A method for determining feeding flow rate according to batch feeding amount

Abstract

The present invention provides a method for determining the feeding flow rate according to the batch feeding amount. For tobacco leaves continuously produced by super-return loosening and leaf moistening feeding processes, before the super-return loosening process, various data of the current batch of dry cigarette package materials, historical data of the moisture content of the cigarette packages before water addition, target outlet moisture content, historical data of the water absorption coefficient of the cigarette packages and the total feeding amount are obtained, and the super-return weight and the total material amount at the leaf moistening outlet of this batch are predicted. After the weight proportion of each cigarette package in this batch is obtained, the feeding amount of each cigarette package in the leaf moistening feeding section is allocated, and the feeding flow rate is adjusted according to the material flow data of the flow scale during the production process. After the super-return loosening process, the weight of each cigarette package, the moisture content of the cigarette package after water addition, and the water addition amount are recorded respectively, and the water absorption coefficient of each cigarette package is calculated, and the historical database is updated. Based on the historical data of the cigarette packages before and after super-return loosening and water addition, this method converts the batch feeding index into the flow feeding index, ensures the integrity of the cigarette formula and uniform feeding, and stably improves the intrinsic quality of the cigarette.

Description

Technical Field

[0001] The invention relates to the field of cigarette shred making technology, and in particular to a method for determining a feeding flow rate according to a batch feeding amount in a leaf moistening and feeding process of cigarette shred making. Background Art

[0002] The ultra-loosening process of the tobacco shreds process heats and humidifies the standard weight of tobacco leaves, allowing the dried and compacted tobacco leaves to fully expand and increase their moisture content, and then enter the leaf moistening and feeding process. The leaf moistening and feeding process is an important process in the tobacco shreds manufacturing process. Its main function is to expand and rehydrate the tobacco leaves by heating and humidifying them. At the same time, flavoring materials are added according to the formula and stirred evenly in the drum to improve the taste of the finished cigarettes. In actual production, the process indicators provide the total weight of materials to be added in a batch, that is, the batch feeding amount.

[0003] In the process of moistening and feeding, there are generally two ways to feed the amount specified in the formula. One is flow feeding (fixed ratio feeding), that is, the wet tobacco leaves after super-loosening are used as the standard, and the ratio of instantaneous feeding flow to instantaneous material flow is a certain value. The advantage of this method is that it is easy to control, and the instantaneous feeding amount is only related to the instantaneous feeding amount of the moistening device. The other is batch feeding, that is, the dry tobacco leaves before super-loosening are used as the standard, and the total feeding amount of a batch of tobacco leaves is a fixed value. The advantage is that the weight of dry tobacco leaves is used as the standard, which reduces the impact of moisture fluctuations on product quality and ensures the integrity of the cigarette formula.

[0004] However, the moisture content of tobacco leaves fluctuates greatly due to various factors during production, storage and transportation. The weight of tobacco leaves of fixed weight will increase significantly after processing in the ultra-loosening process, and the total weight is difficult to estimate. Therefore, the flow feeding method is difficult to calculate the instantaneous feeding amount based on the instantaneous flow rate, which can easily cause insufficient feeding of tobacco leaves at the end of the feed or excess feed liquid; the batch feeding method does not consider the impact of moisture fluctuations in tobacco packages in each process on product quality, resulting in large differences in product quality of the same batch of tobacco leaves. Summary of the invention

[0005] The purpose of the present invention is to provide a method for determining the feeding flow rate according to the batch feeding amount, to establish a model for tobacco leaves of different specifications and grades, to predict their weight after ultra-loosening and watering, and to add up the accumulated weight at the inlet of the leaf moistening and feeding device, and to convert the batch feeding index into the flow feeding index accordingly, so as to ensure the integrity of the cigarette formula and to accurately and evenly apply the feed liquid, thereby stably improving the intrinsic quality of the cigarette.

[0006] A method for determining a feed flow rate according to a batch feed amount of the present invention, wherein:

[0007] S1. Before the super-return loosening process, obtain the basic information of the current batch of tobacco leaves: dry cigarette package weight, historical data of cigarette package water absorption coefficient, historical moisture of each cigarette package at the super-return outlet, moisture of the wet cigarette package before adding water, and the total amount of added material;

[0008] S2. Estimate the weight of each cigarette pack after over-loosening and the total weight of the batch after over-loosening;

[0009]

[0010]

[0011] S3. Calculate the fraction of each cigarette pack in the total weight in the super-loose

[0012]

[0013] S4. Allocate the amount of cigarette pack material according to the weight fraction of the cigarette pack after super-loosening

[0014] Cigarette pack addition amount = total addition amount × cigarette pack weight fraction after super-loosening

[0015] S5. Convert the total amount of tobacco leaves added in the current batch into the amount of flow rate added according to the cigarette pack:

[0016]

[0017] The raw materials for processes such as super-return loosening, leaf moistening, etc. are cigarette packs arranged in sequence, wherein the weight of each cigarette pack is roughly equal, and the difference lies in the different water absorption capacity of tobacco leaves of each cigarette pack. The present invention estimates the weight and cumulative weight of each cigarette pack after the super-return loosening process through the historical data performance of each cigarette pack, and then obtains the flow rate feeding amount of each cigarette pack, so that the quality of each cigarette pack after feeding is more balanced, thereby improving the product quality.

[0018] Preferably, the basic information of tobacco leaves also includes: specification grade, and the corresponding total added amount is obtained according to the specification grade.

[0019] Preferably, the method of determining the feeding flow rate according to the batch feeding amount determines the moisture content of the cigarette pack according to historical data before super-rebound loosening, and S2 predicts the water absorption of the cigarette pack during the super-rebound loosening process based on the historical moisture content of the cigarette pack after super-rebound loosening. After production, the background will self-learn and self-update the historical database based on the data after super-rebound loosening, and more accurately predict the weight change of each cigarette pack during the super-rebound loosening stage under a stable process.

[0020] The method for determining the feeding flow rate according to the batch feeding amount of the present invention converts the batch feeding index into the flow feeding index according to the weight and moisture content before and after ultra-loosening and water addition for tobacco leaves of different specifications and grades, which can not only ensure the integrity of the cigarette formula, but also accurately and evenly apply the feed liquid, thereby stably improving the intrinsic quality of the cigarette. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The schematic diagram of the process of determining the feeding flow rate according to the batch feeding amount of the present invention is DETAILED DESCRIPTION

[0022] In order to clearly describe the present invention, it is now described in further detail with reference to the accompanying drawings.

[0023] like Figure 1 As shown, a method of determining the feeding flow rate according to the batch feeding amount of the present invention, wherein,

[0024] S1. Before the super-return loosening process, obtain the basic information of the current batch of tobacco leaves: dry cigarette package weight, historical data of cigarette package water absorption coefficient, historical moisture of each cigarette package at the super-return outlet, moisture of the wet cigarette package before adding water, and the total amount of added material;

[0025] S2. Estimate the weight of each cigarette pack after over-loosening and the total weight of the batch after over-loosening;

[0026]

[0027]

[0028] S3. Calculate the fraction of each cigarette pack in the total weight in the super-loose

[0029]

[0030] S4. Allocate the amount of cigarette pack material according to the weight fraction of the cigarette pack after super-loosening

[0031] Cigarette pack addition amount = total addition amount × cigarette pack weight fraction after super-loosening

[0032] S5. Convert the total amount of tobacco leaves added in the current batch into the amount of flow rate added according to the cigarette pack:

[0033]

[0034] The raw materials for processes such as super-return loosening, leaf moistening, etc. are cigarette packs arranged in sequence, wherein the weight of each cigarette pack is roughly equal, and the difference lies in the different water absorption capacity of tobacco leaves of each cigarette pack. The present invention estimates the weight and cumulative weight of each cigarette pack after the super-return loosening process through the historical data performance of each cigarette pack, and then obtains the flow rate feeding amount of each cigarette pack, so that the quality of each cigarette pack after feeding is more balanced, thereby improving the product quality.

[0035] The basic information of tobacco leaves in the above method may also include: specification grade, according to which the corresponding total feed amount is obtained; the moisture content of the cigarette pack is determined according to historical data before super-rebound loosening, and the water absorption of the cigarette pack during the super-rebound loosening process is predicted in S2 based on the historical moisture content of the cigarette pack after super-rebound loosening. After production, the background will self-learn and self-update the historical database based on the data after super-rebound loosening, and accurately predict the weight change of each cigarette pack during the super-rebound loosening stage under a stable process.

[0036] In order to illustrate the effect of the above method in detail, a data comparison table of two batches of the same brand is provided.

[0037] Batch feeding method:

[0038]

[0039]

[0040] Method of the present invention

[0041] Weight of cigarette pack before adding water Entrance moisture Export moisture Super loose weight Weight fraction Feeding amount Feed ratio 202 10 17.8 221.167883 0.04622863 7.825 0.03538049 200 12.3 18.8 216.009852 0.0451505 7.6425 0.03538049 205 12.8 17.3 216.154776 0.04518079 7.6477 0.03538049 203 10.6 18.9 223.775586 0.0467737 7.9173 0.03538049 200 11.9 18.9 217.262639 0.04541236 7.6869 0.03538049 201 10.2 19 222.837037 0.04657752 7.8841 0.03538049 202 11.2 16.6 215.079137 0.04495596 7.6096 0.03538049 203 12.1 18.5 218.941104 0.04576319 7.7462 0.03538049 200 11.2 18.2 217.114914 0.04538148 7.6816 0.03538049 203 11 18 220.329268 0.04605334 7.7954 0.03538049 205 12.7 18 218.25 0.04561874 7.7218 0.03538049 202 12 17 214.168675 0.04476565 7.5774 0.03538049 201 10.1 17.3 218.499395 0.04567086 7.7306 0.03538049 203 11.3 17.5 218.255758 0.04561994 7.722 0.03538049 200 10.7 17.5 216.484848 0.04524978 7.6593 0.03538049 203 12.7 17 213.516867 0.04462941 7.5543 0.03538049 202 10 17.1 219.300362 0.04583828 7.759 0.03538049 199 11.4 17.3 213.197098 0.04456257 7.543 0.03538049 203 11.1 18.2 220.619804 0.04611407 7.8056 0.03538049 200 10.8 18.2 218.09291 0.0455859 7.7162 0.03538049 202 12 16.3 212.377539 0.04439127 7.514 0.03538049 203 13 17 212.783133 0.04447605 7.5284 0.03538049

[0042] The method for determining the feeding flow rate according to the batch feeding amount of the present invention converts the batch feeding index into the flow feeding index according to the weight and moisture content before and after ultra-loosening and water addition for tobacco leaves of different specifications and grades, which can not only ensure the integrity of the cigarette formula, but also accurately and evenly apply the feed liquid, thereby stably improving the intrinsic quality of the cigarette.

Claims

1. A method for determining a feed flow rate according to a batch feed amount, characterized in that: Includes steps: S1. Before the super-return loosening process, obtain the basic information of the current batch of tobacco leaves: dry tobacco package weight, historical moisture content of tobacco packages after super-return loosening, moisture content of dry tobacco packages and total added amount; S2. Estimate the weight of each cigarette pack after over-loosening and the total weight of the batch after over-loosening; S3. Calculate the fraction of each cigarette pack in the total weight in the super-loose S4. Allocate the amount of cigarette pack material according to the weight fraction of the cigarette pack after super-loosening Cigarette pack addition amount = total addition amount × cigarette pack weight fraction after super-loosening S5. Convert the total amount of tobacco leaves added in the current batch into a feed flow rate for each cigarette pack: The basic information of tobacco leaves also includes: specification grade, and the corresponding total addition amount is obtained according to the specification grade; The super-return loosening process determines the weight and moisture content of the dry cigarette pack according to the detection equipment. S2 predicts the weight change of the cigarette pack during the super-return loosening process based on the historical moisture content of the cigarette pack after super-return loosening.

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