CN109405506A - A kind of incrementally hot wind counter-current drying device and method - Google Patents
A kind of incrementally hot wind counter-current drying device and method Download PDFInfo
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- CN109405506A CN109405506A CN201811376552.7A CN201811376552A CN109405506A CN 109405506 A CN109405506 A CN 109405506A CN 201811376552 A CN201811376552 A CN 201811376552A CN 109405506 A CN109405506 A CN 109405506A
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- ventilation
- hot wind
- tunnel
- ventilation tunnel
- incrementally
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- 238000001035 drying Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title abstract description 10
- 238000009423 ventilation Methods 0.000 claims abstract description 95
- 239000000463 material Substances 0.000 claims abstract description 7
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 4
- 238000012806 monitoring device Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 244000061176 Nicotiana tabacum Species 0.000 claims 1
- 230000002411 adverse Effects 0.000 abstract description 4
- 241000208125 Nicotiana Species 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
- F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/22—Tobacco leaves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a kind of incrementally hot wind counter-current drying device and method, including conveyer belt, ventilation tunnel is equipped with above conveyer belt, ventilation tunnel wind direction is opposite with belt direction, ventilation tunnel is equipped with several ventilation openings, and each ventilation opening is in same level so that ventilation tunnel sectional area it is different or along wind direction in certain rule variation, hot wind from each ventilation opening enters ventilation tunnel simultaneously, make air quantity in ventilation tunnel along relative to material adverse current to being incremental.The present invention can speed up surface of material moisture and spread into hot wind, to improve the drying and dewatering efficiency of device.
Description
Technical field
The present invention relates to a kind of drying device, especially a kind of incrementally hot wind counter-current drying device further relates to its drying
Method.
Background technique
Traditional tunnel type novel tobacco drying materials process equipment is to make to spread out using conveyer belt lower part temp.-increasing heating method
The moisture being layered on above conveyer belt in serous coat recycles and serous coat conveying side because spilling in overdraught tunnel outside evaporating by heat
The moisture evaporated is taken out of equipment to the hot wind of opposite (adverse current) and realizes dewatering process requirement purpose, as shown in Figure 1, hot wind
3 enter ventilation tunnel 4 from air supply line 5, then are discharged by exhaust outlet 6, and the serous coat 2 on conveyer belt 1 passes through the heat in ventilation tunnel 4
Wind 3 is inversely dry.
When using above-mentioned traditional hot wind counter-flow pattern, the hot blast temperature, humidity, wettability power in ventilation tunnel are bent
Line is shown in that A, B and C in Fig. 2, A indicate that hot blast temperature distribution curve, B indicate that hot wind humidity distribution curve, C indicate that hot wind is inhaled respectively
Wet power curve, X-axis indicate distance of the ventilation tunnel each point away from exhaust outlet on hot wind flow direction, and Y-axis indicates wind-warm syndrome, wet
Degree and wettability power parameter.Along conveying tape motion direction, hot blast temperature is incremented by, and humidity is successively decreased, and wettability power successively decreases, and all in flat
Sliding variation.Such hot wind parameter distribution, closer to Fig. 1 ventilation tunnel left end, the wettability power of hot wind is weaker.Drying efficiency compared with
Difference, device water separation capability is not good enough, influences the processing quality of reconstituted tobacoo.Therefore, it is necessary to be improved to the device.
Summary of the invention
In order to solve the above-mentioned technical problem, the present invention is directed to propose a kind of incrementally hot wind counter-current drying device and method,
Hot wind wettability power is improved by the way of many places air inlet in ventilation tunnel, while building the regions of turbulent flow of adverse current hot wind, with
Hot air drying rate is improved, achievees the purpose that fast dewatering.Technical solution of the present invention is specific as follows:
A kind of incrementally hot wind counter-current drying device, including conveyer belt, conveyer belt top are equipped with ventilation tunnel, ventilation tunnel wind direction
With belt direction on the contrary, ventilation tunnel is equipped with several ventilation openings, and each ventilation opening is in same level, so that logical
Wind tunnel sectional area is different or changes along wind direction in certain rule, and hot wind enters ventilation tunnel from each ventilation opening simultaneously.
Further, several ventilation openings on ventilation tunnel in staged be distributed, and ventilation tunnel sectional area along wind direction by
It is cumulative big.
Further, ventilation tunnel one end is equipped with air supply line, and the other end is equipped with exhaust outlet, and the hot wind of air supply line passes through
Each ventilation opening imports ventilation tunnel, and the hot wind imported by each ventilation opening at a time mixes, and air quantity along wind direction by
Gradually it is superimposed.
Further, each ventilation opening is equipped with volume damper.
Further, from conveyer belt discharging end to feed end, air quantity is gradually increased in ventilation tunnel, is equipped with below conveyer belt
Heating device.
Further, several temperature monitoring device and humidity detection device, several temperature monitorings are additionally provided in ventilation tunnel
Device, humidity detection device and volume damper are connect with controller.
Incrementally hot air reverse based on above-mentioned apparatus drains off drying method, is carried out as follows:
Sheet material on conveyer belt enters ventilation tunnel, and ventilation tunnel wind direction is with belt direction on the contrary, hot wind is simultaneously from each
A ventilation opening enters ventilation tunnel, and the hot wind that each ventilation opening enters is sequentially overlapped along wind direction, mutually collides shape in regional area
At turbulent flow, so that hot wind constantly disturbs, and from conveyer belt upstream end to output end, the hot blast temperature fluctuation in ventilation tunnel
Formula increases, and moisture fluctuation formula reduces.
Further, the sheet material is reconstituted tobacco.
Compared with prior art, beneficial effects of the present invention are as follows:
(1) for the device of the invention ventilation tunnel from air inlet to exhaust outlet, air quantity is incremental, stepped ventilation tunnel structure energy
The wind speed at tunnel different cross-sectional is set to reach unanimity.
(2) the multiple air inlets of setting of the invention are constantly promoted the heat in ventilation tunnel by the hot wind of multiple air inlets
Air temperature, while reducing humidity and improving the wettability power of hot wind.The hot wind that many places are supplemented into causes adverse current hot wind constantly to be disturbed
It is dynamic, promote the moisture of serosa surface to accelerate to be diffused into hot wind, to improve rate of drying.Compared to traditional drying means, do
The dry time shortens at least 20%.
(3) the device of the invention can strengthen the uniform drying and dewatering of hot wind, by incrementally hot wind counter-current drying to reverse
The reconstituted tobacco thin slice of movement carries out uniform, fast dewatering, so that the water separation capability of device is improved, the processing of reconstituted tobacoo
Quality gets a promotion.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing drying device；
Fig. 2 is the temperature, humidity, wettability power change curve of the hot wind in existing drying device；
Fig. 3 is the structural schematic diagram of drying device of the invention；
Fig. 4 is the temperature, humidity, wettability power change curve of the hot wind of drying device of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, carries out clearly and completely to the technical solution in the present embodiment
Description, it is clear that described embodiment is only rather than whole example to a part of example of the present invention.Based on the present invention
In embodiment, those of ordinary skill in the art's every other implementation obtained under that premise of not paying creative labor
Example, shall fall within the protection scope of the present invention.
Embodiment 1
As shown in figure 3, the incrementally hot wind counter-current drying device dry for reconstituted tobacoo of the present embodiment, including conveyer belt 1,
It is uniformly provided with existing heating device below conveyer belt 1, ventilation tunnel 4 is equipped with above conveyer belt 1, ventilation tunnel 4 is equipped with 4
Ventilation opening, air supply line 5 and 4 ventilation opening are connected to, and hot wind enters ventilation tunnel 4 from each ventilation opening, in the present embodiment, air feed
5 lower shape of pipeline and 4 shape of ventilation tunnel match.4 ventilation openings are arranged in staged, and the first ventilation opening 8 is close to air duct
Road 5 is arranged, and recently apart from conveyer belt 1, the second ventilation opening 9, third venting mouth 10 and the 4th ventilation opening 11 are at a distance from conveyer belt 1
It is gradually increased, ventilation tunnel sectional area is gradually increased along wind direction.
4 other end of ventilation tunnel is equipped with exhaust outlet 6, and the hot wind of air supply line 5 imports ventilation tunnel by each ventilation opening
4, and air quantity is gradually superimposed along wind direction.Each ventilation opening is equipped with volume damper 7.
Several existing temperature monitoring device and humidity detection device, several temperature monitoring dresses are additionally provided in ventilation tunnel 4
It sets, humidity detection device and volume damper are connect with controller.Pass through existing control mode real-time monitoring ventilation tunnel 4
In temperature, humidity, and feed back to controller, then control volume damper 7, intake is adjusted in real time.
The incrementally hot air reverse based on above-mentioned apparatus of the present embodiment drains off drying method, is carried out as follows:
Reconstituted tobacco sheets 2 on conveyer belt 1 enter ventilation tunnel 4, and the existing heater that 1 bottom of conveyer belt increases will uniformly pave
2 temp.-increasing heating of reconstituted tobacco sheets on the conveyor belt evaporates moisture therein.Air supply line 5 provides certain temperature and wet
The hot wind of degree, hot wind enter ventilation tunnel by the first ventilation opening 8, the second ventilation opening 9, third venting mouth 10 and the 4th ventilation opening 11
Road 4,3 wind direction of ventilation tunnel hot wind is with belt direction on the contrary, the hot wind that each ventilation opening enters is sequentially overlapped along wind direction, in office
Formation turbulent flow is mutually collided in portion region, so that hot wind constantly disturbs, and from 1 upstream end of conveyer belt to output end, tunnel of divulging information
Hot blast temperature fluctuation-type in road increases, and moisture fluctuation formula reduces, as shown in Figure 4.Can also be obtained from Fig. 4, from conveyer belt 1 into
Enter end and arrive output end, hot wind wettability power gradually increases, and is finally discharged from exhaust outlet 6.
The working principle of the present embodiment is specific as follows:
It is denoted as Q1, Q2, Q3, Q4 respectively by the air quantity of the first, second, third, fourth ventilation opening, Q1-Q4 intake can pass through
Each volume damper 7 adjusts.Hot wind 3 is formed after entering the hot wind mixing of ventilation tunnel 4 by each air inlet.Ventilation tunnel 4
In hot wind each ladder section upper air volume be variation, turn left from the right side and be denoted as Q1 ', Q2 ', Q3 ', Q4 ', Suo Youjin respectively
The air quantity in air port forms total blast volume Q after summarizing.
Q1 ' is flowed to the left side, is worked as Q1 ' and is flow to Q2 air inlet, converges to form Q2 ' with Q2, i.e. Q2 '=Q1+Q2.Work as Q2 '
It flow to Q3 air inlet, converges to form Q3 ' with Q3, i.e. Q3 '=Q2 '+Q3=Q1+Q2+Q3, and so on, hot wind 3 is in ventilation tunnel
It turns left in flow process in road 4 from the right side, air quantity is incremental.Hot wind 3 in ventilation tunnel 4 is turned left from the right side in flow process, will
Heat transfer cools down to serous coat 2, absorbs 2 serous coat moisture of reconstituted tobacoo and increases humidity.In each air inlet, vertically downward
New hot wind (low temperature and high relative humidity state) the formation cross-mixing for entering hot wind (high temperature low humidified state) and right-to-left flowing of flowing,
Two fluids mutually collides formation turbulent flow in regional area, is uniformly mixed two fluids quickly.Mixed hot blast temperature is high
In the hot blast temperature of right-to-left flowing, while humidity is reduced, to improve the wettability power of mixing hot wind.In ventilation tunnel
Hot blast temperature, humidity and wettability power change curve are shown in Fig. 4.In Fig. 4, A ' indicates that hot blast temperature distribution curve, B ' indicate hot wind
Humidity distribution curve, C ' indicate hot wind wettability power curve.Converge in the regions of turbulent flow to be formed in two fluids, the hot wind of disturbance
3 promote the moisture of 2 serous coat of reconstituted tobacoo to accelerate to spread into hot wind, to improve rate of drying.
As described above, only specific embodiments of the present invention, cannot be limited the scope of the invention with this, i.e., according to it is of the invention specially
Equivalent variations and modification made by benefit application protection scope, should still belong to technology covering scope of the invention.
Claims (8)
1. a kind of incrementally hot wind counter-current drying device, including conveyer belt, conveyer belt top is equipped with ventilation tunnel, ventilation tunnel wind
To opposite with running direction of conveyor belt, it is characterised in that: ventilation tunnel is equipped with several ventilation openings, and each ventilation opening is not same
On one horizontal plane, so that ventilation tunnel sectional area is different or changes along wind direction in certain rule, hot wind is simultaneously from each ventilation opening
Into ventilation tunnel.
2. incrementally hot wind counter-current drying device according to claim 1, it is characterised in that: several logical on ventilation tunnel
Air port is distributed in staged, and ventilation tunnel sectional area is gradually increased along wind direction.
3. incrementally hot wind counter-current drying device according to claim 1, it is characterised in that: ventilation tunnel one end, which is equipped with, to be supplied
Air piping, the other end are equipped with exhaust outlet, and the hot wind of air supply line imports ventilation tunnel by each ventilation opening, passes through each ventilation
The hot wind that mouth imports at a time mixes, and air quantity is gradually superimposed along wind direction.
4. incrementally hot wind counter-current drying device according to claim 1, it is characterised in that: each ventilation opening is equipped with wind
Adjustable valve.
5. incrementally hot wind counter-current drying device according to claim 1, it is characterised in that: from conveyer belt discharging end into
Expect end, air quantity is gradually increased in ventilation tunnel, and heating device is equipped with below conveyer belt.
6. incrementally hot wind counter-current drying device according to claim 4, it is characterised in that: if being additionally provided in ventilation tunnel
Dry temperature monitoring device and humidity detection device, several temperature monitoring device, humidity detection device and volume damper with control
Device connection processed.
The drying method 7. the incrementally hot air reverse of the device based on one of claim 1-6 drains off, it is characterised in that in the following manner
It carries out:
Sheet material on conveyer belt enters ventilation tunnel, and ventilation tunnel wind direction is with belt direction on the contrary, hot wind is simultaneously from each
A ventilation opening enters ventilation tunnel, and the hot wind that each ventilation opening enters is sequentially overlapped along wind direction, mutually collides shape in regional area
At turbulent flow, so that hot wind constantly disturbs, and from conveyer belt upstream end to output end, the hot blast temperature fluctuation in ventilation tunnel
Formula increases, and moisture fluctuation formula reduces.
The drying method 8. incrementally hot air reverse according to claim 7 drains off, it is characterised in that: the sheet material is reconstruction
Tobacco leaf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811376552.7A CN109405506B (en) | 2018-11-19 | 2018-11-19 | Incremental hot air countercurrent drying device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811376552.7A CN109405506B (en) | 2018-11-19 | 2018-11-19 | Incremental hot air countercurrent drying device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109405506A true CN109405506A (en) | 2019-03-01 |
| CN109405506B CN109405506B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811376552.7A Active CN109405506B (en) | 2018-11-19 | 2018-11-19 | Incremental hot air countercurrent drying device and method |
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| Country | Link |
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| CN (1) | CN109405506B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110679981A (en) * | 2019-11-11 | 2020-01-14 | 云南中烟工业有限责任公司 | Device for preparing reconstituted tobacco by multi-point air inlet type thick pulp method and operation method thereof |
| CN110693068A (en) * | 2019-11-11 | 2020-01-17 | 云南中烟工业有限责任公司 | Device and method for preparing reconstituted tobacco through multipoint air inlet and outlet type thick slurry method |
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|---|---|---|---|---|
| CN110679981A (en) * | 2019-11-11 | 2020-01-14 | 云南中烟工业有限责任公司 | Device for preparing reconstituted tobacco by multi-point air inlet type thick pulp method and operation method thereof |
| CN110693068A (en) * | 2019-11-11 | 2020-01-17 | 云南中烟工业有限责任公司 | Device and method for preparing reconstituted tobacco through multipoint air inlet and outlet type thick slurry method |
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| Publication number | Publication date |
|---|---|
| CN109405506B (en) | 2024-03-26 |
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