Dispersing and homogenizing device for preparing tobacco essence

Abstract

The invention relates to the technical field of tobacco processing equipment, and discloses a tobacco essence preparation, dispersion and homogenization device which comprises a stainless steel rack, a vacuum tank is mounted at the top of the stainless steel rack, a high-shear homogenization emulsifying machine is mounted at the bottom of the vacuum tank, a high-speed homogenization motor is mounted at the driving end of the high-shear homogenization emulsifying machine, and a high-speed homogenization motor is mounted at the driving end of the high-shear homogenization emulsifying machine. A stirring assembly is arranged at the top of the vacuum tank body, a multi-point temperature control assembly is arranged in the vacuum tank body, a vacuum condensation assembly is arranged at the top of the vacuum tank body, and a vacuum pressure sensor is mounted at the top of the vacuum tank body; a homogenizer outlet temperature sensor is mounted at an outlet of the high-shear homogenizing emulsifying machine. Through cooperative intelligent control of multiple sensors, the technical problems of over-boiling, thermosensitive component degradation and foam overflow easily occurring in the vacuum homogenizing process are solved, and the automation level and the stability of product quality are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing equipment technology, specifically to a device for preparing, dispersing, and homogenizing tobacco flavorings. Background Technology

[0002] In the production of tobacco flavorings, high-shear homogenizing emulsifiers are typically used to ensure that various flavorings, solvents, and additives are mixed evenly and achieve a stable emulsified or dispersed state. These devices often operate under vacuum to prevent material oxidation, avoid loss of volatile components, and facilitate degassing and elimination of air bubbles in the material.

[0003] However, existing homogenizing equipment still has many shortcomings when processing complex materials such as tobacco flavorings. The high-shear homogenization process itself generates a large amount of heat, especially in the high-speed shear zone of the homogenizer's stator and rotor, resulting in significant localized high temperatures. Simultaneously, when the equipment operates under vacuum, the boiling point of the material decreases considerably. Existing control systems often lack coordinated monitoring of vacuum (pressure) and localized temperature, making it impossible to predict the instantaneous boiling point of the material. Therefore, the material is highly susceptible to violent boiling (overboiling) at the homogenizer outlet due to localized overheating, which not only compromises material stability but also seriously affects process safety.

[0004] In addition, tobacco flavorings contain a large number of heat-sensitive components. Existing temperature control methods are usually rather crude and it is difficult to make precise and graded flexible control of shear heat. When the temperature is too high, the only option is often to reduce the speed or stop the machine, which sacrifices production efficiency while protecting the materials.

[0005] Finally, the homogenization and stirring processes in a vacuum environment easily generate a large amount of foam. If this foam is not dealt with in time, it will occupy the effective volume of the tank and may even be sucked into the vacuum pump, causing equipment damage. Traditional equipment mostly relies on manual monitoring through observation windows and manual intervention, lacking automated foam detection and handling capabilities. Therefore, how to achieve coordinated intelligent control of boiling point, thermosensitive threshold, and foam in the vacuum homogenization process is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a tobacco flavoring formulation, dispersion, and homogenization device that solves the problem that existing vacuum homogenization devices cannot automatically and collaboratively control the instantaneous boiling point, thermosensitive threshold, and foam state of materials, which leads to over-boiling, degradation of thermosensitive components, and foam overflow during the homogenization process.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A tobacco flavoring formulation, dispersion, and homogenization device includes a stainless steel frame, a vacuum tank mounted on top of the frame, a high-shear homogenizing emulsifier mounted at the bottom of the vacuum tank, a high-speed homogenizing motor mounted on the drive end of the high-shear homogenizing emulsifier, a stirring assembly mounted on top of the vacuum tank, a multi-point temperature control assembly inside the vacuum tank, a vacuum condensation assembly mounted on top of the vacuum tank, and a vacuum pressure sensor mounted on top of the vacuum tank. A homogenizer outlet temperature sensor is mounted at the outlet of the high-shear homogenizing emulsifier. A foam sensor and a material temperature sensor are mounted inside the vacuum tank, with the foam sensor positioned above the material temperature sensor. A liquid level sensor is mounted on the inner wall of the vacuum tank. An electric regulating valve is mounted on the outside of the cooling medium pipelines of the vacuum tank and the high-shear homogenizing emulsifier. A frequency converter speed controller and a PLC controller are mounted on the stainless steel frame. The PLC controller is configured to receive signals from the vacuum pressure sensor, the homogenizer outlet temperature sensor, and the foam sensor in real time; and based on the signals, coordinate the operation of the variable frequency speed controller and the electric regulating valve to respond to the instantaneous boiling point, thermistor threshold, and foam state of the material.

[0009] Preferably, the stirring assembly includes a stirring motor mounted on a stainless steel frame; a speed reducer is fixedly connected to the output end of the stirring motor, and a frame-type wall scraper is fixedly connected to the output end of the speed reducer, extending into the vacuum tank.

[0010] Preferably, the multi-point temperature control component includes a jacket, which is disposed outside the vacuum tank, and the jacket is provided with a jacket medium inlet and a jacket medium outlet; the high-shear homogenizing emulsifier is provided with a stator cooling jacket; a material external circulation pipeline is connected between the vacuum tank and the high-shear homogenizing emulsifier, and a pipeline-type high-efficiency heat exchanger is installed on the material external circulation pipeline.

[0011] Preferably, the vacuum condensation assembly includes a condenser reflux device, which is disposed at the top of the vacuum tank and has a cooling water inlet and a cooling water outlet; the condenser reflux device is connected to the vacuum pump via a connecting pipeline.

[0012] Preferably, the PLC controller is further configured as follows: Based on the signals from the vacuum pressure sensor and the homogenizer outlet temperature sensor, the instantaneous boiling point of the material is calculated. When the temperature detected by the homogenizer outlet temperature sensor approaches the instantaneous boiling point, the speed of the high-speed homogenizing motor is reduced by the variable frequency speed controller. When the temperature detected by the outlet temperature sensor of the homogenizer is close to a preset thermistor threshold, the cooling medium flow rate of the multi-point temperature control component is increased first through the electric regulating valve; when the cooling medium flow rate reaches the upper limit and the temperature is still close to the thermistor threshold, the speed of the high-speed homogenizing motor is reduced through the variable frequency speed controller. When the foam sensor detects foam, the high-speed homogenizing motor is stopped by the variable frequency speed controller, and the stirring motor is started to perform physical defoaming.

[0013] Preferably, the outlet of the external material circulation pipeline is provided with a nozzle, and the outlet of the nozzle is located inside the vacuum tank and faces the inner wall of the vacuum tank.

[0014] Preferably, the inlet of the high-shear homogenizing emulsifier is connected to a powder vacuum suction hopper.

[0015] Preferably, the frame-type scraper agitator is equipped with polytetrafluoroethylene scraper blades.

[0016] Preferably, an observation window is provided on the upper part of the side wall of the vacuum tank, and a lighting lamp is installed at the corresponding position outside the observation window for observing the state of the material inside the tank. A safety valve is provided on the top of the vacuum tank.

[0017] Preferably, the stainless steel frame is equipped with multiple omnidirectional casters at its bottom; the external operating area of ​​the stainless steel frame is equipped with an emergency stop button and a touch screen human-machine interface, and the PLC controller is electrically connected to the touch screen human-machine interface.

[0018] The beneficial effects of this invention are as follows: 1. This invention uses a PLC controller to receive signals from a vacuum pressure sensor and a homogenizer outlet temperature sensor in real time, enabling dynamic calculation of the instantaneous boiling point of the material under the current vacuum level. When the temperature at the highest local temperature point of the material at the homogenizer outlet approaches this boiling point, the PLC controller can immediately reduce the speed of the high-speed homogenizing motor through a variable frequency speed controller, effectively avoiding violent boiling and splashing of the material due to local overheating, and ensuring production stability.

[0019] 2. This invention targets heat-sensitive components in tobacco flavorings. When the temperature sensor at the homogenizer outlet approaches a preset thermistor threshold, the PLC controller first prioritizes increasing the cooling medium flow rate via an electric regulating valve to lower the temperature. Only when cooling reaches its upper limit and temperature control is still insufficient is a secondary protection mechanism activated, which reduces the speed of the high-speed homogenizing motor via a variable frequency speed controller. This step-by-step intelligent control, which prioritizes cooling followed by speed reduction, effectively protects the material's activity while maximizing homogenization efficiency.

[0020] 3. This invention utilizes a foam sensor installed above the liquid level inside the vacuum tank, enabling the PLC controller to promptly detect foam generation. Upon detection, the PLC controller immediately stops the high-speed homogenizing motor, the primary source of foam generation, via a variable frequency speed controller, and simultaneously activates the stirring motor to drive the frame-type scraper agitator for physical defoaming. This effectively prevents foam from overflowing the tank or affecting the stable operation of the vacuum system, achieving automated processing and reducing manual intervention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a perspective view of the present invention; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is a schematic diagram of the top of the vacuum tank of the present invention; Figure 4 This is a schematic diagram of the frame-type scraper agitator of the present invention; Figure 5 This is a schematic diagram of the high-shear homogenizing emulsifier structure of the present invention; Figure 6 This is a schematic diagram of the internal structure of the vacuum tank of the present invention; Figure 7 This is a schematic diagram of the material external circulation pipeline structure of the present invention; Figure 8 This is a schematic diagram of the collaborative control of the PLC controller according to the present invention.

[0023] Legend: 1. Stainless steel frame; 2. Universal casters; 3. Vacuum tank; 4. Jacket; 5. Jacket medium inlet; 6. Jacket medium outlet; 7. Observation window; 8. Lighting; 9. Agitator motor; 10. Frame-type scraper agitator; 11. PTFE scraper blades; 12. Condenser reflux device; 13. Cooling water inlet; 14. Cooling water outlet; 15. Vacuum pump; 16. Safety valve; 17. Connecting pipelines; 18. High-shear homogenizer emulsifier; 19. Powder vacuum hopper; 2 0. Material external circulation pipeline; 21. In-line high-efficiency heat exchanger; 22. PLC controller; 23. Touch screen human-machine interface; 24. Emergency stop button; 25. Material temperature sensor; 26. Liquid level sensor; 27. Vacuum pressure sensor; 28. Homogenizer outlet temperature sensor; 29. ​​Foam sensor; 30. Electric regulating valve; 31. Stator cooling jacket; 32. High-speed homogenizing motor; 33. Variable frequency speed controller; 34. Nozzle; 35. Reducer. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0027] Please see the appendix Figure 1 To be continued Figure 4This invention provides a device for preparing, dispersing, and homogenizing tobacco flavorings, comprising a stainless steel frame 1, a vacuum tank 3 mounted on top of the stainless steel frame 1, a high-shear homogenizer / emulsifier 18 mounted on the bottom of the vacuum tank 3, a high-speed homogenizing motor 32 mounted on the drive end of the high-shear homogenizer / emulsifier 18, a stirring assembly mounted on top of the vacuum tank 3, the stirring assembly including a stirring motor 9 mounted on the stainless steel frame 1; a reducer 35 fixedly connected to the output end of the stirring motor 9, and a frame-type scraper / stirrer fixedly connected to the output end of the reducer 35. The high-shear homogenizing emulsifier 18 is connected to a powder vacuum suction hopper 19 at its inlet. An observation window 7 is provided on the upper side wall of the vacuum tank 3, and a lighting lamp 8 is installed at the corresponding position outside the observation window 7 for observing the state of the material inside the tank. A safety valve 16 is provided on the top of the vacuum tank 3. Multiple universal casters 2 are installed at the bottom of the stainless steel frame 1. An emergency stop button 24 and a touch screen human-machine interface 23 are provided in the external operating area of ​​the stainless steel frame 1. The PLC controller 22 is electrically connected to the touch screen human-machine interface 23.

[0028] Specifically, the omnidirectional casters 2 facilitate the movement and deployment of the equipment within the production workshop. The touch screen human-machine interface 23 serves as the human-machine interaction entry point, used for setting and monitoring process parameters (such as target vacuum degree, temperature threshold, homogenization speed, running time, etc.). The PLC controller 22 is the central control core of the entire device. The frame-type scraper agitator 10 in the mixing assembly is used to achieve low-speed macro-mixing of materials and scraping heat transfer, while the high-shear homogenizer 18 is used for high-speed micro-dispersion emulsification. The powder vacuum suction hopper 19 can use the negative pressure inside the tank to suck powder materials into the tank without dust when the vacuum pump 15 is working. The observation window 7, lighting lamp 8, safety valve 16, and emergency stop button 24 together constitute the equipment's safety protection system.

[0029] Please see the appendix Figure 2 To be continued Figure 5 The vacuum tank 3 is equipped with a multi-point temperature control component, which includes a jacket 4 located outside the vacuum tank 3. The jacket 4 has a jacket medium inlet 5 and a jacket medium outlet 6. The high-shear homogenizing emulsifier 18 is equipped with a stator cooling jacket 31. The vacuum tank 3 and the high-shear homogenizing emulsifier 18 are connected by a material external circulation pipeline 20. A pipeline-type high-efficiency heat exchanger 21 is installed on the material external circulation pipeline 20. The outlet of the material external circulation pipeline 20 is equipped with a nozzle 34, and the outlet of the nozzle 34 is located inside the vacuum tank 3 and faces the inner wall of the vacuum tank 3.

[0030] Specifically, the jacket 4 is used for large-area pre-cooling, heat preservation, or heating of the main material inside the tank; the stator cooling jacket 31 is specifically used for high-precision cooling of the homogenizer stator, directly removing most of the heat generated by the shear heat source; the pipeline high-efficiency heat exchanger 21 actively and efficiently forces cooling of the material during external circulation, with the nozzle 34 spraying towards the inner wall, cooperating with the rotating scraping action of the frame-type wall scraper agitator 10, which can quickly scrape the just-cooled material off the tank wall and forcibly mix it into the main material, greatly improving the heat exchange efficiency and ensuring the uniformity of the overall temperature of the material inside the tank.

[0031] Please see the appendix Figure 3 To be continued Figure 6 The vacuum tank 3 is equipped with a vacuum condensation assembly on its top, which includes a condenser reflux 12. The condenser reflux 12 is located on the top of the vacuum tank 3 and has a cooling water inlet 13 and a cooling water outlet 14. The condenser reflux 12 is connected to the vacuum pump 15 via a connecting pipe 17. A vacuum pressure sensor 27 is installed on the top of the vacuum tank 3. A homogenizer outlet temperature sensor 28 is installed at the outlet of the high-shear homogenizer emulsifier 18. A foam sensor 29 and a material temperature sensor 25 are installed inside the vacuum tank 3, with the foam sensor 29 located above the material temperature sensor 25. A liquid level sensor 26 is installed on the inner wall of the vacuum tank 3. An electric regulating valve 30 is installed on the outside of the cooling medium pipes of the vacuum tank 3 and the high-shear homogenizer emulsifier 18. A variable frequency speed controller 33 and a PLC controller 22 are installed on the stainless steel frame 1.

[0032] Specifically, the PLC controller 22, in conjunction with the real-time pressure signal from the vacuum pressure sensor 27 and the local high-temperature signal from the homogenizer outlet temperature sensor 28, calculates the instantaneous boiling point of the material under this pressure in real time through a built-in algorithm. When the outlet temperature approaches the boiling point, the PLC controller 22 immediately reduces the speed of the high-speed homogenizing motor 32 through the variable frequency speed controller 33, thereby reducing shear heat at the source and preventing the material from overboiling at the homogenizer outlet.

[0033] See appendix Figure 8 The PLC controller 22 compares the temperature of the homogenizer outlet temperature sensor 28 with a preset thermal threshold, such as the degradation temperature of the flavoring components, and prioritizes increasing the cooling medium flow through the electric regulating valve 30 to start the above three-stage cooling system for coordinated cooling. If the cooling flow has reached the upper limit and the temperature continues to approach the threshold, the PLC controller 22 then reduces the speed of the high-speed homogenizer motor 32 through the frequency converter speed controller 33 to achieve flexible temperature control.

[0034] Once the foam sensor 29 detects that the foam has reached a dangerous height, the PLC controller 22 immediately stops the operation of the high-speed homogenizing motor 32 and starts the stirring motor 9. The frame-type scraper stirrer 10 is used to physically break the foam at a low speed. Homogenization is restored after the foam is eliminated.

[0035] The PLC controller 22 is configured to receive signals from the vacuum pressure sensor 27, the homogenizer outlet temperature sensor 28, and the foam sensor 29 in real time; and based on the signals, coordinate the operation of the variable frequency speed controller 33 and the electric regulating valve 30 to respond to the instantaneous boiling point, thermistor threshold, and foam state of the material.

[0036] In a preferred embodiment, the PLC controller 22 is further configured as follows: Based on the signals from the vacuum pressure sensor 27 and the homogenizer outlet temperature sensor 28, the instantaneous boiling point of the material is calculated. When the temperature detected by the homogenizer outlet temperature sensor 28 approaches the instantaneous boiling point, the speed of the high-speed homogenizing motor 32 is reduced by the variable frequency speed controller 33. When the temperature detected by the homogenizer outlet temperature sensor 28 is close to a preset thermistor threshold, the cooling medium flow rate of the multi-point temperature control component is increased first through the electric regulating valve 30; when the cooling medium flow rate reaches the upper limit and the temperature is still close to the thermistor threshold, the speed of the high-speed homogenizer motor 32 is reduced through the variable frequency speed controller 33. When the foam sensor 29 detects foam, the high-speed homogenizing motor 32 is stopped by the variable frequency speed controller 33, and the stirring motor 9 is started to perform physical defoaming.

[0037] Specifically, the PLC controller 22, as the central processing unit of this invention, has a pre-set nonlinear multidimensional critical phase transition prediction model based on energy dissipation theory to replace the traditional single pressure lookup table method. The PLC controller 22 constructs multi-variable collaborative control logic by real-time acquisition of vacuum pressure, motor load current, and speed signals, as detailed below: Dynamic critical point prediction algorithm: This control strategy aims to address the fluid dynamics effects neglected by traditional technologies. Since tobacco flavorings are high-viscosity non-Newtonian fluids, when the high-shear homogenizing emulsifier 18 rotates at high speeds (e.g., 3000 rpm), a drastic fluid dynamic pressure drop (local negative pressure) occurs between the stator and rotor, causing the local instantaneous boiling point inside the stator to be much lower than the theoretical boiling point corresponding to the vacuum pressure sensor 27 at the top of the tank. Therefore, the PLC controller 22 not only collects the signal from the vacuum pressure sensor 27... It also collects the real-time operating current of the high-speed homogenizing motor 32. and real-time rotation speed The PLC controller 22 calculates the local critical boiling point inside the homogenizer in real time using the following shear coupling correction algorithm. : ; in, Boiling point based on the fundamental theory of macroscopic pressure inside the tank; : Fluid dynamic pressure drop coefficient, used to compensate for the local pressure reduction caused by high-speed shear (i.e., the risk of cavitation caused by the Bernoulli effect); rotational speed The higher the pressure, the lower the local pressure. The more pronounced the decline; Viscosity thermal accumulation correction term; PLC controller 22 based on motor current By inferring the instantaneous viscosity of the material, a higher current indicates a higher viscosity, and the frictional heat within the shear gap is more difficult to diffuse, requiring a further reduction in the critical boiling point threshold.

[0038] Dynamic critical point following control: based on the above calculations The PLC controller 22 executes an asymmetric dynamic following strategy. The PLC controller 22 monitors the signal from the homogenizer inlet temperature sensor 28 in real time. when Time (of which) (For dynamic safety margin), PLC controller 22 determines that the current operating condition has entered the cavitation-induced zone. At this time, PLC controller 22 immediately reduces the speed of high-speed homogeneous motor 32 exponentially through variable frequency speed controller 33. The beneficial effect of this control is that it produces a bidirectional safety gain: reducing the speed not only directly reduces the generation of shear heat (suppressing...) (Increase), and more importantly, according to the above algorithm, the rotational speed The reduction will quickly eliminate the hydrodynamic pressure drop, thereby instantly raising the pressure. The numerical value. This regulation mechanism, which slows down the rise in material temperature while actively raising the critical boiling point threshold, can remove the system from the cavitation danger zone more quickly than traditional control, effectively preserving the volatile components of the fragrance.

[0039] Dual-constraint thermal protection control: This control ensures that the material temperature never exceeds the preset thermal threshold. (e.g., fragrance degradation temperature). PLC controller 22 always takes... and The smaller value in the range is taken as the final upper limit target temperature of the system.

[0040] Level 1 response (regulating cooling): when When the target value is approached, the PLC controller 22 first sends a command to the electric regulating valve 30 to gradually increase its opening and increase the total flow rate of the cooling medium of the multi-point temperature control component. Secondary response (speed adjustment): If the electric regulating valve 30 has reached 100% opening and the temperature continues to approach the limit, the PLC controller 22 initiates the secondary response, which reduces the speed of the high-speed homogenizing motor 32 through the variable frequency speed controller 33, ensuring material quality safety at the cost of sacrificing some homogenization efficiency.

[0041] Foam overflow interlock control: This control is a separate safety interrupt procedure.

[0042] Foam detection: When the foam sensor 29 detects a foam contact signal, it immediately sends a high-level trigger signal to the PLC controller 22; Interlock action: After receiving the signal, the PLC controller 22 immediately executes the action: that is, the speed of the high-speed homogenizing motor 32 is reduced to 0 by the frequency conversion speed controller 33 (cut off the foaming source), and the stirring motor 9 is started at the same time, so that the frame scraper agitator 10 runs at a low speed (such as 10-30 RPM) to physically break the bubbles. Delayed recovery: When the signal of the foam sensor 29 disappears and after a preset foam stabilization delay (such as 30 seconds), the PLC controller 22 will automatically restart the high-speed homogenizing motor 32 and restore the previous homogenization process.

[0043] Working principle: When using this device, the operator sets parameters through the touch screen human-machine interface 23 on the external operating area of ​​the stainless steel frame 1. The PLC controller 22 starts running, and the material is added into the vacuum tank 3. The liquid level is monitored by the liquid level sensor 26 installed on the inner wall of the tank. The powder material can be sucked into the high-shear homogenizing emulsifier 18 through the powder vacuum suction hopper 19. The vacuum pump 15 evacuates the vacuum tank 3 through the connecting pipe 17 and the condenser reflux device 12 at the top. The vacuum pressure sensor 27 at the top of the tank monitors the internal pressure in real time. The pressure and cooling medium flow through the jacket 4 outside the vacuum tank 3 and the stator cooling jacket 31 on the high shear homogenizer 18. The homogenization process starts, and the high-speed homogenizer motor 32 drives the high shear homogenizer 18 to run through the frequency converter speed controller 33. At the same time, the stirring motor 9 drives the frame scraper agitator 10, which is equipped with polytetrafluoroethylene scraper blades 11, to rotate inside the tank through the reducer 35. The material can also be extracted through the material external circulation pipeline 20, which is equipped with a pipeline high-efficiency heat exchanger 21, and sprayed back into the tank through the nozzle 34. During operation, the PLC controller 22 receives signals from various sensors in real time and performs coordinated control. Based on the signals from the vacuum pressure sensor 27 and the homogenizer outlet temperature sensor 28, it calculates the instantaneous boiling point of the material. When the outlet temperature approaches the boiling point, the PLC controller 22 reduces the speed of the high-speed homogenizing motor 32 through the variable frequency speed controller 33. When the temperature of the homogenizer outlet temperature sensor 28 approaches the preset thermistor threshold, the PLC controller 22 first increases the flow rate of the cooling medium through the electric regulating valve 30 installed on the cooling medium pipeline. If the flow rate reaches the upper limit and the temperature is still close to the threshold, the speed of the high-speed homogenizing motor 32 is reduced again through the variable frequency speed controller 33. When the foam sensor 29 installed above the liquid surface above the material temperature sensor 25 detects foam, the PLC controller 22 stops the operation of the high-speed homogenizing motor 32 through the variable frequency speed controller 33 and starts the stirring motor 9. The entire process can be monitored through the observation window 7 and the lighting lamp 8, and the safety valve 16 and the emergency stop button 24 ensure operational safety.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A device for preparing, dispersing, and homogenizing tobacco flavorings, comprising a stainless steel frame (1), characterized in that, A vacuum tank (3) is mounted on the top of the stainless steel frame (1). A high-shear homogenizing emulsifier (18) is mounted on the bottom of the vacuum tank (3). A high-speed homogenizing motor (32) is mounted on the drive end of the high-shear homogenizing emulsifier (18). A stirring assembly is provided on the top of the vacuum tank (3). A multi-point temperature control assembly is provided inside the vacuum tank (3). A vacuum condensation assembly is provided on the top of the vacuum tank (3). A vacuum pressure sensor (27) is installed on the top of the vacuum tank (3). A homogenizer outlet temperature sensor is installed at the outlet of the high-shear homogenizing emulsifier (18). Sensor (28), foam sensor (29) and material temperature sensor (25) are installed inside the vacuum tank (3), wherein the foam sensor (29) is located above the material temperature sensor (25); liquid level sensor (26) is installed on the inner wall of the vacuum tank (3); electric regulating valve (30) is installed on the outside of the cooling medium pipeline of the vacuum tank (3) and the high shear homogenizing emulsifier (18); variable frequency speed controller (33) is installed on the stainless steel frame (1); PLC controller (22) is installed on the stainless steel frame (1); The PLC controller (22) is configured to receive signals from the vacuum pressure sensor (27), the homogenizer outlet temperature sensor (28), and the foam sensor (29) in real time; and based on the signals, coordinate the operation of the variable frequency speed controller (33) and the electric regulating valve (30) to respond to the instantaneous boiling point, thermistor threshold, and foam state of the material.

2. The tobacco flavoring preparation, dispersion, and homogenization apparatus according to claim 1, characterized in that, The stirring assembly includes a stirring motor (9), which is mounted on a stainless steel frame (1); a speed reducer (35) is fixedly connected to the output end of the stirring motor (9), and a frame-type wall scraper (10) is fixedly connected to the output end of the speed reducer (35) and extends into the vacuum tank (3).

3. The tobacco flavoring preparation, dispersion, and homogenization apparatus according to claim 1, characterized in that, The multi-point temperature control component includes a jacket (4), which is located outside the vacuum tank (3). The jacket (4) is provided with a jacket medium inlet (5) and a jacket medium outlet (6). The high-shear homogenizing emulsifier (18) is provided with a stator cooling jacket (31). The vacuum tank (3) and the high-shear homogenizing emulsifier (18) are connected by a material external circulation pipeline (20), and a pipeline-type high-efficiency heat exchanger (21) is installed on the material external circulation pipeline (20).

4. The tobacco flavoring preparation, dispersion, and homogenization apparatus according to claim 1, characterized in that, The vacuum condensation assembly includes a condenser reflux device (12), which is located on the top of the vacuum tank (3). The condenser reflux device (12) is provided with a cooling water inlet (13) and a cooling water outlet (14). The condenser reflux device (12) is connected to the vacuum pump (15) through a connecting pipe (17).

5. The tobacco flavoring preparation, dispersion, and homogenization apparatus according to claim 1, characterized in that, The PLC controller (22) is further configured as follows: The instantaneous boiling point of the material is calculated based on the signal from the vacuum pressure sensor (27) and the signal from the homogenizer outlet temperature sensor (28). When the temperature detected by the homogenizer outlet temperature sensor (28) approaches the instantaneous boiling point, the speed of the high-speed homogenizing motor (32) is reduced by the variable frequency speed controller (33). When the temperature detected by the homogenizer outlet temperature sensor (28) is close to a preset thermistor threshold, the cooling medium flow rate of the multi-point temperature control component is increased preferentially through the electric regulating valve (30); When the cooling medium flow rate reaches the upper limit and the temperature is still close to the thermistor threshold, the speed of the high-speed homogeneous motor (32) is reduced by the variable frequency speed controller (33); When the foam sensor (29) detects foam, the high-speed homogenizing motor (32) is stopped by the variable frequency speed controller (33), and the stirring motor (9) is started to perform physical defoaming.

6. The tobacco flavoring formulation, dispersion, and homogenization apparatus according to claim 5, characterized in that, The PLC controller (22) has a preset nonlinear multidimensional critical phase transition prediction model based on energy dissipation theory, which acquires signals from the vacuum pressure sensor (27) in real time. Real-time operating current of high-speed homogeneous motor (32) and real-time rotation speed The local critical boiling point is calculated in real time using a shear coupling correction algorithm. : ； in, Boiling point based on the fundamental theory of macroscopic pressure inside the tank; : Hydrodynamic pressure drop coefficient; : Viscosity thermal accumulation correction term.

7. The tobacco flavoring formulation, dispersion, and homogenization apparatus according to claim 6, characterized in that, Based on the local critical boiling point The PLC controller (22) executes an asymmetric dynamic following strategy to monitor the signal of the homogenizer inlet temperature sensor (28) in real time. when When the PLC controller (22) determines that the current working condition has entered the cavitation induced zone, the PLC controller (22) immediately reduces the speed of the high-speed homogeneous motor (32) exponentially through the variable frequency speed controller (33).

8. The tobacco flavoring preparation, dispersion, and homogenization apparatus according to claim 3, characterized in that, The outlet of the external circulation pipeline (20) is provided with a nozzle (34), the outlet of the nozzle (34) is located inside the vacuum tank (3) and faces the inner wall of the vacuum tank (3).

9. The tobacco flavoring formulation, dispersion, and homogenization apparatus according to claim 1, characterized in that, An observation window (7) is provided on the upper side wall of the vacuum tank (3), and a lighting lamp (8) is installed at the corresponding position outside the observation window (7) for observing the state of the material inside the tank. A safety valve (16) is provided on the top of the vacuum tank (3).

10. The tobacco flavoring formulation, dispersion, and homogenization apparatus according to claim 1, characterized in that, The stainless steel frame (1) is equipped with multiple universal casters (2) at the bottom; the external operating area of ​​the stainless steel frame (1) is equipped with an emergency stop button (24) and a touch screen human-machine interface (23), and the PLC controller (22) is electrically connected to the touch screen human-machine interface (23).

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