CN103791701B - A kind of free stuff quick drying kiln and drying means thereof - Google Patents
A kind of free stuff quick drying kiln and drying means thereof Download PDFInfo
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- CN103791701B CN103791701B CN201210428035.6A CN201210428035A CN103791701B CN 103791701 B CN103791701 B CN 103791701B CN 201210428035 A CN201210428035 A CN 201210428035A CN 103791701 B CN103791701 B CN 103791701B
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Abstract
The present invention relates to Wood Drying Technology field, it is specifically related to a kind of free stuff quick drying kiln and drying means thereof, described free stuff quick drying kiln includes kiln body, blower fan and heater are set in described kiln body, described kiln body top arranges moistureproof window, described kiln body top arranges explosion proof window, arranges evaporation tank in described kiln body, and described blower fan is the blower fan of diameter 1.8 meters.Described drying means includes preheating, is dried and post-processing step, and preheating step keeps dry, wet bulb temperature is consistent, and drying steps uses thermograde heating, and post processing includes cooling and damping.Dry kiln of the present invention can increase the life-span of kiln body, reduces cost；Drying means rate of drying soon, not only ensure that the lumber quality in dry run, and but also can reduce wood surface hardenability, prevent wood color from deepening, improve dry mass.
Description
Technical field
The present invention relates to a kind of free stuff quick drying kiln and drying means thereof.
Background technology
Existing be dried the free stuffs such as softwood is all to use common conventional drying kiln, and arid cycle is long, and middle low temperature easily causes seasoning defect drying defects such as going mouldy, and drying effect is general, is easily generated drying of wood defect.
Summary of the invention
For solving the problem that prior art exists, the present invention provides that a kind of drying effect is good, service life of kiln body length, free stuff quick drying kiln easy for installation.
Another object of the present invention is to provide a kind of drying effect free stuff quickly drying method good, fireballing.
Free stuff quick drying kiln of the present invention, it includes kiln body, arranges blower fan and heater in described kiln body, described kiln body top arranges moistureproof window, described kiln body top arranges explosion proof window, arranges evaporation tank in described kiln body, and described blower fan is the blower fan of diameter 1.8 meters.
A kind of method with above-mentioned free stuff quick drying kiln rapid draing free stuff of the present invention, it comprises the steps:
Preheating: open spraying steam valve by control system, superheated steam or high-pressure water heating in external boiler become saturated vapor after evaporation tank and are ejected in kiln body, free stuff in kiln body is sprayed saturated vapor preheating, spraying steam equal to wet bulb temperature and stops spraying steam to dry-bulb temperature in kiln body more than 90 DEG C, keeps a period of time to preheat after having sprayed；
It is dried: open heater, control system is according to the heating-up temperature pre-set and heat time heating time, use thermograde heating, temperature uses higher than conventional drying, temperature less than high temperature drying, being divided into some gradients to gradually rise from 55 ~ 110 DEG C, free stuff is heated a period of time by the temperature of each gradient；
Post processing: lower the temperature dried free stuff and conditioning, opens moistureproof window and blower fan, lowers the temperature free stuff until temperature is below 100 DEG C, is again turned on spraying steam valve spray saturated vapor damping a period of time.
Alternatively, depending on the dry total time of described drying steps is according to free stuff thickness, the drying time of 1mm thickness is 0.7 ~ 1.5h.
Alternatively, depending on the described post-processing step damping time is according to free stuff thickness, the 1cm thickness damping time is 1 ~ 1.5h.
Preferably, free stuff drying time of described 1mm thickness is 1h.
Preferably, the free stuff damping time of described 1cm thickness is 1h.
Free stuff quick drying kiln of the present invention and drying means thereof, it provides the benefit that:
The free stuff quick drying kiln of the present invention have selected the blower fan being relatively large in diameter, explosion proof window has been added at kiln body top, i.e. can reach quick-drying purpose, the pressure reduction formed when explosion proof window can also regulate fan starting is excessive and destruction to kiln body, increase the life-span of kiln body, minimizing cost, uses saturated vapor spray to steam preheating, preheats fast, to prevent seasoning defect drying defect generation.
Additionally, drying means of the present invention, use preheating, dry, the mode of post processing, preheating uses saturated vapor, use at times when being dried, higher than conventional drying, be dried less than the gradient temperature of high temperature drying, the rapid draing free stuff when timber high-moisture percentage, because temperature during the pre-heat treatment, humidity are of a relatively high, dry, wet-bulb depression is widened while reducing temperature after the pre-heat treatment terminates, moisture will move from interior under the common effect of thermograde and moisture gradient, thus accelerates rate of drying.Both ensure that the lumber quality in dry run, achieved rapid draing, and wood surface hardenability can have been reduced again, prevent wood color from deepening, improve dry mass.
Accompanying drawing explanation
Invention is further appreciated by by the picture that the explanation of this accompanying drawing is provided for assisting, and constitutes the part of the application, is not intended that inappropriate limitation of the present invention, in the accompanying drawings:
Accompanying drawing 1 is the external structure schematic diagram of free stuff quick drying kiln of the present invention.
Accompanying drawing 2 is the internal structure schematic diagram of free stuff quick drying kiln of the present invention.
Detailed description of the invention
To describe the present invention in detail with specific embodiment below, illustrative examples and explanation in this present invention are used for explaining the present invention, but not as a limitation of the invention.
As shown in accompanying drawing 1 ~ 2, free stuff quick drying kiln of the present invention, it includes kiln body 1, arranges blower fan 4, heater 3 and evaporation tank 2 in kiln body 1, and top arranges moistureproof window 5, humid air within getting rid of kiln body, kiln body top also sets up explosion proof window 6, the pressure differential formed during for regulating fan starting, prevents kiln body internal pressure differences excessive, and kiln body is produced and damages, described blower fan 4 is the blower fan of diameter 1.8 meters.Quick drying kiln of the present invention also includes a control system, is used for controlling the folding of each electric-controlled parts and controlling the parameters such as the time in each stage, temperature.Kiln body side arranges wicket 7 in order to feed.
By the method for above-mentioned free stuff quick drying kiln rapid draing free stuff, comprise the steps:
Preheating: open spraying steam valve by control system, superheated steam or high-pressure water heating in external boiler produce saturated vapor after evaporation tank and are ejected in kiln body, free stuff in kiln body is sprayed saturated vapor preheating, dry-bulb temperature in kiln body and wet bulb temperature raise simultaneously simultaneously, spraying steam equal to wet bulb temperature and stops spraying steam to dry-bulb temperature in kiln body more than 90 DEG C, a period of time is kept to preheat after having sprayed, depending on the time kept is according to the thickness of free stuff, inside and outside timber, temperature is uniform.
nullIt is dried: open heater，Control system is according to the heating-up temperature pre-set and heat time heating time，Thermograde heating is used to heat，For reducing free stuff Surface hardened layer、Improve dry mass、Prevent color burn to meet the prescription of furniture woods，Simultaneously the most again can when high-moisture percentage rapid draing free stuff，Temperature uses higher than conventional drying、Temperature less than high temperature drying，It is divided into some gradients to gradually rise from 55 ~ 110 DEG C，Because temperature during preheating、Humidity is of a relatively high，Widen dry while reducing temperature after preheating terminates、Wet-bulb depression，Moisture will move from interior under the common effect of thermograde and moisture gradient，Accelerate rate of drying，Free stuff is heated certain time by the temperature of each gradient，Not only ensure that the lumber quality in dry run but also achieve rapid draing，Depending on dry total time is according to free stuff thickness，Generally the drying time of 1mm thickness is 0.7 ~ 1.5h.
Post processing: for eliminating the residual stress in sheet material, ensure dry mass, dried free stuff is lowered the temperature and final conditioning, opening moistureproof window and blower fan, lower the temperature free stuff, temperature is again turned on spraying steam valve spray saturated vapor damping a period of time after being down to less than 100 DEG C, in temperature-fall period, sheet material moisture content will reduce under the effect of thermograde further, and depending on the damping time is according to free stuff thickness, the most every 1cm thickness damping time is 1 ~ 1.5h.
Embodiment 1:
As shown in accompanying drawing 1 ~ 2, free stuff quick drying kiln of the present invention, it includes kiln body 1, arranges blower fan 4, heater 3 and evaporation tank 2 in kiln body 1, and top arranges moistureproof window 5, humid air within getting rid of kiln body, kiln body top also sets up explosion proof window 6, the pressure differential formed during for regulating fan starting, prevents kiln body internal pressure differences excessive, and kiln body is produced and damages, described blower fan 4 is the blower fan of diameter 1.8 meters.Quick drying kiln of the present invention also includes a control system, is used for controlling the folding of each electric-controlled parts and controlling the parameters such as the time in each stage, temperature.Kiln body side arranges wicket 7 in order to feed.
By the method for above-mentioned free stuff quick drying kiln rapid draing free stuff, comprise the steps:
Preheating: thickness is that the pine sheet material of 50mm enters in kiln body by wicket, close wicket, spraying steam valve is opened by control system, superheated steam or high-pressure water heating in external boiler become saturated vapor after evaporation tank and are ejected in kiln body, pine sheet material in kiln body is sprayed saturated vapor preheating, dry-bulb temperature in kiln body and wet bulb temperature raise simultaneously simultaneously, spraying steam equal to wet bulb temperature and stops spraying steam to dry-bulb temperature in kiln body more than 90 DEG C, a period of time is kept to preheat after having sprayed, keeping 7h preheating, to timber, temperature is uniform.
nullIt is dried: open heater，Control system is according to the heating-up temperature pre-set and heat time heating time，Thermograde heating is used to heat，For reducing the hardening of pine plate surface、Improve dry mass、Prevent color burn to meet the prescription of furniture woods，Simultaneously the most again can when high-moisture percentage rapid draing free stuff，Temperature uses higher than conventional drying、Temperature less than high temperature drying，It is divided into some gradients to gradually rise from 55 ~ 110 DEG C，Because temperature during preheating、Humidity is of a relatively high，Widen dry while reducing temperature after preheating terminates、Wet-bulb depression，Moisture will move from interior under the common effect of thermograde and moisture gradient，Accelerate rate of drying，Pine sheet material is heated certain time by the temperature of each gradient，Not only ensure that the lumber quality in dry run but also achieve rapid draing，Dry total time is about 50h.
Post processing: for eliminating the residual stress in sheet material, ensure dry mass, dried pine sheet material is lowered the temperature and final conditioning, open moistureproof window and blower fan, pine sheet material is lowered the temperature, temperature is again turned on spraying steam valve spray saturated vapor damping 5h after being down to less than 100 DEG C, in temperature-fall period, sheet material moisture content will reduce under the effect of thermograde further.
The free stuff quick drying kiln of the present invention have selected the blower fan being relatively large in diameter, having added explosion proof window at kiln body top, i.e. can reach quick-drying purpose, the pressure reduction formed when explosion proof window can also regulate fan starting is excessive and destruction to kiln body, increase the life-span of kiln body, reduce cost；Use saturated vapor spray to steam preheating, preheat fast, to prevent seasoning defect drying defect generation.
Additionally, described drying means, use preheating, dry, the mode of post processing, preheating uses saturated vapor, when being dried, employing is higher than conventional drying at times, is dried less than the gradient temperature of high temperature drying, the rapid draing pine sheet material when timber high-moisture percentage, because temperature during the pre-heat treatment, humidity are of a relatively high, dry, wet-bulb depression is widened while reducing temperature after the pre-heat treatment terminates, moisture will move from interior under the common effect of thermograde and moisture gradient, thus accelerates rate of drying.Both ensure that the lumber quality in dry run, achieved rapid draing, and wood surface hardenability can have been reduced again, prevent wood color from deepening, improve dry mass.
The technical scheme provided the embodiment of the present invention above is described in detail, applying specific case herein to be set forth principle and the embodiment of the embodiment of the present invention, the explanation of above example is only applicable to help to understand the principle of the embodiment of the present invention；Simultaneously for one of ordinary skill in the art, according to the embodiment of the present invention, all will change in detailed description of the invention and range of application, in sum, this specification content should not be construed as limitation of the present invention.
Claims (5)
1. the method for a rapid draing free stuff, it is characterized in that: include free stuff quick drying kiln, described free stuff quick drying kiln includes kiln body, blower fan and heater are set in described kiln body, described kiln body top arranges moistureproof window, described kiln body top arranges explosion proof window, evaporation tank is set in described kiln body, described blower fan is the blower fan of diameter 1.8 meters, also include a control system, being used for controlling the folding of each electric-controlled parts and controlling the parameters such as the time in each stage, temperature, described kiln body side is arranged in order to the wicket fed；
By the method for described free stuff quick drying kiln rapid draing free stuff, comprise the steps:
Preheating: open spraying steam valve by control system, superheated steam or high-pressure water heating in external boiler become saturated vapor after evaporation tank and are ejected in kiln body, free stuff in kiln body is sprayed saturated vapor preheating, spraying steam equal to wet bulb temperature and stops spraying steam to dry-bulb temperature in kiln body more than 90 DEG C, and temperature keeps a period of time to preheat after reaching；
It is dried: open heater, control system is according to the heating-up temperature pre-set and heat time heating time, use thermograde heating, temperature uses higher than conventional drying, temperature less than high temperature drying, being divided into some gradients to gradually rise from 55 ~ 110 DEG C, free stuff is heated a period of time by the temperature of each gradient；
Post processing: lower the temperature dried free stuff and conditioning, opens moistureproof window and blower fan, lowers the temperature free stuff until temperature is below 100 DEG C, is again turned on spraying steam valve spray saturated vapor damping a period of time.
The method of rapid draing free stuff the most according to claim 1, it is characterised in that: depending on the dry total time of described drying steps is according to free stuff thickness, free stuff 0.7 ~ 1.5h drying time of every 1mm thickness.
The method of rapid draing free stuff the most according to claim 1, it is characterised in that: depending on the described post-processing step damping time is according to free stuff thickness, the free stuff damping time of every 1cm thickness is 1 ~ 1.5h.
The method of rapid draing free stuff the most according to claim 2, it is characterised in that: free stuff drying time of described 1mm thickness is 1h.
The method of rapid draing free stuff the most according to claim 3, it is characterised in that: described 1cm
The free stuff damping time of thickness is 1h.
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| CN201210428035.6A CN103791701B (en) | 2012-10-31 | 2012-10-31 | A kind of free stuff quick drying kiln and drying means thereof |
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| CN201210428035.6A CN103791701B (en) | 2012-10-31 | 2012-10-31 | A kind of free stuff quick drying kiln and drying means thereof |
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| CN103791701B true CN103791701B (en) | 2016-08-03 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830725B (en) * | 2015-12-10 | 2019-06-11 | 福建省慧通工艺品有限公司 | A kind of furnace drying method of timber |
| CN105716373A (en) * | 2016-01-30 | 2016-06-29 | 安徽福沃德干燥设备有限公司 | Method for drying poplar in dry kiln and used dry kiln |
| CN107696213B (en) * | 2017-10-26 | 2019-08-30 | 浙江国振家具有限公司 | A kind of method of timber high temperature drying processing |
| CN110877391B (en) * | 2019-11-27 | 2020-08-07 | 湖南威达尔木业科技有限公司 | Continuous wood modification heat treatment process and system |
| CN112611213A (en) * | 2020-12-19 | 2021-04-06 | 安徽龙鼎家居工贸有限公司 | Airflow circulating equipment for drying kiln |
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| EP1132704A1 (en) * | 2000-03-01 | 2001-09-12 | Societe d'etudes et Realisations de Travaux Electriques Sertelec S.A. | Process for drying wood and apparatus for carrying out this process |
| CN1313178A (en) * | 2001-03-20 | 2001-09-19 | 马世春 | Steam technology for drying wood |
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| JP2006349272A (en) * | 2005-06-16 | 2006-12-28 | Shinshiba Setsubi:Kk | Method and apparatus for regulating wet-bulb temperature inside wood drying chamber |
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| EP1132704A1 (en) * | 2000-03-01 | 2001-09-12 | Societe d'etudes et Realisations de Travaux Electriques Sertelec S.A. | Process for drying wood and apparatus for carrying out this process |
| CN1313178A (en) * | 2001-03-20 | 2001-09-19 | 马世春 | Steam technology for drying wood |
| JP2006349272A (en) * | 2005-06-16 | 2006-12-28 | Shinshiba Setsubi:Kk | Method and apparatus for regulating wet-bulb temperature inside wood drying chamber |
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