CN103082390A - Control method of rotary drum type cut-tobacco drier three-level regulation - Google Patents
Control method of rotary drum type cut-tobacco drier three-level regulation Download PDFInfo
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Abstract
Disclosed is a control method of rotary drum type cut-tobacco drier three-level regulation. The method can be adopted to maintain invariability of parameters of rotation speed of a rotary drum, temperature of a drum wall, hot wind quantity and the like, and an electric balance flow in a rotary drum inlet is set according to a preset value. When deviation exists between an estimated value of the cut-tobacco moisture content of a rotary drum outlet and a set value of the cut-tobacco moisture content of the rotary drum outlet, the hot wind quantity is preferentially adjusted; when the hot wind quantity reaches an adjusting limit value within a required range of the needed hot wind quantity, and when the deviation still exists between the estimated value of the cut-tobacco moisture content of the rotary drum outlet and the set value of the cut-tobacco moisture content of the rotary drum outlet still, the temperature of the drum wall is readjusted; when the hot wind quantity and the temperature of the drum wall are both in the adjusting limit value which is within the required range, and when the deviation still exists between the estimated value of the cut-tobacco moisture content of the rotary drum outlet and the set value of the cut-tobacco moisture content of the rotary drum outlet, finally flow quantity of the electric weight flow of the rotary drum inlet is adjusted. By the adoption of the three-level regulation, namely the hot wind quantity, the temperature of the drum wall, and the electric balance flow, and therefore the requirement that the estimated value of the cut-tobacco moisture content of the rotary drum outlet reaches the set value is satisfied, and stability of product quality is raised.
Description
Technical field
The present invention relates to present technique and relate to cigarette primary processing production and processing and association area thereof, refer in particular to the adjustment control method of drum-type cut-tobacco drier barrel temperature.
Background technology
The cut tobacco drying process is the critical process of throwing processing, its major function is pipe tobacco to be dried to outlet from higher entrance moisture content meet the moisture content that cigarette process requires, and its treatment effect has significant impact to physical quality, aesthetic quality, the chemical composition of product.Drum-type (also claiming thin board type) cut-tobacco drier is a kind of drying equipment that the cut tobacco drying process is generally used, possess the target call that the multiple regulating measures such as hot blast air quantity in cylinder barrel temperature, cylinder, the interior hot blast temperature of cylinder, entrance electric weigher flow satisfy baking silk outlet moisture content of cut tobaccos, can be combined into as required a multiple drum-type baking control model.What the tobacco processing industry generally adopted at present is other parameter values of resting barrel cut-tobacco drier, satisfies the control model of baking silk outlet moisture content of cut tobaccos by the adjustment barrel wall temperature.
Various cigarette product style and features and cut-tobacco drier control model have comparatively close relationship, along with deepening continuously of cigarette product research, find that cylinder barrel temperature has larger impact to the product sensory quality, the fluctuation of barrel temperature exceeds certain scope and can cause the product sensory quality to fluctuate.At present, the control model of baking silk outlet moisture content of cut tobaccos is satisfied in employing by the adjustment barrel wall temperature, when cylinder cut tobacco dryer entrance moisture content fluctuation was larger, can there be larger fluctuation in cut-tobacco drier barrel temperature, and the stability of product sensory quality is affected greatly.
Summary of the invention
Purpose of the present invention is exactly by setting up the control method of three grades of adjustings of a kind of drum-type cut-tobacco drier, the barrel temperature being in scope of design in process of production all the time, to improve the stability of cigarette product quality.
For achieving the above object, technical solution of the present invention is:
The control method of three grades of adjustings of a kind of drum-type cut-tobacco drier, concrete control method is as follows:
(1) determine that the kinds of cigarettes product is for the required barrel temperature requirement scope of drum-type cut-tobacco drier;
(2) determine that the kinds of cigarettes product is for the required hot blast air quantity claimed range of drum-type cut-tobacco drier;
(3) according to the roller drying characteristic, determine dehydrating amount corresponding at the concrete barrel temperature of drum-type cut-tobacco drier;
(4) dry by the fire silk when material is produced at cylinder, default cylinder entrance electric weigher flow value, this cylinder entrance electric weigher flow value obtains by the following method:
1. need satisfy the requirements: the cylinder entrance moisture content of cut tobaccos data (dehydrating amount (being designated as X) that be designated as a), the drum outlet moisture content of cut tobaccos sets value correspondence at (being designated as b), concrete barrel temperature;
2. obtain cylinder entrance electric weigher flow preset value (being designated as Y), formula is:
Y=X*(100-b）/（a-b）
(5) dry by the fire silk when material is produced at cylinder, cylinder entrance electric weigher flow value arranges by preset value, keeps the parameter constants such as rotating speed, barrel temperature and hot blast air quantity of drum-type cut-tobacco drier in production process; When drum outlet moisture content of cut tobaccos detected value and drum outlet moisture content of cut tobaccos setting value generation skew, preferentially regulate the hot blast air quantity; Be in the accommodation limit value of required hot blast air quantity claimed range when the hot blast air quantity, and drum outlet moisture content of cut tobaccos detected value and drum outlet moisture content of cut tobaccos setting value exist still when being offset, then the adjustment barrel wall temperature; All be in the accommodation limit value of necessary requirement scope when hot blast air quantity and barrel temperature, and drum outlet moisture content of cut tobaccos detected value is regulated cylinder entrance electric weigher flow when still having skew with setting value at last.
Further, when drum outlet moisture content of cut tobaccos detected value sets value lower than the drum outlet moisture content of cut tobaccos, reduce the hot blast air quantity; When drum outlet moisture content of cut tobaccos detected value sets value higher than the drum outlet moisture content of cut tobaccos, increase the hot blast air quantity.
Further, lower than drum outlet moisture content of cut tobaccos setting value, and the hot blast air quantity reduces the barrel temperature when being in the lower limit of required hot blast air quantity claimed range limiting value when drum outlet moisture content of cut tobaccos detected value; Higher than drum outlet moisture content of cut tobaccos setting value, and the hot blast air quantity increases the barrel temperature when being in the higher limit of required hot blast air quantity claimed range limiting value when drum outlet moisture content of cut tobaccos detected value.
Further, when drum outlet moisture content of cut tobaccos detected value sets value lower than the drum outlet moisture content of cut tobaccos, and the hot blast air quantity is in the lower limit of required hot blast air quantity claimed range limiting value, and when the barrel temperature is in the limiting value lower limit of required barrel temperature requirement scope, increase cylinder entrance electric weigher flow; When drum outlet moisture content of cut tobaccos detected value sets value higher than the drum outlet moisture content of cut tobaccos, and the hot blast air quantity is in the higher limit of required hot blast air quantity claimed range limiting value, and when the barrel temperature is in the limiting value higher limit of required barrel temperature requirement scope, reduce cylinder entrance electric weigher flow.
Further, the drum-type cut-tobacco drier keeps the parameters value constant within a period of time after changing running status over to by standby, this section period is the time that drum-type cut-tobacco drier material passes through, this section period be the drum outlet moisture content of cut tobaccos be in uphill process the startup stage, the startup stage finish after, just carry out drum outlet moisture content of cut tobaccos detected value and cylinder baking silk and export the contrast that moisture content sets value.
The present invention reaches the requirement of setting value by three grades of regulation and control of hot blast air quantity, barrel temperature, entrance electric weigher flow to satisfy outlet moisture content of cut tobacco detected value.Realization, is processed in barrel temperature design scope when fluctuation occurs the supplied materials moisture content with the trade mark, avoids having improved constant product quality because the fluctuation of supplied materials moisture content causes the larger phenomenon of barrel temperature fluctuation.
Description of drawings
Fig. 1 is three grades of adjustment control method schematic flow sheets of the present invention.
The specific embodiment
Now in conjunction with Fig. 1 and embodiment, the present invention is described.
The flow of tobacco of certain drum-type cut-tobacco drier design is 2000kg/h, and the drum-type cut-tobacco drier barrel temperature range of work of certain trade mark cigarette shreds is that 116 ℃ to 120 ℃, the zone of reasonableness of hot blast air quantity are 500 ㎡/h to 2000 ㎡/h.According to the roller drying characteristic, after setting up regression equation by the historical data of cylinder cut tobacco dryer, can obtain dehydrating amount dependency relation corresponding to the concrete barrel temperature of cylinder is following formula: Y=1.9* X-86.2 (X is the barrel temperature, and Y is dehydrating amount).In above-mentioned formula Y=1.9* X-86.2 1.9 and 86.2 is to set up by the historical data of this cylinder cut tobacco dryer the result that regression equation draws.
Default barrel temperature value is that 118 ℃, hot blast air quantity are 1200 ㎡/h, cylinder entrance moisture content of cut tobaccos is 19.0%, outlet moisture content of cut tobaccos setting value is 13.0%, the dehydrating amount dependency relation formula that barrel temperature concrete according to above-mentioned cylinder is corresponding can be calculated the dehydrating amount at 118 ℃ of barrel temperature: Y=1.9*118-86.2=138
Dry by the fire silk when material is produced at cylinder, default cylinder entrance electric weigher flow value, this cylinder entrance electric weigher flow value obtains by the following method: ⑴ need satisfy the requirements: corresponding dehydrating amount (being 138) at cylinder entrance moisture content of cut tobaccos data (being 19.0%), drum outlet moisture content of cut tobaccos setting value (being 13.0%), concrete barrel temperature;
⑵ obtain cylinder entrance electric weigher flow preset value (being designated as Y), and formula is:
Y=X*(100-b）/（a-b）
According to formula, can calculate in advance cylinder entrance pipe tobacco electric weigher flow and be:
Y=?X*(100-b）/（a-b）=?138*(100-13）/（19-13）=2001?kg/h。
Above-mentioned cylinder entrance electric weigher flow preset value formula is tried to achieve according to the principle of mass conservation:
If Y is entrance weight, Z is outlet weight, cylinder entrance moisture content of cut tobaccos data (be designated as a), drum outlet moisture content of cut tobaccos setting value (being designated as b), X is dehydrating amount
Application of principle one: entrance absolute weight=outlet absolute weight
That is: entrance weight of material and outlet material weight all being converted is the weight of 0 moisture content, and the absolute weight of entrance material and outlet material is consistent so,
Can draw: Y* (100-b)=Z* (100-b)
And then can draw Z=Y* (100-b)/(100-a)
Application of principle two: entrance weight=outlet weight+dehydrated weight
Can draw: Y=Z+X
And then can draw X=Y-Z
And then can draw X=Y-Y* (100-b)/(100-a)
And then can draw Y=X* (100-b)/(a-b)
The 3rd step: weight/hour=flow
Transfer flow formula with above-mentioned to from the weight formula, can obtain cylinder entrance electric weigher flow preset value formula.
The drum-type cut-tobacco drier keeps the parameters value constant within a period of time after changing running status over to by standby, this section period is the time that drum-type cut-tobacco drier material passes through, this section period be the drum outlet moisture content of cut tobaccos be in uphill process the startup stage, the startup stage finish after, just carry out drum outlet moisture content of cut tobaccos detected value and cylinder baking silk and export the contrast that moisture content sets value.
The drum-type cut-tobacco drier startup stage finishing after, regulate to control for three grades and formally enable.
When material was produced, cylinder entrance electric weigher flow arranged by preset value (2001 kg/h), keeps the parameter constants such as rotating speed, barrel temperature and hot blast air quantity of drum-type cut-tobacco drier in production process at cylinder baking silk; If in production process, cylinder entrance moisture content of cut tobaccos becomes 19.5%, and that outlet moisture content of cut tobaccos setting value is kept is 13.0% constant, means that dehydrating amount can increase.After outlet moisture content of cut tobaccos value being detected and exceeding 13.0%, open hot blast air quantity PID regulatory function, namely increase the hot blast air quantity.After if the hot blast air quantity arrives higher limit 2000 ㎡/h, outlet moisture content of cut tobaccos value still exceeds 13.0%, transfer to and start barrel temperature PID regulatory function, namely increase the barrel temperature, after if the barrel temperature reaches 120 ℃ of higher limits, outlet moisture content of cut tobaccos value still exceeds 13.0%, transfers to starting cylinder entrance electric weigher flow PID regulatory function, namely increases cylinder entrance electric weigher flow.
If in production process, cylinder entrance moisture content of cut tobaccos becomes 18.5%, and that outlet moisture content of cut tobaccos setting value is kept is 13.0% constant, means that dehydrating amount can reduce.When detect outlet moisture content of cut tobaccos value lower than 13.0% after, open hot blast air quantity PID regulatory function, namely reduce the hot blast air quantity.After if the hot blast air quantity arrives lower limit 500 ㎡/h, outlet moisture content of cut tobaccos value is still lower than 13.0%, transfer to and start barrel temperature PID regulatory function, namely reduce the barrel temperature, after if the barrel temperature reaches 116 ℃ of lower limits, outlet moisture content of cut tobaccos value transfers startup cylinder entrance electric weigher flow PID regulatory function to still lower than 13.0%, namely reduces cylinder entrance electric weigher flow.
Above-mentioned is only the specific embodiment of the present invention, but design concept of the present invention is not limited to this, allly utilizes this design to carry out the change of unsubstantiality to the present invention, all should belong to the behavior of invading protection domain of the present invention.
Claims (5)
1. the control method of three grades of adjustings of a drum-type cut-tobacco drier is characterized in that: concrete control method is as follows:
(1) determine that the kinds of cigarettes product is for the required barrel temperature requirement scope of drum-type cut-tobacco drier;
(2) determine that the kinds of cigarettes product is for the required hot blast air quantity claimed range of drum-type cut-tobacco drier;
(3) according to the roller drying characteristic, determine dehydrating amount corresponding at the concrete barrel temperature of drum-type cut-tobacco drier;
(4) dry by the fire silk when material is produced at cylinder, default cylinder entrance electric weigher flow value, this cylinder entrance electric weigher flow value obtains by the following method:
1. need satisfy the requirements: the cylinder entrance moisture content of cut tobaccos data (dehydrating amount (being designated as X) that be designated as a), the drum outlet moisture content of cut tobaccos sets value correspondence at (being designated as b), concrete barrel temperature;
2. obtain cylinder entrance electric weigher flow preset value (being designated as Y), formula is:
Y=X*(100-b）/（a-b）
(5) dry by the fire silk when material is produced at cylinder, cylinder entrance electric weigher flow value arranges by preset value, keeps the parameter constants such as rotating speed, barrel temperature and hot blast air quantity of drum-type cut-tobacco drier in production process; When drum outlet moisture content of cut tobaccos detected value and drum outlet moisture content of cut tobaccos setting value generation skew, preferentially regulate the hot blast air quantity; Be in the accommodation limit value of required hot blast air quantity claimed range when the hot blast air quantity, and drum outlet moisture content of cut tobaccos detected value and drum outlet moisture content of cut tobaccos setting value exist still when being offset, then the adjustment barrel wall temperature; All be in the accommodation limit value of necessary requirement scope when hot blast air quantity and barrel temperature, and drum outlet moisture content of cut tobaccos detected value is regulated cylinder entrance electric weigher flow when still having skew with setting value at last.
2. the control method of three grades of adjustings of a kind of drum-type cut-tobacco drier as claimed in claim 1, is characterized in that: when drum outlet moisture content of cut tobaccos detected value sets value lower than the drum outlet moisture content of cut tobaccos, reduce the hot blast air quantity; When drum outlet moisture content of cut tobaccos detected value sets value higher than the drum outlet moisture content of cut tobaccos, increase the hot blast air quantity.
3. the control method of three grades of adjustings of a kind of drum-type cut-tobacco drier as claimed in claim 2, it is characterized in that: when drum outlet moisture content of cut tobaccos detected value sets value lower than the drum outlet moisture content of cut tobaccos, and the hot blast air quantity reduces the barrel temperature when being in the lower limit of required hot blast air quantity claimed range limiting value; Higher than drum outlet moisture content of cut tobaccos setting value, and the hot blast air quantity increases the barrel temperature when being in the higher limit of required hot blast air quantity claimed range limiting value when drum outlet moisture content of cut tobaccos detected value.
4. the control method of three grades of adjustings of a kind of drum-type cut-tobacco drier as claimed in claim 3, it is characterized in that: when drum outlet moisture content of cut tobaccos detected value sets value lower than the drum outlet moisture content of cut tobaccos, and the hot blast air quantity is in the lower limit of required hot blast air quantity claimed range limiting value, and when the barrel temperature is in the limiting value lower limit of required barrel temperature requirement scope, increase cylinder entrance electric weigher flow; When drum outlet moisture content of cut tobaccos detected value sets value higher than the drum outlet moisture content of cut tobaccos, and the hot blast air quantity is in the higher limit of required hot blast air quantity claimed range limiting value, and when the barrel temperature is in the limiting value higher limit of required barrel temperature requirement scope, reduce cylinder entrance electric weigher flow.
5. the control method of three grades of adjustings of a kind of drum-type cut-tobacco drier as described in any one in claim 11, it is characterized in that: the drum-type cut-tobacco drier keeps the parameters value constant within a period of time after changing running status over to by standby, this section period is the time that drum-type cut-tobacco drier material passes through, this section period be the drum outlet moisture content of cut tobaccos be in uphill process the startup stage, the startup stage finish after, just carry out drum outlet moisture content of cut tobaccos detected value and cylinder baking silk and export the contrast that moisture content sets value.
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| CN103598668A (en) * | 2013-12-05 | 2014-02-26 | 福建中烟工业有限责任公司 | Tobacco leaf shredding processing method for controlling water ratio of material |
| CN104305515A (en) * | 2014-08-13 | 2015-01-28 | 上海烟草集团有限责任公司 | System and method for diagnosing cut tobacco moisture content stability in cut tobacco drying working procedure |
| CN104432453A (en) * | 2014-11-13 | 2015-03-25 | 山东中烟工业有限责任公司 | Method for controlling roller hot air temperature |
| CN106343601A (en) * | 2016-09-09 | 2017-01-25 | 福建中烟工业有限责任公司 | Method and device for controlling expanded tobacco drying outlet water content |
| CN106805282A (en) * | 2017-02-16 | 2017-06-09 | 红塔烟草(集团)有限责任公司 | A kind of method for controlling water content of chimneying formula dried material |
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| CN110839933A (en) * | 2019-12-06 | 2020-02-28 | 龙岩烟草工业有限责任公司 | Cut tobacco dryer and hot air temperature control method thereof |
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| CN111620132A (en) * | 2020-04-29 | 2020-09-04 | 河南中烟工业有限责任公司 | Method and system for regulating and controlling tobacco shred feeding of cigarette making line |
| CN111620132B (en) * | 2020-04-29 | 2021-09-17 | 河南中烟工业有限责任公司 | Method and system for regulating and controlling tobacco shred feeding of cigarette making line |
| CN113349409A (en) * | 2021-06-18 | 2021-09-07 | 福建中烟工业有限责任公司 | Tobacco leaf temperature and humidity control device and method |
| CN113349399A (en) * | 2021-06-18 | 2021-09-07 | 福建中烟工业有限责任公司 | Method and system for controlling airflow drying equipment to dry tobacco shreds |
| CN114642267A (en) * | 2022-04-01 | 2022-06-21 | 湖北中烟工业有限责任公司 | Method and device for regulating and controlling hot processing strength of cut tobacco drying process and electronic equipment |
| CN114642267B (en) * | 2022-04-01 | 2023-03-14 | 湖北中烟工业有限责任公司 | Method and device for regulating hot processing strength of cut tobacco drying process and electronic equipment |
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