Anaerobic or anaerobic tobacco fermentation equipment

Abstract

The present invention discloses a constant temperature anaerobic tobacco fermentation device, comprising a frame for carrying a fermentation tank and a driving device, a transparent cylindrical fermentation tank for containing tobacco leaves, and a detachable circular bottom plate at the bottom of the fermentation tube. The bottom plate is sealed to the fermentation tank by an O-ring, and a silicone heating plate is installed on the bottom plate. The upper part of the cylindrical fermentation tank is a circular pressing plate that cooperates with the inner wall of the fermentation tank. The outer periphery of the pressing plate is provided with a circular sealing groove, and the sealing groove is installed with an O-ring to cooperate with the inner wall of the fermentation tank for sealing. The pressing plate is installed on the lifting screw of the spiral turbine worm press, and the spiral turbine worm press is installed on the top of the frame. The present invention can automatically control the pressure in the sealed tank and maintain it in a relatively stable range, which is suitable for some constant temperature anaerobic or low oxygen tobacco fermentation processes.

Description

Technical Field

[0001] The present invention relates to cigarette production equipment, and more particularly to an oxygen-free or anaerobic tobacco leaf fermentation equipment. Background Art

[0002] Tobacco leaves that have not been fermented have various quality defects to varying degrees, such as green odor and irritation, monotonous aroma, and insufficient aroma, and cannot be used directly to produce cigarettes.

[0003] Prior art utilizes the principle of high-temperature oxidation to remove impurities, processing flue-cured tobacco to produce tobacco leaves with varying flavors. The fermentation process typically involves placing processed tobacco leaves or shredded tobacco in a sealed container for a period of time. Microorganisms may or may not be added, and the temperature is adjusted to induce a series of chemical or biochemical changes within the tobacco leaves. This reduces certain quality defects in the original tobacco, enhances the tobacco aroma, and significantly improves smoking quality. This is a crucial step in cigarette processing, improving the quality of the tobacco leaves and, consequently, the quality of the cigarettes.

[0004] Temperature and pressure during the fermentation of pipe tobacco raw materials are key factors affecting the quality of the final product. However, current equipment cannot effectively manage the pressure of fermentation equipment, or the control methods are too complex, which is not conducive to application. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides an anaerobic tobacco fermentation device, which is simple, can effectively adjust the pressure in the fermentation tank, and is safe to use.

[0006] The technical solutions provided by the present invention are as follows:

[0007] An oxygen-free or anaerobic tobacco fermentation equipment,

[0008] Including a support for the fermentation tank and the drive unit,

[0009] Cylindrical fermentation tank for tobacco leaves,

[0010] The pressure plate matches the inner wall of the cylindrical fermentation tank.

[0011] A driving device used to drive the pressing plate to move up and down in the fermentation tank.

[0012] A sensor assembly is provided in the fermentation tank,

[0013] a controller electrically connected to the drive device and the sensor assembly,

[0014] Wherein, an O-ring is provided at the contact point between the outer periphery of the pressing plate and the fermentation tank;

[0015] An air inlet and an air outlet are provided on the pressure plate, and an air inlet check valve assembly and an air outlet check valve assembly are provided on the air inlet and the air outlet respectively.

[0016] In which, the air intake one-way valve assembly includes a first sealing ball, a first spring and a first adjusting screw. The upper end of the air inlet cooperates with the first sealing ball. The opening diameter of the upper end of the air inlet is smaller than the diameter of the first sealing ball. The top end of the first spring contacts the first sealing ball. The bottom end of the first spring contacts the first adjusting screw. The first adjusting screw is threadedly connected to the bottom of the air inlet.

[0017] In which, the air outlet one-way valve assembly includes a second sealing ball, a second spring and a second adjusting screw. The lower end of the air outlet cooperates with the second sealing ball, the opening diameter of the lower end of the air inlet is smaller than the diameter of the second sealing ball, the bottom end of the second spring contacts the second sealing ball, the top end of the second spring contacts the second adjusting screw, and the second adjusting screw is threadedly connected to the top of the air outlet.

[0018] The bracket includes a bottom plate, a connecting rod and a top plate, and the upper and lower ends of the connecting rod are connected to the bottom plate and the top plate respectively.

[0019] The fermentation tank is installed on the bottom plate, and the driving device is installed on the top plate.

[0020] A weighing plate is provided between the bottom plate and the bottom of the fermentation tank, a weight sensor is provided at the lower part of the weighing plate, and the weight sensor is electrically connected to the controller.

[0021] The driving device includes a spiral worm gear press, a lifting screw, a gear assembly, an input shaft and a hand wheel.

[0022] The spiral worm gear press includes a lifting screw, the bottom of which is vertically connected to the surface of the pressing plate;

[0023] The gear assembly includes a driving gear set and a driven gear set, the driving gear set is mounted on the input shaft, the gears of the driving gear set and the driven gear set are meshed, and the gears of the driven gear set are meshed with the lifting screw;

[0024] The top plate is provided with a mounting piece, and one end of the input shaft is rotatably mounted on the mounting piece;

[0025] The hand wheel is installed at the other end of the input shaft.

[0026] The driving gear set includes a first driving gear and a second driving gear of different diameters, and the driven gear set includes a first driven gear and a second driven gear of different diameters. By meshing the first driving gear and the second driving gear of different diameters with the first driven gear and the second driven gear of different diameters, the transmission ratio of the pressure plate can be adjusted.

[0027] The middle driving device of the shaft also includes a gear lever gear adjustment device, the gear adjustment device includes a shift rod and a shift fork, the gear adjustment device is mounted on the top plate, the shift fork is clamped with the support shaft of the drive gear set, and the shift rod is movably mounted on the top plate

[0028] Among them, the sensor assembly includes a pressure sensor installed on the upper part of the pressure plate for detecting the gas or liquid pressure in the fermentation tank, a weight sensor installed on the bottom plate for detecting the pressure applied downward by the driving device to the tobacco leaves through the pressure plate, a temperature sensor installed in the fermentation tank, and a humidity sensor.

[0029] Among them, a lower heating plate is provided at the bottom of the fermentation tank, an upper heating plate is provided on the lower surface of the pressing plate, the upper heating plate is provided with through holes facing the air inlet and the air outlet, and the upper heating plate and the lower heating plate are electrically connected to the controller.

[0030] Wherein, a display device is also included, and the display device is electrically connected to the controller.

[0031] Compared to the existing technology, the anaerobic tobacco fermentation equipment provided by the present invention includes a bracket for supporting a fermentation tank and a drive device, a cylindrical fermentation tank for mounting tobacco leaves, a pressure plate that cooperates with the inner wall of the cylindrical fermentation tank, a drive device for driving the pressure plate to move up and down within the fermentation tank, a sensor assembly disposed within the fermentation tank, and a controller electrically connected to the drive device and the sensor assembly. The pressure plate is provided with an O-ring at the contact point between the outer periphery and the fermentation tank; the pressure plate is provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively provided with an air inlet and an air outlet check valve assembly. The present invention can automatically control the pressure within the sealed tank and maintain it in a relatively stable range, making it suitable for some anaerobic or low-oxygen tobacco fermentation processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1Schematic diagram of the external structure of the present invention;

[0034] Figure 2 Schematic diagram of the internal structure of the present invention;

[0035] Figure 3 for Figure 2 I enlarged view;

[0036] Figure 4 is an enlarged structural diagram of the pressing plate 300;

[0037] Figure 5 This is an exploded view of the drive assembly;

[0038] Figure 6 This is the assembly drawing of the drive component;

[0039] In the figure, the bracket 100, the fermentation tank 200, the pressure plate 300, the driving device 400, the sensor assembly 500, the O-ring 600, the controller 700, the air inlet 310, the air outlet 320, the air inlet check valve assembly 330, the air outlet check valve assembly 340, the first sealing ball 331, the first spring 332, the first adjusting screw 333, the second sealing ball 341, the second spring 342, the second adjusting screw 343, the weighing plate 800, the lifting screw 410, the gear assembly 420, the input shaft 430, the handwheel 440, the driving gear set 421, the driven gear set 422, the gear adjustment device 470, the shift lever 471, the shift fork 472, the mounting part 450, and the flange 460. DETAILED DESCRIPTION

[0040] To help those skilled in the art better understand the technical solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0042] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 should not be understood as limiting the present invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0044] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0045] The embodiments of the present invention are written in a progressive manner.

[0046] As shown in the figure, an anaerobic tobacco fermentation equipment,

[0047] The device comprises a support 100 for supporting a fermentation tank 200 and a driving device 400.

[0048] Cylindrical fermentation tank 200 for installing tobacco leaves,

[0049] The pressing plate 300 cooperates with the inner wall of the cylindrical fermentation tank 200.

[0050] A driving device 400 for driving the pressing plate 300 to move up and down in the fermentation tank 200,

[0051] The sensor assembly 500 is provided in the fermentation tank 200.

[0052] A controller 700 electrically connected to the driving device 400 and the sensor assembly 500,

[0053] Wherein, an O-ring 600 is provided at the contact point between the outer periphery of the pressing plate 300 and the fermentation tank 200;

[0054] The pressure plate 300 is provided with an air inlet 310 and an air outlet 320 , and the air inlet 310 and the air outlet 320 are respectively provided with an air inlet check valve assembly 330 and an air outlet check valve assembly 340 .

[0055] When the anaerobic tobacco fermentation equipment of the present invention is used for tobacco fermentation, the pressing plate 300 is first opened, and the tobacco leaves immersed in the fermentation liquid are poured into the bottom of the fermentation tank 200. The driving device 400 drives the pressing plate 300 to move up and down in the fermentation tank 200 to compact the tobacco leaves. At the same time, the O-ring 600 between the pressing plate 300 and the side wall of the fermentation tank 200 can create a closed space for the tobacco leaves to ferment. When the temperature in the fermentation tank 200 rises, the gas or liquid is discharged from the gas outlet 320, and the fermentation tank 200 is heated. The oxygen content inside is low. When the tobacco leaves are further fermented, the oxygen in the fermentation tank 200 is consumed. The fermentation tank 200 is an anaerobic or low-oxygen environment, which can be suitable for some anaerobic or low-oxygen fermentation processes. However, as the fermentation continues, when the air pressure in the fermentation tank 200 decreases, the outside air or the previously discharged liquid can flow back into the fermentation tank 200 through the air inlet 310, so that the pressure in the fermentation tank 200 can reach self-balance. The air inlet check valve assembly 330 and the air outlet check valve assembly 340 can be pressure control valves.

[0056] The air intake one-way valve assembly of the present invention includes a first sealing ball 331, a first spring 332 and a first adjusting screw 333. The upper end of the air inlet 310 cooperates with the first sealing ball 331. The opening diameter of the upper end of the air inlet 310 is smaller than the diameter of the first sealing ball 331. The top end of the first spring 332 contacts the first sealing ball 331, and the bottom end of the first spring 332 contacts the first adjusting screw 333. The first adjusting screw 333 is threadedly connected to the bottom of the air inlet 310.

[0057] When the pressure outside the fermentation tank 200 is greater than the pressure inside the fermentation tank 200, the first sealing ball 331 is subjected to downward pressure, and the first spring 332 is subjected to downward pressure. When the pressure outside the fermentation tank 200 is greater than the sum of the pressure inside the fermentation tank 200 and the initial pressure of the first spring 332, the first spring 332 is deformed and compressed. At this time, the first sealing ball 331 moves downward, and the first sealing ball 331 is separated from the opening at the top of the air inlet 310, and gas or liquid can flow into the fermentation tank 200 from the air inlet 310. When the pressure outside the fermentation tank 200 is equal to or less than the pressure inside the fermentation tank 200, the first sealing ball 331 is in sealing contact with the top of the air inlet 310 under the elastic support of the first spring 332. At this time, neither gas nor liquid can flow into or out of the air inlet 310. The initial compression of the first spring 332 can be adjusted by adjusting the position of the first adjusting screw 333, so that the preset pressure value of the fermentation tank 200 can be adjusted.

[0058] Based on the same principle, the air outlet one-way valve assembly of the present invention includes a second sealing ball 341, a second spring 342 and a second adjusting screw 343. The lower end of the air outlet 320 cooperates with the second sealing ball 341, and the opening diameter of the lower end of the air inlet 310 is smaller than the diameter of the second sealing ball 341. The bottom end of the second spring 342 contacts the second sealing ball 341, and the top end of the second spring 342 contacts the second adjusting screw 343. The second adjusting screw 343 is threadedly connected to the top of the air outlet 320.

[0059] When the pressure inside the fermentation tank 200 is greater than the pressure outside the fermentation tank 200, the second sealing ball 341 is subjected to upward pressure, and the second spring 342 is subjected to upward pressure. When the pressure inside the fermentation tank 200 is greater than the sum of the pressure outside the fermentation tank 200 and the initial pressure of the second spring 342, the second spring 342 is deformed and compressed, and the second sealing ball 341 moves upward, separating from the opening at the bottom of the gas outlet 320, allowing gas or liquid to flow out of the fermentation tank 200 from the gas outlet 320. When the pressure inside the fermentation tank 200 is equal to or less than the pressure outside the fermentation tank 200, the second sealing ball 341 is in sealing contact with the bottom of the gas outlet 320 under the elastic support of the second spring 342. At this time, neither gas nor liquid outside the fermentation tank 200 can flow into or out of the gas outlet 320. Similarly, the initial compression of the second spring 342 can be adjusted by adjusting the position of the second adjusting screw 343, thereby adjusting the preset pressure value of the fermentation tank 200.

[0060] The bracket 100 of the present invention includes a bottom plate, a connecting rod and a top plate. The upper and lower ends of the connecting rod are respectively connected to the bottom plate and the top plate. The fermentation tank 200 is installed on the bottom plate, and the driving device 400 is installed on the top plate.

[0061] The fermentation tank 200 is mounted on the bottom plate, and the driving device 400 is mounted on the top plate. A through hole is provided on the top plate, which allows the driving device 400 to be connected to the pressing plate 300 , thereby driving the pressing plate 300 to move in the fermentation tank 200 .

[0062] A weighing plate 800 is provided between the bottom plate of the present invention and the bottom of the fermentation tank 200. A weight sensor is provided below the weighing plate 800. The weight sensor is electrically connected to the controller 700. The weight sensor is used to detect the pressure applied downward by the driving device to the tobacco leaves through the pressing plate.

[0063] The driving device 400 of the present invention includes a spiral worm gear press, a lifting screw 410, a gear assembly 420, an input shaft 430 and a hand wheel 440.

[0064] The spiral worm gear press includes a lifting screw 410, the bottom of which is vertically connected to the surface of the pressing plate 300, and the lifting screw 410 and the pressing plate 300 can be connected via a flange 460;

[0065] The gear assembly 420 includes a driving gear set 421 and a driven gear set 422. The driving gear set 421 is mounted on the input shaft 430. The gears of the driving gear set 421 and the driven gear set 422 are meshed. The gears of the driven gear set 422 are meshed with the lifting screw 410.

[0066] The top plate is provided with a mounting member 450, and one end of the input shaft 430 is rotatably mounted on the mounting member 450;

[0067] The hand wheel 440 is installed at the other end of the input shaft 430 .

[0068] The rotation of the hand wheel 440 can drive the rotation of the input shaft 430, thereby driving the driving gear set (421) to rotate, and the gears of the driving gear set 421 drive the driven gear set 422 to rotate. The rotation of the driven gear set 422 can be converted into the up and down movement of the lifting screw 410. The bottom of the lifting screw 410 is vertically connected to the surface of the pressure plate 300, thereby realizing the up and down movement of the pressure plate 300.

[0069] The driving gear set 421 of the present invention includes first and second driving gears of different diameters, and the driven gear set 422 includes first and second driven gears of different diameters. By meshing the first and second driving gears of different diameters with the first and second driven gears of different diameters, the transmission ratio of the pressure plate 300 can be adjusted.

[0070] The central driving device 400 of the shaft 430 of the present invention further includes a gear lever gear adjustment device 470, which includes a shift lever 471 and a shift fork 472. The shift adjustment device 470 is mounted on the top plate, the shift fork 472 is engaged with the support shaft of the driving gear set 421, and the shift lever 471 is movably mounted on the top plate. Figure 5As shown, the shift rod 471 can drive the shift fork 472 to move forward and backward along the direction of the input shaft 430, so that the driving gears of different diameters can be adjusted to mesh with the driven gears of different diameters, thereby adjusting the transmission ratio of the pressure plate 300. For example, the driving gear set 421 includes 1# driving gear and 3# driving gear, and the driven gear set 422 includes 2# driven gear and 4# driven gear. When the shift fork 472 drives the driving gear set 421 to move forward, 1# driving gear is engaged with 2# driven gear. Assuming that the gear ratio of 1# driving gear and 2# driven gear is n, at this time, the hand wheel rotates one circle, and the driven gear set 422 rotates n circles, so that the pressure plate can be quickly raised or lowered. By the same principle, when the shift fork 472 drives the driving gear set 421 to move backward, 3# driving gear is engaged with 4# driven gear. Assuming that the gear ratio of 4# driven gear and 3# driving gear is m, the hand wheel rotates m circles, and the driven gear set 422 rotates one circle, which can realize the downward pressing of the pressure plate with little effort.

[0071] The sensor assembly 500 of the present invention includes a pressure sensor installed on the upper part of the pressure plate for detecting the gas or liquid pressure in the fermentation tank 200, a weight sensor installed on the bottom plate for detecting the pressure applied downward by the driving device to the tobacco leaves through the pressure plate, a temperature sensor and a humidity sensor installed in the fermentation tank 200.

[0072] The pressure sensor, weight sensor, temperature sensor and humidity sensor are electrically connected to the controller 700 respectively. The pressure sensor, the pressure sensor in the bin, the temperature sensor and the humidity sensor respectively test the pressure of the pressing plate 300, the pressure in the fermentation tank 200, the temperature and humidity in the fermentation tank 200, and transmit the data to the controller 700. The controller 700 can automatically adjust the heating plate or the driving device 400 according to the data and preset instructions, and can also be controlled or adjusted through manual control buttons.

[0073] The fermentation tank 200 of the present invention is provided with a lower heating plate at the bottom, and the lower surface of the pressing plate 300 is provided with an upper heating plate. The upper heating plate is provided with through holes facing the air inlet 310 and the air outlet 320. The upper heating plate and the lower heating plate are electrically connected to the controller 700.

[0074] The lower heating plate and the upper heating plate are both made of silicone material, which can ensure that the surface of the tobacco block is heated evenly during the heating process without damaging the overall sealing effect. The controller 700 includes a control component for controlling the heating temperature of the upper and lower heating plates.

[0075] The side wall of the fermentation tank 200 of the present invention is transparent, so that the fermentation state of the tobacco leaves can be observed. Preferably, the side wall of the fermentation tank 200 is made of a double-layer material and has a heat-insulating effect.

[0076] The present invention further includes a display device, which is electrically connected to the controller 700 , so that the user can observe various indicators of the fermentation tank 200 and adjust the fermentation tank 200 according to the data.

[0077] The air inlet and outlet check valve assemblies of the present invention utilize a pressure-adjusting screw that applies a certain pressure to a spring, which in turn pushes up a sealing ball. By rotating the exhaust-adjusting pressure-adjusting screw, or second adjusting screw 343, and applying pressure to the second spring 342, the gas and liquid pressure inside the fermentation tank can be controlled. When the internal pressure of the fermentation tank exceeds the pressure applied to the second sealing ball 341 by the spring, the internal gas and liquid push up and out of the second sealing ball 341 (the pressure sensor now detects the internal pressure). When anaerobic or low-oxygen fermentation is required, simply adjust the exhaust-adjusting pressure-adjusting screw, or second adjusting screw 343, to the maximum setting (the tobacco leaf pressure is the pressure displayed on the external pressure digital display). The present invention can automatically control the pressure inside the sealed tank 200 and maintain it within a relatively stable range, making it suitable for certain constant-temperature anaerobic or low-oxygen tobacco leaf fermentation processes.

[0078] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anaerobic or oxygen-free tobacco fermentation device, characterized by: It comprises a support (100) for carrying a fermentation tank (200) and a driving device (400), A cylindrical fermentation tank (200) for installing tobacco leaves, A pressing plate (300) is matched with the inner wall of the cylindrical fermentation tank (200), a driving device (400) for driving the pressing plate (300) to move up and down in the fermentation tank (200), A sensor assembly (500) is provided in the fermentation tank (200), a controller (700) electrically connected to the driving device (400) and the sensor assembly (500), Wherein, an O-type sealing ring (600) is provided at the contact point between the outer periphery of the pressing plate (300) and the fermentation tank (200); An air inlet (310) and an air outlet (320) are provided on the pressure plate (300), and an air inlet check valve assembly (330) and an air outlet check valve assembly (340) are provided on the air inlet (310) and the air outlet (320), respectively. The air intake check valve assembly comprises a first sealing ball (331), a first spring (332) and a first adjusting screw (333); the upper end of the air intake port (310) cooperates with the first sealing ball (331); the opening diameter of the upper end of the air intake port (310) is smaller than the diameter of the first sealing ball (331); the top end of the first spring (332) contacts the first sealing ball (331); the bottom end of the first spring (332) contacts the first adjusting screw (333); and the first adjusting screw (333) is threadedly connected to the bottom of the air intake port (310); The gas outlet one-way valve assembly includes a second sealing ball (341), a second spring (342) and a second adjusting screw (343); the lower end of the gas outlet (320) cooperates with the second sealing ball (341); the opening diameter of the lower end of the gas inlet (310) is smaller than the diameter of the second sealing ball (341); the bottom end of the second spring (342) contacts the second sealing ball (341); the top end of the second spring (342) contacts the second adjusting screw (343); and the second adjusting screw (343) is threadedly connected to the top of the gas outlet (320); The sensor assembly (500) comprises a pressure sensor installed on the upper portion of the pressing plate for detecting the gas or liquid pressure in the fermentation tank (200), a weight sensor installed on the bottom plate for detecting the pressure applied downward by the driving device to the tobacco leaves through the pressing plate, and a temperature sensor and a humidity sensor installed in the fermentation tank (200).

2. The anaerobic or oxygen-free tobacco fermentation equipment according to claim 1, wherein: The bracket (100) comprises a bottom plate, a connecting rod and a top plate, wherein the upper and lower ends of the connecting rod are connected to the bottom plate and the top plate respectively. The fermentation tank (200) is installed on the bottom plate, and the driving device (400) is installed on the top plate.

3. The anaerobic or oxygen-free tobacco fermentation equipment according to claim 2, wherein: The driving device (400) comprises a spiral worm gear press, a lifting screw (410), a gear assembly (420), an input shaft (430) and a hand wheel (440). The spiral worm gear press comprises a lifting screw (410), the bottom of which is vertically connected to the surface of the pressing plate (300); The gear assembly (420) includes a driving gear set (421) and a driven gear set (422), wherein the driving gear set (421) is mounted on the input shaft (430), the gears of the driving gear set (421) and the driven gear set (422) are meshed, and the gears of the driven gear set (422) are meshed with the lifting screw (410); A mounting member (450) is provided on the top plate, and one end of the input shaft (430) is rotatably mounted on the mounting member (450); The hand wheel (440) is mounted on the other end of the input shaft (430).

4. The anaerobic or oxygen-free tobacco fermentation equipment according to claim 3, wherein: The driving gear set (421) includes a first driving gear and a second driving gear having different diameters, and the driven gear set (422) includes a first driven gear and a second driven gear having different diameters.

5. The anaerobic or oxygen-free tobacco fermentation equipment according to claim 4, characterized in that: The driving device (400) further includes a gear adjustment device (470), the gear adjustment device including a shift rod (471) and a shift fork (472), the gear adjustment device (470) being mounted on the top plate, the shift fork (472) being engaged with a support shaft of the driving gear set (421), and the shift rod (471) being movably mounted on the top plate.

6. The anaerobic or oxygen-free tobacco fermentation equipment according to claim 1, wherein: A lower heating plate is provided at the bottom of the fermentation tank (200), and an upper heating plate is provided on the lower surface of the pressing plate (300). The upper heating plate is provided with through holes facing the air inlet (310) and the air outlet (320). The upper heating plate and the lower heating plate are electrically connected to the controller (700).

7. The anaerobic or oxygen-free tobacco fermentation equipment according to claim 1, wherein: It also includes a display device, which is electrically connected to the controller (700).

Images