CN113662230B - Uniform feeding control method for redrying production - Google Patents
Uniform feeding control method for redrying production Download PDFInfo
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- CN113662230B CN113662230B CN202110984472.5A CN202110984472A CN113662230B CN 113662230 B CN113662230 B CN 113662230B CN 202110984472 A CN202110984472 A CN 202110984472A CN 113662230 B CN113662230 B CN 113662230B
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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
- A24B3/08—Blending tobacco
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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
- A24B3/10—Roasting or cooling tobacco
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- 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
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The invention discloses an even feeding control method for redrying production, which comprises the steps of dividing a plurality of groups according to a formula ratio and a nicotine value in a feeding mixing stage, measuring and calculating the feeding ratio of each group, obtaining the feeding round number based on the single-batch feeding amount and the total feeding amount corresponding to a minimum batch feeding unit, obtaining the single-group feeding total amount based on the feeding ratio and the total feeding amount of each group, predicting the feeding amount required by tobacco leaves of each group in each round of feeding process by using the single-batch feeding amount, the feeding ratio of each group and the total feeding amount of each group in combination of a recursion thought and a greedy algorithm, and finally fusing the feeding amount prediction results of all groups of all feeding rounds to obtain a target feeding combination scheme. The method effectively reduces the labor cost, is more scientific, and simultaneously ensures the uniformity of the whole feeding and single batch of raw materials, thereby improving the feeding uniformity, strengthening the processing control of the re-drying homogenization and obviously improving the quality stability of the re-dried finished tobacco strips.
Description
Technical Field
The invention relates to the field of tobacco processing, in particular to a uniform feeding control method for redrying production.
Background
With the gradual formation of large groups and large brand development patterns in tobacco industry, the competition at home and abroad is increasingly intensified, and cigarette enterprises pay more and more attention to the homogenization of cigarette product quality. Therefore, homogenization processing is one of the main directions of tobacco processing enterprises at present, and the field correspondingly puts forward the target requirements of redrying homogenization processing: the nicotine variation coefficient of finished tobacco lamina is controlled within 5%, and meanwhile, indexes and methods for evaluating the quality uniformity of flue-cured tobacco are also provided in a new tobacco industry standard YC/T366-2010, and along with the standard of the quality uniformity of the finished threshing and redrying product, the quality and uniformity of the finished tobacco lamina are evaluated effectively by threshing and redrying enterprises, a uniformity evaluation method is established, balanced production work is well done, uniformity and uniformity control consciousness are improved, and the relatively stable state of the finished threshing and redrying tobacco lamina on the characteristics of leaf structure, chemical components, moisture or other quality is kept.
The homogenization formula processing is a physical processing process of uniformly blending raw materials of different grades, and realizes the processes of uniformity and consistency of nicotine components (coefficient of variation CV (coefficient of variation) of the tobacco flake products between different processing batches of the same module and in different processing periods of the products of the same batch, relative stability of smoking quality, coordination and balance of physical indexes and effective control of water fluctuation (coefficient of variation CV (coefficient of variation) of less than 2%).
Threshing and redrying are used as the last ring of a tobacco processing chain, the uniformity and stability of the quality of a tobacco slice product directly influence the stability of the sensory quality of a cigarette product, and the tobacco slice raw material with stable moisture, uniform leaf structure and harmonious internal chemical components is provided for cigarette enterprises and is a problem which needs to be faced and solved by the redrying enterprises.
The threshing and redrying processing is to mix and roast similar materials in a plurality of tobacco production areas, namely a redrying production formula, which is to roast a finished product of tobacco strips by combining and roasting tobacco leaves in a plurality of production areas. The lower the proportion of tobacco leaves in the formula is, the lower the influence of the tobacco leaves on the quality of finished tobacco strips is, and when the nicotine of the fed tobacco leaves is grouped, in order to ensure the feeding uniformity of the tobacco leaves, the manual feeding operation on the site needs to be supervised, but the grouping mode is not optimized at present, so that the grouping mode is more in groups and higher in complexity, and meanwhile, more field space is occupied; in addition, at present, the material is fed manually, so that in terms of operation, in a redrying feeding link, various problems such as manual randomness, uneven material proportion, complex manual estimation, low working efficiency, poor feeding uniformity and the like exist, and when a plurality of materials are mixed and fed, the situation that a certain material is fed in advance exists in the later period is often caused.
Disclosure of Invention
In view of the above, the invention aims to provide an even feeding control method for redrying production, which solves the problems of unscientific grouping and higher complexity of manual feeding in the redrying feeding process, not only reduces the labor cost, but also is more scientific, simultaneously ensures the uniformity of the whole feeding and single batch of raw materials, and effectively avoids the situation that certain material is fed in advance in the later period when a plurality of materials are combined and fed, thereby improving the feeding uniformity, strengthening the homogenizing processing control of redrying, and finally effectively improving the quality stability of redried finished tobacco strips.
The technical scheme adopted by the invention is as follows:
a uniform feeding control method for redrying production comprises the following steps:
in the feeding and mixing stage, dividing a plurality of feeding groups based on the formula ratio in the set formula and the nicotine value of the fed tobacco leaves;
measuring and calculating the feeding ratio of each group of grouped tobacco leaves by using a mean value method;
presetting a batch feeding unit and setting single batch feeding amount;
obtaining a feeding round according to the total feeding amount preset in the redrying processing link and the single batch feeding amount;
obtaining a single group of total feeding amount of each group of tobacco leaves based on the feeding ratio and the total feeding amount;
calculating the feeding amount of each group of tobacco leaves in each feeding round according to the single batch feeding amount, the feeding ratio, the single group feeding total amount and a greedy algorithm;
and fusing the tobacco feeding amount of each group of all the feeding rounds to obtain a target feeding combination scheme.
In at least one possible implementation manner, the calculating the feeding amount of each group of tobacco leaves of each feeding round comprises:
aiming at the first feeding round, determining the feeding amount of each group of tobacco leaves in the first round by using the single batch feeding amount and the feeding ratio;
and aiming at the non-first-round feeding, obtaining the feeding amount of each group of tobacco leaves in the current feeding round by utilizing the single-batch feeding amount, the single-group feeding total amount and the feeding amount of each group of tobacco leaves in the previous feeding round.
In at least one possible implementation manner, the method for calculating the feed ratio comprises the following steps: the feeding ratio of each group of fed tobacco leaves = the stock of each group of fed tobacco leaves ÷ the total stock of the fed tobacco leaves corresponding to the same formula ratio in the formula.
In at least one possible implementation manner, the dividing the plurality of feeding groups comprises:
dividing a set formula ratio in the formula into a maximum formula ratio, a minimum formula ratio and an intermediate formula ratio between the maximum formula ratio and the minimum formula ratio according to a plurality of preset formula ratio thresholds;
dividing the fed tobacco leaves corresponding to the maximum formula ratio into three groups, namely high, medium and low, according to the nicotine size; dividing the fed tobacco leaves corresponding to the intermediate formula ratio into a high group and a low group according to the nicotine size; and (4) dividing the fed tobacco leaves corresponding to the minimum formula ratio into one group.
In at least one possible implementation, the grouping by nicotine dosing includes:
determining a division point according to the nicotine mean value of the fed tobacco leaves as the division point or by combining the nicotine mean value of the fed tobacco leaves and a preset fault-tolerant value;
the fed tobacco leaves under the same formula ratio are divided into three groups of high, medium and low or two groups of high and low by utilizing a dividing point.
The invention has the conception that a plurality of groups are divided by a formula ratio and a nicotine value in a feeding and mixing stage, the feeding ratio of each group is measured and calculated, the feeding frequency is obtained based on the single-batch feeding amount corresponding to the minimum batch feeding unit and the preset feeding total number, meanwhile, the total feeding amount of each group is obtained based on the feeding ratio and the feeding total number, the feeding amount required by each group of tobacco leaves in each feeding process is predicted by utilizing the single-batch feeding amount, the feeding ratio of each group and the total feeding amount of each group in combination of a recursion idea and a greedy algorithm, and finally, the feeding amount prediction results of all groups of all feeding frequency are fused to obtain a target feeding and mixing scheme. The invention solves the problems of unscientific grouping and higher complexity of manual feeding in the process of redrying feeding, not only reduces the labor cost, but also is more scientific, simultaneously ensures the uniformity of the whole feeding and single batch of raw materials, and effectively avoids the situation that certain material is fed in advance in the later period when a plurality of materials are combined for feeding, thereby improving the feeding uniformity, strengthening the control of the redrying homogenization processing and finally effectively improving the quality stability of redried finished tobacco strips.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
fig. 1 is a flowchart of a method for controlling uniform feeding for redrying according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
The invention provides an embodiment of a uniform feeding control method for redrying production, which specifically comprises the following steps of:
s1, dividing a plurality of feeding groups in a feeding and mixing stage based on a formula ratio in a set formula and a nicotine value of fed tobacco leaves;
s2, measuring and calculating the feeding ratio of each group of grouped tobacco leaves by adopting an averaging method;
s3, presetting a batch feeding unit and setting single batch feeding amount;
s4, obtaining a feeding round according to the total feeding amount preset in the redrying processing link and the single batch feeding amount;
s5, obtaining a single-group feeding total amount of each group of tobacco leaves based on the feeding ratio and the total feeding amount;
s6, calculating the feeding amount of each group of tobacco leaves in each feeding round according to the single batch feeding amount, the feeding ratio, the single group feeding total amount and a greedy algorithm;
and S7, fusing the tobacco feeding amount of each group of all the feeding rounds to obtain a target feeding combination scheme.
Further, the calculating the feeding amount of each group of tobacco leaves in each feeding round comprises:
aiming at the first feeding round, determining the feeding amount of each group of tobacco leaves in the first round by using the single batch feeding amount and the feeding ratio;
and aiming at the non-first-round feeding, obtaining the feeding amount of each group of tobacco leaves in the current feeding round by using the single-batch feeding amount, the single-group feeding total amount and the feeding amount of each group of tobacco leaves in the previous feeding round.
Further, the batch charging ratio measuring and calculating mode comprises the following steps: the feeding ratio of each group of fed tobacco leaves = stock of each group of fed tobacco leaves ÷ total stock of fed tobacco leaves corresponding to the same formula ratio in the formula.
Further, the dividing into a plurality of feeding groups comprises:
dividing a set formula ratio in the formula into a maximum formula ratio, a minimum formula ratio and an intermediate formula ratio between the maximum formula ratio and the minimum formula ratio according to a plurality of preset formula ratio thresholds;
dividing the fed tobacco leaves corresponding to the maximum formula ratio into three groups, namely a high group, a medium group and a low group according to the nicotine size; dividing the fed tobacco leaves corresponding to the intermediate formula ratio into a high group and a low group according to the nicotine size; and (4) dividing the fed tobacco leaves corresponding to the minimum formula ratio into one group.
Further, the mode of grouping the nicotine in the fed tobacco leaves comprises the following steps:
determining a division point according to the nicotine mean value of the fed tobacco leaves as the division point or by combining the nicotine mean value of the fed tobacco leaves and a preset fault-tolerant value;
the fed tobacco leaves under the same formula ratio are divided into three groups of high, medium and low or two groups of high and low by utilizing a dividing point.
For ease of understanding the above embodiments and their preferred versions, reference is made to the following schematic illustrations:
the first part, dividing the tobacco leaf groups
In order to control the stable quality of the raw materials and realize the homogenization processing, the nicotine value is mixed and fed at each feeding stage based on the division of the nicotine difference of the tobacco leaves during the re-drying feeding and mixing so as to ensure the uniformity of the raw materials. In practice, it is considered that the tobacco leaves with relatively low formulation ratio are not divided into two groups or coarse groups (only two groups are divided into high and low regions), while the tobacco leaves with relatively high formulation ratio are divided into fine groups, such as three groups of high, medium and low.
Taking a single formula as an example, the formula ratios of the fed tobacco leaves in the formula are respectively 54%, 34% and 12%. Aiming at the fed tobacco leaves with the formulation ratio of 54 percent, the tobacco leaves can be divided into three groups according to high, medium and low nicotine values; aiming at feeding tobacco leaves with the formulation ratio of 34 percent, the tobacco leaves can be divided into two groups, namely high and low nicotine groups; the tobacco leaves fed in the formula ratio of 12% can be divided into one group (or not).
That is, in the above concept, a threshold value may be set based on the formula ratio, for example, the first threshold value is 20%, and if the formula ratio of the fed tobacco leaves is lower than the threshold value, the tobacco leaves may not be divided by nicotine; the second threshold may be, for example, 20% to 30%, and if the formula ratio of the fed tobacco leaves is in this range, the two stages of high and low nicotine can be divided, and it should be noted that, for the division of high and low nicotine, the mean value of nicotine can be used as the division point, and the lower nicotine can be divided into the low group and the higher nicotine can be divided into the high nicotine group; next, the third threshold may be, for example, 30%, if the formula ratio of the fed tobacco leaves is greater than or equal to the threshold, the fed tobacco leaves may be subdivided into three groups, i.e., a high group, a medium group and a low group, for the nicotine level division at this stage, reference may be made to the above, and in the actual operation, an error tolerance value may be added or subtracted at the division point, for example, as verified by a large amount of nicotine data, and the final group division point is obtained by using 0.2 as an error tolerance comparison to match the division difference value.
The second part, calculating the batch charging ratio of each group (batch charging ratio)
The feeding ratio of each grouped group of tobacco leaves is calculated by using a mean value method, for example, for a high group of feeding tobacco leaves with a formula ratio of 54%, the feeding ratio is equal to the inventory of the feeding tobacco leaves of the high group divided by the total inventory of the feeding tobacco leaves with the formula ratio of 54%, and so on, so that the feeding ratio of each group of feeding tobacco leaves is obtained.
The third part, measurement and calculation of the combination scheme
The material feeding, assembling and calculating can be carried out by utilizing a recursion idea and combining a greedy algorithm. Specifically, in the feeding operation of redrying production, a feeding trolley is taken as a minimum batch feeding unit, feeding pieces are fixed in each batch, and the feeding ratio of each group is recorded as b i Where i =1,2,3 … … n. Assuming that the total number of the selected, sorted and fed materials in the redrying processing is sigma pieces, calculating the total feeding turn = sigma/gamma, and performing recursive calculation; calculating the total number a of the tobacco leaves fed in each group i ＝σ*b i (ii) a According to a greedy algorithm, the optimal batch charging set of each round is calculated for each round of charging, for example, the batch charging amount of each round can be recorded as a ij Which represents the jth round and ith group of the charging membersCounting, and recording the feeding ratio of each group of each round as b ij The specific calculation mode of each round of feeding and assembling scheme refers to the following:
first round, j =1, batch size a of each group i1 The calculation process is as follows:
①x i1 ＝γ*b i1 ；
②
③x i ＝x i1 -[x i1 ](ii) a Will array x i Sorting, taking out y in descending order i The number of the cells; let g (x) i ) = {0,1}, when x i When taken, g (x) i ) =1, g (x) if not taken i )＝0；
④a i1 ＝[x i1 ]+g(x i )
Second round, j =2, batch size b of each group i2 The calculation process is as follows:
①
wherein, the feed amount of the redrying processing is represented by alpha;
②
③x i ＝x i2 -[x i2 ](ii) a Will array x i Sorting, taking out y in descending order i Number, let g (x) i ) = 0,1, when x is greater i When taken, g (x) i ) =1, g (x) if not taken i )＝0；
④a i2 ＝[x i2 ]+g(x i )
By analogy, when j > 2:
①
②
③x i ＝x i2 -[x i2 ](ii) a Will array x i Sorting, taking out y in descending order i Number, let g (x) i ) = 0,1, when x is greater i When taken, g (x) i ) =1, g (x) if not taken i )＝0；
④a ij ＝[x ij ]+g(x i )
Thus, by way of further example, assume that the redrying modules feed an amount of tobacco a per group i (i =1,2,3,4, namely four tobacco leaf groups), the feeding ratio (feeding ratio) is as follows: 10, 30, and the total material feeding quantity is fixed to be 100, 9 materials are fed in each round, and 12 rounds are fed in total, so that the material feeding assembly scheme shown in the following table is finally obtained:
based on the implementation modes of nicotine range division, feeding ratio measurement and calculation, feeding assembly and the like, the method can be compiled into an algorithm program, and in actual operation, only basic information of redrying feeding is needed to be input, so that a precise feeding assembly result can be automatically measured and calculated according to the process, and the actual operation of assembly feeding can be conveniently guided by field personnel.
In summary, the idea of the present invention is to divide a plurality of groups by a formula ratio and a nicotine value at a feeding and mixing stage, measure and calculate a feeding ratio of each group, obtain a feeding round based on a single-batch feeding amount corresponding to a minimum batch feeding unit and a preset feeding total amount, obtain a single-group feeding total amount based on the feeding ratio of each group and the feeding total amount, predict a feeding amount required by tobacco leaves of each group in each feeding round by using the single-batch feeding amount, the feeding ratio of each group and the feeding total amount of each group in combination with a recursion thought and a greedy algorithm, and finally fuse the feeding amount prediction results of all groups of all feeding rounds to obtain a target feeding combination scheme. The invention solves the problems of unscientific grouping and higher complexity of manual feeding in the redrying feeding process, not only reduces the labor cost, but also is more scientific, simultaneously ensures the uniformity of the whole feeding and a single batch of raw materials, and effectively avoids the condition that a certain material is fed in advance in the later period when a plurality of materials are combined and fed, thereby improving the feeding uniformity, strengthening the redrying homogenization processing control and finally effectively improving the quality stability of redried finished tobacco strips.
In the embodiments of the present invention, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, and means that there may be three relationships, for example, a and/or B, and may mean that a exists alone, a and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" and similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, wherein a, b and c can be single or multiple.
The structure, features and effects of the present invention have been described in detail with reference to the embodiments shown in the drawings, but the above embodiments are merely preferred embodiments of the present invention, and it should be understood that technical features related to the above embodiments and preferred modes thereof can be reasonably combined and configured into various equivalent schemes by those skilled in the art without departing from and changing the design idea and technical effects of the present invention; therefore, the invention is not limited to the embodiments shown in the drawings, and all the modifications and equivalent embodiments that can be made according to the idea of the invention are within the scope of the invention as long as they are not beyond the spirit of the description and the drawings.
Claims (2)
1. A uniform feeding control method for redrying production is characterized by comprising the following steps:
in the feeding and mixing stage, a plurality of feeding groups are divided based on the formula ratio in the set formula and the nicotine value of the fed tobacco leaves, and the feeding groups comprise: dividing a set formula ratio in the formula into a maximum formula ratio, a minimum formula ratio and an intermediate formula ratio between the maximum formula ratio and the minimum formula ratio according to a plurality of preset formula ratio thresholds; dividing the fed tobacco leaves corresponding to the maximum formula ratio into three groups, namely high, medium and low, according to the nicotine size; dividing the fed tobacco leaves corresponding to the intermediate formula ratio into a high group and a low group according to the nicotine size; only dividing the fed tobacco leaves corresponding to the minimum formula ratio into one group;
the method for measuring and calculating the feeding ratio of each group of grouped tobacco leaves by adopting a mean value method comprises the following steps: the feeding ratio of each group of fed tobacco leaves = stock of each group of fed tobacco leaves ÷ total stock of the fed tobacco leaves corresponding to the same formula ratio in the formula;
presetting a batch feeding unit and setting single batch feeding amount;
obtaining a feeding round according to the total feeding amount preset in the redrying processing link and the single batch feeding amount;
obtaining a single group of total feeding amount of each group of tobacco leaves based on the feeding ratio and the total feeding amount;
calculating the feeding amount of each group of tobacco leaves in each feeding round according to the feeding amount of the single batch, the feeding ratio, the total feeding amount of the single group and a greedy algorithm, wherein the method comprises the step of determining the feeding amount of each group of tobacco leaves in the first round by using the feeding amount of the single batch and the feeding ratio aiming at the first feeding round; aiming at the non-first-round feeding, obtaining the feeding amount of each group of tobacco leaves in the current feeding round by using the single-batch feeding amount, the single-group feeding total amount and the feeding amount of each group of tobacco leaves in the previous feeding round;
and fusing the tobacco feeding amount of each group of all the feeding rounds to obtain a target feeding combination scheme.
2. The method of claim 1, wherein the grouping of the nicotine in the tobacco leaves comprises:
determining a division point according to the nicotine mean value of the fed tobacco leaves as the division point or by combining the nicotine mean value of the fed tobacco leaves and a preset fault-tolerant value;
the fed tobacco leaves under the same formula ratio are divided into three groups of high, medium and low or two groups of high and low by utilizing a dividing point.
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| CN101828761A (en) * | 2010-05-11 | 2010-09-15 | 云南省烟草烟叶公司 | Process for controlling formula threshing uniform feeding |
| CN104983051A (en) * | 2015-06-05 | 2015-10-21 | 湖北中烟工业有限责任公司 | Redrying processing method of single-level primarily-dried tobacco |
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| CN101828761A (en) * | 2010-05-11 | 2010-09-15 | 云南省烟草烟叶公司 | Process for controlling formula threshing uniform feeding |
| CN104983051A (en) * | 2015-06-05 | 2015-10-21 | 湖北中烟工业有限责任公司 | Redrying processing method of single-level primarily-dried tobacco |
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