Tobacco leaf curing barn and tobacco leaf curing method

Abstract

The invention discloses a tobacco leaf curing barn and a tobacco leaf curing method, the tobacco leaf curing barn comprises a tobacco loading chamber, a curing frame, a driving assembly, a heating chamber and a fan, the curing frame is arranged in the tobacco loading chamber, and the curing frame comprises at least one tobacco hanging frame; the driving assembly drives the tobacco hanging frame to move up and down; the heating chamber is located on a partition wall of the tobacco containing chamber and communicated with the tobacco containing chamber. The draught fan is arranged in the heating chamber, and fan blades of the draught fan have the forward rotation direction and the reverse rotation direction so as to change the circulation direction of airflow between the heating chamber and the tobacco containing chamber. In the tobacco leaf curing barn, the curing rack drives the tobacco hanging rack to move up and down through the driving assembly, workers can conveniently place tobacco leaves on the tobacco hanging rack, hot air in the tobacco containing chamber can be evenly distributed through up-down movement of the tobacco hanging rack, the tobacco leaf curing quality is optimized, and when the humidity of the tobacco containing chamber is too high, the tobacco hanging rack can move up or down, so that the tobacco leaf curing efficiency is improved. The distance between the tobacco hanging frame and the ground or the top is increased, and water can be discharged out of the tobacco containing chamber. The device can be widely applied to the technical field of tobacco leaf baking.

Description

Technical Field

[0001] The present application relates to the technical field of tobacco leaf baking, and in particular to a tobacco leaf baking room and a tobacco leaf baking method. Background Art

[0002] During the tobacco baking process, workers usually place the braided tobacco stalks in the baking room. Workers place the tobacco stalks in three layers in the baking room. However, due to the high temperature and stuffiness in the baking room, the workers' work intensity is high and the risk factor is high. On the other hand, due to the uneven temperature or humidity in the baking room that does not meet the requirements, this will greatly affect the baking quality of the tobacco leaves. Summary of the invention

[0003] In order to solve at least one of the above-mentioned technical problems, the present application provides a tobacco leaf curing room and a tobacco leaf curing method, and the technical solution adopted is as follows.

[0004] The tobacco curing room provided in the present application includes a tobacco loading chamber, a baking rack, a driving assembly, a heating chamber and a fan. The baking rack is arranged in the tobacco loading chamber, and the baking rack includes at least one tobacco hanging rack; the driving assembly drives the tobacco hanging rack to move up and down; the heating chamber is located next to the tobacco loading chamber, and the heating chamber is connected to the tobacco loading chamber; the fan is arranged in the heating chamber, and the fan blades of the fan have two directions of forward rotation and reverse rotation to change the circulation direction of the airflow between the heating chamber and the tobacco loading chamber.

[0005] In certain embodiments of the present application, the side wall between the heating chamber and the smoke loading chamber is provided with air holes at the top and the bottom respectively.

[0006] In certain embodiments of the present application, the cigarette hanging rack includes at least two cigarette hanging layers, and two adjacent cigarette hanging layers are connected by a connecting rod or a flexible cable.

[0007] In certain embodiments of the present application, the baking rack comprises a column, the column is provided with a vertical guide structure, and at least one of the cigarette hanging layers in the cigarette hanging rack is slidably connected to the guide structure.

[0008] In certain embodiments of the present application, a support leg is provided at the bottom of the cigarette hanging layer.

[0009] In certain embodiments of the present application, the cigarette hanging racks are distributed in at least two rows, and the cigarette hanging racks in each row share one driving assembly.

[0010] In certain embodiments of the present application, the driving assembly is connected to the cigarette hanging rack via a traction rope, and the baking rack is provided with a fixed pulley for redirecting the traction rope.

[0011] The tobacco leaf baking method provided in the present application is implemented based on a tobacco leaf baking room. During the tobacco leaf baking process, when the humidity in the tobacco loading chamber reaches 75%, the tobacco hanging rack moves up and down a set distance L1 starting from the initial position with a set time length A as a cycle.

[0012] In certain embodiments of the present application, when the humidity in the smoke chamber is 90%, if the hot air flow in the smoke chamber is ascending, the smoke rack is lowered by a set distance L2; if the hot air flow in the smoke chamber is descending, the smoke rack is raised by a set distance L3.

[0013] In certain embodiments of the present application, when the humidity in the smoke chamber is 90%, with a set duration B as one cycle, and B is less than A, the cigarette rack moves up and down a set distance L4 starting from the initial position.

[0014] The present application has at least the following beneficial effects: in a tobacco leaf curing room, the curing rack uses a driving assembly to move the tobacco hanging rack up and down, which is convenient for workers to place tobacco leaves on the tobacco hanging rack, and the up and down movement of the tobacco hanging rack can evenly distribute the hot air flow in the tobacco loading room, optimize the curing quality of tobacco leaves, and when the humidity in the tobacco loading room is too high, the tobacco hanging rack can move up or down to increase the distance between the tobacco hanging rack and the ground or the top, which helps to discharge moisture out of the tobacco loading room. The present application can be widely used in the field of tobacco leaf curing technology.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present application is further illustrated below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0017] Figure 1 This is a structural diagram of a baking rack.

[0018] Figure 2 This is a structural diagram of a baking rack.

[0019] Figure 3 This is a structural diagram of the lowering of the smoke rack in the baking rack.

[0020] Figure 4 This is a structural diagram of the rising smoke rack in the baking rack.

[0021] Figure 5 This is a schematic diagram of the structure of a tobacco curing room.

[0022] Figure numerals: 100, smoke loading chamber; 200, heating chamber; 210, fan; 220, air hole; 300, baking rack; 310, fixed pulley; 321, column; 322, beam; 410, smoke hanging layer; 411, support leg; 500, drive assembly; 510, traction rope. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0024] In the description of the present application, it should be understood that the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application 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 a limitation on the present application.

[0025] In the description of this application, "several" means more than one, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the description of the present application, if the reference terms "as an implementation", "an embodiment", "some instances", "some embodiments", "illustrative embodiment", "example", "specific example", "some examples", etc. appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0028] The present application relates to a tobacco leaf curing room, Figure 5 The tobacco leaf curing room includes a baking rack 300, a tobacco loading chamber 100 and a heating chamber 200. The baking rack 300 is arranged in the tobacco loading chamber 100, and the heating chamber 200 is located next to the tobacco loading chamber 100. The heating chamber 200 is connected with the tobacco loading chamber 100. The tobacco leaves are arranged on the baking rack, and the hot air flow enters the tobacco loading chamber 100 from the heating chamber 200 to create a high-temperature baking environment.

[0029] Furthermore, the tobacco leaf curing barn includes a heating component, which is arranged in the heating chamber 200 , and the heating component is used to heat the air, thereby providing hot air flow for the tobacco loading chamber 100 .

[0030] It is understandable that, combined with the Figure 5 The tobacco leaf curing room includes a fan 210, which is arranged in the heating chamber 200, and provides power for the hot air flow to circulate between the heating chamber 200 and the smoke loading chamber 100. Under the agitation of the fan 210, the hot air flow generated by the heating component enters the smoke loading chamber 100, and the air flow in the smoke loading chamber 100 can flow back to the heating chamber 200.

[0031] As an implementation method, in combination with the attached Figure 5 The side walls between the heating chamber 200 and the smoke loading chamber 100 are respectively provided with air holes 220 at the top and the bottom, so as to realize the communication and airflow circulation between the heating chamber 200 and the smoke loading chamber 100.

[0032] Furthermore, two air holes 220 are provided, wherein one air hole 220 is located at the bottom of the side wall, and the other air hole 220 is located at the top of the side wall, so that the hot air flow can diffuse throughout the entire smoke loading chamber 100 after entering the smoke loading chamber 100 .

[0033] As an implementation manner, the fan blades of the fan 210 have two directions of forward rotation and reverse rotation to change the circulation direction of the airflow between the heating chamber 200 and the smoke loading chamber 100 .

[0034] When the fan 210 rotates forward, the air hole 220 at the bottom is the air inlet of the smoke chamber 100, and the air hole 220 at the top is the return air outlet. The hot air flow flows from bottom to top in the smoke chamber 100 to form an ascending hot air flow, and the high-temperature air flow is at the top.

[0035] When the fan 210 is reversed, the air hole 220 at the top is the air inlet of the smoke chamber 100, and the air hole 220 at the bottom is the return air outlet. The hot air flow flows from top to bottom in the smoke chamber 100 to form a descending hot air flow, and the high-temperature air flow is at the bottom.

[0036] It should be noted that the forward rotation and reverse rotation of the fan 210 are relative, and do not specifically refer to a certain rotation direction of the fan 210 as forward rotation or reverse rotation, and the operator can easily control the operation of the fan 210 through control.

[0037] The other components and operations of the tobacco leaf curing room have been recorded in the relevant technology for ordinary technicians in this field and will not be described in detail here. The structure of the baking rack will be introduced below.

[0038] The present application relates to a baking rack, combined with an attached Figure 1 To Attachment Figure 4 The baking rack includes at least one cigarette hanging rack, which is arranged on the baking rack 300. The baking rack has a bracket for installing the cigarette hanging rack, and tobacco leaves are arranged on the cigarette hanging rack. The cigarette hanging rack includes at least one cigarette hanging layer 410 to increase the capacity of the cigarette hanging rack. For example, the cigarette hanging layer 410 is arranged in three layers: upper, middle and lower.

[0039] Furthermore, combined with Figure 2 The tobacco leaf curing room includes a driving assembly 500, which is connected to the tobacco hanging rack and is located on one side of the baking rack 300. The driving assembly 500 includes a motor, and the driving assembly 500 drives the tobacco hanging rack to move up and down, so as to move the tobacco hanging layer 410 of the tobacco hanging rack to a height suitable for workers to place tobacco leaves, thereby avoiding workers from climbing high to place tobacco leaves, reducing labor intensity and risk factors, improving tobacco loading efficiency and standardization, increasing the number of loaded tobacco, and improving the safety of tobacco loading operations.

[0040] On the other hand, the driving component 500 drives the tobacco hanging rack to move up and down. During the yellowing period of the tobacco leaves and the early stage of color fixing, the height of the tobacco leaves is adjusted up and down according to the changing state of the tobacco leaves and the humidity of the tobacco loading chamber, so as to promote the tobacco leaves to be heated evenly, thereby avoiding large differences in temperature and humidity between the upper and lower layers of the tobacco leaves, preventing the tobacco leaves from being roasted green or covered with ash, and helping to improve the overall quality of the tobacco leaves.

[0041] It should be noted that in order to prevent the drive assembly 500 from being damaged by a high temperature environment, the drive assembly 500 is arranged outside the tobacco curing room.

[0042] As an embodiment, the driving assembly 500 is connected to the cigarette hanging rack via a traction rope 510, and the wheel connected to the motor of the driving assembly 500 winds up and releases the traction rope 510, so that the cigarette hanging rack moves up and down. The traction rope 510 is made of steel rope, which is strong and resistant to high temperature. It is understandable that the operator can easily control the operation of the driving assembly 500 through the controller.

[0043] Drag cables 510 are fixedly arranged at the four corners of the cigarette hanging rack, and the four drag cables 510 are connected to the wheel disc of the driving assembly 500. Furthermore, the baking rack 300 is provided with a fixed pulley 310 for redirecting the drag cables 510, and the fixed pulley 310 is located at the top of the baking rack 300. The fixed pulley 310 is used to limit the arrangement direction of the drag cables 510, so that the drag cables 510 extend from the cigarette hanging rack to the wheel disc of the driving assembly 500.

[0044] As an embodiment, when there are multiple cigarette racks, at least two cigarette racks share one driving assembly 500. The traction ropes 510 of each cigarette rack extend to the wheel of the shared driving assembly 500, and the cigarette racks sharing the same driving assembly 500 can move up and down synchronously, thereby reducing the number of driving assemblies 500.

[0045] Furthermore, the cigarette racks are arranged in an array, the cigarette racks are arranged in at least two rows, at least two drive assemblies 500 are provided, each row of cigarette racks shares one drive assembly 500, the drive assembly 500 is located at one end of a row of cigarette racks, and the traction ropes 510 connected to the cigarette racks in this row all use at least one fixed pulley 310 to limit the extension path so that the traction ropes 510 extend to the pulley of the drive assembly 500.

[0046] As an implementation method, in combination with the attached Figure 1 The baking rack 300 includes a plurality of columns 321, each column 321 is distributed according to the nodes of the array. The baking rack 300 includes a crossbeam 322, the crossbeam 322 is fixedly connected to the column 321, and then the crossbeam 322 and the column 321 form the baking rack 300, and each smoke rack array is distributed in the baking rack 300.

[0047] In order to enable the cigarette rack to move up and down smoothly, the column 321 is provided with a vertical guide structure, and at least one cigarette hanging layer 410 in the cigarette rack is slidably connected to the guide structure. It can be understood that adjacent cigarette racks can share a column 321, and the column 321 is provided with a guide structure for each cigarette rack.

[0048] It should be noted that, when the cigarette hanging rack includes at least two cigarette hanging layers 410, the cigarette hanging rack is configured so that each cigarette hanging layer 410 is slidably connected to the guide structure, or the top cigarette hanging layer 410 in the cigarette hanging rack is slidably connected to the guide structure, or the bottom cigarette hanging layer 410 in the cigarette hanging rack is slidably connected to the guide structure.

[0049] In some examples, the guide structure is configured as a guide groove, and the cigarette hanging layer 410 moves up and down along the guide structure through rollers, and rollers are respectively provided at the four corners of the cigarette hanging layer 410. It is understandable that the guide structure also has at least the following alternative examples: the guide structure is configured as a guide rail, and the roller is configured as an I-shaped wheel; or the guide structure is configured as a guide rod, and the guide structure passes through the cigarette hanging layer 410.

[0050] As an embodiment, when the cigarette hanging rack includes at least two cigarette hanging layers 410, two adjacent cigarette hanging layers 410 are connected by a flexible rope. Each cigarette hanging layer 410 is stacked one by one, and the driving component 500 lifts the cigarette hanging layers 410 one by one, so that the cigarette hanging layers 410 are placed layer by layer from top to bottom. Specifically, after the top cigarette hanging layer 410 is placed with tobacco leaves, the driving component 500 lifts the top cigarette hanging layer 410, so that tobacco leaves are placed in the next cigarette hanging layer 410.

[0051] Furthermore, the flexible rope adopts steel chain or steel wire.

[0052] Regarding the connection between two adjacent cigarette hanging layers 410, at least it can be designed as follows: the two adjacent cigarette hanging layers 410 are connected by a connecting rod. In this case, the cigarette hanging frame becomes a fixed frame structure.

[0053] As an implementation mode, the bottom of the cigarette hanging layer 410 is provided with supporting feet 411. Specifically, the four corners of the bottom of the cigarette hanging layer 410 are respectively provided with supporting feet 411.

[0054] It is understandable that, when the cigarette hanging rack includes at least two cigarette hanging layers 410, at least the bottom cigarette hanging layer 410 of the cigarette hanging rack is provided with a baking rack 300 to prevent the bottom cigarette hanging layer 410 from contacting the ground after the cigarette hanging rack falls to the ground.

[0055] In some examples, the Figure 3 and attached Figure 4 When two adjacent cigarette hanging layers 410 are connected by a flexible rope, a support leg 411 is provided at the bottom of each cigarette hanging layer 410 so that there is a gap between the stacked cigarette hanging layers 410 .

[0056] In some other examples, when two adjacent cigarette hanging layers 410 are fixedly connected by a connecting rod, the bottom cigarette hanging layer 410 is provided with supporting legs 411 .

[0057] The content of the baking method in the present application is described in detail below in conjunction with specific embodiments. It should be noted that the following description is only an exemplary description and is not a specific limitation to the present application.

[0058] The present application relates to a tobacco leaf baking method. During the tobacco leaf baking process, when the humidity of the tobacco loading chamber reaches 75%, the tobacco hanging rack moves up and down a set distance L1 starting from an initial position with a set time length A as one cycle. Specifically, within one cycle, the movement trajectory of the tobacco hanging rack is: initial position, rise L1, initial position, fall L1, initial position.

[0059] When the humidity in the tobacco loading room is 90%, it is necessary to speed up the removal of moisture from the tobacco leaf curing room. If the hot air flow in the tobacco loading room is ascending, the tobacco hanging rack will drop a set distance L2 to increase the space on the upper side of the tobacco hanging rack. If the hot air flow in the tobacco loading room is descending, the tobacco hanging rack will rise a set distance L3 to increase the space on the lower side of the tobacco hanging rack. This operation will not stop until the humidity drops to 75% and will resume to the tobacco hanging rack moving up and down a set distance L1 periodically according to the time length A. Such a cycle can effectively promote the yellowing and drying of tobacco leaves in the entire room, achieve coordinated yellowing and softness, and synchronous yellowing and drying, which can effectively improve the quality of post-cured tobacco, improve the utilization efficiency of the curing room, and reduce the use of baking fuel.

[0060] When the humidity in the tobacco loading room is 90%, the tobacco hanging rack moves up and down a set distance L4 with a set duration B as a cycle, and B is less than A. The frequency of the tobacco hanging rack moving up and down is accelerated to break the stability of the moisture layer in the tobacco loading room, speed up the drying speed of tobacco leaves, and reduce the speed of enzymatic browning reaction of tobacco leaves. This operation is not stopped until the humidity drops to 75% and resumes to the tobacco hanging rack moving up and down a set distance L1 periodically according to the duration A.

[0061] It should be noted that if the humidity in the smoke chamber still cannot be reduced to 75% when the cigarette hanging rack descends by a distance L2 or ascends by a distance L3, then increasing the frequency of the cigarette hanging rack moving up and down can quickly break the stability of the moisture layer.

[0062] The values ​​of L1, L2, L3 and L4 may be set to the same distance or different distances, depending on the actual situation.

[0063] Table 1: Yellowing stage baking process (first stage)

[0064]

[0065]

[0066] Table 2: Yellowing-fixing baking process (second stage)

[0067]

[0068] The above is a detailed description of the implementation methods of the present application in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A tobacco leaf curing barn, characterized in that: include Install smoke chamber; A baking rack, the baking rack being arranged in the smoke loading chamber, the baking rack comprising at least one smoke hanging rack; A driving assembly, wherein the driving assembly drives the cigarette hanging rack to move up and down; A heating chamber, the heating chamber is located next to the smoke loading chamber, and the heating chamber is communicated with the smoke loading chamber; The fan is arranged in the heating chamber, and the fan blades of the fan have two directions of forward rotation and reverse rotation to change the circulation direction of the airflow between the heating chamber and the smoke loading chamber.

2. The tobacco leaf curing barn according to claim 1, characterized in that: The side wall between the heating chamber and the smoke loading chamber is provided with air holes at the top and the bottom respectively.

3. The tobacco leaf curing barn according to claim 1, characterized in that: The cigarette hanging rack comprises at least two cigarette hanging layers, and two adjacent cigarette hanging layers are connected by a connecting rod or a flexible cable.

4. The tobacco leaf curing barn according to claim 3, characterized in that: The baking rack comprises a column, and the column is provided with a vertical guide structure. At least one of the cigarette hanging layers in the cigarette hanging rack is slidably connected to the guide structure.

5. The tobacco leaf curing barn according to claim 3 or 4, characterized in that: The bottom of the cigarette hanging layer is provided with supporting feet.

6. The tobacco leaf curing barn according to claim 1, characterized in that: The cigarette hanging racks are distributed in at least two rows, and the cigarette hanging racks in each row share one driving assembly.

7. The tobacco leaf curing barn according to claim 1 or 6, characterized in that: The driving assembly is connected to the cigarette hanging rack via a traction rope, and the baking rack is provided with a fixed pulley for redirecting the traction rope.

8. A tobacco leaf baking method, characterized in that: The tobacco leaf baking method is implemented based on the tobacco leaf baking barn as described in any one of claims 1 to 7. During the tobacco leaf baking process, when the humidity in the tobacco loading chamber reaches 75%, the tobacco hanging rack moves up and down a set distance L1 starting from an initial position with a set time length A as a cycle.

9. The tobacco leaf baking method according to claim 8, characterized in that: When the humidity in the smoke chamber is 90%, if the hot air flow in the smoke chamber is ascending, the smoke rack is lowered by a set distance L2; if the hot air flow in the smoke chamber is descending, the smoke rack is raised by a set distance L3.

10. The tobacco leaf baking method according to claim 8 or 9, characterized in that: When the humidity in the smoke chamber is 90%, with a set time length B as a cycle, and B is less than A, the smoke rack moves up and down a set distance L4 starting from the initial position.

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