CN111084404A - Tobacco leaf oven convenient to gas adsorption detects - Google Patents
Tobacco leaf oven convenient to gas adsorption detects Download PDFInfo
- Publication number
- CN111084404A CN111084404A CN202010178710.9A CN202010178710A CN111084404A CN 111084404 A CN111084404 A CN 111084404A CN 202010178710 A CN202010178710 A CN 202010178710A CN 111084404 A CN111084404 A CN 111084404A
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- Prior art keywords
- box body
- tobacco
- heating plate
- heating
- plate supports
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 59
- 238000001179 sorption measurement Methods 0.000 title claims description 9
- 244000061176 Nicotiana tabacum Species 0.000 title 1
- 238000010438 heat treatment Methods 0.000 claims abstract description 70
- 241000208125 Nicotiana Species 0.000 claims abstract description 58
- 238000005070 sampling Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000004677 Nylon Substances 0.000 claims abstract description 9
- 229920001778 nylon Polymers 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000010935 stainless steel Substances 0.000 claims description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 6
- 239000013589 supplement Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000010960 cold rolled steel Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000005341 toughened glass Substances 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/10—Roasting or cooling tobacco
Abstract
The invention discloses a tobacco baking box which comprises a box body and a heating device, wherein the box body is provided with the heating device, a circulating fan is arranged above the heating device, a moisture discharging window is arranged above the box body, a lifting type return air baffle device and two adjustable lock catches are arranged on the side edge of the box body, six hinges are arranged on two sides of the box body, two observation windows and two invisible door handles are arranged on the box body, an underframe is arranged below the box body, and four nylon idler wheels and other devices are arranged below the underframe. The whole baking is automatically finished, so that the invention has the advantages of time saving, labor saving and electricity saving, and the moisture removing effect is good; the contact area of the tobacco leaves and hot air is enlarged through the four groups of heating devices, so that the tobacco leaves are heated more uniformly and baked more uniformly; the invention is provided with a sampling port for placing an adsorbing material and an organic solvent to qualitatively detect the aroma components emitted by the tobacco leaves in the baking process.
Description
Technical Field
The invention relates to the technical field of tobacco curing equipment, in particular to a tobacco leaf oven convenient for gas adsorption detection.
Background
During the tobacco production process, tobacco curing is required to improve the quality of tobacco. At present, the tobacco baking process is mostly realized by adopting coal (or other gas, oil, biofuel and heat pump) and the like, but the baking mode inevitably generates a large amount of waste smoke emission and is not beneficial to environmental protection. In addition, the tobacco grower is required to circularly carry out the complicated labor of coal transportation and coal feeding in the current tobacco baking process, the baking efficiency is low, the tobacco leaves are not baked completely, the speed is slow, the tobacco after baking is inconvenient to collect, and whether the baking is finished or not is not judged well; at present, the effect on the difficult volatilization of water and the uniformity of baking in the baking process is not ideal; the existing oven equipment is not provided with a sampling port for placing an adsorbing material and an organic solvent to qualitatively detect aroma components emitted by tobacco leaves in the baking process, which become technical problems to be solved urgently by technical personnel in the field, and therefore, improvement is made to provide a tobacco leaf oven convenient for gas adsorption detection.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the technical scheme that: a tobacco leaf oven convenient for gas adsorption detection comprises a box body (6) and a heating device (10), and is characterized in that the heating device (10) is installed on the box body (6), a circulating fan (9) is arranged above the heating device (10), a moisture discharging window (1) is arranged above the box body (7), a lifting return air baffle device (8) and two adjustable latches (5) are installed on the side edge of the box body (6), six hinges (4) are arranged on two sides of the box body (6), two observation windows and sun-shading boards (2) and two invisible door handles (13) are arranged on the box body (6), a sampling port (3) is arranged below the observation windows and sun-shading boards (2), two air sampling ports (7) are arranged on the side surface of the box body (6), an under frame (11) is arranged below the box body (6), and four nylon idler wheels (12) are installed below the under, the front and the back of the box body (6) are respectively provided with a rear door (15) and a front door (17), the rear door (15) and the front door (17) are respectively provided with a sealing strip (14) special for automobiles, and meanwhile, the top of the box body (6) is provided with an air supplement door (16).
The rated drying amount of the oven is about 25 kg.
Preferably, the size of the moisture exhaust window (1) is 220mm multiplied by 150mm, and the moisture exhaust window is made of aluminum alloy and has a louver structure; the observation window and the sun shield (2) are composed of double-layer toughened glass with the thickness of 5mm and a sun shield with the thickness of 0.8mm, and the size specification of the observation window and the sun shield is 600mm multiplied by 400 mm.
Preferably, the sampling port (3) can be used for placing an adsorbing material and an organic solvent to qualitatively detect the tobacco leaf emission in the baking process
The fragrance component comes out.
Preferably, the type of the circulating fan (9) is CKF-C2.5# axial flow high temperature resistant wet fan, the voltage is 380V, the full pressure is 120-160Pa, the power is 180W, the rotating speed is 2900r/min, and the air volume is 1400-2200 cubic meter/h.
Preferably, the heating devices (10) are four groups of heating plate supports, the single group power is 0.6KW, the total power is 2.4KW, the voltage is 220V, and the four groups of heating devices are connected through M8X50 countersunk zinc-plated bolts.
Preferably, the four groups of heating plate supports of the heating device (10) are two sets of heating plate supports 1 and two sets of heating plate supports 2 respectively; both the heating plate brackets (18) and (23) in the heating plate brackets (1) and (2) are type 4-phi 12-M8X50 countersunk head bolts; the (19) and (21) of the heating plate brackets 1 and 2 are 8 stainless steel square tubes with the model number of 20 multiplied by 20-340; heating plate support 1
In (20), the model is a stainless steel pipe with the size of 20 multiplied by 20-805, 2 pieces; the type of the heating plate bracket 2 is (22)
20X 20-990 stainless steel tube, 2 pieces; the heating plate brackets 1 and 2 contain 50 stainless steel corner pieces of-0.5 multiplied by 15 multiplied by 30; the power of each group of the four groups of heating plate supports is 0.6KW, the total power is 2.4KW, the voltage is 220V, and the four groups of heating devices are connected through M8X50 countersunk zinc-plated bolts.
Preferably, the number of the nylon rollers (12) is four, two directional, 2 universal (with self-locking) and the diameter of each nylon roller is 120 mm.
Preferably, the inner size of the air supplement door (16) is 300mm multiplied by 150mm, and the rotary fan blade is made of cold-rolled steel plates and provided with stamping reinforcing ribs.
The invention has the beneficial effects that:
1. form hot-blastly after heating the cold wind that blows in through the electric plate, then hot-blastly can toast the tobacco of treating that is located the zone of heating to blow off from the air outlet, this kind of tobacco toasts the case owing to adopt be the mode that the electrical heating toasted, does not use coal etc. therefore has the clear advantage of environmental protection, in addition, because cold wind to hot-blastly then to toast all automatic the completion, has labour saving and time saving's advantage, and it is effectual to exhaust wet.
2. This tobacco baking oven toasts evenly, through four group's heating device, increases tobacco leaf and hot-air area of contact, makes the tobacco leaf be heated more evenly, and the tobacco leaf is toasted more evenly, has solved current tobacco baking oven and has toasted inhomogeneous problem to the tobacco leaf.
3. The oven is provided with the sampling port, so that an adsorbing material and an organic solvent can be placed to qualitatively detect aroma components emitted by the tobacco leaves in the baking process, and gas adsorption detection is facilitated.
4. The oven has the advantage of electricity saving, and can save electricity by more than 30% compared with the oven in the prior art.
Drawings
FIG. 1 is a schematic view of the construction of the right vertical face of the tobacco roaster oven of the present invention;
FIG. 2 is a schematic view of the construction of the left elevational side of the tobacco roaster oven of the present invention;
FIG. 3 is a schematic view of the construction of the front elevation of the tobacco roaster oven of the present invention;
FIG. 4 is a schematic view of the construction of the back elevation of the tobacco roaster oven of the present invention;
FIG. 5 is a top plan view of the tobacco roaster oven of the present invention;
FIG. 6 is a schematic view of a heating plate support 1 of the tobacco oven of the present invention;
FIG. 7 is a schematic view of a heating plate support 2 of the tobacco baking oven of the present invention;
FIG. 8 is an enlarged view A of the heating plate supports 1 and 2 of the tobacco oven of the present invention;
in the figure: 1, a moisture exhausting window; 2 observation window and sun shield; 3, a sampling port; 4, a hinge; 5, adjustable lock catches; 6 are all box bodies; 7 an air sampling port; 8 lifting return air baffle device; 9 circulating fan; 10 a heating device; 11 a base; 12 nylon rollers; 13 invisible door handle; 14 sealing strips; 15 a rear door; 16 air supplement doors; 17 a front door; 18. 23 are all countersunk bolts; 19. 20 parts of,
21. 22 are stainless steel pipes; 24 stainless steel corner fittings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, in order to achieve the above object, the present invention adopts the following technical solutions: a tobacco leaf oven convenient for gas adsorption detection comprises a box body (6) and a heating device (10), and is characterized in that the heating device (10) is installed on the box body (6), a circulating fan (9) is arranged above the heating device (10), a moisture discharging window (1) is arranged above the box body (7), a lifting type return air baffle device (8) and two adjustable latches (5) are installed on the side edge of the box body (6), six hinges (4) are arranged on two sides of the box body (6), two observation windows and sun-shading boards (2) and two invisible door handles (13) are arranged on the box body (6), a sampling port (3) is arranged below the observation windows and the sun-shading boards (2), two air sampling ports (7) are arranged on the side surface of the box body (6), an under frame (11) is arranged below the box body (6), and four nylon idler wheels (12) are installed below the under, the front and the back of the box body (6) are respectively provided with a rear door (15) and a front door (17), the rear door (15) and the front door (17) are respectively provided with a sealing strip (14) special for automobiles, and meanwhile, the top of the box body (6) is provided with an air supplement door (16).
The rated drying amount of the oven is about 25 kg.
Specifically, the size of the moisture exhaust window (1) is 220mm multiplied by 150mm, and the moisture exhaust window is made of an aluminum alloy material and has a louver structure; the observation window and the sun shield (2) are composed of double-layer toughened glass with the thickness of 5mm and a sun shield with the thickness of 0.8mm, and the size specification of the observation window and the sun shield is 600mm multiplied by 400 mm.
Specifically, the sampling port (3) can be used for placing an adsorbing material and an organic solvent to qualitatively detect aroma components emitted by the tobacco leaves in the baking process.
Specifically, the type of the circulating fan (9) is CKF-C2.5# axial flow high temperature resistant wet fan, the voltage is 380V, the full pressure is 120-160Pa, the power is 180W, the rotating speed is 2900r/min, and the air volume is 1400-2200 cubic meter/h.
Specifically, the heating devices (10) are four groups of heating plate supports, the single group power is 0.6KW, the total power is 2.4KW, the voltage is 220V, and the four groups of heating devices are connected through M8X50 countersunk zinc-plated bolts.
Specifically, the four groups of heating plate supports of the heating device (10) are two sets of heating plate supports 1 and two sets of heating plate supports
A board holder 2; both the heating plate brackets (18) and (23) in the heating plate brackets (1) and (2) are type 4-phi 12-M8X50 countersunk head bolts; the (19) and (21) of the heating plate brackets 1 and 2 are 8 stainless steel square tubes with the model number of 20 multiplied by 20-340; heating plate support 1
In (20), the model is a stainless steel pipe with the size of 20 multiplied by 20-805, 2 pieces; the type of the heating plate bracket 2 is (22)
20X 20-990 stainless steel tube, 2 pieces; the heating plate brackets 1 and 2 contain 50 stainless steel corner pieces of-0.5 multiplied by 15 multiplied by 30; the power of each group of the four groups of heating plate supports is 0.6KW, the total power is 2.4KW, the voltage is 220V, and the four groups of heating devices are connected through M8X50 countersunk zinc-plated bolts.
Specifically, the number of nylon gyro wheel (12) is four, two directional, 2 universal (taking the auto-lock), and its diameter is 120 mm.
Specifically, the inside dimension of the air supplement door (16) is 300mm multiplied by 150mm, and the rotary fan blade is made of cold-rolled steel plates and provided with stamping reinforcing ribs.
When in work, the front door 17 is opened through the adjustable lock catch 5, the door 17 is provided with the observation window and the sun shield 2, so that the baking condition of the tobacco leaves in the box body 6 can be observed, the tobacco leaves to be baked are placed on the tobacco hanging frame 19 in the box body 6,
tobacco leaves are uniformly distributed in the box body 6, the door of the box body 6 is fixed through the adjustable lock catch 5, the door 17 of the box is closed, and the box is opened
The baking switch is switched on to bake the tobacco leaves in the box body 6, the moisture of the tobacco leaves is continuously evaporated by the heating device 10 and the circulating fan 9,
then the moisture is discharged out of the box through the moisture discharging window 1; the adsorption material and the organic solvent can be placed through the sampling port 3 on the box body
The aroma components emitted by the tobacco leaves in the baking process are qualitatively detected; the heating devices 10 are four groups of heating devices, and the four groups of heating devices are connected by M8X50 countersunk galvanized bolts in a reasonable ratio, so that the tobacco leaves can be baked more fully and are more uniform; after the circulating fan 9 works, the heat generated by the electric heating wire in the heating box 6 is blown upwards along with the moisture removing window
1, so that the tobacco leaves in the box body 6 can be roasted more quickly and efficiently; the tobacco leaves are cured and removed from the oven through the rear door 15.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention is not limited to these details without departing from the scope of the present invention
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A tobacco leaf oven convenient for gas adsorption detection comprises a box body (6) and a heating device (10), and is characterized in that the heating device (10) is installed on the box body (6), a circulating fan (9) is arranged above the heating device (10), a moisture discharging window (1) is arranged above the box body (7), a lifting return air baffle device (8) and two adjustable latches (5) are installed on the side edge of the box body (6), six hinges (4) are arranged on two sides of the box body (6), two observation windows and sun-shading boards (2) and two invisible door handles (13) are arranged on the box body (6), a sampling port (3) is arranged below the observation windows and sun-shading boards (2), two air sampling ports (7) are arranged on the side surface of the box body (6), an under frame (11) is arranged below the box body (6), and four nylon idler wheels (12) are installed below the under, the front and the back of the box body (6) are respectively provided with a rear door (15) and a front door (17), the rear door (15) and the front door (17) are respectively provided with a sealing strip (14) special for automobiles, and meanwhile, the top of the box body (6) is provided with an air supplement door (16).
2. A tobacco baking oven according to claim 1 wherein the nominal amount of drying is around 25 kg.
3. A tobacco baking oven according to claim 1, characterized in that the size of the moisture exhausting window (1) is 220mm x 150mm, and the moisture exhausting window is made of aluminum alloy and has a louver structure; the observation window and the sun shield (2) are composed of double-layer toughened glass with the thickness of 5mm and a sun shield with the thickness of 0.8mm, and the size specification of the observation window and the sun shield is 600mm multiplied by 400 mm.
4. A tobacco baking oven according to claim 1, characterized in that the sampling port (3) can be used for placing adsorbing materials and organic solvents to qualitatively detect the aroma components emitted from the tobacco leaves during the baking process.
5. The tobacco baking oven as claimed in claim 1, wherein the type of the circulating fan (9) is CKF-C2.5# axial flow high temperature resistant wet fan, voltage is 380V, full pressure is 120-.
6. The tobacco oven according to claim 1, characterized in that said heating means (10) are four groups of heating plate supports, single group power is 0.6KW, total power is 2.4KW, voltage is 220V, and four groups of heating means are connected by M8X50 countersunk zinc bolts.
7. A tobacco baking oven according to claim 7, characterized in that, the four sets of heating plate supports of the heating device (10) are two sets of heating plate supports 1 and two sets of heating plate supports 2; heating plate supports 1 and 2 (18 and 23) are all 4-phi 12-M8X50 countersunk bolts, heating plate supports 1 and 2 (19 and 21) are both 20X 20-340 stainless steel square tubes, 8 in total, heating plate support 1 (20) is 20X 20-805 stainless steel tubes and 2 in total, heating plate support 2 (22) is 20X 20-990 stainless steel tubes and 2 in total, heating plate supports 1 and 2 both contain-0.5X 15X 30 stainless steel corner fittings and 50 in total, the power of each of the four groups of heating plate supports is 0.6KW, the total power is 2.4KW, the voltage is 220V, and the four groups of heating devices are connected by M8X50 countersunk zinc-plated bolts.
8. A tobacco roaster as claimed in claim 1 wherein the nylon rollers (12) are four in number, two in orientation, 2 universal (with self locking) and all 120mm in diameter.
9. A tobacco baking oven according to claim 1, characterized in that the inner dimension of the air supply door (16) is 300mm x 150mm, the rotary fan blade is made of cold-rolled steel plate and provided with stamping reinforcing ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178710.9A CN111084404A (en) | 2020-03-14 | 2020-03-14 | Tobacco leaf oven convenient to gas adsorption detects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178710.9A CN111084404A (en) | 2020-03-14 | 2020-03-14 | Tobacco leaf oven convenient to gas adsorption detects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111084404A true CN111084404A (en) | 2020-05-01 |
Family
ID=70400585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010178710.9A Pending CN111084404A (en) | 2020-03-14 | 2020-03-14 | Tobacco leaf oven convenient to gas adsorption detects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111084404A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02312579A (en) * | 1989-05-30 | 1990-12-27 | Japan Tobacco Inc | Drying of leaf tobacco and system therefor |
| CN102589257A (en) * | 2012-03-28 | 2012-07-18 | 江苏科地现代农业有限公司 | Electric heating and drying equipment |
| CN202494280U (en) * | 2011-12-07 | 2012-10-17 | 成都东和工业有限责任公司 | Air source heat pump heating condensing dehumidifying drying device |
| CN102967672A (en) * | 2012-11-26 | 2013-03-13 | 上海烟草集团有限责任公司 | Analytical method and gathering device of tobacco escaping substance in threshing and redrying processes |
| CN204377889U (en) * | 2014-10-30 | 2015-06-10 | 郑州在田农业科学技术研究院 | A kind of multifunctional electric energy barn |
| CN204422287U (en) * | 2015-03-18 | 2015-06-24 | 安徽中烟工业有限责任公司 | A kind of tobacco curing barn flavor component capturing device |
| CN107822190A (en) * | 2017-10-25 | 2018-03-23 | 哈密市伊州区职业高中 | A kind of flue-cured tobacco modulating equipment |
| CN208490820U (en) * | 2018-05-07 | 2019-02-15 | 湖南省烟草公司永州市公司 | A kind of oven for flue-cured tobacco experiment |
| CN212574116U (en) * | 2020-03-14 | 2021-02-23 | 河南省恒景环境科技有限公司 | Tobacco leaf oven convenient to gas adsorption detects |
-
2020
- 2020-03-14 CN CN202010178710.9A patent/CN111084404A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02312579A (en) * | 1989-05-30 | 1990-12-27 | Japan Tobacco Inc | Drying of leaf tobacco and system therefor |
| CN202494280U (en) * | 2011-12-07 | 2012-10-17 | 成都东和工业有限责任公司 | Air source heat pump heating condensing dehumidifying drying device |
| CN102589257A (en) * | 2012-03-28 | 2012-07-18 | 江苏科地现代农业有限公司 | Electric heating and drying equipment |
| CN102967672A (en) * | 2012-11-26 | 2013-03-13 | 上海烟草集团有限责任公司 | Analytical method and gathering device of tobacco escaping substance in threshing and redrying processes |
| CN204377889U (en) * | 2014-10-30 | 2015-06-10 | 郑州在田农业科学技术研究院 | A kind of multifunctional electric energy barn |
| CN204422287U (en) * | 2015-03-18 | 2015-06-24 | 安徽中烟工业有限责任公司 | A kind of tobacco curing barn flavor component capturing device |
| CN107822190A (en) * | 2017-10-25 | 2018-03-23 | 哈密市伊州区职业高中 | A kind of flue-cured tobacco modulating equipment |
| CN208490820U (en) * | 2018-05-07 | 2019-02-15 | 湖南省烟草公司永州市公司 | A kind of oven for flue-cured tobacco experiment |
| CN212574116U (en) * | 2020-03-14 | 2021-02-23 | 河南省恒景环境科技有限公司 | Tobacco leaf oven convenient to gas adsorption detects |
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Application publication date: 20200501 |
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