CN104697297B - A kind of high-frequency vacuum Wood drying apparatus and method - Google Patents
A kind of high-frequency vacuum Wood drying apparatus and method Download PDFInfo
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- CN104697297B CN104697297B CN201510086375.9A CN201510086375A CN104697297B CN 104697297 B CN104697297 B CN 104697297B CN 201510086375 A CN201510086375 A CN 201510086375A CN 104697297 B CN104697297 B CN 104697297B
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- 238000001035 drying Methods 0.000 title claims abstract description 66
- 239000002023 wood Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims abstract description 33
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 230000008676 import Effects 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000008234 soft water Substances 0.000 claims description 5
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 241000894007 species Species 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Drying Of Solid Materials (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The present invention supplies a kind of high-frequency vacuum Wood drying apparatus and method, including, there is control cabinet in high frequency, the radio tube for producing high frequency electric is provided with it；Material containing car, for the timber for placing negative plate, positive plate and be clipped between negative plate and positive plate；Vacuum tank, is provided with the copper strips electrically connected with the radio tube and the track slided in vacuum is filled for material containing car on its madial wall；Cooling device, it is provided with vavuum pump and the air duct connected with vacuum tank, for being vacuumized to vacuum tank, and the vapor of cooling vacuum tank discharge, wherein, the high-frequency vacuum Wood drying apparatus also include the pallet for carrying timber and the vacuum valve on the air duct of the vacuum tank and cooling device, and two through holes are provided with the pallet, when the vacuum valve is opened, to being filled with air in vacuum tank.Apparatus and method of the present invention save drying of wood time, safe and reliable and be conducive to drying of wood mass.
Description
Technical field
The present invention relates to drying of wood field, more specifically, it is related to a kind of high-frequency vacuum Wood drying apparatus and method.
Background technology
Existing high-frequency vacuum timber dryer 100, as shown in figure 1, including:There is control cabinet 110 in high frequency, set in it
It is equipped with the radio tube (not shown) for producing high frequency electric；Material containing car 120, it is placed with negative plate 121, the and of positive plate 122
The timber 123 being clipped in the middle；Vacuum tank 130, its lateral surface offers the hand hole 133 for facilitating artificial line, is set on its madial wall
It is equipped with the copper strips 131 electrically connected with the radio tube and the track 132 slided in vacuum is filled for material containing car 120；It is cold
But device 140, are provided with vavuum pump (not shown) and the air duct 141 connected with vacuum tank 130, for vacuum tank 130
Vacuumize, and the vapor that cooling vacuum tank 130 is discharged.Method using the desiccated wood of the said equipment 100 is that workman station is carrying
Timber layering is placed between the negative plate on transport support and positive plate on truck, the Wood Transportation that then will be stacked is arrived
In vacuum tank, vacuum tank is closed, start radio tube for the positive plate and negative plate that timber is clamped in centre provide high-frequency electromagnetic
Field is heated to timber, while start vavuum pump being vacuumized to vacuum tank, makes the pressure reduction in vacuum filling, so as to reduce water
Boiling point, when timber temperature not less than water boiling point when, the moisture evaporation in timber out, realizes the drying of timber, works as wood
When material moisture content reaches regulation requirement, just stop the drying of wood.
The high frequency vacuum drying device and method of prior art mainly has following shortcoming：
First, in timber drying, timber gives out a large amount of vapor, reaches the concentration of the hydrone in vacuum tank
To saturation, so that the moisture in preventing timber continues to discharge, drying time is extended.
Second, vacuum tank removes timber, it is necessary to wait this batch of timber to cool down workman completely after having dried boarding piecewise
After lower, another boarding could be stacked on material containing car, another boarding is dried, extend the time of the drying of wood,
It is unfavorable for the mass of the drying of wood, reduces the production efficiency of the drying of wood.
3rd, the dry timber of vacuum tank is at least typically 3 cubes, overlays the height of timber on material containing car more than one
Rice three, along with the height of material containing car, workman piles up very difficult, and on material containing car to stack timber extremely dangerous at station.
4th, directly be fixed to copper strips on positive plate or negative plate by screw typically by prior art, due to vacuum
Timber is loaded with tank, workman can only carry out aforesaid operations by hand hole, it is very inconvenient in the position operation away from hand hole.
The content of the invention
The present invention is made to solve above-mentioned technical problem present in prior art, its object is to provide one kind
Save drying of wood time and safe and reliable high-frequency vacuum Wood drying apparatus and method.
According to an aspect of the present invention, there is provided a kind of high-frequency vacuum Wood drying apparatus, including:High frequency is controlled
Case, is provided with the radio tube for producing high frequency electric in it；Material containing car, for placing negative plate, positive plate and being clipped in negative pole
Timber between plate and positive plate；Vacuum tank, is provided with the copper strips and use electrically connected with the radio tube on its madial wall
In the track that material containing car is slided in vacuum is filled；Cooling device, is provided with vavuum pump and the air duct connected with vacuum tank, uses
Vacuumized in vacuum tank, and the vapor that cooling vacuum tank is discharged, wherein, the high-frequency vacuum Wood drying apparatus also include
Pallet and the vacuum valve on the air duct of the vacuum tank and cooling device for carrying timber, on the pallet
Two through holes are provided with, when the vacuum valve is opened, to being filled with air in vacuum tank.
According to another aspect of the present invention, there is provided a kind of high-frequency vacuum method for drying wood, including：Timber layering is put
Put between the negative plate on pallet and positive plate, using fork truck by pallet fork to material containing car, transport in vacuum tank；Will be true
The copper strips of empty pot sidewall is connected respectively to positive plate and negative plate, closes vacuum tank, starts radio tube, in positive plate and negative
Electromagnetic field of high frequency is produced between pole plate, timber is heated；Judge the pressure in vacuum tank whether in prescribed limit：If pressure
It is strong in prescribed limit, return above-mentioned the step of heated to timber；If pressure is not in prescribed limit, start vavuum pump pair
Vacuum tank is vacuumized；Judge whether pressure reaches the lower limit of prescribed limit；If pressure does not reach the lower limit of prescribed limit, then very
Empty pump continues to vacuumize to vacuum tank；If pressure reaches the lower limit of prescribed limit, stop vavuum pump, maintain the first pre- timing
Between, vacuum valve is then opened, to being filled with air in vacuum tank, wherein, first scheduled time was a setting value, existing according to technique
Field determines；Judge that pressure reaches the upper limit of prescribed limit；If pressure is not up to the upper limit of prescribed limit, then at vacuum valve continuation
Air is sucked in open mode；If pressure reaches the upper limit of prescribed limit, vacuum valve is closed, maintained for second scheduled time, so
Restarting vavuum pump is vacuumized afterwards, wherein, second scheduled time was a setting value, according to the species and vacuum of desiccated wood
The cubic number of tank is set；Repeat the above steps, until the moisture content of timber reaches requirement, terminate drying process, open true
, be placed into outside material containing car for pallet and dried timber with fork truck by slack tank, and directly fork is arrived the timber that another batch is piled up
It is dried on material containing car.
High-frequency vacuum Wood drying apparatus of the present invention and method, by the air duct in cooling device and vacuum tank
Upper setting vacuum valve, to air is filled with vacuum filling in timber drying, raises the pressure in vacuum tank, promotes vacuum
Pump is vacuumized to vacuum tank, extracts the vapor in vacuum tank out, prevents the hydrone concentration in vacuum tank from reaching saturation, is prevented
The possibility that moisture in timber can not be discharged, accelerates the time of the drying of wood.In addition, device and method of the present invention is logical
Tray stacking timber is crossed, using fork truck loading or unloading pallet, the lay day of timber is reduced, high frequency vacuum drying device is improve
Utilization rate, is conducive to the mass of the drying of wood, reduces cost and reduces the artificial danger for piling up timber.
Brief description of the drawings
By reference to the explanation below in conjunction with accompanying drawing and the content of claims, other purposes of the invention and result will
It is more clearly understood that and should be readily appreciated that.In the accompanying drawings：
Fig. 1 is the schematic diagram of prior art high-frequency vacuum Wood drying apparatus；
Fig. 2 is the schematic diagram of high-frequency vacuum Wood drying apparatus of the present invention；
Fig. 3 a are the top views of pallet in high-frequency vacuum Wood drying apparatus of the present invention.
Fig. 3 b are the front views of pallet in high-frequency vacuum Wood drying apparatus of the present invention；
Fig. 4 a are the side views of the clamp in high-frequency vacuum Wood drying apparatus of the present invention；
Fig. 4 b are the front views of the clamp in high-frequency vacuum Wood drying apparatus of the present invention；
Fig. 4 c are clamp and positive plate or the connection diagram of negative plate in high-frequency vacuum Wood drying apparatus of the present invention；
Fig. 5 is the schematic diagram of cooling device in high-frequency vacuum Wood drying apparatus of the present invention；
Fig. 6 is the flow chart of high-frequency vacuum method for drying wood of the present invention；
Identical label indicates similar or corresponding feature or function in all of the figs.
Specific embodiment
In the following description, for purposes of illustration, in order to provide the comprehensive understanding to one or more embodiments, explain
Many details are stated.It may be evident, however, that these embodiments can also be realized in the case of without these details.
In other examples, for the ease of describing one or more embodiments, known structure and equipment show in block form an.
Come to be described in detail each embodiment of the invention below with reference to accompanying drawings.
Fig. 2 is the schematic diagram of high-frequency vacuum Wood drying apparatus of the present invention, as illustrated, drying device of the present invention
Also include in addition to 200 part in including prior art drying device 100：
Vacuum valve 210, is placed on the air duct 251 that vacuum tank is connected with cooling device, is inhaled when vacuum valve 210 is opened
Enter the air in the external world, vacuum tank is entered by air duct 251, reduce the vacuum in vacuum tank, make timber drying
A large amount of vapor of middle generation are discharged in time, prevent the moisture discharge that hydrone concentration saturation suppresses in timber, and extension is dry
The phenomenon of dry time；
Pallet 220, for carrying timber, its concrete structure as shown in Figure 3 a and Figure 3 b shows, two is provided with the pallet 220
Individual through hole 221, the length L of pallet 220 is not more than 2 meters, because the length for generally requiring desiccated wood is not more than 2 meters, pallet
Highly (height of through hole) is not less than the thickness of fork truck arm 300, and the width of through hole is not less than the width of fork truck arm 300, and two lead to
Centre-to-centre spacing between hole is less than two maximums distance between centers of fork truck arm, for example with 3 tons of fork trucks of model of board with joint efforts, fork truck arm
Width is 120mm, and thickness is 45mm, and two maximums distance between centers of fork truck arm are 980mm, and the height of pallet and through hole is in 80mm models
In enclosing, the width of through hole is 140mm, and two centre-to-centre spacing of through hole are in 900mm.
Preferably, prevent pallet from corroding and increasing the bearing capacity of pallet under hygrothermal environment, the pallet uses stainless steel
Material.
Furthermore it is preferred that the stainless steel material thickness is in 2-3mm.
Furthermore it is preferred that the moisture for facilitating timber to give out spills, the pallet be welded using stainless steel tube and
The one side for placing timber is welded into palisading type.
Clamp 230, one end is fixedly connected on copper strips, and the other end clamps positive plate or negative plate, realizes vacuum electronic
The electrical connection of pipe and positive plate or negative plate, as shown in Fig. 4 a, 4b and 4c, clamp 230 includes train wheel bridge 231 to its concrete structure
With lower plate 232, one end of train wheel bridge 231 and lower plate 232 is fastened by screw-nut, and along the screw vertical direction mirror
Face is symmetrical, and train wheel bridge 231 and lower plate 232 are comprising integrally formed Part I a and Part II b, the one of Part I a
End is provided through the through hole of screw, and in obtuse angle, the other end of Part II b is in turning up for one end of the other end and Part II b
The turn up angle of arc tips of the Part II of arc, train wheel bridge and lower plate is acute angle, it is preferable that the obtuse angle 150 °-
In the range of 170 °, the acute angle is in the range of 30 ° -50 °.
Copper strips is connected to when on positive plate 121 or negative plate 122, only need to hold clamp 230 to positive plate 121 (or
Negative plate 122) side push-in, pole plate is clipped between train wheel bridge 231 and lower plate 232, as illustrated in fig. 4 c.Preferably, card is prevented
Son 230 corrodes under hygrothermal environment, and the clamp uses stainless steel material, and material thickness is in 0.5-1mm.
Furthermore it is preferred that preventing vacuum top tank structure from corroding under hygrothermal environment, have stainless in the inwall rolling of vacuum tank
Steel, the thickness for rolling stainless steel is 1-2mm.
According to another embodiment of the present invention, in order to accelerate the drying process of timber, high frequency electric is increased, that is, improves vacuum
The power of electron tube, when using the radio tube for being more than 50KW, is cooled down using conventional air cooling way to electron tube,
Cooling effectiveness is low, does not reach cooling effect, reduces the life-span of radio tube, so to high-frequency vacuum electron tube using water-cooled
Mode, as shown in figure 5, high-frequency vacuum Wood drying apparatus 200 of the present invention include that electron tube water-cooling apparatus 240, vacuum tank is cold
But device, cooling tower 260.
Electron tube water-cooling apparatus 240 includes water jacket 241 and water jacket the water inlet connection on radio tube
The softened water pump 244 and soft water of the radiator coil tube 245 and the connection of radiator coil tube 245 of import water pipe 246 and the connection of import water pipe 246
The outlet water pipe 242 of the delivery port connection of case 243 and softened water tank 243 and water jacket 241, specifically, radio tube produces a large amount of
Heat water heating in water jacket 241 is entered softened water tank 243 by outlet water pipe 242 by its delivery port, then by soft water
Pump 244 enters radiator coil tube 245, and water is entered by import water pipe 246 by the outlet of radiator coil tube 245 after being circulated cooling
The water inlet of set is cooled down to radio tube.
Preferably, import water pipe 246 and outlet water pipe 242 have certain length, play a part of step-down, it is preferable that
Above-mentioned length is in the range of 7-8m.
Vacuum tank cooling device includes and the tank connected air duct 251 of vacuum, radiator coil tube 252, gas-liquid separator 253
With vavuum pump 254, the vapours in vacuum tank enters radiator coil tube 252 by air duct 251, cold by radiator coil tube 252
But gas-liquid separator 253 is entered afterwards, the gas after gas-liquid separation drains into air by vavuum pump 254, and the liquid after separation is drained into
The water collect tank (not shown) of cooling tower 260, while the cooling water in vacuum tank also flows into water collect tank, the water in water collect tank completely after from
Dynamic discharge.
Preferably, it is vacuum in water collect tank, is conducive to water inlet and outlet.
Cooling tower 260 includes exhaust blower 261, water fender 262, shower 263, storage tank 264 successively from the top to the bottom
With water collect tank (not shown), spray pump 265 is additionally included, can be arranged in cooling tower to be arranged on outside cooling tower
Side, cooling tower 260 is for the radiator coil tube 245 in the electron tube water-cooling apparatus 240 of the lower section of shower 263 and very
The radiator coil tube 252 of slack tank cooling device carries out spray water cooling and air-cooled, and specifically, liquid and vacuum after gas-liquid separation are filled
Interior cooling water enters water collect tank, and spray pump 265 extracts the cold water of storage tank 264 out, all the way supply vacuum pump 254, Ling Yilu
Supply shower 263, shower 263 sprays cold water to radiator coil tube 245 and 252, and exhaust blower 261 is by cooling tower 260
Air inlet (not shown) introduces air and the water by the heating of radiator coil tube 245 and 252 is cooled down, and water fender 262 prevents cold
But the shower water of radiator coil tube flies out upwards.
Fig. 6 is the flow chart of high-frequency vacuum method for drying wood of the present invention, as illustrated, the drying means, including：
First, in step S600, by timber layering be placed on negative plate 122 and positive plate 121 on pallet 220 it
Between, using fork truck by pallet fork to material containing car, transport in vacuum tank, wherein, it is described that timber layering is placed on pallet
Positive plate and negative plate between method include：Pallet is placed on ground, negative plate is placed on pallet, in negative plate
On stack timber, place positive plate above timber, repeat said process until all timber overlay positive plate and negative pole
Between plate；Two fork truck bars of fork truck are inserted into two through holes of above-mentioned pallet, the support of timber will be stacked using fork truck
Disk is placed on the transport support, and that has saved timber piles up the time, for example, in the prior art in 10 cubic metres of vacuum tank
In to pile up sheet material be typically first by 50mm*200mm sheet materials with being sawed into 4-5mm*200mm thickness sheet materials；The material very important person for cutting
Work slices superimposed code is good, will be about yard 1300mm left and right high, and want the pile of code 4；Timber is transported to vacuum tank scene；By artificial
By timber slices stacking on material containing car, as requested, every yard to 300mm to spread a 6000mm*1300mm aluminium sheet as
Battery lead plate, totally 4 layers of timber.Finally enter tank to be dried, it is necessary to pile up the time of sheet material more than 7 hours, and the present invention is first
By 50mm*200mm plates village with being sawed into 4-5mm*200mm thickness sheet materials；The material direct code for cutting is put on pallet per 300mm
One block of 1300mm*2000mm aluminium sheet, it is same to want code 1300mm left and right high, and want the pile of code 4；Pallet is forked with fork truck directly to transport
Onto this equipment stack pallet；Treat that material is put together, be attached all aluminium sheets with above-mentioned clamp, finally enter tank drying.By
Blank-code material-haul-code material is reduced to blank-code fortune-charging, such code material, it is necessary to the time for piling up timber is less than 2 hours.
Need dry timber to be placed into after positive slack tank, in step S610, the copper strips of vacuum pot sidewall is connected respectively
Positive plate and negative plate are connected to, vacuum tank is closed, start radio tube, timber is heated, wherein, it is described by vacuum tank
The copper strips of side wall is connected respectively to positive plate and the method for negative plate to be included, one end 230A of train wheel bridge 231 and lower plate 232 is inserted
Enter copper strips, and fastened upper lower plate with screw-nut, other end 230B is then pushed into negative plate and positive plate.
Then, in step S620, judge the pressure in vacuum tank whether in prescribed limit, above-mentioned prescribed limit according to
The type and quantity of dry timber are needed to determine, with absolute zero-pressure as starting point, typically in the range of 0.02-0.04Mpa.
If pressure is in above-mentioned prescribed limit, return to step S610.
If pressure is not in above-mentioned prescribed limit, in step S630, starts vavuum pump and vacuum tank is vacuumized.
Then, in step S640, judge whether pressure reaches the lower limit of above-mentioned prescribed limit.
If pressure does not reach the lower limit of above-mentioned prescribed limit, then return to step S630.
If pressure reaches the lower limit of above range, in step S650, stop vavuum pump, maintained for first scheduled time,
Then vacuum valve is opened, to being filled with air in vacuum tank, wherein, first scheduled time was a setting value, according to technique scene
It is determined that, it is preferable that first scheduled time is in the range of 1-30 minutes.
Then, in step S660, judge that pressure reaches the upper limit of above range.
If pressure is not up to the upper limit of prescribed limit, then return to step S650.
If pressure reaches the upper limit of prescribed limit, in step S670, vacuum valve is closed, maintained for second scheduled time,
Then restarting vavuum pump is vacuumized, wherein, second scheduled time was a setting value, the species according to desiccated wood and true
The cubic number of slack tank is set, it is preferable that second scheduled time is in the range of 10-30 minutes.
Finally, in step S680, repeat the above steps, until the moisture content of timber reaches requirement, terminate drying process,
Vacuum tank is opened, pallet and dried timber are placed into outside material containing car with fork truck, the timber that another batch is piled up is straight
Fork is connect to being dried on material containing car, wherein, the water content requirement of the drying of wood is according to the species of timber, purposes and scene
Temperature determination, general 10% or so.The above method of the present invention is withouted waiting for dry timber after dry timber is cooled down
Unload carries out piling up and drying for next group timber again, timber is piled up respectively on two sets of pallets, real-time dry a set of, tank
Get the raw materials ready outward a set of, when the drying of wood of a set of pallet is good, pallet is directly pitched out with fork truck, put another pallet timber, compared with
The time of past loading and unloading can at least reduce one day, greatly save the drying of wood time, improve drying efficiency, be conducive to wood
The dry mass of material.
Preferably, also include in step S610：Vacuum tank is closed, electron tube soft water is started while starting radio tube
The soft water that pumping takes softened water tank carries out water cooling to the radio tube.
The above-mentioned method for drying wood of the present invention compared with the drying means of prior art, using vacuum valve and vavuum pump pulsewidth
Pressure in modulation vacuum tank, had both caused that the boiling point of water was not higher than drying of wood temperature, again so that what is produced in drying process is big
Amount vapor discharges vacuum tank in time, the phenomenon of hydrone concentration saturation in vacuum tank is prevented, so that the drying of wood is fast
Degree at least improves 10-15% and is not in the insufficient defect of the drying of wood.
Although content disclosed above shows exemplary embodiment of the invention, it should be noted that without departing substantially from power
On the premise of profit requires the scope of the present invention for limiting, may be many modifications and change.It is real according to invention described herein
Function, step and/or the action for applying the claim to a method of example are not required to be performed with any particular order.Although additionally, the present invention
Element can describe or require in individual form, be unless explicitly limited odd number it is also contemplated that multiple.
Claims (9)
1. a kind of high-frequency vacuum Wood drying apparatus, including:
There is control cabinet in high frequency, the radio tube for producing high frequency electric is provided with it；
Material containing car, for the timber for placing negative plate, positive plate and be clipped between negative plate and positive plate；
Vacuum tank, is provided with the copper strips that is electrically connected with the radio tube and for material containing car in vacuum is filled on its madial wall
The track of slip, described copper strips one end is electrically connected with the radio tube, and the other end of the copper strips is provided with for clamping
The clamp of positive plate or negative plate, the clamp includes train wheel bridge and lower plate, and one end of train wheel bridge and lower plate passes through spiral shell
Nail nut is fastened, and symmetrical along the screw vertical direction minute surface, and train wheel bridge and lower plate are comprising integrally formed first
Point and Part II, one end of Part I is provided with through hole, one end of the other end and Part II in obtuse angle, Part II
The other end is in the arc that turns up；
Cooling device, is provided with vavuum pump and the air duct connected with vacuum tank, for being vacuumized to vacuum tank, and cools down true
The vapor of slack tank discharge,
Wherein, the high-frequency vacuum Wood drying apparatus also include for carry timber pallet and installed in the vacuum tank with
Vacuum valve on the air duct of cooling device, is provided with two through holes on the pallet, wherein, using vacuum valve and vavuum pump
Pressure in pulsewidth modulation vacuum tank, the vavuum pump is vacuumized to vacuum tank so that the pressure in vacuum tank reaches regulation model
When enclosing lower limit, the vavuum pump is closed, maintained for first scheduled time, then open the vacuum valve, to being filled with sky in vacuum tank
Gas, when the pressure in the vacuum tank reaches the prescribed limit upper limit, closes vacuum valve, maintains for second scheduled time, so
Restarting vavuum pump is vacuumized afterwards.
2. drying device according to claim 1, wherein, the height and width of each through hole of the pallet are more than fork truck
The thickness and width of arm so that fork truck arm is inserted in the through hole.
3. drying device according to claim 1, wherein, the obtuse angle is in the range of 150 ° -170 °.
4. drying device according to claim 1, wherein, the Part II of the train wheel bridge and lower plate turns up arc tips
Angle in the range of 30 ° -50 °.
5. drying device according to claim 1, wherein, the cooling device also includes electron tube water-cooling apparatus, bag
Include the import water pipe and the heat dissipation plate of import water pipe connection of water jacket and water jacket the water inlet connection on radio tube
Pipe and the softened water pump and softened water tank and softened water tank and the outlet water pipe of water jacket delivery port connection of radiator coil tube connection.
6. drying device according to claim 1, wherein, the inwall rolling of the vacuum tank has stainless steel.
7. a kind of high-frequency vacuum method for drying wood, including：
Timber layering is placed between the negative plate on pallet and positive plate, using fork truck by pallet fork to material containing car, is transported
It is defeated in vacuum tank；
The copper strips of vacuum pot sidewall is connected respectively to positive plate and negative plate, vacuum tank is closed, starts radio tube, just
Electromagnetic field of high frequency is produced between pole plate and negative plate, timber is heated；
Judge the pressure in vacuum tank whether in prescribed limit；
If pressure is in prescribed limit, return above-mentioned the step of heated to timber；
If pressure is not in prescribed limit, starts vavuum pump and vacuum tank is vacuumized；
Judge whether pressure reaches the lower limit of prescribed limit；
If pressure does not reach the lower limit of prescribed limit, then vavuum pump continues to vacuumize to vacuum tank；
If pressure reaches the lower limit of prescribed limit, stop vavuum pump, maintained for first scheduled time, then open vacuum valve, to
Air is filled with vacuum tank, wherein, first scheduled time was a setting value, was determined according to technique scene；
Judge that pressure reaches the upper limit of prescribed limit；
If pressure is not up to the upper limit of prescribed limit, then vacuum valve keeps open mode suction air；
If pressure reaches the upper limit of prescribed limit, vacuum valve is closed, maintained for second scheduled time, then restart vavuum pump
Vacuumize, wherein, second scheduled time was a setting value, and the cubic number of species and vacuum tank according to desiccated wood is set
It is fixed；
Repeat the above steps, until the moisture content of timber reaches requirement, terminate drying process, open vacuum tank, will be held in the palm with fork truck
Disk and dried timber are placed into outside material containing car, and the timber that another batch is piled up directly is pitched onto material containing car and done
It is dry.
8. drying means according to claim 7, wherein, it is described that timber layering is placed on positive plate on pallet and negative
Method between pole plate includes：
Pallet is placed on ground, negative plate is placed on pallet, timber is stacked on negative plate, placed above timber
Positive plate, repeats said process until all timber are overlayed between positive plate and negative plate；
Two fork truck arms of fork truck are inserted into two through holes of above-mentioned pallet, the pallet that will stack timber using fork truck is put
Put on the material containing car.
9. drying means according to claim 7, wherein, the closing vacuum tank is opened while starting radio tube
The soft water that dynamic electron tube circulating pump draws softened water tank carries out water cooling to radio tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086375.9A CN104697297B (en) | 2015-02-16 | 2015-02-16 | A kind of high-frequency vacuum Wood drying apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086375.9A CN104697297B (en) | 2015-02-16 | 2015-02-16 | A kind of high-frequency vacuum Wood drying apparatus and method |
Publications (2)
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| CN105387691B (en) * | 2015-11-24 | 2017-08-25 | 南京林业大学 | A kind of drying means of control wood shrinkage |
| CN106938486B (en) * | 2017-03-20 | 2018-10-02 | 张爱冬 | A kind of processing method of redwood timber |
| CN107940959A (en) * | 2017-11-20 | 2018-04-20 | 姚松年 | A kind of timber dryer and drying means |
| CN108721927B (en) * | 2018-07-10 | 2024-01-09 | 江门市东江环保技术有限公司 | Vacuum drying recovery system |
| CN110513966B (en) * | 2019-04-17 | 2021-01-26 | 宜华生活科技股份有限公司 | Wood dehydration, drying and carbonization integrated treatment equipment and treatment method thereof |
| CN112984960A (en) * | 2021-04-13 | 2021-06-18 | 东北林业大学 | Timber tree dish high frequency drying device |
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| JPS5477361A (en) * | 1977-11-30 | 1979-06-20 | Matsushita Electric Works Ltd | Pressure container for processing wood |
| JP2779431B2 (en) * | 1990-03-14 | 1998-07-23 | 株式会社ニツセン | High frequency vacuum drying equipment |
| CN2436899Y (en) * | 2000-08-21 | 2001-06-27 | 边新虎 | Timber vacuum dry box |
| CN201266002Y (en) * | 2008-06-24 | 2009-07-01 | 石家庄开发区纪元电气有限公司 | High-frequency vacuum timber dryer |
| CN201575662U (en) * | 2009-10-20 | 2010-09-08 | 石家庄开发区纪元电气有限公司 | High-frequency vacuum wood drying and heating system |
| CN102353238B (en) * | 2011-08-01 | 2013-07-24 | 上海海事大学 | Intermittent type vacuum microwave drying device and method for processing core material of vacuum heat insulation plate by using intermittent type vacuum microwave drying device |
| KR101342973B1 (en) * | 2012-11-09 | 2013-12-18 | 문중묵 | High frequency wave vacuum drying method and apparatus of heavy timber for a wooden house |
| CN203163424U (en) * | 2013-01-18 | 2013-08-28 | 临沂优优木业有限公司 | Vacuum drying and balancing equipment for wood boards |
| CN203518434U (en) * | 2013-09-24 | 2014-04-02 | 上海镧泰微波设备制造有限公司 | High-frequency vacuum timber drying device |
| CN204115420U (en) * | 2014-08-27 | 2015-01-21 | 石家庄灿高高频机械有限公司 | A kind of timber dryer |
| CN104329910B (en) * | 2014-10-23 | 2016-08-24 | 河北华氏纪元高频设备有限公司 | A kind of high-frequency vacuum method for drying wood and equipment thereof |
| CN204678807U (en) * | 2015-02-16 | 2015-09-30 | 河北华氏纪元高频设备有限公司 | A kind of high-frequency vacuum Wood drying apparatus |
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