CN102059214A - Coating drying technology and device thereof - Google Patents
Coating drying technology and device thereof Download PDFInfo
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- CN102059214A CN102059214A CN201010574659XA CN201010574659A CN102059214A CN 102059214 A CN102059214 A CN 102059214A CN 201010574659X A CN201010574659X A CN 201010574659XA CN 201010574659 A CN201010574659 A CN 201010574659A CN 102059214 A CN102059214 A CN 102059214A
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Abstract
The invention discloses a coating drying technology and device thereof. The technology is used for drying a coating by combining a microwave drying technology with a circulating air-supply type drying technology, and a mode of heating the microwave dried coating from inside to outside is combined with a mode of drying the microwave dried coating with circulating air from outside to inside so that the purpose of more rapidly thoroughly drying the coating is achieved. The coating drying technology disclosed in the invention has the characteristics of uniform heating, high drying speed, high heat efficiency, good product quality and the like; and the circulating air can be used for immediately eliminating a solvent evaporated by the coating in a microwave heating process, thus the problems of local overheating caused by high microwave heating speed and incapability of immediately eliminating the solvent is avoided, the quality of the coating is ensured, and the thorough and uniform drying effect is obtained. The device has simple structure, can obtain better drying effect of the coating, and can improve the drying speed, thereby greatly saving the production period, improving the production efficiency and being capable of effectively avoiding microwave leakage.
Description
Technical field
The present invention relates to the coating material production system, the drying that relates in particular to coating material is handled, and is specifically related to a kind of coating dry technology and device thereof.
Background technology
Will toast drying to the hygrometric state coating after the production process of material coating now, drive away the solvent composition in the coating, obtain dry coating, the degree of drying of coating extremely influences the quality of coating.
The drying means of coating is a lot, and have far infrared radiation drying, the thermally conductive heat used at present rouse drying, the floating drying of two-sided air-supply, conventional convection current heated-air drying and circulating air impingement drying etc.
Wherein: the far infrared radiation drying efficiency is low, and uneven drying is even, is easy to generate dry disadvantage, so be not used widely; Dry its rate of drying of heat drum depends on heat drum temperature, and equipment is relatively heavier, is mainly used in the drying of paper and cloth, seldom uses on the coating drying; Floating dry unique two-sided tuyere design, the dry coating sheet material is the floating state drying under the air-flow effect, its drying efficiency height, in the drying of paper coating machine, obtained extensive use, but when coating material is the metal quality, coating can not be reached the effect of two-sided drying, can cause great energy waste, and cost is higher; Convective drying is more traditional dry technology, and equipment is simple, but drying efficiency is low, progressively can be substituted; The circulating air impingement drying is to use the comparatively drying mode of main flow present stage, existing coating machine generally adopts the electrical heating air-supply drying mode that circulates up and down, also belong to wherein a kind of, want high than the heated-air drying efficient of normal conventional, good energy-conserving effect, but circulation air-supply dry technology is because majority is electrical heating, when the temperature in the thermocouple heating lifting baking oven, temperature in the baking oven is difficult to evenly, and when coating entered baking oven, the coating surface temperature can raise rapidly, cause surperficial conjunctiva easily and the also moistening state of internal layer, can not reach the purpose of finish-drying, make coating film surface light inadequately, also even inadequately.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, provide that a kind of rate of drying is fast, drying effect good, and can realize the coating dry technology that coating is evenly dry.
Another object of the present invention is to provide a kind of device that utilizes above-mentioned coating dry technology to realize the coating drying.
Above-mentioned purpose of the present invention is achieved by following scheme:
At the existing problem of existing coating dry technology, the inventor has designed a large amount of testing programs, and finally found a kind of coating dry technology, this technology is when adopting microwave drying technology to the coating drying, also adopt circulation blast type dry technology that the solvent that microwave drying heating process floating coat is evaporated is in time got rid of, two kinds of dry technologies combine and jointly coating are carried out drying and handle.
In the above-mentioned coating dry technology, microwave drying technology and circulation blast type dry technology adopt prior art can realize the present invention.
In the above-mentioned coating dry technology, microwave drying technology is to adopt microwave launcher to the coating launched microwave, and its microwave power is 200～800W, and microwave frequency is 915～2450HZ.
In the above-mentioned coating dry technology, microwave drying technology also can comprise the microwave dispersal device, can distribute the microwave of microwave launcher emission more even on coating by this dispersal device.
In the above-mentioned coating dry technology, microwave drying technology also comprises microwave absorbing device, thereby can avoid the leakage of microwave.
In the above-mentioned coating dry technology, circulation blast type dry technology comprises air-supply arrangement and air exhausting device, air-supply arrangement is sent into hot dry wind to the dry coating of handling of microwave drying technology, hot dry wind can carry out from outside to inside oven dry to coating, and the hot dry wind that carries the coating solvent flashing is simultaneously siphoned away and discharges by air exhausting device.
In the above-mentioned coating dry technology, circulation blast type dry technology, the temperature of its hot dry wind is 25～150 ℃, the circulated air air output is 2000～10000M
3/ h, exhaust air rate are 3000～15000M
3/ h.
In the above-mentioned coating dry technology, also be provided with air cleaning unit on the air exhausting device, can handle or recovery etc. the gas of discharging.
Above-mentioned microwave launcher, microwave dispersal device, microwave absorbing device, air-supply arrangement and air exhausting device, used equipment when all adopting those skilled in the art to carry out that microwave drying treatment or circulation blast type are dry to be handled all can be realized the present invention.
In order to make above-mentioned coating dry technology obtain better effect, the inventor has also developed a kind of device that utilizes above-mentioned coating dry technology coating to be toasted dry processing.
A kind of coating drier, this device comprises microwave dryer, be provided with microwave launcher and circulation air-supply arrangement in this microwave dryer, described circulation air-intake device comprises air-supply arrangement and air exhausting device, and air-supply arrangement and air exhausting device are arranged on the both sides of microwave radiological unit.
Above-mentioned air-supply arrangement comprises air intake machine, blast pipe and air outlet, is communicated with by blast pipe between air outlet and the air intake machine, and the hot dry wind that the air intake machine blows out is sent in the microwave dryer by air outlet through blast pipe; Described air outlet is down funnel shaped tuyere by many and forms.
The said exhaust device comprises circulated air collection mouth, exhaust duct and exhaust blower, and circulated air is collected mouth and is down funnel shaped, and its top is connected with exhaust blower by exhaust duct.
Also be provided with baffle plate between above-mentioned air outlet and the coating, the hot dry wind that tuyere blows out is introduced into microwave dryer by baffle plate.
In the above-mentioned air-supply arrangement, also be provided with the air heat exchange machine on the air intake machine, the air heat exchange machine is used for the circulated air preheating and drying, thereby forms xeothermic circulated air, reaches coating efficient drying and the timely purpose of fully taking away the solvent that volatilizes.
In the said exhaust device, also be provided with gas treatment equipment on the exhaust blower, utilize this device to handle or recovery etc. the gas of getting rid of.
Also be provided with the microwave disperser on the above-mentioned microwave launcher, the microwave dryer inner surface is with the layer of metal net, and it is more even to make that the indoor microwave of microwave drying disperses, and also can not influence the effect of two-sided drying when coating material is the metal quality in addition.
In order to prevent microwave leakage, the inventor also improves above-mentioned microwave dryer, this microwave dryer is divided into dry section and microwave uptake zone, described microwave uptake zone is arranged on the two ends of dry section, separated by the microwave reflection plate between microwave uptake zone and the dry section, described dry section comprises microwave launcher and circulation air-supply arrangement.
Above-mentioned microwave uptake zone adopts " L " shape to import and export design, and its cross section of bending direction that " L " shape is imported and exported is towards the direction of dry section.
In the above-mentioned microwave dryer, the circulated air of former and later two microwave uptake zone inner surfaces, air-supply arrangement air outlet inboard, air exhausting device is collected mouthful inboard and " L " shape import and export, its base material all adopts metal material, and be coated with one deck microwave absorbing material, in the practical operation, according to the difference of coating material, the used frequency range difference of microwave drying is so the microwave absorbing material of corresponding coating is also different.
The concrete course of work of above-mentioned coating drier is;
The base material of coating is introduced into the microwave uptake zone of microwave dryer one end, then enter dry section through the microwave reflection plate, the microwave radiological unit starts, coating is carried out microwave drying treatment, simultaneously, the hot dry wind that the tuyere of air-supply arrangement blows out is introduced into the dry section of microwave dryer by baffle plate, the solvent that coating is evaporated is in time got rid of from the circulated air of air exhausting device is collected mouthful and is taken away, and, xeothermic circulated air is not influencing under thermograde and the conforming prerequisite of moist gradient direction, dry coating quickens dry from outside to inside; The coating process microwave reflection plate of process microwave drying treatment and the dry processing of circulation air-supply enters the microwave uptake zone of the microwave dryer other end, and enters subsequent handling by the outlet of microwave uptake zone.
When dry section toasts drying to coating, so collecting mouth, the air outlet of air-supply arrangement and the circulated air of air exhausting device all can prevent microwave leakage because of being coated with microwave absorbing material, simultaneously, if a small amount of microwave enters the microwave uptake zone, the microwave absorbing material that the inner surface of microwave uptake zone applies can effectively absorb microwave, decay and reflection, even microwave arrives the import and export of microwave uptake zone, " L " shape is imported and exported also can reflex to absorption chamber to microwave again, thereby guarantee that the nearly all microwave electric energy that is leaked to the microwave uptake zone from the microwave drying district can be reflected or absorb, and prevents microwave leakage.
Compared with prior art, the present invention has following beneficial effect:
1. coating dry technology of the present invention combines microwave drying technology and circulation air-supply dry technology, when using the microwave technology dry coating, utilize circulated air that solvent is in time got rid of, the mode that the coating of microwave drying is heated from inside to outside combines with the drying mode of circulated air ecto-entad simultaneously, reaches the coating purpose of finish-drying more fast;
2. coating dry technology of the present invention has homogeneous heating, rate of drying is fast, characteristics such as thermal efficiency height and good product quality, and owing to circulated air is in time got rid of the solvent that is evaporated in the microwave heating process, so also avoided because heating using microwave speed is fast, the phenomenon of the hot-spot that the untimely eliminating of solvent causes, thereby guaranteed the quality of coating material, obtained thoroughly evenly drying effect;
3. coating drier of the present invention, it is simple in structure, not only can obtain the good drying effect of coating, and can improve rate of drying, thereby save the production cycle greatly, enhances productivity;
4. coating drier of the present invention, it adopts before and after dry section two " L " shape microwave uptake zones is set, thereby can effectively avoid the leakage of microwave;
5. the tuyere of falling the funnel shaped of the present invention inclined-plane flaring, can reduce controlled wind speed and blast, reduce mechanical wear, it is more stable that the while baffle directs enters the circulation wind speed of microwave dryer, speed is less, has eliminated wind pressure pulsation, and coating all is consistent on length and width, elimination has guaranteed still to keep smooth unanimity behind the coating finish-drying to the influence of coating layer thickness.
Description of drawings
Fig. 1 is the structural representation of coating drier of the present invention.
The specific embodiment
For the ease of it will be appreciated by those skilled in the art that the present invention is explained in further detail below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, the coating drier of present embodiment comprises microwave dryer, this microwave dryer comprises former and later two microwave uptake zones 1 and a dry section 2, separate by microwave reflection plate 25 between microwave uptake zone 1 and the dry section 2, in dry section, be provided with microwave launcher 22 and circulation air-supply drying device.
Above-mentioned circulation air-intake device comprises air-supply arrangement and air exhausting device, and air-supply arrangement and air exhausting device are arranged on the both sides of microwave radiological unit 22.
Above-mentioned air-supply arrangement comprises air intake machine 211, blast pipe 212 and air outlet, is communicated with by blast pipe between air outlet and the air intake machine, and the hot dry wind that the air intake machine blows out is sent in the microwave dryer by air outlet through blast pipe; Described air outlet is down funnel shaped tuyere 213 by many and forms.
The said exhaust device comprises exhaust blower 231, exhaust duct 232 and circulated air collection mouth 233, and circulated air is collected mouth 233 and is down funnel shaped, and its top is connected with exhaust blower 231 by exhaust duct 232.
Also be provided with baffle plate 24 between above-mentioned air outlet and the coating, the hot dry wind that tuyere 213 blows out is introduced into the microwave drying district by baffle plate 24.
In the above-mentioned air-supply arrangement, also be provided with air heat exchange machine 214 on the air intake machine.
In the said exhaust device, also be provided with gas treatment equipment 234 on the exhaust blower, utilize this device to handle or recovery etc. the gas of getting rid of.
Above-mentioned microwave uptake zone 1 adopts " L " shape to import and export design, and its cross section of bending direction of " L " shape inlet device 261 and " L " shape outlet device 262 is towards the direction of dry section.
In the above-mentioned microwave dryer, tuyere 213 inboards of former and later two microwave uptake zone inner surfaces, air-supply arrangement, the circulated air of air exhausting device are collected mouthful 233 inboards, " L " shape inlet device 261 and " L " shape outlet device 262, its base material all adopts metal material, and be coated with one deck microwave absorbing material, in the practical operation, according to the difference of coating material, the used frequency range difference of microwave drying is so the microwave absorbing material of corresponding coating is also different.
The concrete course of work of above-mentioned coating drier is;
The base material 27 of coating is entered the microwave uptake zone 1 of microwave dryer one end earlier by " L " shape inlet device 261, then enter dry section 2 through microwave reflection plate 25, microwave radiological unit 22 starts, coating is carried out microwave drying treatment, simultaneously, the hot dry wind that the tuyere 213 of air-supply arrangement blows out is introduced into the dry section of microwave dryer by baffle plate 24, the solvent that coating is evaporated is in time collected to get rid of mouthfuls 233 from the circulated air of air exhausting device and is taken away, and, xeothermic circulated air is not influencing under thermograde and the conforming prerequisite of moist gradient direction, dry coating quickens dry from outside to inside; The coating process microwave reflection plate 25 of process microwave drying treatment and the dry processing of circulation air-supply enters the microwave uptake zone 1 of the microwave dryer other end, and enters subsequent handling by " L " shape outlet device 262 of microwave uptake zone.
When dry section toasts drying to coating, so collecting mouth, the air outlet of air-supply arrangement and the circulated air of air exhausting device all can prevent microwave leakage because of being coated with microwave absorbing material, simultaneously, if a small amount of microwave enters the microwave uptake zone, the microwave absorbing material that the inner surface of microwave uptake zone applies can effectively absorb microwave, decay and reflection, even microwave arrives the import and export of microwave uptake zone, " L " shape is imported and exported also can reflex to absorption chamber to microwave again, thereby guarantee that the nearly all microwave electric energy that is leaked to the microwave uptake zone from the microwave drying district can be reflected or absorb, and prevents microwave leakage.
The above embodiment has only expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.
Claims (10)
1. one kind is coated with dry technology, it is characterized in that this coating dry technology is when adopting microwave drying technology to the coating drying, also adopt circulation blast type dry technology that the solvent that microwave drying heating process floating coat is evaporated is in time got rid of, two kinds of dry technologies combine and jointly coating are carried out drying and handle.
2. according to the described a kind of coating dry technology of claim 1, it is characterized in that described microwave drying technology is to adopt microwave launcher to the coating launched microwave, its microwave power is 200～800W, and microwave frequency is 915～2450HZ.
3. according to claim 1 or 2 described a kind of coating dry technologies, it is characterized in that described microwave drying technology also comprises microwave dispersal device and microwave absorbing device.
4. according to the described a kind of coating dry technology of claim 1, it is characterized in that described circulation blast type dry technology comprises air-supply arrangement and air exhausting device, described air-supply arrangement is sent into hot dry wind to the dry coating of handling of microwave drying technology, and the hot dry wind that carries the coating solvent flashing is simultaneously siphoned away and discharges by air exhausting device.
5. according to the described a kind of coating dry technology of claim 4, the temperature that it is characterized in that described hot dry wind is 25～150 ℃, and the circulated air air output is 2000～10000M
3/ h, exhaust air rate are 3000～15000M
3/ h.
6. one kind is utilized the described coating dry technology of claim 1 to be coated with dry device, comprise microwave dryer, it is characterized in that being provided with in the described microwave dryer microwave launcher and circulation air-supply arrangement, described circulation air-intake device comprises air-supply arrangement and air exhausting device, and described air-supply arrangement and air exhausting device are arranged on the both sides of microwave radiological unit.
7. according to the described a kind of coating drier of claim 6, it is characterized in that described air-supply arrangement comprises air intake machine, blast pipe and air outlet, be communicated with by blast pipe between air outlet and the air intake machine, the hot dry wind that the air intake machine blows out is sent in the microwave dryer by air outlet through blast pipe; Described air exhausting device comprises circulated air collection mouth, exhaust duct and exhaust blower, and circulated air is collected mouth and is down funnel shaped, and its top is connected with exhaust blower by exhaust duct.
8. according to the described a kind of coating drier of claim 6, it is characterized in that described microwave dryer also is provided with the microwave uptake zone, described microwave uptake zone is arranged on the two ends of microwave launcher and circulation air-supply arrangement.
9. described according to Claim 8 a kind of coating drier is characterized in that described microwave uptake zone adopts " L " shape to import and export design, and its cross section of bending direction that " L " shape is imported and exported is towards the direction of dry section.
10. described according to Claim 8 a kind of coating drier, circulated air collection mouthful base materials inboard and that " L " shape is imported and exported that it is characterized in that described former and later two microwave uptake zone inner surfaces, air-supply arrangement air outlet inboard, air exhausting device all adopt metal material, and are coated with one deck microwave absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010574659XA CN102059214A (en) | 2010-12-06 | 2010-12-06 | Coating drying technology and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010574659XA CN102059214A (en) | 2010-12-06 | 2010-12-06 | Coating drying technology and device thereof |
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| CN102059214A true CN102059214A (en) | 2011-05-18 |
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|---|---|---|---|
| CN201010574659XA Pending CN102059214A (en) | 2010-12-06 | 2010-12-06 | Coating drying technology and device thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615030A (en) * | 2012-04-01 | 2012-08-01 | 昆明理工大学 | Microwave/hot air collaborative drying method of paste-like coating |
| CN103008203A (en) * | 2012-12-13 | 2013-04-03 | 京东方科技集团股份有限公司 | Film curing device |
| CN103522730A (en) * | 2013-09-22 | 2014-01-22 | 浙江五洲实业有限公司 | Microwave heating oven for coating waterborne polyurethane synthetic leather and control method thereof |
| CN106000816A (en) * | 2016-07-01 | 2016-10-12 | 卓达新材料科技集团威海股份有限公司 | Process for water-based microwave drying wall panel |
| CN107321080A (en) * | 2017-07-28 | 2017-11-07 | 四川省新康意新材料科技有限公司 | Coating apparatus for drying based on air filtering system |
| CN111491742A (en) * | 2017-12-25 | 2020-08-04 | 三得利控股株式会社 | Preform coating apparatus |
| CN111905996A (en) * | 2020-08-31 | 2020-11-10 | 深圳市浩能科技有限公司 | Coating and drying method and coating and drying device |
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| WO1998053711A1 (en) * | 1997-05-28 | 1998-12-03 | Australian Rural Dehydration Enterprise Pty. Ltd. | Dehydration plant |
| CN201527160U (en) * | 2009-08-05 | 2010-07-14 | 张文华 | Heated-air circulation microwave belt dryer |
| CN101811115A (en) * | 2010-02-26 | 2010-08-25 | 深圳市浩能科技有限公司 | Baking oven device of matrix (copper foil or aluminum foil) suspension type coating machine |
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2010
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Patent Citations (4)
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| CN2150929Y (en) * | 1993-06-22 | 1993-12-29 | 董伟国 | Hot air drier for coating |
| WO1998053711A1 (en) * | 1997-05-28 | 1998-12-03 | Australian Rural Dehydration Enterprise Pty. Ltd. | Dehydration plant |
| CN201527160U (en) * | 2009-08-05 | 2010-07-14 | 张文华 | Heated-air circulation microwave belt dryer |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615030A (en) * | 2012-04-01 | 2012-08-01 | 昆明理工大学 | Microwave/hot air collaborative drying method of paste-like coating |
| CN102615030B (en) * | 2012-04-01 | 2014-09-03 | 昆明理工大学 | Microwave/hot air collaborative drying method of paste-like coating |
| CN103008203A (en) * | 2012-12-13 | 2013-04-03 | 京东方科技集团股份有限公司 | Film curing device |
| CN103008203B (en) * | 2012-12-13 | 2015-07-15 | 京东方科技集团股份有限公司 | Film curing device |
| CN103522730A (en) * | 2013-09-22 | 2014-01-22 | 浙江五洲实业有限公司 | Microwave heating oven for coating waterborne polyurethane synthetic leather and control method thereof |
| CN106000816A (en) * | 2016-07-01 | 2016-10-12 | 卓达新材料科技集团威海股份有限公司 | Process for water-based microwave drying wall panel |
| CN107321080A (en) * | 2017-07-28 | 2017-11-07 | 四川省新康意新材料科技有限公司 | Coating apparatus for drying based on air filtering system |
| CN111491742A (en) * | 2017-12-25 | 2020-08-04 | 三得利控股株式会社 | Preform coating apparatus |
| CN111491742B (en) * | 2017-12-25 | 2022-07-08 | 三得利控股株式会社 | Preform coating apparatus |
| CN111905996A (en) * | 2020-08-31 | 2020-11-10 | 深圳市浩能科技有限公司 | Coating and drying method and coating and drying device |
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Application publication date: 20110518 |