CN111728253A - Control method and system for tobacco airflow drying strength - Google Patents
Control method and system for tobacco airflow drying strength Download PDFInfo
- Publication number
- CN111728253A CN111728253A CN202010643097.3A CN202010643097A CN111728253A CN 111728253 A CN111728253 A CN 111728253A CN 202010643097 A CN202010643097 A CN 202010643097A CN 111728253 A CN111728253 A CN 111728253A
- Authority
- CN
- China
- Prior art keywords
- drying
- hot air
- water content
- air flow
- tobacco
- 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.)
- Granted
Links
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
- A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B9/00—Control of the moisture content of tobacco products, e.g. cigars, cigarettes, pipe tobacco
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P.I., P.I.D.
Abstract
The invention provides a method and a system for controlling the drying intensity of tobacco airflow, wherein the method comprises the following steps: the expected processing strength of the tobacco pneumatic drying production line is set. And acquiring the outlet temperature, the inlet temperature, the hot air speed and the air flow drying section length of the tobacco material air flow drying. According to the formula Q ═ T-T0) Calculating actual processing strength (ln L-lnS), wherein Q represents the processing strength of the pneumatic dryer; t represents the mean value of the outlet temperature of the air flow dryer, T0The average value of the inlet temperature of the air flow dryer is shown, L represents the length of the air flow drying section, and S represents the wind speed of hot wind. And judging whether the difference value between the actual processing intensity and the expected processing intensity is smaller than a set threshold value, if not, adjusting the outlet temperature or the hot air speed to enable the difference value to be smaller than the set threshold value. Hair brushObviously, the consistency of the tobacco shred making quality can be improved, and the consistency level of cigarette processing is improved.
Description
Technical Field
The invention relates to the technical field of cigarette production assistance, in particular to a method and a system for controlling the airflow drying strength of tobacco.
Background
The pneumatic drying of tobacco is a key thermal processing procedure in the tobacco shred manufacturing process. A large number of researches show that airflow drying in the tobacco shred making process flow is a very key processing link influencing the physical, chemical and sensory quality of tobacco products, and the change degree of the quality characteristics of the tobacco products is closely related to the processing strength of the process. With the rapid growth of cigarette brand size, there are increasingly situations in cigarette production where multiple different production lines produce the same brand of cigarette product. At present, airflow drying equipment used at different processing points has great differences in the aspects of production capacity, equipment structure, control mode and the like, and how to accurately represent the processing strength of a tobacco airflow dryer and how to ensure the homogenization processing of the procedure becomes a problem to be solved urgently. On the other hand, even if the same or similar airflow drying equipment is used, the quality of the cut tobacco dried by different-line processing can be different due to the difference of environmental climate conditions, steam medium conditions and the like of different-place production. Therefore, the accurate representation of the processing strength of the tobacco pneumatic drying and the realization of the homogenization processing of the tobacco pneumatic drying process become the key of the homogenization production in the tobacco shred manufacturing process.
Disclosure of Invention
The invention provides a method and a system for controlling the drying strength of tobacco airflow, which solve the problems that the quality difference of cut tobacco is large after drying at different processing points and homogenization processing cannot be realized during the existing tobacco airflow drying, and can improve the consistency of the cut tobacco processing quality and the quality of the cut tobacco.
In order to achieve the above purpose, the invention provides the following technical scheme:
a method for controlling the drying intensity of a tobacco stream, comprising:
setting the expected processing strength of the tobacco pneumatic drying production line;
acquiring the outlet temperature, the inlet temperature, the hot air speed and the air flow drying section length of the tobacco material air flow drying;
according to the formula Q ═ T-T0) + (lnL-lnS) calculating actual processing intensity, wherein Q represents the processing intensity of the pneumatic dryer; t represents the mean value of the outlet temperature of the air flow dryer, T0The average value of the inlet temperature of the airflow dryer is shown, L represents the length of an airflow drying section, and S represents the wind speed of hot wind;
and judging whether the difference value between the actual processing intensity and the expected processing intensity is smaller than a set threshold value, if not, adjusting the outlet temperature or the hot air speed to enable the difference value to be smaller than the set threshold value.
Preferably, the method further comprises the following steps:
the hot air temperature of air flow drying is controlled by adjusting the water content of the inlet material of the air flow dryer, and the hot air temperature is adjusted by increasing or reducing the water content of the inlet material, so that the discharging temperature is adjusted, and the processing strength of the material is adjusted.
Preferably, the adjusting the outlet temperature or the hot wind speed to make the difference smaller than the set threshold includes:
if the actual processing intensity is smaller than the expected processing intensity, the water content of the material at the airflow drying inlet is increased, the temperature of the hot air is increased, or the air speed of the hot air is reduced;
if the actual processing intensity is greater than the expected processing intensity, the temperature of the hot air is reduced or the air speed of the hot air is increased by reducing the water content of the inlet material.
Preferably, the method further comprises the following steps:
and setting a target value of the water content of the outlet material, and establishing a PID control model of the hot air speed and the water content of the outlet material of the air flow dryer so as to adjust the hot air speed along with the target value of the water content of the outlet material and further control the processing strength of the air flow dryer.
Preferably, the adjusting the wind speed of the hot wind along with the target value of the water content of the outlet material includes:
acquiring a measured value of the water content of the outlet material of the air flow dryer, and acquiring a target deviation value of the water content of the outlet material according to the target value and the measured value;
and the PID control model controls the hot air speed according to the target deviation value, so that the water content of the outlet material is adjusted according to the target value.
Preferably, the adjusting the hot wind speed along with the target value of the water content of the outlet material further comprises:
acquiring the water content of the outlet material and the hot air speed within a set time in real time, and fitting according to a time relation to obtain a fitting curve of the water content of the outlet material and the hot air speed;
and controlling the air speed of the hot air for air flow drying according to the fitting curve, so that the processing intensity of the air flow drying is controlled in a consistent manner.
The invention also provides a control system for the drying intensity of tobacco airflow, which comprises:
the first setting unit is used for setting the expected processing strength of the tobacco pneumatic drying production line;
the first acquisition unit is used for acquiring the outlet temperature, the inlet temperature, the hot air speed and the air flow drying section length of the tobacco material air flow drying;
a calculation unit for (T-T) according to the formula Q0) + (lnL-lnS) calculating actual processing intensity, wherein Q represents the processing intensity of the pneumatic dryer; t represents the mean value of the outlet temperature of the air flow dryer, T0The average value of the inlet temperature of the airflow dryer is shown, L represents the length of an airflow drying section, and S represents the wind speed of hot wind;
and the first control unit is used for judging whether the difference value between the actual processing intensity and the expected processing intensity is smaller than a set threshold value, and if not, adjusting the outlet temperature or the hot air speed to enable the difference value to be smaller than the set threshold value.
Preferably, the method further comprises the following steps:
and the second control unit is used for controlling the hot air temperature of air flow drying by adjusting the water content of the inlet material of the air flow dryer, and adjusting the hot air temperature by increasing or reducing the water content of the inlet material, so that the discharging temperature is adjusted, and the processing strength of the material is adjusted.
Preferably, the method further comprises the following steps:
and the PID control unit is used for setting a target value of the water content of the outlet material and establishing a PID control model of the hot air speed and the water content of the outlet material of the air flow dryer so as to adjust the hot air speed along with the target value of the water content of the outlet material and further control the processing strength of the air flow dryer.
Preferably, the PID control unit includes:
the deviation value adjusting unit is used for obtaining a measured value of the water content of the outlet material of the air flow dryer and obtaining a target deviation value of the water content of the outlet material according to the target value and the measured value; the PID control model controls the hot air speed according to the target deviation value, so that the water content of the outlet material is adjusted according to the target value;
the fitting curve adjusting unit is used for acquiring the water content of the outlet material and the hot air speed within a set time in real time and fitting according to a time relation to obtain a fitting curve of the water content of the outlet material and the hot air speed;
and the fitting curve adjusting unit also controls the hot air speed of the air flow drying according to the fitting curve, so that the processing intensity of the air flow drying is controlled in a consistent manner.
The invention provides a method and a system for controlling the pneumatic drying strength of tobacco, which are characterized in that the expected processing strength of an expected pneumatic drying production line of the tobacco is set, the temperatures of materials at an inlet and an outlet of a pneumatic drying material of the tobacco are collected, the average value is calculated, the length of the pneumatic drying section and the air speed of hot air are measured and recorded, the actual processing strength of pneumatic drying is calculated on the basis of the data, and then the drying strength is controlled according to the difference value between the actual processing strength and the expected processing strength. The method solves the problems that the quality difference of the cut tobacco is large after drying at different processing points and homogenization processing cannot be realized during the existing tobacco pneumatic drying, and can improve the consistency of the cut tobacco processing quality and the consistency level of cigarette processing.
Drawings
In order to more clearly describe the specific embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below.
FIG. 1 is a schematic view of a method for controlling the drying intensity of a tobacco stream according to the present invention;
FIG. 2 is a flow chart of the control of the drying intensity of a tobacco stream according to the present invention.
Detailed Description
In order to make the technical field of the invention better understand the scheme of the embodiment of the invention, the embodiment of the invention is further described in detail with reference to the drawings and the implementation mode.
The method aims at the problems that the quality difference of cut tobaccos produced at different processing points is large and homogenization cannot be realized when the current tobacco airflow is dried. The invention provides a method and a system for controlling the pneumatic drying strength of tobacco, which are characterized in that the expected processing strength of an expected pneumatic drying production line of the tobacco is set, the temperatures of materials at an inlet and an outlet of a pneumatic drying material of the tobacco are collected, the average value is calculated, the length of the pneumatic drying section and the air speed of hot air are measured and recorded, the actual processing strength of pneumatic drying is calculated on the basis of the data, and then the drying strength is controlled according to the difference value between the actual processing strength and the expected processing strength. The method solves the problems that the quality difference of the cut tobacco is large after drying at different processing points and homogenization processing cannot be realized during the existing tobacco pneumatic drying, and can improve the consistency of the cut tobacco processing quality and the consistency level of cigarette processing.
As shown in fig. 1, a method for controlling the drying intensity of tobacco airflow is characterized by comprising the following steps:
s1: the expected processing strength of the tobacco pneumatic drying production line is set.
S2: and acquiring the outlet temperature, the inlet temperature, the hot air speed and the air flow drying section length of the tobacco material air flow drying.
S3: according to the formula Q ═ T-T0) + (lnL-lnS) calculating actual processing intensity, wherein Q represents the processing intensity of the pneumatic dryer; t represents the mean value of the outlet temperature of the air flow dryer, T0The average value of the inlet temperature of the air flow dryer is shown, L represents the length of the air flow drying section, and S represents the wind speed of hot wind.
S4: and judging whether the difference value between the actual processing intensity and the expected processing intensity is smaller than a set threshold value, if not, adjusting the outlet temperature or the hot air speed to enable the difference value to be smaller than the set threshold value.
Specifically, the temperature of the tobacco airflow drying material at the inlet and the outlet is collected, the average value is calculated, the length of the airflow drying section and the air speed of hot air are measured and recorded, and the processing strength of the airflow drying product at the original processing point is calculated and determined on the basis of the data. And detecting and calculating the processing strength of the products in the airflow drying equipment of the other production line by taking the consistency control of the processing strength index of the products in the process as a criterion, changing the temperature of the different-line airflow drying hot air, and adjusting the processing strength index of the different-line airflow drying hot air to have no obvious difference with the original processing point, thereby obtaining the consistent processing condition. The processing strength expression is as follows: q ═ T (T-T)0) + (lnL-lnS). Wherein Q represents the dry strength; t represents the average value of the tobacco shred temperature at the air flow drying outlet in unit; t0 represents the average air-dried inlet tobacco shred temperaturePositioning; l represents the length of the airflow drying section in mm; s represents the hot air speed in m/min. The method comprehensively considers two factors of temperature and time which influence the processing strength: the heated temperature of the tobacco leaves is represented by the outlet temperature and the inlet temperature of the cut tobacco dryer, so that the problem that the complicated cut tobacco heated test program is difficult to accurately quantify is solved; the length of the dry section and the wind speed of hot wind are used for comprehensively representing the retention time of the material, so that the error generated in the test process is avoided, and meanwhile, the natural logarithm is taken for the time, so that the influence of the processing time on the processing strength is weakened, and the actual influence degree is closer to the actual influence degree.
In one embodiment, as shown in fig. 2, the specific steps for controlling the consistency of the pneumatic drying off-line processing strength of the tobacco are as follows:
1. the method comprises the steps of normally producing in an original production line according to set airflow drying processing parameters, collecting the temperatures of an outlet and an inlet of airflow drying of tobacco materials, the temperature of hot air and the speed of the hot air, and measuring the length of an airflow drying section.
2. Calculating and obtaining the actual processing strength Q of the tobacco material through the processing strength expression0。
3. Directly transplanting the processing parameters of the original production line to another production line except the material flow. The same detection method is adopted to detect the processing strength Q1 of the airflow drying equipment of another production line to the products.
4. Compare | Q1-Q0The | is less than or equal to 0.5. The processing strength of the other production line is similar to that of the original production line, and normal production can be carried out. If Q1-Q0If the water content is more than 0.5, the processing strength of the material needs to be regulated and controlled in time by adjusting the processing parameters such as the water content of the material at the inlet of the leaf-silk airflow dryer of the other production line.
5. When another production line processing parameter needs to be adjusted, the moisture content of the inlet material of the airflow dryer is preferentially considered to be adjusted to adjust the temperature of the airflow drying hot air, and the processing strength Q of the material is adjusted to a certain extent1。
6. Through the adjusting method, the processing parameters adjusted by the other production line are used as the conditions for the quality consistency processing of the airflow drying equipment of the production line.
As shown in fig. 1, the method further comprises:
s5: the hot air temperature of air flow drying is controlled by adjusting the water content of the inlet material of the air flow dryer, and the hot air temperature is adjusted by increasing or reducing the water content of the inlet material, so that the discharging temperature is adjusted, and the processing strength of the material is adjusted.
Further, the adjusting the outlet temperature or the hot wind speed to make the difference smaller than the set threshold value includes: if the actual processing intensity is smaller than the expected processing intensity, the water content of the material at the airflow drying inlet is increased, the temperature of the hot air is increased, or the air speed of the hot air is reduced; if the actual processing intensity is greater than the expected processing intensity, the temperature of the hot air is reduced or the air speed of the hot air is increased by reducing the water content of the inlet material.
In practical application, when the processing strength of another production line is lower than that of the original production line, the hot air temperature is increased by increasing the water content of the inlet material of the air flow dryer within the range of ensuring normal and stable work of the equipment. When another production line processing strength is higher than former production line, the hot-blast temperature is reduced through the entry material moisture content that reduces the air flow dryer in the scope of guaranteeing the normal steady operation of equipment.
As shown in fig. 1, the method further comprises:
s6: and setting a target value of the water content of the outlet material, and establishing a PID control model of the hot air speed and the water content of the outlet material of the air flow dryer so as to adjust the hot air speed along with the target value of the water content of the outlet material and further control the processing strength of the air flow dryer.
Further, the making the hot wind speed follow the target value of the water content of the outlet material is adjusted, including:
s61: and acquiring an actual measurement value of the water content of the outlet material of the air flow dryer, and acquiring a target deviation value of the water content of the outlet material according to the target value and the actual measurement value.
S62: and the PID control model controls the hot air speed according to the target deviation value, so that the water content of the outlet material is adjusted according to the target value.
Furthermore, the adjusting the hot air speed along with the target value of the water content of the outlet material further comprises:
s63: acquiring the water content of the outlet material and the hot air speed within a set time in real time, and fitting according to a time relation to obtain a fitting curve of the water content of the outlet material and the hot air speed;
s64: and controlling the air speed of the hot air for air flow drying according to the fitting curve, so that the processing intensity of the air flow drying is controlled in a consistent manner.
The method comprises the steps of setting the expected processing strength of an expected tobacco airflow drying production line, collecting the temperatures of materials at an inlet and an outlet of a tobacco airflow drying material, calculating an average value, measuring and recording the length of the airflow drying section and the air speed of hot air, calculating the actual processing strength of the airflow drying on the basis of the average value, and further controlling the drying strength according to the difference value between the actual processing strength and the expected processing strength. The problem that the quality difference of the cut tobacco is large after drying at different processing points and homogenization processing cannot be realized in the existing tobacco pneumatic drying process is solved, the quality consistency of tobacco shred preparation can be improved, and the quality level of the cut tobacco is improved.
Correspondingly, the invention also provides a control system for the drying intensity of the tobacco airflow, which comprises: the first setting unit is used for setting the expected processing strength of the tobacco pneumatic drying production line. The first acquisition unit is used for acquiring the outlet temperature, the inlet temperature, the hot air speed and the air flow drying section length of the tobacco material air flow drying. A calculation unit for (T-T) according to the formula Q0) + (lnL-lnS) calculating actual processing intensity, wherein Q represents the processing intensity of the pneumatic dryer; t represents the mean value of the outlet temperature of the air flow dryer, T0The average value of the inlet temperature of the air flow dryer is shown, L represents the length of the air flow drying section, and S represents the wind speed of hot wind. A first control unit for judging whether the difference between the actual machining strength and the expected machining strength is less than a set threshold value, and if not, judging whether the difference is less than the set threshold valueAnd adjusting the outlet temperature or the hot air speed to enable the difference value to be smaller than the set threshold value.
The system further comprises: and the second control unit is used for controlling the hot air temperature of air flow drying by adjusting the water content of the inlet material of the air flow dryer, and adjusting the hot air temperature by increasing or reducing the water content of the inlet material, so that the discharging temperature is adjusted, and the processing strength of the material is adjusted.
The system further comprises: and the PID control unit is used for setting a target value of the water content of the outlet material and establishing a PID control model of the hot air speed and the water content of the outlet material of the air flow dryer so as to adjust the hot air speed along with the target value of the water content of the outlet material and further control the processing strength of the air flow dryer.
Further, the PID control unit includes: the deviation value adjusting unit is used for obtaining a measured value of the water content of the outlet material of the air flow dryer and obtaining a target deviation value of the water content of the outlet material according to the target value and the measured value; and the PID control model controls the hot air speed according to the target deviation value, so that the water content of the outlet material is adjusted according to the target value. And the fitting curve adjusting unit is used for acquiring the water content of the outlet material and the hot air speed within a set time in real time, and fitting according to a time relationship to obtain a fitting curve of the water content of the outlet material and the hot air speed. And the fitting curve adjusting unit also controls the hot air speed of the air flow drying according to the fitting curve, so that the processing intensity of the air flow drying is controlled in a consistent manner.
The invention provides a control system for the pneumatic drying strength of tobacco, which is characterized in that the expected processing strength of an expected pneumatic drying production line of tobacco is set, the temperatures of materials at an inlet and an outlet of a pneumatic drying material of the tobacco are collected, the average value is calculated, the length of the pneumatic drying section and the air speed of hot air are measured and recorded, the actual processing strength of pneumatic drying is calculated on the basis of the data, and then the drying strength is controlled according to the difference value between the actual processing strength and the expected processing strength. The problem that the quality difference of the cut tobacco is large after drying at different processing points and homogenization processing cannot be realized in the existing tobacco pneumatic drying is solved, the consistency of the cut tobacco processing quality can be improved, and the quality of the cut tobacco is improved.
The construction, features and functions of the present invention have been described in detail with reference to the embodiments shown in the drawings, but the present invention is not limited to the embodiments shown in the drawings, and all equivalent embodiments modified or modified by the spirit and scope of the present invention should be protected without departing from the spirit of the present invention.
Claims (10)
1. A method for controlling the drying intensity of a tobacco stream, comprising:
setting the expected processing strength of the tobacco pneumatic drying production line;
acquiring the outlet temperature, the inlet temperature, the hot air speed and the air flow drying section length of the tobacco material air flow drying;
according to the formula Q ═ T-T0) Calculating actual processing strength (ln L-lnS), wherein Q represents the processing strength of the pneumatic dryer; t represents the mean value of the outlet temperature of the air flow dryer, T0The average value of the inlet temperature of the airflow dryer is shown, L represents the length of an airflow drying section, and S represents the wind speed of hot wind;
and judging whether the difference value between the actual processing intensity and the expected processing intensity is smaller than a set threshold value, if not, adjusting the outlet temperature or the hot air speed to enable the difference value to be smaller than the set threshold value.
2. The method of controlling the drying intensity of a tobacco stream according to claim 1, further comprising:
the hot air temperature of air flow drying is controlled by adjusting the water content of the inlet material of the air flow dryer, and the hot air temperature is adjusted by increasing or reducing the water content of the inlet material, so that the discharging temperature is adjusted, and the processing strength of the material is adjusted.
3. The method for controlling the drying intensity of the tobacco airflow according to claim 2, wherein the adjusting the outlet temperature or the hot air speed to make the difference smaller than the set threshold value comprises:
if the actual processing intensity is smaller than the expected processing intensity, the water content of the material at the airflow drying inlet is increased, the temperature of the hot air is increased, or the air speed of the hot air is reduced;
if the actual processing intensity is greater than the expected processing intensity, the temperature of the hot air is reduced or the air speed of the hot air is increased by reducing the water content of the inlet material.
4. The method of controlling the drying intensity of a tobacco stream according to claim 3, further comprising:
and setting a target value of the water content of the outlet material, and establishing a PID control model of the hot air speed and the water content of the outlet material of the air flow dryer so as to adjust the hot air speed along with the target value of the water content of the outlet material and further control the processing strength of the air flow dryer.
5. The method for controlling the drying intensity of the tobacco airflow according to claim 4, wherein the adjusting the air speed of the hot air to follow the target value of the moisture content of the outlet material comprises:
acquiring a measured value of the water content of the outlet material of the air flow dryer, and acquiring a target deviation value of the water content of the outlet material according to the target value and the measured value;
and the PID control model controls the hot air speed according to the target deviation value, so that the water content of the outlet material is adjusted according to the target value.
6. The method for controlling the drying intensity of the tobacco airflow according to claim 5, wherein the adjusting the air speed of the hot air to follow the target value of the moisture content of the material at the outlet further comprises:
acquiring the water content of the outlet material and the hot air speed within a set time in real time, and fitting according to a time relation to obtain a fitting curve of the water content of the outlet material and the hot air speed;
and controlling the air speed of the hot air for air flow drying according to the fitting curve, so that the processing intensity of the air flow drying is controlled in a consistent manner.
7. A system for controlling the drying intensity of a stream of tobacco, comprising:
the first setting unit is used for setting the expected processing strength of the tobacco pneumatic drying production line;
the first acquisition unit is used for acquiring the outlet temperature, the inlet temperature, the hot air speed and the air flow drying section length of the tobacco material air flow drying;
a calculation unit for (T-T) according to the formula Q0) Calculating actual processing strength (ln L-lnS), wherein Q represents the processing strength of the pneumatic dryer; t represents the mean value of the outlet temperature of the air flow dryer, T0The average value of the inlet temperature of the airflow dryer is shown, L represents the length of an airflow drying section, and S represents the wind speed of hot wind;
and the first control unit is used for judging whether the difference value between the actual processing intensity and the expected processing intensity is smaller than a set threshold value, and if not, adjusting the outlet temperature or the hot air speed to enable the difference value to be smaller than the set threshold value.
8. The system for controlling the drying intensity of a tobacco stream according to claim 7, further comprising:
and the second control unit is used for controlling the hot air temperature of air flow drying by adjusting the water content of the inlet material of the air flow dryer, and adjusting the hot air temperature by increasing or reducing the water content of the inlet material, so that the discharging temperature is adjusted, and the processing strength of the material is adjusted.
9. The system for controlling the drying intensity of a tobacco stream according to claim 8, further comprising:
and the PID control unit is used for setting a target value of the water content of the outlet material and establishing a PID control model of the hot air speed and the water content of the outlet material of the air flow dryer so as to adjust the hot air speed along with the target value of the water content of the outlet material and further control the processing strength of the air flow dryer.
10. The system for controlling the drying intensity of a tobacco stream according to claim 9, wherein the PID control unit comprises:
the deviation value adjusting unit is used for obtaining a measured value of the water content of the outlet material of the air flow dryer and obtaining a target deviation value of the water content of the outlet material according to the target value and the measured value; the PID control model controls the hot air speed according to the target deviation value, so that the water content of the outlet material is adjusted according to the target value;
the fitting curve adjusting unit is used for acquiring the water content of the outlet material and the hot air speed within a set time in real time and fitting according to a time relation to obtain a fitting curve of the water content of the outlet material and the hot air speed;
and the fitting curve adjusting unit also controls the hot air speed of the air flow drying according to the fitting curve, so that the processing intensity of the air flow drying is controlled in a consistent manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010643097.3A CN111728253B (en) | 2020-07-06 | 2020-07-06 | Control method and system for tobacco airflow drying strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010643097.3A CN111728253B (en) | 2020-07-06 | 2020-07-06 | Control method and system for tobacco airflow drying strength |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111728253A true CN111728253A (en) | 2020-10-02 |
| CN111728253B CN111728253B (en) | 2022-06-21 |
Family
ID=72654188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010643097.3A Active CN111728253B (en) | 2020-07-06 | 2020-07-06 | Control method and system for tobacco airflow drying strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111728253B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112471572A (en) * | 2020-12-25 | 2021-03-12 | 河南中烟工业有限责任公司 | Method and system for controlling consistency of processing strength of tobacco tunnel type temperature increasing equipment |
| CN113028809A (en) * | 2021-04-13 | 2021-06-25 | 广东中烟工业有限责任公司 | Control method, system and equipment of airflow dryer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1486201A (en) * | 1973-10-15 | 1977-09-21 | Industrial Nucleonics Corp | Tobacco dryer controller |
| CN106690391A (en) * | 2017-03-28 | 2017-05-24 | 中国烟草总公司郑州烟草研究院 | Method for regulating multi-site processing intensity uniformity of in-process products in tobacco drum drying process |
| CN110286660A (en) * | 2019-06-17 | 2019-09-27 | 云南中烟工业有限责任公司 | A method of intensity is processed based on cut tobacco temperature-rise period regulation drying process cut tobacco |
| CN110946306A (en) * | 2019-12-12 | 2020-04-03 | 河南中烟工业有限责任公司 | Quality control method and system based on drum-type cut tobacco moisture regain |
| CN110946314A (en) * | 2019-12-12 | 2020-04-03 | 河南中烟工业有限责任公司 | Method and system for controlling water content of cut tobacco through air flow cut tobacco drying |
-
2020
- 2020-07-06 CN CN202010643097.3A patent/CN111728253B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1486201A (en) * | 1973-10-15 | 1977-09-21 | Industrial Nucleonics Corp | Tobacco dryer controller |
| CN106690391A (en) * | 2017-03-28 | 2017-05-24 | 中国烟草总公司郑州烟草研究院 | Method for regulating multi-site processing intensity uniformity of in-process products in tobacco drum drying process |
| CN110286660A (en) * | 2019-06-17 | 2019-09-27 | 云南中烟工业有限责任公司 | A method of intensity is processed based on cut tobacco temperature-rise period regulation drying process cut tobacco |
| CN110946306A (en) * | 2019-12-12 | 2020-04-03 | 河南中烟工业有限责任公司 | Quality control method and system based on drum-type cut tobacco moisture regain |
| CN110946314A (en) * | 2019-12-12 | 2020-04-03 | 河南中烟工业有限责任公司 | Method and system for controlling water content of cut tobacco through air flow cut tobacco drying |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112471572A (en) * | 2020-12-25 | 2021-03-12 | 河南中烟工业有限责任公司 | Method and system for controlling consistency of processing strength of tobacco tunnel type temperature increasing equipment |
| CN112471572B (en) * | 2020-12-25 | 2022-05-24 | 河南中烟工业有限责任公司 | Method and system for controlling consistency of processing strength of tobacco tunnel type temperature increasing equipment |
| CN113028809A (en) * | 2021-04-13 | 2021-06-25 | 广东中烟工业有限责任公司 | Control method, system and equipment of airflow dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111728253B (en) | 2022-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111728253B (en) | Control method and system for tobacco airflow drying strength | |
| CN110946314B (en) | Method and system for controlling water content of cut tobacco through air flow cut tobacco drying | |
| CN112914139B (en) | Method and system for controlling water adding amount in loosening and moisture regaining process | |
| CN102147613B (en) | Model predictive control method and system for moisture and temperature of tobacco redryer | |
| CN111109643B (en) | Method and system for controlling water content of cut tobacco of sheet cut tobacco drying | |
| CN106690391A (en) | Method for regulating multi-site processing intensity uniformity of in-process products in tobacco drum drying process | |
| CN112790418B (en) | Water adding control method and system for super moisture regain of cut tobacco | |
| CN110286660B (en) | Method for regulating and controlling processing strength of cut tobacco in drying process based on temperature rise process of cut tobacco | |
| CN101488024A (en) | On-line quality evaluation and real-time intelligent control method for tobacco process parameter | |
| CN111728252B (en) | Control method and system for drying strength of tobacco roller | |
| CN110946313B (en) | Method and system for controlling water content of outlet of cut tobacco drying process | |
| CN112931913B (en) | Control method for air-flow type cut stem drying outlet water content | |
| CN106773657A (en) | A kind of roller drying unstable state process head material and the optimising and adjustment method in tailing stage | |
| CN114115393A (en) | Method for controlling moisture and temperature at outlet of cut tobacco dryer for sheet cut tobacco making line | |
| CN105029672B (en) | Precise characterization method for water at outlet of baked cut tobacco | |
| CN114403487B (en) | Water adding control method for loosening and dampening | |
| EA004529B1 (en) | Method and device for optimising process management and process control in an arrangement for producing farinaceous products | |
| CN110262419B (en) | Method for regulating and controlling processing strength of drum-dried cut tobacco based on cut tobacco moisture evaporation enthalpy | |
| CN111165866A (en) | Quality control method and system based on airflow type cut stem drying | |
| CN112471572B (en) | Method and system for controlling consistency of processing strength of tobacco tunnel type temperature increasing equipment | |
| CN110286659B (en) | Method for regulating and controlling processing strength of cut tobacco in drum drying process | |
| CN109211311B (en) | Tobacco shred drying process quality consistency evaluation method based on different production line processing | |
| CN112790421B (en) | Cut stem charging outlet water content control method based on sliding window prediction | |
| CN112641124B (en) | Method and system for controlling consistency of processing strength of tobacco roller type warming equipment | |
| CN110286198B (en) | Method for evaluating consistency of cut tobacco processing strength in drum drying process based on cut tobacco heating process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |