Perfuming control system for heating cigarettes

Abstract

The invention discloses a perfuming control system for heating cigarettes, which belongs to the technical field of tobacco processing and comprises a compressed air pipeline system, a perfume conveying pipeline system, a perfuming pipeline system and a control system. Wherein the compressed air pipeline system is divided into two paths after passing through a first electric steering valve, one path is an atomizing perfume compressed air pipeline used for atomizing perfume, and the other path is a feeding compressed air pipeline used for enabling a sheet tow to penetrate through the perfuming cavity; the spice conveying pipeline system comprises a storage tank, a pneumatic diaphragm pump and a sixth electric stop valve; the perfuming pipeline system comprises a perfume tank, a third electric stop valve, a third electric steering valve, a gear pump, a second pressure sensor, a back pressure valve, a first electric stop valve and a perfuming cavity; and the control system comprises a PLC (Programmable Logic Controller) and a control panel. According to the invention, the adaptability of the system and the perfuming uniformity and precision are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco processing, and more specifically, to a flavoring control system for heating cigarettes. Background Art

[0002] As a leading company in the international heated cigarette industry, its main products all show diversified styles and diverse flavor development trends, covering light mint, strong mint, strong original, light original, blueberry, nuts, coffee and other flavors, aiming to attract consumer groups with different preferences and thereby promote further product expansion.

[0003] There are two main types of heating cigarette rolling and splicing processes: one is the disordered heating cigarette processing process. This process first makes the smoking material (such as tobacco, thin sheet or other suitable materials) into a filament, and then uses a traditional flavoring machine to add flavor and store it. In the rolling and splicing stage, a modified traditional cigarette machine is used for rolling and splicing to produce heated cigarettes with different styles and flavors. It is worth noting that the flavoring link in this process adopts a centralized flavoring method. The other is the orderly heating cigarette processing process. This process rewinds the smoking material into a reel. During the production process, a series of fine processes such as unrolling, flattening, pressing and cutting, adding flavor, bundling, cigarette paper wrapping, cigarette cutting, and overlapping are used to produce heated cigarettes with different styles and flavors. Compared with the disordered heating cigarette processing process, the orderly heating cigarette processing process has significant differences from the traditional cigarette processing process in terms of rolling and splicing. Therefore, orderly heated cigarettes have become a hot research topic in the industry in terms of smoke material formulation technology, processing technology, quality control, flavoring technology, rolling and splicing equipment, and adaptability of film base to machines.

[0004] However, in traditional technologies, compressed air systems often have a single function and cannot be quickly switched according to the needs of different production stages. This makes it difficult for the thin tow to enter the fragrance chamber smoothly and quickly, and it is prone to jamming and accumulation, which not only affects the production startup efficiency, but also may cause material damage and increase the defective rate.

[0005] The old technology’s flavoring cavity structure has defects and cannot effectively guide and accelerate the airflow, which will cause insufficient and uneven atomization of the flavors, resulting in uneven flavoring and large fluctuations in product flavor.

[0006] Traditional technology cannot adjust the amount of fragrance in a timely and accurate manner, resulting in an imbalance in the fragrance ratio. In addition, improper handling of condensed fragrances inside the fragrance cavity will also interfere with the accuracy of the fragrance amount. Summary of the invention

[0007] An object of the present invention is to provide a flavoring control system for heated cigarettes to solve the problems that the aforementioned compressed air system cannot quickly switch its use according to the needs of different production stages, the flavoring cavity structure cannot effectively guide and accelerate the airflow, and interferes with the flavoring accuracy.

[0008] According to the present invention, a flavoring control system for heating cigarettes is provided, comprising a compressed air pipeline system, a flavoring pipeline system, a flavoring pipeline system and a control system; wherein:

[0009] The compressed air pipeline system is used to compress the air source from the power workshop and is divided into two routes after passing through the first electric steering valve, one of which is a compressed air pipeline for atomizing fragrances, and the other is a feeding compressed air pipeline, which is used to pass the thin sheet tow through the fragrance adding cavity;

[0010] The spice delivery pipeline system includes a storage tank, a pneumatic diaphragm pump and a sixth electric stop valve;

[0011] The fragrance pipeline system includes a fragrance tank, a third electric stop valve, a third electric steering valve, a gear pump, a second pressure sensor, a back pressure valve, a first electric stop valve and a fragrance cavity;

[0012] The control system includes a PLC controller and a control panel. The control panel is provided with a plurality of control keys and a display screen. The PLC controller is used to issue control instructions to control the operation of the compressed air pipeline system, the fragrance delivery pipeline system, and the fragrance adding pipeline system.

[0013] Optionally, the compressed air pipeline system includes a first electric steering valve, a pneumatic diaphragm valve, a second electric steering valve and a first pressure sensor; wherein the first electric steering valve is used to control the flow direction of compressed air: when atomized flavors are required, the first electric steering valve and the second electric steering valve are connected to the atomized flavor compressed air pipeline; when the thin film bundle needs to be passed through the fragrance cavity, the first electric steering valve and the second electric steering valve are connected to the feeding compressed air pipeline; the pneumatic diaphragm valve is used to adjust the pressure of compressed air; the first pressure sensor is used to detect the pressure of compressed air, and is used in conjunction with the pneumatic diaphragm valve.

[0014] Optionally, the compressed air pipeline system further includes a second filter, which is connected between the first electric steering valve and the pneumatic diaphragm valve and is used to filter moisture or oil in the compressed air.

[0015] Optionally, the spice jar of the spice delivery pipeline system is placed on a pull-out type placement rack, and a magnetic stirrer is provided on the pull-out type placement rack.

[0016] Optionally, in the spice delivery pipeline system, the pneumatic diaphragm pump is used to deliver spices from the storage tank to the spice tank. When the spice tank detects that the material level is lower than the low material level, the spice delivery pipeline system automatically starts the pneumatic diaphragm pump to load the material. When the material level reaches the high material level, the spice delivery pipeline system automatically stops.

[0017] Optionally, in the flavoring pipeline system, the flavor tank is provided with a weighing module, and the weighing module is used to measure the weight of the liquid feed and transmit the liquid feed weight information to the control system via a second pressure sensor.

[0018] Optionally, in the flavoring pipeline system, the back pressure valve controls the pipeline pressure by adjusting the pressure, and the adjustment range of the back pressure valve pressure is set to 0~0.8MPa.

[0019] Optionally, in the fragrance piping system, the fragrance cavity is a combination of a cone and a cylinder; a nozzle is provided in the fragrance cavity, and the nozzle is provided in the cylindrical part of the fragrance cavity; a fragrance reflux port is also provided at the bottom of the fragrance cavity for recovering the fragrance condensed on the inner wall of the fragrance cavity.

[0020] Optionally, the flavoring control system for heating cigarettes also includes a recovery pipeline system, which includes a flavor reflux pipeline, a fourth electric steering valve, a residual liquid tank and a first filter, one end of the flavor reflux pipeline is connected to the flavoring cavity, and the other end is adjacent to the fourth electric steering valve, and the fourth electric steering valve is divided into two paths, one is connected to the residual liquid tank, and the other is connected to the storage tank.

[0021] Optionally, the atomizing flavor compressed air pipeline, the feeding compressed air pipeline, and the flavor return pipeline are all transparent plastic tubes made of polyvinyl chloride plastic or thermoplastic elastomer material.

[0022] The flavoring control system for heating cigarettes disclosed in the present invention has the following technical effects:

[0023] The compressed air pipeline system is used to compress the air source from the power workshop and is divided into two routes after passing through the first electric steering valve. One is the atomization fragrance compressed air pipeline, which is used to atomize fragrance, and the other is the feeding compressed air pipeline, which is used to pass the thin film bundle through the fragrance adding cavity. This diversion design, combined with the corresponding electric steering valve, can flexibly switch functions according to production needs. For example, at the initial stage of production startup, the feeding function is first used to ensure that the thin film bundle is in place, and then quickly switch to the atomization fragrance function for fragrance adding, which improves the adaptability and production efficiency of the system.

[0024] The first pressure sensor detects the pressure of compressed air in real time and is used in conjunction with the pneumatic diaphragm valve to build an intelligent pressure feedback regulation closed loop. Once the pressure deviates from the set range, the signal is immediately fed back to the control system, which then instructs the pneumatic diaphragm valve to make corresponding adjustments to ensure that the compressed air pressure is always stable in a precise range that meets production needs.

[0025] The tapered shape of the cone in the fragrance chamber accelerates the airflow, increases the shear force on the fragrance, and makes the fragrance more evenly atomized and dispersed more thoroughly. The cylindrical part provides a stable passage space for the thin strands to ensure that the strands can maintain a uniform and stable forward movement during the fragrance process, avoiding the shaking and deviation of the strands caused by the irregular cavity structure, thereby ensuring the uniformity and consistency of the fragrance.

[0026] The fragrance condensed on the inner wall is recovered through the fragrance reflux port, which can not only keep the nozzle unobstructed and ensure the stability of the atomization effect, but also accurately control the fragrance amount to avoid the fragrance error caused by the interference of condensed fragrance. When the vehicle speed changes, the system can quickly adjust the fragrance amount in real time according to the vehicle speed to ensure that the fragrance ratio always meets the product design requirements within the entire production speed range.

[0027] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0029] Figure 1 A schematic diagram of the structure of a flavoring control system for heated cigarettes provided in an embodiment of the present invention.

[0030] The following are marked in the figure:

[0031] 1. Power light; 2. Start light; 3. Selection switch; 4. First filter; 5. First electric steering valve; 6. Atomizing flavor compressed air pipeline; 7. Feeding compressed air pipeline; 8. Second filter; 9. Second electric steering valve; 10. Pneumatic diaphragm valve; 11. First pressure sensor; 12. First electric stop valve; 13. Second electric stop valve; 14. Fragrance chamber; 15. Fragrance reflux port; 16. Fragrance reflux pipeline; 17. Back pressure valve; 18. The second pressure sensor; 19. gear pump; 20. gear pump servo motor; 21. the third electric steering valve; 22. the third electric stop valve; 23. the fourth electric stop valve; 24. the cleaning tank; 25. the spice tank; 26. the low material level; 27. the high material level; 28. the air vent; 29. ​​the fifth electric stop valve; 30. the sixth electric stop valve; 31. the pneumatic diaphragm pump; 32. the fourth electric steering valve; 33. the residual liquid tank; 34. the storage tank; 35. the third filter. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0034] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0035] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0036] The present invention provides an embodiment of a flavoring control system for heating cigarettes. Specifically, Figure 1 As shown, it includes a compressed air pipeline system, a fragrance delivery pipeline system, a fragrance adding pipeline system and a control system; wherein:

[0037] The compressed air pipeline system is used to compress the air source from the power workshop and is divided into two paths after passing through the first electric steering valve 5. One path is the atomization fragrance compressed air pipeline 6, which is used to atomize fragrance, and the other is the feeding compressed air pipeline 7, which is used to pass the thin film bundle through the fragrance adding cavity 14; this diversion design is combined with the corresponding electric steering valve, and the function can be flexibly switched according to production needs. For example, at the initial stage of starting production, the feeding function is first used to ensure that the thin film bundle is in place, and then it is quickly switched to the atomization fragrance function for fragrance adding, which improves the adaptability and production efficiency of the system.

[0038] The fragrance delivery pipeline system includes a storage tank 34, a pneumatic diaphragm pump 31 and a sixth electric stop valve 30;

[0039] The sixth electric stop valve 30 is used to control the opening / closing of the flavor delivery pipeline system. A third filter 35 is arranged in the storage tank 34. The third filter 35 is a micro filter connected to the end of the transparent flavor delivery pipeline to prevent particles or impurities in the flavor from entering the pipeline, blocking the pipeline or damaging the components on the pipeline.

[0040] The flavoring pipeline system includes a flavoring tank 25, a third electric stop valve 22, a third electric steering valve 21, a gear pump 19, a second pressure sensor 18, a back pressure valve 17, a first electric stop valve 12 and a flavoring cavity 14; wherein, the flavoring tank 25 is used to store flavoring and system control, and the flavoring tank 25 is placed on a weighing module; the weighing module is installed on a pull-out placement rack, and the flavoring tank 25 can be manually taken out for deep cleaning to prevent cross-flavoring. The weighing module includes a sensor, a top plate, a bottom plate, and a connector, and the weighing module is integrated in a box. The weighing module is used to measure the timely weight of the liquid and upload it to the control system through the sensor; at the same time, the weight information can be displayed on the control panel simulation feeding tank, and the simulation feeding tank is provided with a high material level 27 and a low material level 26. The flavoring tank 25 is placed on a pull-out placement rack with an integrated weighing module, which is convenient for manual removal and deep cleaning, eliminating the problem of cross-flavoring between different batches of flavors, and ensuring the pure flavor of each batch of heated cigarettes. The third electric stop valve 22 can strictly control the opening and closing of the fragrance pipe system to prevent the fragrance from leaking or flowing by mistake during the non-fragrant period, and can effectively block the fragrance from flowing back to avoid secondary contamination of the fragranced thin sheet tow, thereby ensuring product quality.

[0041] Among them, it should be noted that the third electric stop valve 22 is used to control the opening / closing of the fragrance pipeline system, and also has the function of preventing the backflow of fragrance; the third electric steering valve 21 is used to control fragrance or cleaning. When fragrance is required, the third electric steering valve 21 is connected to the fragrance pipeline; when cleaning is required, the third electric steering valve 21 is connected to the cleaning pipeline; the gear pump 19 is driven by the gear pump servo motor 20, and is used to transport fragrance and adjust the flow; the second pressure sensor 18 is used to detect the output pressure of the gear pump 19. When the output pressure is too high, the system alarms.

[0042] The control system includes a PLC controller and a control panel. The control panel is provided with a number of control keys and a display screen. The PLC controller is used to issue control instructions to control the operation of the compressed air pipeline system, the fragrance delivery pipeline system, and the fragrance adding pipeline system.

[0043] Specifically, through the control keys and display screen on the control panel, the operator can intuitively and conveniently operate and monitor the entire flavoring control system. For example, the control keys include a power light 1, a start light 2, and a selection switch 3. During the production process, the compressed air pressure, flavor delivery speed, flavoring amount and other parameters can be adjusted in real time according to the actual situation to achieve precise control; at the same time, the display screen provides real-time feedback on the status information of various parts of the system, such as pressure value, material level height, equipment operation status, etc., which is convenient for timely discovery and resolution of problems, greatly improving the automation, accuracy and overall operation efficiency of the production process.

[0044] In the embodiment of the present invention, the compressed air pipeline system includes a first electric steering valve 5, a pneumatic diaphragm valve 10, a second electric steering valve 9 and a first pressure sensor 11; wherein the first electric steering valve 5 is used to control the flow direction of compressed air: when it is necessary to atomize the flavor, the first electric steering valve 5 and the second electric steering valve 9 are connected to the atomizing flavor compressed air pipeline 6; when it is necessary to pass the thin sheet tow through the fragrance cavity, the first electric steering valve 5 and the second electric steering valve 9 are connected to the feeding compressed air pipeline 7; the pneumatic diaphragm valve 10 is used to adjust the pressure of the compressed air; the first pressure sensor 11 is used to detect the pressure of the compressed air and is used in conjunction with the pneumatic diaphragm valve 10. Specifically, the second electric steering valve 9 is a three-way valve used to control the flow direction of compressed air. When it is necessary to atomize the flavor, the second electric steering valve 9 is connected to the atomizing flavor compressed air pipeline 6; when it is necessary to assist the thin sheet tow to pass through the fragrance cavity 14, the second electric steering valve 9 is connected to the feeding compressed air pipeline 7. The pneumatic diaphragm valve 10 is used to adjust the pressure of the compressed air to maintain a suitable material-gas ratio and atomization effect. The first pressure sensor 11 detects the pressure of the compressed air in real time and is used in conjunction with the pneumatic diaphragm valve 10 to build an intelligent pressure feedback regulation closed loop. Once the pressure deviates from the set range, the signal is immediately fed back to the control system, and the control system then instructs the pneumatic diaphragm valve 10 to make corresponding adjustments to ensure that the compressed air pressure is always stable in a precise range that meets production needs.

[0045] Specifically, the compressed air pipeline system further includes a second electric stop valve 13, which is an electric one-way valve for controlling the opening / closing of the compressed air pipeline.

[0046] During production, if assistance is needed to pass the thin sheet tow through the fragrance chamber 14, click the "feed" button on the control panel, the first electric steering valve 5, the second electric steering valve 9 and the feeding compressed air pipeline 7 are connected, and the second electric stop valve 13 is opened;

[0047] During production, the compressed air pipeline defaults to the atomizing fragrance function. When production is started, the first electric steering valve 5, the second electric steering valve 9 and the atomizing fragrance compressed air pipeline 6 are connected, and the second electric stop valve 13 is opened.

[0048] In the embodiment of the present invention, the compressed air pipeline system further includes a second filter 8, which is connected between the first electric steering valve 5 and the pneumatic diaphragm valve 10 and is used to filter moisture or oil in the compressed air to improve the purity of the compressed air.

[0049] In the embodiment of the present invention, the spice jar 25 of the spice delivery pipeline system is placed on a pull-out rack, and a magnetic stirrer is provided on the pull-out rack. The magnetic stirrer has heating and stirring functions, and the heating temperature of the flavor is ≤120℃±2℃.

[0050] It should be noted that when cleaning is required, the spice jar 25 can be taken out from the pull-out placement rack for cleaning;

[0051] When fragrance is needed, the fragrance jar 25 can be taken out from the pull-out placement rack and fragrance can be added manually;

[0052] When heating is needed, click the "Heating On" button on the control panel to turn the heating function on / off; the temperature can be set by clicking the "Set Temperature" button, and the current temperature can be displayed in real time on the control panel;

[0053] When stirring is required, click the "Stirring On" button to set the stirring function "on / off". The speed can be set in the "Speed ​​Setting" menu, and the control panel can display the current stirring motor status in real time. The stirring motor operates in a sinusoidal wave mode, that is, the stirring motor periodically rotates forward and reverse to improve the uniformity of the spice stirring.

[0054] In the embodiment of the present invention, in the spice delivery pipeline system, the pneumatic diaphragm pump 31 is used to deliver spices from the storage tank 34 to the spice tank 25. When the spice tank 25 detects that the material level is lower than the low material level 26, the spice delivery pipeline system automatically starts the pneumatic diaphragm pump 31 to load the material. When the material level reaches the high material level 27, the spice delivery pipeline system automatically stops. The low material level 26 and the high material level 27 are displayed on the control panel as simulated material levels, and the material level signal is a weight signal.

[0055] In the embodiment of the present invention, in the fragrance pipe system, the fragrance tank 25 is provided with a weighing module, and the weighing module is used to measure the weight of the liquid feed, and transmit the liquid feed weight information to the control system through the second pressure sensor 18 .

[0056] In the embodiment of the present invention, in the fragrance adding pipeline system, the back pressure valve 17 controls the pipeline pressure by adjusting the pressure, and the adjustment range of the back pressure valve pressure is set to 0-0.8MPa.

[0057] In the embodiment of the present invention, in the fragrance piping system, the fragrance cavity 14 includes a cavity and a nozzle, and the cavity is a combination of a cone and a cylinder; a nozzle is arranged in the fragrance cavity 14, and the nozzle is arranged in the cylindrical part of the fragrance cavity. A fragrance return port 15 is also arranged at the bottom of the fragrance cavity 14, and the fragrance return port 15 is used to recover the fragrance condensed on the inner wall of the fragrance cavity 14. The fragrance amount adjustment range in the fragrance piping system is 0.2-6g / m, the fragrance amount precision error is less than 1.0%, and the matching vehicle speed range is 0-100m / min. It should be noted that the tapered shape of the cone accelerates the airflow, enhances the shear force on the fragrance, and makes the fragrance atomized more evenly and dispersed more thoroughly. The cylindrical part provides a stable passage space for the thin-sheet tow, ensuring that the tow can maintain a uniform and stable forward speed during the fragrance process, avoiding the shaking and deviation of the tow due to the irregular cavity structure, and thus ensuring the uniformity and consistency of the fragrance. The fragrance condensed on the inner wall is recovered through the fragrance reflux port 15, which can not only keep the nozzle unobstructed and ensure the stability of the atomization effect, but also accurately control the fragrance amount to avoid the fragrance error caused by the interference of condensed fragrance. On the other hand, when the vehicle speed changes, the system can quickly adjust the fragrance amount in real time according to the vehicle speed to ensure that the fragrance ratio always meets the product design requirements within the entire production speed range.

[0058] In an embodiment of the present invention, the flavoring control system for heating cigarettes also includes a recovery pipeline system, which includes a flavoring reflux pipeline 16, a fourth electric steering valve 32, a residual liquid tank 33 and a first filter 4. One end of the flavoring reflux pipeline 16 is connected to the flavoring cavity 14, and the other end is adjacent to the fourth electric steering valve 32. The fourth electric steering valve 32 is divided into two paths, one connected to the residual liquid tank 33, and the other connected to the storage tank 34.

[0059] Specifically, the fragrance return pipe 16 is a transparent plastic tube made of non-toxic polyvinyl chloride plastic or thermoplastic elastomer (TPE) and other materials; when recycling, the material tank can be selected on the control panel. If it needs to be reused, select the storage tank 34, and the fragrance is recycled to the storage tank 34 after being filtered by the first filter 4; if it is not reused, select the residual liquid tank 33; generally, the storage tank 34 is selected during pre-filling, and the residual liquid tank 33 is selected during the production process; the fourth electric steering valve 32 is used to control the flow direction of the recovered fragrance; the residual liquid tank 33 is used to collect the recovered residual liquid or cleaning water.

[0060] In the embodiment of the present invention, the flavoring control system for heating cigarettes also includes a cleaning pipeline system, including a cleaning tank 24, a fourth electric stop valve 23 and a third electric steering valve 21, which are used to clean the flavoring pipeline system. The fourth electric stop valve 23 is used to control the opening / closing of the cleaning pipeline system; the third electric steering valve 21 is a common valve for the cleaning pipeline system and the flavoring pipeline, and is connected to the flavoring pipeline when flavoring is required, and is connected to the cleaning pipeline when cleaning is required.

[0061] In the embodiment of the present invention, the atomizing flavor compressed air pipeline 6, the feeding compressed air pipeline 7, and the flavor return pipeline 16 are all transparent plastic tubes made of polyvinyl chloride plastic or thermoplastic elastomer material. The atomizing flavor compressed air pipeline 6 is made of transparent plastic tube material, which provides an intuitive visualization window for the production process. The operator can observe in real time whether there are abnormal conditions such as uneven atomization and whether there are flavor agglomerates blocking the pipeline. For the feeding compressed air pipeline 7, the transparent material allows the operator to clearly see the transportation of the thin film bundle. The selection of polyvinyl chloride plastic or thermoplastic elastomer material is not easy to cause chemical reactions during long-term contact with flavors and compressed air, avoiding impurities caused by material corrosion and degradation from mixing into the flavors or compressed air, contaminating the product or affecting the operation of the equipment.

[0062] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings, but the above is only a preferred embodiment of the present invention. It should be noted that the technical features involved in the above embodiments and their preferred methods can be reasonably combined and matched into a variety of equivalent schemes by those skilled in the art without departing from or changing the design ideas and technical effects of the present invention; therefore, the present invention is not limited to the scope of implementation shown in the drawings, and all changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the specification and drawings, should be within the protection scope of the present invention.

Claims

1. A flavoring control system for heated cigarettes, characterized in that: It includes compressed air pipeline system, fragrance delivery pipeline system, fragrance adding pipeline system and control system; among which: The compressed air pipeline system is used to compress the air source from the power plant and divide it into two paths after passing through the first electric steering valve (5), one of which is a compressed air pipeline for atomizing fragrance (6) for atomizing fragrance, and the other is a feeding compressed air pipeline (7) for passing the thin sheet tow through the fragrance adding cavity (14); The fragrance delivery pipeline system comprises a storage tank (34), a pneumatic diaphragm pump (31) and a sixth electric stop valve (30); The fragrance pipeline system comprises a fragrance tank (25), a third electric stop valve (22), a third electric steering valve (21), a gear pump (19), a second pressure sensor (18), a back pressure valve (17), a first electric stop valve (12), and a fragrance chamber (14); The control system includes a PLC controller and a control panel. The control panel is provided with a plurality of control keys and a display screen. The PLC controller is used to issue control instructions to control the operation of the compressed air pipeline system, the fragrance delivery pipeline system, and the fragrance adding pipeline system.

2. The flavoring control system for heated cigarettes according to claim 1, characterized in that: The compressed air pipeline system comprises a first electric steering valve (5), a pneumatic diaphragm valve (10), a second electric steering valve (9) and a first pressure sensor (11); wherein the first electric steering valve (5) is used to control the flow direction of compressed air: when atomizing fragrance is required, the first electric steering valve (5) and the second electric steering valve (9) are connected to the atomizing fragrance compressed air pipeline (6); when the sheet yarn bundle needs to pass through the fragrance adding cavity, the first electric steering valve (5) and the second electric steering valve (9) are connected to the feeding compressed air pipeline (7); the pneumatic diaphragm valve (10) is used to adjust the pressure of compressed air; the first pressure sensor (11) is used to detect the pressure of compressed air and is used in conjunction with the pneumatic diaphragm valve (10).

3. The flavoring control system for heated cigarettes according to claim 2, characterized in that: The compressed air pipeline system further comprises a second filter (8), the second filter (8) being connected between the first electric steering valve (5) and the pneumatic diaphragm valve (10) and being used for filtering moisture or oil in the compressed air.

4. The flavoring control system for heated cigarettes according to claim 1, characterized in that: The spice tank (25) of the spice delivery pipeline system is placed on a pull-out placement rack, and a magnetic stirrer is provided on the pull-out placement rack.

5. The flavoring control system for heated cigarettes according to claim 1, characterized in that: In the spice delivery pipeline system, the pneumatic diaphragm pump (31) is used to deliver spices from the storage tank (34) to the spice tank (25); when the spice tank (25) detects that the material level is lower than the low material level (26), the spice delivery pipeline system automatically starts the pneumatic diaphragm pump (31) to load the spices; when the material level reaches the high material level (27), the spice delivery pipeline system automatically stops.

6. The flavoring control system for heated cigarettes according to claim 1, characterized in that: In the fragrance adding pipeline system, the fragrance tank (25) is provided with a weighing module, and the weighing module is used to measure the weight of the liquid feed and transmit the liquid feed weight information to the control system via a second pressure sensor (18).

7. The flavoring control system for heated cigarettes according to claim 1, characterized in that: In the aromatizing pipeline system, the back pressure valve (17) controls the pipeline pressure by adjusting the pressure, and the adjustment range of the back pressure valve pressure is set to 0-0.8 MPa.

8. The flavoring control system for heated cigarettes according to claim 1, characterized in that: In the aromatizing pipeline system, the aromatizing cavity (14) is a combination of a cone and a cylinder; a nozzle is arranged in the aromatizing cavity (14), and the nozzle is arranged in the cylindrical part of the aromatizing cavity; a fragrance return port (15) is also arranged at the bottom of the aromatizing cavity (14), and the fragrance return port (15) is used to recover fragrance condensed on the inner wall of the aromatizing cavity (14).

9. The flavoring control system for heated cigarettes according to claim 1, characterized in that: The invention also comprises a recovery pipeline system, the recovery pipeline system comprising a fragrance return pipeline (16), a fourth electric steering valve (32), a residual liquid tank (33) and a first filter (4); one end of the fragrance return pipeline (16) is connected to the fragrance adding cavity (14), and the other end is adjacent to the fourth electric steering valve (32); the fourth electric steering valve (32) is divided into two paths, one path is connected to the residual liquid tank (33), and the other path is connected to the storage tank (34).

10. The flavoring control system for heated cigarettes according to claim 9, characterized in that: The atomizing flavor compressed air pipeline (6), the feeding compressed air pipeline (7), and the flavor return pipeline (16) are all transparent plastic tubes made of polyvinyl chloride plastic or thermoplastic elastomer material.

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