CN113670015A - Hot air drying system and use method thereof - Google Patents
Hot air drying system and use method thereof Download PDFInfo
- Publication number
- CN113670015A CN113670015A CN202110835251.1A CN202110835251A CN113670015A CN 113670015 A CN113670015 A CN 113670015A CN 202110835251 A CN202110835251 A CN 202110835251A CN 113670015 A CN113670015 A CN 113670015A
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- drying
- humidity
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- controller
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- 238000007602 hot air drying Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 20
- 238000001035 drying Methods 0.000 claims abstract description 77
- 239000003990 capacitor Substances 0.000 claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 238000009423 ventilation Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 4
- 230000006698 induction Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Images
Classifications
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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
- F26B9/066—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers the products to be dried being disposed on one or more containers, which may have at least partly gas-previous walls, e.g. trays or shelves in a stack
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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
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- 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
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- 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
-
- 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
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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
- F26B3/04—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 circulating over or surrounding 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
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- Molecular Biology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a hot air drying system which comprises a box body, a heating pipe group, a fan and a material tray, wherein the heating pipe group is arranged on the box body; the box body is provided with a controller which is connected with the heating pipe group and the fan in a control mode; the lower half part of the box body is a drying cavity, the material tray is arranged in the drying cavity, and ventilation openings are formed in two sides of the material tray; the upper half part of the box body is a heating cavity, the fan is arranged in the heating cavity, and the heating pipe group corresponds to the air outlet end of the fan; the heating cavity is provided with an air inlet, and the drying cavity is provided with an air outlet; the parallel plate capacitor can generate magnetic induction after being electrified, when the water content in the material held by the middle material tray is more, the drying speed in the material tray is accelerated, and the defect that the material is dried from the outer surface to the inner surface in the prior art can be overcome; the voltage of the parallel plate capacitor is adjusted to change the loss speed of the moisture of the material, and the air inlet and the air outlet are opened in a matched mode to improve and reduce the air humidity in the drying cavity, so that the drying speed of the material is kept unchanged, and the quality of the dried material is guaranteed.
Description
Technical Field
The invention relates to the technical field of material drying, in particular to a hot air drying system and a using method thereof.
Background
The drying equipment can vaporize and escape moisture in the material through heat energy, so as to reduce the moisture of the material, thereby obtaining the solid material with set moisture content, and the method is generally used for drying objects; in actual social production, the water content of materials probably directly influences the technological process and technological conditions of production, influences the investment of manpower and material resources, and generally dries the materials in order to reduce and reach the required water content; at present, the existing drying equipment measures the humidity of a drying environment through built-in humidity measuring equipment, and judges the drying degree of materials according to the humidity, but when the humidity measuring equipment is used for certain processes which have higher requirements on the quantity of materials containing water and have higher precision, the humidity measuring equipment adopted by the existing drying equipment measures the humidity of air by measuring the evaporation or absorption of water, so that the humidity cannot be measured more accurately, the measurement of the actual drying degree of the materials can only be controlled within a certain range, and therefore, in order to meet the process requirements, the drying equipment capable of accurately measuring the drying degree of the materials needs to be developed.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the hot air drying system and the use method thereof, which can accurately measure the drying degree of the material.
The technical scheme is as follows: in order to achieve the purpose, the hot air drying system comprises a box body, a heating pipe group, a fan and a material tray; the box body is provided with a controller which is connected with the heating pipe group and the fan in a control mode; the lower half part of the box body is a drying cavity, the material tray is arranged in the drying cavity, and ventilation openings are formed in two sides of the material tray; the upper half part of the box body is a heating cavity, the fan is arranged in the heating cavity, and the heating pipe group corresponds to the air outlet end of the fan; the heating chamber is provided with an air inlet, and the drying chamber is provided with an air outlet.
Furthermore, an upper parallel capacitor plate is arranged above the material tray, and a lower parallel capacitor plate is arranged below the material tray; the parallel capacitor upper plate and the parallel capacitor lower plate are in circuit connection with a controller; the upper parallel capacitor plate is connected to the positive circuit pole, and the lower parallel capacitor plate is connected to the negative circuit pole.
Further, the distance between the upper plate of the parallel capacitor and the material tray is equal to the distance between the lower plate of the parallel capacitor and the material tray.
Furthermore, the working voltage of the parallel plate capacitor consisting of the parallel capacitor upper plate and the parallel capacitor lower plate is 10-50 KV.
Further, the working voltage of the parallel plate capacitor formed by the upper plate and the lower plate of the parallel capacitor can be changed in stages according to the drying requirement, and can also be kept constant in the whole drying process.
Further, the controller includes a temperature sensor and a humidity sensor; the temperature sensor and the humidity sensor correspond to the drying chamber.
Further, the controller controls the air inlet and the air outlet to be automatically opened or closed.
A use method of a hot air drying system is used for controlling and adjusting the drying effect of a drying cavity; the temperature set in the drying cavity is t, the humidity set in the drying cavity is rh, and the default working voltage of the parallel plate capacitor is v; the method is characterized by comprising the following steps:
(1) when the humidity in the drying cavity is higher than the set humidity rh, the controller controls the air inlet and the air outlet to be kept in an opening state, and meanwhile, the working voltage of the parallel plate capacitor is adjusted to v1 until the humidity in the drying cavity reaches the set humidity rh;
(2) when the humidity in the drying cavity is lower than the set humidity rh, the controller controls the air inlet and the air outlet to be kept in a closed state, and meanwhile, the working voltage of the parallel plate capacitor is adjusted to v2 until the humidity in the drying cavity reaches the set humidity rh;
(3) when the temperature in the drying cavity is higher than the set temperature t, the controller closes the heating pipe set until the temperature in the drying cavity is lower than the set temperature t;
(4) when the temperature in the drying cavity is lower than the set temperature t, the controller starts the heating pipe set until the temperature in the drying cavity is higher than the set temperature t.
Has the advantages that: the hot air drying system and the using method thereof can accurately measure the drying degree of the material, and include but are not limited to the following technical effects:
1) the parallel plate capacitor can generate magnetic induction after being electrified, when the water content in the material held by the middle material tray is more, the drying speed in the material tray is accelerated, and the defect that the material is dried from the outer surface to the inner surface in the prior art can be overcome;
2) the voltage of the parallel plate capacitor is adjusted to change the loss speed of the moisture of the material, the air inlet and the air outlet are opened in a matched mode to improve and reduce the air humidity in the drying cavity, the drying speed of the material can be kept unchanged when the air humidity is too high, and the quality of the dried material is guaranteed.
Drawings
FIG. 1 is an internal structural view of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in the attached figure 1: a hot air drying system comprises a box body 1, a heating pipe group 2, a fan 3 and a material tray 4; the box body 1 is provided with a controller 13, and the controller 13 is connected with the heating pipe set 2 and the fan 3 in a control mode; the lower half part of the box body 1 is a drying cavity, the material tray 4 is arranged in the drying cavity, and ventilation openings 41 are formed in two sides of the material tray 4; the upper half part of the box body 1 is a heating cavity, the fan 3 is arranged in the heating cavity, and the heating pipe group 2 corresponds to the air outlet end of the fan 3; the heating cavity is provided with an air inlet 11, and the drying cavity is provided with an air outlet 12; charging tray 4 is used for holding the dry material of needs, and fan 3 work makes 1 inside production air current circulation of box, carries out the drying to the material, and controller 13 can change the drying rate of material according to the humidity and the temperature adjustment heating group 2 heating temperature of dry chamber simultaneously.
An upper parallel capacitor plate 42 is arranged above the charging tray 4, and a lower parallel capacitor plate 43 is arranged below the charging tray 4; the parallel capacitor upper plate 42 and the parallel capacitor lower plate 43 are electrically connected to the controller 13; the parallel capacitor upper plate 42 is connected to the positive pole of the circuit, and the parallel capacitor lower plate 43 is connected to the negative pole of the circuit; the parallel plate capacitor composed of the parallel capacitor upper plate 42 and the parallel capacitor lower plate 43 can generate magnetic induction after being electrified, when the water content in the material contained in the middle material plate 4 is more, the drying speed in the material is accelerated, and the defect that the material is dried from the outer surface to the inner surface in the prior art can be overcome.
The distance dimension from the parallel capacitor upper plate 42 to the tray 4 is equal to the distance dimension from the parallel capacitor lower plate 43 to the tray 4.
The working voltage of the parallel plate capacitor consisting of the parallel capacitor upper plate 42 and the parallel capacitor lower plate 43 is 10-50 KV.
The working voltage of the parallel plate capacitor formed by the parallel capacitor upper plate 42 and the parallel capacitor lower plate 43 can be changed in stages according to the drying requirement, and can also be kept constant in the whole drying process.
The controller 13 includes a temperature sensor and a humidity sensor; the temperature sensor and the humidity sensor correspond to the drying chamber.
The controller 13 controls the air inlet 11 and the air outlet 12 to be automatically opened or closed.
A use method of a hot air drying system is used for controlling and adjusting the drying effect of a drying cavity; the temperature set in the drying cavity is t, the humidity set in the drying cavity is rh, and the default working voltage of the parallel plate capacitor is v; the method is characterized by comprising the following steps:
(1) when the humidity in the drying cavity is higher than the set humidity rh, the controller 13 controls the air inlet 11 and the air outlet 12 to keep an open state, and simultaneously adjusts the working voltage of the parallel plate capacitor to v1 until the humidity in the drying cavity reaches the set humidity rh;
(2) when the humidity in the drying cavity is lower than the set humidity rh, the controller 13 controls the air inlet 11 and the air outlet 12 to keep a closed state, and simultaneously adjusts the working voltage of the parallel plate capacitor to v2 until the humidity in the drying cavity reaches the set humidity rh;
(3) when the temperature in the drying cavity is higher than the set temperature t, the controller 13 closes the heating tube set 2 until the temperature in the drying cavity is lower than the set temperature t;
(4) when the temperature in the drying chamber is lower than the set temperature t, the controller 13 turns on the heating pipe group 2 until the temperature in the drying chamber is higher than the set temperature t.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. A hot air drying system is characterized in that: comprises a box body (1), a heating pipe group (2), a fan (3) and a material tray (4); the box body (1) is provided with a controller (13), and the controller (13) is connected with the heating pipe set (2) and the fan (3) in a control mode; the lower half part of the box body (1) is a drying cavity, the material tray (4) is arranged in the drying cavity, and ventilation openings (41) are formed in two sides of the material tray (4); the upper half part of the box body (1) is a heating cavity, the fan (3) is arranged in the heating cavity, and the heating pipe set (2) corresponds to the air outlet end of the fan (3); the heating chamber is equipped with air intake (11), dry chamber is equipped with air outlet (12).
2. The hot air drying system and the use method thereof according to claim 1, characterized in that: an upper parallel capacitor plate (42) is arranged above the charging tray (4), and a lower parallel capacitor plate (43) is arranged below the charging tray (4); the parallel capacitor upper plate (42) and the parallel capacitor lower plate (43) are electrically connected to a controller (13); the parallel capacitor upper plate (42) is connected to the circuit positive pole, and the parallel capacitor lower plate (43) is connected to the circuit negative pole.
3. The hot air drying system and the use method thereof according to claim 2, characterized in that: the distance between the upper plate (42) of the parallel capacitor and the material tray (4) is equal to the distance between the lower plate (43) of the parallel capacitor and the material tray (4).
4. The hot air drying system and the use method thereof according to claim 2, characterized in that: the working voltage of the parallel plate capacitor consisting of the parallel capacitor upper plate (42) and the parallel capacitor lower plate (43) is 10-50 KV.
5. The hot air drying system and the use method thereof according to claim 4, characterized in that: the working voltage of the parallel plate capacitor consisting of the parallel capacitor upper plate (42) and the parallel capacitor lower plate (43) can be changed in stages according to the drying requirement, and can also be kept constant in the whole drying process.
6. The hot air drying system and the use method thereof according to claim 1, characterized in that: the controller (13) comprises a temperature sensor and a humidity sensor; the temperature sensor and the humidity sensor correspond to the drying chamber.
7. The hot air drying system and the use method thereof according to claim 1, characterized in that: and the controller (13) controls the air inlet (11) and the air outlet (12) to be automatically opened or closed.
8. Use of a hot air drying system according to any of claims 1-7 for controlling and regulating the drying effect of the drying chamber; the temperature set in the drying cavity is t, the humidity set in the drying cavity is rh, and the default working voltage of the parallel plate capacitor is v; the method is characterized by comprising the following steps:
(1) when the humidity in the drying cavity is higher than the set humidity rh, the controller (13) controls the air inlet (11) and the air outlet (12) to be kept in an opening state, and meanwhile, the working voltage of the parallel plate capacitor is adjusted to v1 until the humidity in the drying cavity reaches the set humidity rh;
(2) when the humidity in the drying cavity is lower than the set humidity rh, the controller (13) controls the air inlet (11) and the air outlet (12) to keep a closed state, and meanwhile, the working voltage of the parallel plate capacitor is adjusted to v2 until the humidity in the drying cavity reaches the set humidity rh;
(3) when the temperature in the drying cavity is higher than the set temperature t, the controller (13) closes the heating tube set (2) until the temperature in the drying cavity is lower than the set temperature t;
(4) when the temperature in the drying cavity is lower than the set temperature t, the controller (13) starts the heating tube set (2) until the temperature in the drying cavity is higher than the set temperature t.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110835251.1A CN113670015A (en) | 2021-07-23 | 2021-07-23 | Hot air drying system and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110835251.1A CN113670015A (en) | 2021-07-23 | 2021-07-23 | Hot air drying system and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113670015A true CN113670015A (en) | 2021-11-19 |
Family
ID=78539900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110835251.1A Pending CN113670015A (en) | 2021-07-23 | 2021-07-23 | Hot air drying system and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113670015A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720365Y (en) * | 2004-08-16 | 2005-08-24 | 车炳雷 | Electromagnetic-wave hot-wind moist-extraction drying machine |
| US20100236088A1 (en) * | 2007-08-10 | 2010-09-23 | Christopher Roy Paice | Timber treatment using radio frequency energy |
| CN202442988U (en) * | 2012-03-05 | 2012-09-19 | 湖南科技学院 | Online grain water-content measurement device |
| CN203595378U (en) * | 2013-10-12 | 2014-05-14 | 王兆进 | Radio-frequency dryer |
| CN103968646A (en) * | 2014-05-20 | 2014-08-06 | 南京财经大学 | Radio frequency and microwave drying method for preventing ultrahigh moisture grain from mildewing |
| CN104329910A (en) * | 2014-10-23 | 2015-02-04 | 河北华氏纪元高频设备有限公司 | High-frequency vacuum wood drying method and high-frequency vacuum wood drying equipment |
| CN207407616U (en) * | 2017-08-10 | 2018-05-25 | 新疆农业科学院农业机械化研究所 | Heated-air drying equipment |
| JP2019071230A (en) * | 2017-10-10 | 2019-05-09 | 山本ビニター株式会社 | Dielectric heating device |
| CN111322843A (en) * | 2020-02-19 | 2020-06-23 | 中国农业大学 | Multi-layer vacuum radio frequency-hot air combined drying method and equipment for rhizome traditional Chinese medicinal materials |
-
2021
- 2021-07-23 CN CN202110835251.1A patent/CN113670015A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720365Y (en) * | 2004-08-16 | 2005-08-24 | 车炳雷 | Electromagnetic-wave hot-wind moist-extraction drying machine |
| US20100236088A1 (en) * | 2007-08-10 | 2010-09-23 | Christopher Roy Paice | Timber treatment using radio frequency energy |
| CN202442988U (en) * | 2012-03-05 | 2012-09-19 | 湖南科技学院 | Online grain water-content measurement device |
| CN203595378U (en) * | 2013-10-12 | 2014-05-14 | 王兆进 | Radio-frequency dryer |
| CN103968646A (en) * | 2014-05-20 | 2014-08-06 | 南京财经大学 | Radio frequency and microwave drying method for preventing ultrahigh moisture grain from mildewing |
| CN104329910A (en) * | 2014-10-23 | 2015-02-04 | 河北华氏纪元高频设备有限公司 | High-frequency vacuum wood drying method and high-frequency vacuum wood drying equipment |
| CN207407616U (en) * | 2017-08-10 | 2018-05-25 | 新疆农业科学院农业机械化研究所 | Heated-air drying equipment |
| JP2019071230A (en) * | 2017-10-10 | 2019-05-09 | 山本ビニター株式会社 | Dielectric heating device |
| CN111322843A (en) * | 2020-02-19 | 2020-06-23 | 中国农业大学 | Multi-layer vacuum radio frequency-hot air combined drying method and equipment for rhizome traditional Chinese medicinal materials |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211119 |
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| RJ01 | Rejection of invention patent application after publication |