CN103075875B - Wood-drying hot-blast stove - Google Patents
Wood-drying hot-blast stove Download PDFInfo
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- CN103075875B CN103075875B CN201310044741.5A CN201310044741A CN103075875B CN 103075875 B CN103075875 B CN 103075875B CN 201310044741 A CN201310044741 A CN 201310044741A CN 103075875 B CN103075875 B CN 103075875B
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Abstract
The invention belongs to the technical field of wood-drying equipment and provides a wood-drying hot-blast stove. The hot-blast stove comprises a heating furnace, wherein the heating furnace comprises a furnace body; the inner cavity of the furnace body is a combustion chamber; a smoke-collecting pipe communicated with the combustion chamber is arranged on one side of the combustion chamber; at least two layers of flues are arranged above the heating furnace; each layer of the flue is provided with an air inlet pipe and an air outlet pipe; a box body is hermitically arranged outside the heating furnace and the flues; and the box body is provided with clapboards. In a working process, after entering the wood-drying hot-blast stove, air is heated by the furnace body and the smoke-collecting pipe, enters the flues, is heated by the smoke generated by combustion for multiple times, and then is exhausted through the air outlet pipe of the box body to dry woods. According to the wood-drying hot-blast stove, the flow paths of the air in the wood-drying hot-blast stove are increased, the heating times of the air are also increased, the thermal energy utilization rate of combusted fuel is improved, the temperature of exhausted hot air is also increased, and the drying efficiency and the quality of a single wood plate are improved.
Description
Technical field
The invention belongs to timber drier technical field, relate in particular to a kind of timber stoving hot-blast stove.
Background technology
Wood single-plate, is again musculus cutaneus, wooden skin, and its main application is for producing the artificial boards such as glued board, core-board, template, thick china.Wood single-plate divides two kinds of rotary-cut and slicings, and the veneer that wood-based plate is used mostly is rotary-cut.The wood single-plate going out because of rotary-cut contains large quantity of moisture, so need to carry out being just used for producing after drying and processing artificial board to it.
Traditional drying mode is that a sheet by a sheet airing of wood single-plate that rotary-cut is gone out is under sunshine, evaporate and make wood single-plate become dry by moisture, but the defect that this airing mode exists is to take a large amount of places, production efficiency is low, the easy turnup distortion of wood single-plate after airing, difficult quality guarantee, but also to be subject to the restriction of weather conditions.
In order to increase work efficiency, at present, a large amount of use dryers when kiln dried wood veneer, and existing lignum veneer drying-machine uses hot-blast stove heating, drying mostly.But the hot cigarette of existing timber stoving hot-blast stove directly enters atmosphere by chimney after having heated air, the cigarette of discharge has been taken away a large amount of heats, has wasted a large amount of energy.
Summary of the invention
The object of the present invention is to provide a kind of timber stoving hot-blast stove, be intended to solve the problem of the energy waste that timber stoving hot-blast stove of the prior art causes because heat utilization rate is low.
The present invention is achieved in that a kind of timber stoving hot-blast stove, comprises heating furnace, and the top of described heating furnace is provided with flue, and the outside sealing of described heating furnace and described flue is provided with casing, wherein:
Described heating furnace comprises body of heater, and the inner chamber of described body of heater is combustion chamber, and a side of described combustion chamber is provided with coupled logical smoke collection pipe, and described smoke collection pipe is smoke collection pipe exhaust opening away from the end, one end of described combustion chamber;
Described flue is at least provided be connected two-layer up and down, the one end that is positioned at the described flue of bottom is provided with flue and enters mouth, described flue enters mouth sealing and is arranged on described smoke collection pipe exhaust opening, the one end that is positioned at the described flue of top layer is provided with chimney meatus transmitting smoke mouth, according to flow of flue gas direction, the outlet flue that is positioned at the described flue of low layer is the mouth that enters that is positioned at high-rise described flue being adjacent;
In every layer of described flue, be equipped with a smokejack air inlet pipe and a smokejack escape pipe, described flue air inlet pipe is positioned at below described flue escape pipe, the two ends of described flue air inlet pipe are arranged on the two side of described flue through two side the sealing of described flue, and the two ends of described flue escape pipe are also arranged on the two side of described flue through two side the sealing of described flue;
Described casing is heat-insulation and heat-preservation casing, and corresponding to the described flue air inlet pipe of flue every layer described and the boundary of described flue escape pipe, sealing is provided with the first box partition between described cabinet wall and described flue sidewall; The boundary of flue described in every adjacent two layers, sealing is provided with the second box partition between described cabinet wall and described flue sidewall, and described the first box partition and described the second box partition lay respectively at the both sides of described flue;
Described lower box is provided with some casing air inlet pipe, and described casing top is provided with some casing escape pipes, and the top of described casing is provided with chimney, and described chimney sealing is arranged on described chimney meatus transmitting smoke mouth.
As a kind of improved plan, described heating furnace is the double-decker of sealing, in the interlayer of described heating furnace, it is oily hot chamber, the below sealing of described smoke collection pipe exhaust opening is provided with the oil inlet pipe being connected with the hot chamber of described oil, on described body of heater, sealing is provided with the body of heater flowline being connected with the hot chamber of described oil, described body of heater flowline is provided with some oily heat pipe heat, each described oily heat pipe heat forms by the back-shaped connection of some oily heat pipes, the other end sealing of described oily heat pipe heat is provided with heating furnace oil return pipe, described heating furnace oil return pipe is fixedly installed on described smoke collection pipe, the exit seal of described heating furnace oil return pipe is provided with flowline.
As a kind of improved plan, between described body of heater and described smoke collection pipe, sealing is provided with some described oily heat pipes, and the two ends of described oily heat pipe are all connected with the hot chamber of described oil, and sealing is arranged on described body of heater and described smoke collection pipe.
As a kind of improved plan, described body of heater is provided with body of heater oil return pipe, the lower end sealing of described body of heater oil return pipe is arranged on described body of heater, described body of heater oil return pipe is connected with the hot chamber of described oil, the top of described body of heater oil return pipe is provided with auxiliary fuel tank, and described auxiliary fuel tank is fixedly installed on the outside of described casing.
As a kind of improved plan, described auxiliary fuel tank is provided with respirator.
As a kind of improved plan, described body of heater oil return pipe is provided with pressure-control valve, and described pressure-control valve is positioned at the outside of described casing.
As a kind of improved plan, the two ends of described flue are equipped with opening, on the sealed at both ends inwall that is arranged on described casing of described flue, and the both ends open place of corresponding described flue on described casing, be equipped with clean-out door, the equal seal closure of each described clean-out door is on described casing.
Timber stoving hot-blast stove provided by the invention is because it is provided with at least two-layer flue with air inlet pipe and escape pipe above body of heater and smoke collection pipe, in the course of the work, air is heated by body of heater and smoke collection pipe after entering this timber stoving hot-blast stove, and then enter flue air inlet pipe, in flue air inlet pipe, the flue gas of burned generation carries out post bake, and it also can, by three heating, then be discharged timber is dried through casing escape pipe after entering flue escape pipe.
Timber stoving hot-blast stove provided by the invention has not only increased circulation path therein of air but also has increased the heating times of air, the heat utilization rate that has not only improved fuel combustion has also increased the temperature of the hot blast of its discharge, has improved drying efficiency and the quality of wood single-plate.
Brief description of the drawings
Fig. 1 is that the structure master of the timber stoving hot-blast stove that provides of the embodiment of the present invention is depending on analysing and observe diagram;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of the heating furnace that provides of the embodiment of the present invention;
Fig. 4 is the structural representation of the body of heater that provides of the embodiment of the present invention;
Fig. 5 is the structural representation of the smoke collection pipe that provides of the embodiment of the present invention;
Fig. 6 is the structural representation of the flue that provides of the embodiment of the present invention;
Fig. 7 is that the master of Fig. 6 looks cutaway view;
Fig. 8 is the structural representation front view of the casing that provides of the embodiment of the present invention;
Fig. 9 is the left view of Fig. 8;
Figure 10 is the top view of Fig. 8;
In figure: 1-heating furnace, the hot chamber of 11-oil, 12-body of heater, 121-combustion chamber, 122-body of heater flowline, 13-smoke collection pipe, 131-smoke collection pipe exhaust opening, 14-oil inlet pipe, 15-oil heat pipe heat, 151-oil heat pipe, 16-heating furnace oil return pipe, 17-flowline, 18-body of heater oil return pipe, 181-pressure-control valve, 2-flue, 21-buffler, 22-lower flue, 221-lower flue air inlet pipe, 222-lower flue escape pipe, 23-upper flue, 231-upper flue air inlet pipe, 232-upper flue escape pipe, 24-flue enters mouth, 25-chimney meatus transmitting smoke mouth, 3-casing, 31-casing discharge port, 32-casing charge door, 331-the first dividing plate, 332-second partition, 34-casing air inlet pipe, 35-casing escape pipe, 36-chimney, 37-auxiliary fuel tank, 371-respirator, 38-clean-out door.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 and Fig. 2 show the structural representation of the timber stoving hot-blast stove that the embodiment of the present invention provides jointly, and in this embodiment, flue is double-decker, and for convenience of explanation, this figure only provides the structure division relevant with the present invention.
Timber stoving hot-blast stove, comprises heating furnace 1, is provided with flue 2 above heating furnace 1, is provided with casing 3 in the sealing of the outside of heating furnace 1 and flue 2, wherein:
As shown in Figures 3 to 5, heating furnace 1 is the double-decker of sealing, in the interlayer of heating furnace 1, it is oily hot chamber 11, heating furnace 1 comprises body of heater 12, the inner chamber of body of heater 12 is combustion chamber 121, one side of combustion chamber 121 is provided with coupled logical smoke collection pipe 13, and smoke collection pipe 13 is smoke collection pipe exhaust opening 131 away from the end, one end of combustion chamber 121.
The below sealing of smoke collection pipe exhaust opening 131 is provided with the oil inlet pipe 14 being connected with the hot chamber 11 of oil, on body of heater 12, sealing is provided with the body of heater flowline 122 being connected with the hot chamber 11 of oil, body of heater flowline 122 is provided with some oily heat pipe heat 15, each oily heat pipe heat 15 forms by the back-shaped connection of some oily heat pipes 151, the other end sealing of oil heat pipe 151 is provided with heating furnace oil return pipe 16, heating furnace oil return pipe 16 is fixedly installed on smoke collection pipe 13, and the exit seal of heating furnace oil return pipe 16 is provided with flowline 17.Adopt after this kind of structure, conduction oil can circulate in heating furnace 1, accelerates heat transference efficiency.Meanwhile, the flue gas in the fuel combustion in body of heater 12 and smoke collection pipe 13 all heats conduction oil, has improved heat utilization rate, reduces the loss of heat.
In the course of the work, air is heated by conduction oil after entering this timber stoving hot-blast stove, has improved the efficiency of heating surface of air.Use heat-conducting oil heating can also ensure its heat conduction stability, make the hot blast temperature that this timber stoving hot-blast stove provides keep stable, ensured the quality of timber stoving.Casing 3 sealings are arranged on to the outside of heating furnace 1 and flue 2, and use dividing plate that regional is isolated respectively, can effectively prevent the leakage of hot gas, reduce thermal loss, increase heat utilization rate.
In this embodiment, between body of heater 12 and smoke collection pipe 13, sealing is provided with some oily heat pipes 151, the two ends of oil heat pipe 151 are connected with the hot chamber 11 of oil respectively, the two ends of oil heat pipe 151 seal respectively and are arranged on body of heater 12 and smoke collection pipe 13, can further improve the circulation rate of conduction oil, can also increase the area of dissipation of heating furnace 1, accelerate the firing rate of air simultaneously.
As shown in Figure 6 and Figure 7, flue 2 is rectangular tubular structure, and the two ends of flue 2 are separately positioned on the top of body of heater 12 and smoke collection pipe 13, in flue 2, be provided with buffler 21 and be divided into lower flue 22 and upper flue 23, wherein:
One end of lower flue 22 is provided with flue and enters mouth 24, and flue enters mouth 24 sealings and is arranged on smoke collection pipe exhaust opening 131, and one end of upper flue 23 is provided with chimney meatus transmitting smoke mouth 25, and according to flow of flue gas direction, the outlet flue of lower flue 22 is the mouth that enters of upper flue 23;
The length of buffler 21 is less than the length of flue 2, and one end sealing of entering mouth 24 same positions with flue on buffler 21 is arranged on the end of flue 2,
Lower flue 22 is provided with row's lower flue air inlet pipe 221 and row's lower flue escape pipe 222, lower flue air inlet pipe 221 is positioned at below lower flue escape pipe 222, similarly, on upper flue 23, also there are row's upper flue air inlet pipe 231 and row's upper flue escape pipe 232, upper flue air inlet pipe 231 is positioned at below upper flue escape pipe 232
The two ends of lower flue air inlet pipe 221, lower flue escape pipe 222, upper flue inlet tube 231 and upper flue escape pipe 232 are all arranged on the two side of flue 2 through two side the sealing of flue 2.
Use flue 2, make flue gas after smoke collection pipe 13, enter successively lower flue 22 and upper flue 23, and again heat to the air of circulation in lower flue air inlet pipe 221 and lower flue escape pipe 222 and upper flue air inlet pipe 231 and upper flue escape pipe 232, and increase the circulation path of air in this timber stoving hot-blast stove inside, increase its heat time, improve heat utilization rate, reduce to greatest extent entrained heat in the waste gas that this timber stoving hot-blast stove discharges.
As shown in Fig. 8 to Figure 10, casing 3 is heat-insulation and heat-preservation casing, is provided with casing discharge port 31 below casing 3, and 31 sealings of casing discharge port are arranged on the bottom of body of heater 12,
One end identical with body of heater 12 positions on casing 3 is provided with casing charge door 32, and 32 sealings of casing charge door are arranged on the outside of body of heater 12, and for broadening one's vision, the convenient fuel that adds, can be set to the pyramidal structure that outer imperial palace is little by casing charge door 32,
Due in this embodiment, because flue 2 is double-decker, corresponding lower flue air inlet pipe 221 and the boundary of lower flue escape pipe 222 and the boundary of corresponding upper flue air inlet pipe 231 and upper flue escape pipe 232 all seal the first box partition 331 being provided with between casing 3 inwalls and flue 2 sidewalls, the boundary sealing of corresponding lower flue 22 and upper flue 23 is provided with the second box partition 332 between casing 3 inwalls and flue 2 sidewalls, the first box partition 331 and the second box partition 332 lay respectively at the both sides of flue 2, bottom on casing 3 is provided with some casing air inlet pipe 34, the top of casing 3 is provided with some casing escape pipes 35, the top of casing 3 is provided with chimney 36, chimney 36 sealings are arranged on chimney meatus transmitting smoke mouth 25.Like this, air enters in turn lower flue air inlet pipe 221 after entering in this timber stoving hot-blast stove after heat-conducting oil heating, lower flue escape pipe 222, and upper flue air inlet pipe 231 and upper flue escape pipe 232 heat again.
Certainly, for improving the efficiency of circulation of air, increase the heating effect of air in flue 2, can below the first dividing plate 331, a dividing plate be set, this dividing plate and second partition 332 homonymies, be positioned at below lower flue air inlet pipe 221, correspondingly the position of casing air inlet pipe 34 is also adjusted to below this dividing plate.
User can based on fuel the fuel factor of burning and the more multi-layered flue of different choice of heat utilization rate, correspondingly corresponding adjustment also should be made in the position of the position of dividing plate and quantity and casing air inlet pipe and casing escape pipe, does not just repeat one by one at this.
In this embodiment, on body of heater 12, be provided with body of heater oil return pipe 18, the lower end sealing of body of heater oil return pipe 18 is arranged on body of heater 12, body of heater oil return pipe 18 is connected with oily hot chamber 11, the upper end of body of heater oil return pipe 18 is provided with auxiliary fuel tank 37, auxiliary fuel tank 37 is fixedly installed on the outside of casing 3, can make the too fast rising of conduction oil Yin Wendu after heating in body of heater 12 and after expanding, enter auxiliary fuel tank 37, and then preventing from causing because oil pressure is excessive the danger of even exploding and causing of breaking of body of heater 12 or oily heat pipe 151.
On auxiliary fuel tank 37, be provided with respirator 371, can ensure the oil pressure balance in auxiliary fuel tank 37, the interior conduction oil of heating furnace 1 is adding after thermal expansion and can enter auxiliary fuel tank 37 by body of heater oil return pipe 18, to ensure the safety of heating furnace 1, after heating, the conduction oil in auxiliary fuel tank 37 is being back in body of heater 12.
On body of heater oil return pipe 18, be provided with pressure-control valve 181, pressure-control valve 181 is positioned at the outside of casing 3.Pressure-control valve 181 is set can be made conduction oil in body of heater 12 reach to open pressure-control valve after certain pressure to enter in auxiliary fuel tank 37, after the oil pressure in body of heater 12 is decreased to setting value, conduction oil is back in body of heater 12 again, like this, the oil pressure that can ensure body of heater 12 keeps stable also can ensure that conduction oil can not enter arbitrarily in auxiliary fuel tank 37 and causes the conduction oil pressure loss in heating furnace 1, and affects its radiating effect.
In use for some time, in body of heater 1 and flue 2, will stop up smoke collection pipe 13, lower flue 22 and upper flue 23 because partial fume deposit the flue dust forming, cause heat transfer effect to reduce, and the serious flue dust that also can cause stops up, smoke evacuation is difficult.The two ends of flue 2 are equipped with to opening, and on the sealed at both ends inwall that is arranged on casing 3 of flue 2, on casing 3, the both ends open place of corresponding flue 2, is equipped with clean-out door 38, and the equal seal closure of each clean-out door 38 is on casing 3.Adopt this kind of structure, can open in use for some time cleaning door 37 inside of smoke collection pipe 13 and flue 2 is cleared up, keep the unobstructed of smoke collection pipe 13, lower flue 22 and upper flue 23, ensure the unobstructed and heat utilization rate of smoke evacuation.
The timber stoving hot-blast stove that the embodiment of the present invention provides is because it is provided with at least two-layer flue with air inlet pipe and escape pipe above body of heater and smoke collection pipe, in the course of the work, air is heated by body of heater and smoke collection pipe after entering this timber stoving hot-blast stove, and then enter flue air inlet pipe, in flue air inlet pipe, the flue gas of burned generation carries out post bake, and it also can, by three heating, then be discharged timber is dried through casing escape pipe after entering flue escape pipe.
Timber stoving hot-blast stove provided by the invention has not only increased circulation path therein of air but also has increased the heating times of air, the heat utilization rate that has not only improved fuel combustion has also increased the temperature of the hot blast of its discharge, has improved drying efficiency and the quality of wood single-plate.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a timber stoving hot-blast stove, comprises heating furnace, and the top of described heating furnace is provided with flue, and the outside sealing of described heating furnace and described flue is provided with casing, it is characterized in that:
Described heating furnace comprises body of heater, and the inner chamber of described body of heater is combustion chamber, and a side of described combustion chamber is provided with coupled logical smoke collection pipe, and described smoke collection pipe is smoke collection pipe exhaust opening away from the end, one end of described combustion chamber;
Described flue is at least provided be connected two-layer up and down, the one end that is positioned at the described flue of bottom is provided with flue and enters mouth, described flue enters mouth sealing and is arranged on described smoke collection pipe exhaust opening, the one end that is positioned at the described flue of top layer is provided with chimney meatus transmitting smoke mouth, according to flow of flue gas direction, the outlet flue that is positioned at the described flue of low layer is the mouth that enters that is positioned at high-rise described flue being adjacent;
In every layer of described flue, be equipped with a smokejack air inlet pipe and a smokejack escape pipe, described flue air inlet pipe is positioned at below described flue escape pipe, the two ends of described flue air inlet pipe are arranged on the two side of described flue through two side the sealing of described flue, and the two ends of described flue escape pipe are also arranged on the two side of described flue through two side the sealing of described flue;
Described casing is heat-insulation and heat-preservation casing, and corresponding to the described flue air inlet pipe of flue every layer described and the boundary of described flue escape pipe, sealing is provided with the first box partition between described cabinet wall and described flue sidewall; The boundary of flue described in every adjacent two layers, sealing is provided with the second box partition between described cabinet wall and described flue sidewall, and described the first box partition and described the second box partition lay respectively at the both sides of described flue;
Described lower box is provided with some casing air inlet pipe, and described casing top is provided with some casing escape pipes, and the top of described casing is provided with chimney, and described chimney sealing is arranged on described chimney meatus transmitting smoke mouth.
2. timber stoving hot-blast stove as claimed in claim 1, it is characterized in that: described heating furnace is the double-decker of sealing, in the interlayer of described heating furnace, it is oily hot chamber, the below sealing of described smoke collection pipe exhaust opening is provided with the oil inlet pipe being connected with the hot chamber of described oil, on described body of heater, sealing is provided with the body of heater flowline being connected with the hot chamber of described oil, described body of heater flowline is provided with some oily heat pipe heat, each described oily heat pipe heat forms by the back-shaped connection of some oily heat pipes, the other end sealing of described oily heat pipe heat is provided with heating furnace oil return pipe, described heating furnace oil return pipe is fixedly installed on described smoke collection pipe, the exit seal of described heating furnace oil return pipe is provided with flowline.
3. timber stoving hot-blast stove as claimed in claim 2, it is characterized in that: between described body of heater and described smoke collection pipe, sealing is provided with some described oily heat pipes, the two ends of described oily heat pipe are all connected with the hot chamber of described oil, and sealing is arranged on described body of heater and described smoke collection pipe.
4. timber stoving hot-blast stove as claimed in claim 2, it is characterized in that: described body of heater is provided with body of heater oil return pipe, the lower end sealing of described body of heater oil return pipe is arranged on described body of heater, described body of heater oil return pipe is connected with the hot chamber of described oil, the top of described body of heater oil return pipe is provided with auxiliary fuel tank, and described auxiliary fuel tank is fixedly installed on the outside of described casing.
5. timber stoving hot-blast stove as claimed in claim 4, is characterized in that, described auxiliary fuel tank is provided with respirator.
6. timber stoving hot-blast stove as claimed in claim 4, is characterized in that: described body of heater oil return pipe is provided with pressure-control valve, and described pressure-control valve is positioned at the outside of described casing.
7. the timber stoving hot-blast stove as described in claim 1 to 6 any one, it is characterized in that: the two ends of described flue are equipped with opening, on the sealed at both ends inwall that is arranged on described casing of described flue, the both ends open place of corresponding described flue on described casing, be equipped with clean-out door, the equal seal closure of each described clean-out door is on described casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310044741.5A CN103075875B (en) | 2013-02-04 | 2013-02-04 | Wood-drying hot-blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310044741.5A CN103075875B (en) | 2013-02-04 | 2013-02-04 | Wood-drying hot-blast stove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103075875A CN103075875A (en) | 2013-05-01 |
| CN103075875B true CN103075875B (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310044741.5A Expired - Fee Related CN103075875B (en) | 2013-02-04 | 2013-02-04 | Wood-drying hot-blast stove |
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| CN (1) | CN103075875B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542704B (en) * | 2013-10-26 | 2016-05-18 | 卢洲德 | Plate drying unit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4515145A (en) * | 1983-10-03 | 1985-05-07 | Yukon Energy Corporation | Gas-fired condensing mode furnace |
| CN2557872Y (en) * | 2002-07-19 | 2003-06-25 | 朴海平 | Hot-blast furnace |
| CN2651659Y (en) * | 2003-10-30 | 2004-10-27 | 刘鸣九 | High-efficient coal firing hot-air furnaces |
| CN2826283Y (en) * | 2005-09-30 | 2006-10-11 | 王智明 | Fire tube type coal-fired hot blast stove |
| CN203132304U (en) * | 2013-02-04 | 2013-08-14 | 李祥文 | Wood drying hot blast stove |
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2013
- 2013-02-04 CN CN201310044741.5A patent/CN103075875B/en not_active Expired - Fee Related
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| CN103075875A (en) | 2013-05-01 |
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