Step-by-step intelligent baking factory and tobacco leaf baking method

Abstract

The present invention relates to the technical field of tobacco leaf baking, and in particular to a step-by-step intelligent baking factory and a tobacco leaf baking method. The system comprises: a baking barn main body, comprising a baking barn frame, and several single-room baking barns connected in sequence along the length direction of the baking barn frame. Several tobacco baskets are provided in the single baking barns. A slide rail and a dragging device are provided at the bottom of the baking barn main body. The dragging device drives the tobacco baskets to move along the slide rail from front to back in each single baking barn in sequence during the back-and-forth reciprocating motion. A heat pump main body, comprising several heat pump chambers and rehumidification chambers, the heat pump chambers and rehumidification chambers being connected to the single baking barns respectively, and the heat pump chambers providing baking heat for the single baking barns. A central control room, connected to the baking barn main body and the heat pump main body respectively. The system achieves accurate control of the tobacco leaf baking temperature, allowing the tobacco leaf to automatically undergo baking processes such as yellowing, color setting, drying, and rehumidification, thereby improving not only the baking quality of the tobacco leaf, but also the baking efficiency of the tobacco leaf.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco leaf baking, and in particular to a step-by-step intelligent baking factory and a tobacco leaf baking method. Background Art

[0002] The existing yellow tobacco curing method usually involves weaving fresh tobacco leaves onto tobacco clips, which are then hung in layers on fixed tobacco racks in a tobacco curing room. The entire curing process requires a fixed curing room, which has the following drawbacks:

[0003] First, existing curing houses use coal or straw as fuel. During the fuel combustion process, the fuel feeding is usually controlled manually, which is time-consuming and labor-intensive, and causes serious environmental pollution.

[0004] Secondly, when the above-mentioned fuel combustion method is used to provide heat to the baking room, the baking temperature is difficult to control, which affects the baking quality. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and propose a step-by-step intelligent baking factory and a tobacco baking method, which realizes the accurate control of the tobacco baking temperature, so that the tobacco leaves automatically undergo the baking processes of yellowing, color fixing, drying, and regaining moisture, which not only improves the baking quality of the tobacco leaves, but also improves the baking efficiency of the tobacco leaves.

[0006] The technical solution of the present invention is: a step-by-step intelligent baking factory, which includes:

[0007] The main body of the curing room includes a curing room frame and several single curing rooms connected in sequence along the length of the curing room frame. Several tobacco baskets are set in the single curing rooms. The bottom of the curing room body is provided with a slide rail and a drag device. The drag device drives the tobacco baskets to move along the slide rail from front to back in each single curing room in sequence during the back-and-forth motion.

[0008] The heat pump body includes several heat pump rooms and rehumidification rooms. The heat pump rooms and rehumidification rooms are respectively connected to a single baking room. The heat pump rooms provide baking heat for the single baking room.

[0009] The central control room is connected to the main body of the baking room and the main body of the heat pump respectively.

[0010] In the present invention, the single room at the front end of the main body of the curing room is the smoke loading room, and the single room at the rear end of the main body of the curing room is the moisture-recovery and smoke unloading room;

[0011] Several single-room baking rooms between the smoke loading room and the smoke rehumidification and unloading room are baking rooms;

[0012] The baking chamber comprises a plurality of yellowing baking chambers, a plurality of color fixing baking chambers, and a plurality of tendon drying baking chambers which are arranged in sequence.

[0013] A single baking room includes:

[0014] The maintenance door and heat pump room partition wall are set on both sides of the baking room frame. The top of the heat pump room partition wall is equipped with an air inlet, the bottom of the heat pump room partition wall is equipped with an air return port, and the maintenance door is equipped with a temperature sensor;

[0015] As well as the top plate, bottom plate, maintenance door, heat pump room partition wall, top plate and bottom plate form a separate cavity, and a number of smoke baskets are arranged in the cavity;

[0016] Upper connecting plates are respectively fixed on the bottom surface of the top and along the adjacent edges of the adjacent single baking rooms.

[0017] The cigarette basket comprises:

[0018] The frame of the cigarette basket is in the shape of a tetrahedron, with several layers of cigarette holders hanging on it;

[0019] The baking room partition door is fixed on the rear end face of the smoke basket frame. The baking room partition door and the upper connecting plate above it form a wall for isolating two adjacent single baking rooms;

[0020] The pulley mechanism is arranged at the bottom of the cigarette basket frame and comprises a pulley which rotates around a central axis. A push rod is fixed on the inner side of the central axis of the pulley.

[0021] The dragging device comprises a dragging tube mechanism and a chain transmission mechanism. The chain transmission mechanism is connected to the dragging tube mechanism, and the pushing tube mechanism pushes the cigarette basket to move.

[0022] The drag tube mechanism comprises:

[0023] The drag pipe support is U-shaped and fixedly connected to the bottom of the baking room frame;

[0024] The bracket support plate is fixedly arranged at the bottom of the U-shaped groove of the drag pipe support seat, and an intermediate shaft is fixed on the top thereof, and first bearings are respectively provided at both ends of the intermediate shaft;

[0025] The threading tube and the dragging tube are both arranged in the U-shaped groove of the dragging tube support seat. The bottoms of the threading tube and the dragging tube are respectively in contact with the first bearings at both ends of the intermediate shaft, and the threading tube and the dragging tube slide relative to the first bearings.

[0026] The cigarette basket drag rod is arranged corresponding to the pulley at the bottom of the cigarette basket. It is arranged in the cavity of the drag tube, is rotatably connected to the drag tube through a rotating shaft, and is connected to the piston rod of the self-resetting cylinder. The top surface of the drag tube corresponding to the cigarette basket drag rod is provided with an opening. In the initial state, the piston rod of the self-resetting cylinder is retracted, and the cigarette basket drag rod is horizontally arranged in the cavity of the drag tube. In the dragging state, the piston rod of the self-resetting cylinder is extended to push the cigarette basket drag rod to rotate to a vertical direction, and the upper end of the cigarette basket drag rod contacts the push rod inside the pulley.

[0027] The chain transmission mechanism comprises:

[0028] The motor has an output shaft connected to the input shaft of the reducer through a belt;

[0029] A reducer, the output shaft of which is fixed with a first sprocket;

[0030] A drive chain is wound around the first sprocket and the second sprocket;

[0031] The driven chain is wound around the third sprocket and the fourth sprocket. The second sprocket and the third sprocket are coaxially arranged. A drag tube connecting block is provided on the driven chain. The drag tube connecting block is fixedly connected to the bottom surface of the drag tube.

[0032] The present invention also includes a method for baking tobacco leaves using the above-mentioned step-by-step intelligent baking factory, which includes the following steps:

[0033] S1. Clamp tobacco leaves on cigarette clips, and place the cigarette clips in layers in a cigarette basket;

[0034] S2. Place the tobacco basket at the front end of the main body of the baking room. During the operation of the dragging device, push the tobacco basket in turn, so that the tobacco basket moves along the slide rail into the next single baking room for baking;

[0035] S3. After baking is completed, the smoke basket is removed from the rear end of the baking room body.

[0036] In the above step S2, by controlling the number of single curing rooms and the heating temperature of the single curing rooms, the curing time of the tobacco baskets in each single curing room is made consistent.

[0037] In the above step S2, using the dragging device to push the tobacco basket to the next single baking room includes the following steps:

[0038] S2.1. The self-resetting cylinder is activated. During the stretching process, the piston rod drives the connected cigarette basket drag rod to rotate, causing the cigarette basket drag rod to rotate from its initial horizontal direction to the vertical direction. At this time, the top of the cigarette basket drag rod contacts the push rod inside the pulley.

[0039] S2.2. The motor starts to move, driving the driven chain through the belt drive and chain drive in sequence. The driven chain drives the drag tube fixed to it to move backward. The tobacco basket drag rod connected to the drag tube pushes the push rod and pulley to move backward. The pulley drives the tobacco basket backward to the next single baking room.

[0040] S2.3. After the cigarette basket is pushed into place, the drag tube stops moving, the piston rod of the self-resetting cylinder automatically resets, and drives the cigarette basket drag rod connected to it to rotate from the vertical direction to the initial horizontal state. At this time, there is no connection between the drag tube and the cigarette basket, and the motor reverses to drive the driven chain to move in the opposite direction, thereby driving the drag tube fixedly connected to the driven chain to move forward, realizing the back and forth movement of the drag tube.

[0041] The beneficial effects of the present invention are:

[0042] (1) In the present application, by adopting a dragging device, the dragging tube can realize the step-by-step movement of the tobacco basket during the reciprocating movement, and at the same time can drive all the tobacco baskets in the main body of the flue-curing room to be linked simultaneously, thereby realizing the automation of the tobacco flue-curing process and the automated operation of tobacco flue-curing, and greatly improving the tobacco flue-curing efficiency;

[0043] (2) The number and heating temperature of single-room curing rooms are set for different tobacco leaves in combination with their key process temperatures, ensuring the continuity of the movement of all tobacco baskets in the main body of the curing room. At the same time, the accurate control of the curing temperature in the single-room curing room can be guaranteed, which not only improves the curing quality of tobacco leaves, but also improves the curing efficiency of tobacco leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a structural diagram of the step-by-step intelligent baking factory of the present invention;

[0045] Figure 2 It is a structural diagram of the main body of the baking room;

[0046] Figure 3 It is the operation distribution diagram of the main body of the curing room and the tobacco baskets;

[0047] Figure 4 This is the first three-dimensional structural diagram of a single baking room;

[0048] Figure 5 This is the second three-dimensional structural diagram of a single baking room;

[0049] Figure 6 It is a schematic diagram of the three-dimensional structure of the cigarette basket;

[0050] Figure 7 Schematic diagram of the three-dimensional structure of the slide rail and the dragging device in this embodiment;

[0051] Figure 8 yes Figure 7 A local enlarged view of point A in FIG;

[0052] Figure 9 It is a structural diagram of the drag tube support seat;

[0053] Figure 10This is a structural diagram of the threading tube and the drag tube being arranged in the drag tube support seat;

[0054] Figure 11 is a second three-dimensional structural diagram of the slide rail and the dragging device in this embodiment;

[0055] Figure 12 yes Figure 11 A local enlarged view of point B in FIG;

[0056] Figure 13 This is a schematic diagram of the structure when the drag tube pushes the cigarette basket;

[0057] Figure 14 It is a structural diagram of the heat pump room.

[0058] Figure: 1 Awning; 2 Curing room body; 3 Heat pump body; 4 Central control room; 5 Curing room frame; 6 Single room Curing room; 601 Smoke loading room; 602 Curing room; 603 Rehumidification and unloading room; 7 Smoke loading basket; 8 Slide rail; 9 Lifting frame; 10 Maintenance door; 11 Heat pump room partition wall; 12 Top plate; 13 Bottom plate; 14 Upper connecting plate; 15 Observation window; 16 Temperature sensor; 17 Air inlet; 18 Return air outlet; 19 Smoke basket frame; 20 Pulley; 21 Support frame; 22 Push rod; 23 Smoke clamp; 24 Wire mesh; 25 Curing room partition door; 26 Threading pipe; 27 Drag pipe; 28 Drag pipe support seat; 29 U-shaped slot; 30 Bracket Support plate; 31 intermediate shaft; 32 first bearing; 33 cigarette basket drag rod; 34 opening; 35 self-resetting cylinder; 36 position sensor; 37 electric motor; 38 reducer; 39 driving sprocket; 40 small pulley; 41 large pulley; 42 belt; 43 first sprocket; 44 second sprocket; 45 third sprocket; 46 fourth sprocket; 47 driven chain; 48 drag pipe connecting block; 49 chain buckle connecting plate; 50 tension sensor; 51 first transmission shaft; 52 second transmission shaft; 53 heat pump room; 54 rehumidification room; 55 exterior wall; 56 heat pump heating element; 57 heat pump frame; 58 circulating fan; 59 cold air door. DETAILED DESCRIPTION

[0059] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0060] The following description sets forth specific details to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art will be able to make similar generalizations without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0061] like Figures 1 to 3As shown, the walk-through intelligent baking factory of the present invention includes a sunshade 1, a baking room body 2, a heat pump body 3, and a central control room 4. The sunshade 1 is located above the baking room body 2, the heat pump body 3, and the central control room 4, and the sunshade 1 provides protection for the baking room body 2, the heat pump body 3, and the central control room 4. The heat pump body 3 is installed on the side of the baking room body 2, and the heat pump body 3 is used to heat the baking room body 2. The central control room controls the operation of the baking room body 2 and the heat pump body 3.

[0062] The main body 2 of the curing barn is fixed to the ground. It consists of a curing barn frame 5, several individual curing rooms 6, a tobacco basket 7, and a dragging device. The curing barn frame 6 is rectangular in shape. Slide rails 8 are provided at the bottom of the curing barn frame 5 and extend along the length of the frame. Several individual curing rooms 6 are arranged along the length of the frame, interconnected and connected to form a single rectangular curing barn. The curing rooms are located within the curing barn frame 5. The tobacco basket 7, dragged by the dragging device, can slide along the slide rails 8 below it, allowing it to move sequentially from front to back to each individual curing room.

[0063] like Figure 2 and Figure 3 As shown, this embodiment includes fifteen single-chamber curing rooms, of which the frontmost single-chamber is a smoke loading room 601, the rearmost single-chamber is a smoke reheating and unloading room 603, and the thirteen single-chambers between the smoke loading room and the smoke reheating and unloading room are all baking rooms 602. Among these thirteen baking rooms, the first four baking rooms are yellowing baking rooms, the middle four baking rooms are color fixing baking rooms, and the last five baking rooms are rib drying baking rooms.

[0064] The tobacco baskets 7 are transported to the loading chamber and, pulled by a dragging device, pass through four yellowing chambers, four color-fixing chambers, and five rib-drying chambers, completing the entire curing process. The entire curing cycle takes about seven days. After curing, the tobacco leaves enter the rehumidification and unloading chamber for rehumidification. After this, they can be unloaded from the main flue-curing room and ready for subsequent processing.

[0065] Lifting racks 9 are installed at the bottom of the flue-curing barn frame, along its longitudinal front and rear ends. When the tobacco baskets 7 are transported into the tobacco loading chamber at the front end of the flue-curing barn, workers can stand on the lifting racks 9 and hang the tobacco clips, containing tobacco leaves, in layers on the upper portion of the lifting racks. Once the tobacco baskets are transported to the rehumidification and unloading chamber and the tobacco leaves are rehumidified, the tobacco curing process is complete. At this point, workers can stand on the rear lifting rack 9 and, as the lifting rack rises, remove the tobacco clips from the tobacco baskets 7. Then, as the lifting rack descends, the tobacco leaves are removed from the clips and subsequent operations are carried out.

[0066] like Figure 4 and Figure 5As shown, a single curing barn includes a maintenance door 10, a heat pump compartment partition wall 11, a top plate 12, and a bottom plate 13. The top plate 12 is fixed to the top of the curing barn frame, and the bottom plate 13 is fixed to the bottom of the frame. Both the top and bottom plates extend along the width of the curing barn frame. The maintenance door 10 and the heat pump compartment partition wall 11 are symmetrically positioned on either side of the curing barn frame, ensuring a hermetically sealed connection between adjacent panels that make up the single curing barn. Upper connecting plates 14 are fixed to the bottom surface of the top plate 12 and along the adjacent edges of the two adjacent curing barns. Combined with the smoke basket, the upper connecting plates 14 effectively separate the two adjacent curing barns, creating a separate curing area for each. In this embodiment, the maintenance door, heat pump compartment partition wall, top plate, and upper connecting plates that comprise the single curing barn are all made of polyurethane insulation board, while the bottom plate is made of cement board, enabling individual temperature control within each single curing barn.

[0067] In this embodiment, an observation window 15 is provided on each of the maintenance door 10 and the heat pump room partition wall 11, facilitating real-time monitoring of the baking conditions within the individual baking rooms and maintenance work. A temperature sensor 16 is also provided on the maintenance door 10, facilitating real-time monitoring and adjustment of the temperature within the individual baking rooms. An air inlet 17 is provided at the top of the heat pump room partition wall 11, and an air return vent 18 is provided at the bottom.

[0068] Each single curing room is equipped with at least one tobacco basket. In this embodiment, each room is equipped with two tobacco baskets, which are arranged along the width of the curing room frame. Correspondingly, two sets of slide rails are provided at the bottom of the curing room frame, each set corresponding to a tobacco basket. The two sets of slide rails include two slide rails extending along the length of the curing room frame. A pulley mechanism at the bottom of the tobacco basket slides on the slide rails, enabling the tobacco basket to slide.

[0069] like Figure 6 As shown, the cigarette basket 7 includes a tetrahedral cigarette basket frame 19, with a pulley mechanism installed at its base. In this embodiment, the pulley mechanisms are located at the four corners of the cigarette basket frame. The pulley mechanism includes a pulley 20, an axle, and a support frame 21. The axle is fixed to the center of the pulley 20, and both ends of the axle are rotatably mounted on the support frame 21. A push rod 22 is fixed to the inner end of the axle and located outside the pulley 20. In this embodiment, the axle and push rod can be an integrated structure.

[0070] The front end of the tobacco basket 7 is open, through which tobacco clips 23 are placed. In this embodiment, three layers of clips 23 are installed at the top of the basket 7. Steel mesh 24 is installed on the left and right sides of the basket frame to prevent tobacco from leaking. The right or left mesh is also configured as an openable door.

[0071] A drying room partition door 25 is fixed to the rear side of the tobacco basket frame. High-temperature sealing strips are provided on the four sides of the drying room partition door. The drying room partition door 25 and the upper connecting plate 14 of the single drying room form the wall of an independent drying room. In actual operation, each single drying room is equipped with a tobacco basket. The drying room partition door 25 on the rear side of each tobacco basket and the upper connecting plate 14 directly above it form a closed wall. These walls separate the adjacent single drying rooms, so that each tobacco basket is located in its own closed single drying room. At this time, the entire drying room body is divided into fifteen independent single drying rooms by the walls, fully realizing the physical isolation of each single drying room. At this time, the characteristics of each single drying room being relatively constant in temperature and not interfering with each other can be utilized. According to the baking process, the key temperature points of the flue-cured tobacco can be divided and each single drying room can be heated to different temperatures. The tobacco leaves in the tobacco baskets are baked at different temperatures and for different lengths of time in each single room as they pass through the entire main body of the drying room, and the tobacco leaves are baked from fresh tobacco to dry tobacco, completing the entire drying process.

[0072] In this application, the movement of the tobacco basket in the curing room is achieved through a dragging device. The dragging device includes a dragging tube mechanism and a chain transmission mechanism. The chain transmission mechanism realizes the reciprocating movement of the dragging tube mechanism; the dragging tube mechanism realizes the pushing of the tobacco basket.

[0073] like Figures 7 to 12 As shown, the dragging tube mechanism includes a threading tube 26 and a dragging tube 27. Both are hollow and rollably positioned within a U-shaped groove 29 of a dragging tube support 28, which is fixed to the curing barn frame. Both the threading tube 26 and the dragging tube 27 run along the length of the curing barn. The threading tube is used for routing electrical wiring within the curing barn. The dragging tube drives the tobacco basket forward.

[0074] In this embodiment, a corresponding drag tube mechanism is located on the inner side of each slide rail. This means that when the drag tube mechanism is in operation, it can drag each of the cigarette basket roller mechanisms, ensuring simultaneous operation of all of them. Therefore, in this embodiment, a drag tube support is located on the inner side of each slide rail. Several drag tube support supports are spaced along the length of the bottom of the baking barn frame.

[0075] The drag tube support 28 is a U-shaped frame with a U-shaped groove 29 within it. The top of the U-shaped frame is fixedly connected to the baking room frame. A support plate 30 is fixed to the bottom of the U-shaped groove. The support plate 30 is U-shaped and welded to the U-shaped frame. A horizontal intermediate shaft 31 is fixed to the top of the support plate 30. First bearings 32 are provided at each end of the intermediate shaft 31 for rotation.

[0076] The threading tube 26 and the dragging tube 27 are both disposed within the U-shaped groove 29, and are positioned above two first bearings 32, respectively. The bottoms of the threading tube 26 and the bottoms of the dragging tube 27 contact the first bearings 32 at both ends of the middle portion, respectively. The threading tube 26 and the first bearings 32, and the dragging tube 27 and the first bearings 32, respectively, can slide back and forth. Therefore, the threading tube 26 and the dragging tube 27 can reciprocate within the U-shaped groove, with the first bearings 32 guiding the reciprocating movement of the threading tube and the dragging tube.

[0077] Each drag tube is equipped with several tobacco basket pull rods 33 spaced along its length, with the number of these rods corresponding to the number of tobacco baskets. In actual tobacco curing, the tobacco baskets are located within a single flue-curing room, and together with the upper connecting plate above them, they form a wall. Therefore, in this embodiment, a tobacco basket pull rod is provided on each drag tube directly below the upper connecting plate. The tobacco basket pull rods 33 are rotatably mounted within the cavity of the drag tube 27, with openings 34 defined at the top of the corresponding drag tube where the tobacco basket pull rods are located.

[0078] The cigarette basket drag rod 33 is rotatably connected to the side wall of the drag tube via a rotating shaft. The middle portion of the cigarette basket drag rod is connected to the piston rod of a self-resetting cylinder 35. The self-resetting cylinder 35 is housed within the cavity of the drag tube 27, and the cylinder body of the self-resetting cylinder 35 is fixedly connected to the drag tube 27. Correspondingly, a position sensor 36 is installed at each cigarette basket drag rod. This sensor is primarily used to detect whether the cigarette basket drag rod has been pushed to a vertical position.

[0079] In the initial state, the cigarette basket drag rod 33 is horizontal and completely located in the cavity of the drag tube 27. When the cigarette basket needs to be dragged, the self-resetting cylinder 35 is activated, the piston rod of the cylinder extends, and pushes the cigarette basket drag rod 33 connected to the piston rod to rotate along the rotating shaft until the cigarette basket drag rod rotates to extend from the opening 34 on the top surface of the drag tube and is in a vertical direction. When the cigarette basket drag rod 33 rotates to the vertical direction, the upper end of the cigarette basket drag rod 33 contacts the push rod 22 on the inner side of the pulley, as shown in FIG. Figure 13 When the chain transmission mechanism drives the drag tube to move backward, the cigarette basket drag rod on the drag tube will push the push rod in contact with it to move in the same direction, thereby achieving the backward movement of the cigarette basket.

[0080] After the tobacco basket moves along the slide rails to the next single-cell curing room, the drag tube 27 stops moving. At this point, the self-reset cylinder 35 stops supplying air, causing its piston rod to automatically reset, simultaneously driving the connected tobacco basket drag rod 33 to rotate and reset to a horizontal position. The tobacco basket drag rod 33 is now once again located within the cavity of the drag tube 27 and no longer in contact with the tobacco basket pulley mechanism. The chain drive mechanism rotates in the opposite direction, driving the drag tube 27 in the opposite direction and the drag tube mechanism forward, thus resetting the drag tube mechanism.

[0081] In the process of continuously repeating the above actions, the dragging pipe mechanism continuously pushes the tobacco baskets in each single curing room to the next single curing room, thereby completing the tobacco leaves in the tobacco baskets entering each single curing room for curing in turn.

[0082] Each drag tube mechanism is connected to a chain transmission mechanism. The chain transmission mechanism includes a driving chain part and a driven chain part. The driving chain part drives the driven chain part to rotate. The driven chain part is connected to the drag tube mechanism and drives the drag tube mechanism to move.

[0083] The active chain section includes a motor 37, a speed reducer 38, and a drive sprocket 39. The motor 37 and speed reducer 38 are connected via a belt drive. A small pulley 40 is fixed to the output shaft of the motor 37, and a large pulley 41 is provided on the input shaft of the speed reducer 38. A belt 42 is wound around the small pulley 40 and the large pulley 41, which realizes the transmission connection between the small pulley 40 and the large pulley 41. The power output of the motor 37 is transmitted to the speed reducer 38 via the belt drive.

[0084] The driving sprocket 39 is wound around the first sprocket 43 and the second sprocket 44. The first sprocket 43 is fixed on the output shaft of the reducer 38. The second sprocket 44 is fixedly connected to the third sprocket 45 through the transmission shaft. The second sprocket 44 and the third sprocket 45 are fixed on the transmission shaft at the same time.

[0085] The driven chain section includes a third sprocket 45, a fourth sprocket 46, and a driven chain 47. The third sprocket 45 and the fourth sprocket 46 are respectively arranged at the bottom of the baking barn frame, and the driven chain 47 is wound around the third sprocket 45 and the fourth sprocket 46. The driven chain 47 is fixedly connected to the bottom surface of the drag tube 27 via a drag tube connecting block 48.

[0086] Chain link plates 49 are installed at each end of the drag tube connection block 48, connecting the drag tube connection block 48 to the driven chain 47. A tension sensor 50 is also located in the middle of the drag tube connection block 48. This sensor detects the tension within the driven chain 47 in real time. When the weight of the fresh tobacco leaves in the basket exceeds the drag range, the tension sensor detects excessive tension. The sensor then transmits this tension to the central control room, which stops the main flue-curing barn operation, protecting the drag mechanism.

[0087] The power output by the motor 37 is transmitted to the reducer 38. After the speed reduction by the reducer 38, the first sprocket 39 rotates. The power is then transmitted to the second sprocket 44 through the drive sprocket 39. The second sprocket 44 then rotates the coaxial third sprocket 45. The rotation of the third sprocket 45 drives the entire driven chain 47 to move horizontally. This horizontal movement of the driven chain 47 also drives the drag tube 27 fixed to it to move.

[0088] In this embodiment, when the motor 37 rotates forward, the driven chain 47 drives the drag tube 27 backward. During the backward movement of the drag tube 27, the tobacco basket 7 is simultaneously pushed backward by the tobacco basket drag rod 33, thereby enabling the tobacco basket 7 to be sequentially moved to the next single baking room. When the motor 37 rotates reversely, the driven chain 47 drives the drag tube 27 forward. At this time, the drag tube 27 is not in contact with the tobacco basket 7. Therefore, the forward movement of the drag tube does not affect the tobacco basket, and the reset of the drag tube is achieved.

[0089] As can be seen from the above description, as the drag tube device is continuously pushed backward, the tobacco baskets are moved sequentially to each individual curing room, and the tobacco leaves in the baskets are cured in each individual curing room. However, during this process, the drag tube only moves back and forth within a set distance range.

[0090] The drive shafts of the active chain sections located below the same tobacco basket are fixedly connected. In this embodiment, the drive shafts of the two active chain sections located below the same tobacco basket are fixedly connected. Therefore, the drag tube device of this embodiment includes two drive shafts: a first drive shaft 51 and a second drive shaft 52. These drive shafts enable simultaneous movement of multiple active chain sections located below the same tobacco basket, ensuring that the chain drive mechanism can smoothly drive the drag tube mechanism and tobacco basket. Bearing blocks are provided at both ends and in the middle of the drive shafts, providing support for the drive shafts. The bearing blocks are fixed to the bottom of the curing barn frame.

[0091] The heat pump body includes several heat pump chambers 53 connected to the baking chambers, and rehumidification chambers 54 connected to the rehumidification and smoke unloading chambers. In this embodiment, the heat pump chambers 53 are fixed to the outside of the heat pump chamber insulation wall of the thirteen baking chambers, and the rehumidification chambers 54 are fixed to the outside of the heat pump chamber insulation wall of the rehumidification and smoke unloading chambers.

[0092] like Figure 14 As shown, the heat pump chamber includes an outer wall 55 made of insulation board, which is sealed to the heat pump chamber insulation wall of the baking chamber. A heat pump heater 56 is provided in the middle of the cavity of the outer wall 55. The heat pump heater 56 is mounted in the heat pump chamber via a heat pump bracket 57. A circulating fan 58 is provided above the heat pump heater 56. A cold air door 59 is provided at the bottom of the outer wall 55. The heat pump heater 56 heats the air above it, causing the hot air to rise. Under the action of the circulating fan 58, the hot air flows into the baking room through the air inlet 17 at the top of the heat pump chamber partition wall. The cold air in the baking room flows downward and flows back into the heat pump chamber through the return air vent 18 at the bottom of the heat pump chamber partition wall. Finally, it is discharged through the cold air door 59 at the bottom of the outer wall. This forms a convection of hot and cold air in the baking room, making it easier to control the baking temperature and improving the baking quality of the tobacco leaves.

[0093] The rehumidification room is equipped with a rehumidification machine, which is used to rehumidify the tobacco leaves in the rehumidification and unloading room.

[0094] A control system is installed in the central control room, which is connected to the main body of the baking room and the main body of the heat pump respectively. It accurately controls the baking temperature and baking time in each single baking room, realizes accurate control of the automatic action of the tobacco basket, and can accurately control the heating temperature of the heat pump main body.

[0095] The present invention also includes a method for baking tobacco leaves using the above-mentioned step-by-step intelligent baking factory, which includes the following steps.

[0096] First, tobacco leaves are clamped onto tobacco clips 23, which are then layered and placed in a tobacco basket 7. The tobacco basket 7 is then placed into the tobacco loading chamber 601. A tension sensor senses the tension within the driven chain. If the tension within the driven chain is too high, the sensor issues an alarm through the central control room, indicating that the tobacco in the basket is too heavy and requires that the amount of tobacco in the basket be reduced until the tension value sensed by the tension sensor returns to a normal range.

[0097] Next, the dragging device is activated, and the tobacco baskets are loaded into each single drying room in turn through the dragging device.

[0098] In this application, when designing the number of single curing rooms, it is mainly determined based on the time of each process corresponding to the specific tobacco leaves, so as to ensure that the time the tobacco baskets stay in each single curing room is basically the same.

[0099] The flue-curing barn body designed in this embodiment is mainly used for curing yellow tobacco. The process flow of curing yellow tobacco includes yellowing, color setting, drying, and rehumidification. In accordance with the different times and temperatures required for each process, four yellowing baking chambers are designed in the flue-curing barn body, and the temperature of each yellowing baking chamber is specifically set according to the characteristics of the yellowing process; four color setting baking chambers are designed, and the baking temperature of each color setting baking chamber is specifically set; five drying baking chambers are designed, and the baking temperature of each drying baking chamber is specifically set; and a rehumidification and unloading chamber is designed. Through the above design, it is ensured that the tobacco baskets stay and are cured for the same time in each single flue-curing barn, thereby ensuring the continuity of the tobacco baking in the tobacco baskets.

[0100] In this embodiment, each single curing room is equipped with two tobacco baskets. Curing of tobacco leaves begins as soon as the baskets enter the first yellowing and curing chamber. A heat pump chamber connected to this chamber accurately sets and controls the temperature within the chamber, ensuring that the tobacco leaves in the baskets are cured at the desired temperature. When the baskets have finished curing in the first chamber, a dragging device moves the baskets from that chamber into the second chamber. Simultaneously, the baskets in the remaining chambers also enter the next chamber.

[0101] When the dragging device is in operation, first, the self-resetting cylinder 35 is activated, and its piston rod drives the cigarette basket dragging rod 33 connected to it to rotate around the rotating axis during the stretching process, so that the cigarette basket dragging rod 33 rotates from the initial horizontal direction to the vertical direction. At this time, the upper end of the cigarette basket dragging rod 33 contacts the push rod 22 on the inner side of the pulley.

[0102] Then, the motor 37 is activated, and drives the driven chain 47 to move through belt drive and chain drive in sequence. During the movement of the driven chain 47, the drag tube 27 fixedly connected to it is driven to move backward. At this time, the tobacco basket drag rod 33 connected to the drag tube pushes the push rod 22 and the pulley 20 connected to the push rod to move backward, and the pulley 20 drives the tobacco basket 7 to move to the next baking chamber.

[0103] After the cigarette basket 7 is pushed into position, the motor stops, and the drag tube stops moving. The piston rod of the self-resetting cylinder 35 automatically resets, simultaneously driving the attached cigarette basket drag rod 33 to rotate from a vertical position to its initial horizontal position. At this point, there is no connection between the drag tube 27 and the cigarette basket 7. The motor 37 reverses, and through the belt drive and chain drive, it drives the driven chain 47 in the opposite direction, thereby driving the fixedly connected drag tube 27 in the opposite direction, thus resetting the drag tube 27.

[0104] Therefore, the reciprocating motion of the dragging tube continuously pushes the tobacco baskets in each curing chamber to the next. As the tobacco baskets move backward along the main body of the curing room, they undergo the yellowing, color setting, drying, and moisture regaining processes, completing the curing process from bright to dry tobacco.

[0105] Finally, the tobacco basket 7 is unloaded from the moisture-recovery and tobacco unloading chamber 603 of the main body of the curing room, and the dry tobacco is removed from the tobacco clip, and subsequent processes such as tobacco arrangement and inspection can be carried out.

[0106] The above is a detailed introduction to the step-by-step intelligent baking factory and tobacco baking method provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The above description of the disclosed embodiments enables professionals in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A step-by-step intelligent baking factory, characterized in that: include: The main body of the curing room includes a curing room frame and several single curing rooms connected in sequence along the length of the curing room frame. Several tobacco baskets are set in the single curing rooms. The bottom of the curing room body is provided with a slide rail and a drag device. The drag device drives the tobacco baskets to move along the slide rail from front to back in each single curing room in sequence during the back-and-forth motion. The heat pump body includes several heat pump rooms and rehumidification rooms. The heat pump rooms and rehumidification rooms are respectively connected to a single baking room. The heat pump rooms provide baking heat for the single baking room. The central control room is connected to the main body of the baking room and the main body of the heat pump; A single baking room includes: The maintenance door and heat pump room partition wall are set on both sides of the baking room frame. The top of the heat pump room partition wall is equipped with an air inlet, the bottom of the heat pump room partition wall is equipped with an air return port, and the maintenance door is equipped with a temperature sensor; As well as the top plate, bottom plate, maintenance door, heat pump room partition wall, top plate and bottom plate form a separate cavity, and a number of smoke baskets are arranged in the cavity; Upper connecting plates are fixed to the bottom surface of the top and along the adjacent edges of the adjacent single baking rooms; The cigarette basket comprises: The frame of the cigarette basket is in the shape of a tetrahedron, with several layers of cigarette holders hanging on it; The baking room partition door is fixed on the rear end face of the smoke basket frame. The baking room partition door and the upper connecting plate above it form a wall for isolating two adjacent single baking rooms; The pulley mechanism is arranged at the bottom of the cigarette basket frame and includes a pulley that rotates around a central axis, and a push rod is fixed on the inner side of the central axis of the pulley; The dragging device includes a dragging tube mechanism, and the dragging tube mechanism includes: The drag pipe support is U-shaped and fixedly connected to the bottom of the baking room frame; The bracket support plate is fixedly arranged at the bottom of the U-shaped groove of the drag pipe support seat, and an intermediate shaft is fixed on the top thereof, and first bearings are respectively provided at both ends of the intermediate shaft; The threading tube and the dragging tube are both arranged in the U-shaped groove of the dragging tube support seat. The bottoms of the threading tube and the dragging tube are respectively in contact with the first bearings at both ends of the intermediate shaft, and the threading tube and the dragging tube slide relative to the first bearings. The cigarette basket drag rod is arranged corresponding to the pulley at the bottom of the cigarette basket. It is arranged in the cavity of the drag tube, is rotatably connected to the drag tube through a rotating shaft, and is connected to the piston rod of the self-resetting cylinder. The top surface of the drag tube corresponding to the cigarette basket drag rod is provided with an opening. In the initial state, the piston rod of the self-resetting cylinder is retracted, and the cigarette basket drag rod is horizontally arranged in the cavity of the drag tube. In the dragging state, the piston rod of the self-resetting cylinder is extended to push the cigarette basket drag rod to rotate to a vertical direction, and the upper end of the cigarette basket drag rod contacts the push rod inside the pulley.

2. The step-by-step intelligent baking factory according to claim 1, characterized in that: The single room at the front end of the main body of the curing room is the smoke loading room, and the single room at the rear end of the main body of the curing room is the smoke unloading room; Several single-room baking rooms between the smoke loading room and the smoke rehumidification and unloading room are baking rooms; The baking chamber comprises a plurality of yellowing baking chambers, a plurality of color fixing baking chambers, and a plurality of tendon drying baking chambers which are arranged in sequence.

3. The step-by-step intelligent baking factory according to claim 1, characterized in that: The dragging device also includes a chain transmission mechanism, which is connected to a dragging tube mechanism, and the dragging tube mechanism drives the cigarette basket to move.

4. The step-by-step intelligent baking factory according to claim 3, characterized in that: The chain transmission mechanism comprises: The motor has an output shaft connected to the input shaft of the reducer through a belt; A reducer, the output shaft of which is fixed with a first sprocket; A drive chain is wound around the first sprocket and the second sprocket; The driven chain is wound around the third sprocket and the fourth sprocket. The second sprocket and the third sprocket are coaxially arranged. A drag tube connecting block is provided on the driven chain. The drag tube connecting block is fixedly connected to the bottom surface of the drag tube.

5. A method for baking tobacco leaves using the step-by-step intelligent baking factory according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Clamp tobacco leaves on cigarette clips, and place the cigarette clips in layers in a cigarette basket; S2. Place the tobacco basket at the front end of the main body of the baking room. During the operation of the dragging device, push the tobacco basket in turn, so that the tobacco basket moves along the slide rail into the next single baking room for baking; S3. After baking is completed, the tobacco basket is removed from the rear end of the main body of the baking room; In step S2, using a dragging device to push the tobacco basket to the next single baking room includes the following steps: S2.

1. The self-resetting cylinder is activated. During the stretching process, the piston rod drives the connected cigarette basket drag rod to rotate, causing the cigarette basket drag rod to rotate from its initial horizontal direction to the vertical direction. At this time, the top of the cigarette basket drag rod contacts the push rod inside the pulley. S2.

2. The motor starts to move, driving the driven chain through the belt drive and chain drive in sequence. The driven chain drives the drag tube fixed to it to move backward. The tobacco basket drag rod connected to the drag tube pushes the push rod and pulley to move backward. The pulley drives the tobacco basket backward to the next single baking room. S2.

3. After the cigarette basket is pushed into place, the drag tube stops moving, the piston rod of the self-resetting cylinder automatically resets, and drives the cigarette basket drag rod connected to it to rotate from the vertical direction to the initial horizontal state. At this time, there is no connection between the drag tube and the cigarette basket, and the motor reverses to drive the driven chain to move in the opposite direction, thereby driving the drag tube fixedly connected to the driven chain to move forward, realizing the back and forth movement of the drag tube.

6. The method for curing tobacco leaves according to claim 5, wherein In step S2, the baking time of the tobacco baskets in each single baking room is made consistent by controlling the number of single baking rooms and the heating temperature of the single baking rooms.

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