Anti-adhesion device and use method

Abstract

The invention belongs to the technical field of tobacco processing, and discloses an anti-adhesion device and a use method. The expansion unit comprises a heating and humidifying structure and a vibration conveyor, the vibration conveyor comprises a groove body and an upper cover covering the groove body, the upper cover is provided with a blanking port, and tobacco materials enter the groove body through the blanking port; the anti-adhesion device comprises a steam heating assembly and a lifting assembly, and the lifting assembly is used for lifting the groove body so as to drive the groove body to move in the direction close to the upper cover. The steam heating assembly comprises a steam generator and a heat transfer pipeline fixed outside the tank body, and the steam generator is used for conveying steam to the heat transfer pipeline to heat the tank body. The distance between the groove body and the upper cover is shortened through the lifting assembly, so that tobacco materials make contact with the inner surface of the groove body as much as possible. The steam generator is used for conveying steam to the heat transfer pipeline to heat the tank body, the temperature difference between the heated tank body and the smoke materials is small, and the problem that a large amount of smoke materials adhere to the inner surface of the tank body is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing technology, and in particular to an anti-adhesion device and its usage method. Background Technology

[0002] In cigarette production, the SIROX (Steam Injection Roller Extrusion) expansion unit is a device used to heat and humidify tobacco and stems. Appropriate heating and humidification can keep the tobacco in its best condition and help balance the taste.

[0003] In the prior art, the SIROX expansion unit includes a heating and humidification structure and a vibrating conveyor. The heating and humidification structure uses high-temperature and high-humidity steam to treat the tobacco. The heated and humidified tobacco is then conveyed by the vibrating conveyor to the tobacco drying machine for further processing. Due to the large temperature difference between the heated and humidified tobacco and the vibrating conveyor's tank, a large amount of tobacco will condense and adhere to the inner surface of the tank.

[0004] That is, in the existing SIROX expansion unit, due to the large temperature difference between the heated and humidified smoke and the vibrating conveyor trough, a large amount of smoke will condense and adhere to the inner surface of the trough. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-adhesion device and a method of use to solve the problem that the large temperature difference between the heated and humidified smoke and the vibrating conveyor trough causes a large amount of smoke to condense and adhere to the inner surface of the trough.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This invention provides an anti-adhesion device. The expansion unit includes a heating and humidifying structure and a vibrating conveyor. The vibrating conveyor includes a trough and a cover on the trough. The relative position of the cover and the trough is adjustable. The cover has a discharge port corresponding to the discharge port of the heating and humidifying structure. The smoke enters the trough from the discharge port and through the discharge port. The anti-adhesion device includes a steam heating component and a lifting component. The lifting component is used to lift the trough to move it closer to the cover. The steam heating component includes a steam generator and a heat transfer pipe fixed to the outside of the trough. The steam generator is used to supply steam to the heat transfer pipe to heat the trough.

[0008] As an optional technical solution for an anti-adhesion device, the heat transfer pipe includes a side heating coil and a bottom heating coil arranged in parallel. The side heating coil is used to fix the outer side of the tank body, and the bottom heating coil is used to fix the outer bottom surface of the tank body.

[0009] As an optional technical solution for the anti-adhesion device, the side heating coil is an S-shaped coil; and / or, the bottom heating coil is an Archimedes spiral coil.

[0010] As an optional technical solution for the anti-adhesion device, it also includes a thin-film temperature sensing element. Both the side heating coil and the bottom heating coil are equipped with corresponding thin-film temperature sensing elements, which are used to measure the steam temperature.

[0011] As an optional technical solution for an anti-adhesion device, the lifting assembly includes a support member, a lifting member, and an auxiliary plate. The auxiliary plate is disposed at one end of the support member via the lifting member, and the other end of the support member is used to support the ground. The auxiliary plate is used to connect the trough. The lifting member extends and retracts to drive the auxiliary plate to move relative to the support member, and the movement of the auxiliary plate drives the trough to move.

[0012] As an optional technical solution for the anti-adhesion device, the lifting assembly further includes a limiting member, one end of which is fixed to the support member, and the other end of which is used to block the auxiliary plate to limit the maximum distance between the auxiliary plate and the support member.

[0013] As an optional technical solution for an anti-adhesion device, at least two lifting members are arranged side by side with intervals, and the limiting member is located between two adjacent lifting members.

[0014] As an optional technical solution for the anti-adhesion device, the lifting assembly further includes at least one set of mounting plates, with two mounting plates in the same set respectively fixed to the support member and the auxiliary plate, and the lifting member disposed between the two mounting plates in the same set.

[0015] This invention provides a method of using an anti-adhesion device, which includes the following steps:

[0016] Raise the groove to shorten the distance between the groove and the top cover until a preset distance is reached;

[0017] Steam is supplied to the heat transfer pipe until the heat transfer pipe reaches the preheating temperature, and the outlet of the heating and humidifying structure is opened so that the smoke material enters the tank from the outlet through the discharge port.

[0018] As an optional technical solution for using an anti-adhesion device, before reaching the preheating temperature, the heat transfer pipe maintains a constant temperature for at least a preset time after each predetermined temperature gradient value.

[0019] Beneficial effects:

[0020] This invention provides an anti-adhesion device. The expansion unit includes a heating and humidifying structure and a vibrating conveyor. The vibrating conveyor includes a trough and a cover on the trough. The relative position of the cover and the trough is adjustable. The cover has a discharge port corresponding to the discharge port of the heating and humidifying structure. The tobacco enters the trough from the discharge port and through the discharge port. The anti-adhesion device includes a steam heating component and a lifting component. The lifting component lifts the trough, causing it to move closer to the cover. The steam heating component includes a steam generator and a heat transfer pipe fixed outside the trough. The steam generator supplies steam to the heat transfer pipe to heat the trough. By setting up the anti-adhesion device and using the lifting component to lift the trough, the trough moves closer to the cover, shortening the distance between the trough and the cover, thus maximizing the contact between the tobacco and the inner surface of the trough. The steam generator supplies steam to the heat transfer pipe to heat the trough. The temperature difference between the heated trough and the tobacco is small, effectively solving the problem of a large amount of tobacco adhering to the inner surface of the trough.

[0021] This invention provides a method for using an anti-adhesion device. By raising the tank body, the distance between the tank body and the top cover is shortened until a preset distance is reached. Then, steam is supplied to the heat transfer pipe until the heat transfer pipe reaches the preheating temperature. The outlet of the heating and humidifying structure is opened so that the smoke material enters the tank body from the outlet through the drop port. The method of raising and steam heating actively intervenes in the conveying of the smoke material by the vibrating conveyor. The structure is simple and reliable, and the maintenance cost is low. Attached Figure Description

[0022] Figure 1 This is a partial structural schematic diagram of the vibrating conveyor provided in an embodiment of the present invention from a first-view perspective;

[0023] Figure 2 This is a partial structural schematic diagram of the vibrating conveyor provided in an embodiment of the present invention from a second perspective;

[0024] Figure 3 This is a schematic diagram of the structure of the tank and the side heating coil provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the tank and the bottom heating coil provided in an embodiment of the present invention;

[0026] Figure 5 This is a first structural schematic diagram of the lifting component provided in an embodiment of the present invention;

[0027] Figure 6 This is a partial structural schematic diagram of the lifting component provided in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the second structure of the lifting component provided in an embodiment of the present invention;

[0029] Figure 8This is a schematic diagram of the structure of the tank, the spray pipe, and the fixing plate provided in an embodiment of the present invention;

[0030] Figure 9 This is a partial structural schematic diagram of the lifting front groove provided in an embodiment of the present invention;

[0031] Figure 10 This is a partial structural diagram of the raised tank provided in an embodiment of the present invention.

[0032] In the picture:

[0033] 11. Tank body; 111. Main tank body; 112. Tank body support; 113. Reinforcing rib; 12. Top cover; 121. Material discharge port; 14. Sealing spring; 15. Sealing plate;

[0034] 20. Steam heating unit; 21. Side heating coil; 22. Bottom heating coil;

[0035] 30. Lifting assembly; 31. Support component; 32. Lifting component; 33. Auxiliary plate; 34. Limiting component; 35. Mounting plate; 36. First adjusting plate; 37. Second adjusting plate;

[0036] 41. Blowpipe; 42. Fixing plate. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0041] See Figure 1 and Figure 2 The expansion unit includes a heating and humidifying structure and a vibrating conveyor. The vibrating conveyor includes a trough 11 and an upper cover 12 covering the trough 11. The upper cover 12 is adjustable relative to the trough 11. The upper cover 12 is provided with a discharge port 121 corresponding to the discharge port of the heating and humidifying structure. The smoke enters the trough 11 from the discharge port through the discharge port 121.

[0042] Specifically, the upper cover 12 includes a main cover plate and a discharge plate. The main cover plate has an opening, and the discharge plate is fixed to the main cover plate. The discharge plate has a discharge port 121, which is located below the expansion gas lock of the heating and humidifying structure and matches the position of the opening of the main cover plate, so that the heated and humidified smoke enters the tank 11 from the discharge port 121 and the opening of the main cover plate. The main cover plate and the discharge plate can be connected by welding or bolts, or they can be directly set as an integral structure.

[0043] In this embodiment, the trough 11 includes a main trough 111 and a trough support 112. The trough support 112 is fixed to the main trough 111, and a main cover plate is placed on the main trough 111. The main trough 111 is connected to the transmission structure of the vibrating conveyor through the trough support 112, and is connected to the excitation device through the transmission structure. The main trough 111 and the main cover plate are sealed together by a sealing spring 14 and a sealing plate 15, and the relative position of the upper cover 12 and the main trough 111 is adjustable. The sealing spring 14 extends vertically, and the sealing plate 15 extends horizontally. One side of the sealing plate 15 is fixed to the main trough 111, and the other side abuts against the side of the sealing spring 14. The sealing spring 14 and the sealing plate 15 can be specifically designed according to the prior art.

[0044] In existing technologies, vibrating conveyors commonly experience tobacco adhesion during production. Specifically, during the tobacco expansion process, the heating and humidifying structure creates a steam environment at a pressure of 2 Bar, with the temperature maintained between 100℃ and 121℃. However, the temperature of the main trough 111 is only comparable to the ambient temperature (maintained between 20℃ and 30℃). When high-temperature tobacco shreds at approximately 65℃ enter the main trough 111 from the discharge port 121 and come into contact with the low-temperature main trough 111, the steam undergoes a rapid phase change and condensation. The resulting liquid condensate combines with the sugars, pectin, and other organic substances contained in the tobacco shreds, forming a viscous interfacial adhesion layer, causing continuous tobacco adhesion.

[0045] There are three traditional methods for handling this issue. The first is to add a guide plate below the discharge port 121. While this reduces adhesion downstream of the guide plate, smoke still adheres near the sealing spring 14 upstream of the guide plate, and the guide plate itself also adheres. The second method is to add anti-adhesion materials, such as mainstream ceramic coating materials and PTFE stainless steel mesh at the sealing spring 14. However, this is not very effective at preventing smoke adhesion, and smoke still adheres to its surface. The third method is to install a blower pipe. However, the blower pipe can only clean the area near the sealing spring 14, and its cleaning effect on the sides of the main tank 111 is not ideal. These three traditional methods are ineffective, therefore a new method is needed to solve the problem of smoke adhesion after heating and humidification.

[0046] like Figures 3 to 6 As shown, this embodiment provides an anti-adhesion device, which includes a steam heating component 20 and a lifting component 30. The lifting component 30 is used to lift the tank 11 so as to move the tank 11 toward the direction of the upper cover 12. The steam heating component 20 includes a steam generator and a heat transfer pipe fixed outside the tank 11. The steam generator is used to deliver steam to the heat transfer pipe to heat the tank 11.

[0047] By setting up an anti-adhesion device, the lifting component 30 is used to lift the tank 11, so that the tank 11 moves towards the upper cover 12, thereby shortening the distance between the tank 11 and the upper cover 12, and thus making the smoke material contact the inner surface of the tank 11 as much as possible; the steam generator is used to deliver steam to the heat transfer pipe to heat the tank 11. The temperature difference between the heated tank 11 and the smoke material is small, which effectively solves the problem of a large amount of smoke material adhering to the inner surface of the tank 11.

[0048] Specifically, the heat transfer pipe includes a side heating coil 21 and a bottom heating coil 22 arranged in parallel. The side heating coil 21 is fixed to the outer side of the tank 11, and the bottom heating coil 22 is fixed to the bottom surface of the tank 11. By setting the side heating coil 21 and the bottom heating coil 22 in parallel, the side heating coil 21 and the bottom heating coil 22 can be controlled independently (i.e., opening and closing, temperature, pressure, and condensate drainage can all be performed independently). The side heating coil 21 heats the tank 11 from the side, and the bottom heating coil 22 heats the tank 11 from the bottom, so that both the sides and the bottom of the tank 11 can be effectively heated, avoiding partial adhesion inside the tank 11 due to uneven heating.

[0049] Optionally, the side heating coil 21 is an S-shaped coil. Using an S-shaped coil on the outer side of the tank 11 can better match the length-to-width ratio of the tank 11, achieving large-area uniform heating.

[0050] Optionally, the bottom heating coil 22 is an Archimedean spiral coil. Using an Archimedean spiral coil on the outer bottom surface of the tank 11 provides a high linear density and a large contact area with the tank 11, resulting in better, more uniform heating over a large area. Specifically, the coil can be continuously bent in a spiral motion, then elastically deformed into a frustum-shaped cone, and finally reshaped to a flat plane to obtain the Archimedean spiral coil, which is easy to process.

[0051] In this embodiment, the main tank 111 has a U-shaped cross-section and is made of stainless steel. The tank support 112 is L-shaped, with one part fixed to the outer surface of the main tank 111 and its two sides respectively attached to the main tank 111 and the side heating coil 21. The other part of the tank support 112 is placed at the bottom of the main tank 111. The bottom heating coil 22 directly contacts the outer bottom surface of the main tank 111. The tank support 112 is also made of a thermally conductive material, including but not limited to stainless steel, and the heat from the side heating coil 21 can be transferred to the main tank 111 through the tank support 112. In other embodiments, the side heating coil 21 can also be configured to directly contact the outer surface of the main tank 111.

[0052] join Figure 4The bottom surface of the tank 11 is provided with reinforcing ribs 113, which include transverse reinforcing ribs and longitudinal reinforcing ribs. The two transverse reinforcing ribs and the two longitudinal reinforcing ribs enclose a rectangular accommodating space. The bottom heating coil 22 is disposed in the rectangular accommodating space and is in direct contact with the bottom surface of the tank 11.

[0053] In this embodiment, a total of 6 sets of bottom heating coils 22 are provided along the extending direction of the tank body 11, and the 6 sets of bottom heating coils 22 are evenly arranged; the total length of the bottom heating coils 22 is 2560mm. It can be understood that multiple sets of side heating coils 21 can also be provided along the extending direction of the tank body 11; the specific dimensions of the side heating coils 21 and the bottom heating coils 22 need to be adjusted according to the actual dimensions of the tank body 11.

[0054] To control the heating temperature, the anti-adhesion device also includes a thin-film temperature sensing element. Both the side heating coil 21 and the bottom heating coil 22 are equipped with corresponding thin-film temperature sensing elements, which are used to measure the steam temperature. By setting the thin-film temperature sensing element, the steam temperature in the side heating coil 21 and the bottom heating coil 22 can be accurately measured individually, allowing for better monitoring and control of the heating temperature on the sides and bottom of the tank 11, resulting in more uniform heating of the tank 11.

[0055] Thin-film temperature sensing elements can be thin-film thermocouples or thin-film resistance thermometers. For example, a thin-film thermocouple generates a thermoelectric potential in a metal material at high steam temperatures, which is then amplified and converted into a temperature value. A thin-film resistance thermometer utilizes the characteristic that resistance changes with temperature, measuring the change in resistance to reflect temperature changes. In this embodiment, a PT1000 thin-film temperature sensing element with a resolution of 0.1℃ (i.e., a high-precision temperature sensor) is configured, and a millisecond-level temperature closed-loop control system is constructed in conjunction with a PID adaptive algorithm, controlling temperature fluctuations within an accuracy range of ±0.5℃ throughout the entire process. The PID adaptive algorithm is a control method that dynamically adjusts the parameters of the PID controller to adapt to changes in the controlled object.

[0056] See Figure 5 and Figure 6 The lifting assembly 30 includes a support member 31, a lifting member 32, and an auxiliary plate 33. The auxiliary plate 33 is disposed at one end of the support member 31 via the lifting member 32. The other end of the support member 31 is used to support the ground. The auxiliary plate 33 is used to connect the trough 11. The lifting member 32 extends and retracts to drive the auxiliary plate 33 to move relative to the support member 31. The movement of the auxiliary plate 33 drives the trough 11 to move.

[0057] In this embodiment, the support member 31 is a support column, and the auxiliary plate 33 is connected to the top of the support column through the lifting member 32. The lifting member 32 is a pneumatic spring; the auxiliary plate 33 can be fixed to the bottom of the main tank 111 or to the tank support 112.

[0058] By setting a support member 31, the bottom of the support member 31 is supported on the ground, and the top of the support member 31 is provided with a lifting member 32 and an auxiliary plate 33. The auxiliary plate 33 is used to connect with the trough 11. The lifting member 32 is extended and retracted to drive the auxiliary plate 33 to move, thereby driving the trough 11 to move, thereby changing the distance between the trough 11 and the top cover 12, so that the smoke material is in contact with the inner surface of the trough 11 as much as possible, especially the inner side of the trough 11.

[0059] To limit the extreme position of the auxiliary plate 33, the lifting assembly 30 also includes a limiting member 34. One end of the limiting member 34 is fixed to the support member 31, and the other end of the limiting member 34 is used to stop the auxiliary plate 33 to limit the maximum distance between the auxiliary plate 33 and the support member 31.

[0060] In this embodiment, the limiting member 34 is also fixed to the top of the support column, and the limiting member 34 is located between the two lifting members 32; the limiting member 34 and the auxiliary plate 33 both have a U-shaped cross section.

[0061] By setting the limiting component 34 to limit the maximum distance between the auxiliary plate 33 and the support component 31, the distance between the main tank 111 and the upper cover 12 is indirectly limited, ensuring that the movement distance of the auxiliary plate 33 is controllable and that the tank 11 has suitable space to accommodate the smoke material.

[0062] Optionally, at least two lifting members 32 are arranged side by side at intervals, and the limiting member 34 is located between two adjacent lifting members 32. By setting two lifting members 32 and placing the limiting member 34 between two adjacent lifting members 32, the lifting members 32 support the auxiliary plate 33 at at least two different positions, and limit the position of the auxiliary plate 33 after lifting between two adjacent lifting members 32. This helps to ensure the accuracy of the limiting of the auxiliary plate 33, thereby accurately controlling the lifting distance of the tank 11.

[0063] Optionally, the lifting assembly 30 further includes at least one set of mounting plates 35, with two mounting plates 35 in the same set fixed to the support member 31 and the auxiliary plate 33 respectively, and the lifting member 32 disposed between the two mounting plates 35 in the same set. By setting mounting plates 35 on the support member 31 and the auxiliary plate 33, and placing the lifting member 32 between the two mounting plates 35, the maintenance and replacement of the lifting member 32 is facilitated.

[0064] See Figure 6 In one embodiment, two lifting members 32 are arranged side-by-side with a gap between them, and a limiting member 34 is disposed between the two lifting members 32. Two sets of mounting plates 35 are correspondingly provided. A cylindrical protrusion is provided on the side of the mounting plate 35 near the lifting member 32, and a portion of the lifting member 32 is fitted over the outer side of the cylindrical protrusion. By providing the cylindrical protrusion, the extension and retraction direction of the lifting member 32 is restricted, preventing the auxiliary plate 33 and the groove 11 from shifting due to changes in the extension and retraction direction of the lifting member 32. In other embodiments, multiple lifting members 32 may also be provided.

[0065] join Figure 7 In one embodiment, four lifting members 32 are arranged side by side at intervals, and a limiting member 34 is arranged between the two lifting members 32 located in the middle. The mounting plate 35 is provided with four sets accordingly.

[0066] In this embodiment, each lifting member 32 operates independently. In other embodiments, the movement of multiple lifting members 32 can also be operated simultaneously. By operating each lifting member 32 independently, the operation is flexible and facilitates individual position calibration.

[0067] Optionally, the lifting assembly 30 further includes a first adjusting plate 36, which is disposed between the support member 31 and the mounting plate 35. By setting the first adjusting plate 36 between the support member 31 and the mounting plate 35, and selecting a first adjusting plate 36 of appropriate thickness as needed, the mounting plate 35 can be made to reach the required setting height. The structure is simple and highly adaptable.

[0068] Optionally, the lifting assembly 30 further includes a second adjusting plate 37, which is disposed between the limiting member 34 and the support member 31. By providing the second adjusting plate 37 between the support member 31 and the limiting member 34, and selecting a first adjusting plate 36 of appropriate thickness as needed, the limiting member 34 can be made to reach the required setting height.

[0069] In this embodiment, two mounting plates 35 in the same group, one of which is fixed to the auxiliary plate 33 by bolts, and the other is fixed to the first adjusting plate 36 by bolts; the limiting member 34 is fixed to the second adjusting plate 37 by bolts, and the first adjusting plate 36 and the second adjusting plate 37 are also fixed to the support member 31 by bolts; multiple first adjusting plates 36 can be stacked and fixed, and multiple second adjusting plates 37 can also be stacked and fixed.

[0070] See Figure 8 The anti-adhesion device also includes a blower, a blow pipe 41 and a fixing plate 42. The blow pipe 41 is fixed to the upper cover 12 by the fixing plate 42. The blower is used to supply air to the blow pipe 41 to blow the smoke material in the tank 11.

[0071] In this embodiment, the blow pipe 41 is fixed to the upper cover 12 by the fixing plate 42, and the blow pipe 41 is arranged along the edge of the upper cover 12. The extension direction of the blow pipe 41 is the same as the extension direction of the main tank 111. The fixing plate 42 can be welded or snapped to the blow pipe 41 and the upper cover 12. The fixing plate 42 is flat, and the blow pipe 41 is a round pipe. The blow pipe 41 is provided with a blow hole on the side facing the inner bottom surface of the main tank 111, and blow air into the blow pipe 41 to blow smoke.

[0072] This embodiment also provides a method for using an anti-adhesion device, which includes the following steps:

[0073] Step S1: Raise the tank 11 to shorten the distance between the tank 11 and the upper cover 12 until the preset distance is reached.

[0074] See Figure 9 and Figure 10 Before heating, the tank 11 is raised to shorten the distance between the tank 11 and the upper cover 12 until the distance reaches a preset distance, which needs to be designed according to the actual size of the tank 11. In this embodiment, before raising, the distance L1 between the top surface of the main tank 111 and the inner top surface of the upper cover 12 is 70mm; after raising, the raising height is 45mm, and the distance L2 between the top surface of the main tank 111 and the inner top surface of the upper cover 12 is 25mm, which is the preset distance.

[0075] Step S2: Steam is supplied to the heat transfer pipe until the heat transfer pipe reaches the preheating temperature. The outlet of the heating and humidifying structure is opened so that the smoke material enters the tank 11 from the outlet through the discharge port 121.

[0076] In this embodiment, the preheating temperature is higher than the temperature of the flue gas after heating and humidification. For example, when the temperature of the flue gas after heating and humidification is about 80°C, the preheating temperature can be set to 140°C.

[0077] The tank body 11 is raised, and the heating and humidifying structure heats and humidifies the tobacco. Then, the side heating coil 21 and the bottom heating coil 22 are preheated until the preheating temperature is reached. While raising the temperature of the tank body 11, the tank body 11 is kept dry. Then, it is determined whether the temperature of the side heating coil 21 and the bottom heating coil 22 has reached the preheating temperature. If the preheating temperature has not been reached, heating continues. If the preheating temperature has been reached, feeding is allowed, that is, the tobacco is allowed to be discharged from the outlet of the heating and humidifying structure and enter the tank body 11 through the drop outlet 121 and the corresponding opening of the top cover 12.

[0078] Optionally, before reaching the preheating temperature, the heat transfer pipe maintains a constant temperature for at least a preset time after each predetermined temperature gradient increase. By adopting gradient heating and maintaining the temperature for a period of time after each predetermined gradient increase, it is possible to ensure that the heat from the heat transfer pipe is transferred to the tank 11, ensuring heat transfer uniformity and enabling the tank 11 to maintain the same temperature as the heat transfer pipe.

[0079] In this embodiment, the predetermined gradient value is 10°C and the preset time is 10 minutes. In the initial preheating stage, a 10-minute gradient heating program at a high temperature of 140°C is executed to effectively eliminate residual moisture on the surface of the tank 11. After entering the production state (i.e., when the smoke enters the tank 11), the heating constant temperature value of the heat transfer pipe is precisely anchored at the 80°C baseline. This set value is kept within a safe range of 5°C above the critical condensation temperature of the smoke. When the operation is terminated, the hard power-off protection mechanism is automatically triggered.

[0080] By raising the trough 11, the distance between the trough 11 and the upper cover 12 is shortened until a preset distance is reached; then steam is supplied to the heat transfer pipe until the heat transfer pipe reaches the preheating temperature, and the outlet of the heating and humidifying structure is opened so that the tobacco material enters the trough 11 from the outlet through the drop port 121. The method of raising + steam heating actively intervenes in the conveying of tobacco material by the vibrating conveyor, so as to effectively reduce the amount of adhesion. The structure is simple and reliable, and the maintenance cost is low. By installing coil-type steam heating pipes on the side and bottom of the vibrating conveyor trough 11, different temperature controls are achieved by precisely controlling the steam pressure, which greatly reduces the loss of tobacco material, reduces equipment maintenance costs and downtime maintenance time, and achieves precise control of product quality. This is of great significance for the optimization and improvement of tobacco processing technology.

[0081] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An anti-adhesion device, characterized in that, The expansion unit includes a heating and humidifying structure and a vibrating conveyor. The vibrating conveyor includes a trough (11) and a cover (12) covering the trough (11). The relative position of the cover (12) and the trough (11) is adjustable. The cover (12) is provided with a discharge port (121) corresponding to the discharge port of the heating and humidifying structure. The smoke enters the trough (11) from the discharge port through the discharge port (121). The anti-adhesion device includes a steam heating component (20) and a lifting component (30). The lifting component (30) is used to lift the trough (11) to drive the trough (11) to move toward the cover (12). The steam heating component (20) includes a steam generator and a heat transfer pipe fixed outside the trough (11). The steam generator is used to supply steam to the heat transfer pipe to heat the trough (11).

2. The anti-adhesion device according to claim 1, characterized in that, The heat transfer pipe includes a side heating coil (21) and a bottom heating coil (22) arranged in parallel. The side heating coil (21) is used to fix the outer side of the tank (11), and the bottom heating coil (22) is used to fix the bottom of the tank (11).

3. The anti-adhesion device according to claim 2, characterized in that, The side heating coil (21) is an S-shaped coil; and / or, the bottom heating coil (22) is an Archimedes spiral coil.

4. The anti-adhesion device according to claim 2, characterized in that, It also includes a thin-film temperature sensing element. Both the side heating coil (21) and the bottom heating coil (22) are provided with the corresponding thin-film temperature sensing element, which is used to measure the steam temperature.

5. The anti-adhesion device according to claim 1, characterized in that, The lifting assembly (30) includes a support member (31), a lifting member (32), and an auxiliary plate (33). The auxiliary plate (33) is disposed at one end of the support member (31) via the lifting member (32). The other end of the support member (31) is used to support the ground. The auxiliary plate (33) is used to connect the groove (11). The lifting member (32) extends and retracts to drive the auxiliary plate (33) to move relative to the support member (31). The movement of the auxiliary plate (33) drives the groove (11) to move.

6. The anti-adhesion device according to claim 5, characterized in that, The lifting assembly (30) also includes a limiting member (34), one end of which is fixed to the support member (31), and the other end of which is used to block the auxiliary plate (33) to limit the maximum distance between the auxiliary plate (33) and the support member (31).

7. The anti-adhesion device according to claim 6, characterized in that, At least two lifting members (32) are arranged side by side with a gap between them, and the limiting member (34) is located between two adjacent lifting members (32).

8. The anti-adhesion device according to claim 5, characterized in that, The lifting assembly (30) also includes at least one set of mounting plates (35), with two mounting plates (35) in the same set fixed to the support member (31) and the auxiliary plate (33) respectively, and the lifting member (32) disposed between the two mounting plates (35) in the same set.

9. The method of using the anti-adhesion device, characterized in that, The application of the anti-adhesion device as described in any one of claims 1-8 includes the following steps: Raise the groove (11) to shorten the distance between the groove (11) and the upper cover (12) until a preset distance is reached; Steam is supplied to the heat transfer pipe until the heat transfer pipe reaches the preheating temperature, and the outlet of the heating and humidifying structure is opened so that the smoke material enters the tank (11) from the outlet through the discharge port (121).

10. The method of using the anti-adhesion device according to claim 9, characterized in that, Before reaching the preheating temperature, the heat transfer pipe maintains a constant temperature for at least a preset time after each predetermined temperature gradient value.

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