CN104697297A - High-frequency vacuum wood drying device and method - Google Patents
High-frequency vacuum wood drying device and method Download PDFInfo
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- CN104697297A CN104697297A CN201510086375.9A CN201510086375A CN104697297A CN 104697297 A CN104697297 A CN 104697297A CN 201510086375 A CN201510086375 A CN 201510086375A CN 104697297 A CN104697297 A CN 104697297A
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- 238000001035 drying Methods 0.000 title claims abstract description 71
- 239000002023 wood Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 39
- 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 54
- 239000000463 material Substances 0.000 claims description 36
- 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
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 239000008234 soft water Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 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
- 239000007921 spray Substances 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 230000007547 defect 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
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001629 suppression Effects 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 invention provides a high-frequency vacuum wood drying device and a method. The high-frequency vacuum wood drying device comprises a high-frequency generation controlling box, a loading vehicle, a vacuum tank and a cooling device, wherein a vacuum electronic pipe for generating a high-frequency current is arranged in the high-frequency generation controlling box; the loading vehicle is used for allowing a negative plate, a positive plate and wood clamped between the negative plate and the positive plate to be placed on; a copper strip electrically connected with the vacuum electronic pipe and a track for allowing the loading vehicle to slide in the vacuum tank are arranged on the inner side wall of the vacuum tank; the cooling device is provided with a vacuum pump and an air passage communicated with the vacuum tank and used for vacuumizing the vacuum tank and cooling vapor exhausted from the vacuum tank; the high-frequency vacuum wood drying device further comprises trays for bearing wood and a vacuum valve mounted on the air passage of the vacuum tank and the cooling device, two through holes are formed in each tray, and when the vacuum valve is opened, air is charged into the vacuum tank. According to the device and the method disclosed by the invention, the wood drying time is reduced, the device and the method are safe and reliable, and drying wood in batches is facilitated.
Description
Technical field
The present invention relates to drying of wood field, more specifically, relate 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, comprising: high frequency generation control cabinet 110, is provided with the radio tube (not shown) producing high frequency electric in it; Material containing car 120, its timber 123 being placed with negative plate 121, positive plate 122 and being clipped in the middle; Vacuum tank 130, its lateral surface offers the hand hole 133 facilitating artificial line, its madial wall is provided with the copper strips 131 be electrically connected with described radio tube and the track 132 slided in vacuum is filled with for material containing car 120; Cooling device 140, the air duct 141 being provided with vavuum pump (not shown) and being communicated with vacuum tank 120, for vacuumizing vacuum tank 120, and the steam that cooling vacuum tank 120 is discharged.The method of the said equipment 100 desiccated wood is utilized to be, timber layering is placed between negative plate on transport support and positive plate by worker stands on material containing car, then by the Wood Transportation that stacks in vacuum tank, close vacuum tank, start radio tube and clamp the positive plate of timber for centre and negative plate provides electromagnetic field of high frequency to heat timber, start vavuum pump to vacuumize vacuum tank simultaneously, pressure in vacuum filling is reduced, thus reduce the boiling point of water, when the temperature of timber is not less than the boiling point of water, moisture evaporation in timber out, realize the drying of timber, when moisture content reaches regulation requirement, just stop the drying of wood.
The high frequency vacuum drying device and method of prior art mainly contains following shortcoming:
The first, in timber drying, timber gives out a large amount of steam, and the concentration of the hydrone in vacuum tank is reached capacity, thus stops the moisture in timber to continue to discharge, and extends drying time.
Second, after the dry complete boarding of vacuum tank, need to wait for that this batch of timber cools after timber moves down by workman piecewise completely, another boarding could be stacked on material containing car, drying is carried out to another boarding, extend the time of the drying of wood, be unfavorable for the mass of the drying of wood, reduce the production efficiency of the drying of wood.
3rd, the timber of vacuum tank drying is generally minimum is 3 cubes, and the height overlaying the timber on material containing car, more than one meter three, adds the height of material containing car, and workman piles up very difficult, and stands in that material containing car to stack timber very dangerous.
4th, copper strips is generally directly fixed on positive plate or negative plate by screw by prior art, and owing to having filled timber in vacuum tank, workman can only carry out aforesaid operations by hand hole, very inconvenient in the position operation away from hand hole.
Summary of the invention
The present invention is to solve the above-mentioned technical problem that exists in prior art and make, its object is to provide a kind of and save the drying of wood time and safe and reliable high-frequency vacuum Wood drying apparatus and method.
According to an aspect of the present invention, a kind of high-frequency vacuum Wood drying apparatus is provided, comprises: high frequency generation control cabinet, in it, be provided with the radio tube producing high frequency electric; Material containing car, for the timber placing negative plate, positive plate and be clipped between negative plate and positive plate; Vacuum tank, its madial wall is provided with the copper strips be electrically connected with described radio tube and the track slided in vacuum is filled with for material containing car; Cooling device, the air duct being provided with vavuum pump and being communicated with vacuum tank, for vacuumizing vacuum tank, and the steam that cooling vacuum tank is discharged, wherein, the vacuum valve that described high-frequency vacuum Wood drying apparatus also comprises the pallet for carrying timber and is arranged on the air duct of described vacuum tank and cooling device, described pallet is provided with two through holes, when described vacuum valve is opened, in vacuum tank, be filled with air.
According to another aspect of the present invention, a kind of high-frequency vacuum method for drying wood is provided, comprises: timber layering is placed between negative plate on pallet and positive plate, utilize fork truck by pallet fork on material containing car, be transported in vacuum tank; The copper strips of vacuum tank sidewall is connected respectively to positive plate and negative plate, closes vacuum tank, start radio tube, between positive plate and negative plate, produce electromagnetic field of high frequency, timber is heated; Judge pressure in vacuum tank whether in prescribed limit: if pressure is in prescribed limit, return the above-mentioned step that timber is heated; If pressure is not in prescribed limit, starts vavuum pump and vacuum tank is vacuumized; Judge whether pressure arrives the lower limit of prescribed limit; If pressure does not arrive the lower limit of prescribed limit, then vavuum pump continues to vacuumize to vacuum tank; If pressure arrives the lower limit of prescribed limit, stop vavuum pump, maintained for first scheduled time, then open vacuum valve, in vacuum tank, be filled with air, wherein, first scheduled time was a setting value, determined according to technique scene; Judge that pressure arrives the upper limit of prescribed limit; If pressure does not reach the upper limit of prescribed limit, then vacuum pneumatic valve keeps open mode and sucks air; If pressure arrives the upper limit of prescribed limit, close vacuum pneumatic valve, maintained for second scheduled time, then restart vacuum pump evacuation, wherein, second scheduled time was a setting value, set according to the kind of desiccated wood and the cubic number of vacuum tank; Repeat above-mentioned steps, until the moisture content of timber reaches requirement, terminate dry run, open vacuum tank, be placed into outside material containing car with fork truck by pallet and dried timber, the timber piled up by another batch is directly pitched on material containing car and is carried out drying.
High-frequency vacuum Wood drying apparatus of the present invention and method, by arranging vacuum valve on the air duct of cooling device and vacuum tank, in vacuum is filled with, air is filled with in timber drying, pressure in vacuum tank is raised, promote that vavuum pump vacuumizes vacuum tank, extract the steam in vacuum tank out, prevent the hydrone concentration in vacuum tank from reaching capacity, stop the possibility that the moisture in timber can not be discharged, accelerate the time of the drying of wood.In addition, device and method of the present invention, by tray stacking timber, adopts fork truck loading or unloading pallet, decrease the lay day of timber, improve the utilization rate of high frequency vacuum drying device, be conducive to the mass of the drying of wood, reduce cost and reduce the danger of manually piling up timber.
Accompanying drawing explanation
By reference to the content below in conjunction with the description of the drawings and claims, other object of the present invention and result will more be understood 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 is the top view of pallet in high-frequency vacuum Wood drying apparatus of the present invention.
Fig. 3 b is the front view of pallet in high-frequency vacuum Wood drying apparatus of the present invention;
Fig. 4 a is the side view of the clamp in high-frequency vacuum Wood drying apparatus of the present invention;
Fig. 4 b is the front view of the clamp in high-frequency vacuum Wood drying apparatus of the present invention;
Fig. 4 c is the connection diagram of clamp in high-frequency vacuum Wood drying apparatus of the present invention and positive plate or negative plate;
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;
Label identical in all of the figs indicates similar or corresponding feature or function.
Detailed description of the invention
In the following description, for purposes of illustration, in order to provide the complete understanding to one or more embodiment, many details have been set forth.But, clearly, also these embodiments can be realized when there is no these details.In other example, one or more embodiment for convenience of description, known structure and equipment illustrate in block form an.
Come below with reference to accompanying drawings to be described in detail each embodiment according to the present invention.
Fig. 2 is the schematic diagram of high-frequency vacuum Wood drying apparatus of the present invention, and as shown in the figure, drying device 200 of the present invention also comprises except comprising the parts in prior art drying device 100:
Vacuum valve 210, be placed on air duct 251 that vacuum tank is communicated with cooling device, extraneous air is sucked when vacuum valve 210 is opened, vacuum tank is entered by air duct 251, reduce the vacuum in vacuum tank, the a large amount of steam produced in timber drying are discharged in time, and the moisture prevented in the saturated suppression timber of hydrone concentration is discharged, and extends the phenomenon of drying time;
Pallet 220, for carrying timber, its concrete structure as shown in Figure 3 a and Figure 3 b shows, described pallet 220 is provided with two through holes 221, the length L of pallet 220 is not more than 2 meters, because generally need the length of desiccated wood to be not more than 2 meters, the height (height of through hole) of pallet is not less than the thickness of fork truck arm 300, the width of through hole is not less than the width of fork truck arm 300, centre-to-centre spacing between two through holes is less than the maximum distance between centers of two fork truck arm, such as adopt the fork truck of board 3 tons of models of making a concerted effort, the width of fork truck arm is 120mm, thickness is 45mm, the maximum distance between centers of two fork truck arm is 980mm, the height of pallet and through hole is within the scope of 80mm, the width of through hole is 140mm, the centre-to-centre spacing of two through holes is at 900mm.
Preferably, prevent pallet from corroding under hygrothermal environment and increase the bearing capacity of pallet, described pallet adopts stainless steel material.
In addition, preferably, described stainless steel material thickness is at 2-3mm.
In addition, preferably, the moisture facilitating timber to give out spills, and described pallet adopts stainless steel tube to be welded and is welded into palisading type in the one side of placing timber.
Clamp 230, one end is fixedly connected on copper strips, other end clamping positive plate or negative plate, realize the electrical connection of radio tube and positive plate or negative plate, its concrete structure is as Fig. 4 a, shown in 4b and 4c, clamp 230 comprises train wheel bridge 231 and lower plate 232, one end of train wheel bridge 231 and lower plate 232 is tightened up by screw-nut, and along described screw vertical direction Mirror Symmetry, train wheel bridge 231 and lower plate 232 all comprise the Part I a and Part II b that are integrally formed, one end of Part I a is provided through the through hole of screw, one end of the other end and Part II b in obtuse angle, the other end of Part II b is in the arc that turns up, the turn up angle of arc tips of the Part II of train wheel bridge and lower plate is acute angle, preferably, described obtuse angle is within the scope of 150 °-170 °, described acute angle is within the scope of 30 °-50 °.
When copper ribbon continuous being received on positive plate 121 or negative plate 122, only need hold clamp 230 and enter to positive plate 121 (or negative plate 122) thruster, pole plate is clipped between train wheel bridge 231 and lower plate 232, as illustrated in fig. 4 c.Preferably, prevent clamp 230 from corroding under hygrothermal environment, described clamp adopts stainless steel material, and material thickness is at 0.5-1mm.
In addition, preferably, prevent vacuum tank inwall from corroding under hygrothermal environment, have stainless steel in the inwall rolling of vacuum tank, the stainless thickness of rolling is 1-2mm.
According to another embodiment of the present invention, in order to accelerate the dry run of timber, strengthen high frequency electric, namely the power of radio tube is improved, when employing is greater than the radio tube of 50KW, conventional air cooling way is utilized to cool electron tube, cooling effectiveness is low, do not reach cooling effect, reduce the life-span of radio tube, so adopt the mode of water-cooled to high-frequency vacuum electron tube, as shown in Figure 5, high-frequency vacuum Wood drying apparatus 200 of the present invention comprises electron tube water-cooling apparatus 240, vacuum tank cooling device 250, cooling tower 260.
Electron tube water-cooling apparatus 240 comprises the water jacket 241 be arranged on radio tube, the import water pipe 246 be connected with water jacket water inlet 241b, the radiator coil tube 245 be connected with import water pipe 246, the softened water pump 244 be connected with radiator coil tube 245 and softened water tank 243, the outlet water pipe 242 be connected with the delivery port 241a of softened water tank 243 and water jacket 241, particularly, radio tube produces a large amount of heat makes the water heating in water jacket 241 enter softened water tank 243 by its delivery port 241a through outlet water pipe 242, then radiator coil tube 245 is entered by softened water pump 244, the water inlet 241b entering water jacket by the outlet of radiator coil tube 245 through import water pipe 246 after carrying out circulating cooling cools radio tube.
Preferably, import water pipe 246 and outlet water pipe 242 have certain length, and play the effect of step-down, preferably, above-mentioned length is within the scope of 7-8m.
Vacuum tank cooling device 250 comprises the tank connected air duct 251 with vacuum, radiator coil tube 252, gas-liquid separator 253 and vavuum pump 254, vapours in vacuum tank enters radiator coil tube 252 through air duct 251, entered after radiator coil tube 252 cools and entered gas-liquid separator 253, gas after gas-liquid separation drains into air through vavuum pump 254, liquid after separation drains into the water collect tank (not shown) of cooling tower 260, cooling water simultaneously in vacuum tank also flows into water collect tank 266, and the water in water collect tank is completely rear discharges automatically.
Preferably, be vacuum in water collect tank, be conducive to water inlet and outlet.
Cooling tower 260 comprises exhaust blower 261 from the top to the bottom successively, water fender 262, shower 263, storage tank 264 and water collect tank (not shown), also comprise spray pump 265 in addition, can be arranged in cooling tower and also can be arranged on outside cooling tower, cooling tower 260 for the radiator coil tube 252 of the radiator coil tube 245 in the electron tube water-cooling apparatus 240 be arranged on below shower 263 and vacuum tank cooling device is carried out shower water cooling and air-cooled, particularly, liquid after gas-liquid separation and vacuum fill with in cooling water enter water collect tank, the cold water of storage tank 264 is extracted out by spray pump 265, one tunnel supply vavuum pump 254, another road supply shower 263, shower 263 pairs of radiator coil tubes 245 and 252 spray cold water, exhaust blower 261 is introduced air by the air inlet (not shown) on cooling tower 260 and is cooled the water through radiator coil tube 245 and 252 heating, water fender 262 prevents the shower water of cooling heat dissipation coil pipe from upwards flying out.
Fig. 6 is the flow chart of high-frequency vacuum method for drying wood of the present invention, and as shown in the figure, described drying means, comprising:
First, in step S600, timber layering is placed between negative plate 122 on pallet 220 and positive plate 121, utilize fork truck by pallet fork on material containing car, be transported in vacuum tank, wherein, described method timber layering be placed between positive plate on pallet and negative plate comprises: be placed into by pallet on ground, negative plate placed by pallet, negative plate stacks timber, on timber, place positive plate, repeat said process until all timber overlays between positive plate and negative plate; Two of fork truck fork truck bars are inserted in two through holes of above-mentioned pallet, fork truck is utilized to be placed on described transport support by the pallet stacking timber, that has saved timber piles up the time, such as, in the vacuum tank of 10 cubic metres, pile up sheet material in prior art is normally first the sawing of 50mm*200mm sheet material is become 4-5mm*200mm thickness sheet material; The material cut wants artificial blocks of superimposed code good, about approximately wanting code 1300mm height, and wants code 4 to pile up neatly; Timber is transported to vacuum tank scene; By manually by blocks of for timber piling on material containing car, as requested, every yard will spread a 6000mm*1300mm aluminium sheet as battery lead plate to 300mm, totally 4 layers of timber.Finally enter tank and carry out drying, need the time of piling up sheet material more than 7 hours, and the village's sawing of 50mm*200mm plate is first become 4-5mm*200mm thickness sheet material by the present invention; The material direct code cut is on pallet, and every 300mm puts one block of 1300mm*2000mm aluminium sheet, about wanting code 1300mm height equally, and wants code 4 to pile up neatly; Forking pallet with fork truck is directly transported on this equipment stack pallet; Treat that material is put together, with above-mentioned clamp, all aluminium sheets are connected, finally enter tank drying.Be reduced to blank-code by blank-code material-haul-code material and transport-charging, such code material, needs the time of piling up timber to be less than 2 hours.
After needing dry timber to be placed into positive slack tank, in step S610, the copper strips of vacuum tank sidewall is connected respectively to positive plate and negative plate, closes vacuum tank, start radio tube, timber is heated, wherein, the method that the described copper strips by vacuum tank sidewall is connected respectively to positive plate and negative plate comprises, and one end 230A of train wheel bridge 231 and lower plate 232 inserts copper strips, and with screw-nut, upper lower plate is tightened up, then other end 230B is pushed negative plate and positive plate.
Then, in step S620, judge pressure in vacuum tank whether in prescribed limit, the kind of the timber that afore mentioned rules scope is dry as required and quantity are determined, with absolute zero-pressure for starting point, generally within the scope of 0.02-0.04Mpa.
If pressure is within the scope of afore mentioned rules, return step S610.
If pressure is not within the scope of afore mentioned rules, in step S630, start vavuum pump and vacuum tank is taken out very
Empty.
Then, in step S640, judge whether pressure arrives the lower limit of afore mentioned rules scope.
If pressure does not arrive the lower limit of afore mentioned rules scope, then return step S630.
If pressure arrives the lower limit of above-mentioned scope, in step S650, stop vavuum pump, maintained for first scheduled time, then open vacuum pneumatic valve, air is filled with in vacuum tank, wherein, first scheduled time was a setting value, determined according to technique scene, preferably, first scheduled time is within the scope of 1-30 minute.
Then, in step S660, judge that pressure arrives the upper limit of above-mentioned scope.
If pressure does not reach the upper limit of prescribed limit, then return step S650.
If pressure arrives the upper limit of prescribed limit, in step S670, close vacuum pneumatic valve, maintained for second scheduled time, then restart vacuum pump evacuation, wherein, second scheduled time was a setting value, set according to the kind of desiccated wood and the cubic number of vacuum tank, preferably, second scheduled time is within the scope of 10-30 minute.
Finally, in step S680, repeat above-mentioned steps, until the moisture content of timber reaches requirement, terminate dry run, open vacuum tank, be placed into outside material containing car with fork truck by pallet and dried timber, the timber piled up by another batch is directly pitched on material containing car and is carried out drying, wherein, the water content requirement of the described drying of wood is determined according to the kind of timber, purposes and scene temperature, general about 10%.After said method of the present invention such as not to need at the timber cooling to be dried, dry timber is unloaded carry out again next group timber pile up and dry, timber is piled up respectively on two cover pallets, real-time drying a set of, get the raw materials ready outside tank a set of, when the drying of wood of a set of pallet is good, directly pallet is pitched out with fork truck, put another pallet timber, the time of comparatively passing by load and unload material at least can reduce one day, greatly save the drying of wood time, improve drying efficiency, be conducive to the mass of the drying of wood.
Preferably, also comprise in step S610: close vacuum tank, the soft water starting electron tube softened water pump absorption softened water tank while starting radio tube carries out water cooling to described radio tube.
The above-mentioned method for drying wood of the present invention is compared with the drying means of prior art, adopt the pressure in vacuum valve and vavuum pump pulsewidth modulation vacuum tank, both made the boiling point of water not higher than drying of wood temperature, the a large amount of steam produced in dry run are made again to discharge vacuum tank in time, prevent the phenomenon that in vacuum tank, hydrone concentration is saturated, thus make drying of wood speed at least improve 10-15% and the defect that there will not be the drying of wood insufficient.
Although disclosed content shows exemplary embodiment of the present invention above, it should be noted that under the prerequisite not deviating from the scope of the present invention that claim limits, can multiple change and amendment be carried out.Need not perform with any particular order according to the function of the claim to a method of inventive embodiments described herein, step and/or action.In addition, although element of the present invention can describe or requirement with individual form, also it is contemplated that multiple, is odd number unless explicitly limited.
Claims (10)
1. a high-frequency vacuum Wood drying apparatus, comprising:
High frequency generation control cabinet, is provided with the radio tube producing high frequency electric in it;
Material containing car, for the timber placing negative plate, positive plate and be clipped between negative plate and positive plate;
Vacuum tank, its madial wall is provided with the copper strips be electrically connected with described radio tube and the track slided in vacuum is filled with for material containing car;
Cooling device, the air duct being provided with vavuum pump and being communicated with vacuum tank, for vacuumizing vacuum tank, and the steam that cooling vacuum tank is discharged,
Wherein, the vacuum valve that described high-frequency vacuum Wood drying apparatus also comprises the pallet for carrying timber and is arranged on the air duct of described vacuum tank and cooling device, described pallet is provided with two through holes, when described vacuum valve is opened, in vacuum tank, is filled with air.
2. drying device according to claim 1, wherein, the height of each through hole of described pallet and width are greater than thickness and the width of fork truck arm, and fork truck arm is inserted in described through hole.
3. drying device according to claim 1, described copper strips one end is electrically connected with described radio tube, wherein, the other end of described copper strips is provided with the clamp for clamping positive plate or negative plate, described clamp comprises train wheel bridge and lower plate, one end of train wheel bridge and lower plate is tightened up by screw-nut, and along described screw vertical direction Mirror Symmetry, train wheel bridge and lower plate all comprise the Part I and Part II that are integrally formed, one end of Part I is provided with through hole, one end of the other end and Part II in obtuse angle, the other end of Part II is in the arc that turns up.
4. drying device according to claim 3, wherein, described obtuse angle is within the scope of 150 °-170 °.
5. drying device according to claim 3, wherein, the Part II of described train wheel bridge and lower plate turns up the angle of arc tips within the scope of 30 °-50 °.
6. drying device according to claim 1, wherein, described cooling device also comprises electron tube water-cooling apparatus, the outlet water pipe comprising the water jacket be arranged on radio tube, be connected import water pipe, the radiator coil tube be connected with import water pipe, the softened water pump be connected with radiator coil tube and softened water tank, be connected with softened water tank and water jacket delivery port with water jacket water inlet.
7. drying device according to claim 1, wherein, the inwall rolling of described vacuum tank has stainless steel.
8. a high-frequency vacuum method for drying wood, comprising:
Timber layering is placed between negative plate on pallet and positive plate, utilizes fork truck by pallet fork on material containing car, be transported in vacuum tank;
The copper strips of vacuum tank sidewall is connected respectively to positive plate and negative plate, closes vacuum tank, start radio tube, between positive plate and negative plate, produce electromagnetic field of high frequency, timber is heated;
Judge pressure in vacuum tank whether in prescribed limit;
If pressure is in prescribed limit, return the above-mentioned step that timber is heated;
If pressure is not in prescribed limit, starts vavuum pump and vacuum tank is vacuumized;
Judge whether pressure arrives the lower limit of prescribed limit;
If pressure does not arrive the lower limit of prescribed limit, then vavuum pump continues to vacuumize to vacuum tank;
If pressure arrives the lower limit of prescribed limit, stop vavuum pump, maintained for first scheduled time, then open vacuum valve, in vacuum tank, be filled with air, wherein, first scheduled time was a setting value, determined according to technique scene;
Judge that pressure arrives the upper limit of prescribed limit;
If pressure does not reach the upper limit of prescribed limit, then vacuum pneumatic valve keeps open mode and sucks air;
If pressure arrives the upper limit of prescribed limit, close vacuum pneumatic valve, maintained for second scheduled time, then restart vacuum pump evacuation, wherein, second scheduled time was a setting value, set according to the kind of desiccated wood and the cubic number of vacuum tank;
Repeat above-mentioned steps, until the moisture content of timber reaches requirement, terminate dry run, open vacuum tank, be placed into outside material containing car with fork truck by pallet and dried timber, the timber piled up by another batch is directly pitched on material containing car and is carried out drying.
9. drying means according to claim 8, wherein, described method timber layering be placed between positive plate on pallet and negative plate comprises:
Pallet is placed on ground, negative plate placed by pallet, negative plate stacks timber, on timber, place positive plate, repeat said process until all timber overlays between positive plate and negative plate;
Two of fork truck fork truck arm are inserted in two through holes of above-mentioned pallet, utilize fork truck to be placed on described transport support by the pallet stacking timber.
10. drying means according to claim 8, wherein, described cut out vacuum tank, the soft water starting electron tube circulating pump absorption softened water tank while starting radio tube carries out water cooling to radio tube.
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| CN201510086375.9A CN104697297B (en) | 2015-02-16 | 2015-02-16 | A kind of high-frequency vacuum Wood drying apparatus and method |
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| CN201510086375.9A CN104697297B (en) | 2015-02-16 | 2015-02-16 | A kind of high-frequency vacuum Wood drying apparatus and method |
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| CN105387691A (en) * | 2015-11-24 | 2016-03-09 | 南京林业大学 | Drying method for controlling wood collapse |
| CN106938486A (en) * | 2017-03-20 | 2017-07-11 | 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 |
| CN108721927A (en) * | 2018-07-10 | 2018-11-02 | 江门市东江环保技术有限公司 | A kind of vacuum drying recovery system |
| CN110513966A (en) * | 2019-04-17 | 2019-11-29 | 宜华生活科技股份有限公司 | A kind of timber dewatering, drying and carbonization integrated equipment for wastewater treatment and its processing method |
| 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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| CN105387691A (en) * | 2015-11-24 | 2016-03-09 | 南京林业大学 | Drying method for controlling wood collapse |
| CN106938486A (en) * | 2017-03-20 | 2017-07-11 | 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 |
| CN108721927A (en) * | 2018-07-10 | 2018-11-02 | 江门市东江环保技术有限公司 | A kind of vacuum drying recovery system |
| 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 |
| CN110513966A (en) * | 2019-04-17 | 2019-11-29 | 宜华生活科技股份有限公司 | A kind of timber dewatering, drying and carbonization integrated equipment for wastewater treatment and its processing method |
| 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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