Method for controlling moisture content of tobacco material of loosening and dampening machine and loosening and dampening machine

Abstract

The invention discloses a method for controlling the moisture content of tobacco materials of a loosening and dampening machine. The method comprises the steps that the standard moisture value and the actual outlet moisture value of the processed tobacco materials are obtained; obtaining a tobacco material moisture deviation value according to the standard moisture value and the actual outlet moisture value; obtaining a preset threshold value, obtaining a water adding model of the processed tobacco materials according to the fact that the tobacco material moisture deviation value exceeds the preset threshold value, and obtaining a water adding correction coefficient based on the tobacco material moisture deviation value and the water adding model; wherein the water adding model is a model which is obtained based on the water adding amount of a plurality of tobacco material samples of the same type as the processed tobacco material and the corresponding water increment and is used for adjusting the water adding coefficient; and updating the water adding coefficient of the processed tobacco material according to the water adding correction coefficient. The device can realize automatic adjustment of the loosening and moisture regaining water adding amount, does not need manual intervention, and is rapid in adjustment and high in adjustment accuracy. The invention further provides the loosening and dampening machine.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco material production, in particular to a method for controlling the moisture content of tobacco materials in a loosening and rehumidifying machine and a loosening and rehumidifying machine. Background Art

[0002] The existing loose rehumidification machine adopts an open-loop automatic control mode when adding water to the tobacco material to humidify it. This control mode adopts a fixed water addition mode.

[0003] Since the actual moisture content of the same type of tobacco materials is not a fixed value, the fixed water addition mode will cause the outlet moisture content of the same type of tobacco materials to fluctuate greatly. Since there are standard requirements for the outlet moisture content of loose rehumidification, in order to ensure the stability of the outlet moisture content during the production process, the staff needs to manually adjust the water addition amount continuously. However, since the actual moisture content of the incoming materials is a dynamic fluctuation process, and this model is pre-watered, the manual adjustment of the water addition method has the problem of adjustment lag and inaccuracy, which not only causes the water addition amount of the tobacco materials to not meet the standard requirements, but also increases the workload of the staff. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problems of manual adjustment of water addition amount in the existing loosening and rehumidifying machine, such as adjustment lag and inaccurate adjustment. The present invention provides a method for controlling the moisture content of tobacco materials in a loosening and rehumidifying machine and a loosening and rehumidifying machine, which can realize automatic adjustment of the water addition amount in the loosening and rehumidifying machine without manual intervention, and the adjustment is fast and accurate.

[0005] The embodiment of the present invention further provides a method for controlling the moisture content of tobacco materials in a loose rehumidification machine, comprising:

[0006] Obtain the standard moisture value and actual outlet moisture value of processed tobacco materials;

[0007] Obtain the moisture deviation value of tobacco material according to the standard moisture value and the actual outlet moisture value;

[0008] Obtain a preset threshold value, obtain a water-adding model of the processed tobacco material according to the tobacco material moisture deviation value exceeding the preset threshold value, and obtain a water-adding correction coefficient based on the tobacco material moisture deviation value and the water-adding model; wherein the water-adding model is a model for adjusting the water-adding coefficient, which is obtained based on the water-adding amount of multiple tobacco material samples of the same type as the processed tobacco material and the corresponding moisture increase amount;

[0009] Update the water addition coefficient of the processed tobacco material according to the water addition correction coefficient.

[0010] Optionally, the steps for building the water-addition model include:

[0011] Acquire multiple tobacco materials of the same type as multiple tobacco material samples, and obtain the amount of water added and the amount of water increase of each tobacco material sample;

[0012] The water addition amount and moisture increase amount of multiple tobacco material samples were linearly fitted to obtain the water addition equation and construct the water addition model.

[0013] Optionally, the method for obtaining the tobacco material sample further includes:

[0014] Dividing the tobacco material into multiple tobacco material modules according to preset rules;

[0015] Get the moisture value of each smoke material module:

[0016] Arrange the moisture values ​​of the incoming materials from large to small, and remove 20% of the smoke material modules in order from large to small and from small to large;

[0017] The remaining tobacco material modules are used as tobacco material samples.

[0018] Optionally, the moisture value of the incoming material is obtained by a moisture meter installed at the entrance of the loosening and rehumidifying machine;

[0019] The actual outlet moisture value is obtained through a moisture meter installed at the outlet of the loosening and rehumidifying machine.

[0020] Optionally, before the step of obtaining the standard moisture value and the actual outlet moisture value of the processed tobacco material, the step further includes:

[0021] The time t1 for collecting and processing tobacco materials from the entrance of the loosening and rehumidifying machine to the water adding nozzle of the loosening and rehumidifying machine;

[0022] The time t2 for collecting and processing tobacco materials from the water adding nozzle to the outlet of the loosening and rehumidifying machine;

[0023] The stack delay method is used to align the data movement detected at the inlet, water adding nozzle and outlet of the processed tobacco material loosening and rehumidifying machine.

[0024] Optionally, the calculation formula for the moisture deviation of the smoke material is: ΔY n =Y 标 -Y n出 , where ΔY n Y is the moisture deviation value of tobacco material, 标 is the standard moisture value, Y n出 is the actual outlet moisture value.

[0025] Optionally, the water addition model is: ΔX n =(ΔY n -b n ) / a n , where a n ,b n is the water addition model coefficient, and ΔXn is the water addition correction coefficient.

[0026] Optional, water addition factor: X' n=X n +ΔX n , where X' n For the next batch of processed tobacco materials of the same type, X n This batch of tobacco materials is of the same type of processed tobacco materials.

[0027] An embodiment of the present invention further provides a loosening and rehumidifying machine, comprising a feeding trough and an automatic water adding system, wherein the automatic water adding system is regulated by the method for controlling the moisture content of tobacco materials of the loosening and rehumidifying machine described in the above specification.

[0028] Optionally, it also includes a steam component, which is arranged at the inlet of the feeding trough and is used to increase the temperature and humidify the processed tobacco material;

[0029] The steam pipeline of the steam component is provided with a solenoid valve, which is used to control the on-off of the steam pipeline.

[0030] The beneficial effects of the present invention are as follows: by providing a method for controlling the moisture content of tobacco materials in a loose rehumidification machine, the amount of water added in the loose rehumidification machine can be automatically adjusted without manual intervention, and the adjustment is fast and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A flow chart showing the method for controlling the moisture content of tobacco materials in a loose rehumidification machine of the present invention;

[0032] Figure 2 A schematic diagram showing the alignment of the inlet moisture data, outlet moisture data and water addition amount data of the processed tobacco material of the present invention using stack delay data. DETAILED DESCRIPTION

[0033] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0034] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0035] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Reference Figure 1 The present invention provides a method for controlling the moisture content of tobacco materials in a loose rehumidification machine, comprising:

[0037] Obtain the standard moisture value and actual outlet moisture value of the processed tobacco materials. The standard moisture value of each processed tobacco material is different. Before adjusting the moisture of the tobacco materials, it is necessary to obtain the standard moisture value of the tobacco materials to be processed on the current production line in advance. At the same time, it is also necessary to obtain the actual outlet moisture value of the tobacco materials to be processed on the current production line under the current water addition coefficient, which is used to adjust the water addition coefficient that needs to be adjusted for subsequent production lines when facing the same type of processed tobacco materials.

[0038] The smoke material moisture deviation value is obtained according to the standard moisture value and the actual outlet moisture value. The smoke material moisture deviation value can be obtained by subtracting the standard moisture value from the actual outlet moisture value. That is, the smoke material moisture deviation value can be positive or negative.

[0039] Obtain a preset threshold value, obtain a water-adding model of the processed tobacco material according to the tobacco material moisture deviation value exceeding the preset threshold value, and obtain a water-adding correction coefficient based on the tobacco material moisture deviation value and the water-adding model; wherein the water-adding model is a model for adjusting the water-adding coefficient, which is obtained based on the water-adding amount of multiple tobacco material samples of the same type as the processed tobacco material and the corresponding moisture increase amount;

[0040] Update the water addition coefficient of the processed tobacco material according to the water addition correction coefficient.

[0041] The system is pre-set with a preset threshold value, and the smoke material moisture deviation value is matched with the preset threshold value. If the smoke material moisture deviation value is within the preset threshold range, it means that the amount of water added on the current production line meets the amount of water added required for the current processing of the smoke material, and no excessive adjustment is required; if the smoke material moisture deviation value is not within the preset threshold range, it means that the amount of water added on the current production line does not meet the amount of water added required for the current processing of the smoke material, and adjustment is required. When the system detects that the smoke material moisture deviation value of the processed smoke material on the current production line exceeds the preset threshold, it is necessary to obtain the water addition model of the processed smoke material, substitute the smoke material moisture deviation value into the water addition model, obtain the water addition correction coefficient, add the water addition correction coefficient to the original water addition coefficient of the production line, obtain the corrected water addition adjustment coefficient, and then use the adjusted water addition coefficient to adjust the water addition of the subsequent processed smoke material of the same type. The moisture value of the incoming material is obtained through the moisture meter set at the inlet of the loosening and dehumidifying machine; the actual outlet moisture value is obtained through the moisture meter set at the outlet of the loosening and dehumidifying machine.

[0042] Among them, the water addition model is to obtain multiple tobacco materials of the same type as multiple tobacco material samples, obtain and obtain the amount of water added and the amount of moisture added of each tobacco material sample; the amount of water added and the amount of moisture added of each tobacco material sample are used as a set of data respectively, and these data are run on the MYSQL database and python programming language. The MYSQL database is used as the database of historical batch data, and the python programming language and its rich and powerful library functions are used to import data. Through linear fitting, the water addition equation is obtained to build the water addition model.

[0043] In an practicable embodiment, the method for obtaining a tobacco material sample further comprises:

[0044] Dividing the tobacco material into multiple tobacco material modules according to preset rules;

[0045] Get the moisture value of each smoke material module:

[0046] Arrange the moisture values ​​of the incoming materials from large to small, and remove 20% of the smoke material modules in order from large to small and from small to large;

[0047] The remaining tobacco material modules are used as tobacco material samples.

[0048] In this embodiment, in order to prevent the large errors between the obtained tobacco samples, the applicant found through data research that the abnormal data rate of outlet moisture and water addition is less than 2%. The inlet moisture will be low due to the gaps between the processed tobacco materials. The moisture value measured when the gaps pass through the moisture meter will be low. The moisture will also change on the sides before and after the processed tobacco materials because the surface is susceptible to environmental influences. By statistically analyzing historical data, the maximum inlet moisture abnormality rate can reach 35%. In order to facilitate the statistics of data of various types of tobacco materials, 50KG is used as a module for calculation. According to the flow rate of 3500kg / h of the loose rehumidifier, there are about 51 data for every 50kg of tobacco leaves. For the convenience of calculation, 50 data are taken for each module. The data is sorted, and the 20% largest data and the 20% smallest data are eliminated. The remaining 60% of the data are used as tobacco samples.

[0049] Reference Figure 2 In an practicable embodiment, before the step of obtaining the standard moisture value and the actual outlet moisture value of the processed tobacco material, the method includes:

[0050] The time t1 for collecting and processing tobacco materials from the entrance of the loosening and rehumidifying machine to the water adding nozzle of the loosening and rehumidifying machine;

[0051] The time t2 for collecting and processing tobacco materials from the water adding nozzle to the outlet of the loosening and rehumidifying machine;

[0052] The stack delay method is used to align the data movement detected at the inlet, water adding nozzle and outlet of the processed tobacco material loosening and rehumidifying machine.

[0053] In this embodiment, there is a certain time difference from the inlet moisture meter to the water adding nozzle, and from the water adding nozzle to the outlet moisture meter. These data need to be moved and aligned to ensure that these data correspond to the data of the same processed tobacco material during calculation. By using the marker test method, the time t1 of the processed tobacco material from the inlet of the loose rehumidification machine to the water adding nozzle of the loose rehumidification machine is collected; the time t2 from the water adding nozzle of the loose rehumidification machine to the outlet of the loose rehumidification machine is collected; in the PLC system, the stack delay method is used to move and align the data detected at the inlet, water adding nozzle and outlet of the processed tobacco material, and then the water addition amount from the inlet moisture meter to the water adding nozzle and the actual outlet moisture value at the outlet moisture meter of the same processed tobacco material are obtained.

[0054] Specifically, by using the marker test method, the team measured that the material passing time from the inlet moisture meter to the outlet moisture meter was 192 seconds, and the delay from the water nozzle to the outlet moisture meter was 140 seconds. The data was aligned in the PLC system by using the stack delay method.

[0055] In an practicable embodiment, the calculation formula of the moisture deviation value of the tobacco material is: ΔY n =Y 标 -Y n出 , where ΔY n is the moisture deviation value of the tobacco material, Y is the standard moisture value, and Yn is the actual outlet moisture value.

[0056] The water addition model is: ΔX n =(ΔY n -b n ) / a n , where a n ,b n is the water addition model coefficient, ΔX n is the water addition correction factor.

[0057] Water addition coefficient: X' n =X n +ΔX n , where X' n For the next batch of processed tobacco materials of the same type, X n This batch of tobacco materials is of the same type of processed tobacco materials.

[0058] The moisture deviation value ΔY is obtained by the equation for obtaining the moisture deviation value of the smoke material n , according to the water addition model ΔX n =(ΔY n -b n) / a n , where a n ,b n is the water-adding model coefficient, which can be obtained by linear fitting multiple tobacco samples of the same type, and ΔY n Substituting into the water addition model, we can get ΔX n , that is, water addition correction coefficient. After obtaining the water addition correction coefficient, add the water addition correction coefficient to the current water addition coefficient of the current production line to obtain the adjusted water addition coefficient of the processed tobacco material. When the system recognizes that the next batch of tobacco materials is the same type of tobacco materials as the current tobacco materials, the water addition coefficient of the adjusted processed tobacco materials is used to add water to the next batch of tobacco materials.

[0059] An embodiment of the present invention also provides a loosening and rehumidifying machine for mechanically loosening tobacco materials to increase the temperature and moisture content of the tobacco materials, including a feeding trough and an automatic watering system. The automatic watering system is regulated by the moisture content control method of the tobacco materials of the loosening and rehumidifying machine described in the above-mentioned specification.

[0060] In an practicable embodiment, a steam component is further included, which is arranged at the inlet of the feeding chute and is used to increase the temperature and humidify the processed tobacco material;

[0061] The steam pipeline of the steam component is provided with a solenoid valve, which is used to control the on-off of the steam pipeline.

[0062] In this embodiment, the process of the loosening and moistening machine for loosening and warming and humidifying the tobacco slices is as follows: steam is applied from the inlet of the loosening and moistening machine to the cylinder, and hot air is added in the process to loosen and warm and humidify the tobacco slices to improve the processing performance of the tobacco slices. The installation position of the steam nozzle of the loosening and moistening machine is generally high, and the direction of the steam pipeline is to transport upward from the control cabinet on the ground. However, when the loosening and moistening machine is shut down on a daily basis, the steam in the steam pipeline will condense into water; because the pipeline temperature will gradually drop to room temperature when it is shut down, when the loosening and moistening machine restarts production, the high-temperature steam will also form condensed water when it encounters the cold steam pipeline, which will result in a large amount of condensed water at the beginning of production. During the production process, a large amount of condensed water will be applied to the tobacco slices, resulting in too high moisture content in the processed tobacco material of the material head, and even wet tobacco, which seriously affects the product quality of the tobacco slices. Therefore, by modifying the pipeline system, the condensed water in the loosening and moistening process steam pipeline is removed by solenoid valve control before starting the machine to prevent the abnormal data of the material head from affecting the operation of the automatic water adding system.

[0063] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A method for controlling the moisture content of tobacco materials in a loose rehumidification machine, characterized in that: include: Obtain the standard moisture value and actual outlet moisture value of processed tobacco materials; Obtaining a tobacco material moisture deviation value according to the standard moisture value and the actual outlet moisture value; Obtaining a preset threshold, obtaining a water-adding model of the processed tobacco material according to the tobacco material moisture deviation value exceeding the preset threshold, and obtaining a water-adding correction coefficient based on the tobacco material moisture deviation value and the water-adding model; wherein the water-adding model is a model for adjusting the water-adding coefficient, which is obtained based on the water-adding amounts of a plurality of tobacco material samples of the same type as the processed tobacco material and the corresponding moisture increases; The water addition coefficient of the processed tobacco material is updated according to the water addition correction coefficient.

2. The method for controlling the moisture content of smoke material in a loose rehumidification machine according to claim 1, characterized in that: The steps of constructing the water addition model include: Acquire a plurality of tobacco materials of the same type as a plurality of tobacco material samples, and acquire the amount of water added and the amount of water increase of each of the tobacco material samples; The water addition model is constructed by performing linear fitting on the water addition amount and the moisture increase amount of a plurality of the tobacco material samples.

3. The method for controlling the moisture content of smoke material in a loose rehumidification machine according to claim 2, characterized in that: The method for obtaining the tobacco material sample also includes: Dividing the tobacco material into multiple tobacco material modules according to preset rules; Obtain the moisture value of the incoming material of each of the cigarette material modules: Arrange the moisture values ​​of the incoming materials in order from large to small, and remove 20% of the smoke material modules in order from large to small and from small to large; The remaining tobacco material modules are used as tobacco material samples.

4. The method for controlling the moisture content of smoke material in a loose rehumidification machine according to claim 3, characterized in that: The moisture value of the incoming material is obtained by a moisture meter arranged at the entrance of the loosening and rehumidifying machine; The actual outlet moisture value is obtained by a moisture meter arranged at the outlet of the loosening and rehumidifying machine.

5. The method for controlling the moisture content of smoke material in a loose rehumidification machine according to claim 1, characterized in that: Before the step of obtaining the standard moisture value and the actual outlet moisture value of the processed tobacco material, the method further includes: The time t1 of collecting the processed tobacco material from the inlet of the loosening and rehumidifying machine to the water adding nozzle of the loosening and rehumidifying machine; The time t2 for collecting the processed tobacco material from the water adding nozzle to the outlet of the loosening and rehumidifying machine; The stack delay method is used to align the movement of the data detected at the inlet, water adding nozzle and outlet of the processed tobacco material.

6. The method for controlling the moisture content of loose rehumidifying machine tobacco material according to claim 1, characterized in that: The calculation formula of the moisture deviation value of the tobacco material is: ΔY n =Y 标 -Y n出 , where ΔY n Y is the moisture deviation value of tobacco material, 标 is the standard moisture value, Y n出 is the actual outlet moisture value.

7. The method for controlling the moisture content of smoke material in a loose rehumidification machine according to claim 6, characterized in that: The water addition model is: ΔX n =(ΔY n -b n ) / a n , where a n ,b n is the water addition model coefficient, ΔX n is the water addition correction factor.

8. The method for controlling the moisture content of smoke material in a loose rehumidification machine according to claim 7, characterized in that: The water addition coefficient is: X' n =X n +ΔX n , where X' n For the next batch of processed tobacco materials of the same type, X n This batch of tobacco materials is of the same type as the processed tobacco materials.

9. A loosening and rehumidifying machine, characterized in that: It comprises a feeding trough and an automatic water adding system, wherein the automatic water adding system uses the method for controlling the moisture content of tobacco materials in a loose rehumidification machine as described in any one of claims 1 to 8 to add water to the tobacco materials in the feeding trough.

10. The loosening and rehumidifying machine according to claim 9, characterized in that: It also includes a steam component, which is arranged at the inlet of the feeding trough and is used to increase the temperature and humidify the processed tobacco material; The steam pipeline of the steam component is provided with a solenoid valve, and the solenoid valve is used to control the on-off of the steam pipeline.

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