Automatic Burley Tobacco Baking Experimental Device

Abstract

This utility model relates to the technical field of tobacco processing equipment, and provides an automatic burley tobacco roasting experimental device. According to an embodiment of this application, the automatic burley tobacco roasting experimental device includes: a roasting tank with an air inlet at the top and an exhaust outlet at the bottom; a medium circulation component connecting the air inlet and exhaust outlet to form a circulation loop; and a flow equalization component disposed inside the roasting tank to evenly disperse the gas entering from the air inlet to the area below the flow equalization component. The automatic burley tobacco roasting experimental device according to this application utilizes the superheated steam used in the roasting tank through the medium circulation component, and the flow equalization component achieves uniform steam distribution within the roasting tank, avoiding the problem of uneven heating of tobacco leaves or shreds, improving the energy utilization efficiency of the automatic burley tobacco roasting experimental device, and improving the actual drying quality of the tobacco shreds.

Description

Technical Field

[0001] This utility model relates to the field of tobacco processing equipment technology, and in particular to an automatic roasting experimental device for Burley tobacco. Background Technology

[0002] In the process of preparing tobacco leaves or shredded tobacco, most of the time it is necessary to use a Burley tobacco roaster for heating and roasting to reduce the roasting time of tobacco leaves or shredded tobacco and improve roasting efficiency.

[0003] Burley tobacco processing technology is one of the most critical core technologies in blended cigarettes. The processing effect directly affects the style characteristics and taste of the blended product. The level of burley tobacco processing technology, to a certain extent, measures the technological content and market competitiveness of a blended product. Research on burley tobacco processing technology generally involves the study of the feeding system and roasting process. Various specifications of burley tobacco roasting experimental devices have emerged on the market to meet the diverse processing technology needs of burley tobacco. Traditional automatic burley tobacco roasting experimental devices include a roasting bellows and a tobacco conveying mechanism. During the roasting process, the tobacco conveying mechanism transports the tobacco to the roasting bellows, which then supplies hot air to roast the tobacco. The tobacco conveying mechanism then transports the roasted tobacco away from the roasting bellows. In practical applications, the hot air from the roasting bellows is delivered into the roasting tank through the insertion hole, quickly heating the tobacco leaves or shreds inside. However, traditional automatic burley tobacco roasting experimental devices have poor energy efficiency and inconsistent actual drying quality of the tobacco. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the related art. To this end, this application proposes an automatic roasting experimental device for burley tobacco to solve the defects of existing automatic roasting experimental devices for burley tobacco, namely poor energy utilization efficiency and inconsistent actual drying quality of tobacco shreds.

[0005] The automatic roasting experimental apparatus for burley tobacco according to the embodiments of this application includes:

[0006] A baking jar, wherein the top of the baking jar is provided with an air inlet and the bottom of the baking jar is provided with an exhaust outlet;

[0007] A medium circulation assembly connects the air inlet and the exhaust outlet to form a circulation loop;

[0008] A flow equalization component is located inside the baking tank and is used to evenly distribute the gas entering from the air inlet to the area below the flow equalization component.

[0009] According to the automatic burley tobacco roasting experimental device of this application embodiment, the superheated steam used in the roasting tank is recycled through the medium circulation component, and the flow equalization component realizes the uniform distribution of steam in the roasting tank, avoiding the problem of uneven local heating of tobacco leaves or shreds, improving the energy utilization efficiency of the automatic burley tobacco roasting experimental device, and improving the actual drying quality of tobacco shreds.

[0010] According to one embodiment of this application, the medium circulation assembly includes a steam generator and a circulating fan, the outlet of the steam generator being connected to the air inlet; the inlet of the circulating fan being connected to the exhaust port, and the inlet and outlet of the circulating fan being connected to the inlet of the steam generator.

[0011] According to one embodiment of this application, the medium circulation assembly includes a humidity regulation module disposed on the circulation loop for monitoring and regulating gas humidity.

[0012] According to one embodiment of this application, the flow equalization assembly includes a first flow equalization plate and a second flow equalization plate. The first flow equalization plate is fixedly installed on the upper part of the baking tank. The first flow equalization plate is provided with a flow equalization cavity, an air supply hole, and a plurality of air outlet holes. The air supply hole is provided on the top surface of the first flow equalization plate, and the air outlet holes are provided on the bottom surface of the first flow equalization plate. The air supply hole and the air outlet holes communicate with the flow equalization cavity. The flow equalization assembly includes a second flow equalization plate, which is provided below the first flow equalization plate. The second flow equalization plate is provided with a plurality of uniformly distributed flow equalization micropores.

[0013] According to one embodiment of this application, at least one of the air outlet and the flow equalization micropores has a smaller diameter along the extension direction.

[0014] According to one embodiment of this application, the diameter of the air outlet is 3mm-5mm, and the diameter of the flow equalization micropore is 1mm-2mm.

[0015] According to one embodiment of this application, a conveyor belt is included, and the number of baking tanks is multiple, with the conveyor belt sequentially passing under the flow equalization component.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a front view of an automatic roasting experimental device for burley tobacco provided in one embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of an automatic roasting experimental device for burley tobacco provided in one embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the internal structure of an automatic roasting experimental device for burley tobacco provided in another embodiment of the present invention.

[0021] Figure label:

[0022] 1. Baking tank; 2. First flow equalization plate; 21. Flow equalization cavity; 22. Air supply port; 23. Air outlet port; 3. Steam generator; 4. Circulating fan; 5. Second flow equalization plate; 51. Flow equalization micropores; 6. Temperature sensor; 7. Humidity sensor; 8. Steam throttle valve; 9. Infrared moisture monitoring module. Detailed Implementation

[0023] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0024] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, 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 embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections, wherein a fixed connection can include 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0026] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0028] The following is combined with Figures 1 to 3 This invention describes an automatic roasting experimental apparatus for Burley tobacco.

[0029] The automatic roasting experimental apparatus for burley tobacco according to the embodiments of this application includes:

[0030] Baking jar 1, wherein the top of the baking jar 1 is provided with an air inlet and the bottom of the baking jar 1 is provided with an exhaust outlet;

[0031] A medium circulation assembly connects the air inlet and the exhaust outlet to form a circulation loop;

[0032] A flow equalization component is disposed inside the baking tank 1 to uniformly disperse the gas entering from the air inlet to the area below the flow equalization component.

[0033] According to the automatic burley tobacco roasting experimental device of this application embodiment, the superheated steam used in the roasting tank 1 is recycled through the medium circulation component, and the flow equalization component realizes the uniform distribution of steam in the roasting tank 1, avoiding the problem of uneven local heating of tobacco leaves or shreds, improving the energy utilization efficiency of the automatic burley tobacco roasting experimental device, and improving the actual drying quality of tobacco shreds.

[0034] Understandably, the roasting tank 1 is the core component of the entire experimental setup, providing a closed space for roasting Burley tobacco. At the top of the roasting tank 1 is an air inlet, which allows superheated steam, either external or recirculated, to enter and heat the tobacco leaves or shreds. At the bottom of the roasting tank 1 is an exhaust vent, used to expel water vapor generated during the roasting process or used steam, maintaining pressure balance and steam circulation within the roasting tank 1.

[0035] The medium circulation assembly is a key component connecting the air inlet at the top and the exhaust outlet at the bottom of the roasting tank 1, forming a circulation loop. During the roasting process, superheated steam heats the tobacco leaves or shreds, carrying a certain amount of moisture and heat as it exits through the exhaust outlet. The function of the medium circulation assembly is to collect this used steam, process it as necessary (such as removing moisture and replenishing heat), and then return it to the roasting tank 1 through the air inlet, thus achieving steam recycling.

[0036] The flow equalization component is located inside the roasting tank 1. Its main function is to evenly distribute the gas (i.e., superheated steam) entering from the air inlet to the area below the flow equalization component, ensuring that the tobacco leaves or shreds inside the roasting tank 1 are heated uniformly. The flow equalization component is typically designed using a perforated plate, screen, or other structures with uniform distribution characteristics, allowing the steam to be effectively dispersed as it passes through the component, avoiding the problem of uneven heating in certain areas. This uniform heating method helps improve the actual drying quality of the tobacco shreds, resulting in better color, aroma, and taste after roasting.

[0037] According to one embodiment of this application, the medium circulation assembly includes a steam generator 3 and a circulating fan 4, the outlet of the steam generator 3 being connected to the air inlet; the inlet of the circulating fan 4 being connected to the exhaust port, and the inlet and outlet of the circulating fan 4 being connected to the inlet of the steam generator 3.

[0038] According to one embodiment of this application, the medium circulation assembly includes a humidity regulation module disposed on the circulation loop for monitoring and regulating gas humidity.

[0039] According to one embodiment of this application, the flow equalization assembly includes a first flow equalization plate 2 and a second flow equalization plate 5. The first flow equalization plate 2 is fixedly installed on the upper part of the baking tank 1. The first flow equalization plate 2 is provided with a flow equalization cavity 21, an air supply hole 22 and a plurality of air outlet holes 23. The air supply hole 22 is provided on the top surface of the first flow equalization plate 2, and the air outlet holes 23 are provided on the bottom surface of the first flow equalization plate 2. The air supply hole 22 and the air outlet holes 23 communicate with the flow equalization cavity 21. The flow equalization assembly includes a second flow equalization plate 5, which is provided below the first flow equalization plate 2. The second flow equalization plate 5 is provided with a plurality of uniformly distributed flow equalization micropores 51.

[0040] According to one embodiment of this application, at least one of the air outlet 23 and the flow equalization micropore 51 has a smaller diameter along the extension direction.

[0041] According to one embodiment of this application, the diameter of the air outlet 23 is 3mm-5mm, and the diameter of the flow equalization micropore 51 is 1mm-2mm.

[0042] According to one embodiment of this application, a conveyor belt is included, and there are multiple baking tanks 1, with the conveyor belt sequentially passing under the flow equalization component.

[0043] The series arrangement of multiple roasting tanks 1 allows burley tobacco leaves or shreds to undergo different levels of heating treatment at different roasting stages. Parameters such as temperature, humidity, and steam flow rate within each roasting tank 1 can be independently adjusted according to actual needs, thereby achieving more precise roasting control.

[0044] The automatic roasting experimental device for burley tobacco according to the embodiments of this application includes a roasting tank 1, a first flow equalization plate 2, a steam generator 3, and a circulating fan 4. The top of the roasting tank 1 is provided with a plug-in hole, and the bottom of the roasting tank 1 is provided with an exhaust hole. The first flow equalization plate 2 is fixedly installed inside the roasting tank 1. The first flow equalization plate 2 is provided with a flow equalization cavity 21, an air supply hole 22, and several air outlet holes 23. The air supply hole 22 is provided on the top surface of the first flow equalization plate 2, and the air outlet holes 23 are provided on the bottom surface of the first flow equalization plate 2. The air supply hole 22 and the air outlet holes 23 are connected to the flow equalization cavity 21.

[0045] The steam outlet of the steam generator 3 is connected to the air supply port 22 through an air pipe, wherein the air pipe between the steam outlet of the steam generator 3 and the air supply port 22 passes through the insertion hole; the circulating fan 4 is connected to the exhaust port through an air pipe, and the circulating fan 4 is connected to the steam inlet of the steam generator 3 through an air pipe.

[0046] According to the automatic burley tobacco roasting experimental apparatus of this application embodiment, the air supply hole 22 of the first flow equalization plate 2 is connected to the steam outlet of the steam generator 3, which can evenly disperse the superheated steam generated by the steam generator 3 in the roasting tank 1, thereby improving the heating efficiency and heating effect of the roasting tank 1 and avoiding uneven heating of tobacco leaves or shreds. The superheated steam used in the roasting tank 1 is drawn back to the steam generator 3 by the circulating fan 4, which can recycle the heat of the superheated steam and avoid the discharge of superheated steam with a lot of heat, thus reducing the energy consumption of the automatic burley tobacco roasting experimental apparatus.

[0047] The baking tank 1 is the main part of the automatic baking experimental device for burley tobacco. The top of the baking tank 1 is provided with a plug hole for installing a gas pipe to connect to the steam generator 3. The bottom of the baking tank 1 is provided with an exhaust hole for discharging the waste gas generated during the baking process and the superheated steam to be recycled.

[0048] The first flow equalization plate 2 is fixedly installed inside the baking tank 1. The first flow equalization plate 2 includes a flow equalization cavity 21, an air supply port 22, and several air outlet ports 23. The air supply port 22 is located on the top surface of the flow equalization plate and is connected to the steam outlet of the steam generator 3 through an air pipe. The air outlet ports 23 are evenly distributed on the bottom surface of the flow equalization plate to ensure that the steam can be evenly distributed into the baking tank 1. The flow equalization cavity 21 serves as a temporary storage and distribution space for steam, ensuring that the steam reaches a certain pressure and temperature before being supplied.

[0049] Steam generator 3 is used to generate superheated steam. The steam outlet of steam generator 3 is connected to the air supply hole 22 of the first flow equalization plate 2 through an air pipe. The superheated steam generated by steam generator 3 enters the flow equalization cavity 21 through the air pipe, and is then evenly distributed into the baking tank 1 through the air outlet 23.

[0050] The circulating fan 4 is connected to the exhaust port of the baking tank 1 and the steam inlet of the steam generator 3 via a pipe, forming a closed-loop circulation system. The circulating fan 4 draws the superheated steam used in the baking tank 1 back to the steam generator 3 for reheating and recycling. This design not only improves the utilization rate of steam but also significantly reduces energy consumption.

[0051] It is understandable that the design of the equalization cavity 21, air supply hole 22 and air outlet hole 23 of the first equalization plate 2 achieves uniform distribution of steam in the baking tank 1, avoiding the problem of uneven heating of tobacco leaves or tobacco shreds. The uniform distribution and recycling of steam makes the baking process more efficient, shortens the baking time and improves production efficiency.

[0052] According to one embodiment of this application, the first flow equalization plate 2 is fixed to the upper part of the baking tank 1.

[0053] Understandably, when the first flow equalization plate 2 is fixed to the upper part of the roasting tank 1, steam enters the flow equalization cavity 21 through the air supply hole 22 and is then evenly distributed throughout the roasting space through the air outlet 23. Since the flow equalization plate is located at the top, it reduces the condensation and accumulation of steam at the bottom or lower part of the roasting tank 1, thereby ensuring that the steam can contact the tobacco leaves or shreds more effectively and improve heating efficiency.

[0054] According to one embodiment of this application, there are multiple baking tanks 1, the number of first flow equalization plates 2 and circulating fans 4 are set according to the number of baking tanks 1, and the steam outlet of the steam generator 3 is connected to each air supply hole 22 through multiple air pipes respectively.

[0055] Understandably, each baking tank 1 is equipped with a connector and an exhaust port, used for connecting steam pipes and discharging waste gas, respectively. Multiple baking tanks 1 can operate in parallel to increase production capacity. Each baking tank 1 has a first flow equalization plate 2 fixedly installed inside, and each baking tank 1 is equipped with a circulating fan 4, connected to the exhaust port of the baking tank 1 and the steam inlet of the steam generator 3 via air pipes, forming a closed-loop circulation system. The circulating fan 4 draws the used superheated steam from the baking tank 1 back to the steam generator 3 for reheating and recycling.

[0056] The steam outlet of the steam generator 3 is connected to the air supply port 22 of each baking tank 1 through multiple air pipes. Alternatively, multiple air pipes can be connected to the steam outlet of the steam generator 3 through a connecting valve, or the steam generator 3 can have multiple steam outlets, with each air pipe and steam outlet corresponding to the other.

[0057] According to one embodiment of this application, it also includes a second flow equalization plate 5, which is fixedly installed inside the baking tank 1. The second flow equalization plate 5 is located below the first flow equalization plate 2. The second flow equalization plate 5 is provided with a plurality of evenly distributed flow equalization microholes 51, which are connected to the upper air outlet 23 and the lower exhaust port.

[0058] The second flow equalization plate 5 is fixedly installed inside the baking tank 1, located below the first flow equalization plate 2. The second flow equalization plate 5 is provided with a plurality of evenly distributed flow equalization micro-holes 51, which are connected to the upper air outlet 23 and the lower exhaust outlet. Through the flow equalization micro-holes 51, steam can be further evenly dispersed to a lower area of ​​the baking tank 1, achieving multi-stage uniform heating.

[0059] Understandably, by utilizing the uniformly distributed flow equalization micropores 51 on the second flow equalization plate 5, the superheated steam in the roasting tank 1 can be further dispersed, thereby improving the heating efficiency and heating effect of the roasting tank 1 and avoiding uneven heating of tobacco leaves or tobacco shreds in certain areas.

[0060] The diameter of the flow equalization micro-orifice 51 can be the same as the diameter of the air outlet 23, or the diameter of the flow equalization micro-orifice 51 can be smaller than the diameter of the air outlet 23. No specific restrictions are imposed here.

[0061] According to one embodiment of this application, it also includes a temperature sensor 6 and a humidity sensor 7, both of which are fixed on the baking jar 1, with the sensing end of the temperature sensor 6 and the sensing end of the humidity sensor 7 extending into the baking jar 1.

[0062] Temperature sensor 6 is fixed to baking tank 1, with its sensing end extending into the baking tank 1 to monitor temperature changes inside the baking tank 1 in real time. Temperature sensor 6 transmits the monitored temperature data to the control system in real time, so that the control system can adjust the heating power of steam generator 3 according to the preset baking temperature curve.

[0063] Humidity sensor 7 is also fixed to baking tank 1, with its sensing end extending into the baking tank 1 to monitor humidity changes inside the baking tank 1 in real time. Humidity sensor 7 transmits the monitored humidity data to the control system in real time, so that the control system can adjust the steam output of steam generator 3 according to the preset baking humidity requirements.

[0064] Understandably, by using temperature sensor 6 and humidity sensor 7 to monitor the temperature and humidity inside the roasting tank 1 in real time, it is possible to ensure that the temperature and humidity inside the roasting tank 1 are maintained within the set levels, thus preventing the roasted tobacco leaves or shreds from becoming too dry or too wet.

[0065] According to one embodiment of this application, a steam throttle valve 8 is also included, which is installed on the gas pipe between the steam outlet of the steam generator 3 and the air supply hole 22 of the first flow equalization plate 2.

[0066] The steam throttle valve 8 is used to regulate the steam flow rate entering the baking tank 1. By adjusting the opening of the steam throttle valve 8, precise control of the steam can be achieved. By controlling the amount of steam in the baking tank 1 using the steam throttle valve 8, excessive waste of overheated steam can be avoided.

[0067] According to one embodiment of this application, the automatic roasting experimental apparatus for burley tobacco also includes a pressure relief valve (not shown in the figure), and the top of the roasting tank 1 is provided with a pressure relief hole; the pressure relief valve is installed at the pressure relief hole.

[0068] It is understandable that by using a pressure relief valve installed at the pressure relief hole at the top of baking tank 1, the pressure relief valve can be opened when the pressure inside baking tank 1 is too high, thus avoiding danger.

[0069] According to one embodiment of this application, a drain valve (not shown in the figure) is also included. The bottom end of the baking jar 1 is provided with a drain hole, and the drain valve is installed at the drain hole.

[0070] Understandably, the drain valve is used to automatically drain condensate generated during the baking process. The drain valve can be set to manual or automatic control as needed to ensure that condensate is drained in a timely manner, avoiding any impact on baking quality.

[0071] According to one embodiment of this application, the automatic roasting experimental device for burley tobacco includes a conveyor belt and an infrared moisture monitoring module 9. The conveyor belt passes through the lower part of the roasting tank 1, is located below the first flow equalization plate 2, and is located above the exhaust port. The infrared moisture monitoring module 9 is used to detect the tobacco leaf sample at the outlet of the conveyor belt.

[0072] Understandably, the infrared moisture monitoring module 9 can detect the moisture content of roasted tobacco leaves or shredded tobacco. Specifically, it can record the moisture data of the tobacco leaf sample at the discharge port at certain time intervals and transmit the data to the controller. The controller has a target moisture value for the tobacco leaf sample. By comparing the moisture data with the target moisture value, the power of the steam generator can be adjusted in real time to ensure that the subsequent tobacco leaves can obtain suitable roasting humidity, thereby improving the heating efficiency and heating effect of the roasting tank, avoiding uneven heating of tobacco leaves or shredded tobacco, and improving the quality of tobacco production.

[0073] If the moisture content of the tobacco sample is lower than the target moisture content, the power of the steam generator 3 is increased to increase the amount of steam produced and the steam temperature is raised; if the moisture content of the tobacco sample is equal to the target moisture content, the power of the steam generator 3 remains unchanged; if the moisture content of the tobacco sample is higher than the target moisture content, the power of the steam generator 3 is reduced to decrease the amount of steam produced and the steam temperature is lowered.

[0074] It should be noted that, as Figure 3 As shown, the infrared moisture monitoring module 9 is connected to the baking tank 1 and positioned above the conveyor belt. Besides the above implementation, the infrared moisture monitoring module 9 can also be positioned in other locations, as long as its monitoring range is located at the conveyor belt outlet.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A white burley automatic roasting experiment device, characterized in that, include: A baking jar, wherein the top of the baking jar is provided with an air inlet and the bottom of the baking jar is provided with an exhaust outlet; A medium circulation assembly connects the air inlet and the exhaust outlet to form a circulation loop; A flow equalization component is located inside the baking tank and is used to evenly distribute the gas entering from the air inlet to the area below the flow equalization component.

2. The experimental apparatus for automatically roasting a burley tobacco according to claim 1, wherein, The medium circulation assembly includes a steam generator and a circulating fan. The outlet of the steam generator is connected to the air inlet. The inlet of the circulating fan is connected to the exhaust port. The inlet and outlet of the circulating fan are connected to the inlet of the steam generator.

3. The white burley automatic roasting experiment device according to claim 2, characterized in that, The medium circulation component includes a humidity regulation module, which is located on the circulation loop and is used to monitor and regulate the gas humidity.

4. The white burley automatic roasting experiment device according to claim 2, characterized in that, The flow equalization assembly includes a first flow equalization plate and a second flow equalization plate. The first flow equalization plate is fixedly installed on the upper part of the baking tank. The first flow equalization plate is provided with a flow equalization cavity, an air supply hole and a plurality of air outlet holes. The air supply hole is provided on the top surface of the first flow equalization plate and the air outlet holes are provided on the bottom surface of the first flow equalization plate. The air supply hole and the air outlet holes are connected to the flow equalization cavity. The flow equalization assembly includes a second flow equalization plate, which is provided below the first flow equalization plate. The second flow equalization plate is provided with a plurality of evenly distributed flow equalization micropores.

5. The experimental apparatus for automatically roasting a white burley tobacco according to claim 4, wherein, At least one of the air outlet and the flow equalization micropores has a smaller diameter along the extension direction.

6. The experimental apparatus for automatically roasting a white burley tobacco according to claim 5, wherein, The diameter of the air outlet is 3mm-5mm, and the diameter of the flow equalization micropore is 1mm-2mm.

7. The experimental apparatus for automatically roasting a burley tobacco according to any one of claims 1 to 6, wherein Includes a conveyor belt, and there are multiple baking tanks, with the conveyor belt sequentially passing under the flow equalization component.

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