Fermentation device

Abstract

The invention relates to a fermentation device. The fermentation device comprises a bracket, the roller is arranged on the support and can rotate around the axis of the roller, and the interior of the roller is hollow to form a cavity; the heating assembly is used for heating the cavity; the cavity sequentially comprises an applying cavity and a fermenting cavity in the conveying direction of tobacco materials, the roller is provided with a feeding channel and a nozzle, the tobacco materials enter the applying cavity through the feeding channel, the nozzle is used for spraying fermenting liquid into the applying cavity, and a liquid spraying opening of the nozzle and the feeding channel are both communicated with the applying cavity. The application cavity and the fermentation cavity are integrated together, mixing and fermentation of tobacco materials and fermentation liquor can be achieved through the single roller, the risk of fermentation failure caused by frequent stopping of the fermentation device when the fermentation liquor is added is avoided, the fermentation efficiency is improved, and the stability and controllability in the fermentation process are guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of tobacco processing, and in particular to a fermentation device. Background Art

[0002] In the fermentation industry, fermentation equipment is the core equipment, and its performance and function directly affect the quality, output and production efficiency of fermentation products.

[0003] Current fermentation equipment only has basic fermentation capabilities. In some batch-type fermentation systems, each addition of fermentation liquid requires stopping the fermentation process and opening the unit to perform the addition. This not only causes fluctuations in parameters such as fermentation temperature but also introduces foreign bacteria, increasing the risk of fermentation failure. Furthermore, batch-type operation cannot achieve continuous fermentation, resulting in low production efficiency and making it difficult to meet the needs of large-scale industrial production. Summary of the Invention

[0004] Based on this, it is necessary to provide a fermentation device that improves the continuity of the fermentation process.

[0005] The present application provides a fermentation device, comprising a support; a drum, which is arranged on the support and is arranged to rotate around its own axis, and the interior of the drum is hollow to form a cavity; a heating component, which is used to heat the cavity; the cavity includes an application chamber and a fermentation chamber in sequence along the conveying direction of the tobacco material, and the drum is provided with a feed channel for the tobacco material to enter the application chamber and a nozzle for spraying fermentation liquid into the application chamber, and the liquid spray port of the nozzle and the feed channel are both connected to the application chamber.

[0006] In one embodiment, the drum includes an application section and a fermentation section in sequence along its length direction, and both the application section and the fermentation section are gradually inclined downward along the conveying direction of the tobacco material. The inner cavity of the application section is the application chamber, and the inner cavity of the fermentation section is the fermentation chamber.

[0007] In one embodiment, the angle formed between the application section and the horizontal plane is α, the angle formed between the fermentation section and the horizontal plane is β, and the angles α and β satisfy: α>β.

[0008] Furthermore, the included angle α is 5°~20°, and the included angle β is 0°~5°.

[0009] In one embodiment, an air cavity for hot air to enter is provided in the wall of the drum, and the air cavity is located outside the cavity. The heating component includes a steam generator, a first air pipe, a second air pipe for air to enter, and a heat exchanger connected to the steam generator. The air inlet end of the heat exchanger is connected to the air outlet of the second air pipe, and the air outlet end of the heat exchanger is respectively connected to the fermentation chamber and the air cavity through the first air pipe.

[0010] In one embodiment, the fermentation device further comprises an air machine for introducing compressed air into at least the nozzle, and the air machine is connected to the nozzle.

[0011] In one embodiment, the air machine is connected to the inlet of the second air pipe.

[0012] In one embodiment, the fermentation device further includes a drying mechanism for heating the tobacco material. The drying mechanism includes a box body connected to the fermentation chamber. Along the conveying direction of the tobacco material, the box body is located downstream of the fermentation chamber.

[0013] In one embodiment, the drying mechanism includes a receiving plate for receiving tobacco materials, the receiving plate is located in the box body, and through holes are distributed on the receiving plate. The box body is provided with a lower air nozzle at a position below the receiving plate, and an upper air nozzle is provided at a position above the receiving plate. The lower air nozzle and the upper air nozzle are both provided with air ports for spraying toward the receiving plate, and the upper air nozzle and the lower air nozzle are both connected to the first air pipe.

[0014] In one embodiment, the receiving plate is gradually inclined downward along the conveying direction of the tobacco material, and along the conveying direction of the tobacco material, the lower air nozzle is located between the fermentation chamber and the upper air nozzle.

[0015] Compared with the prior art, in the fermentation device provided in the present application, the application chamber and the fermentation chamber are integrated together, and a single roller can achieve the mixing and fermentation of tobacco material and fermentation liquid, avoiding the risk of fermentation failure caused by the need to frequently stop the fermentation device to add fermentation liquid, improving the fermentation efficiency, and ensuring the stability and controllability of the fermentation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A partial cross-sectional view of a fermentation device according to an embodiment of the present application;

[0018] Figure 2 for Figure 1 A partial enlarged view of point I in the middle;

[0019] Figure 3 This is a structural diagram of the receiving plate in this application.

[0020] Reference numerals: 1, bracket; 11, connecting shaft; 2, roller; 20, cavity; 201, application chamber; 202, fermentation chamber; 21, application section; 22, fermentation section; 23, feed channel; 24, nozzle; 241, connecting pipe; 25, air cavity; 26, lifting plate; 27, rake nail; 3, heating assembly; 31, steam generator; 32, first air pipe; 321, main pipe; 322, first branch pipe; 323, second branch pipe; 33, second air pipe; 331, third flow meter ; 332, third solenoid valve; 34, heat exchanger; 4, liquid storage tank; 41, first pipeline; 411, first flow meter; 412, first solenoid valve; 5, air machine; 51, second pipeline; 511, second flow meter; 512, second solenoid valve; 6, driving mechanism; 61, transmission gear; 62, ring gear; 63, motor; 7, drying mechanism; 71, box body; 72, receiving plate; 721, through hole; 73, lower air nozzle; 74, upper air nozzle; 8, discharge vibration trough. DETAILED DESCRIPTION

[0021] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right", "side", "top", "bottom" and similar expressions used in the specification of this application are only used to describe the various example structural parts and elements of this application, but these terms are used here for the purpose of convenience of explanation and are determined based on the example orientations shown in the accompanying drawings, and do not represent the only implementation method. Since the embodiments disclosed in the application can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0024] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] It should be noted that "axial arrangement" means that the overall arrangement direction is along the axial direction, including but not limited to axial extension, and may form an angle with the axial direction.

[0026] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0027] like Figures 1 to 3As shown, the present application discloses a fermentation device. The fermentation device includes a support 1, a drum 2, and a heating assembly 3. The drum 2 is disposed on the support 1 and is arranged to rotate around its own axis. The drum 2 is hollow inside to form a cavity 20.

[0028] like Figure 1 and Figure 2 As shown, the cavity 20 includes an application chamber 201 and a fermentation chamber 202 along the conveying direction of the tobacco material. The drum 2 is provided with a feed channel 23 for the tobacco material to enter the application chamber 201 and a nozzle 24 for spraying fermentation liquid into the application chamber 201. The spray port of the nozzle 24 and the feed channel 23 are both connected to the application chamber 201. The heating assembly 3 is used to heat the cavity 20 to meet the temperature requirements.

[0029] It should be noted that the application chamber 201 and the fermentation chamber 202 are connected in sequence.

[0030] It can be understood that the fermentation device integrates the application chamber 201 and the fermentation chamber 202, and a single roller 2 can achieve the mixing and fermentation of tobacco materials and fermentation liquid, avoiding the risk of fermentation failure caused by the need to frequently stop the fermentation device for adding fermentation liquid, improving the fermentation efficiency, and ensuring the stability and controllability of the fermentation process.

[0031] To transport the tobacco material into the application chamber 201, the fermentation device further includes a feed vibration trough (not shown) disposed in the feed channel 23. This feed vibration trough utilizes the principle of vibration to achieve material transport and is similar to a vibration trough or vibration plate in the prior art, and will not be described in detail in this embodiment.

[0032] The inner walls of the application chamber 201 and the fermentation chamber 202 are both provided with a lifting plate 26 and / or a rake nail 27. Illustratively, the inner walls of the application chamber 201 and the fermentation chamber 202 may be provided with only the lifting plate 26, only the rake nail 27, or both. In this embodiment, the inner walls of the application chamber 201 and the fermentation chamber 202 are both provided with a lifting plate 26 and a rake nail 27. It should be noted that the arrangement of the lifting plate 26 and the rake nail 27 is the same as in the prior art and will not be further described in this embodiment.

[0033] During the rotation of the drum 2, the tobacco material is thrown up by the lifting plate 26 and the rake nail 27. The thrown tobacco material contacts the fermentation liquid sprayed from the nozzle 24, thereby achieving uniform mixing of the fermentation liquid and the tobacco material. The working principle of the lifting plate 26 and the rake nail 27 is the same as that of the prior art and will not be described in detail in this embodiment.

[0034] like Figure 1As shown, the fermentation apparatus further includes a liquid storage tank 4 for storing the fermentation liquid. The liquid storage tank 4 is connected to the nozzle 24 via a first pipe 41. The first pipe 41 is provided with a first flow meter 411 and a first solenoid valve 412 for opening and closing the first pipe 41. The first flow meter 411 cooperates with the first solenoid valve 412 to quantitatively deliver the fermentation liquid into the nozzle 24.

[0035] The drum 2 includes, along its length, an application section 21 and a fermentation section 22. Both sections 21 and 22 are gradually inclined downward along the direction in which the tobacco material is conveyed. The inner cavity of the application section 21 is the application chamber 201, and the inner cavity of the fermentation section 22 is the fermentation chamber 202. In other words, the bottom plates of the application chamber 201 and the bottom plates of the fermentation chamber 202 are both gradually inclined downward along the direction in which the tobacco material is conveyed. This allows the tobacco material in the application chamber 201 to gradually slide down along the bottom plate of the application chamber 201 into the fermentation chamber 202, while the tobacco material in the fermentation chamber 202 gradually slides down along the bottom plate of the fermentation chamber 202.

[0036] Specifically, the angle between the application section 21 and the horizontal plane is α, and the angle between the fermentation section 22 and the horizontal plane is β. The angles α and β satisfy the relationship α>β. This allows the tobacco material mixed with the fermentation liquid in the application chamber 201 to quickly move into the fermentation chamber 202 relative to the fermentation chamber 202.

[0037] Furthermore, angle α is between 5° and 20°, and angle β is between 0° and 5°. Thus, by employing the aforementioned inclination angle range for application section 21, while ensuring mixing of the tobacco material and the fermentation liquid, the mixed tobacco material can enter fermentation chamber 202 at a relatively fast rate. By employing the aforementioned inclination angle range for fermentation section 22, the tobacco material in fermentation chamber 202 can be moved downward along the floor of fermentation chamber 202 under the action of gravity, while ensuring a sufficient residence time within fermentation chamber 202, achieving a better fermentation effect.

[0038] like Figure 1 and Figure 2 As shown, an air cavity 25 for hot air to enter is provided in the wall of the drum 2, and the air cavity 25 is located on the periphery of the cavity 20. The heating assembly 3 includes a steam generator 31, a first air pipe 32, a second air pipe 33 for air to enter, and a heat exchanger 34 connected to the steam generator 31. The air inlet end of the heat exchanger 34 is connected to the air outlet of the second air pipe 33, and the air outlet end of the heat exchanger 34 is connected to the fermentation chamber 202 and the air cavity 25 respectively through the first air pipe 32.

[0039] In this manner, steam flowing out of steam generator 31 enters heat exchanger 34, while air flowing in through second air pipe 33 also enters heat exchanger 34. In heat exchanger 34, the hot air, after exchanging heat with the steam, enters air cavity 25 and fermentation cavity 202, thereby better controlling the temperatures of application cavity 201 and fermentation cavity 202. The hot air in air cavity 25 effectively blocks heat exchange between the external environment and cavity 20, reducing temperature fluctuations within cavity 20. Furthermore, air cavity 25 acts as a thermal resistance layer, slowing the rate at which heat enters and leaves cavity 20 through conduction or convection, thereby maintaining a more stable internal temperature.

[0040] like Figure 1 As shown, the first air pipe 32 includes a main pipe 321, a first branch pipe 322, and a second branch pipe 323. The main pipe 321 is connected to the heat exchanger 34. The first end of the first branch pipe 322 is connected to the main pipe 321, and the second end of the first branch pipe 322 is connected to the fermentation chamber 202. The first end of the second branch pipe 323 is connected to the first branch pipe 322, and the second end of the second branch pipe 323 is connected to the air chamber 25.

[0041] The hot air enters the cavity 20 to clean and sterilize the cavity 20 , so that the tobacco material can be fermented aseptically in the drum 2 .

[0042] Furthermore, the fermentation apparatus includes an air machine 5 for introducing compressed air into at least the nozzle 24. The air machine 5 is in communication with the nozzle 24. Thus, high-pressure compressed air flowing out of the air machine 5 enters the nozzle 24, forming a high-speed airflow inside the nozzle 24. The high-speed compressed airflow creates a negative pressure zone within the nozzle 24, causing the fermentation liquid to be drawn into the nozzle 24 at high speed. The fermentation liquid is then mixed with the compressed air, atomized, and ejected through the nozzle 24, thereby applying the fermentation liquid to the application chamber 201.

[0043] Specifically, the air machine 5 is connected to the nozzle 24 through a second pipe 51. The second pipe 51 is provided with a second flow meter 511 and a second solenoid valve 512 for opening and closing the second pipe 51. The second flow meter 511 cooperates with the second solenoid valve 512 to quantitatively deliver compressed air to the nozzle 24.

[0044] In this embodiment, the air generator 5 is connected to the inlet of the second air pipe 33. Thus, the compressed air flowing out of the air generator 5 enters the heat exchanger 34 through the second air pipe 33. The compressed air exchanges heat with the steam in the heat exchanger 34, thereby heating the compressed air. The temperature of the compressed air is generally set to 100-150°C. The heated compressed air then enters the air cavity 25 and the fermentation cavity 202.

[0045] In order to better control the compressed air entering the heat exchanger 34, the second air pipe 33 is provided with a third flow meter 331 and a third solenoid valve 332 for controlling the opening and closing of the second air pipe 33. Thus, the third flow meter 331 cooperates with the third solenoid valve 332 to quantitatively deliver compressed air to the heat exchanger 34.

[0046] like Figure 1 and Figure 2 As shown, the fermentation device further includes a drive mechanism 6 for rotating the drum 2. The drive mechanism 6 includes a transmission gear 61, a ring gear 62, and a motor 63 for rotating the transmission gear 61. The ring gear 62 has teeth distributed on its outer peripheral wall and is fixed to the outer periphery of the drum 2. The transmission gear 61 meshes with the teeth of the ring gear 62 and is in driving connection with the output shaft of the motor 63. Thus, when the motor 63 is in operation, the rotation of the drum 2 is achieved through the meshing transmission of the transmission gear 61 and the ring gear 62.

[0047] It should be noted that the above-mentioned roller 2 is rotatably connected to the bracket 1 via a connecting shaft 11. The connecting shaft 11 is fixedly connected to the bracket 1, and the roller 2 is rotatably set on the connecting shaft 11. The above-mentioned nozzle 24 is relatively fixed to the bracket 1, so the roller 2 rotates relative to the nozzle 24, and the nozzle 24 is located in the application chamber 201. The above-mentioned liquid storage tank 4 is connected to the nozzle 24 through a connecting pipe 241, and the connecting pipe 241 is passed through the side wall of the application chamber 201. In order to avoid the nozzle 24 interfering with the rotation of the roller 2, the connecting pipe 241 is coaxially arranged with the connecting shaft 11 of the roller 2, and the connecting pipe 241 can be passed through the connecting shaft 11. Furthermore, the above-mentioned transmission gear 61 and the motor 63 are both located below the roller 2, and the ring gear 62 is located on the periphery of the application section 21.

[0048] Furthermore, the fermentation device also includes a drying mechanism 7 for heating the tobacco material. The drying mechanism 7 includes a box body 71 connected to the fermentation chamber 202. Along the conveying direction of the tobacco material, the box body 71 is located downstream of the fermentation chamber 202. In this embodiment, in order to facilitate the transportation of the tobacco material in the fermentation chamber 202 to the box body 71, the fermentation chamber 202 is connected to the inner cavity of the box body 71 through the discharge vibration trough 8. The discharge vibration trough uses the vibration principle to realize the component of material conveying, which is the same as the vibration trough or vibration disk in the prior art and will not be repeated in this embodiment. In order to reduce the heat loss of the tobacco material in the discharge vibration trough 8, the top of the discharge vibration trough 8 is covered with a cover plate.

[0049] like Figure 2 and Figure 3As shown, the drying mechanism 7 includes a receiving plate 72 for receiving tobacco material. The receiving plate 72 is located within the housing 71 and is provided with through holes 721. The housing 71 is provided with a lower air nozzle 73 below the receiving plate 72 and an upper air nozzle 74 above the receiving plate 72. Both the lower air nozzle 73 and the upper air nozzle 74 have air outlets for spraying air toward the receiving plate 72. Both the upper air nozzle 74 and the lower air nozzle 73 are connected to the first air pipe 32. Specifically, both the upper air nozzle 74 and the lower air nozzle 73 are connected to the main pipe 321.

[0050] It is understood that the lower air nozzle 73 is used to eject hot air upward, heating the bottom of the tobacco material. The hot air then flows upward through the through-holes to further heat the tobacco. The upper air nozzle 74 is used to eject hot air downward, heating the top of the tobacco material. In this way, by heating both the top and bottom of the tobacco material with hot air, the drying degree of the tobacco material and the uniformity of inactivation can be improved.

[0051] Specifically, the receiving plate 72 gradually tilts downward along the conveying direction of the tobacco material, and the lower air nozzle 73 is located between the fermentation chamber 202 and the upper air nozzle 74 along the conveying direction of the tobacco material. In this way, after the tobacco material falls onto the receiving plate 72, because the receiving plate 72 tilts downward, the tobacco material on the receiving plate 72 can gradually slide downward along the board surface of the receiving plate 72 under the action of gravity, and the hot air ejected upward by the lower air nozzle 73 heats and dries the tobacco material. The gradually falling tobacco material is loosened, and the upper air nozzle 74 ejects hot air downward to heat and dry the loose tobacco material in one step. That is, through the convection of the upper and lower air flows, the upper and lower sides of the tobacco material can be fully heated, further improving the degree of dryness of the tobacco material and the uniformity of inactivation.

[0052] Furthermore, the lower air nozzles 73 are arranged in rows, with at least two rows, and are spaced apart along the width of the receiving plate 72. Each row contains at least two lower air nozzles 73 spaced apart along the direction in which the tobacco material is conveyed. The upper air nozzles 74 are arranged in rows, with at least two rows, and are spaced apart along the width of the receiving plate 72. Each row contains at least two upper air nozzles 74 spaced apart along the direction in which the tobacco material is conveyed.

[0053] In this way, the hot air ejected upward from the multiple lower air nozzles 73 forms a uniform air curtain, which more reliably and rapidly evaporates moisture from the surface of the tobacco material, achieving better drying and inactivation results. As the tobacco material descends, its thickness gradually decreases. The hot air ejected downward from the multiple upper air nozzles 74 at the top forms a uniform air curtain, heating the upper portion of the tobacco material. This convection ensures that both the upper and lower sides of the tobacco material are adequately heated, further improving the drying degree and uniformity of the tobacco material.

[0054] The box body 71 is provided with a discharge port, and a line moisture meter for detecting the moisture content of the tobacco stems is provided at the discharge port.

[0055] Tobacco stems are used as a test batch for the above fermentation device for illustration.

[0056] The drum 2 rotates under the drive of the driving mechanism 6. After a delay of t1 after the feed vibration groove shows that there is material, when the tobacco stem material enters the application chamber 201, the fermentation liquid is sprayed into the application chamber 201 through the nozzle 24. The tobacco stem material is evenly mixed with the fermentation liquid under the action of the lifting plate 26 and the rake nail 27. The temperature of the application chamber and the liquid storage tank 4 is consistent and both are T1. First, the drum 2 is rotated at V1 speed for a period of t2, and then the speed of the drum 2 is adjusted to V2. V2<V1. At this time, the drying mechanism 7 is not working, and the fermentation is continued for a period of time. After time t3, hot air is sprayed into the box 71 through the upper air nozzle 74 and the lower air nozzle 73 for preheating. After the tobacco stems continue to ferment for time t4, the tobacco stems enter the box 71. The temperature of the box 71 is maintained at T2. The hot air sprayed from the upper air nozzle 74 and the lower air nozzle 73 dries the tobacco stems. When the online moisture meter shows that the moisture content of the tobacco stem material at the discharge port is below 10%, the moisture content and fermentation time are both qualified. The sensory evaluation results show that the sweetness is significantly improved, the irritation and woodiness are significantly reduced, and the sensory quality score of the tobacco stems is improved.

[0057] Specifically, the batch size of the material added to the application chamber 201 in this application is 3000 kg, and the feed flow rate is set to 1500 kg / h. The above-mentioned time t1 is 30s, T1 is 50℃±3℃, V1=2.0rpm, t2=2h, V2=0.3rpm, t3=4h, t4=6h, T2=121℃±5℃. Under the above-mentioned experimental conditions, the online moisture meter shows that the moisture content of the tobacco stem is 8.9%, and the moisture content and fermentation time are both qualified. The sensory evaluation results show that the sweetness is significantly improved, the irritation and woodiness are significantly reduced, and the sensory quality score of the tobacco stem is improved by 5.8%. It should be noted that the fermentation principle in the fermentation chamber 202 of the above-mentioned fermentation device is the same as that in the prior art, and will not be repeated in this embodiment.

[0058] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. A fermentation device comprising: Bracket (1); A roller (2) is provided on the support (1) and is arranged to be rotatable around its own axis, and the interior of the roller (2) is hollow to form a cavity (20); a heating assembly (3) for heating the cavity (20); It is characterized in that the cavity (20) includes an application chamber (201) and a fermentation chamber (202) in sequence along the conveying direction of the tobacco material, the drum (2) is provided with a feed channel (23) for the tobacco material to enter the application chamber (201) and a nozzle (24) for spraying fermentation liquid into the application chamber (201), and the liquid spraying port of the nozzle (24) and the feed channel (23) are both connected to the application chamber (201).

2. The fermentation device according to claim 1, characterized in that The drum (2) includes an application section (21) and a fermentation section (22) in sequence along its length direction. Both the application section (21) and the fermentation section (22) are gradually inclined downward along the conveying direction of the tobacco material. The inner cavity of the application section (21) is the application chamber (201), and the inner cavity of the fermentation section (22) is the fermentation chamber (202).

3. The fermentation device according to claim 2, characterized in that The angle formed between the application section (21) and the horizontal plane is α, and the angle formed between the fermentation section (22) and the horizontal plane is β. The angles α and β satisfy: α>β.

4. The fermentation device according to claim 3, characterized in that The included angle α is 5°~20°, and the included angle β is 0°~5°.

5. The fermentation device according to any one of claims 1 to 4, characterized in that An air cavity (25) for hot air to enter is provided in the wall of the drum (2), and the air cavity (25) is located outside the cavity (20). The heating component (3) includes a steam generator (31), a first air pipe (32), a second air pipe (33) for air to enter, and a heat exchanger (34) connected to the steam generator (31). The air inlet end of the heat exchanger (34) is connected to the air outlet of the second air pipe (33), and the air outlet end of the heat exchanger (34) is connected to the fermentation chamber (202) and the air cavity (25) respectively through the first air pipe (32).

6. The fermentation device according to claim 5, characterized in that It also includes an air machine (5) for introducing compressed air into at least the nozzle (24), and the air machine (5) is connected to the nozzle (24).

7. The fermentation device according to claim 6, characterized in that The air machine (5) is connected to the inlet of the second air pipe (33).

8. The fermentation device according to claim 5, characterized in that The invention also includes a drying mechanism (7) for heating tobacco materials. The drying mechanism (7) includes a box (71) connected to the fermentation chamber (202). Along the conveying direction of the tobacco materials, the box (71) is located downstream of the fermentation chamber (202).

9. The fermentation device according to claim 8, characterized in that The drying mechanism (7) includes a receiving plate (72) for receiving tobacco materials, the receiving plate (72) is located in the box body (71), and through holes are distributed on the receiving plate (72), the box body (71) is provided with a lower air nozzle (73) at a position below the receiving plate (72), and an upper air nozzle (74) is provided at a position above the receiving plate (72), the lower air nozzle (73) and the upper air nozzle (74) are both provided with air jets for spraying toward the receiving plate (72), and the upper air nozzle (74) and the lower air nozzle (73) are both connected to the first air pipe (32).

10. The fermentation device according to claim 9, characterized in that The receiving plate (72) gradually tilts downward along the conveying direction of the tobacco material. Along the conveying direction of the tobacco material, the lower air nozzle (73) is located between the fermentation chamber (202) and the upper air nozzle (74).

Images