CN111076522B - Three-phase balance high-efficiency temperature-equalizing hot air tunnel furnace drying device - Google Patents
Three-phase balance high-efficiency temperature-equalizing hot air tunnel furnace drying device Download PDFInfo
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- CN111076522B CN111076522B CN201811222974.9A CN201811222974A CN111076522B CN 111076522 B CN111076522 B CN 111076522B CN 201811222974 A CN201811222974 A CN 201811222974A CN 111076522 B CN111076522 B CN 111076522B
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- 238000001035 drying Methods 0.000 title claims abstract description 74
- 230000017525 heat dissipation Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 82
- 238000004321 preservation Methods 0.000 claims description 37
- 230000005855 radiation Effects 0.000 claims description 11
- 239000000523 sample Substances 0.000 claims description 9
- 238000004064 recycling Methods 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 abstract description 8
- 238000000643 oven drying Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000007791 dehumidification Methods 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
- F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
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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
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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
- F26B21/004—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
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
- F26B23/06—Heating arrangements using electric heating resistance heating
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a three-phase balanced high-efficiency uniform-temperature hot air tunnel furnace drying device which can bake printed cloth and comprises a drying line, a conveyor belt, a transmission motor, a control panel and a workpiece heat dissipation device, wherein the drying line is of a modularized structure formed by splicing and combining a plurality of drying modules; the drying module comprises a standard drying module and a dehumidifying and heat recovering drying module with dehumidifying and heat recovering functions.
Description
Technical Field
The invention relates to the technical field of hot air tunnel furnace drying equipment, in particular to a three-phase balanced high-efficiency uniform-temperature hot air tunnel furnace drying device.
Background
At present, the heating modes of the existing hot air tunnel furnace baking lines in the market include the following modes: 1) Heating a hot air tunnel furnace drying line by a far infrared heater: the heat energy is mainly transmitted in a radiation mode at high temperature, and researches show that at high temperature, 90% of the heat energy is transmitted in a radiation mode, the radiation intensity is proportional to the fourth power of the temperature, the absorption capacity of the radiation heat energy is proportional to the surface blackness of a heated object, and if the drying line is used for drying white cloth, the heat energy utilization efficiency is low, and the white cloth is easy to bake to yellow. In addition, the interval between the heaters in the furnace is large, the temperature measuring point has a larger phase difference from the actual temperature, and the three-phase unbalance of an input power supply is easily caused in the working process. Moreover, the high-temperature wet gas in the air conditioner is not discharged, so that the drying efficiency is low; 2) Heating a hot air tunnel furnace drying line through a pure resistance stainless steel heating pipe: the inside mainly adopts the tubular heating element of bundling, and the interval is big between the stove inner heating pipe, and temperature is inhomogeneous on the conveyer belt, and the temperature measurement point differs greatly with actual temperature, and the course of working easily causes input power's three-phase unbalance. Moreover, the internal high-temperature wet gas is not discharged, and the drying efficiency is not high; 3) Heating a hot air tunnel furnace drying line in an induction heating mode: the induction heating mode is adopted for heating, so that the efficiency is low, the temperature control is inaccurate, and the manufacturing cost is high; 4) The hot air tunnel furnace drying line is heated by a gas heating mode: inaccurate temperature control, pollution to the environment in the combustion process and inapplicability to cloth baking; 5) The hot air tunnel furnace drying line is heated by a fuel oil mode: inaccurate temperature control, pollution to the environment in the combustion process, and inapplicability to baking cloth in the printing industry.
Therefore, how to realize a simple, novel and reasonable structure, low production cost, high drying efficiency, high heat energy utilization rate, energy conservation and environmental protection, and the temperature-uniformizing and accurate temperature-controlling hot air tunnel furnace drying device is a technical problem to be solved in the industry.
Disclosure of Invention
The invention mainly aims to provide a three-phase balanced high-efficiency uniform-temperature hot air tunnel furnace drying device, which aims to realize a freely combined modular structure, has high flexibility, wide application range, convenient transportation and installation, simple, novel and reasonable structure, low production cost, high drying efficiency, high heat energy utilization rate, energy conservation, environment friendliness, three-phase balance, uniform temperature and accurate temperature control.
The invention provides a three-phase balanced high-efficiency uniform-temperature hot air tunnel furnace drying device which can bake printed cloth and comprises a drying line, a conveyor belt, a transmission motor, a control panel and a workpiece heat dissipation device, wherein the drying line is of a modularized structure formed by splicing and combining a plurality of drying modules; the drying module comprises a standard drying module and a dehumidifying and heat recovering drying module with dehumidifying and heat recovering functions.
Preferably, the standard drying module comprises a shell, a foot cup and a caster which are arranged at the bottom of the shell, and heat preservation cotton which is arranged on the inner surface of the shell and forms a heat preservation chamber, wherein a conveying belt is arranged in the heat preservation chamber, the standard drying module further comprises a plurality of plane heating plate devices which are arranged above the conveying belt and can uniformly heat workpieces on the conveying belt, a forced convection fan which is arranged at the bottom of the heat preservation chamber and can force air convection inside the heat preservation chamber, and a three-phase balance precise temperature control device which is arranged below the heat preservation chamber and can control the work of the plane heating plate devices.
Preferably, the dehumidifying and heat recovering and drying module comprises a shell, a foot cup and a caster wheel which are arranged at the bottom of the shell, and heat preservation cotton which is arranged on the inner surface of the shell and forms a heat preservation chamber, wherein a conveyor belt is arranged in the heat preservation chamber, and the standard drying module also comprises a plurality of planar heating plate devices which are arranged above the conveyor belt and can uniformly heat workpieces on the conveyor belt, a dehumidifying and heat recovering device which is arranged at the bottom of the heat preservation chamber, and a three-phase balance precise temperature control device which is arranged below the heat preservation chamber and can control the work of the planar heating plate devices; the wet-removing and heat-recovering device is provided with a forced convection fan, an air inlet pipe, a plate heat exchanger communicated with the air inlet pipe and an air outlet pipe communicated with the plate heat exchanger, wherein the air inlet pipe is parallelly communicated to a total air inlet pipe, hot air is introduced from a workpiece heat-dissipating device by the total air inlet pipe, and the air outlet pipe is parallelly communicated to the total air outlet pipe and is discharged through the total air outlet pipe; when the heat-insulating device is in operation, hot air at the heat-radiating device of the air inlet pipe is introduced into the heat-insulating chamber after being secondarily heated by the plate heat exchanger, high-temperature and high-humidity air after the heat-insulating chamber heats a workpiece is blown through the plate heat exchanger under the action of the forced convection fan, the plate heat exchanger cools the high-temperature and high-humidity air into normal-temperature and high-humidity air after heat exchange, and meanwhile, heat is recycled, the normal-temperature and high-humidity air is discharged through the air outlet pipe and the total air outlet pipe, the forced convection fan enables the heat-insulating chamber to form an independent forced convection system, so that the workpiece is uniformly heated in three modes of conduction, radiation and forced convection, and moisture is discharged through the moisture discharging and heat recycling device, and the heat is recycled so that the functions of moisture discharging and heat recycling are achieved.
Preferably, the planar heating plate device comprises a heating plate top plate, an upper insulating plate, a heating chip layer, a lower insulating plate and a heating plate bottom plate, wherein the heating plate top plate, the upper insulating plate, the heating chip layer, the lower insulating plate and the lower end face are sequentially attached from top to bottom, and blackening treatment is carried out on the lower end face so as to increase blackness, thereby increasing heat radiation and improving heat efficiency; the heating chips of the heating chip layer are uniformly distributed, and the shape and the size of the heating chip layer are matched with the top plate and the bottom plate of the heating plate; the upper end face of the top plate of the heating plate is provided with a ceramic base of an outgoing line, a temperature control probe capable of detecting temperature and a temperature controller capable of controlling the heating temperature of the heating chip layer, detection data of the temperature control probe of each planar heating plate device are transmitted to a three-phase balance precise temperature control device, and the three-phase balance precise temperature control device independently controls the operation of the corresponding temperature controller according to the detection data and the set temperature point so as to control the heating temperature of the corresponding heating chip layer and further achieve the effect of precise temperature control; the input power of the planar heating plate device is a direct current power rectified by three phases so as to ensure the three-phase balance of the input power during working and accurately control the temperature.
Preferably, the three-phase balance precise temperature control device, the temperature control probe and the temperature controller form a three-phase balance precise temperature control system capable of controlling the work of the plane heating plate device.
Preferably, the control panel comprises a shell, a control circuit board arranged in the shell, a display screen arranged on the shell and a plurality of control buttons arranged on the shell.
The invention realizes a freely combined modular structure, has high flexibility, wide application range, convenient transportation and installation, simple, novel and reasonable structure, low production cost, high drying efficiency, high heat energy utilization rate, energy conservation, environmental protection, three-phase balance, uniform temperature and accurate temperature control.
Drawings
FIG. 1 is a schematic diagram of a three-phase balancing high-efficiency temperature-equalizing hot air tunnel oven drying device according to one embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is a schematic diagram showing a second three-dimensional structure of an embodiment of a three-phase balanced efficient temperature-equalizing hot air tunnel oven drying device according to the present invention;
FIG. 5 is a schematic perspective view of a standard drying module in an embodiment of a three-phase balanced efficient temperature-equalizing hot air tunnel oven drying device according to the present invention;
FIG. 6 is a schematic cross-sectional view of a standard drying module in an embodiment of a three-phase balanced efficient temperature-equalizing hot air tunnel oven drying device according to the present invention;
FIG. 7 is a schematic diagram showing a three-dimensional structure of a drying module for dehumidification and heat recovery in an embodiment of a three-phase balanced high-efficiency uniform-temperature hot air tunnel furnace drying device according to the present invention;
FIG. 8 is a schematic cross-sectional view of a drying module for dehumidification and heat recovery in an embodiment of a three-phase balanced high-efficiency uniform temperature hot air tunnel oven drying device according to the present invention;
FIG. 9 is a schematic diagram of a cross-sectional structure of a drying module for dehumidification and heat recovery in an embodiment of a three-phase balanced high-efficiency uniform-temperature hot air tunnel furnace drying device according to the present invention;
FIG. 10 is a block diagram illustrating the operation of a dehumidification and heat recovery drying module in an embodiment of a three-phase balanced high-efficiency uniform temperature hot air tunnel oven drying apparatus according to the present invention;
FIG. 11 is a schematic exploded view of a three-phase balanced, high-efficiency, uniform-temperature hot air tunnel oven drying device according to an embodiment of the present invention;
fig. 12 is a schematic diagram of an electronic circuit structure of a planar heating plate device in an embodiment of a three-phase balanced efficient temperature-equalizing hot air tunnel oven drying device according to the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 12, an embodiment of a three-phase balanced high-efficiency uniform-temperature hot air tunnel furnace drying device is provided, which can bake printed cloth and comprises a drying line with a modularized structure formed by splicing and combining a plurality of drying modules 101, a conveyor belt 102 which penetrates through the whole drying line and can convey workpieces, a transmission motor 103 which drives the conveyor belt 102 to work, a control panel 104 which can control the operation of the hot air tunnel furnace drying device, and a workpiece heat dissipation device 105 which is arranged at the tail end of the conveyor belt 102 and can blow the workpieces to play a role in heat dissipation; the drying module 101 includes a standard drying module, a dehumidifying and heat recovering drying module with dehumidifying and heat recovering functions, and different drying modules 101 can be selected to be combined according to requirements. The hot air tunnel furnace drying device is of a modularized structure formed by splicing and combining a plurality of drying modules 101, can be freely combined as required, has high flexibility, wide application range, convenient transportation and installation, simple and novel and reasonable structure and low production cost.
The standard drying module comprises a shell 201, a foot cup 202 and a caster 203 which are arranged at the bottom of the shell 201, and heat preservation cotton 204 which is arranged on the inner surface of the shell 201 and forms a heat preservation chamber, wherein the conveyor belt 102 is arranged in the heat preservation chamber, the standard drying module further comprises a plurality of plane heating plate devices 205 which are arranged above the conveyor belt 102 and can uniformly heat workpieces on the conveyor belt 102, a forced convection fan 206 which is arranged at the bottom of the heat preservation chamber and can force air convection in the heat preservation chamber, and a three-phase balance precise temperature control device 207 which is arranged below the heat preservation chamber and can control the work of the plane heating plate devices 205.
The standard drying module comprises a shell 201, a foot cup 202 and a caster 203 which are arranged at the bottom of the shell 201, heat preservation cotton 204 which is arranged on the inner surface of the shell 201 and forms a heat preservation chamber, a plurality of planar heating plate devices 205 which are arranged above the conveyor belt 102 and can uniformly heat workpieces on the conveyor belt 102, a dehumidifying and heat recycling device which is arranged at the bottom of the heat preservation chamber, and a three-phase balance precise temperature control device 207 which is arranged below the heat preservation chamber and can control the work of the planar heating plate devices 205. The wet and heat removing and recovering device is provided with a forced convection fan 206, an air inlet pipe 208, a plate heat exchanger 209 communicated with the air inlet pipe 208, and an air outlet pipe 210 communicated with the plate heat exchanger 209, wherein the air inlet pipe 208 is parallelly communicated with a total air inlet pipe 211, the total air inlet pipe 211 is used for introducing hot air from the workpiece radiating device 105, and the air outlet pipe 210 is parallelly communicated with a total air outlet pipe 212 and is discharged through the total air outlet pipe 212. During operation, the air inlet pipe 208 introduces hot air at the part of the heat dissipating device, the hot air enters the heat preservation chamber after being secondarily heated by the plate heat exchanger 209, high-temperature and high-humidity air after the heat preservation chamber heats the workpiece is blown through the plate heat exchanger 209 under the action of the forced convection fan 206, the plate heat exchanger 209 cools the high-temperature and high-humidity air into normal-temperature and high-humidity air after heat exchange, and meanwhile, heat is recycled, the normal-temperature and high-humidity air is discharged through the air outlet pipe 210 and the total air outlet pipe 212, the forced convection fan 206 enables the heat preservation chamber to form an independent forced convection system, so that the workpiece is uniformly heated in three modes of conduction, radiation and forced convection, and moisture is discharged through the moisture discharging and heat recycling device, and the heat is recycled so as to achieve the moisture discharging and heat recycling functions. If the dehumidifying and heat recovering and drying module is selected according to the requirement, the energy-saving effect can be achieved, and the production efficiency can be effectively improved.
The flat heating plate device 205 includes a heating plate top plate 301, an upper insulating plate 302, a heating chip layer 303, a lower insulating plate 304, and a heating plate bottom plate 305 which are sequentially attached from top to bottom and are blackened on the lower end face to increase blackness, thereby increasing heat radiation and improving heat efficiency. The heating chips of the heating chip layer 303 are uniformly distributed, and the shape and the size of the heating chip layer 303 are matched with the heating plate top plate 301 and the heating plate bottom plate 305, so that the heating temperature of the heating chips on the whole heating plate top plate 301 and the heating plate bottom plate 305 is uniform. The upper end surface of the heating plate top plate 301 is provided with an outgoing line ceramic seat 306, a temperature control probe 307 capable of detecting temperature and a temperature controller 308 capable of controlling the heating temperature of the heating chip layer 303, detection data of the temperature control probe 307 of each planar heating plate device 205 are transmitted to the three-phase balance precise temperature control device 207, and the three-phase balance precise temperature control device 207 independently controls the operation of the corresponding temperature controller 308 according to the detection data and the set temperature point so as to control the heating temperature of the corresponding heating chip layer 303 and further achieve the effect of precise temperature control; the plane heating plate device 205 is adopted to heat the whole top of the conveyor belt 102, and the three-phase balance precise temperature control device 207 is combined to control the temperature, so that the internal temperature of a drying line can be precisely within +/-2 ℃, and the effect of drying white cloth in the printing industry is particularly obvious. The input power to the planar heating plate device 205 is a dc power rectified by three phases to ensure three-phase balance of the input power during operation and to control the temperature accurately.
The three-phase balance precise temperature control device 207, the temperature control probe 307 and the temperature controller 308 form a three-phase balance precise temperature control system capable of controlling the work of the plane heating plate device 205.
The control panel 104 includes a housing, a control circuit board disposed in the housing, a display screen disposed on the housing, and a plurality of control buttons disposed on the housing.
The invention realizes a freely combined modular structure, has high flexibility, wide application range, convenient transportation and installation, simple, novel and reasonable structure, low production cost, high drying efficiency, high heat energy utilization rate, energy conservation, environmental protection, three-phase balance, uniform temperature and accurate temperature control.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the present invention and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present invention.
Claims (3)
1. The three-phase balanced high-efficiency uniform-temperature hot air tunnel furnace drying device is characterized by comprising a drying line with a modularized structure formed by splicing and combining a plurality of drying modules, a conveyor belt capable of conveying workpieces, a transmission motor, a control panel and a workpiece heat dissipation device, wherein the transmission belt penetrates through the whole drying line, the transmission motor drives the conveyor belt to work, the control panel can control the operation of the hot air tunnel furnace drying device, and the workpiece heat dissipation device is arranged at the tail end of the conveyor belt and can blow the workpieces to play a role in heat dissipation; the drying module comprises a standard drying module and a dehumidifying and heat recovering drying module with dehumidifying and heat recovering functions;
The standard drying module comprises a shell, a foot cup and a caster wheel which are arranged at the bottom of the shell, heat preservation cotton which is arranged on the inner surface of the shell and forms a heat preservation chamber, a plurality of plane heating plate devices which are arranged above the conveyor and can uniformly heat workpieces on the conveyor, a forced convection fan which is arranged at the bottom of the heat preservation chamber and can force air convection in the heat preservation chamber, and a three-phase balance precise temperature control device which is arranged below the heat preservation chamber and can control the work of the plane heating plate devices, wherein when the three-phase balance precise temperature control device works, the forced convection fan enables the heat preservation chamber to form an independent forced convection system so as to uniformly heat the workpieces through three modes of conduction, radiation and forced convection;
The standard drying module comprises a shell, a foot cup and a caster which are arranged at the bottom of the shell, heat preservation cotton which is arranged on the inner surface of the shell and forms a heat preservation chamber, a plurality of planar heating plate devices which are arranged above the conveyor and can uniformly heat workpieces on the conveyor, a moisture removal and heat recovery device which is arranged at the bottom of the heat preservation chamber, and a three-phase balance precise temperature control device which is arranged below the heat preservation chamber and can control the work of the planar heating plate devices;
The wet-removing and heat-recovering device is provided with a forced convection fan, an air inlet pipe, a plate heat exchanger communicated with the air inlet pipe and an air outlet pipe communicated with the plate heat exchanger, wherein the air inlet pipe is parallelly communicated to a total air inlet pipe, hot air is introduced from a workpiece heat-dissipating device by the total air inlet pipe, and the air outlet pipe is parallelly communicated to the total air outlet pipe and is discharged through the total air outlet pipe; during operation, the air inlet pipe introduces hot air at the workpiece radiating device, the hot air enters the heat preservation chamber after being secondarily heated by the plate heat exchanger, high-temperature and high-humidity air after the workpiece is heated in the heat preservation chamber is blown through the plate heat exchanger under the action of the forced convection fan, the plate heat exchanger cools the high-temperature and high-humidity air into normal-temperature and high-humidity air after the heat exchange, and meanwhile, heat is recycled, the normal-temperature and high-humidity air is discharged through the air outlet pipe and the total air outlet pipe, the forced convection fan enables the heat preservation chamber to form an independent forced convection system so as to uniformly heat the workpiece in three modes of conduction, radiation and forced convection, and the moisture is discharged through the moisture discharging and heat recycling device and the heat is recycled so as to achieve the functions of moisture discharging and heat recycling;
The planar heating plate device comprises a heating plate top plate, an upper insulating plate, a heating chip layer, a lower insulating plate and a heating plate bottom plate, wherein the heating plate top plate, the upper insulating plate, the heating chip layer, the lower insulating plate and the lower end face are sequentially attached from top to bottom, and blackening treatment is carried out on the lower end face so as to increase blackness, thereby increasing heat radiation and improving heat efficiency;
The heating chips of the heating chip layer are uniformly distributed, and the shape and the size of the heating chip layer are matched with the top plate and the bottom plate of the heating plate;
The upper end face of the top plate of the heating plate is provided with a ceramic seat of an outgoing line, a temperature control probe capable of detecting temperature and a temperature controller capable of controlling the heating temperature of the heating chip layer, detection data of the temperature control probe of each planar heating plate device are transmitted to a three-phase balance precise temperature control device, and the three-phase balance precise temperature control device independently controls the operation of the corresponding temperature controller according to the detection data and the set temperature point so as to control the heating temperature of the corresponding heating chip layer and further achieve the effect of precise temperature control;
The input power of the planar heating plate device is a direct current power rectified by three phases so as to ensure the three-phase balance of the input power during working and accurately control the temperature.
2. The three-phase balance high-efficiency uniform-temperature hot air tunnel furnace drying device according to claim 1, wherein the three-phase balance precise temperature control device, the temperature control probe and the temperature controller form a three-phase balance precise temperature control system capable of controlling the work of the plane heating plate device.
3. The three-phase balance high-efficiency uniform-temperature hot air tunnel furnace drying device according to claim 2, wherein the control panel comprises a shell, a control circuit board arranged in the shell, a display screen arranged on the shell and a plurality of control buttons arranged on the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811222974.9A CN111076522B (en) | 2018-10-19 | 2018-10-19 | Three-phase balance high-efficiency temperature-equalizing hot air tunnel furnace drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811222974.9A CN111076522B (en) | 2018-10-19 | 2018-10-19 | Three-phase balance high-efficiency temperature-equalizing hot air tunnel furnace drying device |
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| Publication Number | Publication Date |
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| CN111076522A CN111076522A (en) | 2020-04-28 |
| CN111076522B true CN111076522B (en) | 2024-06-18 |
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| CN113154860A (en) * | 2021-04-26 | 2021-07-23 | 湖南农业大学 | Three-return-stroke cyclone type rape drying device |
| CN113203262B (en) * | 2021-04-27 | 2022-07-19 | 湖南农业大学 | Three-return-stroke cyclone-type intelligent rapeseed drying control system |
| CN113218174B (en) * | 2021-04-29 | 2022-08-19 | 温州市金榜轻工机械有限公司 | Portable modular belt dryer |
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