CN206905418U - A kind of timber active drying equipment - Google Patents
A kind of timber active drying equipment Download PDFInfo
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- CN206905418U CN206905418U CN201720337427.XU CN201720337427U CN206905418U CN 206905418 U CN206905418 U CN 206905418U CN 201720337427 U CN201720337427 U CN 201720337427U CN 206905418 U CN206905418 U CN 206905418U
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- drying equipment
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Abstract
This application discloses a kind of timber active drying equipment, including kiln body, blower fan and heater, passive dehydrating unit is provided with the top of the kiln body；Also include Active dehumidification device, the Active dehumidification device comprises at least the Active dehumidification portion in the kiln body.Drying efficiency can be greatly improved, shortens arid cycle, reduce energy consumption for drying.
Description
Technical field
The application is related to timber dryer field, and in particular to a kind of active is dry and realizes efficient, high-quality drying
Equipment.
Background technology
Timber is unique recyclable materials in four big basic raw materials, has and regenerates fast, natural, environmentally friendly and outstanding make
The characteristics of with performance, various aspects of the timber with the function that it is not replaced through human lives.The drying process of timber is several
It is that a procedure most long, that power consumption is maximum is taken during timber fabricates, the use more of particularly existing drying process
Hot and humid drying mode.The hot and humid fast rapid-curing cutback of a kind of timber illustrated as disclosed in Chinese patent CN 103017485A
Drying process method, including：Heating step is humidified, timber is placed in dry kiln and closes wicket, it is quick inwards to open humidification valve
Humidification directly humidification arrives relative humidity >=98%, makes to be full of vapor in dry kiln；Warming and humidifying pre-treatment step, keep humidification
Valve is opened, and keeps relative humidity >=98%, is then initially opened heating valve and is heated rapidly to dry-bulb temperature and is more than wet-bulb temperature
1 ~ 2 DEG C and 3 ~ 24h of holding；Hot and humid drying steps, relative humidity in lasting humidification control dry kiln is up to 99 ~ 100%, so
After heat to 103 ~ 135 DEG C and timber be dried 2 ~ 15 days.Although above-mentioned technical proposal effectively increases drying efficiency
And dry mass, but still be based on hot and humid drying mode, manufacture high temperature first, the dry environment of high humidity needs to expend
Larger energy consumption；Secondly hot and humid environment is unfavorable for the discharge of moisture in timber, the dry cycle is extended, typically 20
~ 30 days（Depending on assortment difference）, further increase dry energy resource consumption.Long arid cycle and high energy consumption for drying pair
For wooden enterprise, aggravated raw materials inventory burden and cash flow pressure it is stagnant, add production cost.
Suitable for the drying equipment of above-mentioned drying process, the drying of wood as disclosed in Chinese patent CN201520511335.X
Kiln, including kiln body, kiln body are provided with main wicket, at least one set of air-supply arrangement and heater are provided with kiln body；It is provided with kiln body
Multiple exhaust apparatus；Temperature-detecting device and detecting device for moisture content are provided with kiln body.Dividing plate, air-supply dress are provided with kiln body
Put the top for being located at dividing plate with heater.Blower fan is provided with the exhaust apparatus, is the oblique of ventilation in the bottom of exhaust apparatus
Face, blade are hinged in relatively low side with inclined-plane, are provided with backing pin in the top of blade, backing pin limit blade it is maximum open after with
The angle of horizontal plane is less than 89 °.This structure is the dry kiln structure that typical passive type is dried, and it passes through heating devices heat
Dried medium in kiln, and by the heating of dried medium to realize the effect of relative humidity in reduction kiln, this passive type
Wet down is premised on heating up, and the steam partial pressure of dried medium remains at higher level, is unfavorable for the dry of timber
It is dry；To discharge humid air, be passed through the scavenging way of outside dry air to reduce the temperature of the dried medium in kiln to bring in kiln
The fluctuation of temperature, it is unfavorable for the drying of timber；Meanwhile to make the dried medium of dry kiln maintain high temperature, and overcome
The temperature fluctuation that brings of taking a breath can produce great energy consumption, and because in kiln dried medium steam partial pressure it is larger all the time, so as to
Slow down rate of drying, further increase energy consumption for drying.
Utility model content
The purpose of this utility model is to provide a kind of active drying equipment of timber, and it is dried by active reduction is situated between
The steam partial pressure value of matter, which is realized, reduces relative humidity in kiln, and it is aqueous that the dried medium outside material heap with one kind complies with wood internal
Rate gradient, the mode of thermograde guide moisture to leave timber, so as to the completion drying of wood of the high quality under low-temperature condition, and
And drying efficiency is greatly improved, shortens arid cycle, reduce energy consumption for drying.
Above-mentioned technical purpose of the present utility model technical scheme is that, a kind of timber is actively dried
Equipment, including kiln body, blower fan, heater and dividing plate, the kiln body top are provided with passive dehydrating unit；Also include Active dehumidification
Device, the Active dehumidification device comprise at least Active dehumidification portion, and the Active dehumidification portion forms dehumidifying work in the kiln body
Make section.
As the preferred of above-mentioned technical proposal, the dehumidifying active section includes removing wet point and emission point, the dehumidifying work
Section is on primary air circulation canal, and the maximum steam partial pressure section of the dried medium formed in the primary air circulation canal
With the boundary of minimum steam partial pressure section, the primary air circulation canal is by the loading body in the kiln body and the kiln body kiln
The gap of wall surrounds.
As the preferred of above-mentioned technical proposal, the steam partial pressure value of the dried medium in the primary air circulation canal is certainly
Active dehumidification portion side is incremented to opposite side.
As the preferred of above-mentioned technical proposal, the lower section that the emission point is located at except wet point, and the two spacing is 1 ~ 3
Rice.
As the preferred of above-mentioned technical proposal, the dehumidifying active section（53）Positioned at the Active dehumidification portion（51）And loading
Between vertical heap.
As the preferred of above-mentioned technical proposal, the dehumidifying active section is located at the bottom stage of the primary air circulation canal
On, the bottom stage is the primary air circulation canal in the part of the kiln body bottom.
As the preferred of above-mentioned technical proposal, the vertical gap piled up between the kiln body of adjacent loading forms branch flow
Circulation canal, the bottom stage of the branch flow circulation canal and the primary air circulation canal cross, the dehumidifying active section
On joint.
As the preferred of above-mentioned technical proposal, the operating temperature of the heater is 30 ~ 60 DEG C.
As the preferred of above-mentioned technical proposal, the Active dehumidification portion is located inside the kiln body.
As the preferred of above-mentioned technical proposal, the Active dehumidification portion is located at the outside of the kiln body.
In summary, the timber active drying equipment of the technical program can greatly improve drying efficiency, shorten arid cycle,
Reduce energy consumption for drying.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of the active drying equipment of the utility model embodiment 1；
Fig. 2 is a kind of schematic diagram of the dehumidifying active section of the utility model embodiment 1；
Fig. 3 is a kind of schematic diagram of the active drying equipment of the utility model embodiment 2；
Fig. 4 is a kind of schematic diagram of the active drying equipment of the utility model embodiment 3；
Fig. 5 is that the primary air circulation canal of the utility model embodiment 1,2 and 3 and one kind of branch flow circulation canal are shown
It is intended to；
In figure：1- kiln bodies, 2- blower fans, 3- heaters, the passive dehydrating units of 4-, 5- Active dehumidification devices, 6- dividing plates,
51- Active dehumidifications portion, the outer machines of 52-, 53- dehumidifying active sections, 53a- remove wet point, 53b- emission points, 1., 2., 3., 4., 5.-branch
The joint of airflow circulating passage and bamboo gas channel.
Embodiment
The utility model is described in more detail for scheme below in conjunction with the accompanying drawings and preferably.
Embodiment 1：A kind of timber active drying equipment as shown in Figure 1, including kiln body 1, blower fan 2, heater 3 and every
Plate 6, the top of kiln body 1 are provided with passive dehydrating unit 4, and the bottom of kiln body 1 is provided with Active dehumidification device 5.
Kiln body 1
Due to being a kind of structure-improved of existing dry kiln structure, thus the technical program be applicable to it is existing various
Kiln structure, such as the kiln body of the kiln body of brickkiln structure or aluminium alloy structure.
Blower fan 2
The arrangement mode of blower fan includes type, crosswind type and terminal fan type against the wind, in the technical program, consider its with
The cooperation of passive dehydrating unit 4 and Active dehumidification device 5, type is optimal selection against the wind, i.e., blower fan 2 is located at dry kiln kiln body 1
Top.
Heater 3
Those of ordinary skill in the art understand that the heat form of dry kiln enriches, steam heating, furnace gas heating, conduction oil
Heating and electrical heating etc..The technical program is applicable to the dry kiln of various mode of heatings, and preferable scheme is under blower fan 2
Side is provided with and led（Gear）Wind dividing plate 6, heater 3, dividing plate 6 and kiln body 1 are provided with the headroom of kiln body 1 above dividing plate 6
The gap of four walls forms outlet and the entrance of airflow circulating.Heater 3 is heat-conducting oil heating structure.Thus, dividing plate 6, plus
In the presence of thermal 3 and blower fan 2, the space of heat exchange is formed at the top of kiln body 1.
Passive dehydrating unit 4
Passive dehydrating unit 4 includes the multiple exhausting windows for being opened in the wall top of kiln body 1 four, when adjusting drying stage
（When needing to reduce relative humidity in kiln）, can lead to and open the mode of exhausting window and discharge humid air in kiln and introduce certain outer
Portion's dry air, preferable multiple exhausting windows can control the degree of folding with controlled discharge humid air.As further excellent
Choosing, the exhausting window of the technical program use the form of exhaust outlet, and exhaust outlet is provided with air-introduced machine, accelerate row by the setting of air-introduced machine
Gas, the steering of the air-introduced machine are opposite with the steering of blower fan 2 all the time.Hydrofuge ventilation recuperation of heat unit is connected on exhaust outlet simultaneously,
The unit adds blower fan structure to promote this hydrofuge to act, and further reclaims the heat energy that damp and hot medium carries, to realize section
Energy.
In the prior art, when improving by the way of relative humidity of the temperature to reduce dried medium, dry Jie can be caused
The increase of the steam partial pressure of matter so that the moisture content on timber top layer improves, or forms interior low outer high water in wood internal and steam
Qi leel pressure difference, moisture are moved from inside to outside by timber under the conditions of passive, are unfavorable for the migration of Water In Wood, are reduced timber
The speed that interior moisture is displaced outwardly, the moisture in timber is discharged in a manner of extruding, is a kind of drying mode of passive type, needed
Arid cycle that will be longer；And drying process is carried out under relative high temperature and high humidity, expends larger energy consumption for drying.
Active dehumidification device 5
When being mounted with timber to be dried in kiln body 1, between the ground of overall material heap and kiln body 1, four walls and dividing plate 6
Gap forms primary air circulation canal, and timber indulges heap（Longitudinal material heap）Passage between vertical heap forms a point vertical branch stream and followed
Ring passage, the bottom stage of branch flow circulation canal and primary air circulation canal cross, joint it is as shown in Figure 4 1., 2.,
③、④、⑤.In the present embodiment, Active dehumidification device 5 is split type dehumidifier, including the Active dehumidification in kiln body 1
Portion 51 and the outer machine 52 outside kiln body 1, Active dehumidification portion 51 are the interior machine of split type dehumidifier, its day moisture removal be 25 ~
35L/ days, 400 ~ 500W of rated power, supporting 1 ~ 3 according to the big I of dry kiln.The active drying equipment of the application, be
Dehumidifying active section 53 is set on primary air circulation canal, is situated between in the inside of dry kiln to carrying drying for the moisture discharged in timber
Matter（Humid medium）Processing is dried, reclaims the vapor of dried medium, and is condensed into water, the water for condensing formation is entered by outer machine 52
Row processing；And by the dried medium after processing（Dry medium）It is released back into dry kiln, the dried medium in dry kiln is protected all the time
Hold under the relative humidity of drying schedule setting, and the dry medium discharged still flows along original air flow path.
Thus, can under isothermal conditions or not using the rise of drying temperature as cost under conditions of realize that dried medium is relative
The reduction of humidity.Benefit caused by so is that the steam partial pressure of dried medium reduces simultaneously, and causes the thickness side of timber
It is poor that low inside and high outside steam partial pressure is consistently formed upwards, active condition is formed, so that moisture has timber under active condition
It is mobile outside interior elder generation, beneficial to the migration of Water In Wood, being displaced outwardly for moisture is promoted, and drying efficiency is which thereby enhanced, and
Drying process is carried out under relative low temperature and low humidity, effectively reduces dry power consumption.Dried medium outside material heap is with one kind
Comply with wood internal moisture gradient, the mode of thermograde guides moisture to leave timber, thus be a kind of drying side of active
Formula.Thus, Active dehumidification portion 51 is used for Active dehumidification, the maximum vapor point of the dried medium formed in primary air circulation canal
Press the separation of section and minimum steam partial pressure section, the steam partial pressure value of the dried medium in primary air circulation canal is from actively
The side of dehumidification portion 51 is incremented to opposite side, and also therefore, the operating temperature of the heater of the drying equipment of the technical program is only
For 30 ~ 60 DEG C.
In the present embodiment, as shown in Fig. 2 Active dehumidification portion 51 is the interior machine of split type dehumidifier, Active dehumidification portion 51
The pump orifice of the humid medium of the upper material heap with towards longitudinal direction and the floss hole for doing empty medium, the pump orifice form and remove wet point 53a,
The floss hole forms emission point 53b, except the exchange that humid medium and dry medium are completed between wet point 53a and emission point 53b, from
And remove and dehumidifying active section 53 is formd between wet point 53a and emission point 53b.
Preferably, Active dehumidification portion 51 is placed in the bottom stage of primary air circulation canal, and bottom stage is primary air circulation
Passage is located at position relative with heater 3 on primary air circulation canal in the part of the bottom of kiln body 1, thus Active dehumidification portion 51
Put；And be further preferably, it is compared with high water vapor partial pressure that Active dehumidification portion 51, which is located at Active dehumidification portion 51 on joint,
Dried medium reception and process points and relatively low steam partial pressure dried medium point of release；By blast apparatuses such as blower fans
Each horizontal air flue of airflow passes of the dried medium formed, desiccated wood and the moisture for taking away timber, become to have compared with Gao Shui
The dried medium of partial vapour pressure, after be settled down to bottom airflow passage, humid air on interior circulating dehumidification point by drying after discharge, it is multiple
For the dried medium with relatively low steam partial pressure, and up back into again in dry gas stream circulation.Circulating dehumidification point in thus
Set on the dry gas stream passage of bottom, can highly efficient and energy-conservation ground completion hydrofuge work.Point 1., 2., 3., 4., 5. and
Gas channels where 5 points are described bottom gas circuit.
Embodiment 2：The difference of embodiment 2 and embodiment 1 is, as shown in figure 3, Active dehumidification device 5 is removing for integral type
Wet machine, it only forms an Active dehumidification portion 51 in kiln body 1.Optional dehumidifier includes compressor-type frequency conversion dehumidifier, day
Moisture removal 25L/ days, it is applicable the ㎡ of area about 80.
Embodiment 3：The difference of embodiment 3 and embodiment 1 is, as shown in figure 3, Active dehumidification portion 51 is located at the outer of kiln body 1
Portion, and the dried medium inside kiln body 1 is handled by dehumidifier pipeline 7 and discharge tube 8.Dehumidifier pipeline 7 is in kiln body 1
Formation removes wet point 53a, for damp and hot dried medium to be evacuated in Active dehumidification portion 51 and handle；Discharge tube 8 is in kiln body 1
Emission point 53b is formed, for the cold dry air after Active dehumidification portion 51 is handled to be drained back into inside kiln body 1.It is placed on outer
The benefit in portion is that the dry medium sent back to inside kiln body 1 is dry and cold medium, at a temperature below the temperature of the dried medium in kiln body 1,
This mode is beneficial to the process of cooling, and beneficial to the drying of temperature-fall period.Alternatively, except wet point 53a is located at emission point 53b
Top, and setting distance therebetween is 1 ~ 3 meter, except wet point 53a and emission point 53b form dehumidifying active section 53.
Utilize the technical program（Such as embodiment 1 and embodiment 2）Active drying equipment, can use following techniques dry wood
Material.Choose quick growth poplar wood, first moisture content 92%.Thickness 30mm, length 2000mm, width 200mm is made in saw.According to following
Step quick growth poplar wood is dried processing.
（1）Stacking, loading of kiln, timber is separated into stacking pile of lumber long 2000mm, wide 1000mm with the parting bead that thickness is 25mm,
High 1000mm small material heap, material heap is then loaded by dry kiln using fork truck, it is to be dried.
（2）When Poplar sawn timber moisture content be more than 40%, dehumidifier is placed between material heap, using circulating dehumidification in dehumidifier
The moisture that is evaporated of timber in discharge dry kiln, dried medium temperature are 40 DEG C, relative humidity 70%, Air flow velocity 5
Meter per second.
（3）When circulating dehumidification drying in Poplar sawn timber moisture content drying to 40%, stopping, being followed outside using dry kiln moistureproof window
The moisture being evaporated in the discharge timber of ring.It it is 55 DEG C by dried medium temperature control, relative humidity 55% is aqueous by timber
Rate drying is to 25%.
（4）When the drying of Poplar sawn timber moisture content is to 25%, dehumidifier and moistureproof window are opened, is combined using interior circulating dehumidification
The method of outer circulation dehumidifying discharges the moisture being evaporated in dry kiln in timber jointly.It is 55 DEG C to control medium temperature, relatively
Humidity 50%.
（5）When Poplar sawn timber moisture content is down to 15%, moistureproof window is closed, stops heating, dehumidifier is opened, is followed using interior
Ring removes wet method by the drying of wood to moisture content 8%.It is 35% that medium relative humidity is controlled in drying process.
（6）The Poplar sawn timber after terminating will be dried to be pitched out out of dry kiln with fork truck, parting bead is taken out, be stacked in warehouse.
30mm thickness Poplar sawn timber is dried using this method to dry to 8.3% from first moisture content 92%, arid cycle is 8 days, will
Dry Poplar sawn timber, quality testing is dried by with GB-T6491-2012 Drying quality of sawn timber standard test methods.Detection
As a result it is as shown in table 1.
Claims (10)
1. a kind of timber active drying equipment, including kiln body（1）, blower fan（2）, heater（3）And dividing plate（6）, the kiln body
（1）Top is provided with passive dehydrating unit（4）；It is characterized in that：Also include Active dehumidification device（5）, the Active dehumidification device
（5）Including at least Active dehumidification portion（51）, the Active dehumidification portion（51）In the kiln body（1）It is interior to form dehumidifying active section
（53）.
A kind of 2. timber active drying equipment according to claim 1, it is characterised in that：The dehumidifying active section（53）Bag
Include and remove wet point（53a）And emission point（53b）, the dehumidifying active section（53）On primary air circulation canal, and described in formation
The maximum steam partial pressure section of dried medium in primary air circulation canal and the boundary of minimum steam partial pressure section.
A kind of 3. timber active drying equipment according to claim 2, it is characterised in that：In the primary air circulation canal
Dried medium steam partial pressure value from the Active dehumidification portion（51）Side is incremented to opposite side.
A kind of 4. timber active drying equipment according to claim 2, it is characterised in that：It is described to remove wet point（53a）It is located at
The emission point（53b）Lower section, and the two spacing is 1 ~ 3 meter.
A kind of 5. timber active drying equipment according to claim 1, it is characterised in that：The dehumidifying active section（53）Position
In the Active dehumidification portion（51）Between the vertical heap of loading.
A kind of 6. timber active drying equipment according to claim 3 or 4, it is characterised in that：The dehumidifying active section
（53）In the bottom stage of the primary air circulation canal, the bottom stage is the primary air circulation canal in the kiln body
（1）The part of bottom.
A kind of 7. timber active drying equipment according to claim 6, it is characterised in that：Adjacent loading is vertical pile up it is described
Kiln body（1）Between gap form branch flow circulation canal, the circulation of the branch flow circulation canal and the primary air is logical
The bottom stage in road crosses, the dehumidifying active section（53）On joint.
A kind of 8. timber active drying equipment according to claim 1, it is characterised in that：The heater（3）Work
Make temperature as 30 ~ 60 DEG C.
A kind of 9. timber active drying equipment according to claim 1 or 2 or 3, it is characterised in that：The Active dehumidification portion
（51）Positioned at the kiln body（1）It is internal.
A kind of 10. timber active drying equipment according to claim 1 or 2 or 4, it is characterised in that：The Active dehumidification
Portion（51）Positioned at the kiln body（1）It is outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720337427.XU CN206905418U (en) | 2017-04-01 | 2017-04-01 | A kind of timber active drying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720337427.XU CN206905418U (en) | 2017-04-01 | 2017-04-01 | A kind of timber active drying equipment |
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| Publication Number | Publication Date |
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| CN206905418U true CN206905418U (en) | 2018-01-19 |
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ID=61295117
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720337427.XU Expired - Fee Related CN206905418U (en) | 2017-04-01 | 2017-04-01 | A kind of timber active drying equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871594A (en) * | 2017-04-01 | 2017-06-20 | 清远市慧邦木业科技有限公司 | A kind of timber active drying equipment |
-
2017
- 2017-04-01 CN CN201720337427.XU patent/CN206905418U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871594A (en) * | 2017-04-01 | 2017-06-20 | 清远市慧邦木业科技有限公司 | A kind of timber active drying equipment |
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Granted publication date: 20180119 Termination date: 20190401 |