Tobacco stem fermentation device

Abstract

The tobacco stem fermentation device comprises a bearing mechanism and a heating mechanism, the bearing mechanism is provided with an airflow cavity and a bearing part, the bearing part is used for bearing tobacco stems, the bearing part is provided with a vent hole, and the vent hole communicates with the airflow cavity; the heating mechanism is provided with a first air conveying part and a second air conveying part, the first air conveying part is used for facing the bearing part, and the second air conveying part communicates with the airflow cavity. Compared with the prior art, the tobacco stem fermentation device has the advantages that the two sides of the tobacco stems can be effectively heated, so that the heating process of the tobacco stems is more uniform, and the situation that the fermentation process of the tobacco stems is affected due to non-uniform heating of the tobacco stems is prevented.

Description

Technical Field

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

[0002] Tobacco stems are an important component of tobacco leaves. Unfermented tobacco stems have a harsh and pungent flavor. Therefore, to ensure cigarette quality, tobacco stems must be fermented. Tobacco stem fermentation involves subjecting the stems to specific temperature and humidity conditions to induce changes in their physical and chemical properties, ultimately improving their flavor.

[0003] In traditional technology, tobacco stems are usually fermented using a tobacco stem fermentation device. The hot air blower of the tobacco stem fermentation device can heat the tobacco stems to ensure that the tobacco stems reach the temperature required for fermentation. However, the hot air blower has poor heating uniformity on the tobacco stems, which in turn affects the fermentation process of the tobacco stems. Summary of the Invention

[0004] Based on this, it is necessary to provide a tobacco stem fermentation device to address the problem that the hot air blower in traditional technology has poor heating uniformity on the tobacco stems, which in turn affects the fermentation process of the tobacco stems.

[0005] The technical solution is as follows:

[0006] One embodiment provides a tobacco stem fermentation device, comprising:

[0007] A carrying mechanism, wherein the carrying mechanism is provided with an airflow cavity and a carrying portion, the carrying portion is used to carry tobacco stems, the carrying portion is provided with a vent hole, and the vent hole is communicated with the airflow cavity;

[0008] The heating mechanism is provided with a first air delivery portion and a second air delivery portion, the first air delivery portion is used to be arranged toward the bearing portion, and the second air delivery portion is communicated with the air flow cavity.

[0009] In the above-mentioned tobacco stem fermentation device, the supporting part of the supporting mechanism is used to support the tobacco stems, and the first air supply part of the heating mechanism is arranged toward the supporting part to deliver hot air to the side of the tobacco stems away from the supporting part, and the second air supply part of the heating mechanism delivers hot air to the air flow cavity of the supporting mechanism, and the hot air in the air flow cavity then flows to the supporting part through the air vents to deliver hot air to the side of the tobacco stems toward the supporting part. In this way, both sides of the tobacco stems can be heated to improve the heating uniformity of the tobacco stems; compared with traditional technologies, the above-mentioned tobacco stem fermentation device can effectively heat both sides of the tobacco stems, making the heating process of the tobacco stems more uniform, and preventing the fermentation process of the tobacco stems from being affected by uneven heating of the tobacco stems.

[0010] In one embodiment, the tobacco stem fermentation device further includes a shell, the heating mechanism is disposed in the shell, the shell has an installation cavity, and the supporting mechanism is disposed in the installation cavity.

[0011] In one embodiment, the supporting mechanism includes a conveyor belt, a first rotating member and a second rotating member. The first rotating member and the second rotating member are arranged in the installation cavity at intervals along the first direction of the shell. The conveyor belt is sleeved on the first rotating member and the second rotating member so that the inner space of the conveyor belt forms the airflow cavity, and the vent is opened on the conveyor belt.

[0012] In one embodiment, the rotation axis of the first rotating member and the rotation axis of the second rotating member are both parallel to the second direction of the shell, the second direction is set at an angle to the first direction, the conveyor belt is formed with a first gap along one side parallel to the second direction, and the conveyor belt is formed with a second gap along the other side parallel to the second direction, the first gap and the second gap are both connected to the airflow cavity, and the first air delivery part is connected to at least one of the first gap and the second gap.

[0013] In one embodiment, the heating mechanism includes a hot air blower, the first air supply part includes a first air supply pipe, the second air supply part includes a second air supply pipe, one end of the first air supply pipe is connected to the hot air blower, and the other end of the first air supply pipe is connected to the first gap, one end of the second air supply pipe is connected to the hot air blower, and the other end of the second air supply pipe is connected to the second gap.

[0014] In one embodiment, the heating mechanism further includes an air return member, which is disposed on the housing and communicates with the installation cavity, and the air return member is communicated with an air inlet of the hot air blower.

[0015] In one embodiment, the tobacco stem fermentation device further comprises a windshield, which is disposed in the installation cavity, and at least a portion of the windshield is located in the airflow cavity and is disposed close to the first rotating member or the second rotating member.

[0016] In one embodiment, the wind shield is provided with a flexible portion, and the flexible portion abuts against the inner side of the conveyor belt.

[0017] In one embodiment, the tobacco stem fermentation device further includes a turning mechanism, which is movably disposed in the installation cavity and is used to turn the tobacco stems.

[0018] In one embodiment, the material turning mechanism includes a rotating rod and a material turning portion, the rotating rod is arranged in the installation cavity, and the material turning portion is arranged on the outer side wall of the rotating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. 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 any creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of a tobacco stem fermentation device in one embodiment of the present application.

[0021] Figure 2 This is a structural schematic diagram from another angle of the tobacco stem fermentation device in one embodiment of the present application.

[0022] Figure 3 This is a schematic diagram of the internal structure of a tobacco stem fermentation device in one embodiment of the present application.

[0023] Description of the accompanying drawings:

[0024] 100, bearing mechanism; 110, airflow chamber; 120, bearing portion; 121, vent; 130, conveyor belt; 131, first gap; 132, second gap; 140, first rotating member; 150, second rotating member; 200, heating mechanism; 210, first air delivery portion; 211, first air delivery pipe; 212, first air valve; 213, air inlet pipe section; 220, second air delivery portion; 221, second air delivery pipe Air pipe; 222, second air valve; 230, hot air blower; 240, return air component; 250, return air duct; 260, flow regulating mechanism; 300, shell; 310, installation cavity; 320, feed port; 330, discharge port; 400, wind shield; 410, flexible part; 500, feed end cover; 600, wind shield curtain; 700, turning mechanism; 710, rotating rod; 720, turning part; 10, tobacco stems. DETAILED DESCRIPTION

[0025] 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.

[0026] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0027] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0028] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0029] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0031] See also Figures 1 to 2 An embodiment of the present application provides a tobacco stem fermentation device, including a supporting mechanism 100 and a heating mechanism 200. The supporting mechanism 100 is provided with an air flow cavity 110 and a supporting portion 120. The supporting portion 120 is used to support the tobacco stems 10. The supporting portion 120 is provided with an air vent 121, and the air vent 121 is connected to the air flow cavity 110; the heating mechanism 200 is provided with a first air delivery portion 210 and a second air delivery portion 220. The first air delivery portion 210 is used to be set toward the supporting portion 120, and the second air delivery portion 220 is connected to the air flow cavity 110.

[0032] In the above-mentioned tobacco stem fermentation device, the supporting part 120 of the supporting mechanism 100 is used to support the tobacco stems 10, and the first air delivery part 210 of the heating mechanism 200 is arranged toward the supporting part 120 to deliver hot air to the side of the tobacco stems 10 away from the supporting part 120, and the second air delivery part 220 of the heating mechanism 200 delivers hot air to the air flow cavity 110 of the supporting mechanism 100, and the hot air in the air flow cavity 110 then flows to the supporting part 120 through the air vent 121 to deliver hot air to the side of the tobacco stems 10 toward the supporting part 120. In this way, both sides of the tobacco stems 10 can be heated to improve the heating uniformity of the tobacco stems 10; compared with traditional technology, the above-mentioned tobacco stem fermentation device can effectively heat both sides of the tobacco stems 10, so that the heating process of the tobacco stems 10 is more uniform, and prevent the fermentation process of the tobacco stems 10 from being affected by uneven heating of the tobacco stems 10.

[0033] Furthermore, the tobacco stems 10 enter the interior of the tobacco stem fermentation device through the feed port 320 of the tobacco stem fermentation device, and the supporting mechanism 100 carries and collects the tobacco stems 10 entering the interior of the tobacco stem fermentation device. During this process, the hot air blower 230 cannot heat the side of the tobacco stems 10 facing the supporting portion 120, resulting in a low temperature in the lower area of the tobacco stems 10 and poor heating uniformity; in this application, hot air is transported to the side of the tobacco stems 10 facing the supporting portion 120 through the air flow cavity 110 of the supporting mechanism 100 and the air vents 121 of the supporting portion 120, so as to achieve uniform heating of both sides of the tobacco stems 10, thereby improving the heating uniformity and improving the stability of the fermentation process of the tobacco stems 10.

[0034] In one embodiment, the carrying portion 120 is located on the upper portion of the carrying mechanism 100 , and a plurality of vent holes 121 are provided and spaced apart on the carrying portion 120 .

[0035] Furthermore, the diameter of the ventilation holes 121 is smaller than the diameter of the tobacco stems 10 to prevent the tobacco stems 10 from falling into the airflow cavity 110 through the ventilation holes 121 .

[0036] In one embodiment, the heating mechanism 200 includes a hot air blower 230 .

[0037] See also Figures 1 to 2 In one embodiment, the tobacco stem fermentation device further includes a shell 300 , the heating mechanism 200 is disposed in the shell 300 , the shell 300 has an installation cavity 310 , and the supporting mechanism 100 is disposed in the installation cavity 310 .

[0038] The housing 300 can provide a certain degree of protection for the supporting mechanism 100 in the mounting cavity 310 , and can also prevent external debris from contaminating the tobacco stems 10 on the supporting mechanism 100 .

[0039] In some embodiments, the carrying mechanism 100 is not only used to carry the tobacco stems 10 , but can also be used to transport the tobacco stems 10 .

[0040] Optionally, the carrying mechanism 100 may be a transmission belt structure or a transmission roller structure, which is not specifically limited here.

[0041] Furthermore, the shell 300 is provided with a feed port 320 and a discharge port 330 , and the feed port 320 and the discharge port 330 are respectively located on opposite sides of the supporting mechanism 100 parallel to the conveying direction to achieve fermentation and conveyance of the tobacco stems 10 .

[0042] Optionally, the heating mechanism 200 can be arranged inside the installation cavity 310 or outside the installation cavity 310, as long as it can be connected to the installation cavity 310 and transport hot air to the installation cavity 310 and the airflow cavity 110 respectively. No specific limitation is made here.

[0043] exist Figures 1 to 2 In the illustrated embodiment, the heating mechanism 200 is located outside the mounting cavity 310 and disposed on an upper portion of the housing 300 .

[0044] See also Figures 1 to 3 In one embodiment, the carrying mechanism 100 includes a conveyor belt 130, a first rotating member 140 and a second rotating member 150. The first rotating member 140 and the second rotating member 150 are spaced apart in the installation cavity 310 along the first direction of the shell 300. The conveyor belt 130 is sleeved on the first rotating member 140 and the second rotating member 150. The conveyor belt 130 has an air flow cavity 110 so that the inner space of the conveyor belt 130 forms an air flow cavity 110, and the vent 121 is opened on the conveyor belt 130.

[0045] The conveyor belt 130 is sleeved on the first rotating member 140 and the second rotating member 150, so that the inner space of the conveyor belt 130 forms an air flow chamber 110, and the vent 121 is opened on the conveyor belt 130. In this way, when the heating mechanism 200 transports hot air to the air flow chamber 110, it flows to the tobacco stems 10 on the conveyor belt 130 through the vent 121 of the conveyor belt 130, so as to heat the side of the tobacco stems 10 facing the conveyor belt 130; the first rotating member 140 and the second rotating member 150 can rotate in the installation cavity 310 to drive the conveyor belt 130 sleeved on the first rotating member 140 and the second rotating member 150 to move, thereby transporting the tobacco stems 10 on the conveyor belt 130.

[0046] Further, see Figures 1 to 3 The inner sleeve of the conveyor belt 130 is respectively sleeved on the first rotating member 140 and the second rotating member 150, so that the inner space of the conveyor belt 130 can be enclosed to form an air flow cavity 110, and the tobacco stems 10 are located on the outside of the conveyor belt 130. A plurality of ventilation holes 121 are opened on the conveyor belt 130. When the second air supply part 220 transports hot air to the air flow cavity 110 inside the conveyor belt 130, the hot air can flow to the outside of the conveyor belt 130 through the ventilation holes 121 on the conveyor belt 130 to heat the side of the tobacco stems 10 facing the conveyor belt 130.

[0047] Furthermore, the upper portion of the outer side of the conveyor belt 130 is the bearing portion 120 , and the conveyor belt 130 is provided with a plurality of ventilation holes 121 to convey hot air to the tobacco stems 10 on the conveyor belt 130 .

[0048] For explanation, the first direction in the above embodiment is the length direction of the housing 300, that is, Figure 2 A direction in .

[0049] In one embodiment, the conveyor belt 130 uses stainless steel mesh track shoes.

[0050] Furthermore, the stainless steel mesh belt crawler plate includes a conveyor chain, a driving member and a stainless steel perforated plate. The driving member drives the conveyor chain and the stainless steel perforated plate to move through the chain, so as to drive the tobacco stems 10 to move, which will not be repeated here.

[0051] See also Figures 1 to 2In one embodiment, the rotation axis of the first rotating member 140 and the rotation axis of the second rotating member 150 are both parallel to the second direction of the shell 300, the second direction is set at an angle to the first direction, the conveyor belt 130 is formed with a first gap 131 along one side parallel to the second direction, and the conveyor belt 130 is formed with a second gap 132 along the other side parallel to the second direction. The first gap 131 and the second gap 132 are both connected to the airflow cavity 110, and the first air delivery portion 210 is connected to at least one of the first gap 131 and the second gap 132.

[0052] The rotation axis of the first rotating member 140 and the rotation axis of the second rotating member 150 are both parallel to the second direction of the shell 300. In this way, when the conveyor belt 130 is mounted on the first rotating member 140 and the second rotating member 150, the conveyor belt 130 is provided with a first gap 131 and a second gap 132 on opposite sides along the second direction, respectively. The first air delivery part 210 can deliver hot air to at least one of the first gap 131 and the second gap 132 to deliver the hot air into the air flow chamber 110, thereby achieving heating of the tobacco stems 10 on the conveyor belt 130; with such a setting, the tobacco stems 10 can be heated without affecting the conveyor belt 130 in conveying the tobacco stems 10, and the implementation cost is low.

[0053] For explanation, the second direction is the width direction of the housing 300 (ie Figure 2 B direction in the figure).

[0054] Furthermore, the second direction is perpendicular to the first direction.

[0055] See also Figures 1 to 3 In one embodiment, the first rotating member 140 includes a first roller, and the second rotating member 150 includes a second roller. Both the first roller and the second roller can rotate along their own axis directions. The transmission belt is mounted on the outer wall of the first roller and the outer wall of the second roller. In this way, when at least one of the first roller and the second roller rotates, it can drive the transmission belt to move.

[0056] See also Figures 1 to 2 In one embodiment, the heating mechanism 200 includes a hot air blower 230, the first air delivery part 210 includes a first air delivery pipe 211, the second air delivery part 220 includes a second air delivery pipe 221, one end of the first air delivery pipe 211 is connected to the hot air blower 230, and the other end of the first air delivery pipe 211 is connected to the first gap 131, one end of the second air delivery pipe 221 is connected to the hot air blower 230, and the other end of the second air delivery pipe 221 is connected to the second gap 132.

[0057] The hot air blower 230 can deliver hot air to the first gap 131 through the first air pipe 211, and deliver hot air to the second gap 132 through the second air pipe 221, and then deliver the hot air to the air flow cavity 110. By delivering hot air to both sides of the air flow cavity 110 through the first air pipe 211 and the second air pipe 221 respectively, the flow uniformity of the hot air in the air flow cavity 110 can be improved, and the temperature of the hot air flowing out of the vent 121 can be made more uniform, thereby improving the heating uniformity of the tobacco stems 10.

[0058] Further, see Figures 1 to 3 The hot air blower 230 is arranged on the upper part of the shell 300, one end of the first air pipe 211 and one end of the second air pipe 221 are respectively arranged on opposite sides of the hot air blower 230 along the second direction, and the other end of the first air pipe 211 and the other end of the second air pipe 221 extend to opposite sides of the shell 300 along the second direction, so that the other end of the first air pipe 211 and the other end of the second air pipe 221 are respectively connected to the first gap 131 and the second gap 132.

[0059] See also Figures 1 to 2 In one embodiment, the heating mechanism 200 also includes a flow regulating mechanism 260, which is provided with a first air delivery portion 210 and a second air delivery portion 220. The hot air generated by the hot air blower 230 is first delivered to the flow regulating mechanism 260. The flow regulating mechanism 260 can control the flow rate of the hot air delivered from the first air delivery portion 210 and the second air delivery portion 220 to control the heating temperature of different parts of the tobacco stem 10.

[0060] Furthermore, the first air delivery part 210 is provided at the lower part of the flow regulating mechanism 260 , and two second air delivery parts 220 are provided and are respectively provided on opposite sides of the flow regulating mechanism 260 along the second direction to respectively deliver hot air to the first gap 131 and the second gap 132 .

[0061] Furthermore, the flow regulating mechanism 260 is provided with an air duct, which can adjust the flow of hot air delivered from the first air delivery part 210 and the second air delivery part 220 by changing the width of the air duct to control the heating temperature of different parts of the tobacco stem 10.

[0062] In one embodiment, the tobacco stem fermentation device has a preheating stage, a feeding stage and a fermentation stage. In the preheating stage, the tobacco stems 10 do not enter the shell 300. Since the conveyor belt 130 is not covered by the tobacco stems 10, the air vents 121 are highly permeable. Therefore, the flow regulating mechanism 260 is adjusted so that the hot air is only delivered to the air flow chamber 110 through the second air delivery part 220 to achieve effective preheating of the conveyor belt 130; in the feeding stage, the flow regulating mechanism 260 is adjusted to control the first air delivery part 210 and the second air delivery part 220 to deliver a preset flow of hot air; in the fermentation stage after the feeding is completed, since the thermal conductivity of the tobacco stems 10 is low, its temperature is not easily dissipated. The temperature surface monitoring system in the shell 300 can monitor the temperature difference between the upper and lower layers of the tobacco stems 10. If the temperature difference is less than the preset value, the flow regulating mechanism 260 is adjusted to deliver hot air only through the first air delivery part 210, and the power of the fan is reduced to maintain the temperature.

[0063] See also Figure 2 In one embodiment, the first air pipe 211 is provided with a first air valve 212, and the second air pipe 221 is provided with a second air valve 222. The first air valve 212 and the second air valve 222 are respectively used to adjust the flow of the first air pipe 211 and the second air pipe 221 to control the heating temperature of different parts of the tobacco stem 10.

[0064] See also Figure 2 In one embodiment, an air inlet pipe section 213 is provided at one end of the first air supply pipe 211 away from the hot air blower 230. The air inlet pipe section 213 is arranged close to the feed end of the conveyor belt 130 and the inner diameter is gradually increased. The inner diameter of the air inlet pipe section 213 gradually increases, so that the speed of the hot air is reduced, so that the hot air is retained and uniform when entering the air flow chamber 110, which is beneficial to effectively heating the tobacco stems 10 at the feed end. The second air supply pipe 221 is similar and will not be repeated here.

[0065] See also Figures 1 to 2 In one embodiment, the heating mechanism 200 further includes an air return member 240 . The air return member 240 is disposed in the housing 300 and communicates with the installation cavity 310 . The air return member 240 is communicated with an air inlet of the hot air blower 230 .

[0066] The return air component 240 connected to the installation cavity 310 can transport the hot air in the installation cavity 310 back to the hot air blower 230. The hot air blower 230 reheats this part of the hot air and transports it to the installation cavity 310 to form a hot air circulation, thereby improving the heating effect on the tobacco stems 10.

[0067] Furthermore, the housing 300 is provided with an air return port, which is arranged near the discharge end of the conveyor belt 130 and is connected to the air return member 240 .

[0068] Furthermore, as the airflow from the first air pipe 211 and the second air pipe 221 continuously enters the airflow chamber 110, the negative pressure of the return air port reduces the air pressure near the discharge end of the conveyor belt 130, causing the hot air in the airflow chamber 110 to flow toward the discharge end, thereby heating the conveyor belt 130 and the tobacco stems 10 by conduction and convection, thereby achieving heating of the tobacco stems 10.

[0069] In one embodiment, the air return member 240 is connected to the air inlet of the hot air blower 230 through the air return duct 250 .

[0070] See also Figures 1 to 2 In one embodiment, the tobacco stem fermentation device further includes a windshield 400 , which is disposed in the mounting cavity 310 , and at least a portion of the windshield 400 is located in the airflow cavity 110 and is disposed close to the first rotating member 140 or the second rotating member 150 .

[0071] The part of the windshield 400 located in the airflow cavity 110 can block the hot air in the airflow cavity 110, preventing the hot air in the airflow cavity 110 from flowing toward the first rotating part 140 or the second rotating part 150, so that the hot air in the airflow cavity 110 can flow toward the tobacco stem 10 through the vent 121 as much as possible.

[0072] For explanation, the windshield 400 extends in the height direction and is at least partially located in the airflow cavity 110 to serve as a barrier to the hot air in the airflow cavity 110. When the windshield 400 is arranged close to the first rotating member 140, it can block the hot air flowing toward the first rotating member 140. Similarly, when the windshield 400 is arranged close to the second rotating member 150, it can block the hot air flowing toward the second rotating member 150, so that the hot air can fully flow into the vent 121 and flow toward the tobacco stem 10.

[0073] In one embodiment, two wind shields 400 are provided, wherein one wind shield 400 is disposed close to the first rotating member 140 , and the other wind shield 400 is disposed close to the second rotating member 150 .

[0074] See also Figure 1 In one embodiment, the windshield 400 is provided with a flexible portion 410 , and the flexible portion 410 abuts against the inner side of the conveyor belt 130 .

[0075] The flexible portion 410 of the windshield 400 abuts against the inner side of the conveyor belt 130 , which not only improves the effect of blocking hot air, but also prevents the windshield 400 from wearing the inner side of the conveyor belt 130 .

[0076] Furthermore, the flexible portion 410 extends along the second direction to match the shape of the windshield 400 .

[0077] Optionally, the flexible portion 410 may be made of rubber, or PVC (polyvinyl chloride), etc., which is not specifically limited here.

[0078] See also Figure 1 In one embodiment, the tobacco stem fermentation device further includes a feed end cover 500 , which is disposed at the feed end of the conveyor belt 130 to prevent the hot air in the airflow chamber 110 from leaking out.

[0079] Furthermore, the shape of the feed end cover 500 matches the shape of the outer wall of the first rotating member 140 to ensure a wind shielding effect.

[0080] See also Figure 1 In one embodiment, the tobacco stem fermentation device further includes a windshield 600 , which is disposed in the mounting cavity 310 and abuts against the supporting portion 120 .

[0081] See also Figures 1 to 2 In one embodiment, the tobacco stem fermentation device further includes a turning mechanism 700 , which is movably disposed in the mounting cavity 310 and is used to turn the tobacco stems 10 .

[0082] The turning mechanism 700 can turn over the tobacco stems 10 on the supporting portion 120 to increase the contact area between the tobacco stems 10 and the air, and at the same time improve the temperature uniformity of the tobacco stems 10, thereby maintaining suitable fermentation conditions.

[0083] See also Figures 1 to 2 In one embodiment, the turning mechanism 700 includes a rotating rod 710 and a turning portion 720 . The rotating rod 710 is disposed in the mounting cavity 310 , and the turning portion 720 is disposed on an outer side wall of the rotating rod 710 .

[0084] The rotating rod 710 drives the turning part 720 to move by rotating, so as to turn the tobacco stems 10, increase the contact area between the tobacco stems 10 and the air, and maintain suitable fermentation conditions.

[0085] Further, see Figures 1 to 2 At least two turning mechanisms 700 are provided and are spaced apart in the installation cavity 310 along the conveying direction of the conveyor belt 130 to improve the turning uniformity.

[0086] See also Figures 1 to 2 In one embodiment, the turning portion 720 includes a turning rod, and at least two turning rods are provided and spaced apart along the circumference of the rotating rod 710 .

[0087] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above 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.

[0088] The above embodiments merely illustrate 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 protection of the present patent application shall be determined by the appended claims.

Claims

1. A tobacco stem fermentation device, characterized in that: include: A carrying mechanism, wherein the carrying mechanism is provided with an airflow cavity and a carrying portion, the carrying portion is used to carry tobacco stems, the carrying portion is provided with a vent hole, and the vent hole is communicated with the airflow cavity; The heating mechanism is provided with a first air delivery portion and a second air delivery portion, the first air delivery portion is used to be arranged toward the bearing portion, and the second air delivery portion is communicated with the air flow cavity.

2. The tobacco stem fermentation device according to claim 1, characterized in that The tobacco stem fermentation device further includes a shell, the heating mechanism is arranged in the shell, the shell has an installation cavity, and the supporting mechanism is arranged in the installation cavity.

3. The tobacco stem fermentation device according to claim 2, characterized in that The carrying mechanism includes a conveyor belt, a first rotating member and a second rotating member. The first rotating member and the second rotating member are arranged in the installation cavity at intervals along the first direction of the shell. The conveyor belt is sleeved on the first rotating member and the second rotating member so that the inner space of the conveyor belt forms the airflow cavity, and the vent is opened on the conveyor belt.

4. The tobacco stem fermentation device according to claim 3, characterized in that The rotation axis of the first rotating member and the rotation axis of the second rotating member are both parallel to the second direction of the shell, the second direction is set at an angle to the first direction, the conveyor belt forms a first gap on one side along the second direction, the conveyor belt forms a first gap on one side parallel to the second direction, and the conveyor belt forms a second gap on the other side parallel to the second direction, the first gap and the second gap are both communicated with the airflow cavity, and the first air delivery portion is communicated with at least one of the first gap and the second gap.

5. The tobacco stem fermentation device according to claim 4, characterized in that The heating mechanism includes a hot air blower, the first air delivery part includes a first air delivery pipe, the second air delivery part includes a second air delivery pipe, one end of the first air delivery pipe is connected to the hot air blower, and the other end of the first air delivery pipe is connected to the first gap, one end of the second air delivery pipe is connected to the hot air blower, and the other end of the second air delivery pipe is connected to the second gap.

6. The tobacco stem fermentation device according to claim 5, characterized in that: The heating mechanism further includes an air return member, which is disposed on the housing and communicates with the installation cavity, and the air return member is communicated with an air inlet of the hot air blower.

7. The tobacco stem fermentation device according to claim 3, characterized in that The tobacco stem fermentation device further includes a windshield, which is disposed in the installation cavity. At least a portion of the windshield is located in the airflow cavity and is disposed close to the first rotating member or the second rotating member.

8. The tobacco stem fermentation device according to claim 7, characterized in that: The windshield is provided with a flexible portion, and the flexible portion abuts against the inner side of the conveyor belt.

9. The tobacco stem fermentation device according to claim 2, characterized in that: The tobacco stem fermentation device further comprises a turning mechanism, which is movably disposed in the installation cavity and is used for turning the tobacco stems.

10. The tobacco stem fermentation device according to claim 9, characterized in that: The material turning mechanism includes a rotating rod and a material turning portion, the rotating rod is arranged in the installation cavity, and the material turning portion is arranged on the outer side wall of the rotating rod.

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