Method for controlling pressure in a tobacco flavouring drum

Abstract

The present application provides a kind of tobacco flavoring drum equipment internal pressure control method, comprising: obtaining the data of flavoring drum equipment internal pressure, material flow, spice atomization compressed air pressure, moisture exhaust damper opening degree, and rejecting the outliers in the obtained data, with material flow, spice atomization compressed air pressure, moisture exhaust damper opening degree as input, with equipment internal pressure as response, regression analysis is carried out, to obtain the regression model of flavoring drum equipment internal pressure, compare the actual value of flavoring drum equipment internal pressure with the optimal value, if the actual value does not meet the optimal value requirement, then according to the regression model of flavoring drum equipment internal pressure, the moisture exhaust damper opening degree corresponding to the optimal value of flavoring drum equipment internal pressure is obtained, and the moisture exhaust damper opening degree is adjusted through feedback control, so that the flavoring drum equipment internal pressure meets the optimal value requirement, if the moisture exhaust damper opening degree exceeds the required value, alarm prompt and other steps are carried out, so that the flavoring drum equipment internal pressure is stable, and the stability of tobacco flavoring quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressure control in a tobacco flavoring drum device, and particularly relates to a method for controlling pressure in a tobacco flavoring drum device. BACKGROUND

[0002] The flavoring process is an important link in tobacco processing, which mainly sprays a certain amount of flavoring on tobacco to enhance the aroma of cigarettes. The liquid flavoring is atomized by a double-medium nozzle under the action of compressed air and then applied to the tobacco. In order to reduce the retention of water vapor in the flavoring drum and ensure that the flavoring drum remains relatively dry, the flavoring equipment is provided with a moisture removal system.

[0003] The pressure in the tobacco flavoring drum device is determined by the tobacco flow, flavoring atomization pressure, and moisture removal system. At present, there is a lack of detection and control devices for the pressure in the tobacco flavoring drum, and the size of the internal pressure affects the loss of atomized flavoring. Unreasonable air pressure may cause abnormal adhesion of materials in the moisture removal pipeline and the moisture removal screen. SUMMARY

[0004] The embodiment of the present application provides a method for controlling the pressure in a tobacco flavoring drum device, which uses experimental design and parameter modeling to obtain a relationship model between the pressure in the tobacco flavoring drum device and the opening degree of the moisture removal damper. According to the feedback model output of the optimal pressure value, the opening degree of the moisture removal damper is adjusted to ensure that the pressure is always in the optimal state.

[0005] In view of the above problems, the technical solution provided by the present application is:

[0006] A method for controlling the pressure in a tobacco flavoring drum device, comprising the following steps:

[0007] Obtain the data of the pressure in the flavoring drum device, the material flow, the flavoring atomization compressed air pressure, and the opening degree of the moisture removal damper, and eliminate the outliers in the obtained data;

[0008] Take the material flow, the flavoring atomization compressed air pressure, and the opening degree of the moisture removal damper as inputs, and take the pressure in the device as a response, perform regression analysis, and obtain a regression model of the pressure in the flavoring drum device;

[0009] Compare the actual value of the pressure in the flavoring drum device with the optimal value, if the actual value does not meet the optimal value requirement, then according to the regression model of the pressure in the flavoring drum device, the opening degree of the moisture removal damper corresponding to the optimal value of the pressure in the flavoring drum device is obtained;

[0010] Through feedback control, the opening degree of the moisture removal damper is adjusted so that the pressure in the flavoring drum device meets the optimal value requirement, and if the opening degree of the moisture removal damper exceeds the required value, an alarm is given.

[0011] As a preferred technical scheme of the present application, the process of eliminating abnormal values in the obtained data is as follows: the obtained data of the pressure in the tobacco flavoring drum device, the material flow, the flavoring atomization compressed air pressure and the moisture exhaust damper opening degree are sequentially put into a table, and the obviously abnormal data is eliminated.

[0012] As a preferred technical scheme of the present application, the obviously abnormal data refers to the data whose difference from the average value of the pressure in the tobacco flavoring drum device, the material flow, the flavoring atomization compressed air pressure and the moisture exhaust damper opening degree is more than 20% of the average value.

[0013] As a preferred technical scheme of the present application, the regression analysis specifically includes: taking the same material flow and flavoring atomization compressed air pressure as different groups, taking the moisture exhaust damper opening degree as a variable and the pressure in the tobacco flavoring drum device as an output, performing scatter plot analysis, selecting a monomial multiple equation regression simulation, and determining the regression model according to the simulation effect.

[0014] As a preferred technical scheme of the present application, the actual value of the pressure in the tobacco flavoring drum device is a real-time monitored number by a pressure detection device, and the optimal value is a target range value of the pressure in the tobacco flavoring drum device selected according to production requirements.

[0015] As a preferred technical scheme of the present application, the feedback control is a feedback adjustment of the damper opening degree according to a PID adjustment mechanism.

[0016] As a preferred technical scheme of the present application, the required value of the moisture exhaust damper opening degree is not more than 20% of the average value of the moisture exhaust damper opening degree of each group.

[0017] Compared with the prior art, the present application has the following beneficial effects: the tobacco cut filler flavoring drum device pressure control method fills the gap of no real-time monitoring of the pressure in the tobacco cut filler flavoring drum device, uses the regression model of the pressure in the tobacco cut filler flavoring drum device and the moisture exhaust damper opening degree to establish the corresponding relationship between them, automatically adjusts the moisture exhaust damper opening degree when the pressure in the tobacco cut filler flavoring drum device does not meet the optimal value, timely warns the abnormal situation of the moisture exhaust system pipeline, ensures the stability of the pressure in the tobacco cut filler flavoring drum device, ensures the stability of the tobacco processing environment, reduces the loss of unreasonable discharge of flavoring, and greatly improves the stability of the tobacco cut filler flavoring quality.

[0018] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1A flowchart of a tobacco flavoring drum equipment internal pressure control method disclosed by the embodiment of the present application is shown in the figure;

[0020] Figure 2 A flowchart of step Y2 of a tobacco flavoring drum equipment internal pressure control method disclosed by the embodiment of the present application is shown in the figure;

[0021] Figure 3 A scatter plot of step Y22 disclosed by the embodiment of the present application is shown in the figure;

[0022] Figure 4 A regression model of step Y24 disclosed by the embodiment of the present application is shown in the figure. Specific embodiments

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely in the figures of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0024] As shown in the figure, a tobacco flavoring drum equipment internal pressure control method comprises the following steps: Figures 1-4

[0025] Y1, collecting data of the internal pressure of the flavoring drum equipment, the material flow, the flavoring atomization compressed air pressure, and the moisture exhaust damper opening degree;

[0026] Specifically, the internal pressure of the flavoring drum equipment is measured by a differential pressure transmitter installed in the equipment, and the material flow, the flavoring atomization compressed air pressure, and the moisture exhaust damper opening degree are collected by the equipment control system.

[0027] Y2, dividing groups according to the same material flow and flavoring atomization compressed air pressure, and performing regression modeling on the data of the internal pressure of the flavoring drum equipment and the moisture exhaust damper opening degree in the groups;

[0028] Specifically, it comprises:

[0029] Y21, dividing different groups according to different material flows and flavoring atomization compressed air pressures;

[0030] It should be noted that the same material flow and flavoring atomization compressed air pressure represent the production requirements of the same cigarette brand, so different groups represent different cigarette brands.

[0031] Y22, drawing a scatter plot of the internal pressure of the drum equipment and the moisture exhaust damper opening degree in different groups;

[0032] Y23, determining the power number of the variable of the relationship equation between the internal pressure of the drum equipment and the moisture exhaust damper opening degree according to the scatter plot;

[0033] ​Y24, regression equation of simulating the pressure in the tobacco flavoring drum equipment and the opening of the moisture exhaust damper, and determining the regression model according to the fitting of the equation.

[0034] Y3, judging whether the actual value of the pressure in the tobacco flavoring drum equipment meets the optimal value, wherein if not, the next step is performed;

[0035] if yes, no adjustment is needed;

[0036] Y4, obtaining the opening of the moisture exhaust damper corresponding to the optimal value of the pressure in the tobacco flavoring drum equipment according to the regression model;

[0037] Y5, adjusting the opening of the moisture exhaust damper so that the pressure in the tobacco flavoring drum equipment meets the optimal value;

[0038] It should be noted that the optimal value is a target range value of the pressure in the tobacco flavoring drum equipment selected according to production requirements.

[0039] Y6, judging whether the opening of the moisture exhaust damper meets the required value.

[0040] It should be noted that the required value of the opening of the moisture exhaust damper is not more than 20% of the average value of the openings of the moisture exhaust dampers in each zone group.

[0041] The tobacco flavoring drum equipment pressure control method can automatically adjust the opening of the moisture exhaust damper when the pressure in the tobacco flavoring drum equipment does not meet the optimal value, timely warn the abnormal situation of the moisture exhaust system pipeline, ensure the stability of the pressure in the tobacco flavoring drum equipment, ensure the stability of the tobacco processing environment, reduce the loss of unreasonable discharge of flavorings, and greatly improve the stability of the tobacco flavoring quality.

[0042] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and equivalent technologies thereof, the present application also intends to include these modifications and variations.

Claims

1. A method for controlling the internal pressure of a tobacco flavoring drum device, characterized in that, Includes the following steps: Acquire data on the pressure inside the fragrance roller equipment, material flow rate, fragrance atomization compressed air pressure, and exhaust damper opening, and remove outliers from the acquired data; Using material flow rate, fragrance atomization compressed air pressure, and exhaust damper opening as inputs, and equipment internal pressure as the response, regression analysis was performed to obtain a regression model of the internal pressure of the fragrance roller equipment. The steps to obtain a regression model include: Different zones are divided according to the different material flow rates and fragrance atomization compressed air pressures; Draw a scatter plot of the pressure inside the drum equipment and the opening of the exhaust damper in different zones; Determine the power of the variable in the equation relating the pressure inside the drum equipment to the opening of the exhaust damper based on the scatter plot. The regression equation for the pressure inside the simulated drum equipment and the opening of the exhaust damper is used to determine the regression model based on the fit of the equation. Compare the actual pressure value inside the aroma-adding roller equipment with the optimal value. If the actual value does not meet the requirements of the optimal value, then according to the regression model of the pressure inside the aroma-adding roller equipment, the opening of the dehumidification damper corresponding to the optimal pressure inside the aroma-adding roller equipment is obtained. The opening of the exhaust damper is adjusted through feedback control to ensure that the pressure inside the fragrance roller equipment meets the optimal value requirement. If the opening of the exhaust damper exceeds the required value, an alarm will be triggered. The required opening value of the exhaust damper shall not exceed 20% of the average opening value of the exhaust damper in each zone group; The actual pressure inside the aroma-adding roller equipment is a digital value monitored in real time using a pressure detection device, while the optimal value is the target range of pressure inside the aroma-adding roller equipment selected according to production requirements.

2. The method for controlling the internal pressure of a tobacco flavoring drum device according to claim 1, characterized in that: The process of removing outliers from the acquired data is as follows: the acquired data on pressure inside the aroma-adding roller equipment, material flow rate, aroma atomization compressed air pressure, and exhaust damper opening are sequentially placed into a table, and obviously abnormal data are removed.

3. The method for controlling the internal pressure of a tobacco flavoring drum device according to claim 2, characterized in that: Significantly abnormal data refers to data whose difference from the average values ​​of pressure, material flow, fragrance atomization compressed air pressure, and exhaust damper opening in the fragrance roller equipment exceeds 20% of the average value.

4. The method for controlling the internal pressure of a tobacco flavoring drum device according to claim 1, characterized in that: The regression analysis specifically includes: dividing the material flow rate and the compressed air pressure for fragrance atomization into different groups; using the opening of the exhaust damper as a variable and the pressure inside the fragrance roller equipment as the output within each group; performing scatter plot analysis; selecting a univariate polynomial equation for regression simulation; and determining the regression model based on the simulation results.

5. The method for controlling the internal pressure of a tobacco flavoring drum device according to claim 1, characterized in that: Feedback control uses a PID control mechanism to adjust the damper opening based on feedback.

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