CN113892668A - Control method of agglomerated cut tobacco in cut tobacco drying process - Google Patents

Control method of agglomerated cut tobacco in cut tobacco drying process Download PDF

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CN113892668A
CN113892668A CN202111364892.XA CN202111364892A CN113892668A CN 113892668 A CN113892668 A CN 113892668A CN 202111364892 A CN202111364892 A CN 202111364892A CN 113892668 A CN113892668 A CN 113892668A
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tobacco
air door
agglomerated
moisture
steam flow
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CN113892668B (en
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陈霞
李文伟
李培培
孟霞
王文飞
赵伟民
赵海娟
杜陕涛
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China Tobacco Henan Industrial Co Ltd
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    • 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
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/06—Loosening tobacco leaves 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
    • 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
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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Abstract

The invention provides a method for controlling agglomerated cut tobacco in a cut tobacco drying process, which comprises the following steps: setting influence parameters of a humidifying device and a drying device on the agglomerated cut tobacco in the cut tobacco drying process, and acquiring the setting conditions of the influence parameters; presetting a normal level, a lower level and an upper level of the set value of the influence parameter according to the adjustable range, and establishing a test factor level table by taking the influence parameter as a test factor; setting the number of factor test points, and changing the test factor level according to the test factor level table so as to perform effect tests on the agglomeration amount, the water content, the filling value and the whole tobacco shred rate of the tobacco shreds in the tobacco shred drying process; and obtaining test data after the equipment operates stably, and performing regression analysis on the amount of the bound filaments, the water content, the filling value and the whole filament rate according to the test data to determine the control priority of the influence parameters. The invention can improve the stability of the moisture content of the cut tobacco in the cut tobacco drying process so as to reduce the conglomeration of the cut tobacco.

Description

Control method of agglomerated cut tobacco in cut tobacco drying process
Technical Field
The invention relates to the technical field of tobacco processing, in particular to a control method of agglomerated cut tobacco in a cut tobacco drying process.
Background
The pneumatic drying is one of the main drying modes of the cut tobacco, and the pneumatic drying device uses high-temperature gas to replace air in pneumatic conveying so as to dehydrate the cut tobacco in the suspension conveying process. However, the tobacco shreds are easy to accumulate at the turning position of the pipeline, and generate a rolling effect under the combined action of the outer wall of the pipeline and wind power, and the tobacco shreds roll, mix and slide along the outer wall of the pipeline to advance, so that the tobacco shreds are wound to form lumps, the sufficient and uniform contact between the tobacco shreds and hot air flow is influenced, the internal and external dehydration speeds of the tobacco shreds in the lumps are inconsistent, and the problem of high moisture content of the tobacco shreds inside the dried tobacco shreds on the outer surface is caused. Therefore, the method has important research significance on how to control the agglomerated cut tobacco in the cut tobacco drying process.
Disclosure of Invention
The invention provides a method for controlling agglomerated cut tobacco in a cut tobacco drying process, which solves the problem that the agglomerated cut tobacco in the existing cut tobacco drying process is easy to cause high water content of the cut tobacco, and can improve the stability of the water content of the cut tobacco in the cut tobacco drying process so as to reduce the agglomerated cut tobacco.
In order to achieve the above purpose, the invention provides the following technical scheme:
a method for controlling agglomerated tobacco shreds in a tobacco shred drying process comprises the following steps:
setting influence parameters of a humidifying device and a drying device on the agglomerated cut tobacco in the cut tobacco drying process, and acquiring the setting conditions of the influence parameters;
presetting a normal level, a lower level and an upper level of the set value of the influence parameter according to the adjustable range, and establishing a test factor level table by taking the influence parameter as a test factor;
setting the number of factor test points, and changing the test factor level according to the test factor level table so as to perform effect tests on the agglomeration amount, the water content, the filling value and the whole tobacco shred rate of the tobacco shreds in the tobacco shred drying process;
and obtaining test data after the equipment operates stably, and performing regression analysis on the amount of the bound filaments, the water content, the filling value and the whole filament rate according to the test data to determine the control priority of the influence parameters.
Preferably, the setting of the parameters of the influence of the humidifying equipment and the drying equipment on the agglomerated cut tobacco in the cut tobacco drying process includes:
setting the steam flow, the opening of the inlet moisture exhaust air door, the opening of the upper moisture exhaust air door and the opening of the outlet moisture exhaust air door of the humidifying equipment as the influence parameters;
and setting the rotating speed of a roller of the dryer, the temperature of hot air and the negative pressure of moisture removal as the influence parameters.
Preferably, the performing regression analysis on the amount of the bond silk, the water content and the filling value according to the test data comprises:
and estimating the steam flow, the drum rotating speed, and the effect and the coefficient of the steam flow and the drum rotating speed combined on the amount of the agglomerated yarn according to the test data to obtain a regression equation of the agglomerated specific quantity.
Preferably, the performing regression analysis on the amount of the bound filaments, the water content, the filling value and the whole filament rate according to the test data further includes:
and estimating the steam flow, the moisture-removing negative pressure and the effect and coefficient of the steam flow and the moisture-removing negative pressure on the tobacco shred filling value according to the test data to obtain a regression equation of the filling value.
Preferably, the performing regression analysis on the amount of the bound filaments, the water content, the filling value and the whole filament rate according to the test data further includes:
and estimating the steam flow, the opening degree of the inlet moisture exhaust air door, the hot air temperature, and the effect and the coefficient of the steam flow and the opening degree of the inlet moisture exhaust air door on the moisture content of the cut tobacco according to the test data to obtain a regression equation of the moisture content.
Preferably, the performing regression analysis on the amount of the bound filaments, the water content, the filling value and the whole filament rate according to the test data further includes:
according to test data, estimating the effect and coefficient of the tobacco shred trimming rate by combining the steam flow, the inlet moisture discharge air door opening, the outlet moisture discharge air door opening, the hot air temperature, the roller rotating speed and the moisture discharge negative pressure, the steam flow and the hot air temperature, the inlet moisture discharge air door opening and the outlet moisture discharge air door opening, and the inlet moisture discharge air door opening and the roller rotating speed so as to obtain a regression equation of the trimming rate.
Preferably, the method further comprises the following steps:
and obtaining corresponding decision coefficients according to a regression equation model of the lumping silk amount, the water content, the filling value and the whole silk rate, and controlling the priority sequence of the influence parameters according to the decision coefficients.
Preferably, the prioritizing of controlling the influence parameters includes:
the control priority sequence of the amount of the agglomerated silk is as follows: steam flow > drum speed > combination of steam flow and drum speed;
the priority sequence of controlling the whole silk rate is as follows: the combination of the rotating speed of the roller, the opening degree of the inlet moisture exhaust air door, the combination of the rotating speed of the roller and the opening degree of the inlet moisture exhaust air door, the opening degree of the outlet moisture exhaust air door, the moisture exhaust negative pressure, the combination of the opening degree of the outlet moisture exhaust air door and the moisture exhaust negative pressure, the combination of the steam flow and the opening degree of the inlet moisture exhaust air door and the opening degree of the outlet moisture exhaust air door, and the hot air temperature.
Preferably, the method further comprises the following steps:
the opening degree of the inlet moisture exhaust air door and the opening degree of the outlet moisture exhaust air door are reduced or the moisture exhaust negative pressure is increased so as to increase the tobacco shred adjusting rate of the tobacco shreds;
through reducing the steam flow the moisture air door aperture is arranged to the import the moisture air door aperture is arranged to the export with hot-blast temperature to reduce the mass silk volume.
The invention provides a control method of agglomerated cut tobacco in a cut tobacco drying process, which is characterized in that effect tests are carried out on the amount, the water content, the filling value and the whole tobacco rate of the agglomerated cut tobacco by setting the influence parameters of the agglomerated cut tobacco and establishing a test factor level table, and regression analysis is carried out according to test data to determine the control priority of the influence parameters. The problem of the agglomeration pipe tobacco of current pipe tobacco drying process easily causes the pipe tobacco moisture content to be high is solved, the stability of pipe tobacco moisture content in the pipe tobacco drying can be improved to reduce the agglomeration pipe tobacco.
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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 diagram of a control method of agglomerated cut tobacco in the cut tobacco drying process provided by the 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.
Aiming at the problem that the moisture content of the cut tobacco is unstable due to the agglomerated cut tobacco in the current cut tobacco drying process, the invention provides the control method of the agglomerated cut tobacco in the cut tobacco drying process. The problem of the agglomeration pipe tobacco of current pipe tobacco drying process easily causes the pipe tobacco moisture content to be high is solved, the stability of pipe tobacco moisture content in the pipe tobacco drying can be improved to reduce the agglomeration pipe tobacco.
As shown in fig. 1, a method for controlling agglomerated tobacco shreds in a tobacco shred drying process includes:
s1: and setting the influence parameters of the humidifying equipment and the drying equipment on the agglomerated cut tobacco in the cut tobacco drying process, and acquiring the setting conditions of the influence parameters.
S2: and presetting a normal level, a lower level and an upper level of the set value of the influence parameter according to the adjustable range, and establishing a test factor level table by taking the influence parameter as a test factor.
S3: and setting the number of the factor test points, and changing the test factor level according to the test factor level table so as to perform effect tests on the agglomeration filament amount, the water content, the filling value and the filament finishing rate of the tobacco during the drying process of the tobacco.
S4: and obtaining test data after the equipment operates stably, and performing regression analysis on the amount of the bound filaments, the water content, the filling value and the whole filament rate according to the test data to determine the control priority of the influence parameters.
Further, the setting of the parameters of the influence of the humidifying equipment and the drying equipment on the agglomerated cut tobacco in the cut tobacco drying process comprises the following steps: setting the steam flow, the opening of the inlet moisture exhaust air door, the opening of the upper moisture exhaust air door and the opening of the outlet moisture exhaust air door of the humidifying equipment as the influence parameters.
And setting the rotating speed of a roller of the dryer, the temperature of hot air and the negative pressure of moisture removal as the influence parameters.
Specifically, two-level factor design is carried out, and the test factors comprise the steam flow, the opening degree of an inlet moisture exhaust air door, the opening degree of an upper moisture exhaust air door, the opening degree of an outlet moisture exhaust air door of the SIROX humidifying equipment, the rotating speed of a roller of the KLD dryer, the hot air temperature and the moisture exhaust negative pressure. For each test factor, the current setting state is taken as the center, and the adjustable range of the influence parameter is expanded upwards and downwards, so that 2 levels can be set, namely an upper level higher than a normal setting value and a lower level lower than the normal setting value, as shown in table 1, and the difference between the 2 levels is not small enough to ensure the test effect.
TABLE 1
Figure BDA0003360514290000041
Figure BDA0003360514290000051
The water content, temperature, tobacco structure and filling value of tobacco can be sampled and detected by conventional method. And the sampling and detection of the amount of the agglomerated filaments includes: sampling about 2kg from the outlet of a KLD cut tobacco dryer, weighing, sorting and quickly weighing the agglomerated cut tobacco, and calculating the agglomerated cut tobacco rate; the test was repeated twice and averaged.
Test protocol 27-3Design, factor 16 test points, central point test 5, total 21 tests. The test protocol is shown in table 2;
TABLE 2
Figure BDA0003360514290000052
The test procedure and requirements are as follows:
(1) the test factor levels were varied as per table 2, with other production conditions (parameters) remaining unchanged; and sampling and detecting after the equipment runs stably. It requires 2 repeated sampling tests with a moderate time interval between the two samples.
(2) The test times are more, and the test can be completed in multiple days or shifts. In order to reduce the influence of the change of the production conditions on the test results, the stability of the raw materials and the production conditions should be ensured as much as possible during the test.
Further, the regression analysis of the amount of the bond silk, the water content and the filling value according to the test data comprises:
and estimating the steam flow, the drum rotating speed, and the effect and the coefficient of the steam flow and the drum rotating speed combined on the amount of the agglomerated yarn according to the test data to obtain a regression equation of the agglomerated specific quantity.
In one embodiment, the regression analysis results are shown in tables 3, 4 and 5:
TABLE 3
Figure BDA0003360514290000061
Analysis of variance is as follows:
TABLE 4
Figure BDA0003360514290000062
The coefficients are estimated as follows:
TABLE 5
Figure BDA0003360514290000063
The regression analysis result shows that the steam flow and the roller rotating speed are main factors influencing the agglomerated tobacco shred quantity, and interaction exists between the steam flow and the roller rotating speed; the primary and secondary sequence of influence is A > E > AE; and thirdly, the quantity of the agglomerated yarn is lowest at low steam flow and is less influenced by the rotating speed of the roller, and the quantity of the agglomerated yarn is highest at high steam flow and high rotating speed of the roller.
Further, the regression analysis of the amount of the bond silk, the water content and the filling value according to the test data further comprises:
and estimating the steam flow, the moisture-removing negative pressure and the effect and coefficient of the steam flow and the moisture-removing negative pressure on the tobacco shred filling value according to the test data to obtain a regression equation of the filling value.
In one embodiment, the results of the regression analysis are shown in tables 6, 7 and 8:
the effect of the padding values and the estimation of the coefficients are as follows:
TABLE 6
Figure BDA0003360514290000071
The results of the anova were as follows:
TABLE 7
Figure BDA0003360514290000072
The coefficients are estimated as follows:
TABLE 8
Figure BDA0003360514290000073
The regression analysis result shows that the steam flow and the moisture-removing negative pressure are main factors influencing the filling value, and interaction exists between the steam flow and the moisture-removing negative pressure; the primary sequence and the secondary sequence of the influence are AG > A > G; and the filling value is the highest when the steam flow is high and the moisture-removing negative pressure is high, and the filling value is the lowest when the steam flow is high, the moisture-removing negative pressure is low or the steam flow is low and the moisture-removing negative pressure is high.
Further, the regression analysis of the amount of the bond silk, the water content and the filling value according to the test data further comprises:
and estimating the steam flow, the opening degree of the inlet moisture exhaust air door, the hot air temperature, and the effect and the coefficient of the steam flow and the opening degree of the inlet moisture exhaust air door on the moisture content of the cut tobacco according to the test data to obtain a regression equation of the moisture content.
In one embodiment, the regression analysis results are shown in tables 9, 10 and 11:
the effect and coefficient of water cut are estimated as follows:
TABLE 9
Figure BDA0003360514290000081
The results of the anova were as follows:
watch 10
Figure BDA0003360514290000082
The coefficients are estimated as follows:
TABLE 11
Figure BDA0003360514290000083
The regression analysis result shows that the steam flow, the opening degree of the inlet moisture exhaust air door and the hot air temperature are main factors influencing the water content, and interaction exists between the steam flow and the opening degree of the inlet moisture exhaust air door; the primary sequence and the secondary sequence of the influence are AB, F, B and A; the water content is lowest when the steam flow is low and the moisture exhaust air door is high, and the water content is highest when the steam flow is low and the moisture exhaust air door is low; the higher the hot air temperature is, the lower the moisture content is.
Further, the regression analysis of the amount of the bond silk, the water content and the filling value according to the test data further comprises:
according to test data, estimating the effect and coefficient of the tobacco shred trimming rate by combining the steam flow, the inlet moisture discharge air door opening, the outlet moisture discharge air door opening, the hot air temperature, the roller rotating speed and the moisture discharge negative pressure, the steam flow and the hot air temperature, the inlet moisture discharge air door opening and the outlet moisture discharge air door opening, and the inlet moisture discharge air door opening and the roller rotating speed so as to obtain a regression equation of the trimming rate.
In one embodiment, the regression analysis results are shown in table 12, table 13, and table 14:
the effect and coefficient of the filament-straightening ratio are estimated as follows:
TABLE 12
Figure BDA0003360514290000091
The results of the anova were as follows:
watch 13
Figure BDA0003360514290000092
The coefficient of the whole filament rate is estimated as follows:
TABLE 14
Figure BDA0003360514290000101
The method further comprises the following steps: and obtaining corresponding decision coefficients according to a regression equation model of the lumping silk amount, the water content, the filling value and the whole silk rate, and controlling the priority sequence of the influence parameters according to the decision coefficients.
In practical application, the regression analysis result shows that the decision coefficient and the adjustment decision coefficient of the mass clustering filament regression model are respectively 90.68% and 88.53%, the decision coefficient and the adjustment decision coefficient of the filling value regression model are respectively 62.50% and 53.85%, the decision coefficient and the adjustment decision coefficient of the moisture content regression model are respectively 75.83% and 68.92%, the decision coefficient and the adjustment decision coefficient of the whole filament rate regression model are respectively 94.99% and 89.98%, and the filament breakage rate does not establish a regression model with statistical significance. Therefore, it can be considered that the 7 parameters have a large influence on the amount of the bound filaments and the whole filament rate when they are changed in the range concerned, and have a small influence on the remaining several indexes.
Further, the prioritizing the control of the impact parameters includes: the control priority sequence of the amount of the agglomerated silk is as follows: steam flow > drum speed > steam flow in combination with drum speed. The priority sequence of controlling the whole silk rate is as follows: the combination of the rotating speed of the roller, the opening degree of the inlet moisture exhaust air door, the combination of the rotating speed of the roller and the opening degree of the inlet moisture exhaust air door, the opening degree of the outlet moisture exhaust air door, the moisture exhaust negative pressure, the combination of the opening degree of the outlet moisture exhaust air door and the moisture exhaust negative pressure, the combination of the steam flow and the opening degree of the inlet moisture exhaust air door and the opening degree of the outlet moisture exhaust air door, and the hot air temperature.
The method further comprises the following steps: through reducing import arranges damp air door aperture the export arranges damp air door aperture or increase arrange damp negative pressure to increase the whole silk rate of pipe tobacco. Through reducing the steam flow the moisture air door aperture is arranged to the import the moisture air door aperture is arranged to the export with hot-blast temperature to reduce the mass silk volume.
Specifically, the agglomerated yarn amount is the lowest at low steam flow and is less influenced by the rotating speed of the drum, the yarn finishing rate is the highest at low steam flow and low hot air temperature, and the yarn finishing rate is the highest at high drum rotating speed and low opening degree of the inlet moisture exhaust air door, so that the requirements of the agglomerated yarn amount and the yarn finishing rate can be met at low steam flow and high drum rotating speed; the opening degree of the low inlet moisture exhaust air door and the opening degree of the low outlet moisture exhaust air door are the highest in filament arranging rate, and the higher the moisture exhaust negative pressure is, the higher the filament arranging rate is. In conclusion, the steam flow, the opening degree of the moisture exhaust air doors at the inlet and the outlet and the hot air temperature are in low levels, and the rotating speed of the roller and the moisture exhaust negative pressure are in high levels, so that the agglomerated yarn quantity is reduced and the yarn finishing rate is improved.
The invention provides a control method of agglomerated tobacco shreds in a tobacco shred drying process, which is characterized in that the control priority of the influence parameters is determined by setting the influence parameters of the agglomerated tobacco shreds, establishing a test factor level table to perform effect tests on the amount, the water content, the filling value and the whole shred ratio, and performing regression analysis according to test data. The problem of the agglomeration pipe tobacco of current pipe tobacco drying process easily cause the pipe tobacco moisture content to be high is solved, the stability of pipe tobacco moisture content in the pipe tobacco drying can be improved, reduce the agglomeration pipe tobacco.
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 (9)

1. A control method of agglomerated cut tobacco in a cut tobacco drying process is characterized by comprising the following steps:
setting influence parameters of a humidifying device and a drying device on the agglomerated cut tobacco in the cut tobacco drying process, and acquiring the setting conditions of the influence parameters;
presetting a normal level, a lower level and an upper level of the set value of the influence parameter according to the adjustable range, and establishing a test factor level table by taking the influence parameter as a test factor;
setting the number of factor test points, and changing the test factor level according to the test factor level table so as to perform effect tests on the agglomeration amount, the water content, the filling value and the whole tobacco shred rate of the tobacco shreds in the tobacco shred drying process;
and obtaining test data after the equipment operates stably, and performing regression analysis on the amount of the bound filaments, the water content, the filling value and the whole filament rate according to the test data to determine the control priority of the influence parameters.
2. The method for controlling the agglomerated cut tobacco in the cut tobacco drying process according to claim 1, wherein the setting of the parameters of the influence of the humidifying equipment and the drying equipment on the agglomerated cut tobacco in the cut tobacco drying process comprises:
setting the steam flow, the opening of the inlet moisture exhaust air door, the opening of the upper moisture exhaust air door and the opening of the outlet moisture exhaust air door of the humidifying equipment as the influence parameters;
and setting the rotating speed of a roller of the dryer, the temperature of hot air and the negative pressure of moisture removal as the influence parameters.
3. The method according to claim 2, wherein the regression analysis of the amount of agglomerated tobacco, the water content, the filling value, and the percentage of whole tobacco is performed based on test data, and the method comprises:
and estimating the steam flow, the drum rotating speed, and the effect and the coefficient of the steam flow and the drum rotating speed combined on the amount of the agglomerated yarn according to the test data to obtain a regression equation of the agglomerated specific quantity.
4. The method for controlling agglomerated tobacco shreds in a tobacco shred drying process according to claim 3, wherein the regression analysis of the amount of agglomerated tobacco shreds, the water content, the filling value and the whole shred ratio is performed based on test data, further comprising:
and estimating the steam flow, the moisture-removing negative pressure and the effect and coefficient of the steam flow and the moisture-removing negative pressure on the tobacco shred filling value according to the test data to obtain a regression equation of the filling value.
5. The method for controlling agglomerated tobacco shreds in a tobacco shred drying process according to claim 4, wherein the regression analysis of the amount of agglomerated tobacco shreds, the water content, the filling value and the whole shred ratio is performed based on test data, further comprising:
and estimating the steam flow, the opening degree of the inlet moisture exhaust air door, the hot air temperature, and the effect and the coefficient of the steam flow and the opening degree of the inlet moisture exhaust air door on the moisture content of the cut tobacco according to the test data to obtain a regression equation of the moisture content.
6. The method for controlling agglomerated tobacco shreds in a tobacco shred drying process according to claim 5, wherein the regression analysis of the amount of agglomerated tobacco shreds, the water content, the filling value and the whole shred ratio is performed based on test data, further comprising:
according to test data, estimating the effect and coefficient of the tobacco shred trimming rate by combining the steam flow, the inlet moisture discharge air door opening, the outlet moisture discharge air door opening, the hot air temperature, the roller rotating speed and the moisture discharge negative pressure, the steam flow and the hot air temperature, the inlet moisture discharge air door opening and the outlet moisture discharge air door opening, and the inlet moisture discharge air door opening and the roller rotating speed so as to obtain a regression equation of the trimming rate.
7. The method for controlling agglomerated tobacco shreds in a tobacco shred drying process according to claim 6, further comprising:
and obtaining corresponding decision coefficients according to a regression equation model of the lumping silk amount, the water content, the filling value and the whole silk rate, and controlling the priority sequence of the influence parameters according to the decision coefficients.
8. The method according to claim 7, wherein the prioritizing of the influence parameters includes:
the control priority sequence of the amount of the agglomerated silk is as follows: steam flow > drum speed > combination of steam flow and drum speed;
the priority sequence of controlling the whole silk rate is as follows: the combination of the rotating speed of the roller, the opening degree of the inlet moisture exhaust air door, the combination of the rotating speed of the roller and the opening degree of the inlet moisture exhaust air door, the opening degree of the outlet moisture exhaust air door, the moisture exhaust negative pressure, the combination of the opening degree of the outlet moisture exhaust air door and the moisture exhaust negative pressure, the combination of the steam flow and the opening degree of the inlet moisture exhaust air door and the opening degree of the outlet moisture exhaust air door, and the hot air temperature.
9. The method for controlling agglomerated tobacco shreds in a tobacco shred drying process according to claim 8, further comprising:
the opening degree of the inlet moisture exhaust air door and the opening degree of the outlet moisture exhaust air door are reduced or the moisture exhaust negative pressure is increased so as to increase the tobacco shred adjusting rate of the tobacco shreds;
through reducing the steam flow the moisture air door aperture is arranged to the import the moisture air door aperture is arranged to the export with hot-blast temperature to reduce the mass silk volume.
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