Summary of the invention
The object of the present invention is to provide a kind of Wood drying technique and the system thereof that can eliminate the timber internal stress.
The object of the invention is realized through following technical scheme:
A kind of Wood drying technique is characterized in that: timber carries out the health dried after the timber volume drying is handled; Said health dried is controlled at the health dried indoor 4 days-5 days that 20 ℃-30 ℃ and ambient humidity are controlled at 25%-35% for timber being positioned over environment temperature.
Wood drying technique according to the invention has also carried out following innovation:
After will passing through timber after the health dried and forming the specification material through carpenter's processed; Detect the panel moisture content of specification material; The counter plate moisture content carries out the dry tack free processing first time greater than 12% specification material; Dry tack free was treated to and the specification material is positioned over environment temperature was controlled at 30 ℃-40 ℃ and ambient humidity and is controlled in the dry tack free process chamber of 20%-30% said first time, was less than or equal to 12% until the panel moisture content and promptly finished for the first time dry tack free and handle.
To be less than or equal to the manufacturing procedure that 12% specification material directly carries out next stage through the panel moisture content that forms after carpenter's processed, perhaps be less than or equal to the manufacturing procedure that 12% specification material carries out next stage to handle the rear board moisture content through dry tack free for the first time; The manufacturing procedure of said next stage comprises that the scraped finish of successively carrying out is handled and polishing is handled, and after scraped finish is handled, before polishing is handled; The semi-finished product of handling through scraped finish are carried out the panel moisture content to be detected; When half-finished panel moisture content greater than 12% the time, earlier semi-finished product are carried out dry tack free processing second time, polish processing again; When half-finished panel moisture content is less than or equal to 12%, directly polish processing; Dry tack free was treated to and semi-finished product are positioned over environment temperature were controlled at 30 ℃-40 ℃ and ambient humidity and are controlled in the dry tack free process chamber of 20%-30% said second time, was less than or equal to 12% until the panel moisture content and promptly finished for the second time dry tack free and handle.
Said timber volume drying processed steps is carried out as follows successively:
The A stacking is handled: the timber stacking is positioned over well in the dry timber volume drying process chamber, in this step or step C, starts being positioned over the monitoring of the moisture content in the timber volume drying process chamber;
B preliminary treatment: behind the completing steps A, the environment temperature heat temperature raising to 45 in the said timber volume drying of the steps A process chamber ℃ is regulated ambient humidity to 18.5% simultaneously, kept afterwards 24 hours with 4 ℃ programming rate per hour;
C hyperthermic treatment for the first time: behind the completing steps B, regulate environment temperature and ambient humidity in the timber volume drying process chamber, make environment temperature rise to 48 ℃, ambient humidity reduces to 12%, and keeps this environment temperature and environmental damp condition;
D is Balance Treatment for the first time: when monitoring acquisition moisture content is 35%; End step C regulates environment temperature and ambient humidity in the timber volume drying process chamber, makes environment temperature rise to 50 ℃; Ambient humidity rises to 18%, and keeps this environment temperature and environmental damp condition 16 hours;
E hyperthermic treatment for the second time: behind the completing steps D, regulate environment temperature and ambient humidity in the timber volume drying process chamber, make environment temperature rise to 55 ℃, ambient humidity reduces to 11%, and keeps this environment temperature and environmental damp condition;
F is Balance Treatment for the second time: when monitoring acquisition moisture content is 25%; End step E regulates environment temperature and ambient humidity in the timber volume drying process chamber, makes environment temperature rise to 58 ℃; Ambient humidity rises to 17.5%, and keeps this environment temperature and environmental damp condition 14 hours;
G is hyperthermic treatment for the third time: behind the completing steps F, regulate environment temperature and ambient humidity in the timber volume drying process chamber, make environment temperature rise to 60 ℃, ambient humidity reduces to 9%, and keeps this environment temperature and environmental damp condition;
The 4th hyperthermic treatment of H: when monitoring acquisition moisture content is 16%; End step G regulates environment temperature and ambient humidity in the timber volume drying process chamber, makes environment temperature rise to 63 ℃; Ambient humidity reduces to 7.5%, and keeps this environment temperature and environmental damp condition;
The I processing that ends: when monitoring obtains moisture content and is 10%; End step H regulates environment temperature and ambient humidity in the timber volume drying process chamber, makes environment temperature rise to 65 ℃; Ambient humidity rises to 10%, and keeps this environment temperature and environmental damp condition 16 hours;
The J processing of lowering the temperature: behind the completing steps I, regulate the environment temperature in the timber volume drying process chamber, make environment temperature reduce to 52 ℃, ambient humidity remains 10%, and keeps this environment temperature and environmental damp condition;
The K cooling processing: when monitoring acquisition moisture content was 8%, end step J made cooling naturally in the timber volume drying process chamber, and timber shifts out in timber volume drying process chamber after naturally cooling to common room temperature.
A kind of drying of wood system is characterized in that: it comprises and is used for carrying out timber volume drying device that the timber volume drying handles and the health drying device that is used for carrying out the health dried; Said health drying device comprises the dry humiture monitor controller of health that is used for controlling indoor environment temperature of health dried and ambient humidity that is used for placing the airtight health dried chamber that can open and close of timber and is located at health dried chamber.
The drying of wood according to the invention system has also carried out following innovation:
It also comprises the dry tack free device that is used for carrying out the dry tack free processing; Said dry tack free device comprise be used for placing the airtight dry tack free process chamber that can open and close of timber and be located at the dry tack free process chamber be used for the indoor environment temperature of control surface dried and the dry tack free humiture monitor controller of ambient humidity.
Said timber volume drying device comprises the airtight timber volume drying process chamber that can open and close that is used for placing timber, be located at being used in the timber volume drying process chamber monitors the timber moisture of moisture content and visits wet line and be located at timber volume drying process chamber and can control to adjust environment temperature and the timber volume drying humiture monitor controller of ambient humidity in the timber volume drying process chamber according to the moisture content that monitors with timber moisture visits that wet line is connected.
Compared to prior art, the invention has the advantages that:
(1) timber is carried out the health drying, can eliminate the timber internal stress, prevent in the production to occur quality problems such as sheet deformation cracking because of the timber internal stress;
(2) timber is carried out dry tack free; Can reduce the moisture content that wood surface increases because of getting damp; Reach the moisture content between each parts of balance beam section product; Reduce and to occur the probability that distortion, cracking and paint adhere to quality problems such as insecure in the production, and overcome the cere inequality, increase the glossiness and the hardness of cere simultaneously;
(3) adopt this drying of wood treatment process, make the moisture content of sheet material be controlled in 8-12%, be suitable for the production of Wood products such as furniture, reduce the probability that occurs quality problems such as strain cracking in the production, to improve the product quality of wood furniture;
(4) adopt this drying of wood system, convenient operation and control effectively guarantees dry mass.
The specific embodiment
Below in conjunction with Figure of description and embodiment content of the present invention is elaborated:
A kind of Wood drying technique is characterized in that: timber carries out the health dried after the timber volume drying is handled; Said health dried is controlled at the health dried chamber 1 interior 4 days-5 days that 20 ℃-30 ℃ and ambient humidity are controlled at 25%-35% for timber being positioned over environment temperature.
After will passing through timber after the health dried and forming the specification material through carpenter's processed; Detect the panel moisture content of specification material; The counter plate moisture content carries out the dry tack free processing first time greater than 12% specification material; Dry tack free was treated to and the specification material is positioned over environment temperature was controlled at 30 ℃-40 ℃ and ambient humidity and is controlled in the dry tack free process chamber 7 of 20%-30% said first time, was less than or equal to 12% until the panel moisture content and promptly finished for the first time dry tack free and handle.
To be less than or equal to the manufacturing procedure that 12% specification material directly carries out next stage through the panel moisture content that forms after carpenter's processed, perhaps be less than or equal to the manufacturing procedure that 12% specification material carries out next stage to handle the rear board moisture content through dry tack free for the first time; The manufacturing procedure of said next stage comprises that the scraped finish of successively carrying out is handled and polishing is handled, and after scraped finish is handled, before polishing is handled; The semi-finished product of handling through scraped finish are carried out the panel moisture content to be detected; When half-finished panel moisture content greater than 12% the time, earlier semi-finished product are carried out dry tack free processing second time, polish processing again; When half-finished panel moisture content is less than or equal to 12%, directly polish processing; Dry tack free was treated to and semi-finished product are positioned over environment temperature were controlled at 30 ℃-40 ℃ and ambient humidity and are controlled in the dry tack free process chamber 7 of 20%-30% said second time, was less than or equal to 12% until the panel moisture content and promptly finished for the second time dry tack free and handle.
Said timber volume drying processed steps is carried out as follows successively:
The A stacking is handled: the timber stacking is positioned over well in the dry timber volume drying process chamber 14, in this step or step C, starts being positioned over the monitoring of the moisture content in the timber volume drying process chamber 14;
B preliminary treatment: behind the completing steps A, the environment temperature heat temperature raising to 45 in the said timber volume drying of the steps A process chamber 14 ℃ is regulated ambient humidity to 18.5% simultaneously, kept afterwards 24 hours with 4 ℃ programming rate per hour;
C hyperthermic treatment for the first time: behind the completing steps B, regulate environment temperature and ambient humidity in the timber volume drying process chamber 14, make environment temperature rise to 48 ℃, ambient humidity reduces to 12%, and keeps this environment temperature and environmental damp condition;
D is Balance Treatment for the first time: when monitoring acquisition moisture content is 35%; End step C regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 50 ℃; Ambient humidity rises to 18%, and keeps this environment temperature and environmental damp condition 16 hours;
E hyperthermic treatment for the second time: behind the completing steps D, regulate environment temperature and ambient humidity in the timber volume drying process chamber 14, make environment temperature rise to 55 ℃, ambient humidity reduces to 11%, and keeps this environment temperature and environmental damp condition;
F is Balance Treatment for the second time: when monitoring acquisition moisture content is 25%; End step E regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 58 ℃; Ambient humidity rises to 17.5%, and keeps this environment temperature and environmental damp condition 14 hours;
G is hyperthermic treatment for the third time: behind the completing steps F, regulate environment temperature and ambient humidity in the timber volume drying process chamber 14, make environment temperature rise to 60 ℃, ambient humidity reduces to 9%, and keeps this environment temperature and environmental damp condition;
The 4th hyperthermic treatment of H: when monitoring acquisition moisture content is 16%; End step G regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 63 ℃; Ambient humidity reduces to 7.5%, and keeps this environment temperature and environmental damp condition;
The I processing that ends: when monitoring obtains moisture content and is 10%; End step H regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 65 ℃; Ambient humidity rises to 10%, and keeps this environment temperature and environmental damp condition 16 hours;
The J processing of lowering the temperature: behind the completing steps I, regulate the environment temperature in the timber volume drying process chamber 14, make environment temperature reduce to 52 ℃, ambient humidity remains 10%, and keeps this environment temperature and environmental damp condition;
The K cooling processing: when monitoring acquisition moisture content was 8%, end step J made cooling naturally in the timber volume drying process chamber 14, and timber shifts out in timber volume drying process chamber 14 after naturally cooling to common room temperature.
Extremely shown in Figure 4 like Fig. 1 is a kind of drying of wood system implementation illustration intention provided by the invention.
Said drying of wood system comprises and is used for carrying out timber volume drying device that the timber volume drying handles and the health drying device that is used for carrying out the health dried; Said health drying device comprise be used for placing the airtight health dried chamber 1 that can open and close of timber and be located at health dried chamber 1 be used for controlling environment temperature and the health drying humiture monitor controller of ambient humidity in the health dried chamber 1.
The dry humiture monitor controller of said health comprises to be located at the outer dry controller 2 of health in health dried chamber 1, to be located at first firing equipment 3 in the health dried chamber 1, to be located at dehumidifier 4 in the health dried chamber 1, to be located at first blast apparatus 5 in the health dried chamber 1 and to be located at the first humiture sniffer 6 in the health dried chamber 1; The dry controller 2 of said health links to each other with the first humiture sniffer 6, the function that environment temperature in 2 pairs of health dried of the dry controller of realization health chamber 1 and ambient humidity are monitored; The dry controller 2 of said health links to each other with first firing equipment 3, and the dry controller 2 of realization health is controlled first firing equipment 3 according to the environment temperature situation in the health dried chamber 1 of monitoring acquisition and worked to regulate the function of the environment temperature in the health dried chamber 1; The dry controller 2 of said health links to each other with dehumidifier 4, and the dry controller 2 of realization health is controlled the function of dehumidifier 4 work with the ambient humidity in the adjusting health dried chamber 1 according to the ambient humidity situation of monitoring in the health dried chamber 1 that obtains; The dry controller 2 of said health links to each other with first blast apparatus 5, realizes that 5 work of dry controller 2 controls of health first blast apparatus are so that the function that air flows in the health dried chamber 1.The said first humiture sniffer 6 can be to be made up of environment temperature probe and ambient humidity probe, also can be integral type ambient temperature and humidity detector.
Said dehumidifier 4 is provided with and health dried chamber 1 outer first moisture exhausting port 24 that is communicated with.
Said first firing equipment 3 is located at first blast apparatus, 5 air outlet front sides.
Said drying of wood system also comprises and is used for carrying out the dry tack free device that dry tack free is handled; Said dry tack free device comprises environment temperature and the dry tack free humiture monitor controller of ambient humidity in the control surface dried chamber 7 of being used for that is used for placing the airtight dry tack free process chamber 7 that can open and close of timber and is located at dry tack free process chamber 7.
Said dry tack free humiture monitor controller comprises the dry tack free controller of being located at outside the dry tack free process chamber 78; Be located at the second humiture sniffer 9 in the dry tack free process chamber 7; Be located at first Humidity regulating equipment in the dry tack free process chamber 7; One that is positioned at that dry tack free process chamber 7 one side outsides and air inlet 11-1 and air outlet 11-2 be communicated with dry tack free process chamber 7 upper and lowers respectively with upper air duct 11; Be located at second firing equipment 12 at 11 air outlet 11-2 places, every air channel and be located at second blast apparatus 13 on every air channel 11 and between second firing equipment 12 and air inlet 11-1; Said dry tack free controller 8 links to each other with the second humiture sniffer 9, the function that environment temperature in 8 pairs of surperficial dried of realization dry tack free controller chamber 7 and ambient humidity are monitored; Said dry tack free controller 8 links to each other with second firing equipment 12, realizes that the environment temperature situations in the dry tack free process chamber 7 that dry tack free controller 8 obtains according to monitoring are controlled 12 work of second firing equipment to regulate the function of the environment temperature in the surperficial dried chamber 7; Said dry tack free controller 8 links to each other with first Humidity regulating equipment, and realization dry tack free controller 8 is controlled the first Humidity regulating equipment work to regulate the function of the ambient humidity in the surperficial dried chamber 7 according to the dry tack free process chamber 7 interior ambient humidity situations that monitoring obtains; Said dry tack free controller 8 links to each other with second blast apparatus 13, realizes that 13 work of dry tack free controller 8 controls second blast apparatus are so that the function that air flows in the dry tack free process chamber 7.The said second humiture sniffer 9 can be to be made up of environment temperature probe and ambient humidity probe, also can be integral type ambient temperature and humidity detector.
Said first Humidity regulating equipment comprise link to each other with second steam input device 22 and by 8 controls of dry tack free controller open and close squirt device 10-1 and be located at ability the communicating surface dried chamber 7 at dry tack free process chamber 7 tops inside and outside and by the second moisture exhausting port 10-2 of dry tack free controller 8 control keyings.When needs add wet process to surperficial dried chamber 7; Unlatching squirts steam that device 10-1 transports second steam input device 22 and sends into and carry out humidification in the dry tack free process chamber 7, and the ambient humidities in the dry tack free process chamber 7 reach promptly to close behind the target humidity and squirt device 10-1 to stop humidification; When needs carry out dehumidification treatments in to surperficial dried chamber 7; Open the second moisture exhausting port 10-2 moisture in the dry tack free process chamber 7 is discharged by the second moisture exhausting port 10-2, the ambient humidity in the dry tack free process chamber 7 is promptly closed the second moisture exhausting port 10-2 to stop dehumidifying after reaching target humidity.
Said dry tack free process chamber 7 tops are being provided with air-return duct 25 with 11 corresponding sections, every air channel; The return air outlet 25-1 of air-return duct 25 is relative with air channel 11 air inlet 11-1, and the return air outlet 25-1 of air-return duct 25 and return air inlet 25-2 lay respectively at dry tack free process chamber 7 both sides.
The quantity in said air channel 11 is more than two, and the outside, the same side of dry tack free process chamber 7 is located in each air channel 11.
The wood-drying apparatus comprises means for placing the whole timber to a sealed timber opening and closing the whole drying chamber 14, located in the timber as a whole within the drying chamber 14 to monitor the moisture content of wood Wood Moisture Probe wet line 16, and located in Wood drying chamber 14 and the whole wood moisture and wet line probe (16) can be connected to the monitoring control of wood moisture regulation of wood drying chamber 14 overall environmental temperature and the ambient humidity of wood drying temperature and humidity monitoring the overall control means .
Said timber volume drying humiture monitor controller comprises to be located at the outer timber volume drying controller 15 of timber volume drying process chamber 14, to visit signal receiving and processing equipment 17 that wet line 16 is connected with timber moisture, to be located at the 3rd firing equipment in the timber volume drying process chamber 14, to be located at the second interior Humidity regulating equipment of timber volume drying process chamber 14 and to be located at the 3rd interior blast apparatus 20 of timber volume drying process chamber 14; Said signal receiving and processing equipment 17 comprises environment temperature and the ambient humidity detector that is positioned at timber volume drying process chamber 14; Said timber volume drying controller 15 links to each other with signal receiving and processing equipment 17, the function that environment temperature in 15 pairs of timber volume dryings of realization timber volume drying controller process chamber 14 and ambient humidity are monitored; Said timber volume drying controller 15 is visited wet line 16 through signal receiving and processing equipment 17 and timber moisture and is linked to each other, and realizes monitoring and handling timber moisture and visits the function that wet line 16 detects the moisture content signal of acquisition; Said timber volume drying controller 15 links to each other with the 3rd firing equipment, realizes that the situation of environment temperatures in moisture content that timber volume drying controller 15 obtains according to monitoring and the timber volume drying controller 15 is controlled the 3rd firing equipment work to regulate the function of the environment temperature in the timber volume drying process chamber 14; Said timber volume drying controller 15 links to each other with second Humidity regulating equipment, realizes that the situation of environment temperatures in moisture content that timber volume drying controller 15 obtains according to monitoring and the timber volume drying controller 15 is controlled the second Humidity regulating equipment work to regulate the function of the ambient humidity in the timber volume drying process chamber 14; Said timber volume drying controller 15 links to each other with the 3rd blast apparatus 20, realizes that timber volume drying controller 15 is controlled 20 work of the 3rd blast apparatus as required so that the function that timber volume drying process chamber 14 interior air flow.Said environment temperature and ambient humidity detector can be to be made up of environment temperature probe and ambient humidity probe, also can be integral type ambient temperature and humidity detectors.
Said second Humidity regulating equipment comprises humidifier and dehumidifier.
The tank 19-3 that said humidifier comprises steam spray pipe road 19-1 that entrance point links to each other with the 3rd steam input device 23, be located at that steam spray pipe road 19-1 goes up and steamed magnetic valve 19-2 and be located at 19-1 port of export place, steam spray pipe road by the spray of timber volume drying controller 15 controls; The said steam spray pipe road 19-1 port of export is positioned at tank 19-3.Before carrying out the processing of timber volume drying, the water of in tank 19-3, packing into is immersed in the water steam spray pipe road 19-1 port of export.When carrying out the processing of timber volume drying; The moisture content and the timber volume drying process chamber 14 interior ambient humidity situations that obtain according to monitoring make 15 pairs of humidifiers of timber volume drying controller carry out corresponding control operation: when the ambient humidity in the needs rising timber volume drying process chamber 14; The 15 control sprays of timber volume drying controller are steamed magnetic valve 19-2 and are opened certain aperture, and the steam that the 3rd steam input device 23 transports gets in the timber volume drying process chamber 14 after sending into tank 19-3 via steam spray pipe road 19-1; Water among the tank 19-3 reduces vapor (steam) temperature, to prevent high-temperature steam timber is damaged; After the ambient humidity in the timber volume drying process chamber 14 is increased to target humidity, promptly close spray and steam magnetic valve 6-2 to stop humidification.
Said dehumidifier is to be located at being communicated with inside and outside the timber volume drying process chamber 14 and by timber volume drying controller 15 of timber volume drying process chamber 14 tops to control the 3rd moisture exhausting port 26 that opens and closes.When carrying out the processing of timber volume drying; The moisture content and the timber volume drying process chamber 14 interior environment temperature situation controllers that obtain according to monitoring carry out corresponding control operation to dehumidifier: when the ambient humidity in the needs reduction timber volume drying process chamber 14; Open the 3rd moisture exhausting port 26 moisture in the timber volume drying process chamber 14 is discharged by the 3rd moisture exhausting port 26, to reduce ambient humidity; , the ambient humidity in the timber volume drying process chamber 14 promptly closes the 3rd moisture exhausting port 26 after being reduced to target humidity to stop hydrofuge.
Said signal receiving and processing equipment 17 comprise visit the signal receiver 17-1 that wet line 16 links to each other with timber moisture and be connected in signal receiver 17-1 and timber volume drying controller 15 between signal amplifier 17-2; Said environment temperature and ambient humidity detector are located on the signal receiver 3-1.
Said first firing equipment 3 is for to link to each other with first radiator that utilizes steam to heat with first steam input device 21; Said second firing equipment 12 is for to link to each other with second radiator that utilizes steam to heat with second steam input device 22; Said the 3rd firing equipment comprises connection pipeline 18-1, the arrival end that entrance point is connected with the 3rd steam input device 23 and is connected the 3rd radiator 18-2 that the pipeline 18-1 port of export links to each other and the water return pipeline 18-3 that links to each other with the 3rd radiator 18-2 port of export, and said connection pipeline 18-1 is provided with by what timber volume drying controller 15 was controlled and adds thermoelectrical magnetic valve 18-4.
Said first blast apparatus 5, second blast apparatus 13 and the 3rd blast apparatus 20 are high temperature resistant blower fan.
The method for using of said health drying device is following:
1, the sheet material after the timber volume drying is handled is on request in the health dried chamber 1 of proper alignment at the health drying device, airtight thereafter health dried chamber 1;
2, on the dry controller 2 of health, configure health dry target humiture and start-up control appearance, generally in 20 ℃ of-30 ℃ of scopes, target humidity is generally in the 25%-35% scope for target temperature;
3, the dry controller 2 of health monitors environment temperature and ambient humidity in the health dried chamber 1 according to the first humiture sniffer 6; Control first firing equipment 3, dehumidifier 4 and 5 work of first blast apparatus, make it reach desired target humiture with environment temperature and ambient humidity in the adjustment health dried chamber 1; When the temperature that monitors is lower than target temperature; Start in 3 pairs of health dried of first firing equipment chamber 1 and carry out hyperthermic treatment; Start first blast apparatus 5 simultaneously and make air circulation in the health dried chamber 1; Guarantee that environment temperature is consistent in the health dried chamber 1 everywhere, reach the work that promptly stops first firing equipment 3 and first blast apparatus 5 behind the target temperature; When the ambient humidity that monitors is higher than target humidity; Start in 4 pairs of health dried of dehumidifier chamber 1 and carry out dehumidification treatments; Start first blast apparatus 5 simultaneously and make air circulation in the cavity; Guarantee that ambient humidity is consistent in the health dried chamber 1 everywhere, reach the work that promptly stops dehumidifier and blast apparatus behind the target humidity; During environment temperature in needs reduce health dried chamber 1, only need stop the work of first firing equipment 3, carry out atural beat through the health dried chamber 1 and the external world and exchange and realize;
4, the health cycle was generally 4-5 days.
Said health drying device is convenient operation and control not only, and utilizes this device that timber is carried out health and handle, and can eliminate the timber internal stress, reduces the probability that occurs quality problems such as strain cracking in the production.
The method for using of said dry tack free device is following:
1, sheet material through specification material that the carpenter is processed into or specification material through the semi-finished product after the scraped finish; Be higher than in the dry tack free process chamber 7 that 12% specification material or semi-finished product send into the dry tack free device through detecting the panel moisture content; Proper alignment and keep 1 meter distance, airtight thereafter dry tack free process chamber 7 in order with second firing equipment 12;
2, on dry tack free controller 8, configure the target humiture that dry tack free handles and start dry tack free controller 8, generally in 30 ℃ of-40 ℃ of scopes, target humidity is generally in the 20%-30% scope for target temperature;
3, environment temperature and the ambient humidity in the dry tack free process chamber 7 that monitors according to the second humiture sniffer 9 of dry tack free controller 8; Control the work of second firing equipment 12, first Humidity regulating equipment and second blast apparatus 13, make it reach desired target humiture with environment temperature and the ambient humidities of adjusting in the surperficial dried chamber 7; When the environment temperature that monitors is lower than target temperature; Start 12 pairs of surperficial dried of second firing equipment chamber 7 and carry out hyperthermic treatment; Starting second blast apparatus 13 simultaneously sends into the hot gas of second firing equipment 12 in the dry tack free process chamber 7 and makes air circulation in the dry tack free process chamber 7; Guarantee that environment temperature is consistent in the dry tack free process chamber 7 everywhere, reach the work that promptly stops second firing equipment 12 and second blast apparatus 13 behind the target temperature; When the ambient humidity that monitors is below or above target humidity; Start first Humidity regulating equipment humidification or dehumidification treatments are carried out in surperficial dried chamber 7; Start second blast apparatus 13 simultaneously and make air circulation in the dry tack free process chamber 7; Guarantee that ambient humidity is consistent in the dry tack free process chamber 7 everywhere, reach the work that promptly stops first Humidity regulating equipment and second blast apparatus 13 behind the target humidity; During environment temperature in needs reduce dry tack free process chamber 7, only need stop the work of second firing equipment 12, carry out atural beat through the dry tack free process chamber 7 and the external world and exchange and realize;
4, the dry tack free cycle is 4-7 days, detects the panel moisture content and whether is lower than 12%, be lower than 12% can finish dry tack free, be higher than 12% then need continue drying.
Said dry tack free device is convenient operation and control not only; And utilize this device that timber is carried out dry tack free and handle; Can reduce the moisture content that wood surface increases because of getting damp, reach the moisture content between each parts of balance timber furniture item, reduce and to occur the probability that distortion, cracking and paint adhere to quality problems such as insecure in the production; And overcome the cere inequality, increase the glossiness and the hardness of cere simultaneously.
The method for using of said timber volume drying device is following:
1, the dry sheet material of need is cleared up, removed surperficial wood powder, dirt etc.
2, the sheet material of cleaning out is carried out the material classification and carry out the stacking packing by the requirement of sheet material stacking simultaneously;
3, the good sheet material of will packing is sent in the dry kiln body;
4, the drying of on sheet material, selecting to be fit to through test is visited point, utilizes rig to hole, and timber moisture is visited the spy ailing of wet line 16 and is gone into; General moisture content test point will be selected on the wet sheet material, and will visiting ailing, to go into length be sheet metal thickness 1/3-1/2, and the spacing of visiting between following closely is 30mm; , be advisable with the centre position, and will avoid defective locations such as knot, white edge apart from greater than 30cm from the sheet material two ends in the position that the spy nail is chosen; Having on the sheet material of bark, because the timber water loss of bark position is slower, can be with the position of visiting nail a little near bark; Visit when ailing is gone into sheet material and will parallel, can not parallel with length direction with redwood sheet material width;
5, airtight timber volume drying process chamber 14; Start timber volume drying controller 15; Importing this drying process parameter of corresponding drying process parameter can carry out relative set according to the volume drying of timber described in Wood drying technique processed steps, the beginning dried;
6, timber volume drying controller 15 is according to the moisture content and the timber volume drying process chamber 14 interior environment temperature situations of monitoring acquisition; Through controlling the 3rd firing equipment to the control of going up and down of the environment temperature in the dry kiln body; And control the work of the 3rd blast apparatus 20 and make air circulation in the timber volume drying process chamber 14, guarantee that environment temperature is consistent in the timber volume drying process chamber 14 everywhere; Through controlling second Humidity regulating equipment to the control of going up and down of the ambient humidities in the timber volume drying process chamber 14; And control the work of the 3rd blast apparatus 20 and make air circulation in the timber volume drying process chamber 14, guarantee that ambient humidity is consistent in the timber volume drying process chamber 14 everywhere; During environment temperature in needs reduce timber volume drying process chamber 14, only need stop the work of the 3rd firing equipment, carry out atural beat through the timber volume drying process chamber 14 and the external world and exchange and realize;
7, the moisture content that obtains when monitoring reaches target component, can stop dry work;
8, since in the timber volume drying process chamber of the later stage of drying 14 environment temperatures higher, can produce explosion when preventing the sheet material kiln discharge of heat, could kiln discharge after must sheet material being naturally cooled to common room temperature.
Said timber volume drying device is convenient operation and control not only; And utilize this device that timber is carried out dried; Make the moisture content of sheet material be controlled in 8-12%; Be suitable for the production of Wood products such as furniture, reduce the probability that occurs quality problems such as strain cracking in the production, to improve the product quality of wood furniture.
Embodiment 1:
Timber carries out the health dried after the timber volume drying is handled; Said health dried is controlled at 20 ℃ and ambient humidity and is controlled at 25% health dried chamber 1 interior 4 days for timber being positioned over environment temperature.
Embodiment 2:
Timber carries out the health dried after the timber volume drying is handled; Said health dried is controlled at 30 ℃ and ambient humidity and is controlled at 35% health dried chamber 1 interior 5 days for timber being positioned over environment temperature.
Embodiment 3:
Timber carries out the health dried after the timber volume drying is handled; Said health dried is controlled at 25 ℃ and ambient humidity and is controlled at 30% health dried chamber 1 interior 4.5 days for timber being positioned over environment temperature.
Experiment 1:
The timber of choosing the equal specification of same material is divided into experimental group 1, experimental group 2, experimental group 3 and control group 1.
The timber of experimental group 1, experimental group 2, experimental group 3 and control group 1 is carried out identical timber volume drying processing simultaneously.
After the timber volume drying was handled, experimental group 1 was handled by embodiment 1 said Wood drying technique; Experimental group 2 is handled by embodiment 2 said Wood drying techniques; Experimental group 3 is handled by embodiment 3 said Wood drying techniques; Control group 1 does not carry out any processing.
Thereafter, the timber with experimental group 1, experimental group 2, experimental group 3 and control group 1 carries out identical Wood Processing making processing respectively.
Find during Wood Processing is made and handled that the quality problems of strain cracking do not appear in the timber of experimental group 1, experimental group 2 and experimental group 3, and tangible strain cracking phenomenon appears in control group 1.
Embodiment 4:
A kind of Wood drying technique is characterized in that: timber carries out the health dried after the timber volume drying is handled; Said health dried is controlled at 30 ℃ and ambient humidity and is controlled at 25% health dried chamber 1 interior 4 days for timber being positioned over environment temperature.
After will passing through timber after the health dried and forming the specification material through carpenter's processed; Detect the panel moisture content of specification material; The counter plate moisture content carries out the dry tack free processing first time greater than 12% specification material; Dry tack free was treated to and the specification material is positioned over environment temperature was controlled at 30 ℃ and ambient humidity and is controlled in 30% the dry tack free process chamber 7 said first time, was less than or equal to 12% until the panel moisture content and promptly finished for the first time dry tack free and handle.
To be less than or equal to the manufacturing procedure that 12% specification material directly carries out next stage through the panel moisture content that forms after carpenter's processed, perhaps be less than or equal to the manufacturing procedure that 12% specification material carries out next stage to handle the rear board moisture content through dry tack free for the first time; The manufacturing procedure of said next stage comprises that the scraped finish of successively carrying out is handled and polishing is handled, and after scraped finish is handled, before polishing is handled; The semi-finished product of handling through scraped finish are carried out the panel moisture content to be detected; When half-finished panel moisture content greater than 12% the time, earlier semi-finished product are carried out dry tack free processing second time, polish processing again; When half-finished panel moisture content is less than or equal to 12%, directly polish processing; Dry tack free was treated to and semi-finished product are positioned over environment temperature were controlled at 40 ℃ and ambient humidity and are controlled in 20% the dry tack free process chamber 7 said second time, was less than or equal to 12% until the panel moisture content and promptly finished for the second time dry tack free and handle.
Said timber volume drying processed steps is carried out as follows successively:
The A stacking is handled: the timber stacking is positioned over well in the dry timber volume drying process chamber 14, in this step or step C, starts being positioned over the monitoring of the moisture content in the timber volume drying process chamber 14;
B preliminary treatment: behind the completing steps A, the environment temperature heat temperature raising to 45 in the said timber volume drying of the steps A process chamber 14 ℃ is regulated ambient humidity to 18.5% simultaneously, kept afterwards 24 hours with 4 ℃ programming rate per hour;
C hyperthermic treatment for the first time: behind the completing steps B, regulate environment temperature and ambient humidity in the timber volume drying process chamber 14, make environment temperature rise to 48 ℃, ambient humidity reduces to 12%, and keeps this environment temperature and environmental damp condition;
D is Balance Treatment for the first time: when monitoring acquisition moisture content is 35%; End step C regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 50 ℃; Ambient humidity rises to 18%, and keeps this environment temperature and environmental damp condition 16 hours;
E hyperthermic treatment for the second time: behind the completing steps D, regulate environment temperature and ambient humidity in the timber volume drying process chamber 14, make environment temperature rise to 55 ℃, ambient humidity reduces to 11%, and keeps this environment temperature and environmental damp condition;
F is Balance Treatment for the second time: when monitoring acquisition moisture content is 25%; End step E regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 58 ℃; Ambient humidity rises to 17.5%, and keeps this environment temperature and environmental damp condition 14 hours;
G is hyperthermic treatment for the third time: behind the completing steps F, regulate environment temperature and ambient humidity in the timber volume drying process chamber 14, make environment temperature rise to 60 ℃, ambient humidity reduces to 9%, and keeps this environment temperature and environmental damp condition;
The 4th hyperthermic treatment of H: when monitoring acquisition moisture content is 16%; End step G regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 63 ℃; Ambient humidity reduces to 7.5%, and keeps this environment temperature and environmental damp condition;
The I processing that ends: when monitoring obtains moisture content and is 10%; End step H regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 65 ℃; Ambient humidity rises to 10%, and keeps this environment temperature and environmental damp condition 16 hours;
The J processing of lowering the temperature: behind the completing steps I, regulate the environment temperature in the timber volume drying process chamber 14, make environment temperature reduce to 52 ℃, ambient humidity remains 10%, and keeps this environment temperature and environmental damp condition;
The K cooling processing: when monitoring acquisition moisture content was 8%, end step J made cooling naturally in the timber volume drying process chamber 14, and timber shifts out in timber volume drying process chamber 14 after naturally cooling to common room temperature.
Embodiment 5:
A kind of Wood drying technique is characterized in that: timber carries out the health dried after the timber volume drying is handled; Said health dried is controlled at 20 ℃ and ambient humidity and is controlled at 35% health dried chamber 1 interior 5 days for timber being positioned over environment temperature.
After will passing through timber after the health dried and forming the specification material through carpenter's processed; Detect the panel moisture content of specification material; The counter plate moisture content carries out the dry tack free processing first time greater than 12% specification material; Dry tack free was treated to and the specification material is positioned over environment temperature was controlled at 40 ℃ and ambient humidity and is controlled in 20% the dry tack free process chamber 7 said first time, was less than or equal to 12% until the panel moisture content and promptly finished for the first time dry tack free and handle.
To be less than or equal to the manufacturing procedure that 12% specification material directly carries out next stage through the panel moisture content that forms after carpenter's processed, perhaps be less than or equal to the manufacturing procedure that 12% specification material carries out next stage to handle the rear board moisture content through dry tack free for the first time; The manufacturing procedure of said next stage comprises that the scraped finish of successively carrying out is handled and polishing is handled, and after scraped finish is handled, before polishing is handled; The semi-finished product of handling through scraped finish are carried out the panel moisture content to be detected; When half-finished panel moisture content greater than 12% the time, earlier semi-finished product are carried out dry tack free processing second time, polish processing again; When half-finished panel moisture content is less than or equal to 12%, directly polish processing; Dry tack free was treated to and semi-finished product are positioned over environment temperature were controlled at 30 ℃ and ambient humidity and are controlled in 30% the dry tack free process chamber 7 said second time, was less than or equal to 12% until the panel moisture content and promptly finished for the second time dry tack free and handle.
Said timber volume drying processed steps is carried out as follows successively:
The A stacking is handled: the timber stacking is positioned over well in the dry timber volume drying process chamber 14, in this step or step C, starts being positioned over the monitoring of the moisture content in the timber volume drying process chamber 14;
B preliminary treatment: behind the completing steps A, the environment temperature heat temperature raising to 45 in the said timber volume drying of the steps A process chamber 14 ℃ is regulated ambient humidity to 18.5% simultaneously, kept afterwards 24 hours with 4 ℃ programming rate per hour;
C hyperthermic treatment for the first time: behind the completing steps B, regulate environment temperature and ambient humidity in the timber volume drying process chamber 14, make environment temperature rise to 48 ℃, ambient humidity reduces to 12%, and keeps this environment temperature and environmental damp condition;
D is Balance Treatment for the first time: when monitoring acquisition moisture content is 35%; End step C regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 50 ℃; Ambient humidity rises to 18%, and keeps this environment temperature and environmental damp condition 16 hours;
E hyperthermic treatment for the second time: behind the completing steps D, regulate environment temperature and ambient humidity in the timber volume drying process chamber 14, make environment temperature rise to 55 ℃, ambient humidity reduces to 11%, and keeps this environment temperature and environmental damp condition;
F is Balance Treatment for the second time: when monitoring acquisition moisture content is 25%; End step E regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 58 ℃; Ambient humidity rises to 17.5%, and keeps this environment temperature and environmental damp condition 14 hours;
G is hyperthermic treatment for the third time: behind the completing steps F, regulate environment temperature and ambient humidity in the timber volume drying process chamber 14, make environment temperature rise to 60 ℃, ambient humidity reduces to 9%, and keeps this environment temperature and environmental damp condition;
The 4th hyperthermic treatment of H: when monitoring acquisition moisture content is 16%; End step G regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 63 ℃; Ambient humidity reduces to 7.5%, and keeps this environment temperature and environmental damp condition;
The I processing that ends: when monitoring obtains moisture content and is 10%; End step H regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 65 ℃; Ambient humidity rises to 10%, and keeps this environment temperature and environmental damp condition 16 hours;
The J processing of lowering the temperature: behind the completing steps I, regulate the environment temperature in the timber volume drying process chamber 14, make environment temperature reduce to 52 ℃, ambient humidity remains 10%, and keeps this environment temperature and environmental damp condition;
The K cooling processing: when monitoring acquisition moisture content was 8%, end step J made cooling naturally in the timber volume drying process chamber 14, and timber shifts out in timber volume drying process chamber 14 after naturally cooling to common room temperature.
Embodiment 6:
A kind of Wood drying technique is characterized in that: timber carries out the health dried after the timber volume drying is handled; Said health dried is controlled at 23 ℃ and ambient humidity and is controlled at 32% health dried chamber 1 interior 4.7 days for timber being positioned over environment temperature.
After will passing through timber after the health dried and forming the specification material through carpenter's processed; Detect the panel moisture content of specification material; The counter plate moisture content carries out the dry tack free processing first time greater than 12% specification material; Dry tack free was treated to and the specification material is positioned over environment temperature was controlled at 35 ℃ and ambient humidity and is controlled in 25% the dry tack free process chamber 7 said first time, was less than or equal to 12% until the panel moisture content and promptly finished for the first time dry tack free and handle.
To be less than or equal to the manufacturing procedure that 12% specification material directly carries out next stage through the panel moisture content that forms after carpenter's processed, perhaps be less than or equal to the manufacturing procedure that 12% specification material carries out next stage to handle the rear board moisture content through dry tack free for the first time; The manufacturing procedure of said next stage comprises that the scraped finish of successively carrying out is handled and polishing is handled, and after scraped finish is handled, before polishing is handled; The semi-finished product of handling through scraped finish are carried out the panel moisture content to be detected; When half-finished panel moisture content greater than 12% the time, earlier semi-finished product are carried out dry tack free processing second time, polish processing again; When half-finished panel moisture content is less than or equal to 12%, directly polish processing; Dry tack free was treated to and semi-finished product are positioned over environment temperature were controlled at 38 ℃ and ambient humidity and are controlled in 23% the dry tack free process chamber 7 said second time, was less than or equal to 12% until the panel moisture content and promptly finished for the second time dry tack free and handle.
Said timber volume drying processed steps is carried out as follows successively:
The A stacking is handled: the timber stacking is positioned over well in the dry timber volume drying process chamber 14, in this step or step C, starts being positioned over the monitoring of the moisture content in the timber volume drying process chamber 14;
B preliminary treatment: behind the completing steps A, the environment temperature heat temperature raising to 45 in the said timber volume drying of the steps A process chamber 14 ℃ is regulated ambient humidity to 18.5% simultaneously, kept afterwards 24 hours with 4 ℃ programming rate per hour;
C hyperthermic treatment for the first time: behind the completing steps B, regulate environment temperature and ambient humidity in the timber volume drying process chamber 14, make environment temperature rise to 48 ℃, ambient humidity reduces to 12%, and keeps this environment temperature and environmental damp condition;
D is Balance Treatment for the first time: when monitoring acquisition moisture content is 35%; End step C regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 50 ℃; Ambient humidity rises to 18%, and keeps this environment temperature and environmental damp condition 16 hours;
E hyperthermic treatment for the second time: behind the completing steps D, regulate environment temperature and ambient humidity in the timber volume drying process chamber 14, make environment temperature rise to 55 ℃, ambient humidity reduces to 11%, and keeps this environment temperature and environmental damp condition;
F is Balance Treatment for the second time: when monitoring acquisition moisture content is 25%; End step E regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 58 ℃; Ambient humidity rises to 17.5%, and keeps this environment temperature and environmental damp condition 14 hours;
G is hyperthermic treatment for the third time: behind the completing steps F, regulate environment temperature and ambient humidity in the timber volume drying process chamber 14, make environment temperature rise to 60 ℃, ambient humidity reduces to 9%, and keeps this environment temperature and environmental damp condition;
The 4th hyperthermic treatment of H: when monitoring acquisition moisture content is 16%; End step G regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 63 ℃; Ambient humidity reduces to 7.5%, and keeps this environment temperature and environmental damp condition;
The I processing that ends: when monitoring obtains moisture content and is 10%; End step H regulates environment temperature and ambient humidity in the timber volume drying process chamber 14, makes environment temperature rise to 65 ℃; Ambient humidity rises to 10%, and keeps this environment temperature and environmental damp condition 16 hours;
The J processing of lowering the temperature: behind the completing steps I, regulate the environment temperature in the timber volume drying process chamber 14, make environment temperature reduce to 52 ℃, ambient humidity remains 10%, and keeps this environment temperature and environmental damp condition;
The K cooling processing: when monitoring acquisition moisture content was 8%, end step J made cooling naturally in the timber volume drying process chamber 14, and timber shifts out in timber volume drying process chamber 14 after naturally cooling to common room temperature.
Experiment 2:
The timber of choosing the equal specification of same material is divided into experimental group 4, experimental group 5, experimental group 6 and control group 2.
The timber of experimental group 4, experimental group 5, experimental group 6 and control group 2 adopts carpenter's manufacturing procedure to produce a collection of identical furniture item simultaneously respectively, and each group is in the process of carrying out carpenter's manufacturing procedure, and except that drying of wood operation, all the other treatment steps are identical.
Experimental group 4 is carried out corresponding drying of wood operation by embodiment 4 said Wood drying techniques and is handled; Experimental group 4 is carried out corresponding drying of wood operation by embodiment 4 said Wood drying techniques and is handled; Experimental group 4 is carried out corresponding drying of wood operation by embodiment 4 said Wood drying techniques and is handled; Experimental group 4 is carried out corresponding drying of wood operation by embodiment 4 said Wood drying techniques and is handled; Control group 2 carries out corresponding drying of wood operation by the traditional timber drying process to be handled.
After furniture item completes, each batch furniture item of experimental group 4, experimental group 5 and experimental group 6, cere is even, and cere glossiness and hardness are good; Problems such as this batch furniture item of control group 2 exists cere uneven, and cere glossiness and hardness are relatively poor.
Each batch furniture item of experimental group 4, experimental group 5, experimental group 6 and control group 2 is deposited in the place 2 years of same environmental conditions, and the quality problems of strain cracking and paint flake do not appear in the furniture item of experimental group 4, experimental group 5 and experimental group 6; Tangible strain cracking and paint flake phenomenon appear in the furniture item of control group 2.