A stirring method for preparing tobacco sheet based on tobacco powder material

Abstract

The patent discloses a stirring method for preparing tobacco sheet based on tobacco powder material, wherein the moisture content of the tobacco powder material is less than or equal to 8%, and the tobacco powder material is stirred in a stirring system, which comprises a stirring tank, a stirring shaft and an electromagnetic field generating device. The stirring shaft is vertically installed inside the stirring tank and is provided with a rigid blade layer and a magnetically responsive flexible blade layer along the axial direction. The electromagnetic field generating device is used for generating an alternating electromagnetic field. The stirring method comprises the following steps: putting tobacco raw materials, water and spices, and starting the stirring shaft to pre-mix; after the pre-mixing is completed, the rotating speed of the stirring shaft is increased to 180-250 rpm, the electromagnetic field generating device is started to generate an alternating electromagnetic field so that the magnetically responsive flexible blade layer is subjected to active controllable deformation movement, thereby performing intensive shearing work; after the intensive shearing work is completed, the electromagnetic field generating device is turned off, the rotating speed of the stirring shaft is reduced to 40-60 rpm, and the discharging is performed. The patent realizes the purpose of solving the problem that the tobacco sheet is easy to be agglomerated during the preparation process.

Description

Technical Field

[0001] This patent belongs to the field of novel tobacco products, specifically relating to a stirring method for preparing tobacco sheets based on tobacco powder materials. Background Technology

[0002] In the preparation of new tobacco sheets, relatively dry tobacco powder (moisture content ≤8%), a certain proportion of water, and high-viscosity flavoring need to be uniformly mixed in the material mixing tank.

[0003] However, due to the low moisture content of tobacco powder, it is prone to clumping during the mixing process, leading to uneven mixing and affecting the smoking experience. Therefore, there is an urgent need for a new mixing method to solve the problem of clumping during the preparation of tobacco sheets. Summary of the Invention

[0004] The purpose of this patent is to provide a stirring method for preparing tobacco sheets based on tobacco powder materials, thereby solving the problem of easy clumping during the preparation of tobacco sheets.

[0005] To solve the above-mentioned technical problems, this patent adopts the following technical solution: A stirring method for preparing tobacco sheets based on tobacco powder material, wherein the moisture content of the tobacco powder material is ≤8%, and the tobacco powder material is stirred in a stirring system. The mixing system includes a mixing tank, a mixing shaft, and an electromagnetic field generator. The stirring shaft is vertically installed inside the mixing tank, and rigid blade layers and magnetically responsive flexible blade layers are arranged along the axial direction. Electromagnetic field generators are used to generate alternating electromagnetic fields; The stirring method includes the following steps: Step A: Add tobacco raw materials, water and spices, start the stirring shaft for premixing. The premixing speed is 80-90 rpm, 90-100 rpm, 100-120 rpm, or 120-150 rpm, and the premixing time is 8-15 minutes. Step B: After the premixed materials are completed, the speed of the stirring shaft is increased to 180-250 rpm, and the electromagnetic field generator starts to generate an alternating electromagnetic field so that the magnetic response flexible blade layer undergoes active and controllable deformation movement, thereby performing enhanced shearing work. Step C: After completing the enhanced shearing process, turn off the electromagnetic field generator, reduce the stirring shaft speed to 40-60 rpm, and discharge the material.

[0006] Furthermore, in step B, the enhanced shearing operation includes flutter mode, slapping mode, and / or intermittent perturbation mode. The flutter mode controller generates a high-frequency, low-amplitude alternating current with a frequency of 70-90 Hz and a magnetic field strength of 0.1-0.3 T to change the alternating electromagnetic field; The controller for the tapping mode generates a low-frequency, high-amplitude alternating current with a frequency of 20-50 Hz and a magnetic field strength of 0.3-0.5 T to change the alternating electromagnetic field; The controller in intermittent disturbance mode generates pulse currents with a pulse width of 0.1-1 s and a peak magnetic field strength of 0.2-0.5 T.

[0007] Furthermore, the duration of the flutter mode is 5-15 minutes; The tapping mode lasts for 5-15 minutes; The duration of the intermittent disturbance mode is 5-15 minutes.

[0008] Furthermore, the magnetically responsive flexible blade layer includes a blade; The blade is made of an integrated magnetic elastomer composite material; Based on parts by weight, the integrated magnetic elastomer composite material comprises the following components: The polymer elastomer matrix is ​​80-90 parts, 90-100 parts, 100-110 parts, or 110-120 parts; The magnetic particles are in quantities of 30-40 parts, 30-40 parts, 40-50 parts, or 50-60 parts; The amount of plasticizer is 5-10 parts; The polymer elastomer matrix includes silicone rubber or polyurethane elastomer; Magnetic particles include neodymium iron boron magnetic powder; Plasticizers include silicone oil.

[0009] Furthermore, flavorings include flavor thickeners and flavorings.

[0010] Furthermore, the mass ratio of tobacco powder to flavoring is (1-2):1, (2-3):1, (3-5):1, (5-7):1, or (7-10):1; The mass ratio of tobacco powder to water is (1-2):1, (2-3):1, (3-5):1 or (5-10):1.

[0011] Furthermore, the flavorings include vanillin and / or menthol; Flavor thickeners include xanthan gum, propylene glycol, and / or glycerin.

[0012] Furthermore, the mass ratio of flavor thickener to fragrance is (5-10):1, (10-15):1, (15-20):1, or (20-30):1.

[0013] Furthermore, the stirring system also includes a near-infrared uniformity probe.

[0014] Furthermore, step C also includes the following steps: The maximum size and uniformity of the agglomerates were measured every 1 minute using a near-infrared probe. The controller adjusts the enhanced shearing parameters based on the maximum size and uniformity.

[0015] This patent provides a stirring method for preparing tobacco sheets based on tobacco powder material. By arranging rigid shear blades and magnetically responsive flexible blades at different heights of the stirring shaft, and using an electromagnetic field generator to generate an active and controllable alternating electromagnetic field to drive the magnetically responsive flexible blades, it produces a variety of controllable deformation movements such as fluttering, slapping, and intermittent disturbance, rather than relying on passive fluid resistance. This overcomes the limitations of passive flexible stirring technology and achieves adaptive mode switching for different material states and agglomerate sizes through active electromagnetic drive, implementing a synergistic effect of "hard crushing + active flexible peeling" on agglomerates.

[0016] Meanwhile, the integrated solid magnetic elastomer blade eliminates the risk of leakage, unlike magnetorheological fluid-based liquid-filled structures. No magnetic medium needs to be added to the material (the blade itself is a magnetoelastic material, and the magnetic powder encapsulation does not fall off), making it safe, hygienic, and compatible with tobacco sheet production standards. This technology significantly reduces agglomerate size during material mixing. In a typical tobacco sheet formulation, the maximum agglomerate size is reduced from ≥15mm to ≤2mm, and the mixing uniformity (coefficient of variation, CV) is ≤5%, far superior to existing mixing equipment. It also reduces mixing power consumption by over 20% and shortens mixing time by over 30%. The equipment modification cost is low: existing mixing tanks can be equipped with electromagnetic coils and have their flexible blades replaced without requiring a complete replacement, making it suitable for industrial application. Attached Figure Description

[0017] The above content of this patent and the following detailed embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed technical solution.

[0018] Figure 1 This is a schematic diagram of the stirring system in this patent; Figure 2 This is a flowchart of the stirring method for preparing tobacco sheets based on tobacco powder material in this patent.

[0019] The reference numerals in the attached figures are explained as follows: Mixing tank: 1 Stirring shafts: 2 Rigid blade layer: 3 Magnetic Response Flexible Blade Layer: 4 Controllers: 5 Iron core: 51 Electromagnetic coil: 52 Near-infrared uniformity probe: 6 Detailed Implementation

[0020] The detailed features and advantages of this patent are described below in the specific embodiments. The content is sufficient to enable any person skilled in the art to understand the technical content of this patent and implement it accordingly. Based on the specification, claims and drawings disclosed in this specification, a person skilled in the art can easily understand the related objectives and advantages of this patent.

[0021] This specification also uses several compound terms to describe devices, components, equipment, etc. that include more than one function, or to assign additional functions to a corresponding device, component, equipment, etc. Those skilled in the art will understand that such compound terms can be implemented by a single or multiple devices, components, equipment, etc., as long as they are reasonable under the interpretation rules of this patent terminology.

[0022] It should be noted that in this specification, similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and interpreted in subsequent figures. In this specification and claims, several terms will be used, and unless otherwise indicated, these terms will be defined as having the following meanings: The terms “comprising” or “having” have the same meaning as “containing”, and also include other forms of the term, such as the gerund and singular forms in English, meaning including but not limited to, and not intended to exclude, for example, other elements, components, integers or steps. All other terms used herein for special definition are intended to have the general meaning understood by one of ordinary skill in the art, and in particular, meaning that one of ordinary skill in the art, upon reading the claims, specification and drawings of this patent, can directly and without doubt determine how the technical solution of this patent can be implemented.

[0023] Even if there are incomplete descriptions, omissions, or ambiguities in the grammar, words, punctuation, graphics, symbols, etc. of the claims, specification, and drawings of this patent, a person skilled in the art can still arrive at the only correct understanding by reading the claims, specification, and drawings as a whole without extensive reasoning or experimentation, and effectively exclude various incorrect interpretations that are not aimed at achieving the purpose of this patent.

[0024] Those skilled in the art would first choose to read the claims, specification, and drawings of this patent to reasonably interpret the terms; secondly, they would choose to refer to the relevant definitions in other documents published by the applicant before the filing date to reasonably interpret the terms; thirdly, they would choose the references cited in this patent to reasonably interpret the terms; and finally, they would choose to combine the technical dictionaries, technical manuals, reference books, textbooks, national or industry technical standards, etc., commonly used by those skilled in the art to reasonably interpret the terms.

[0025] All references cited in this application are incorporated herein by way of quotation, to the extent that they do not contradict the disclosure herein. It will be apparent to those skilled in the art that products (apparatus, components, devices, compounds, compositions, materials, etc.) and methods (processes, steps, conditions, parameters, equipment, and test methods, equipment, etc.) not specifically described herein can be applied to the implementation of the inventions fully disclosed herein without the need for excessive experimentation. This patent is intended to cover all functional equivalents known in the art of the methods, apparatus, apparatus components, materials, processes, and techniques specifically described herein. All cited references include: The following publications are included: Marks' Standard Handbook for Mechanical Engineers (11th edition and other editions prior to this patent application date), published by McGraw-Hill, Inc.; DeGarmo's Materials and Processes in Manufacturing (13th edition and other editions prior to this patent application date), published by Wiley; Machinery's Handbook (32nd edition and other editions prior to this patent application date), published by IndustrialPress Inc.; Mechanical Design Handbook (6th edition and other editions prior to this patent application date), edited by Cheng Daxian, published by Chemical Industry Press; and Modern Mechanical Design Handbook (6th edition and other editions prior to this patent application date), edited by Wen Bangchun, published by Machinery Industry Press.

[0026] This patent will now be described with reference to the accompanying drawings, in which similar reference numerals denote similar elements. While specific structures and arrangements are discussed, it should be understood that this is done merely for illustrative purposes. Those skilled in the art will recognize that other structures and arrangements can be used without departing from the spirit and scope of this patent. It will be clear to those skilled in the art that this patent can also be used in a variety of other applications.

[0027] like Figure 1-2 As shown, this patent provides a rigid-flexible coupled electromagnetic active enhanced stirring system for mixing tobacco sheet materials, comprising: Mixing tank 1: Vertical cylindrical or conical bottom tank, made of 304 or 316L stainless steel, with a feed inlet at the top and a discharge valve at the bottom.

[0028] Stirring shaft 2: Vertically installed in the center of the tank, driven by a top-mounted variable frequency motor with adjustable speed (0-300 rpm).

[0029] Multi-layer cutter assembly: A rigid cutter layer 3 and a magnetically responsive flexible cutter layer 4 are arranged along the axial direction.

[0030] Rigid blade layer 3 (usually mounted on the top) has serrated or cutting edges on the leading edge of the blade, used for macroscopic crushing of large clumps and generating axial circulation.

[0031] The magnetically responsive flexible blade layer 4 (installed below the rigid blade layer 3) is evenly distributed circumferentially, and the blade is made of magnetic elastic composite material with a horizontal willow leaf shape.

[0032] Electromagnetic field generating device: including controller 5, electromagnetic coil 52 and optional iron core 51.

[0033] The electromagnetic coil 52 is fixedly installed on the outer wall of the tank near the magnetically responsive flexible blade layer 4 to generate a controllable alternating electromagnetic field.

[0034] Iron core 51 is connected to electromagnetic coil 52.

[0035] The core 51 is made of a high-permeability material (silicon steel sheet or ferrite) and is used to concentrate magnetism and enhance the strength of the magnetic field.

[0036] The controller 5 is a PLC or embedded control unit, which is electrically connected to the electromagnetic coil 52, torque sensor, uniformity probe, etc. It is used to independently adjust the frequency, intensity and waveform of the electromagnetic field to achieve switching between different working modes.

[0037] Near-infrared uniformity probe 6: Installed on the lower side wall of the mixing tank 1, with the front end of the probe extending into the tank to detect the size distribution of agglomerates online.

[0038] The magnetically responsive flexible blade layer 4 includes a blade, a recess, corrugations, a mounting shaft, and a mounting base.

[0039] Dents and ripples are added to the blade surface to enhance the peeling effect.

[0040] One end of the blade is connected to the mounting shaft, which is fixed in the mounting base.

[0041] The blade is made of a single magnetic elastomer composite material.

[0042] Specific formula (parts by weight): Polymer elastomer matrix (silicone rubber or polyurethane elastomer): 100 parts; Magnetic particles (NdFeB magnetic powder, particle size 5-20 μm, remanence 1.2T): 30-60 parts; Plasticizer (such as silicone oil): 5-10 parts; Vulcanizing agent / crosslinking agent: appropriate amount.

[0043] Preparation method: After the above components are mixed evenly, they are molded into shape. The blade thickness is 2-6 mm, the width is 30-80 mm, and the length is 150-300 mm. The root of the blade is fixed in the blade holder groove of the stirring shaft 2 by a metal clamp and can swing around the root at a small angle (±15°).

[0044] When an alternating current is applied to the electromagnetic coil 52, an alternating electromagnetic field is generated. The magnetically responsive flexible blade layer 4 is subjected to a periodic electromagnetic torque in the alternating electromagnetic field, resulting in an active and controllable deformation motion.

[0045] Controller 5 achieves the following three operating modes by independently adjusting the frequency, intensity, and waveform of the excitation current: First operating mode (chatter mode): A high-frequency, low-amplitude alternating current with a frequency of 80 Hz and a magnetic field strength of 0.2T is applied, generating micron-level (0.1-0.2 mm) high-frequency vibrations at the free end of the blade, with the amplitude direction perpendicular to the main plane of the blade. This mode utilizes the peeling effect of high-frequency micro-vibration to remove the wetted thin layer on the surface of tiny agglomerates.

[0046] The second working mode (slapping mode): a low-frequency, high-amplitude alternating current with a frequency of 30 Hz and a magnetic field strength of 0.4T is applied. The free end of the blade generates periodic large-amplitude bending and rapid rebound, which applies impact force to the agglomerates and breaks up large (>10 mm) aggregates.

[0047] The third working mode (intermittent disturbance mode): a random pulse current is applied (pulse width 0.1-1s, pulse interval random, peak magnetic field strength 0.3T), and the free end of the blade generates irregular complex deformation motion, which is used to eliminate tiny residual agglomerates (1-3 mm) and clean the blade surface.

[0048] Interlayer collaborative control (when multiple flexible blades are set): Each flexible blade layer is equipped with an independent electromagnetic coil 52, and the striking mode of adjacent flexible layers can be set to out-of-phase drive (phase difference 180°), so that the upper and lower blades strike alternately, producing a "rubbing" effect, which further increases the local shear stress.

[0049] This patent further provides a stirring method for preparing tobacco sheets based on tobacco powder materials, the steps of which are as follows: Step S1: Material input and premixing Add tobacco powder (200 mesh), water (or water + ethanol mixture), and high-viscosity flavoring in the following order according to the formula.

[0050] Start stirring shaft 2 at 100 rpm for 10 minutes. The rigid blade layer 3 and the magnetically responsive flexible blade layer 4 are pre-mixed as stirring shaft 2 rotates, which initially wets the material and forms agglomerates.

[0051] Step S2: Enhance the selection and execution of shearing tasks

[0052] Increase the speed of stirring shaft 2 to 200 rpm.

[0053] Controller 5 automatically selects the initial working mode based on the preset formula or online test data (which can be executed sequentially or switched dynamically): Beating mode: Primarily used in the initial stage to break up large clumps (>10 mm).

[0054] Flutter mode: Used in the intermediate stage to peel away small clumps (2-10 mm) from the surface.

[0055] Intermittent perturbation mode: used in the final stage to eliminate residual micro-agglomerates and self-clean.

[0056] Step S3: Online Detection and Feedback

[0057] The near-infrared probe detects the maximum size (D_max) and uniformity CV value of the agglomerates every 1 minute.

[0058] The controller 5 compares the detected value with a preset threshold (D_max ≤ 2 mm and CV ≤ 5%).

[0059] Step S4: Mode switching judgment

[0060] If the threshold is met, proceed to the discharge step.

[0061] If the conditions are not met, the controller 5 adjusts the working mode or parameters according to the deviation (such as increasing the magnetic induction intensity of the tapping mode or increasing the flutter frequency), and returns to step S2.

[0062] Step S5: Discharge

[0063] Turn off the electromagnetic field, reduce the speed of stirring shaft 2 to 50 rpm, and open the discharge valve.

[0064] To further demonstrate the advantages of this patent, the following embodiments and comparative examples are provided for illustration.

[0065] Example 1

[0066] Raw materials: 120 kg of tobacco powder (200 mesh, 8% moisture content), 60 kg of water, and high-viscosity flavoring (40 kg of propylene glycol, 2 kg of vanillin, 1 kg of menthol, and 0.6 kg of xanthan gum).

[0067] Equipment: A stainless steel mixing tank, equipped with one layer of rigid blades (top layer) and three layers of flexible blades (middle and lower layers). Flexible blades: 250 mm long, 50 mm wide, 4 mm thick, Shore A hardness 60, 100 parts polyurethane elastomer, 45 parts neodymium iron boron magnetic powder, and 8 parts silicone oil.

[0068] The work steps are as follows: After feeding, premix at 100 rpm for 10 minutes.

[0069] Accelerate to 200 rpm and activate the electromagnetic field: 10min: Tapping mode (80Hz, 0.2T) 10min: Flutter mode (30Hz, 0.4T) 10 min: Intermittent perturbation mode (random pulses, peak value 0.3 T) Detection results: D_max = 3 mm at 40 min, D_max = 1.5 mm at 30 min, CV = 4.2%.

[0070] Discharge.

[0071] Results: Compared with pure rigid stirring (150 rpm, D_max=8 mm after 60 min), the mixing time was shortened by 42% and energy consumption was reduced by 25%.

[0072] Example 2

[0073] Raw materials: 150 kg of tobacco powder (200 mesh, 8% moisture content), 70 kg of water, and high-viscosity flavoring (20 kg of glycerin, 1.5 kg of menthol, and 0.5 kg of xanthan gum).

[0074] Equipment: A stainless steel mixing tank, equipped with one layer of rigid blades (top layer) and three layers of flexible blades (middle and lower layers). Flexible blades: 250 mm long, 50 mm wide, 4 mm thick, Shore A hardness 60, 100 parts polyurethane elastomer, 45 parts neodymium iron boron magnetic powder, and 8 parts silicone oil.

[0075] The work steps are as follows: After feeding, premix at 80 rpm for 10 min.

[0076] Speed ​​up to 180 rpm, tapping mode (25 Hz, 0.7 T) for 10 min, vibration mode (150 Hz, 0.2 T) for 20 min, and intermittent perturbation for 2 min.

[0077] Detection: D_max=1.2 mm, CV=3.8%.

[0078] Comparative Example A (purely rigid stirring)

[0079] Raw materials: 120 kg of tobacco powder (200 mesh, 8% moisture content), 60 kg of water, and high-viscosity flavoring (40 kg of propylene glycol, 2 kg of vanillin, 1 kg of menthol, and 0.6 kg of xanthan gum).

[0080] Equipment: 1 stainless steel mixing tank, equipped with 4 layers of rigid blades.

[0081] After feeding, premix at 100 rpm for 10 min, then increase the speed to 200 rpm and stir for 30 min, with D_max=12 mm.

[0082] Comparative Example B (Passive Flexible Stirring)

[0083] Raw materials: 120 kg of tobacco powder (200 mesh, 8% moisture content), 60 kg of water, and high-viscosity flavoring (40 kg of propylene glycol, 2 kg of vanillin, 1 kg of menthol, and 0.6 kg of xanthan gum).

[0084] Equipment: A stainless steel mixing tank, equipped with one layer of rigid blades (top layer) and three layers of flexible blades (middle and lower layers). Flexible blades: 250 mm long, 50 mm wide, 4 mm thick, Shore A hardness 60, 100 parts polyurethane elastomer, 45 parts neodymium iron boron magnetic powder, and 8 parts silicone oil.

[0085] Without applying a magnetic field to the flexible blade, after feeding, it is premixed at 100 rpm for 10 min, then the speed is increased to 200 rpm and stirred for 30 min. D_max=6 mm, and the surface of the flexible blade is adhered.

[0086] Table 1: Comparison of the effects of the examples and comparative examples

[0087] As can be seen from Table 1, the performance of Examples 1-2 is superior to that of the comparative examples in all aspects.

[0088] The terms and expressions used in this specification are for illustrative purposes and not for limitation. Their use is not intended to exclude any equivalents of the features or portions thereof shown, but rather to facilitate the understanding that various modifications may be possible within the scope of this patent claim. Therefore, it should be understood that while this patent has been specifically disclosed through preferred embodiments, exemplary embodiments, and optional features, variations or modifications of the concepts disclosed herein may be adopted by those skilled in the art, and such variations and modifications are therefore considered to be within the scope of this patent as defined by the appended claims. The specific embodiments given in this specification are examples of useful embodiments of this patent, and it will be apparent to those skilled in the art that this patent can be implemented using many variations of the devices, device components, and method steps disclosed herein.

[0089] The foregoing description of specific embodiments fully discloses the general features of this patent, enabling others to easily modify and / or adapt such embodiments for various applications by applying knowledge within the scope of the art, without excessive experimentation or deviation from the general concept of this patent. Therefore, based on the teachings and guidance provided herein, it is intended that such modifications and alterations be included within the meaning and scope of equivalents of the disclosed embodiments. It should be understood that the wording or terminology used herein is for descriptive purposes and not intended to be limiting; thus, the wording or terminology in this specification will be interpreted by those skilled in the art based on the foregoing teachings and guidance.

[0090] Furthermore, the scope of this patent should not be limited to any of the exemplary embodiments described above, but only to the appended claims and their equivalents.

Claims

1. A stirring method for preparing tobacco sheets based on tobacco powder material, characterized in that, The moisture content of the tobacco powder material is ≤8%, and the tobacco powder material is stirred in a stirring system. The stirring system includes a stirring tank, a stirring shaft, and an electromagnetic field generator. The stirring shaft is vertically installed inside the stirring tank, and rigid blade layers and magnetically responsive flexible blade layers are arranged along the axial direction respectively. The electromagnetic field generating device is used to generate an alternating electromagnetic field; The stirring method includes the following steps: Step A: Add tobacco raw materials, water and flavorings, and start the stirring shaft for premixing. The premixing speed is 80-90 rpm, 90-100 rpm, 100-120 rpm, or 120-150 rpm, and the premixing time is 8-15 minutes. Step B: After the premixed material is completed, the rotation speed of the stirring shaft is increased to 180-250 rpm, and the electromagnetic field generator starts to generate the alternating electromagnetic field so that the magnetically responsive flexible blade layer undergoes active and controllable deformation movement, thereby performing enhanced shearing work; Step C: After completing the enhanced shearing operation, turn off the electromagnetic field generator, reduce the stirring shaft speed to 40-60 rpm, and discharge the material.

2. The stirring method for preparing tobacco sheets based on tobacco powder material according to claim 1, characterized in that, In step B, the enhanced shearing operation includes flutter mode, slapping mode, and / or intermittent perturbation mode. The controller of the flutter mode generates a high-frequency, low-amplitude alternating current with a frequency of 70-90 Hz and a magnetic field strength of 0.1-0.3 T to change the alternating electromagnetic field; The controller of the tapping mode generates a low-frequency, high-amplitude alternating current with a frequency of 20-50 Hz and a magnetic field strength of 0.3-0.5 T to change the alternating electromagnetic field; The controller of the intermittent disturbance mode generates a pulse current with a pulse width of 0.1-1 s and a peak magnetic field strength of 0.2-0.5 T.

3. The stirring method for preparing tobacco sheets based on tobacco powder material according to claim 2, characterized in that, The duration of the flutter mode is 5-15 minutes; The duration of the tapping mode is 5-15 minutes; The duration of the intermittent disturbance mode is 5-15 minutes.

4. The stirring method for preparing tobacco sheets based on tobacco powder material according to claim 1, characterized in that, The magnetically responsive flexible blade layer includes a blade; The blade is made of an integrated magnetic elastomer composite material; The integrated magnetic elastomer composite material comprises the following components by weight: The polymer elastomer matrix is ​​80-90 parts, 90-100 parts, 100-110 parts, or 110-120 parts; The magnetic particles are in quantities of 30-40 parts, 30-40 parts, 40-50 parts, or 50-60 parts; The amount of plasticizer is 5-10 parts; The polymer elastomer matrix includes silicone rubber or polyurethane elastomer; The magnetic particles include neodymium iron boron magnetic powder; The plasticizer includes silicone oil.

5. The stirring method for preparing tobacco sheets based on tobacco powder material according to claim 1, characterized in that, The flavorings include flavor thickeners and flavorings.

6. The stirring method for preparing tobacco sheets based on tobacco powder material according to claim 5, characterized in that, The mass ratio of the tobacco powder to the flavoring is (1-2):1, (2-3):1, (3-5):1, (5-7):1, or (7-10):1; The mass ratio of the tobacco powder to the water is (1-2):1, (2-3):1, (3-5):1, or (5-10):

1.

7. The stirring method for preparing tobacco sheets based on tobacco powder material according to claim 5, characterized in that, The flavoring includes vanillin and / or menthol; The flavor thickeners include xanthan gum, propylene glycol, and / or glycerin.

8. The stirring method for preparing tobacco sheets based on tobacco powder material according to claim 7, characterized in that, The mass ratio of the flavor thickener to the flavor is (5-10):1, (10-15):1, (15-20):1, or (20-30):

1.

9. The stirring method for preparing tobacco sheets based on tobacco powder material according to claim 1, characterized in that, The stirring system also includes a near-infrared uniformity probe.

10. The stirring method for preparing tobacco sheets based on tobacco powder material according to claim 9, characterized in that, Step C further includes the following steps: The maximum size and uniformity of the agglomerates were measured every 1 minute using a near-infrared probe. The controller adjusts the enhanced shearing parameters based on the maximum size and the uniformity.

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