Tobacco slurry uniformity control system and method

Abstract

The invention discloses a tobacco slurry uniformity control system and method.The tobacco slurry uniformity control system comprises a monitoring module and a control module which are connected, and the monitoring module is used for detecting the performance of slurry entering a buffer tank front and back and feeding back obtained data to the control module; the control module is connected with the monitoring module, controls the stirring operation of the defibrating tank or / and the preparation tank, and is used for receiving the data collected by the monitoring module, judging the mixing uniformity of the slurry entering the buffer tank from front to back according to the data, and adjusting the stirring speed or / and the stirring time of the defibrating tank or / and the preparation tank when a non-uniform phenomenon exists. According to the tobacco slurry uniformity control system and method provided by the invention, online monitoring and control of the tobacco slurry can be realized, and the strength, the processing performance and the sensory quality of the sheet are improved.

Description

Technical Field

[0001] The present application relates to the technical field of tobacco processing, and in particular to a tobacco slurry uniformity control system and method. Background Art

[0002] Heat-not-burn cigarettes, also known as heated cigarettes, as a new type of harm-reducing tobacco products, have been gradually accepted by more and more tobacco consumers under the leadership of tobacco giants, and some products have occupied a certain market share. Some institutions predict that the market size will continue to expand in the future, and by 2025, it will replace 30% of the market share of foreign traditional cigarette industry.

[0003] Heated cigarettes generate aerosols and release flavor substances through heating and distillation, which can meet the physiological needs of consumers to a certain extent. Compared with traditional cigarettes, heated cigarettes have significant differences in smoking methods, smoking media and aerosol components. The types of main chemical components are reduced, the release amount is also decreasing, and the potential harmful substances are reduced by an average of 90%.

[0004] At present, the mainstream heated cigarette smoking medium is tobacco flakes. Different from the flakes used in traditional cigarettes, heated cigarette tobacco flakes are an important source of nicotine and aroma, and the quality requirements for flakes are very high. The slurry uniformity in the flake production process has a great influence on the flake strength, processing performance and sensory quality. Whether it is thick slurry flakes or roller-pressed flakes, the slurry uniformity is controlled by offline testing + manual intervention mode, which has a certain lag and cannot ensure the control effect. At present, there is no online monitoring and control system for slurry uniformity. Summary of the invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide a tobacco slurry uniformity control system and method that can realize online monitoring and control of tobacco slurry.

[0006] The technical solution provided by the present invention is as follows: A tobacco slurry uniformity control system comprises a monitoring module and a control module which are connected to each other. The monitoring module is used to detect the performance of the slurry entering the buffer tank from front to back and feed back the acquired data to the control module. The control module is connected to the monitoring module and controls the stirring operation of the defibrator tank and / or the preparation tank. The control module is used to receive the data collected by the monitoring module and judge the mixing uniformity of the slurry entering the buffer tank from front to back based on the data. When there is unevenness, the stirring speed and / or stirring time of the defibrator tank and / or the preparation tank are adjusted.

[0007] Preferably, the performance detected by the monitoring module is the conductive performance, and the data obtained is the conductivity value or the current value, and the mixing uniformity of the slurries entering before and after is judged by detecting the change in conductivity or current between two points on different slurry planes in the cache tank; or the performance detected by the monitoring module is the optical performance, and the data obtained is the light refractive index or reflectivity, and the mixing uniformity of the slurries entering before and after is judged by detecting the change in light refractive index or reflectivity between two points on different slurry planes in the cache tank.

[0008] Preferably, judging the mixing uniformity of the slurries entering the cache tank front and back based on the data collected by the monitoring module includes: calculating the numerical deviation of the data of the slurries entering front and back adjacently, and if the numerical deviation exceeds the set difference, it is considered that the slurry mixing is uneven.

[0009] Preferably, the control module is connected to the defibrillation tank and the preparation tank at the same time, and is used to selectively control the stirring operation of the defibrillation tank or the preparation tank according to different uniformity conditions.

[0010] A method for controlling tobacco slurry uniformity comprises: adding materials into a defibration tank for defibration, quantitatively injecting defibration liquid into a preparation tank, adding powdered raw materials for solid-liquid mixing to prepare slurry which is injected into a buffer tank, using a monitoring module to detect the performance of slurries entering the buffer tank from front to back, and feeding back the obtained data to a control module; using a control module to receive data collected by a monitoring module, and judging the mixing uniformity of the slurries entering the buffer tank from front to back based on the data, and when unevenness exists, adjusting the stirring speed and / or stirring time of the defibration tank and / or the preparation tank.

[0011] Preferably, the performance detected by the monitoring module is the conductive performance, and the data obtained is the light refractive index or reflectivity, and the mixing uniformity of the slurries entering before and after is judged by detecting the change in the light refractive index or reflectivity between two points on different slurry planes in the cache tank; or the performance detected by the monitoring module is the optical performance, and the data obtained is the conductivity value or the current value, and the mixing uniformity of the slurries entering before and after is judged by detecting the change in the conductivity or current between two points on different slurry planes in the cache tank.

[0012] Preferably, judging the mixing uniformity of the slurries entering the cache tank front and back based on the data collected by the monitoring module includes: calculating the numerical deviation of the data of the slurries entering front and back adjacently, and if the numerical deviation exceeds the set difference, it is considered that the slurry mixing is uneven.

[0013] Preferably, the control module is connected to the defibrillation tank and the preparation tank at the same time, and is used to selectively control the stirring operation of the defibrillation tank or the preparation tank according to different uniformity conditions.

[0014] Preferably, when unevenness exists, adjusting the stirring speed and / or stirring time of the defibrillation tank and / or the preparation tank includes: when unevenness exists, the default operation is to extend the stirring time of the preparation tank, and judging whether it becomes uniform by collecting the performance data of the slurry entering after adjustment.

[0015] Preferably, when unevenness exists, adjusting the stirring speed and / or stirring time of the defibrillation tank and / or the preparation tank comprises: when unevenness exists, if agglomerated long fibers are observed, increasing the stirring speed of the defibrillation tank.

[0016] Compared with the prior art, the tobacco slurry uniformity control system and method of the present invention, by setting a monitoring module and a control module, uses the monitoring module to detect the performance of the slurry entering the buffer tank from front to back, and feeds back the obtained data to the control module, uses the control module to receive the data collected by the monitoring module, and judges the mixing uniformity of the slurry entering the buffer tank from front to back based on the data. When there is unevenness, adjusts the stirring speed and / or stirring time of the defibrillation tank and / or the preparation tank, thereby realizing online monitoring and control of the tobacco slurry and improving the strength, processing performance and sensory quality of the slice. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 Schematic diagram of a tobacco slurry uniformity control system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0021] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0023] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0024] like Figure 1 As shown, an embodiment of the present invention provides a tobacco slurry uniformity control system for monitoring and controlling the uniformity of slurry mixing in the thin slice production process. In the thin slice production process, the slurry mixing equipment mainly includes a defibration tank 1, a preparation tank 2, and a buffer tank 3. The process flow is as follows: first, fiberboard, water, glycerin and other liquid materials are added to the defibration tank 1, and the fiber is defibrated by stirring. After the fiber is defibrated, the defibration liquid is quantitatively injected into the preparation tank 2, and then powdered raw materials such as tobacco dust and plant powder are added. After the solid and liquid are mixed, the slurry is prepared by stirring. Then the prepared slurry is injected into the buffer tank 3.

[0025] The tobacco slurry uniformity control system includes a monitoring module and a control module connected to each other. The monitoring module is used to detect the performance of the slurry entering the buffer tank 3 from front and back, and feed back the obtained data to the control module. The control module is connected to the monitoring module and controls the stirring operation of the fiber disintegration tank 1 or / and the preparation tank 2, and is used to receive the data collected by the monitoring module, and judge the mixing uniformity of the slurry entering the buffer tank 3 from front and back according to the data, and when there is unevenness, adjust the stirring speed or / and stirring time of the fiber disintegration tank 1 or / and the preparation tank 2.

[0026] In this embodiment, the performance detected by the monitoring module is the conductivity, and the data obtained is the conductivity value or current value. By detecting the change in conductivity or current between two points on different slurry planes in the buffer tank 3, the mixing uniformity of the slurries entering before and after can be determined. Figure 1 As shown, two electrodes are set on different slurry planes in the buffer tank 3 to detect the conductivity value or current value on the plane. When the slurry level reaches electrode 1 and electrode 1', electrode 1 and electrode 1' will obtain the conductivity value or current value, and when the slurry level reaches electrode 2 and electrode 2', the conductivity value or current value will continue to be obtained, and the value deviation between electrode 1 and electrode 2 will be calculated at the same time. If the value deviation does not exceed the set difference, continue to wait for the conductivity value or current value of electrode 3 and electrode 3' to be read, and so on. When the value deviation exceeds the set difference, it is considered that the slurry mixing is uneven.

[0027] Of course, in other embodiments, the performance detected by the monitoring module may also be other performance, such as optical performance. In this case, the data obtained is the light refractive index or reflectivity, that is, the mixing uniformity of the slurries entering front and back is judged by detecting the change of the light refractive index or reflectivity between two points of different slurry planes in the buffer tank 3. In addition, this embodiment calculates the numerical deviation of the data of the slurries entering front and back adjacently. If the numerical deviation exceeds the set difference, it is considered that the slurry mixing is uneven. In other embodiments, the uniformity of the slurry can also be judged by other methods.

[0028] In this embodiment, the control module is connected to the defibrination tank 1 and the preparation tank 2 at the same time, and is used to select and control the stirring operation of the defibrination tank 1 or the preparation tank 2 according to different uniformity conditions (which can be adjusted and selected by the operator). For example, when there is unevenness, the default operation can be set to extend the stirring time of the preparation tank 2, and judge whether it becomes uniform by collecting the performance data of the slurry entering after adjustment, and if agglomerated long fibers are observed, the stirring speed of the defibrination tank 1 is increased. Of course, corresponding settings can also be made according to the actual production situation, or the operator can make adjustments and selections according to the on-site situation.

[0029] The present embodiment also provides a method for controlling the uniformity of tobacco slurry, comprising: adding material into a defibration tank 1 for defibration, quantitatively injecting a defibration liquid into a preparation tank 2, and then adding a powdered raw material for solid-liquid mixing to prepare a slurry which is injected into a buffer tank 3, and then using a monitoring module to detect the performance of the slurry entering the buffer tank 3 from front and back, and feeding back the obtained data to a control module; using a control module to receive the data collected by the monitoring module, and judging the mixing uniformity of the slurry entering the buffer tank 3 from front and back based on the data, and when there is unevenness, adjusting the stirring speed and / or stirring time of the defibration tank 1 and / or the preparation tank 2.

[0030] Preferably, the performance detected by the monitoring module is the conductive performance, and the data obtained is the conductivity value or the current value, and the mixing uniformity of the slurries entering before and after is judged by detecting the change in conductivity or current between two points on different slurry planes in the cache tank 3; or the performance detected by the monitoring module is the optical performance, and the data obtained is the light refractive index or reflectivity, and the mixing uniformity of the slurries entering before and after is judged by detecting the change in light refractive index or reflectivity between two points on different slurry planes in the cache tank 3.

[0031] Preferably, judging the mixing uniformity of the slurries entering the cache tank 3 from front and back based on the data collected by the monitoring module includes: calculating the numerical deviation of the data of the slurries entering adjacent front and back, and if the numerical deviation exceeds the set difference, it is considered that the slurry mixing is uneven.

[0032] Preferably, the control module is connected to the defibrination tank 1 and the preparation tank 2 at the same time, and is used to select and control the stirring operation of the defibrination tank 1 or the preparation tank 2 according to different uniformity conditions. For example, when there is a non-uniform phenomenon, the default operation is to extend the stirring time of the preparation tank 2, and to determine whether it becomes uniform by collecting the performance data of the slurry entering after adjustment. When there is a non-uniform phenomenon, if agglomerated long fibers are observed, the stirring speed of the defibrination tank 1 is increased.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tobacco slurry uniformity control system, characterized in that: It includes a monitoring module and a control module that are connected to each other. The monitoring module is used to detect the performance of the slurry entering the buffer tank from front to back and feed back the obtained data to the control module. The control module is connected to the monitoring module and controls the stirring operation of the defibrillation tank and / or the preparation tank. It is used to receive the data collected by the monitoring module and judge the mixing uniformity of the slurry entering the buffer tank from front to back based on the data. When there is unevenness, the stirring speed and / or stirring time of the defibrillation tank and / or the preparation tank are adjusted.

2. The tobacco slurry uniformity control system according to claim 1, characterized in that: The performance detected by the monitoring module is the conductive performance, and the data obtained is the conductivity value or the current value. The mixing uniformity of the slurries entering before and after is judged by detecting the change in conductivity or current between two points on different slurry planes in the cache tank; or the performance detected by the monitoring module is the optical performance, and the data obtained is the light refractive index or reflectivity. The mixing uniformity of the slurries entering before and after is judged by detecting the change in light refractive index or reflectivity between two points on different slurry planes in the cache tank.

3. The tobacco slurry uniformity control system according to claim 1, characterized in that: The method of judging the mixing uniformity of the slurries entering the buffer tank from front and back based on the data collected by the monitoring module includes: calculating the numerical deviation of the data of the slurries entering from front and back adjacent to each other. If the numerical deviation exceeds the set difference, it is considered that the slurry mixing is uneven.

4. The tobacco slurry uniformity control system according to claim 1, characterized in that: The control module is connected to the defibrination tank and the preparation tank at the same time, and is used to selectively control the stirring operation of the defibrination tank or the preparation tank according to different uniformity conditions.

5. A method for controlling the uniformity of tobacco slurry, characterized in that: include: Add materials to the defibrillation tank for defibrillation, inject the defibrillation liquid into the preparation tank in a quantitative manner, add powdered raw materials for solid-liquid mixing to prepare slurry, and then inject it into the buffer tank. Then, use the monitoring module to detect the performance of the slurry entering the buffer tank from front to back, and feed the obtained data back to the control module; use the control module to receive the data collected by the monitoring module, and judge the mixing uniformity of the slurry entering the buffer tank from front to back based on the data. When there is unevenness, adjust the stirring speed and / or stirring time of the defibrillation tank and / or the preparation tank.

6. The method for controlling tobacco slurry uniformity according to claim 5, characterized in that: The performance detected by the monitoring module is the conductive performance, and the data obtained is the light refractive index or reflectivity. The mixing uniformity of the slurries entering before and after is judged by detecting the change in the light refractive index or reflectivity between two points on different slurry planes in the cache tank; or the performance detected by the monitoring module is the optical performance, and the data obtained is the conductivity value or the current value. The mixing uniformity of the slurries entering before and after is judged by detecting the change in the conductivity or current between two points on different slurry planes in the cache tank.

7. The method for controlling tobacco slurry uniformity according to claim 5, characterized in that: The method of judging the mixing uniformity of the slurries entering the buffer tank from front and back based on the data collected by the monitoring module includes: calculating the numerical deviation of the data of the slurries entering from front and back adjacent to each other. If the numerical deviation exceeds the set difference, it is considered that the slurry mixing is uneven.

8. The method for controlling tobacco slurry uniformity according to claim 5, characterized in that: The control module is connected to the defibrination tank and the preparation tank at the same time, and is used to selectively control the stirring operation of the defibrination tank or the preparation tank according to different uniformity conditions.

9. The method for controlling tobacco slurry uniformity according to claim 5, characterized in that: When unevenness exists, adjusting the stirring speed and / or stirring time of the defibrillation tank and / or the preparation tank includes: when unevenness exists, the default operation is to extend the stirring time of the preparation tank, and determine whether it becomes uniform by collecting performance data of the slurry entering after adjustment.

10. The method for controlling tobacco slurry uniformity according to claim 5, characterized in that: When the unevenness exists, adjusting the stirring speed and / or stirring time of the defibrillation tank and / or the preparation tank includes: when the unevenness exists, if agglomerated long fibers are observed, increasing the stirring speed of the defibrillation tank.

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