CN110906722A - Microwave and hot air combined glass fiber precursor dryer - Google Patents
Microwave and hot air combined glass fiber precursor dryer Download PDFInfo
- Publication number
- CN110906722A CN110906722A CN201911339872.XA CN201911339872A CN110906722A CN 110906722 A CN110906722 A CN 110906722A CN 201911339872 A CN201911339872 A CN 201911339872A CN 110906722 A CN110906722 A CN 110906722A
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- Prior art keywords
- microwave
- glass fiber
- hot air
- cavity
- dryer
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
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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
- 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
Abstract
The utility model provides a microwave and hot-blast glass fiber precursor drying-machine of uniting, cavity, hot air circulating system, hydrofuge system, yarn car delivery track, microwave generator and the wave guide in stove frame, the metal tunnel that is equipped with the heat preservation, microwave generator is connected with the wave guide, the wave guide passes the stove frame that is equipped with the heat preservation and extends to cavity in the metal tunnel, the part that the wave guide extends in the cavity in the metal tunnel is opened there is the gap antenna array of radiation microwave energy. The invention has the advantages of improving the drying efficiency, reducing the manufacturing cost, saving the energy consumption, improving the product quality and the like.
Description
Technical Field
The invention relates to glass fiber strand drying equipment, in particular to a microwave and hot air combined glass fiber strand dryer.
Background
In the process of drawing and forming the glass fiber strand, the nascent glass fiber strand needs to be in contact with a buncher, a strand oscillator and the like, and in order to lubricate and bundle and protect the glass fiber strand and endow the glass fiber strand with physical, mechanical, chemical, electrical, ageing-resistant and other application properties, a sizing agent needs to be coated. The impregnating compound is an aqueous solution or emulsion, and its composition contains organic silane coupling agent, film-forming agent of organic polymer, various assistants and 80% of water. The drawn glass fiber precursor contains 8-10% of glass fiber impregnating compound, and a glass fiber product serving as a glass fiber reinforced material has low water content which is less than 0.15% generally and less than 0.1% in some cases in order to meet the requirements of product technology and product performance. In order to endow the glass fiber with certain characteristics, a certain proportion of organic solid content is required, so a strand drying process is required in the production process of the glass fiber.
The drying process of the glass fiber precursor is the process of heating → gasifying → transferring → gasifying, factors influencing the drying speed of the glass fiber precursor comprise the drying temperature, the flow speed of a heat transfer medium, the relative humidity in the drying space, the thickness of the precursor and the arrangement position of the precursor in a drying room, and the like, and the moisture content and the uniform consistency of the moisture content after the glass fiber precursor is dried are related to the drying mode, the drying process, the structure of the drying room and the like.
At present, the drying of glass fiber strands is mostly carried out by adopting an intermittent or tunnel (continuous) hot air drying furnace, hot air is used as a heat transfer medium, and the adopted drying energy sources comprise electricity, steam, natural gas and urban coal gas. The glass fiber precursor is heated by taking hot air as a heat transfer medium, so that the glass fiber precursor is dehumidified and dewatered, and organic components are solidified to form a film on the surface of the glass fiber. This is a heat conduction heating mode from outside to inside.
The microwave heating is different from a common heat conduction heating mode, directly acts on an object, selectively heats, and has the characteristics of high temperature rise speed, uniform heating and the like; the combination of microwave and hot air can shorten the drying time and improve the product quality.
CN201772698U, 03.23.2011, discloses a microwave and hot air mixed glass fiber dryer, which comprises a furnace body, a drying cavity arranged in the furnace body, a hot air circulating system, a moisture discharging system, a microwave generating source and a creel conveying track arranged at the bottom of the drying cavity; the microwave generating source is connected with microwave energy feeding ports arranged in the oven body through microwave waveguides, and each microwave waveguide is connected with two or more microwave energy feeding ports. It has the following disadvantages: the microwave energy feedback port is an independent part, the manufacturing precision and the manufacturing cost are high, and the radiation microwave energy is not uniform; if the positions and the number of the energy feedback ports are not designed reasonably, the energy feedback conversion efficiency is low, the standing wave ratio is large, the reflection power is high, the service life of a microwave generator is seriously influenced, and meanwhile, the microwave energy acting on materials is insufficient due to the fact that the energy is reflected back to the generator, and the drying efficiency is influenced.
In addition, the magnetron and the power supply of the microwave generation source in CN201772698U are installed on the equipment in a dispersed independent mode, the magnetron and the power supply are connected by adopting a high-voltage wire and a terminal, and equipment maintenance personnel are very easy to touch high-voltage (4000V-7000V) parts in the overhauling process, so that serious potential safety hazards exist, the whole outer frame needs to be manufactured and isolated at the periphery, and the cost of manufacturing materials, installation labor and the like is high.
Disclosure of Invention
The invention aims to solve the technical problem of providing a microwave and hot air combined glass fiber strand dryer which can improve the drying efficiency and reduce the manufacturing cost aiming at the defects of the prior art.
The invention further aims to solve the technical problem of providing a microwave and hot air combined glass fiber strand dryer which can improve the drying efficiency, reduce the manufacturing cost, avoid the potential safety hazard of touching a high-voltage part in the installation or maintenance process and reduce the manufacturing material and installation labor cost.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a microwave and hot-blast glass fiber precursor drying-machine of uniting, cavity, hot air circulating system, hydrofuge system, yarn car delivery track, microwave generator and the wave guide in stove frame, the metal tunnel that is equipped with the heat preservation, microwave generator is connected with the wave guide, the wave guide passes the stove frame that is equipped with the heat preservation and extends to cavity in the metal tunnel, the part that the wave guide extends in the cavity in the metal tunnel is opened there is the gap antenna array of radiation microwave energy.
Further, the slot antenna array can be a longitudinal offset slot array, a transverse slot array or a central inclined slot array, and the like, and the specific position of each slot can be calculated by the slot antenna array through an HFSS simulation system.
Furthermore, the aperture size width of the aperture antenna array is 6-20mm, and the length of the aperture antenna array is 30-90 mm.
Furthermore, the microwave generator is an integrated design, a single magnetron, an excitation cavity and a microwave power supply are integrated in a metal shell, and the metal shell is effectively connected with a protective ground.
Further, a single magnetron of the microwave generator is designed to be air-cooled or water-cooled.
Further, a single microwave power supply of the microwave generator is designed in an air cooling, water cooling, oil immersion and water cooling mode or an oil immersion and air cooling mode.
Further, the microwave power supply is a digital variable frequency microwave power supply.
The invention has the beneficial effects that:
the slot antenna array for radiating microwave energy is arranged at the part of the waveguide tube extending to the inner cavity of the metal tunnel, so that the standing-wave ratio can be reduced, the drying efficiency is improved, the manufacturing cost is reduced, the energy consumption is saved, and the product quality is improved; furthermore, a magnetron, an excitation cavity and a power supply of the microwave generator are integrated in a shell, so that the potential safety hazard that equipment maintenance personnel touch a high-voltage wire terminal in the overhauling process can be avoided, and the manufacturing material and installation labor cost is reduced.
Drawings
FIG. 1 is a schematic structural view of a microwave and hot air combined glass fiber strand dryer according to the present invention;
FIG. 2 is a side view of the glass fiber strand dryer of FIG. 1;
FIG. 3 is a schematic perspective view of a microwave generator, a waveguide and a slot antenna array of the dryer shown in FIG. 1;
FIG. 4 is a schematic diagram of a microwave generator, waveguide and slot antenna array (longitudinally offset slot array);
FIG. 5 is a schematic diagram of a microwave generator, waveguide and slot antenna array (transverse slot array);
FIG. 6 is a schematic diagram of a microwave generator, waveguide and slot antenna array (central tilted slot array);
in the figure: 1. the device comprises a furnace frame, 2. a microwave generator, 3. a waveguide tube, 3-1. a slot antenna array, 4. a hot air circulating system, 5. an inner cavity of a metal tunnel, 6. a hot air circulating multi-wing fan, 7. a moisture discharging system, 8. glass fiber strands, 9. a yarn car, 10. a yarn car conveying rail and 11. a microwave energy leakage automatic lifting restraining door.
Detailed Description
The invention is further explained with reference to the drawings and the embodiments.
Examples
Referring to fig. 1-2, a microwave and hot air combined glass fiber precursor dryer comprises a furnace frame 1 provided with a heat insulation layer, a metal tunnel inner cavity 5, a hot air circulating system 4, a dehumidifying system 7, a yarn car conveying track 10, a microwave generator 2 and a waveguide tube 3, wherein the microwave generator 2 is connected with the waveguide tube 3, the waveguide tube 3 penetrates through the furnace frame 1 provided with the heat insulation layer and extends into the metal tunnel inner cavity 5, and a part of the waveguide tube 3 extending into the metal tunnel inner cavity 5 is provided with a slot antenna array 3-1 for radiating microwave energy.
The slot antenna array 3-1 is a longitudinally offset slot array, as shown in fig. 3 and 4. Of course, it can be designed as a transverse slot array, as shown in FIG. 5, or as a central oblique slot, as shown in FIG. 6. The slot antenna array 3-1 may calculate the specific position of each slot by means of an HFSS simulation system. The aperture size width of the aperture antenna array is 10mm, and the length is 60 mm.
The microwave generator 2 is an integrated design, a single magnetron, an excitation cavity and a microwave power supply are integrated in a metal shell, and the metal shell is effectively connected with a protective ground.
The micro magnetron is designed by air cooling or water cooling, and the microwave power supply is designed by air cooling, water cooling, oil immersion and water cooling, or oil immersion and air cooling.
The microwave is a digital variable frequency microwave power supply, the magnetron is driven by the digital variable frequency microwave power supply to emit the microwave, the microwave power is adjustable, the applicability is stronger, and the power can be automatically adjusted according to the temperature through the PID control of the PLC, so that the intelligent control is realized.
And an inlet and an outlet of the oven frame 1 are provided with microwave energy leakage automatic lifting restraining doors 11.
When the device works, the microwave energy leakage automatic lifting restraining door 11 is opened, the yarn car 9 with the glass fiber strands 8 enters the inner cavity 5 of the metal tunnel along the yarn car conveying track 10, and then the microwave energy leakage automatic lifting restraining door 11 is closed; starting a hot air circulation multi-wing fan 6, sending hot air into the inner cavity 5 of the metal tunnel through a hot air circulation air duct and the porous metal plate, and discharging damp air in the inner cavity 5 of the metal tunnel by a damp discharge system 7 arranged in the inner cavity 5 of the metal tunnel; after the microwave energy leakage automatic lifting restraining door 11 is closed, the microwave generator 2 is started, and the microwaves are transmitted into the inner cavity 5 of the metal tunnel through the waveguide 3 by the slot antenna array 3-1. And after the drying period is over, the microwave generator 2 is closed, and the microwave energy leakage automatic lifting restraining door 11 is opened, so that the yarn car 9 is conveyed to the outside along the yarn car conveying track 10.
The invention has the technical characteristics that:
(1) the microwave and hot air combined drying is more uniform, and the efficiency is higher. The glass fiber precursor can be uniformly heated by the arrangement of the slot antenna array and the hot air, so that the heating time is shortened, the drying efficiency is improved, the energy consumption is saved, and the product quality is improved.
(2) The design of microwave shielding can ensure that microwave leakage reaches national safety regulations and meets industrial use requirements.
The above description is only one embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by the design concept should fall within the scope of the present invention.
Claims (7)
1. The utility model provides a microwave and hot-blast glass fiber precursor drying-machine of uniting, cavity, hot air circulating system, hydrofuge system, yarn car delivery track, microwave generator and the wave guide in the furnace frame, the metal tunnel that are equipped with the heat preservation, microwave generator is connected with the wave guide, the wave guide passes the furnace frame that is equipped with the heat preservation and extends to cavity in the metal tunnel, its characterized in that: and a part of the waveguide tube extending to the inner cavity of the metal tunnel is provided with a slot antenna array for radiating microwave energy.
2. The microwave and hot air combined glass fiber strand dryer of claim 1, wherein: the slot antenna array is a longitudinal offset slot array, a transverse slot array or a central inclined slot array.
3. The microwave and hot air combined glass fiber strand dryer of claim 1 or 2, wherein: the aperture size width of the aperture antenna array is 6-20mm, and the length is 30-90 mm.
4. The microwave and hot air combined glass fiber strand dryer of claim 1 or 2, wherein: the microwave generator is an integrated design, a single magnetron, an excitation cavity and a microwave power supply are integrated in a metal shell, and the metal shell is effectively connected with a protective ground.
5. The microwave and hot air combined glass fiber strand dryer of claim 4, wherein: and a single magnetron of the microwave generator is designed in an air cooling or water cooling mode.
6. The microwave and hot air combined glass fiber strand dryer of claim 4, wherein: and a single microwave power supply of the microwave generator is designed in an air cooling, water cooling, oil immersion and water cooling or oil immersion and air cooling mode.
7. The microwave and hot air combined glass fiber strand dryer of claim 4, wherein: the microwave power supply is a digital variable frequency microwave power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911339872.XA CN110906722A (en) | 2019-12-23 | 2019-12-23 | Microwave and hot air combined glass fiber precursor dryer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911339872.XA CN110906722A (en) | 2019-12-23 | 2019-12-23 | Microwave and hot air combined glass fiber precursor dryer |
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| CN110906722A true CN110906722A (en) | 2020-03-24 |
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| CN201911339872.XA Pending CN110906722A (en) | 2019-12-23 | 2019-12-23 | Microwave and hot air combined glass fiber precursor dryer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112495726A (en) * | 2020-12-16 | 2021-03-16 | 杭州富阳联发消失模成型设备有限公司 | Expandable resin raw material model and drying equipment and method for model after coating hanging |
| CN113405322A (en) * | 2021-06-23 | 2021-09-17 | 中国核动力研究设计院 | Drying device in radioactive waste liquid drying barrel and waste liquid drying barrel comprising same |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2682848A1 (en) * | 1991-10-16 | 1993-04-23 | De Maillard Etienne | METHOD AND DEVICE FOR APPLYING MICROWAVES TO PRODUCTS, ESPECIALLY FOR DEFROSTING, HEATING, DRYING |
| CN101557040A (en) * | 2009-05-22 | 2009-10-14 | 中国电子科技集团公司第三十八研究所 | Frequency-selective broadband waveguide slot antenna array |
| CN101814661A (en) * | 2009-11-20 | 2010-08-25 | 天津工程师范学院 | Trapezoidal waveguide slot array antenna unit |
| CN201772698U (en) * | 2010-01-26 | 2011-03-23 | 吕进凯 | Microwave hot-blast air mixed glass fiber drying machine |
| JP2013076560A (en) * | 2011-09-15 | 2013-04-25 | Nippon Steel & Sumitomo Metal Corp | Microwave dryer and microwave drying method |
| CN107634342A (en) * | 2017-08-29 | 2018-01-26 | 大连港森立达木材交易中心有限公司 | A kind of two-way Uniform Irradiation antenna-feedback system |
| CN107994323A (en) * | 2017-11-27 | 2018-05-04 | 上海航天测控通信研究所 | A kind of method and its device for designing slotted waveguide antenna |
| CN110287539A (en) * | 2019-05-29 | 2019-09-27 | 西安电子科技大学 | A kind of Waveguide slot array antenna Automated Design and optimization method |
| CN110337155A (en) * | 2019-07-03 | 2019-10-15 | 王学田 | Wave guide slot array antenna is used in a kind of drying of base fabric |
| CN211261624U (en) * | 2019-12-23 | 2020-08-14 | 湖南微朗科技有限公司 | Microwave and hot air combined glass fiber precursor dryer |
-
2019
- 2019-12-23 CN CN201911339872.XA patent/CN110906722A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2682848A1 (en) * | 1991-10-16 | 1993-04-23 | De Maillard Etienne | METHOD AND DEVICE FOR APPLYING MICROWAVES TO PRODUCTS, ESPECIALLY FOR DEFROSTING, HEATING, DRYING |
| CN101557040A (en) * | 2009-05-22 | 2009-10-14 | 中国电子科技集团公司第三十八研究所 | Frequency-selective broadband waveguide slot antenna array |
| CN101814661A (en) * | 2009-11-20 | 2010-08-25 | 天津工程师范学院 | Trapezoidal waveguide slot array antenna unit |
| CN201772698U (en) * | 2010-01-26 | 2011-03-23 | 吕进凯 | Microwave hot-blast air mixed glass fiber drying machine |
| JP2013076560A (en) * | 2011-09-15 | 2013-04-25 | Nippon Steel & Sumitomo Metal Corp | Microwave dryer and microwave drying method |
| CN107634342A (en) * | 2017-08-29 | 2018-01-26 | 大连港森立达木材交易中心有限公司 | A kind of two-way Uniform Irradiation antenna-feedback system |
| CN107994323A (en) * | 2017-11-27 | 2018-05-04 | 上海航天测控通信研究所 | A kind of method and its device for designing slotted waveguide antenna |
| CN110287539A (en) * | 2019-05-29 | 2019-09-27 | 西安电子科技大学 | A kind of Waveguide slot array antenna Automated Design and optimization method |
| CN110337155A (en) * | 2019-07-03 | 2019-10-15 | 王学田 | Wave guide slot array antenna is used in a kind of drying of base fabric |
| CN211261624U (en) * | 2019-12-23 | 2020-08-14 | 湖南微朗科技有限公司 | Microwave and hot air combined glass fiber precursor dryer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112495726A (en) * | 2020-12-16 | 2021-03-16 | 杭州富阳联发消失模成型设备有限公司 | Expandable resin raw material model and drying equipment and method for model after coating hanging |
| CN112495726B (en) * | 2020-12-16 | 2024-03-19 | 杭州富阳联发消失模成型设备有限公司 | Expandable resin raw material model and drying equipment and method after coating on model |
| CN113405322A (en) * | 2021-06-23 | 2021-09-17 | 中国核动力研究设计院 | Drying device in radioactive waste liquid drying barrel and waste liquid drying barrel comprising same |
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