A tobacco processing based smoking agent adding device and method

Abstract

The application discloses a tobacco processing-based smoking agent adding device and method, and relates to the tobacco processing field. The device comprises a liquid preparation unit and a mixing unit. The liquid preparation unit comprises a multi-way switching valve, an air filter, a liquid storage tank, a liquid inlet pipeline, a liquid inlet flowmeter and a suction pump. The mixing unit comprises a vacuum stirring bin. The multi-way switching valve is provided with a common channel and a plurality of sub-channels. The air filter and the plurality of liquid storage tanks are connected with the sub-channels correspondingly. The liquid storage tank comprises a glycerol tank for storing glycerol. One end of the liquid inlet pipeline is connected with the common channel. The liquid inlet flowmeter and the suction pump are arranged on the liquid inlet pipeline in sequence. The suction pump delivers the material to the vacuum stirring bin. The application solves the problems of poor uniformity, low absorption efficiency and insufficient absorption of glycerol in tobacco.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing technology, and in particular to a method for adding a smoke-generating agent based on tobacco processing. Background Technology

[0002] In tobacco processing, adding modifying agents to tobacco leaves is an important step. The purpose is to add agents that reduce tobacco irritation and off-flavors, and to balance and improve the taste, thereby improving the intrinsic quality of the tobacco and increasing its processing resistance. Glycerin, with its high volatility, produces a large amount of smoke during smoking, which not only enhances the visual appeal of smoking but also provides a unique taste and smoky sensation, contributing to a more enjoyable experience when smoking heated cigarettes.

[0003] However, in the existing glycerin addition process, due to the certain length of the pipeline passing through various devices, glycerin residue is caused, making it difficult to accurately control the amount of glycerin added. This results in the final amount of glycerin added being too much or too little, affecting the quality of tobacco. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a smoking agent addition device and method based on tobacco processing, so as to solve the problem that it is difficult to accurately control the amount of glycerol added in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention is implemented using the following solution:

[0006] In a first aspect, the present invention provides a tobacco-based smoke-generating agent addition device, comprising a liquid preparation unit and a mixing unit; the liquid preparation unit includes a multi-way switching valve, an air filter, a liquid storage tank, an inlet pipeline, an inlet flow meter, and a suction pump; the mixing unit includes a vacuum mixing chamber; the multi-way switching valve is provided with a common channel and several sub-channels; the air filter and several liquid storage tanks are correspondingly connected to each sub-channel; the liquid storage tank includes a glycerin tank storing glycerin; one end of the inlet pipeline is connected to the common channel; an inlet flow meter and a suction pump are sequentially arranged on the inlet pipeline; the suction pump transports the material to the vacuum mixing chamber.

[0007] Furthermore, the storage tank also includes an ethanol tank for storing ethanol and a washing liquid tank for storing cleaning fluid.

[0008] Furthermore, the piping between the inlet flow meter and the common channel port must meet the requirement L×S≤6cm. 3 Where L is the length of the pipeline and S is the cross-sectional area of ​​the pipeline.

[0009] Furthermore, it also includes an emulsification unit and a pumping unit; the emulsification unit includes an emulsification agitator, the inlet of which is connected to the other end of the liquid inlet pipe; the pumping unit includes an air compressor, a steam generator, a drain pipe and a nozzle, the air compressor is connected to the inlet of the emulsification agitator through a high-pressure air pipe, the steam generator is connected to the inlet of the emulsification agitator through a steam pipe, one end of the drain pipe is connected to the outlet of the emulsification agitator and the other end is connected to the vacuum mixing chamber, the nozzle is located at the other end of the drain pipe and passes through the center of the space inside the vacuum mixing chamber, and the nozzle is oriented at a certain angle to the horizontal plane.

[0010] Furthermore, the emulsifying agitator is equipped with a tank pressure gauge and a tank pressure transmitter, an inlet solenoid valve is installed on the high-pressure gas pipeline, a steam solenoid valve is installed on the steam pipeline, a solenoid three-way valve is installed on the drain pipeline, a steam branch is installed between the solenoid three-way valve and the steam pipeline, and a branch solenoid valve is installed on the steam branch.

[0011] Furthermore, the vacuum mixing chamber is equipped with a vacuum pump, a temperature transmitter, a chamber pressure gauge, and a chamber pressure transmitter. The vacuum mixing chamber includes an outer cylinder, an inner cylinder, a sealing plate, and a chamber door. The inner cylinder and the outer cylinder are coaxially arranged and the inner cylinder can rotate relative to the outer cylinder. An electric heater is wrapped around the outer cylinder. The inner cylinder has several small through holes. Both the outer cylinder and the inner cylinder are open at the same end. The sealing plate and the chamber door are detachably fixed to the opening of the inner cylinder and the opening of the outer cylinder, respectively. At least three lifting plates are evenly arranged along the inner wall of the inner cylinder. Several rake teeth of a certain length are evenly arranged along the plate body and facing the central axis of the inner cylinder.

[0012] Furthermore, it also includes a drive motor and roller assembly. The drive motor is located outside the vacuum mixing chamber, and the two roller assemblies are symmetrically arranged on the bottom inner wall of the outer cylinder. The roller assembly includes a roller shaft and at least two rollers coaxially arranged on the roller shaft. The roller shaft of one side of the roller assembly is magnetically connected to the drive motor through a magnetic drive device, and each roller is in contact with the inner cylinder.

[0013] Furthermore, it also includes a waste liquid tank, a waste liquid pipeline, and a waste liquid electrically controlled valve. The waste liquid tank is connected to the vacuum mixing chamber through the waste liquid pipeline, and the waste liquid pipeline is equipped with a waste liquid electrically controlled valve.

[0014] In a second aspect, the present invention provides a method for adding a smoking agent based on tobacco processing, applied to the tobacco processing-based smoking agent adding apparatus described in the first aspect, comprising:

[0015] Control the multi-way switching valve to switch to the corresponding sub-channel of the glycerin tank, start the suction pump until the inlet flow meter measures the set glycerin volume, and then stop.

[0016] Control the multi-way switching valve to switch to the corresponding sub-channel of the ethanol tank, start the suction pump until the inlet flow meter measures the set ethanol volume and then stop;

[0017] Control the multi-way switching valve to switch to the corresponding sub-channel of the air filter, start the suction pump until all the liquid in the inlet line is discharged into the emulsifying agitator and then stop;

[0018] After placing a certain amount of tobacco into the inner cylinder of the vacuum mixing chamber, close the chamber door and evacuate the vacuum mixing chamber to a vacuum. Start the emulsifying stirrer to stir the mixture in the tank until the glycerin is emulsified.

[0019] Start the air compressor and steam generator and open the drain line; start the drive motor to drive the inner cylinder to rotate relative to the outer cylinder.

[0020] After the drain line is open for a certain period of time, turn off the air compressor, steam generator and drain line. Evacuate the vacuum mixing chamber to a vacuum and maintain the pressure for at least 30 seconds. Then start the air compressor and steam generator and open the drain line. Repeat until the mixture in the emulsifying mixer is completely sprayed.

[0021] After a delay of at least 10 seconds, shut down the air compressor, steam generator, and drain line, and maintain the pressure in the vacuum mixing chamber for at least 3 minutes.

[0022] Start the air compressor and open the drain line to break up the vacuum mixing chamber until the pressure inside the vacuum mixing chamber reaches atmospheric pressure, then stop the drive motor.

[0023] After opening the vacuum mixing chamber and removing the tobacco, close the chamber door.

[0024] Furthermore, after the tobacco is removed from the vacuum mixing chamber, it also includes:

[0025] Control the multi-way switching valve to switch to the corresponding sub-channel of the washing liquid tank, start the suction pump to draw a certain amount of cleaning liquid into the emulsifying agitator and then stop.

[0026] Control the multi-way switching valve to switch to the corresponding sub-channel of the air filter, start the suction pump until all the liquid in the inlet line is discharged into the emulsifying agitator and then stop;

[0027] After starting the emulsifying agitator and stirring for a certain period of time, start the air compressor to inject compressed air into the emulsifying agitator, open the drain pipe and start the drive motor to drive the inner cylinder to rotate, and open the waste liquid pipe to guide the cleaning liquid after cleaning to the waste liquid tank.

[0028] After the cleaning fluid in the emulsifying mixer has been completely drained, keep the air compressor running until there is no residual liquid in the drain pipe and the inner cylinder is dry, then turn off the air compressor and drive motor.

[0029] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0030] 1. This invention achieves precise control of the amount of glycerin added by cooperating with a multi-way switching valve, a flow meter and a suction pump. The multi-way switching valve connects to a sub-channel with an air filter, and air purging is used to remove residual liquid in the liquid inlet pipeline, avoiding the adverse effect of pipeline residue on the feeding accuracy.

[0031] 2. This invention connects the liquid inlet channel to different storage tanks or air filters as needed via a multi-way switching valve, so as to facilitate the use of different liquids or air, which can greatly facilitate the preparation of glycerol mixtures and improve the preparation efficiency and accuracy of mixtures.

[0032] 3. This invention uses an air compressor to inject compressed air into the emulsifying mixer, which increases the pressure inside the emulsifying mixer, thereby forcing the mixture in the emulsifying mixer to be sprayed through the nozzle at the end of the drain pipe; and after spraying, the air compressor continues to work to blow some of the residual glycerol mixture in the emulsifying mixer into the vacuum mixing chamber, avoiding the presence of mixture residue in the emulsifying mixer and the drain pipe, while realizing the vacuum breaking operation in the vacuum mixing chamber.

[0033] 4. The present invention uses a steam generator to achieve glycerol injection when the glycerol concentration is high, thereby assisting in glycerol injection; on the other hand, the steam branch can realize the rehumidification of tobacco in the vacuum stirring chamber, increasing the versatility and applicability of the device.

[0034] 5. In this invention, the nozzle is placed in the center of the vacuum mixing chamber and faces at a certain angle to the horizontal plane, so that the spray surface of the nozzle can cover the tobacco falling with the rotation of the rake teeth to the greatest extent, thereby improving the efficiency and uniformity of glycerin spraying. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a tobacco-based smoke-generating agent addition device provided in an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of a vacuum stirring chamber in a tobacco-based smoke-generating agent addition device provided in an embodiment of the present invention;

[0037] In the diagram: 11. Glycerin tank; 12. Ethanol tank; 13. Washing solution tank; 14. Air filter; 15. Multi-way switching valve; 16. Inlet pipeline; 17. Inlet flow meter; 18. Suction pump; 21. Emulsifying agitator; 22. Tank pressure gauge; 23. Tank pressure transmitter; 30. Branch solenoid valve; 31. High-pressure gas pipeline; 32. Inlet solenoid valve; 33. Air compressor; 34. Steam pipeline; 35. Steam solenoid valve; 36. 37. Steam generator; 38. Drainage pipeline; 39. Electrically controlled three-way valve; 40. Nozzle; 41. Vacuum mixing chamber; 42. Outer cylinder; 43. Inner cylinder; 44. Chamber door; 45. Roller assembly; 46. Limiting roller; 47. Lifting plate; 48. Rake teeth; 49. Vacuum pump; 40. Drive motor; 41. Waste liquid pipeline; 42. Waste liquid electrically controlled valve; 43. Waste liquid tank; 44. Chamber pressure gauge; 45. Chamber pressure transmitter. Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting this invention. Example 1

[0041] Please see Figure 1 This embodiment provides a tobacco processing-based smoke-generating agent addition device, which consists of a liquid preparation unit, an emulsification unit, a pumping unit, and a mixing unit.

[0042] The liquid preparation unit mainly prepares the liquid to be sprayed. In this embodiment, a mixture of glycerin and ethanol is used to spray tobacco. To address the problem of difficulty in accurately controlling the spray volume in existing spraying operations, which affects tobacco quality, this embodiment refers to… Figure 1 The system includes a multi-way switching valve 15, several storage tanks, and an inlet pipeline 16 equipped with a suction pump 18 and an inlet flow meter 17. The multi-way switching valve 15 comprises a central common channel and four circumferentially arranged sub-channels. The common channel can be connected to or disconnected from different sub-channels by rotating an internal motor, with only one sub-channel connected at a time. Furthermore, since this embodiment uses a mixture of glycerol and ethanol for spraying, a glycerol tank 11 and an ethanol tank 12 are provided for pre-storing glycerol. Considering the subsequent cleaning of the pipeline equipment, a cleaning solution tank 13 pre-filled with cleaning fluid is also provided. Accordingly, in this embodiment, three sub-channels of the multi-way switching valve 15 are connected to the glycerol tank 11, the ethanol tank 12, and the cleaning solution tank 13, respectively, allowing for the extraction of the appropriate liquid into the equipment pipeline as needed. In other embodiments, different numbers of storage tanks and corresponding numbers of multi-way switching valve sub-channels are used depending on the composition of the solution to be sprayed.

[0043] The emulsification unit primarily agitates glycerol to achieve emulsification, thereby improving the absorption of glycerol by tobacco. In this embodiment, the emulsification unit includes an emulsification stirrer 21. For the injection of glycerol and ethanol into the emulsification stirrer 21, see [link to documentation]. Figure 1 In this embodiment, an inlet pipe 16 is provided between the multi-way switching valve 15 and the emulsifying agitator 21. The upstream port of the inlet pipe 16 is connected to the common channel of the multi-way switching valve 15, and the downstream port of the inlet pipe 16 is connected to the top of the emulsifying agitator 21. Liquids are sequentially injected from the top of the emulsifying agitator 21 to improve the maximum mixing capacity and the reliability of subsequent cleaning. Furthermore, an inlet flow meter 17 and a suction pump 18 are sequentially connected from upstream to downstream of the inlet pipe 16. The suction pressure generated by the suction pump 18 is used to extract liquid from the corresponding storage tank, and the volume of extracted liquid is measured by the inlet flow meter 17.

[0044] To achieve automated control of the equipment, a PLC is used as the controller in this embodiment. It is equipped with an analog module to receive and transmit analog data from sensors, etc. Specifically, the multi-way switching valve 15 and the suction pump 18 are electrically connected to the corresponding output ports of the PLC, receiving control commands from the PLC to respectively realize the corresponding connection between the common channel and different sub-channels of the valve body and the extraction of liquid from different tanks. Furthermore, since the inlet flow meter 17 outputs an analog signal, it is electrically connected to the corresponding analog module of the PLC to realize the feedback of flow monitoring data to the PLC.

[0045] When the liquid preparation unit performs liquid preparation, the PLC first controls the multi-way switching valve 15 to switch to the corresponding sub-channel, and then controls the suction pump 18 to extract glycerol or ethanol sequentially according to the set ratio. Specifically, in this embodiment, glycerol is extracted first. When the inlet flow meter 17 measures the set amount of glycerol, the PLC controls the suction pump to stop. Then, the PLC controls the multi-way switching valve 15 to connect to the sub-channel of the ethanol tank 12, and the suction pump continues to work to extract ethanol. During this process, because there is a short section of pipeline between the common channel of the multi-way switching valve 15 and the inlet flow meter 17, after the inlet flow meter 17 measures the set flow volume and the suction pump 18 stops pumping, a small amount of glycerol remains in this section of pipeline. When ethanol is subsequently added, the ethanol solution will push this section of glycerol into the emulsifying stirrer 21, resulting in inaccurate glycerol measurement. Therefore, in this embodiment, considering the unavoidable liquid residue in the inlet pipeline and equipment, which would cause the actual volume of glycerol entering the emulsifying mixer 21 to be less than the measurement data of the inlet flow meter 17, the pipeline between the inlet flow meter 17 and the common channel port of the multi-way switching valve 15 is configured to satisfy L(cm)×S(cm^2)≤6[cm]^3, where L is the length of the pipeline segment and S is the cross-sectional area of ​​the pipeline segment. Thus, the small amount of glycerol remaining in this pipeline segment can offset the liquid residue in the subsequent inlet pipeline and equipment, thereby improving the relative accuracy of the measurement.

[0046] After the ethanol is drawn to the set amount, the PLC controls the suction pump 18 to stop working. At this time, ethanol remains in the inlet pipe, which will also cause the actual amount of ethanol drawn to be inconsistent with the measured value, affecting the measurement accuracy. Therefore, the remaining sub-channel of the multi-way switching valve 15 is connected to the outside air. In order to ensure the cleanliness of the air intake, an air filter 14 is installed at the pipe port corresponding to the sub-channel to purify the air. Then, the multi-way switching valve 15 is controlled to switch to the air channel, and then the suction pump 18 is started to draw a certain amount of air. The air is used to discharge all the residual ethanol liquid in the inlet pipe 16 into the emulsifying stirrer 21, thereby further improving the relative accuracy of the measurement.

[0047] Similarly, the emulsifying agitator 21 is electrically connected to the output port of the PLC controller. After receiving control data from the PLC, it starts the vertical agitator at the top to emulsify and stir the glycerol after the corresponding solutions are completely injected in sequence. In addition, the top of the emulsifying agitator 21 is equipped with a tank pressure gauge 22 and a tank pressure transmitter 23, and the tank pressure transmitter 23 is electrically connected to the analog module of the PLC to provide feedback on the pressure data inside the emulsifying agitator. Since the subsequent glycerol-ethanol mixture needs to be pressurized for injection, the emulsifying agitator 21 must ensure a certain sealing performance. In some other embodiments, to prevent pressure backflow into the inlet pipe 16, an inlet check valve is installed at the downstream end of the inlet pipe 16.

[0048] The pumping unit is used to pump and spray the emulsified glycerol-ethanol mixture. See [link / reference]. Figure 1 It includes an air compressor 33, a steam generator 36, and a drain pipe 37. The air compressor 33 provides air at a certain pressure, which is connected to the top of the emulsifying agitator 21 via a high-pressure air pipe 31, and the high-pressure air pipe 31 is equipped with an intake solenoid valve 32. The air compressor 33 and the intake solenoid valve 32 are controlled by a PLC controller to start and stop the air compressor 33 and to open and close the intake solenoid valve 32. Thus, after emulsification, the high-pressure air pipe 31 pressurizes the emulsifying agitator 21, thereby facilitating the spraying of the mixture under pressure. In addition, the air compressor 33 can also purge the mixture remaining in the emulsifying agitator 21 to prevent residue in the tank, and the purging also breaks up the vacuum mixing chamber.

[0049] A steam generator 36 is used to generate steam and has an internal flow meter to accurately control the steam pumping volume and rate. In this embodiment, the steam generator 36 is connected to the upper part of the emulsifying agitator 21 via a steam pipeline 34 to input steam into the tank of the emulsifying agitator 21. When needed, it performs steam injection of the emulsified glycerol-ethanol mixture, improving injection efficiency and effect. Furthermore, a steam electrically controlled valve 35 is installed in the steam pipeline 34 to control the on / off state of the steam pipeline 34. Similarly, the steam generator 36 and the steam electrically controlled valve 35 are electrically connected to a corresponding PLC controller, which controls the start and stop of the steam generator 36 and the steam electrically controlled valve 35.

[0050] The drain line connects the emulsifying agitator 21 to the mixing unit, enabling the spraying of the emulsified glycerol-ethanol mixture. See also... Figure 1The upstream port of the drain pipe 37 is connected to the bottom of the emulsifying agitator 21 to facilitate the complete outflow of the mixture, and the downstream port of the drain pipe 37 is equipped with a nozzle 39 for uniform spraying of the mixture. An electrically controlled valve is also installed in the drain pipe. Furthermore, in this embodiment, to achieve functional versatility of the tobacco glycerin addition equipment, see [link to relevant documentation]. Figure 1 A steam branch is provided between the steam pipeline 34 and the drain pipeline 37. This steam branch is equipped with a branch electrically controlled valve 30, and is connected to the drain branch via a three-way valve. Specifically, in this embodiment, the three-way valve is an electrically controlled three-way valve 38. Through this steam branch, the steam generator can be directly connected to the subsequent vacuum mixing chamber, allowing steam to be introduced and enabling the rehumidification of tobacco within the chamber.

[0051] The mixing unit includes a vacuum stirring chamber 41, which can create a vacuum environment to facilitate the smooth and efficient entry of glycerin into the tobacco, improving the glycerin injection effect. Furthermore, stirring enhances the uniformity of the glycerin injection mixture. Specifically, to achieve the vacuum environment within the vacuum stirring chamber 41, in this embodiment, see... Figure 1 The vacuum mixing chamber is equipped with a vacuum pump 42, which draws the chamber into a vacuum. Furthermore, a waste liquid pipeline 44 is located at the bottom of the vacuum mixing chamber 41, with the other end connected to a waste liquid tank 46. A waste liquid electrically controlled valve 45 is installed in the waste liquid pipeline to control its opening and closing, ensuring reliable collection of cleaning waste liquid during subsequent cleaning of the vacuum mixer. In some other embodiments, a one-way valve is installed at the upstream end of the waste liquid pipeline 44 to ensure unidirectional flow of liquid in the pipeline, preventing backflow of waste liquid into the vacuum mixing chamber 41 under pressure. In this embodiment, the vacuum mixing chamber 41 is also equipped with a chamber pressure gauge 47 and a chamber pressure transmitter 48 to monitor the pressure inside the chamber and reflect the pressure holding status.

[0052] See Figure 2The vacuum stirring chamber 41, for achieving the stirring effect, includes an outer cylinder 411 with one end open and relatively fixed, an inner cylinder 412 coaxially arranged with the outer cylinder 411 and rotatable relative to the outer cylinder 411, and a chamber door 413 for sealing the open end face of the outer cylinder 411. Through the coaxial nesting between the outer cylinder 411 and the inner cylinder 412, a vacuum environment is constructed and maintained by the well-sealed outer cylinder 411, and the relative rotation of the inner cylinder 412 relative to the outer cylinder 411 achieves the agitation and stirring of the tobacco inside. In this embodiment, the edge of the chamber door 413, which matches the open end of the outer cylinder 411, is provided with several clamps. Each clamp is used to achieve a reliable connection between the chamber door 413 and the outer cylinder 411, and the surface of the chamber door 413 in contact with the outer cylinder 411 is provided with a sealing ring to ensure its airtightness after sealing, preventing air leakage and cavitation. The door 413 is movably located at the outer cylinder 411 and can rotate in multiple directions, thus facilitating the closing and opening operations of the outer cylinder 411.

[0053] To achieve relative rotation between the inner cylinder 412 and the outer cylinder 411, in this embodiment, a drive motor 43 is provided outside the vacuum mixing chamber 41 to participate in the rotation. Figure 1 The drive motor 43 serves as the power source for stirring. See also... Figure 2 Two roller groups 414 are symmetrically arranged on the bottom wall of the outer cylinder 411. Each roller group 414 includes a roller shaft and at least two rollers coaxially arranged with the roller shaft. Each roller is in contact with the inner cylinder, and the inner cylinder 412 is rotated by friction between the rollers. Specifically, in this embodiment, the roller shaft of one roller group 414 is magnetically connected to the drive motor 43 through a magnetic drive, thereby avoiding the adverse effect on the sealing of the vacuum mixing chamber caused by direct connection between the two. The roller group with this shaft is the driving roller, and the other roller group is the driven roller. While maintaining the coaxial arrangement between the inner cylinder 412 and the outer cylinder 411, the relative rotation of the inner cylinder 412 with respect to the outer cylinder 411 is achieved. In addition, in this embodiment, in order to avoid the inner cylinder 412 from moving in the axial direction, a limiting roller 415 is provided on the symmetrical plane of the two roller sets 414 and near the opening of the inner cylinder 412 to limit the inner cylinder 412. The limiting roller 415 abuts against the inner cylinder 412, thereby preventing the inner cylinder 412 from moving in its axial direction.

[0054] Furthermore, to facilitate the uniform spraying of the emulsified glycerol-ethanol mixture onto the tobacco, at least three lifting plates 416 are arranged in a circumferential array along the inner wall of the inner cylinder 412. As the inner cylinder 412 rotates, the lifting plates 416 lift and tumble the tobacco inside, thereby spraying it while tumbling to improve the uniformity of spraying. In this embodiment, to ensure the tumbling effect of the lifting plates 416, several rake teeth 417 are arranged at equal intervals along the top of the lifting plates. Each rake tooth 417 is oriented towards the central axis of the inner cylinder and has a certain length, thereby lifting more tobacco and improving the tumbling efficiency of the tobacco. The shortest distance from the end of the rake tooth 417 to the inner wall of the inner cylinder 412 is within the range of [0.3R, 0.7R], where R is the radius of the inner cylinder. This avoids collisions between the rake teeth and the nozzle while ensuring that the rake teeth can lift an appropriate amount of tobacco, avoiding the problems of uneven spraying caused by lifting too much tobacco and low spraying efficiency caused by lifting too little tobacco.

[0055] Since the nozzle 39 needs to penetrate deep into the inner cylinder 412 so that the mixture can be sprayed onto the tobacco, in this embodiment, a through hole is provided at the center of the closed end side of the inner cylinder 412. The nozzle 39 passes through the through holes on the closed end sides of the outer cylinder 411 and the inner cylinder 412 in sequence to extend into the space of the inner cylinder 412. A sealing structure is provided at the contact point between the nozzle 39 and the outer cylinder 411 to ensure the airtightness of the chamber and prevent pressure leakage from this point. See also... Figure 2 In this embodiment, the nozzle 39 is positioned at the middle section of the inner cylinder, perpendicular to the axial direction of the inner cylinder, to avoid the problem of excessive spraying on one side and insufficient spraying on the other side due to deviation. Considering the friction between tobacco and parabolic resistance, the corresponding angle between the nozzle orientation and the horizontal plane is set to 140° to 150°, so that the nozzle 39 can achieve the maximum surface spraying operation of large areas of tobacco during the process of tobacco being picked up and falling. If this angle is too large or too small, it will lead to excessive spraying of tobacco on the upper or lower part, thereby reducing the spraying efficiency and the final spray uniformity.

[0056] After placing a suitable amount of tobacco into the inner cylinder 412 of the vacuum mixing chamber, the opening is sealed with a matching sealing plate to prevent tobacco from falling out during the rotation of the inner cylinder. The inner cylinder and the sealing plate are detachably connected using snap-fit ​​mechanisms. Then, the chamber door 413 is closed, and the heating device at the outer cylinder is activated. In this embodiment, an electric heating blanket covered with insulation material is wrapped around the outside of the outer cylinder to ensure sufficient absorption of the mixed liquid by the tobacco. The vacuum pump 42, controlled by the PLC, then extracts the mixture, based on feedback from the chamber pressure transmitter 48, until the set vacuum pressure is reached within the vacuum mixing chamber. Then, the PLC controls the start of the drive motor 43, and the inner cylinder begins to rotate relative to the outer cylinder. At the same time, the electrically controlled three-way valve 38 of the drain pipe, as well as the air compressor 33 and the air intake electrically controlled valve 32, are opened. The emulsified glycerol-ethanol mixture, which has been prepared and emulsified in the emulsifying agitator 21, is driven by a certain pressure of gas and sprayed through the drain pipe to the nozzle. The inner cylinder rotates while spraying until the liquid is completely sprayed. After a delay, the air compressor is turned off, allowing the air compressor to purge the emulsifying agitator and blow the residual liquid into the drain pipe 37. When no liquid is ejected from nozzle 39, the PLC is controlled to close the electronically controlled three-way valve 38, air compressor 33, and air intake valve 32, maintaining pressure in the vacuum mixing chamber 41 for at least 3 minutes. During this pressure-maintaining process, the inner cylinder continues to rotate at a relatively slow speed. After the pressure-maintaining process is completed, the electronically controlled three-way valve 38, air compressor 33, and air intake valve 32 are restarted to break up the vacuum in the vacuum mixing chamber 41. During this process, the air ejected from the nozzle can further agitate the mixed liquid that has not been fully absorbed by the tobacco surface, and in conjunction with the rotation of the inner cylinder, further promote the uniform mixing of the liquid and tobacco. Once the vacuum mixing chamber 41 reaches atmospheric pressure, the rotation of the inner cylinder is stopped, and the electronically controlled three-way valve 38, air compressor 33, and air intake valve 32 are closed. The tobacco is then removed.

[0057] When cleaning the equipment pipeline, the multi-way switching valve 15 is switched to the sub-channel connecting the cleaning liquid tank 13. Then, a certain amount of cleaning liquid is drawn into the emulsifying agitator by the suction pump 18. Then, the multi-way switching valve 15 is switched to the air channel, and a certain amount of air is drawn through the air filter 14. All the cleaning liquid in the liquid inlet pipeline is discharged into the emulsifying agitator 21. Then, the emulsifying agitator is started to stir. Then, the air compressor 33 is started and the air inlet solenoid valve 32 and the solenoid three-way valve 38 are opened so that the cleaning liquid is sprayed into the vacuum mixing chamber 41 through the drain pipeline and the nozzle 39 for cleaning. At this time, the drive motor is started so that the inner cylinder rotates. In this embodiment, several small holes are opened on the circumference of the inner cylinder wall. Through the rotation of the inner cylinder, the cleaning liquid is thrown to the inner wall of the outer cylinder under the action of centrifugal force and flows along the inner wall of the outer cylinder to the waste liquid pipeline inlet at the bottom of the outer cylinder. The waste liquid solenoid valve 45 is opened to collect the cleaning waste liquid, thereby realizing the cleaning operation of the equipment pipeline. Example 2

[0058] This embodiment provides a method for adding a smoking agent based on tobacco processing, applied to the tobacco processing-based smoking agent adding device described in Embodiment 1, and specifically includes the following steps:

[0059] (1) A liquid inlet pipeline with a corresponding liquid inlet flow meter and a suction pump is used to connect the common channel of the multi-way switching valve to the emulsifying stirrer, and each sub-channel of the multi-way switching valve is connected to the corresponding glycerol tank, ethanol tank, washing liquid tank and air filter respectively.

[0060] In this embodiment, based on the miscibility of glycerol and ethanol, a mixture of glycerol and ethanol is used to spray tobacco. Therefore, a quantitative preparation of the glycerol and ethanol mixture is required before spraying.

[0061] (2) Control the multi-way switching valve to switch to the sub-channel corresponding to the glycerin tank, start the suction pump until the inlet flow meter measures the set glycerin volume and then stop.

[0062] In this embodiment, glycerol is first extracted during the preparation of the mixture. (See [link to relevant documentation]). Figure 1 The control valve 15 is switched to the corresponding sub-channel of the glycerin tank 11, and then the suction pump 18 is started. The timing of the suction pump 18 is controlled according to the real-time metering data of the inlet flow meter 17, so that the reading of the inlet flow meter 17 is consistent with the set amount of glycerin, thereby completing the glycerin dispensing operation.

[0063] (3) Control the multi-way switching valve to switch to the sub-channel corresponding to the ethanol tank, start the suction pump until the inlet flow meter measures the set ethanol volume and then stop.

[0064] Then, ethanol is used. The multi-way switching valve 15 is switched to the corresponding sub-channel of the ethanol tank 12, and then the suction pump 18 is started to draw ethanol from the ethanol tank 12 into the emulsifying stirrer 21. Since glycerol and ethanol are miscible, the subsequent ethanol extraction can flush the residual glycerol in the inlet pipeline and device to a certain extent, thereby improving the accuracy and reliability of the mixture preparation.

[0065] Furthermore, the pipeline between the multi-way switching valve 15 and the inlet flow meter 17 is initially filled with glycerol. Although this section of glycerol is pushed into the emulsifying stirrer 21 by the subsequent ethanol, due to the relatively viscous nature of glycerol, even after rinsing with ethanol from the inlet pipeline, a certain amount of glycerol residue remains in the inlet pipeline and the device. However, since the pipeline capacity between the multi-way switching valve 15 and the inlet flow meter 17 is reasonably limited (see Example 1), the amount of glycerol residue matches the pipeline capacity between the multi-way switching valve 15 and the inlet flow meter 17, thereby further improving the accuracy of the mixed solution preparation.

[0066] During the operation of the suction pump 18, the inlet flow meter 17 measures the volume of ethanol until the inlet flow meter reading 7 reaches the set ethanol demand, at which point the suction pump 18 is shut down to complete the ethanol extraction operation.

[0067] (4) Control the multi-way switching valve to switch to the sub-channel corresponding to the air filter, start the suction pump until all the liquid in the liquid inlet pipeline is discharged to the emulsifying agitator and then stop.

[0068] After the ethanol extraction is complete, some ethanol remains in the inlet pipe 16, which causes the actual ethanol intake in the emulsifying agitator 21 to be inconsistent with the measurement data of the inlet flow meter 17. Therefore, in this embodiment, after the ethanol extraction is complete, the multi-way switching valve 15 is switched to the sub-channel corresponding to the air filter 14, and then the suction pump 18 is started to extract a certain amount of air, which pushes the remaining ethanol in the inlet pipe 16 into the emulsifying agitator 21. In step (3), at the initial moment of the ethanol extraction step, the pipeline between the multi-way switching valve 15 and the inlet flow meter 17 is filled with glycerin. When the ethanol extraction begins, the ethanol pushes the glycerin in this section of the pipeline to flow, causing the inlet flow meter 17 to measure the ethanol intake in advance. This measurement data includes the volume of glycerin in the pipeline between the multi-way switching valve 15 and the inlet flow meter 17. As a result, when the inlet flow meter 17 finishes measuring, the actual ethanol intake is less than the measurement value of the inlet flow meter 17. The difference between the two is the capacity of the pipeline between the multi-way switching valve 15 and the inlet flow meter 17. At the initial moment of this step, the pipeline between the multi-way switching valve 15 and the inlet flow meter 17 is filled with ethanol. Therefore, when all the ethanol in the inlet pipeline is pushed into the emulsifying stirrer 21 by air, the ethanol in the pipeline between the multi-way switching valve 15 and the inlet flow meter 17 just makes up for the part of the actual ethanol intake that is less than the measurement value of the inlet flow meter 17, ensuring that the ethanol intake is exactly consistent with the set value, thereby ensuring the accuracy and reliability of the mixture preparation.

[0069] Furthermore, in this embodiment, to ensure that all the liquid in the inlet pipe is pushed into the emulsifying agitator 21, the inlet flow meter reading is greater than H×B when the suction pump correspondingly draws in air, where H is the length of the inlet pipe 16 and B is the cross-sectional area of ​​the inlet pipe. Once the reading on the inlet flow meter 17 exceeds the set value, indicating that all the liquid in the inlet pipe 16 has been pushed into the emulsifying agitator 21, the suction pump 18 is turned off.

[0070] (5) Place a certain amount of tobacco into the inner cylinder of the vacuum mixing chamber, which can rotate coaxially with the outer cylinder, and close the chamber door of the vacuum mixing chamber corresponding to the outer cylinder. Start the emulsifying stirrer to stir the mixture in the tank until the glycerin is emulsified. At the same time, start the vacuum pump connected to the vacuum mixing chamber to create a vacuum inside the chamber.

[0071] See Figure 1The vacuum mixing chamber is used to create a vacuum environment and agitate the tobacco to ensure that the mixture is evenly mixed with the tobacco, thus ensuring the desired liquid addition effect. In this step, the weighed tobacco is first placed into the inner cylinder 412 of the vacuum mixing chamber. When placing the tobacco into the inner cylinder 412, it is evenly spread at the bottom of the inner cylinder 412, ensuring its top surface is horizontal. After the tobacco is placed in the inner cylinder 412, a cover plate matching the port of the inner cylinder 412 is used to seal the inner cylinder using snaps arranged around its outer circumference. The chamber door 413 is then closed, and the vacuum pump 42 is started to evacuate the vacuum mixing chamber to a vacuum level. Specifically, in this embodiment, see... Figure 1 A chamber pressure transmitter 48, which is connected to the inside of the chamber, is installed at the outer cylinder 411 of the vacuum mixing chamber. The pressure data of the chamber pressure transmitter 48 is used to control the vacuum pump to stop, so that the chamber reaches the set vacuum pressure.

[0072] In addition, in this embodiment, in order to ensure that the temperature inside the vacuum mixing chamber can reach the optimal value for tobacco to absorb glycerin, an electric heater is also wrapped around the outer cylinder 411 of the vacuum mixing chamber. The electric heater is started at the same time as the vacuum pump 42 is started to heat the vacuum mixing chamber. In this embodiment, the vacuum mixing chamber is also equipped with a temperature transmitter. The timing for turning off the electric heater is determined based on whether the temperature transmitter data is consistent with the set value.

[0073] When the vacuum pump 42 is started, the emulsifying stirrer 21 is also started to stir the mixture until the glycerol is emulsified. The emulsifying stirrer 21 is equipped with a vertical strip window through which the stirring situation can be observed.

[0074] (6) Control the start of the air compressor and steam generator that are respectively connected to the emulsifying agitator, and control the opening of the drain pipe that connects the emulsifying agitator and the vacuum mixing chamber and has a nozzle at the downstream end; at the same time, start the drive motor to drive the inner cylinder to rotate relative to the outer cylinder.

[0075] Once the temperature and pressure inside the vacuum mixing chamber reach the set values ​​and the emulsifying agitator 21 has emulsified the glycerol, the air compressor 33 and steam generator 36 are started. The air compressor 33 pressurizes the mixture, and steam is ejected through the nozzle. Simultaneously, the electrically controlled three-way valve 38 is opened to open the drain pipe 37. The emulsified glycerol-ethanol mixture is then atomized and sprayed from the nozzle 39 through the pressurized steam ejection. Furthermore, the drive motor 43 is also started simultaneously to rotate the inner cylinder 412 relative to the outer cylinder 411, thereby ensuring the uniformity of the mixture's spraying.

[0076] In other embodiments, in order to further improve the uniformity of the mixture between the liquid and the tobacco, and improve the absorption efficiency and effect of the tobacco, after the drain pipe 37 is opened for a certain period of time, it is simultaneously turned off along with the air compressor 33 and the steam generator 36. At the same time, the vacuum pump 42 is started again to extract the environment inside the vacuum mixing chamber to the set vacuum pressure, thereby restoring the pressure change inside the chamber caused by the spraying of the liquid. After maintaining the pressure for at least 30 seconds, the air compressor 33, the steam generator 36 and the drain pipe 37 are started and opened again. This process is repeated until the liquid in the emulsifying mixer 21 is completely sprayed.

[0077] (7) After the mixture in the emulsifying mixer has been sprayed, wait at least 10 seconds before turning off the air compressor, steam generator and drain line; then maintain pressure in the vacuum mixing chamber for at least 3 minutes.

[0078] After the mixture in the emulsifying mixer 21 is sprayed out, residual mixture remains on the inner wall of the mixer 21, which can cause discrepancies between the actual sprayed dosage and the set measurement, resulting in a deviation in the final absorption of tobacco. Therefore, in this embodiment, after the mixture in the emulsifying mixer 21 is sprayed out, the air compressor 33, steam generator 36, and drain line 37 are turned off after a delay of at least 10 seconds. The compressed air generated by the air compressor 33 is used for purging, ensuring that the residual mixture in the emulsifying mixer 21 completely enters the vacuum mixing chamber and mixes with the tobacco. During this process, the inner cylinder 412 of the vacuum mixing chamber rotates continuously to prevent uneven mixing of the emulsified glycerin and tobacco. In other embodiments, the steam generator 36 is turned off earlier after the mixture in the emulsifying mixer 21 is sprayed out, delaying the shutdown of the air compressor 33 and drain line. After purging is completed and the air compressor 33, steam generator 36, and drain line 37 are all turned off, the vacuum mixing chamber is pressurized for at least 3 minutes to ensure maximum glycerin absorption by the tobacco.

[0079] (8) Start the air compressor and connect the drain pipe to break up the vacuum mixing chamber until the pressure inside the vacuum mixing chamber reaches atmospheric pressure, then stop the drive motor.

[0080] After the vacuum mixing chamber has been pressurized, the tobacco can be removed. However, since the vacuum mixing chamber is in a vacuum state, it is necessary to break the vacuum first. In this embodiment, the vacuum mixing chamber is broken by an air compressor 33. Specifically, the air compressor 33 is started and the electrically controlled three-way valve 38 in the drain pipe 37 is opened to make the drain pipe 37 open. The air pressure of the air compressor 33 is controlled to be no more than 0.35 MPa to ensure the efficiency and safety of the breaking process. After the pressure in the vacuum mixing chamber reaches atmospheric pressure, the air compressor 33, the electrically controlled three-way valve 38, and the drive motor 43 are turned off.

[0081] (9) After opening the vacuum mixing chamber and taking out the tobacco, close the chamber door.

[0082] (10) Control the multi-way switching valve to switch to the sub-channel corresponding to the washing liquid tank, start the suction pump to draw a certain amount of cleaning liquid into the emulsifying agitator and then stop.

[0083] After the tobacco is mixed with glycerin, a certain amount of residue remains in the equipment pipelines and components. To facilitate future use and avoid affecting the accuracy of subsequent measurements, a cleaning operation is performed on the equipment pipelines and components in this embodiment. First, the multi-way switching valve 15 is switched to the sub-channel corresponding to the washing liquid tank 13. Then, the suction pump 18 is started to draw a certain amount of cleaning liquid into the emulsifying stirrer 21, thereby cleaning the residue in the inlet pipeline 16, the inlet flow meter 17, and the suction pump 18.

[0084] (11) Control the multi-way switching valve to switch to the sub-channel corresponding to the air filter, start the suction pump until all the liquid in the inlet pipeline is discharged to the emulsifying agitator and then stop.

[0085] After the cleaning fluid is extracted, a certain amount of cleaning fluid will remain in the inlet pipe 16, affecting subsequent use. Therefore, in this embodiment, the multi-way switching valve 15 is controlled to switch to the sub-channel corresponding to the air filter 14, and then the suction pump 18 is started to extract a certain amount of air. The cleaning fluid in the inlet pipe 16 is completely discharged into the emulsifying agitator 21 through the air, and then the suction pump 18 is stopped. In this way, the cleaning and emptying of the inlet pipe 16 are achieved.

[0086] (12) After the emulsifying agitator is started and stirred for a certain period of time, the air compressor is started to inject compressed air into the emulsifying agitator, and then the drain pipe is opened and the drive motor is started to drive the inner cylinder to rotate; at the same time, the waste liquid pipe at the bottom of the outer cylinder of the vacuum mixing chamber is opened, and the cleaning waste liquid is guided through the waste liquid pipe to the waste liquid tank at the end of the waste liquid pipe.

[0087] After the cleaning solution has completely entered the emulsifying agitator 21, the agitator 21 is started to stir, thereby cleaning the walls of the agitator 21 through the movement of the cleaning solution. The agitator 21 is stopped after a certain period of time, and then the air compressor 33 is started to inject compressed air into the agitator 21. The compressed air then discharges the cleaning waste liquid through the drain pipe 37 to the vacuum mixing chamber, cleaning the vacuum mixing chamber and enabling the reuse of the cleaning solution. In some other embodiments, while the agitator 21 is stirring the cleaning solution inside, the steam generator 36 is simultaneously started to supply steam into the agitator 21, thereby enhancing the cleaning effect through the heat contained in the steam itself.

[0088] The control opens the electrically controlled three-way valve 38, allowing the cleaning fluid to enter the vacuum mixing chamber through the drain pipe 37, and simultaneously starts the drive motor 43, causing the inner cylinder of the vacuum mixing chamber to rotate. This, combined with the spraying from the nozzles and the rotation of the inner cylinder 412, cleans the inner cylinder. Furthermore, in this embodiment, the inner cylinder 412 has several small through-holes arranged circumferentially on its wall. When the inner cylinder 412 rotates, under centrifugal force, the cleaning fluid is thrown through these small through-holes to the outer cylinder wall, cleaning it and collecting at the bottom of the outer cylinder wall. Simultaneously, when the drive motor 43 is started, the waste liquid electrically controlled valve 45 is opened, allowing the cleaning waste liquid to collect in the waste liquid tank 46 through the waste liquid pipe 44.

[0089] (13) After the cleaning liquid in the emulsifying agitator is completely drained, keep the air compressor running until there is no residual liquid in the drain line and the inner cylinder is dry, then turn off the air compressor and drive motor.

[0090] After the cleaning liquid in the emulsifying agitator 21 is completely drained, a certain amount of cleaning liquid remains in the drain pipe and vacuum mixing chamber. Therefore, the air compressor 33 is kept running to purge the emulsifying agitator 21 and drain pipe 37 with compressed air to prevent cleaning liquid residue from remaining. Gas is also sprayed through nozzle 39 to accelerate the evaporation of the cleaning liquid in the vacuum mixing chamber, shortening the drying time. In some other embodiments, the electric heater included on the outer cylinder 411 is also activated simultaneously to accelerate the drying of the vacuum mixing chamber. Once there is no residual liquid in the drain pipe 37 and the vacuum mixing chamber is dry, the air compressor 33 and drive motor 43 are turned off.

[0091] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A tobacco process-based smoking agent adding device, characterized by, The device comprises a liquid preparation unit and a mixing unit; the liquid preparation unit comprises a multi-way switching valve, an air filter, liquid storage tanks, a liquid inlet pipeline, a liquid inlet flowmeter and a suction pump; the mixing unit comprises a vacuum stirring bin; the multi-way switching valve is provided with a common channel and a plurality of sub-channels; the air filter and the liquid storage tanks are connected with the sub-channels correspondingly; the liquid storage tanks comprise a glycerol tank storing glycerol; one end of the liquid inlet pipeline is connected with the common channel; the liquid inlet flowmeter and the suction pump are arranged on the liquid inlet pipeline in sequence; the suction pump delivers materials to the vacuum stirring bin; The liquid storage tanks further comprise an ethanol tank storing ethanol and a washing liquid tank storing washing liquid; The pipe between the inlet flow meter and the common passage port satisfies LxS≤6cm 3 where L is the length of the pipe and S is the cross-sectional area of the pipe. The device further comprises an emulsification unit and a pumping unit; the emulsification unit comprises an emulsification stirrer; the inlet of the emulsification stirrer is connected with the other end of the liquid inlet pipeline; the pumping unit comprises an air compressor, a steam generator, a liquid discharge pipeline and a nozzle; the air compressor is connected with the inlet of the emulsification stirrer through a high-pressure gas pipeline; the steam generator is connected with the inlet of the emulsification stirrer through a steam pipeline; one end of the liquid discharge pipeline is connected with the outlet of the emulsification stirrer; the other end of the liquid discharge pipeline is connected with the vacuum stirring bin; the nozzle is arranged on the other end of the liquid discharge pipeline and penetrates the center of the space in the vacuum stirring bin; the nozzle is arranged at a certain angle with the horizontal plane; The emulsification stirrer is provided with a tank pressure gauge and a tank pressure transmitter; an air inlet electric control valve is arranged on the high-pressure gas pipeline; a steam electric control valve is arranged on the steam pipeline; an electric control three-way valve is arranged on the liquid discharge pipeline; a steam branch is arranged between the electric control three-way valve and the steam pipeline; a branch electric control valve is arranged on the steam branch; The vacuum stirring bin is provided with a vacuum pump, a temperature transmitter, a bin pressure gauge and a bin pressure transmitter; the vacuum stirring bin comprises an outer cylinder, an inner cylinder, a sealing plate and a bin door; the inner cylinder is coaxial with the outer cylinder and can rotate relative to the outer cylinder; the outer cylinder is wrapped with an electric heater; a plurality of small holes are arranged on the inner cylinder; the same end of the outer cylinder and the inner cylinder is open; the sealing plate and the bin door are detachably connected with the opening of the inner cylinder and the opening of the outer cylinder respectively; at least three scraping plates are evenly arranged on the inner cylinder along the cylinder wall; a plurality of rake teeth with a certain length are evenly arranged on the scraping plates along the plate body and towards the central axis of the inner cylinder; The device further comprises a driving motor and roller sets; the driving motor is arranged outside the vacuum stirring bin; the roller sets are symmetrically arranged at the bottom inner wall of the outer cylinder; each roller set comprises a roller shaft and at least two rollers coaxially arranged on the roller shaft; the roller shaft of one roller set is magnetically connected with the driving motor through a magnetic force transmission device; each roller is in contact with the inner cylinder; The device further comprises a waste liquid tank, a waste liquid pipeline and a waste liquid electric control valve; the waste liquid tank is connected with the vacuum stirring bin through the waste liquid pipeline; the waste liquid electric control valve is arranged on the waste liquid pipeline.

2. A tobacco processing-based smoking agent adding method applied to the tobacco processing-based smoking agent adding apparatus of claim 1, characterized by, The device comprises the following steps: Control the multi-way switching valve to switch to the sub-channel corresponding to the glycerol tank; start the suction pump; stop the suction pump after the liquid inlet flowmeter measures the set glycerol volume; Control the multi-way switching valve to switch to the sub-channel corresponding to the ethanol tank; start the suction pump; stop the suction pump after the liquid inlet flowmeter measures the set ethanol volume; Control the multi-way switching valve to switch to the sub-channel corresponding to the air filter; start the suction pump; stop the suction pump after the liquid in the liquid inlet pipeline is completely discharged into the emulsification stirrer; Put a certain amount of tobacco into the inner cylinder of the vacuum stirring bin, close the bin door, and vacuumize the bin, start the emulsification stirrer to stir the mixture in the tank until the glycerol is emulsified; Start the air compressor and the steam generator, and turn on the liquid discharge pipeline, start the drive motor to drive the inner cylinder to rotate relative to the outer cylinder; After the liquid discharge pipeline is turned on for a certain period of time, turn off the air compressor, the steam generator, and the liquid discharge pipeline, vacuumize the vacuum stirring bin and maintain the pressure for at least 30 seconds, then start the air compressor and the steam generator and turn on the liquid discharge pipeline, repeat until the mixture in the emulsification stirrer is sprayed completely; Delay for at least 10 seconds, then turn off the air compressor, the steam generator, and the liquid discharge pipeline, and maintain the pressure of the vacuum stirring bin for at least 3 minutes; Start the air compressor and turn on the liquid discharge pipeline to break the vacuum of the vacuum stirring bin until the pressure in the vacuum stirring bin reaches atmospheric pressure, then stop the drive motor; Open the vacuum stirring bin to take out the tobacco, then close the bin door; Control the multi-way switch valve to switch to the sub-channel corresponding to the washing liquid tank, start the suction pump to draw a certain amount of cleaning liquid into the emulsification stirrer, then stop; Control the multi-way switch valve to switch to the sub-channel corresponding to the air filter, start the suction pump to discharge all the liquid in the liquid inlet pipeline into the emulsification stirrer, then stop; After stirring for a certain period of time, start the air compressor to inject compressed air into the emulsification stirrer, turn on the liquid discharge pipeline and start the drive motor to drive the inner cylinder to rotate, turn on the waste liquid pipeline to guide the cleaned cleaning liquid to the waste liquid tank through the waste liquid pipeline; After the cleaning liquid in the emulsification stirrer is completely discharged, keep the air compressor working until there is no residual liquid in the liquid discharge pipeline and the inner cylinder is dry, then turn off the air compressor and the drive motor.

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