invention further provides a drying method for a material to reach a target moisture content, wherein the method is based on the above apparatus, and comprises the following steps:
Step S1: starting the material drying device;
step S2: drying medium parameters of temperature t and humiditywind speed v, initial mass m of material1initial wet basis water content omega of material1Target water content of material omega2and the weighing interval x are input into the control module 13;
step S3: after the input is finished, the constant temperature and humidity machine 1 and the variable frequency fan 2 are started, and the temperature and humidity machine 1 and the variable frequency fan 2 adjust the temperature and the humidity of the drying chamber 5 to reach set values;
step S4: after the temperature and the humidity of the drying chamber 5 reach set values, putting the material tray 11 ready for loading materials with specific thickness into the drying chamber 5 for experiment, and starting drying timing;
Step S5: in the drying process, the control module 13 detects the weight m of the material tray 11 through the mass sensor 10tthe data acquisition device in the drying chamber 5 feeds acquired data back to the control module 13, and the control module 13 adjusts the adjusting device according to the acquired data; maintaining the drying parameters at set values;
step S6: when the control module 13 calculates that the moisture content omega of the wet base of the material is less than or equal to the set target moisture content, stopping drying;
step S7: and stopping the machine, closing the constant temperature and humidity machine 1, the variable frequency fan 2 and the dehumidifying fan 12, finishing the drying timing, taking out the materials, and exporting data.
Preferably, when the drying is not performed, the first valve 4 and the second valve 3 are in an open state, and during the material drying process, the second valve 3 is closed, and the dehumidifying fan 12 in the drying chamber 5 is started to dry the material; when the drying process reaches the set weighing time, the device executes a mass measuring process, measures the mass of the material through the control module 13, closes the first valve 4, opens the second valve 3, closes the dehumidifying fan 12, eliminates the interference of wind pressure on the mass sensor 10, measures the mass of the material by the mass sensor 10, executes the material drying program again after the mass sensor 10 finishes measuring, and circulates until the drying is finished;
preferably, the judgment basis for the material to reach the drying requirement is as follows: moisture content omega of wet base of material1not more than the set target water content omega2by determining the mass m of the materialtWhether or not the target water content is less than or equal to the corresponding mass m2To indirectly judge;
Wherein, the wet basis moisture content calculation mode of wherein material is:
mass m of oven-dried materialDry matter：
mDry matter＝m1(1-ω1)
Dry basis water content at time t:
The material quality calculation formula corresponding to the target moisture content of the material drying is as follows:
the water ratio calculation formula of the material at the time t is as follows:
Wherein x is0Indicates the initial dry basis water content of the material, xtRepresenting the dry basis water content of the material at the initial t moment;
The formula for calculating the drying rate of the material is as follows:
the same or similar reference numerals correspond to the same or similar parts;
the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (8)

1. A material drying device comprises a drying chamber (5), and is characterized by further comprising an adjusting device, a data acquisition device and a control module (13), wherein the adjusting device and the data acquisition device are respectively connected with the control module (13); the data acquisition device is arranged in the drying chamber (5);
The data acquisition device is used for acquiring data of temperature, humidity, wind speed and quality of the drying object in the drying chamber (5) and transmitting the acquired data to the control module (13);
the control module (13) is used for regulating and controlling the adjusting device according to the acquired data;
The adjusting device is used for adjusting the temperature, the humidity and the air drying speed in the drying chamber (5).
2. The material drying device according to claim 1, characterized in that the adjusting device comprises a constant temperature and humidity machine, a variable frequency fan (2), a first valve (4), a second valve (3) and a moisture exhausting fan (12); the constant temperature and humidity machine is connected with the variable frequency fan (2) through a pipeline, the variable frequency fan (2) is connected with an air inlet at the bottom of the drying chamber (5) through a pipeline, and a first valve (4) is arranged in the pipeline for connecting the variable frequency fan (2) with the drying chamber (5); a T-shaped pipeline is arranged between the variable frequency fan (2) and the first valve (4), and a second valve (3) is arranged at a third port of the T-shaped pipeline; the dehumidifying fan (12) is arranged at the top of the drying chamber (5), and an air outlet of the dehumidifying fan (12) is connected with an air outlet of the drying chamber (5);
the constant temperature and humidity machine (1) is used for changing ambient air into hot air with set temperature and humidity;
The variable frequency fan (2) is used for adjusting the hot air speed to a set air speed;
the moisture exhausting fan (12) is used for exhausting the wet air dried in the drying chamber (5);
The first valve (4) and the second valve (3) are used for controlling the circulation of air under the control of the control module (13).
3. a material drying device according to claim 2, characterised in that an air equalizing plate (6) is arranged in the drying chamber (5).
4. a material drying device according to claim 3, characterized in that the data acquisition device comprises a temperature sensor (7), a humidity sensor (8), a wind speed sensor (9) and a mass sensor (10); the output end of the temperature sensor (7), the output end of the humidity sensor (8), the output end of the wind speed sensor (9) and the output end of the quality sensor (10) are respectively connected with the input end of the control module (13).
5. the material drying device according to claim 4, characterized in that the temperature sensor (7) and the humidity sensor (8) are arranged at the lower part of the air equalizing plate (6) in the drying chamber (5) and used for detecting the temperature and humidity data of the drying medium; the wind speed sensor (9) is arranged on the upper part of the wind equalizing plate (6) in the drying chamber (5) and is used for detecting the wind speed of the drying medium; the mass sensor (10) is arranged in the drying chamber (5) and used for detecting the mass change of the materials in the experimental process.
6. a drying method for material to reach target moisture content, which is based on the material drying device of claim 5, and is characterized by comprising the following steps:
Step S1: starting the material drying device;
step S2: drying medium parameters of temperature t and humiditywind speed v, initial mass m of material1initial wet basis water content omega of material1target water content of material omega2and the weighing interval x are input into the control module (13);
Step S3: after the input is finished, the constant temperature and humidity machine (1) and the variable frequency fan (2) are started, and the constant temperature and humidity machine (1) and the variable frequency fan (2) adjust the temperature and the humidity of the drying chamber (5) to set values;
step S4: after the temperature and the humidity of the drying chamber (5) reach set values, putting the material tray ready for loading materials with specific thickness into the drying chamber (5) for experiment, and starting drying timing at the same time;
step S5: in the drying process, the control module (13) detects the weight of the material tray through the mass sensor (10), a data acquisition device in the drying chamber (5) feeds acquired data back to the control module (13), and the control module (13) adjusts the adjusting device according to the acquired data; maintaining the drying parameters at set values;
Step S6: when the control module (13) calculates that the moisture content of the wet basis of the material is less than or equal to the set target moisture content, stopping drying;
step S7: and stopping the machine, closing the constant temperature and humidity machine (1), the variable frequency fan (2) and the dehumidifying fan (11), finishing the drying timing, taking out the materials, and exporting data.
7. The drying method for the material to reach the target water content according to claim 6, characterized in that when the drying is not performed, the first valve (4) and the second valve (3) are in an open state, and during the drying process of the material, the second valve (3) is closed, and a moisture exhaust fan (12) in the drying chamber (5) is started to dry the material; when the drying process reaches the set weighing time, the control module (13) measures the mass of the materials: and closing the first valve (4), opening the second valve (3), closing the moisture exhaust fan (12), eliminating the interference of wind pressure on the mass sensor (10), performing mass measurement on the material by the mass sensor (10), and executing the drying process again after the measurement of the mass sensor (10) is finished, and circulating until the drying is finished.
8. The drying method for the material to reach the target water content according to claim 7, wherein the judgment basis for the material to reach the drying requirement is as follows: the moisture content of the wet base of the material is less than or equal to the set target moisture content, and the mass m of the material is measuredtWhether or not the water content is less than or equal to the mass m corresponding to the target water content2To indirectly judge;
wherein, the material mass calculation formula corresponding to the target water content of the material is as follows:
CN201910783505.2A 2019-08-23 2019-08-23 Material drying device and drying method for material to reach target water content Pending CN110579090A (en)

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CN113091801A (en) * 2021-03-01 2021-07-09 西南大学 Hot air thin-layer material drying experimental device and method
CN113137853A (en) * 2021-04-26 2021-07-20 四川蜀冷冷暖设备有限公司 Intelligent control method suitable for dryer
CN113137836A (en) * 2021-04-23 2021-07-20 柳州东风容泰化工股份有限公司 Drying method and system for preparing o-chlorobenzonitrile
CN113157018A (en) * 2021-04-12 2021-07-23 江苏丰尚智能科技有限公司 Method and device for controlling temperature of dryer, computer equipment and storage medium
CN113899164A (en) * 2021-10-18 2022-01-07 福建省农业机械化研究所(福建省机械科学研究院） Tremella drying process and device
CN114960262A (en) * 2022-07-27 2022-08-30 启东亦大通自动化设备有限公司 Air dryer intelligent adjusting method based on optical detection
CN117783432A (en) * 2023-12-14 2024-03-29 广东德恩农林发展有限公司 Method for detecting dryness degree of fresh bamboo shoots

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CN111076531A (en) * 2019-12-13 2020-04-28 珠海格力电器股份有限公司 Control method of drying device, drying device and controller
CN112021627A (en) * 2020-07-10 2020-12-04 张家口卷烟厂有限责任公司 System and method for monitoring abnormality of silk making assembly line
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CN113157018B (en) * 2021-04-12 2022-06-21 江苏丰尚智能科技有限公司 Method and device for controlling temperature of dryer, computer equipment and storage medium
CN113137836A (en) * 2021-04-23 2021-07-20 柳州东风容泰化工股份有限公司 Drying method and system for preparing o-chlorobenzonitrile
CN113137853A (en) * 2021-04-26 2021-07-20 四川蜀冷冷暖设备有限公司 Intelligent control method suitable for dryer
CN113899164A (en) * 2021-10-18 2022-01-07 福建省农业机械化研究所(福建省机械科学研究院） Tremella drying process and device
CN114960262A (en) * 2022-07-27 2022-08-30 启东亦大通自动化设备有限公司 Air dryer intelligent adjusting method based on optical detection
CN117783432A (en) * 2023-12-14 2024-03-29 广东德恩农林发展有限公司 Method for detecting dryness degree of fresh bamboo shoots

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Application publication date: 20191217