CN208318211U - A kind of four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus - Google Patents
A kind of four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus Download PDFInfo
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- CN208318211U CN208318211U CN201820918687.0U CN201820918687U CN208318211U CN 208318211 U CN208318211 U CN 208318211U CN 201820918687 U CN201820918687 U CN 201820918687U CN 208318211 U CN208318211 U CN 208318211U
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- Prior art keywords
- conveyer belt
- tobacco leaf
- motor
- transverse conveyor
- bevel gear
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- 241000208125 Nicotiana Species 0.000 title claims abstract description 47
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 47
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 30
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 6
- 230000001095 motoneuron effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000000391 smoking effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000779 smoke Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000028514 leaf abscission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Manufacturing Of Cigar And Cigarette Tobacco (AREA)
Abstract
The utility model discloses a kind of four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus, device includes controller, driving motor, rotary shaft, longitudinal conveyer belt, transverse conveyor, stops column.In dress cigarette and Tobacco Leaf Curing, each driving motor speed of service can be independently regulated and controled by controller, rotary shaft drives longitudinal conveyer belt and transverse conveyor to run according to certain orientation under driving motor effect.Stop column to be set on each conveyer belt, for fixing and driving tobacco rod and tobacco leaf to run with conveyer belt, by the successively linking between transverse conveyor and longitudinal conveyer belt, tobacco leaf is made to carry out shuttling movement according to serpentine path in cigarette-filling house.In conjunction with the tobacco leaf state of different water smoking periods, regulate and control the speed of tobacco leaf circular flow in cigarette-filling house, the non-uniform situation in epidemic disaster field that different location tobacco leaf is in baking process can be effectively improved, to guarantee tobacco leaf entirety baking properties, while the amount of labour used and labor intensity during filling cigarette can be reduced.
Description
Technical field
The utility model relates to technical field of tobacco modulation, and in particular to a kind of interior circulation of four layers of dress cigarette bulk curing barn tobacco leaf
Device.
Background technique
Bulk curing barn has the characteristics that saving of work and time, saving fuel, cured tobacco leaf are quality in tobacco flue-curing, gradually fits
Current tobacco flue-curing scale, specialization, standardized trend have been answered, current construction modern tobacco agriculture, development profession are become
Change the important equipment of baking modulation.Especially four layers dress cigarette bulk curing barn application, promoted smoke filling density, reduce construction at
Originally, reducing bulk curing barn occupied area etc. has further positive effect.
The bulk curing barn of either three layers or four layers dress cigarette, is all made of forced ventilation, hot air circulation in baking process
Mode promote leaf abscission dry.When hot wind is recycled in cigarette-filling house across tobacco leaf, since smoke filling density has differences
And the difference of level locating for tobacco leaf causes air flow method uneven, to generate Level temperature difference and vertical temperature-difference in cigarette-filling house.
With the progress of baking process, it is aobvious that this inhomogeneities bring epidemic disaster non-uniform phenomenon can get over utility model, and then influences
The overall quality of tobacco flue-curing.
Corresponding research has been carried out for the non-uniform problem in flow field, many scholars in above-mentioned bulk curing barn, Jiang Kai's et al.
It is right in document " cured tobacco flow translation type bulk flue-curing barn First Report of Studies " (being published in " Chinese Tobacco Science " 2010, the 31, the 2nd phase)
The cigarette-filling house of bulk curing barn is laid out again for hot cell, circulation air delivery duct, optimizes circulating fan running environment.This is practical
It is novel using tobacco leaf itself as research object, be based on existing four layers of dress cigarette bulk curing barn, devising one kind can make tobacco leaf in cigarette-filling house
The device inside recycled reaches balanced different location by different times tobacco leaf circular flow speed in control baking process
The purpose of epidemic disaster environment locating for tobacco leaf ensure that the total quality of tobacco flue-curing, while can reduce dress cigarette to a certain extent
The amount of labour used and labor intensity.
Utility model content
The utility model proposes a kind of four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus, solve existing barn dress cigarette
Density have differences and tobacco leaf locating for the difference of level cause air flow method uneven, will lead to occur plane temperature in cigarette-filling house
The problem of difference and vertical temperature-difference.
Realizing the technical solution of the utility model is: a kind of four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus, including control
Device processed, driving motor and longitudinal conveyer belt, the controller are placed on outside bulk curing barn using wall-mounted, and driving motor is fixed
At the top of bulk curing barn, driving motor includes motor I and motor II, and motor I is connected with longitudinal conveyer belt, motor II and laterally biography
Band is sent to be connected, the longitudinal direction conveyer belt and transverse conveyor are equipped with blocking column.
The motor I is equipped with shaft coupling I, is connected with bevel gear I on shaft coupling I, and bevel gear I is connected with bevel gear II,
Shaft I is connected on bevel gear II, shaft I is connected with bevel gear III, and bevel gear III is connected with bevel gear IV, longitudinal conveyer belt with
Spur gear I is connected, and the bevel gear IV is mounted on the axis of spur gear I.
The motor II is equipped with shaft coupling II, and shaft coupling II is equipped with bevel gear A, and bevel gear A is connected with bevel gear B,
Bevel gear B is equipped with shaft II, is successively arranged spur gear A, spur gear B, spur gear C and straight-tooth from top to bottom in the shaft II
It takes turns on D.
The transverse conveyor successively includes transverse conveyor I, transverse conveyor II, III and of transverse conveyor from top to bottom
Transverse conveyor IV；Spur gear A and spur gear C are connected with the upper end of transverse conveyor I and transverse conveyor III respectively, spur gear
B and spur gear D are connected with the lower end of transverse conveyor II and transverse conveyor IV respectively.
Lateral distance between the longitudinal direction conveyer belt and transverse conveyor is 8 ~ 6cm.
Each plane is set as four to the transverse conveyor from top to bottom, and one end end of four transverse conveyors is flat
Together, the length of intermediate two transverse conveyors is less than the length of top layer and lowest level transverse conveyor, the longitudinal direction conveyer belt
Each plane is set as three, and the concordant one end in transverse conveyor end is equipped with longitudinal conveyer belt I, longitudinal conveyer belt I and motor I
A is connected, and the end of intermediate shorter two transverse conveyors is equipped with longitudinal conveyer belt II, and longitudinal conveyer belt II is connected with I B of motor,
The end of top layer and lowest level transverse conveyor is equipped with longitudinal conveyer belt III, and longitudinal conveyer belt III is connected with I C of motor.
A blocking column, longitudinal conveyer belt III are fixed every 80 ~ 60cm on the longitudinal direction conveyer belt I and longitudinal conveyer belt II
On every 120 ~ 90cm fix a blocking column, stopping angle between column and longitudinal conveyer belt is 90 °；Cross drive take every
16 ~ 12cm determines 1 blocking column, and stopping angle between column and transverse conveyor is 60 ° ~ 30 °.
Four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus, concrete operation step are as follows:
It (1) is 15.0 ~ 5.0cm/s, I C of motor by the speed of service that I A of motor and I B of motor is arranged in controller when filling cigarette
The speed of service be 45.0 ~ 15.0cm/s, the speed of service of motor II is 3.0 ~ 1.0cm/s；
(2) turn yellow early period and mid-term stage, is 2.0 ~ 1.6cm/s by the speed of service that motor II is arranged in controller, if
Set I A of motor, I B of motor the speed of service be 10.0 ~ 8.0cm/s, setting I C of motor the speed of service be 30.0 ~ 24.0cm/s；
(3) turn yellow the later period, be 1.5 ~ 1.1cm/s by the speed of service that motor II is arranged in controller, I A of motor, electricity are set
The speed of service of I B of machine is 7.5 ~ 5.5cm/s, and the speed of service of setting I C of motor is 22.5 ~ 16.5cm/s；
(4) the Earlier stage of fixing color stage is 1.0 ~ 0.8cm/s by the speed of service that motor II is arranged in controller, motor I is arranged
A, the speed of service of I B of motor is 5.0 ~ 4.0cm/s, and the speed of service of setting I C of motor is 15.0 ~ 12.0cm/s；
(5) the Earlier stage of fixing color stage terminates to be later 0.5 ~ 0.3cm/s by the speed of service that motor II is arranged in controller, if
Set I A of motor, the speed of service of I B of motor is 2.5 ~ 1.5cm/s, the speed of service of I C of motor is 7.5 ~ 4.5cm/s；When tobacco leaf shape
When state reaches slight hook point crimping, the speed of service of I A of motor, motor II, I B of motor, I C of motor are gradually adjusted by controller
Control closes driving motor to 0 later.
The beneficial effects of the utility model are: circulation in four layers of dress cigarette bulk curing barn tobacco leaf of one kind of the utility model design
Device is that four layers of dress cigarette bulk curing barn based on existing popularization build parameter, it is only necessary to transform the extension cigarette beam in cigarette-filling house as band
Transmission device recycles tobacco leaf in baking process, promotes warm and humid field locating for the tobacco leaf of different location more uniform, together
When can promote tobacco leaf desiccation to a certain extent, improve baking efficiency；When filling cigarette, it can run, complete by conveyer belt
Cigarette operation is filled, the labor intensity and the amount of labour used of baking operation are reduced.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is longitudinal conveyer belt scheme of installation.
Fig. 3 is transverse conveyor scheme of installation.
Specific embodiment
Below in conjunction with the utility model embodiment, the technical solution of the utility model is clearly and completely described,
Obviously, the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.It is practical based on this
Embodiment in novel, those of ordinary skill in the art's every other reality obtained under that premise of not paying creative labor
Example is applied, is fallen within the protection scope of the utility model.
As shown in Figure 1-3, a kind of four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus, including controller 1, driving motor and
Longitudinal conveyer belt, the controller 1 are placed on outside bulk curing barn using wall-mounted, and driving motor is fixed on bulk curing barn top
Portion, driving motor include motor I 2 and motor II 9, and motor I 2 is connected with longitudinal conveyer belt 4, motor II 9 and 5 phase of transverse conveyor
Even, longitudinal conveyer belt 4 and transverse conveyor 5 are mounted on cigarette-filling house or so opposed inner walls and intermediate support two sides, cigarette-filling house's inner wall
It is equipped with connecting rod, connecting rod is equipped with bearing, and longitudinal conveyer belt is connected with bearing, the longitudinal direction conveyer belt 4 and cross drive
Band 5, which is equipped with, stops column 6, controller independent control motor I 2 and motor II 9.
The motor I 2 is equipped with I 2-1 of shaft coupling, is connected with I 2-2 of bevel gear on I 2-1 of shaft coupling, I 2-2 of bevel gear with
II 2-3 of bevel gear is connected, and I 2-4 of shaft is connected on II 2-3 of bevel gear, I 2-4 of shaft is connected with III 2-5 of bevel gear, bevel gear
III 2-5 is connected with IV 2-6 of bevel gear, and longitudinal conveyer belt 4 is connected with I 2-7 of spur gear, and IV 2-6 of bevel gear is mounted on straight-tooth
On the axis for taking turns I 2-7.By the mutual transmission between gear, guarantee that longitudinal conveyer belt operates normally.
The motor II 9 be equipped with II 9-1 of shaft coupling, II 9-1 of shaft coupling be equipped with bevel gear A9-2, bevel gear A9-2 with
Bevel gear B9-3 is connected, and bevel gear B9-3 is equipped with II 9-4 of shaft, is successively arranged straight-tooth from top to bottom on II 9-4 of shaft
It takes turns on A9-5, spur gear B9-6, spur gear C9-7 and spur gear D9-8.
The transverse conveyor 5 successively includes transverse conveyor I 54, transverse conveyor II 53, cross drive from top to bottom
Band III 52 and transverse conveyor IV 51；Spur gear A9-5 and spur gear C9-7 respectively with transverse conveyor I 54 and transverse conveyor
III 52 upper end is connected, and spur gear B9-6 and spur gear D9-8 are respectively and under transverse conveyor II 53 and transverse conveyor IV 51
End is connected, so that the direction of transfer of adjacent transverse conveyer belt is on the contrary, the direction according to arrow 7 is run.
Lateral distance between the longitudinal direction conveyer belt 4 and transverse conveyor 5 is 8 ~ 6cm.
Each plane is set as four to the transverse conveyor 5 from top to bottom, and four transverse directions are arranged in each dress smoke stratification plane
Conveyer belt (cigarette-filling house is the design of 2 tunnel, 4 floor, and tobacco rod both ends are individually positioned in two cross drives and take), four transverse conveyors
One end end it is concordant, the length of intermediate two transverse conveyor, that is, transverse conveyors II 53 and transverse conveyor III 52 is less than cross
To the length of conveyer belt I 54 and transverse conveyor IV 51, transverse conveyor I 54 is consistent with the length of transverse conveyor IV 51, horizontal
Consistent with the length of transverse conveyor III 52 to conveyer belt II 53, the longitudinal direction each plane of conveyer belt 4 is set as three, laterally
The concordant one end in 5 end of conveyer belt is equipped with longitudinal conveyer belt I 41, and longitudinal conveyer belt I 41 is connected with I A21 of motor, transverse conveyor
II 53 and the end of transverse conveyor III 52 be equipped with longitudinal conveyer belt II 42, longitudinal conveyer belt II 42 is connected with I B23 of motor, cross
Longitudinal conveyer belt III 43, longitudinal conveyer belt III 43 and I C24 of motor are equipped with to the end of conveyer belt I 54 and transverse conveyor IV 51
It is connected.
A blocking column 6, Zong Xiangchuan is fixed every 80 ~ 60cm on the longitudinal direction conveyer belt I 41 and longitudinal conveyer belt II 42
It send and fixes a blocking column 6 every 120 ~ 90cm on band III 43, stopping angle between column 6 and longitudinal conveyer belt 43 is 90 °；Laterally
1 blocking column 6 is determined every 16 ~ 12cm on conveyer belt 5, and stopping angle between column 6 and transverse conveyor is 60 ° ~ 30 °.It is longitudinal to pass
The restriction for passing through distance and speed between band and transverse conveyor is sent, follows tobacco leaf in cigarette-filling house according to serpentine path 8
Ring.
It is 15.0 ~ 5.0cm/s, motor by the speed of service that I A21 of motor and I B23 of motor is arranged in controller 1 when filling cigarette
The speed of service of I C24 is 45.0 ~ 15.0cm/s, and the speed of service of motor II 9 is 3.0 ~ 1.0cm/s.
Four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus, concrete operation step in baking process are as follows:
(1) turn yellow early period and mid-term stage, is 2.0 ~ 1.6cm/s by the speed of service that motor II 9 is arranged in controller 1,
Be arranged I A21 of motor, I B23 of motor the speed of service be 10.0 ~ 8.0cm/s, setting I C24 of motor the speed of service be 30.0 ~
24.0cm/s；
(2) turn yellow the later period, be 1.5 ~ 1.1cm/s by the speed of service that motor II 9 is arranged in controller 1, motor I is set
A21, I B23 of motor the speed of service be 7.5 ~ 5.5cm/s, setting I C24 of motor the speed of service be 22.5 ~ 16.5cm/s；
(3) the Earlier stage of fixing color stage is 1.0 ~ 0.8cm/s, setting electricity by the speed of service that motor II 9 is arranged in controller 1
I A21 of machine, I B23 of motor the speed of service be 5.0 ~ 4.0cm/s, setting I C24 of motor the speed of service be 15.0 ~ 12.0cm/s；
(4) the Earlier stage of fixing color stage terminates to be later 0.5 ~ 0.3cm/s by the speed of service that motor II 9 is arranged in controller 1,
I A21 of motor is set, the speed of service of I B23 of motor is 2.5 ~ 1.5cm/s, the speed of service of I C24 of motor is 7.5 ~ 4.5cm/s；
When tobacco leaf state reach it is slight hook sharp crimping when, by controller 1 by I A21 of motor, motor II 9, I B23 of motor, I C24 of motor
The speed of service gradually regulate and control to 0, close driving motor later.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (7)
1. a kind of four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus, it is characterised in that: including controller (1), driving motor and
Longitudinal conveyer belt, the controller (1) are placed on outside bulk curing barn using wall-mounted, and driving motor is fixed on bulk curing barn top
Portion, driving motor include motor I (2) and motor II (9), and motor I (2) is connected with longitudinal conveyer belt (4), motor II (9) and cross
It is connected to conveyer belt (5), the longitudinal direction conveyer belt (4) and transverse conveyor (5) are equipped with and stop column (6).
2. four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus according to claim 1, it is characterised in that: the motor I
(2) it is equipped with shaft coupling I (2-1), is connected with bevel gear I (2-2) on shaft coupling I (2-1), bevel gear I (2-2) and bevel gear II
(2-3) is connected, and is connected on bevel gear II (2-3) shaft I (2-4), shaft I (2-4) is connected with bevel gear III (2-5), umbrella tooth
III (2-5) of wheel is connected with bevel gear IV (2-6), and longitudinal conveyer belt (4) is connected with spur gear I (2-7), the IV (2- of bevel gear
6) it is mounted on the axis of spur gear I (2-7).
3. four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus according to claim 1, it is characterised in that: the motor II
(9) it is equipped with shaft coupling II (9-1), shaft coupling II (9-1) is equipped with bevel gear A(9-2), bevel gear A(9-2) and bevel gear B
(9-3) is connected, bevel gear B(9-3) it is equipped with shaft II (9-4), it is successively arranged straight-tooth from top to bottom on the shaft II (9-4)
Take turns A(9-5), spur gear B(9-6), spur gear C(9-7) and spur gear D(9-8) on.
4. four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus according to claim 3, it is characterised in that: described laterally to pass
Send band (5) successively includes transverse conveyor I (54), transverse conveyor II (53), transverse conveyor III (52) and cross from top to bottom
To conveyer belt IV (51)；Spur gear A(9-5) and spur gear C(9-7) respectively with transverse conveyor I (54) and transverse conveyor III
(52) upper end is connected, spur gear B(9-6) and spur gear D(9-8) respectively with transverse conveyor II (53) and transverse conveyor IV
(51) lower end is connected.
5. four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus according to claim 1, it is characterised in that: longitudinal biography
Sending the lateral distance between band (4) and transverse conveyor (5) is 8 ~ 6cm.
6. four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus according to claim 1, it is characterised in that: described laterally to pass
Sending band (5), each plane is set as four from top to bottom, and one end end of four transverse conveyors is concordant, and intermediate two laterally pass
The length for sending the length of band to be less than top layer and lowest level transverse conveyor, described longitudinal direction conveyer belt (4) each plane are set as
Three, the concordant one end in transverse conveyor (5) end is equipped with longitudinal conveyer belt I (41), longitudinal conveyer belt I (41) and I A of motor
(21) be connected, the end of intermediate shorter two transverse conveyors is equipped with longitudinal conveyer belt II (42), longitudinal conveyer belt II (42) with
I B(23 of motor) it is connected, the end of top layer and lowest level transverse conveyor is equipped with longitudinal conveyer belt III (43), longitudinal conveyer belt
III (43) are connected with I C(24 of motor).
7. four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus according to claim 6, it is characterised in that: longitudinal biography
It send and fixes a blocking column (6) every 80 ~ 60cm on band I (41) and longitudinal conveyer belt II (42), on longitudinal conveyer belt III (43)
A blocking column (6) is fixed every 120 ~ 90cm, stopping angle between column (6) and longitudinal conveyer belt (43) is 90 °；Cross drive
1 blocking column (6) is determined every 16 ~ 12cm on band (5), and stopping angle between column (6) and transverse conveyor is 60 ° ~ 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820918687.0U CN208318211U (en) | 2018-06-14 | 2018-06-14 | A kind of four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820918687.0U CN208318211U (en) | 2018-06-14 | 2018-06-14 | A kind of four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208318211U true CN208318211U (en) | 2019-01-04 |
Family
ID=64770615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820918687.0U Expired - Fee Related CN208318211U (en) | 2018-06-14 | 2018-06-14 | A kind of four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN208318211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108669620A (en) * | 2018-06-14 | 2018-10-19 | 河南农业大学 | A kind of four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus |
-
2018
- 2018-06-14 CN CN201820918687.0U patent/CN208318211U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108669620A (en) * | 2018-06-14 | 2018-10-19 | 河南农业大学 | A kind of four layers of dress cigarette bulk curing barn tobacco leaf internal circulation apparatus |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190104 |