Preparation system for heating cigarette core

Abstract

The utility model discloses a preparation system for heating a cigarette core, which comprises a mixing device, a granulating device and a drying device which are arranged in sequence, and further comprises a screening device arranged behind the drying device, a granulating device and a controller connected with the screening device and the granulating device, and the controller controls the screening device to screen tobacco particles. And the large-particle-size tobacco particles obtained through screening are controlled to be conveyed to the particle finishing device to be ground, and the ground large-particle-size tobacco particles are conveyed to the screening device to be screened again. According to the utility model, the large-particle-size tobacco particles screened by the screening device are ground by controlling the particle finishing device, so that the original large-particle-size tobacco particles which do not meet the requirements are further finished to obtain qualified tobacco particles, the waste of the large-particle-size tobacco particles is reduced, and the yield of the tobacco particles is greatly improved; the utilization rate of tobacco raw materials is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco production, and in particular relates to a preparation system for heating cigarette cores. Background Art

[0002] With the World Health Organization's smoking ban and human pursuit and yearning for a healthy life, tobacco products are currently developing in a smoke-free, diversified and healthy way. Under this situation, tobacco companies in various countries have seized the opportunity and shifted their research and development focus to a new type of tobacco product that is completely different from traditional cigarettes, such as electronic cigarettes, smokeless tobacco products, heated cigarettes and other tobacco products. Among many new tobacco products, although heated cigarettes started late, their development trend has been rapid in recent years. Heated cigarettes will definitely occupy a place in the future tobacco industry. As the most important component of heated cigarettes, the research on heated cigarette cores has attracted much attention.

[0003] At present, there are three main types of heated cigarette cores, namely, granular, traditional tobacco and reconstituted tobacco. The granular tobacco segment material is mainly tobacco raw materials or some plant raw materials that are crushed and then wet granulated to prepare particles of a certain size, and smoke agents, flavors, etc. are introduced into the particles. The preparation method and production equipment of granular heated cigarette cores are simple, the equipment occupies a small area, and the investment cost is low, which has gained high attention and recognition. However, the current preparation process of granular heated cigarette cores has a high tobacco particle crushing rate and a low yield rate.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The utility model aims to provide a preparation system for heating cigarette cores, so as to reduce the tobacco particle crushing rate and improve the tobacco production yield.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] A preparation system for heated cigarette cores comprises a mixing device, a granulating device and a drying device which are arranged in sequence, and also comprises a screening device and a granulating device arranged after the drying device, and a controller connected to the screening device and the granulating device. The controller controls the screening device to screen tobacco particles, and controls the large-size tobacco particles obtained by screening to be transported to the granulating device for grinding, and then transported to the screening device for screening again after grinding.

[0008] Furthermore, the preparation system includes at least a first and a second screening device, the granulation device is arranged between the first and the second screening devices, and conveyor belts are respectively arranged between the granulation device and the first and the second screening devices, the controller controls the first screening device located in front of the granulation device to screen the tobacco particles, and controls the conveyor belt to transport the screened large-size tobacco particles to the granulation device for grinding, and controls the conveyor belt to transport the ground tobacco particles to the second screening device located behind the granulation device for screening.

[0009] Furthermore, a first conveyor belt and a second conveyor belt are arranged between the second screening device and the granulation device. The controller controls the first conveyor belt to convey the tobacco particles ground by the granulation device to the second screening device, and controls the second conveyor belt to convey the large-size tobacco particles screened by the second screening device to the granulation device for grinding.

[0010] Furthermore, it also includes a finished product collection device arranged after the first and second screening devices, the first and second screening devices are connected to the finished product collection device through conveyor belts respectively, and the controller controls the conveyor belts to transport the tobacco particles of qualified particle sizes obtained by the first and second screening devices to the finished product collection device.

[0011] Furthermore, a vibration conveying device for conveying tobacco particles is arranged before the granulation device, and the vibration conveying device is connected to a controller. When the controller controls the granulation device to grind the granulation, the vibration conveying device can be controlled to vibrate.

[0012] Furthermore, the vibration conveying device is arranged between the granulating device and the drying device.

[0013] Furthermore, a weight sensor is provided on the vibration conveying device, and the controller controls the weight sensor to detect the weight of the tobacco particles, and controls the vibration conveying device to vibrate according to the detected weight.

[0014] Furthermore, the first and second screening devices are respectively connected to waste collecting devices, and the controller controls the screening devices to screen tobacco particles, and controls the screening of small-size tobacco particles to be transported to the waste collecting devices.

[0015] Furthermore, the drying device is an electromagnetic heating drying drum connected to a controller, and the controller controls the electromagnetic heating drying drum to rotate for stir-frying and drying the tobacco particles.

[0016] Furthermore, a plurality of frying plates are movably arranged in the electromagnetic heating drying cylinder of the drying device, and a controller connected to the drying device can control and adjust the angles of the plurality of frying plates.

[0017] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0018] In the utility model, the large-size tobacco particles obtained by screening by the screening device are ground by controlling the particle size refining device, so that the large-size tobacco particles that originally do not meet the requirements are further refining to obtain qualified tobacco particles, thereby reducing the waste of large-size tobacco particles, greatly improving the yield rate of tobacco particles, and improving the utilization rate of tobacco raw materials.

[0019] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0021] Figure 1 , is a schematic diagram of the assembly structure of the system for preparing the heated cigarette core of the utility model;

[0022] Figure 2 , is a schematic diagram of a preparation module for a heated cigarette core according to the utility model.

[0023] In the figure:

[0024] 1. Mixing device; 2. Mixing conveyor belt; 3. Granulating device; 4. Vibrating conveying device; 5. Drying device; 6. Conveyor belt for dried tobacco particles; 7. First screening device; 8. First waste collecting device; 9. Third conveyor belt; 10. Granulating device; 11. Fourth conveyor belt; 12. First finished product conveyor belt; 13. Second finished product conveyor belt; 14. Finished product collecting device; 15. Second screening device; 16. Second waste collecting device.

[0025] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Embodiment 1

[0030] like Figure 1 and Figure 2 As shown, this embodiment provides a system for preparing heated cigarette cores, which includes a mixing device 1, a granulating device 3, and a drying device 5 arranged in sequence, and also includes a screening device and a granulating device 10 arranged after the drying device 5, and a controller connected to the screening device and the granulating device 10. The controller can be a PLC controller.

[0031] The granulating device 3 includes a rotary granulator. The rotary granulator includes a cylinder for rotary granulation, a discharge port is provided at the bottom of the cylinder, a guide plate is provided at the lower end of the discharge port, and the guide plate is detachably provided at the bottom of the cylinder. By changing the thickness of the guide plate in the rotary granulator, the particle density is reduced and the fluffiness is increased, which is more conducive to increasing the smoking amount of the cigarette.

[0032] The screening device refers to a mechanical device that separates and filters materials by their size, shape, density and other characteristics, including a motor and a screen assembly, and the motor drives the screen assembly to vibrate and screen tobacco particles. The mixing device 1 refers to a device for mixing dry and wet materials.

[0033] The controller controls the mixing device 1 to mix the raw materials required for preparing tobacco particles, and then conveys the mixed raw materials to the granulating device 3 to form tobacco particles; the controller controls the conveyor belt to convey the prepared tobacco particles to the drying device 5 for drying to remove part of the moisture, and then controls the conveyor belt to convey the dried tobacco particles to the screening device. The small-size tobacco particles obtained after screening can be collected as qualified products or can be screened more finely again.

[0034] The controller controls the conveyor belt to convey the large-size tobacco particles obtained by screening to the granulation device 10 for grinding, and then conveys them to the screening device for screening again after grinding. The granulation device 10 includes a box body, and a feed port and a discharge port are provided on the box body. A conveyor belt is provided between the feed port of the box body and the screening device. The controller controls the conveyor belt to convey the large-size tobacco particles to the feed port of the granulation device 10 box body. A screen structure and a grinding device located above the screen structure are provided in the box body. The grinding device grinds the large-size tobacco particles, and after grinding, the particles are screened by the screen structure and then conveyed to the screening device from the discharge port for screening again.

[0035] In the utility model, the large-size tobacco particles obtained by screening by the screening device are ground by controlling the particle size refining device 10, so that the large-size tobacco particles that originally do not meet the requirements are further refining to obtain qualified tobacco particles, thereby reducing the waste of large-size tobacco particles, greatly improving the yield of tobacco particles, and improving the utilization rate of tobacco raw materials.

[0036] As an implementation mode of this embodiment, the granulation device 10 has a first side wall and a second side wall which are in relative positions and vertically arranged, the grinding device is a grinding roller structure, one end of the grinding roller is rotatably arranged on the first side wall, and the other end of the grinding roller is rotatably arranged on the second side wall. The screen structure is a cylindrical structure, the screen structure is horizontally arranged between the first side wall and the second side wall and arranged below the grinding roller in a surrounding or semi-enclosing manner, the first side wall and the second side wall are provided with mounting openings, the outer sides of the first side wall and the second side wall are respectively provided with mounting rods, the mounting rods are detachably arranged on the first side wall and the second side wall through the mounting openings, and the cylindrical screen structure is detachably arranged in the box of the granulation device 10 through the mounting rods.

[0037] In this embodiment, the screen structure can be disassembled, replaced and installed through the installation rod, and the user can select a screen with a suitable mesh size for screening according to actual production needs.

[0038] Embodiment 2

[0039] This embodiment provides the following configurations of the screening device and the granulation device 10:

[0040] Method 1: The preparation system of heated cigarette core includes a screening device, a granulation device 10 is arranged behind the screening device, and at least two conveyor belts are arranged between the granulation device 10 and the screening device. The large-size tobacco particles obtained after screening by the screening device are conveyed to the granulation device 10 through a conveyor belt for further grinding, and after grinding, they are conveyed back to the screening device through another conveyor belt for further screening. This method has a simple structure, and the waste of large-particle tobacco particles can be avoided by cooperating with a screening device and a granulation device 10, thereby improving the utilization rate of tobacco particles and the yield rate.

[0041] Method 2: Figure 1 As shown, the system for preparing heated cigarette cores at least comprises a first screening device 7 and a second screening device 15, and the granulation device 10 is arranged between the first screening device 7 and the second screening device 15. A third conveyor belt 9 is arranged between the granulation device 10 and the first screening device 7, and a fourth conveyor belt 11 is arranged between the granulation device 10 and the second screening device 15.

[0042] In the above manner, the controller controls the first screening device 7 located in front of the granulation device 10 to screen tobacco particles, controls the third conveyor belt 9 to convey the screened large-size tobacco particles to the granulation device 10 for grinding, and controls the conveyor belt to convey the ground tobacco particles to the second screening device 15 located behind the granulation device 10 for screening. In this way, even if large tobacco particles appear, the first screening device 7 can still screen them normally, and the production efficiency is high.

[0043] Furthermore, a first conveyor belt and a second conveyor belt are arranged between the second screening device 15 and the granulation device 10. The controller controls the first conveyor belt to convey the tobacco particles ground by the granulation device 10 to the second screening device 15, and controls the second conveyor belt to convey the large-size tobacco particles screened by the second screening device 15 to the granulation device 10 for grinding.

[0044] In this way, unqualified tobacco particles screened by the second screening device 15 will be transported back to the particle size adjustment device 10 for further grinding, and the cycle will continue until there are no tobacco particles with large particle sizes, thereby fully improving the qualified rate of tobacco particles.

[0045] Embodiment 3

[0046] The preparation system of heated cigarette cores also includes a finished product collection device 14 arranged behind the first screening device 7 and the second screening device 15. The first screening device 7 is connected to the finished product collection device 14 through a first finished product conveyor belt 12, and the second screening device 15 is connected to the finished product collection device 14 through a second finished product conveyor belt 13. The controller controls the first finished product conveyor belt 12 and the second finished product conveyor belt 13 to convey the tobacco particles of qualified particle size obtained by screening the first screening device 7 and the second screening device 15 to the finished product collection device 14.

[0047] The first screening device 7 and the second screening device 15 may share the same finished product collecting device 14 , or the finished product collecting devices 14 may be respectively arranged behind the first screening device 7 and the second screening device 15 ; preferably, the first screening device 7 and the second screening device 15 share the same finished product collecting device 14 .

[0048] In this embodiment, the controller can be connected to the first screening device 7, the second screening device 15, the first finished product conveyor belt 12, and the second finished product conveyor belt 13 respectively, and control the first finished product conveyor belt 12 and the second finished product conveyor belt 13 to convey materials respectively. When the second screening device 15 screens the tobacco particles from the granulation device 10, the second finished product conveyor belt 13 can be controlled to start, and the qualified tobacco particles are conveyed to the finished product collection device 14. When the granulation device 10 is not started or the grinding is not completed, the second finished product conveyor belt 13 can be controlled to be in a stationary state to avoid the second finished product conveyor belt 13 doing useless work.

[0049] Embodiment 4

[0050] In this embodiment, the tobacco particle material is mixed by a mixing device 1, and then transported to a granulating device 3 for granulation. After granulation, it is vibrated by a vibrating conveying device 4 and quantitatively transported to a drying device 5 for drying. After drying, it is screened to obtain large-size tobacco particles, medium-size tobacco particles and small-size tobacco particles. The medium-size tobacco particles are transported to a finished product collecting device 14 for collection, the small-size tobacco particles are transported to a waste collecting device for collection, and the large-size tobacco particles are transported to a granulating device 10 for grinding. After grinding, it is screened again. The large-size tobacco particles obtained after screening are transported to the granulating device 10 for grinding again, the medium-size tobacco particles are transported to a finished product collecting device 14 for collection, and the small-size tobacco particles are transported to a waste collecting device for collection.

[0051] Furthermore, in the preparation system of heated cigarette core, a vibration conveying device 4 for conveying tobacco particles is provided in the previous process of the granulation device 10, and the vibration conveying device 4 is connected to the controller. Specifically, the vibration conveying device 4 includes a material trough for accommodating and conveying tobacco particles, and also includes a vibration motor connected to the material trough, and the controller is connected to the vibration motor, and the controller controls the vibration motor to start, thereby controlling the vibration of the material trough.

[0052] In this embodiment, the controller can control the vibration conveying device 4 to vibrate when controlling the granulation device 10 to grind the tobacco particles, so as to reduce the speed of material transportation and reserve time for the granulation device 10 to grind the tobacco particles. That is, the controller of this embodiment negatively adjusts the vibration frequency and vibration duration of the vibration conveying device 4 according to the granulation state of the granulation device 10, so as to ensure that the preparation system of the heated cigarette core can be fully ground and screened to obtain qualified tobacco particles during continuous operation.

[0053] Furthermore, as an implementation method of this embodiment, the vibration conveying device 4 is arranged between the granulating device 3 and the drying device 5; thus, the controller controls the opening of the vibration conveying device 4 and controls its vibration frequency, thereby controlling the number of tobacco particles entering the drying device 5. When the granulating device 10 grinds the particles, the vibration conveying device 4 can be controlled to vibrate, which can reasonably reduce the number of tobacco particles transported to the drying device 5, reduce the conveying efficiency of the granulating device 10 when grinding the particles, and reserve enough time for the granulating device 10 to grind large-size tobacco particles; on the other hand, the speed is reduced before the tobacco particles enter the drying device 5, thereby controlling the delay of the opening time of the drying device 5 to avoid energy waste caused by too long drying time. After a sufficient amount of tobacco particles have accumulated in the drying device 5, the drying device 5 is controlled to be opened for drying.

[0054] Furthermore, as another implementation of this embodiment, a weight sensor is provided on the vibrating conveying device, and the controller controls the weight sensor to detect the weight of tobacco particles, and controls the vibration of the vibrating conveying device 4 according to the detected weight. Specifically, the controller is electrically connected to the weight sensor and the vibrating conveying device 4, and the tobacco particles vibrate on the vibrating conveying device 4. After the granulation device 3 before the vibrating conveying device 4 is granulated, the controller controls the conveyor belt to convey the prepared raw material particles to the vibrating conveying device 4, and the vibrating conveying device 4 vibrates to avoid material accumulation. The tobacco particles vibrated by the vibrating conveying device 4 are conveyed to the drying device 5, and the weight sensor is controlled to detect the weight of the material on the conveying device. When the accumulated weight reaches the set threshold, it indicates that a sufficient amount of tobacco particles have been accommodated in the drying device 5. At this time, the controller can control the drying device 5 to start drying, so as to dry the tobacco particles in the drying device 5.

[0055] Embodiment 5

[0056] The first screening device 7 and the second screening device 15 in the utility model are respectively connected to a waste collection device, and the controller controls the screening device to screen tobacco particles and controls the screening of small-size tobacco particles to be transported to the waste collection device. Specifically, Figure 1 As shown, the first screening device 7 is connected to the first waste collecting device 8, and the second screening device 15 is connected to the second waste collecting device 16. The controller controls the small-size tobacco particles screened by the first screening device 7 to be transported to the first waste collecting device 8; the controller controls the small-size tobacco particles screened by the second screening device 15 to be transported to the second waste collecting device 16.

[0057] In this embodiment, different screening devices are connected to different waste collecting devices, so that the waste generated by the different screening devices can be collected separately, so that the different wastes can be managed separately.

[0058] Embodiment 6

[0059] The drying device is an electromagnetic heating drying drum connected to a controller, and the controller controls the electromagnetic heating drying drum to rotate for stir-frying and drying tobacco particles. When the controller controls the granulation device 10 to grind large-size tobacco particles, the rotation speed and heating temperature of the electromagnetic heating drying drum are controlled to decrease, so as to appropriately reduce the drying efficiency, so that the tobacco particles stay in the drying device 5 for a longer time, and sufficient time is gained for the granulation device 10 to grind the materials; when the granulation device 10 does not need to grind tobacco particles, the electromagnetic heating drying drum is controlled to maintain a normal rotation speed and temperature, so as to ensure that the preparation system of the heated cigarette core can operate efficiently to prepare tobacco particles.

[0060] Among them, the electromagnetic heating drying cylinder of the drying device 5 includes a frying plate arranged in the drying cylinder, and the frying plate is movably arranged on the inner wall of the drying cylinder, one end of the frying plate is movably arranged on the inner wall of the drying cylinder, and the other end is extended in the direction of its central axis; or, the electromagnetic heating drying cylinder has a central axis arranged to coincide with its central axis, one end of the frying plate is rotatably arranged on the central axis, and the other end is extended to the inner wall of the drying cylinder, and the angle of the frying plate is adjustable. By adjusting the angle of the frying plate, the sliding height of the tobacco particles in the cylinder wall of the drying device 5 can be controlled.

[0061] Specifically, a driving motor is arranged on the central axis of the electromagnetic heating drying cylinder, and the driving shaft of the driving motor is connected to the frying plate for driving the frying plate to rotate. The controller of the preparation system for heating the cigarette core is electrically connected to the driving motor, and the angles of the frying plates are adjusted by controlling the rotation of the driving motor.

[0062] In this embodiment, the tobacco particles are evenly heated in the drying device 5, the moisture is evenly lost, and the tobacco particles only slide left and right on the cylinder wall instead of falling up and down, which greatly reduces the breakage rate of the tobacco particles during the drying process.

[0063] Embodiment 7

[0064] This embodiment provides a tobacco particle preparation system and preparation process, which are as follows:

[0065] The raw materials required for preparing tobacco particles are mixed by a mixing device 1, and the raw materials include dry and wet raw materials; the mixed materials are sent to a granulating device 3 through a mixing conveyor belt 2 to form tobacco particles; the tobacco particles are quantitatively transported to a drying device 5 through a vibrating conveying device 4, the tobacco particles are dried to remove part of the moisture, and then the dried particles are transported to a first screening device 7 through a dried tobacco particle conveyor belt 6 to screen out particles larger than 16 mesh, particles smaller than 24 mesh, and particles between 16 and 24 mesh; particles smaller than 24 mesh are discharged to a first waste collection device 8, and particles between 16 and 24 mesh are discharged to a first waste collection device 8. The finished product conveyor belt 12 is conveyed to the finished product collecting device 14, and the particles larger than 16 mesh are conveyed to the granulating device 10 via the third conveyor belt 9, and the granulated particles are conveyed to the second screening device 15 via the fourth conveyor belt 11; the second screening device 15 screens out particles between 16-24 mesh, particles smaller than 24 mesh and particles larger than 16 mesh, and the particles between 16-24 mesh are conveyed to the finished product collecting device 14 via the second finished product conveyor belt 13, and the particles smaller than 24 mesh are discharged to the second waste collecting device 16, and the particles larger than 16 mesh are conveyed back to the granulating device 10, and the above steps are repeated until there are no particles larger than 16 mesh.

[0066] The tobacco particles prepared by the system of this embodiment can further resize the large-size particles that originally do not meet the requirements to obtain a portion of qualified particles, thereby greatly improving the yield of tobacco particles. In addition, this method reduces the crushing of particles and improves the utilization rate of tobacco raw materials.

[0067] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A system for preparing heated cigarette cores, comprising a mixing device, a granulating device, and a drying device arranged in sequence, characterized in that: It also includes a screening device, a granulation device and a controller connected to the screening device and the granulation device, which are arranged after the drying device. The controller controls the screening device to screen the tobacco particles, and controls the large-size tobacco particles obtained by screening to be transported to the granulation device for grinding, and then transported to the screening device for screening again after grinding.

2. A system for preparing a heated cigarette core according to claim 1, characterized in that: The preparation system comprises at least a first and a second screening device, the granulation device is arranged between the first and the second screening devices, and conveyor belts are respectively arranged between the granulation device and the first and the second screening devices, the controller controls the first screening device located in front of the granulation device to screen tobacco particles, controls the conveyor belt to transport the screened large-size tobacco particles to the granulation device for grinding, and controls the conveyor belt to transport the ground tobacco particles to the second screening device located behind the granulation device for screening.

3. A system for preparing a heated cigarette core according to claim 2, characterized in that: A first conveyor belt and a second conveyor belt are arranged between the second screening device and the granulation device. The controller controls the first conveyor belt to convey the tobacco particles ground by the granulation device to the second screening device, and controls the second conveyor belt to convey the large-size tobacco particles screened by the second screening device to the granulation device for grinding.

4. A system for preparing a heated cigarette core according to claim 2 or 3, characterized in that: It also includes a finished product collection device arranged after the first and second screening devices. The first and second screening devices are connected to the finished product collection device through conveyor belts respectively. The controller controls the conveyor belts to convey the tobacco particles of qualified particle sizes obtained by the first and second screening devices to the finished product collection device.

5. A system for preparing a heated cigarette core according to claim 4, characterized in that: A vibrating conveying device for conveying tobacco particles is arranged before the granulating device, and the vibrating conveying device is connected to a controller. When the controller controls the granulating device to grind the granules, the vibrating conveying device can be controlled to vibrate.

6. A system for preparing a heated cigarette core according to claim 5, characterized in that: The vibration conveying device is arranged between the granulating device and the drying device.

7. A system for preparing a heated cigarette core according to claim 5 or 6, characterized in that: The vibration conveying device is provided with a weight sensor, and the controller controls the weight sensor to detect the weight of tobacco particles, and controls the vibration conveying device to vibrate according to the detected weight.

8. A system for preparing a heated cigarette core according to claim 2, 3, 5 or 6, characterized in that: The first and second screening devices are respectively connected to waste collecting devices. The controller controls the screening devices to screen tobacco particles and controls the screening of small-size tobacco particles to be transported to the waste collecting devices.

9. A system for preparing a heated cigarette core according to claim 1, 2, 3, 5 or 6, characterized in that: The drying device is an electromagnetic heating drying drum connected to a controller, and the controller controls the electromagnetic heating drying drum to rotate for stir-frying and drying tobacco particles.

10. A system for preparing heated cigarette cores according to claim 9, characterized in that: A plurality of frying plates are movably arranged in the electromagnetic heating drying cylinder of the drying device, and a controller is connected to the drying device to control and adjust the angles of the plurality of frying plates.

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