A tobacco drying apparatus

Abstract

The application discloses a tobacco drying device, which comprises a cylinder body, a rotating shaft, a scraper and a connecting rod. The cylinder body has a cylindrical drying cavity, the bottom of the cylinder body is provided with a bottom cover, and the top of the cylinder body is provided with an upper cover. The rotating shaft is arranged in the drying cavity. The scraper comprises an outer scraper and an inner scraper. The outer scraper has a first chamber, and one end of the outer scraper is provided with a first opening which is in communication with the first chamber. The other end of the inner scraper is connected with one end of the connecting rod, and the other end of the connecting rod is connected with the rotating shaft. The inner scraper has a second chamber, and one end of the inner scraper is provided with a second opening which is in communication with the second chamber. One end of the inner scraper extends into the first chamber through the first opening, and the inner scraper moves in the first chamber. The outer scraper is provided with a plurality of uniformly distributed air outlets, and the inner scraper is provided with a plurality of uniformly distributed long holes. Through repeated rotation and change of the scraper, the drying effect and efficiency are improved, the tobacco and airflow can be disturbed and dispersed, the tobacco and airflow are fully contacted, and the drying is uniform.

Description

Technical Field

[0001] This invention belongs to the field of tobacco technology, and specifically relates to a tobacco drying device. Background Technology

[0002] The cigarette manufacturing process involves many steps. After the tobacco is processed into shredded tobacco, it undergoes further processing, including moistening, drying, adding flavorings and ingredients, rolling, and packaging. Among these, the properties of the shredded tobacco are a crucial factor affecting the performance and quality of the cigarettes. In the tobacco processing steps, the drying process has a significant impact. The drying process reduces the moisture content of the tobacco through heating or low-temperature vacuum drying. As the moisture content decreases during drying, other properties of the tobacco also change, such as its filling capacity, shape, color, and flavor. However, existing drying equipment suffers from problems such as uneven drying, low drying efficiency, and poor drying results. Summary of the Invention

[0003] The purpose of this invention is to provide a tobacco drying device that can solve the problems of uneven drying and poor drying effect of tobacco.

[0004] To achieve the above objectives, this application employs the following technical solution:

[0005] A tobacco drying apparatus, comprising:

[0006] The cylinder has a cylindrical drying chamber, a bottom cover at the bottom of the cylinder, and a top cover at the top of the cylinder;

[0007] A rotating shaft is disposed in the drying chamber;

[0008] The lifting plate and connecting rod are provided. The lifting plate includes an outer lifting plate and an inner lifting plate. The outer lifting plate has a first chamber and one end of the outer lifting plate has a first opening that communicates with the first chamber. The other end of the inner lifting plate is connected to one end of the connecting rod, and the other end of the connecting rod is connected to a rotating shaft. Rotation of the rotating shaft can rotate the lifting plate.

[0009] The inner plate has a second chamber, and one end of the inner plate has a second opening communicating with the second chamber. One end of the inner plate extends into the first chamber through the first opening, and the inner plate can move in the first chamber.

[0010] The outer baffle plate has multiple evenly distributed air outlets, and the inner baffle plate has multiple evenly distributed elongated holes. When the inner baffle plate moves to the far left, the outer baffle plate is in the first state, and the air outlets and elongated holes are staggered. As the inner baffle plate extends more and more into the outer baffle plate, when the outer baffle plate moves to a certain position, the outer baffle plate 3 is in the second state, and the air outlets and elongated holes overlap.

[0011] The rotating shaft has a cavity, and the connecting rod has an air passage. The cavity and the air passage are connected. Gas with a certain temperature enters the air passage through the cavity, then enters the second chamber of the inner baffle plate, and then enters the first chamber through the second chamber. The gas then flows out from the air outlet. The gas can dry the tobacco on the baffle plate.

[0012] When the outer baffle is in the first state, the vent hole and the elongated hole are staggered. The gas enters the air passage through the cavity, then enters the second chamber on the inner baffle, enters the first chamber through the second chamber, and then the gas flows out from the vent hole.

[0013] When the outer plate is in the second state, some gas can flow out through the second chamber from the outlet hole that coincides with the elongated hole.

[0014] Optionally, both the first chamber and the second chamber can be rectangular parallelepipeds. The inner sidewall of the second chamber can be provided with a limiting groove. The sidewall edge of the inner lifting plate can be provided with a first limiting platform at the position corresponding to the limiting groove. During the movement of the outer lifting plate relative to the inner lifting plate, it is limited by the first limiting platform.

[0015] A second limiting platform can be provided on the side wall edge of the inner plate near the pivot for limiting.

[0016] Optionally, a guide rail may be provided on the inner wall of the second chamber, and a guide groove may be provided on the outer wall of the inner lifting plate at the position corresponding to the guide rail. The guide rail is located in the guide groove, and the guide rail and guide groove extend along the axial direction of the connecting rod.

[0017] Optionally, evenly distributed air holes can be provided on the rotating shaft, and the gas in the cavity of the rotating shaft can flow out through the air holes, thereby drying the tobacco.

[0018] Optionally, a cylinder can be installed in the cavity of the rotating shaft. A perforated hole can be provided on the side wall of the cylinder at the position corresponding to the air hole. A vertical long groove can be provided on the side wall of the cavity of the rotating shaft. A bolt can be installed on the outer side wall of the cylinder at the position corresponding to the adjustment groove. The outer end of the bolt passes through the long groove. A nut can be fitted on the position where the outer end of the bolt protrudes from the long groove. The bolt can move along the axial direction of the rotating shaft in the long groove. The movement of the bolt can drive the cylinder to move up and down, so that the relative position between the perforated hole and the air hole changes, thereby making the perforated hole and the air hole misaligned, or making the perforated hole and the air hole partially or completely overlap. It can be fixed by tightening the nut, so that the cylinder is firm and stable.

[0019] Optionally, a sealing layer can be provided on the inner wall of the cavity of the rotating shaft around the outer periphery of the air hole. The sealing layer can be an elastic layer and can have a sealing and buffering function.

[0020] Optionally, the inner lifting plate has a discharge port at one end near the rotating shaft, and the outer lifting plate has a drive rod, one end of which is connected to the side wall of the outer lifting plate, and the other end of which is connected to the baffle.

[0021] When the external baffle is in the first state, the baffle blocks the outlet, making the outlet sealed and preventing gas from flowing out through the outlet;

[0022] When the external baffle is in the second state, the baffle detaches from the outlet, causing the outlet to open and allowing gas to flow out.

[0023] Optionally, the second limiting platform is provided with a limiting hole, and one end of the drive rod passes through the limiting hole. The limiting platform can limit the drive rod to move stably, and can also limit the external lifting plate.

[0024] Optionally, the inner baffle plate has an elastic sealing layer around the outlet at the end near the rotating shaft.

[0025] Optionally, there are multiple copying plates, which are evenly spaced along the axial direction of the rotating shaft.

[0026] The beneficial effects of this invention are:

[0027] This device utilizes the repeated rotation and changes of the lifting plates to ensure the effective execution of the entire drying process, thereby improving the drying effect and efficiency. During the process of the lifting plates lifting the tobacco shreds, gas drying is effectively utilized. The lifting plates can function as a structure for lifting or stirring the tobacco shreds, and simultaneously as a structure for providing gas for drying. This allows the lifting plates to simultaneously achieve multiple drying effects. The lifting plates employ two drying methods: surface heat drying on the lifting plates and airflow drying using the gas exiting the plates. During the rotation of the lifting plates, the tobacco shreds and airflow are also disturbed and dispersed, ensuring full contact between the tobacco shreds and the airflow, improving the drying effect and ensuring uniform drying. Attached Figure Description

[0028] Figure 1 This is a structural diagram of a reverse engineering board;

[0029] Figure 2 A schematic diagram showing one end of the inner baffle plate extending into the first chamber, with the vent coinciding with the elongated hole;

[0030] Figure 3 This is a schematic diagram of the drying device;

[0031] Figure 4 This is a structural diagram of a reverse engineering board;

[0032] Figure 5 A schematic diagram showing one end of the inner baffle plate extending into the first chamber, with the vent coinciding with the elongated hole;

[0033] Figure 6 This is a schematic diagram of the drying device;

[0034] Figure 7 This is a schematic diagram of the drying device;

[0035] Figure 8 This is a schematic diagram of a structure where a rotating shaft and a cylinder are fitted together.

[0036] Figure 9 This is a schematic diagram of a bolt in a long slot.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Connecting rod; 2. Inner lifting plate; 3. Outer lifting plate; 21. Long hole; 31. Air outlet; 32. Limiting groove; 41. First limiting platform; 42. Second limiting platform; 50. Rotating shaft; 51. Cylinder; 52. Long groove; 53. Bolt; 54. Nut; 60. Cylinder body; 61. Drying chamber; 71. Drive rod; 72. Baffle plate. Detailed Implementation

[0039] 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, not all, of the embodiments of the present invention. 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.

[0040] like Figures 1 to 9 As shown, the tobacco drying device includes:

[0041] The cylinder 60 has a cylindrical drying chamber 61. The bottom of the cylinder 60 has a bottom cover and the top of the cylinder 60 has an upper cover. The tobacco can be put in by opening the upper cover and the tobacco can be discharged by opening the bottom cover after drying.

[0042] A rotating shaft 50 is disposed in the drying chamber 61;

[0043] The device includes a lifting plate and a connecting rod 1. The lifting plate comprises an outer lifting plate 3 and an inner lifting plate 2. The outer lifting plate 3 has a first chamber, and one end of the outer lifting plate 3 has a first opening communicating with the first chamber. The other end of the inner lifting plate 2 is connected to one end of the connecting rod, and the other end of the connecting rod is connected to a rotating shaft 50. Rotation of the rotating shaft 50 can rotate the lifting plate. Multiple lifting plates are arranged at even intervals along the axial direction of the rotating shaft. The length of the lifting plate in the axial direction of the rotating shaft is less than the length of the rotating shaft, which can be 10-30 cm.

[0044] The inner plate 2 has a second chamber, and one end of the inner plate 2 has a second opening communicating with the second chamber. One end of the inner plate 2 extends into the first chamber through the first opening, and the inner plate 2 can move within the first chamber. The outer plate 3 has multiple evenly distributed air outlets 31, which can be circular, elliptical, rectangular, square, elongated, etc. The inner plate 2 has multiple evenly distributed elongated holes 21. When the inner plate 2 moves to the leftmost position, the outer plate 3 is in a first state, and the air outlets and elongated holes are offset. As the outer plate 3 moves to the right, that is, as the inner plate 2 extends more and more into the outer plate 3, when the outer plate 3 moves to a certain position, the outer plate 3 is in a second state, and the air outlets and elongated holes overlap.

[0045] The rotating shaft 50 has a cavity, and the connecting rod 1 has an air passage. The cavity and the air passage are connected. Gas with a certain temperature enters the air passage through the cavity, and then enters the second chamber on the inner baffle plate 2. It then enters the first chamber through the second chamber, and then the gas flows out from the air outlet. The gas can dry the tobacco on the baffle plate. At the same time, the baffle plate also has the same temperature as the gas under the heating of the gas. The heat from the baffle plate can also dry the tobacco.

[0046] When the outer baffle plate 3 is in the first state, the vent hole and the elongated hole are misaligned. The gas enters the air passage through the cavity, then enters the second chamber on the inner baffle plate 2, enters the first chamber through the second chamber, and then the gas flows out from the vent hole.

[0047] When the outer baffle plate 3 is in the second state, as the inner baffle plate 2 extends more and more into the outer baffle plate 3, the width of the baffle plate decreases, and some or all of the air outlets coincide with the elongated holes. Gas enters the air passage through the cavity and then enters the second chamber of the inner baffle plate 2. Some gas can flow out through the second chamber from the air outlet that coincides with the elongated holes, and some gas enters the first chamber. Some gas in the first chamber flows out from the air outlet that never coincides with the elongated holes. The position of gas flowout on the baffle plate changes with the width of the baffle plate.

[0048] Both the first and second chambers can be cuboid in shape. The inner wall of the second chamber can be provided with a limiting groove 32. A first limiting platform 41 can be provided at the position corresponding to the limiting groove 32 on the side wall edge of the inner lifting plate. During the movement of the outer lifting plate relative to the inner lifting plate, it is limited by the first limiting platform 41. A second limiting platform 42 can be provided at the position of the side wall edge of the inner lifting plate near the pivot for limiting. The first limiting platform 41 and the second limiting platform 42 can be elastic platforms, such as rubber platforms, which can have a certain buffering effect. The inner wall of the second chamber and the outer wall of the inner lifting plate can contact and fit together, and can also slide relative to each other.

[0049] The inner wall of the second chamber can be provided with a guide rail, and the outer wall of the inner lifting plate can be provided with a guide groove at the position corresponding to the guide rail. The guide rail is located in the guide groove, and the guide rail and guide groove extend along the axial direction of the connecting rod.

[0050] During the drying process, the cylinder 60 can be placed horizontally or at an angle to the horizontal surface, with the angle being 10-30 degrees.

[0051] During the drying process, the cylinder 60 can be placed horizontally. As the lifting plates rotate with the rotating shaft 50, the outer lifting plate 3 and the inner lifting plate 2 can move relative to each other. There can be multiple lifting plates. During the rotation, some lifting plates are at the lowest position, some are at the highest position, and some can be in the middle position. The lifting plates are used to lift the tobacco shreds, causing the tobacco shreds to disperse or flow.

[0052] When the lifting plate is at the lowest position of the cylinder 60, that is, when the lifting plate at the lowest position of the cylinder 60 is in the first state, the air outlet and the elongated hole are staggered, the gas enters the air passage through the cavity, and then enters the second chamber on the inner lifting plate 2, enters the first chamber through the second chamber, and then the gas flows out from the air outlet.

[0053] The lifting plate, located at the lowest position of the cylinder 60, rotates together with the rotating shaft 50, and the tobacco on the lifting plate also moves. After the lifting plate is in a horizontal position, it continues to move upward. Due to gravity, the outer lifting plate 3 tilts downward relative to the inner lifting plate 2. At this time, the length of one end of the inner lifting plate 2 extending into the first chamber of the outer lifting plate 3 increases, and the tobacco also tilts downward and slides under the influence of gravity. The outer lifting plate 3 tilts downward relative to the inner lifting plate 2 to a certain extent. As the inner lifting plate 2 extends more and more into the outer lifting plate 3, the width of the lifting plate decreases, causing the outer lifting plate 3 to be in a second state, where part or all of the air outlets coincide with the elongated holes, and gas enters through the cavity. The gas flows through the air passage and then into the second chamber of the inner baffle plate 2. Some of the gas can flow out through the second chamber from the air outlet that coincides with the long hole, and some of the gas enters the first chamber. Some of the gas in the first chamber does not flow out from the air outlet that does not coincide with the long hole. The position of the gas flowing out of the baffle plate changes with the width of the baffle plate. Since the tobacco is also moving downward, the tobacco can be dried by the gas flowing out of the air outlet that coincides with the long hole in the second chamber, reducing the outflow of gas from the outermost side of the outer baffle plate 3, making the gas more efficient. The position of the gas outlet can change with the downward movement path of the tobacco, improving the drying effect and the effective utilization rate of the gas.

[0054] The repeated rotation and changes of the lifting plate, as described above, ensure the effective execution of the entire drying process, improving drying efficiency and effectiveness. During the process of the lifting plate lifting the tobacco, gas drying is effectively utilized. The lifting plate serves not only as a structure for lifting or stirring the tobacco but also as a structure for providing gas for drying, allowing it to simultaneously achieve multiple drying effects. The lifting plate employs two drying methods: surface heat drying and airflow drying. During the rotation of the lifting plate, it also disturbs and disperses the tobacco and airflow, ensuring full contact between the tobacco and airflow, improving the drying effect and ensuring uniform drying.

[0055] The rotating shaft 50 can also be provided with evenly distributed air holes, and the gas in the cavity of the rotating shaft 50 can also flow out through the air holes, thereby drying the tobacco.

[0056] A cylinder 51 can be installed in the cavity of the rotating shaft 50. A perforated hole can be installed on the side wall of the cylinder 51 at a position corresponding to the air hole. The cylinder 51 can rotate in the rotating shaft 50. When the cylinder 51 rotates to the first position, the perforated hole and the air hole partially or completely overlap, allowing gas to flow out through the perforated hole and the air hole. When the cylinder 51 rotates to the second position, the perforated hole and the air hole are misaligned, and gas cannot flow out through the perforated hole and the air hole.

[0057] A vertical long groove 52 can be provided on the side wall of the cavity of the rotating shaft 50. A bolt 53 can be provided on the outer side wall of the cylinder 51 at the position corresponding to the adjustment groove. The outer end of the bolt passes through the long groove. A nut 54 can be fitted on the position where the outer end of the bolt protrudes from the long groove. The bolt can move along the axial direction of the rotating shaft 50 in the long groove. The movement of the bolt can drive the cylinder 51 to move up and down, so that the relative position between the hollow hole and the air hole changes, thereby making the hollow hole and the air hole misaligned, or making the hollow hole and the air hole partially or completely overlap. It can be fixed by tightening the nut, so that the cylinder 51 is firm and stable.

[0058] The perforated holes and air holes can be round holes of the same or different diameters. The perforated holes and air holes can have the same shape, such as round, oval, rectangular, square, or strip-shaped.

[0059] A sealing layer can be provided on the inner wall of the cavity of the rotating shaft 50 around the outer periphery of the air hole. The sealing layer can be an elastic layer and can have a sealing and buffering function.

[0060] When the outer baffle 3 is at its leftmost position, the outer edge of the outer baffle 3 can be spaced apart from the inner wall of the drying chamber of the cylinder 60. An elastic layer or elastic airbag can be provided on the outer edge of the outer baffle 3, and the elastic layer or elastic airbag can extend along the outer edge of the outer wall. This prevents the tobacco shreds located between the outer edge of the outer baffle 3 and the inner wall of the drying chamber of the cylinder 60 from being excessively compressed.

[0061] The inner lifting plate 2 has a discharge port at one end near the rotating shaft 50, and the outer lifting plate 3 has a drive rod 71. One end of the drive rod 71 is connected to the side wall of the outer lifting plate 3, and the other end of the drive rod 71 is connected to the baffle 72.

[0062] When the lifting plate is at its lowest position in the cylinder 60, that is, when the lifting plate at its lowest position in the cylinder 60 is in the first state, the baffle 72 blocks the outlet, making the outlet sealed and preventing gas from flowing out through the outlet. When the lifting plate is at its highest or near-highest position in the cylinder 60, the lifting plate is in the second state. When the outer lifting plate 3 is in the second state, the baffle 72 disengages from the outlet, making the outlet open and allowing gas to flow out through the outlet. The second limiting platform 42 is provided with a limiting hole, and one end of the drive rod 71 passes through the limiting hole. The limiting platform can limit the drive rod 71 to move stably and can also limit the outer lifting plate.

[0063] During the process of the lifting plate lifting the tobacco, a small amount of tobacco may enter the first chamber through the air outlet. This tobacco needs to be expelled. When the lifting plate rotates to its highest or near-highest position, and the outer lifting plate 3 is in its second state, the baffle 72 disengages from the outlet, opening the outlet and allowing gas to flow out. The tobacco falls downwards and is expelled along with the gas flowing out of the outlet. An elastic sealing layer is provided around the outlet at the end of the inner lifting plate 2 near the rotating shaft 50 for cushioning and sealing.

[0064] The cavity is connected to the air outlet device by driving the rotating shaft with a drive motor.

[0065] A vibrating ball can be installed in the first chamber of the outer lifting plate. By moving the vibrating ball back and forth in the chamber, when the lifting plate is in the lowest position, it is beneficial for the outer lifting plate to move downward, so that the inner lifting plate can move out of the first chamber and the length of the inner lifting plate in the first chamber is reduced.

[0066] The vibrating ball can be connected to a connection point on the inner wall of the first chamber via a limiting wire. The collision between the vibrating ball and the inner wall of the chamber causes the lifting plate to vibrate, which helps the tobacco stuck on the air outlet to fall out of the air outlet. The length of the limiting wire can be selected as needed. When the length of the limiting wire is short, the vibrating ball can only move in the first chamber; when the length of the limiting wire is long, the vibrating ball can move in both the first and second chambers. The limiting wire and the vibrating ball can be elastic.

[0067] Methods for drying tobacco include:

[0068] The cylinder is placed horizontally or at an angle. The tobacco is added into the drying chamber, the motor is turned on, and the lifting plates are driven to rotate. At the same time, gas is introduced into the cavity of the rotating shaft. The rotation speed of the shaft can be adjusted. After drying is completed, the tobacco is discharged.

[0069] The above description is merely an embodiment of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A tobacco drying apparatus, characterised in that, include: The cylinder has a cylindrical drying chamber, a bottom cover at the bottom of the cylinder, and a top cover at the top of the cylinder; A rotating shaft is disposed in the drying chamber; The lifting plate and connecting rod are provided. The lifting plate includes an outer lifting plate and an inner lifting plate. The outer lifting plate has a first chamber and one end of the outer lifting plate has a first opening that communicates with the first chamber. The other end of the inner lifting plate is connected to one end of the connecting rod, and the other end of the connecting rod is connected to a rotating shaft. The rotation of the rotating shaft causes the lifting plate to rotate. The inner plate has a second chamber, and one end of the inner plate has a second opening communicating with the second chamber. One end of the inner plate extends into the first chamber through the first opening, and the inner plate moves in the first chamber. The outer lifting plate has multiple evenly distributed air outlets, and the inner lifting plate has multiple evenly distributed elongated holes. When the lifting plate is at the lowest position of the cylinder, the outer lifting plate is in the first state, and the air outlets and elongated holes are staggered. When the lifting plate is at the highest or near the highest position of the cylinder, the outer lifting plate is in the second state, and the air outlets and elongated holes overlap. The rotating shaft has a cavity, and the connecting rod has an air passage. The cavity and the air passage are connected. Gas enters the air passage through the cavity, then enters the second chamber of the inner baffle plate, enters the first chamber through the second chamber, and then the gas flows out from the air outlet. The gas dries the tobacco on the baffle plate. When the outer baffle is in the first state, the vent hole and the elongated hole are staggered. The gas enters the air passage through the cavity, then enters the second chamber on the inner baffle, enters the first chamber through the second chamber, and then the gas flows out from the vent hole. When the outer plate is in the second state, some gas flows out through the second chamber from the outlet hole that coincides with the elongated hole.

2. The tobacco drying apparatus according to claim 1, characterized in that, Both the first chamber and the second chamber are rectangular parallelepipeds. The inner sidewall of the second chamber is provided with a limiting groove. The sidewall edge of the inner lifting plate is provided with a first limiting platform at the position corresponding to the limiting groove. During the movement of the outer lifting plate relative to the inner lifting plate, it is limited by the first limiting platform. A second limiting platform is provided on the side wall edge of the inner plate near the pivot for limiting.

3. The tobacco drying apparatus according to claim 2, characterized in that, The inner wall of the second chamber is provided with a guide rail, and the outer wall of the inner lifting plate is provided with a guide groove at the position corresponding to the guide rail. The guide rail is located in the guide groove, and the guide rail and guide groove extend along the axial direction of the connecting rod.

4. The tobacco drying apparatus according to claim 1, characterized in that, The rotating shaft is also equipped with evenly distributed air holes, through which the gas in the cavity of the rotating shaft flows out, thereby drying the tobacco.

5. The tobacco drying apparatus according to claim 4, characterized in that, A cylinder is installed in the cavity of the rotating shaft. A perforated hole is set on the side wall of the cylinder at the position corresponding to the air hole. A vertical long groove is set on the side wall of the cavity of the rotating shaft. A bolt is set on the outer side wall of the cylinder at the position corresponding to the adjustment groove. The outer end of the bolt passes through the long groove. A nut is fitted on the position where the outer end of the bolt protrudes from the long groove. The bolt moves along the axial direction of the rotating shaft in the long groove. The movement of the bolt drives the cylinder to move up and down, so that the relative position between the perforated hole and the air hole changes. This causes the perforated hole and the air hole to be misaligned, or to partially or completely overlap. The cylinder is fixed by tightening the nut.

6. The tobacco drying apparatus according to claim 5, characterized in that, A sealing layer is provided on the inner wall of the cavity of the rotating shaft around the outer periphery of the air hole. The sealing layer is an elastic layer and has the functions of sealing and buffering.

7. The tobacco drying apparatus according to claim 2, characterized in that, The inner lifting plate has a discharge port at one end near the rotating shaft, and the outer lifting plate has a drive rod. One end of the drive rod is connected to the side wall of the outer lifting plate, and the other end of the drive rod is connected to the baffle. When the external baffle is in the first state, the baffle blocks the outlet, making the outlet sealed and preventing gas from flowing out through the outlet; When the external baffle is in the second state, the baffle plate disengages from the outlet, causing the outlet to open and the gas to flow out through the outlet.

8. The tobacco drying apparatus according to claim 7, characterized in that, The second limiting platform is provided with a limiting hole, and one end of the drive rod passes through the limiting hole. The limiting platform not only limits the drive rod to move stably, but also limits the external lifting plate.

9. The tobacco drying apparatus according to claim 1, characterized in that, An elastic sealing layer is provided around the outlet at the end of the inner baffle plate near the rotating shaft.

10. The tobacco drying apparatus of claim 7, wherein, The number of the copying plates is multiple, and the multiple copying plates are evenly spaced along the axial direction of the rotating shaft.

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