Stepping type tobacco leaf continuous baking treatment method

Abstract

The invention relates to a stepping type tobacco leaf continuous baking treatment method. A device comprises a lifting platform, a tobacco baking chamber and a moisture regaining device. The traveling driving device drives the tobacco hanging frame to move among the tobacco curing chamber, the moisture regaining device and the lifting platform. The lifting platform, the tobacco curing chambers and the moisture regaining device are arranged in sequence. And temperature and humidity monitoring devices are arranged in the tobacco curing chamber and the moisture regaining device. The invention also discloses a leaf baking method. Tobacco leaves can be automatically and continuously baked through digital control.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue-cured tobacco equipment, in particular to a step-by-step tobacco curing house and a continuous tobacco curing method. BACKGROUND

[0002] The current tobacco curing mostly uses bamboo poles and various types of tobacco clamps to hold tobacco leaves for curing, and various loose tobacco curing methods, all of which have high labor costs and high labor intensity, and the quality of some methods of tobacco curing is not up to standard, which cannot effectively solve the problem of mechanical curing of tobacco leaf clamps. With the aging of tobacco farmers, mechanization of tobacco curing is imperative to ensure the sustainable development of modern tobacco agriculture in China. Traditional tobacco curing houses are mostly single-chamber static curing, which requires transfer between each curing room. The problems of high energy consumption, process parameter adjustment lag, uneven quality of tobacco leaves, and large space occupation and high labor intensity cannot be ignored.

[0003] Curing facilities and equipment are important links related to the quality of cured tobacco. With the development of tobacco production in China, intensive curing has become the main form of tobacco processing and processing in China, and the advantages of intensive curing have become more and more obvious. However, some problems existing in intensive curing cannot be ignored, such as the inability of the curing area to adapt to the demand of existing large-scale development, and high labor intensity. At the same time, the existing curing houses, especially the civil curing houses, have large construction area and occupy a large amount of cultivated land resources. The construction of clusters often has limited land properties, affecting the sustainable development of tobacco areas. SUMMARY

[0004] In order to solve the technical problems in the background art, the present application provides a step-by-step tobacco curing house which can automatically and continuously cure tobacco leaves through digital control. The present application also discloses a step-by-step continuous tobacco curing method.

[0005] The step-by-step continuous tobacco curing method of the present application comprises the following steps: a. The lifting platform (4), the tobacco curing chamber (1), and the moisture recovery device (2) are arranged in sequence; The walking driving device (5) drives the tobacco hanging rack (3) to move between the tobacco curing chamber (1), the moisture recovery device (2), and the lifting platform (4); The tobacco leaves are loaded onto the tobacco hanging rack (3) through the front lifting platform (4); b. The walking driving device (5) drives the tobacco hanging rack (3) to enter the first tobacco curing chamber (1), and the tobacco curing chamber (1) has a plurality of chambers; then the tobacco hanging rack (3) sequentially passes through each tobacco curing chamber (1) and stays in each tobacco curing chamber (1) for a certain period of time; c. Each tobacco curing chamber (1) cures the tobacco leaves on the tobacco hanging rack (3) therein, and the tobacco curing chamber (1) is equipped with a temperature and humidity monitoring device; the process parameters in each tobacco curing chamber (1) are set separately; d. The walking drive device (5) drives the tobacco hanging rack (3) to move from the last tobacco curing chamber (1) to the rehumidification device (2); the rehumidification device (2) is equipped with a temperature and humidity monitoring device; e. The rehumidification device (2) performs a rehumidification operation on the tobacco leaves on the tobacco rack (3); f. The walking drive device (5) drives the tobacco rack (3) to move to the lifting platform (4) and removes the tobacco leaves from the tobacco rack (3); The temperature and humidity monitoring device includes: The first connecting column (61) is rotatably mounted on the top of the room (64); The second connecting column (62) is rotatably mounted on the top of the cigarette rack (3), which is rotatable relative to the room. (64) Horizontal movement; The first connecting pivot (61) includes a first column (612), on which a horizontally oriented... First plug (614); The second connecting pivot (62) includes a second pivot (621), on which a connector that can be inserted into the first pivot is provided. The second plug (623) is connected to the head (614); The first column (612) has a main positioning groove (613), and the second column (621) has a main positioning protrusion. The main positioning protrusion (622) can be inserted into the main positioning groove (613); Auxiliary positioning grooves (615) are provided on both sides of the main positioning groove (613), and auxiliary positioning grooves (615) are provided on both sides of the main positioning protrusion (622). It has an auxiliary positioning protrusion (624) that can be inserted into the auxiliary positioning groove (615). The rehumidification device includes a rehumidification chamber 21 for tobacco leaf rehumidification, and a rehumidification cavity 22 is installed on one side of the rehumidification chamber 21. A first rehumidification air vent 221 communicating with the rehumidification chamber 21 is opened at the upper end of the rehumidification cavity 22, and a second rehumidification air vent 222 communicating with the rehumidification chamber 21 is opened at the lower end of the rehumidification cavity 22. Air from the rehumidification chamber 21 enters the rehumidification cavity 22 through the second rehumidification air vent 222. The rehumidification chamber 22 is also equipped with a heating device that can heat the air flowing through it. The rehumidification chamber 22 is also equipped with a spray device 23 connected to the water mist generator 24. The spray device 23 is located between the first rehumidification air inlet 221 and the second rehumidification air inlet 222. The spray device 23 can humidify the air flowing through it.

[0006] The spray device 23 is retractable. The specific structure includes a push-pull frame 231, which is retractable and installed on the rehumidification chamber 22. Several spray pipes 232 are installed inside the push-pull frame 231, and the spray pipes 232 are connected to each other through a flow channel 233. The outer periphery of the spray pipes 232 is provided with spray holes for spraying water mist.

[0007] This invention also discloses a step-type tobacco curing barn, comprising: Lifting platform, tobacco curing chamber, and rehumidification device; The walking drive unit drives the tobacco hanging rack to move between the tobacco curing chamber, the rehumidification device, and the lifting platform.

[0008] Furthermore, the lifting platform, the tobacco curing chamber, and the rehumidification device are arranged in sequence, and there are several tobacco curing chambers.

[0009] Furthermore, temperature and humidity monitoring devices are installed in the tobacco curing chamber and the rehumidification device.

[0010] Furthermore, the tobacco curing chamber includes: A tobacco curing barn, with a curing chamber installed on one side; The hot air blower has its air outlet connected to the tobacco curing chamber. The fan is located at the top of the tobacco curing chamber; The flue gas inlet is located at the lower end of the flue gas chamber; A condenser is installed inside the tobacco curing chamber; The bottom of the tobacco curing barn is equipped with a dehumidification channel, and the outer end of the dehumidification channel is equipped with a dehumidification damper, which is located outside the tobacco curing barn; the bottom end of the dehumidification channel is equipped with a condensate drainage pipe, which is connected to the outside of the tobacco curing barn. The flue chamber is equipped with a fresh air damper, the opening of which is adjustable.

[0011] Furthermore, the rehumidification device includes: A rehumidification chamber, with a rehumidification cavity installed on one side; The upper end of the rehumidification chamber is provided with a first rehumidification air vent that communicates with the rehumidification room; A second re-humidification air vent, which communicates with the re-humidification chamber, is provided at the lower end of the re-humidification chamber; The rehumidification chamber is equipped with a spray device connected to a water mist generator, and the spray device is located between the first rehumidification air inlet and the second rehumidification air inlet. A weighing rail is installed at the bottom of the rehumidification chamber, and a weighing sensor is installed at the lower end of the weighing rail.

[0012] Further, the tobacco hanging frame comprises: a tobacco hanging frame; a moving wheel arranged at the bottom end of the tobacco hanging frame; a side plate arranged at the opposite sides of the tobacco hanging frame; The moving wheel comprises a wheel, and a horizontal shaft is arranged at one side of the wheel.

[0013] Further, the lifting platform comprises: a lifting table driven to lift by a lifting mechanism; The lifting table comprises a lifting frame, and an upper surface of the lifting frame is provided with an upper plane for loading tobacco leaves; The lifting mechanism comprises a plurality of rotatable lead screws, and the lifting table is in transmission connection with the lead screws; The lower end of the lifting frame is provided with an intermediate frame, a pressure sensor is arranged between the intermediate frame and the lifting frame, and the intermediate frame is in transmission connection with the lead screws.

[0014] Further, the walking driving device comprises: a pull rod pulled by a reciprocating driving mechanism; The pull rod comprises a rod body and a swing rod, and the swing rod is swingably arranged on the rod body; The reciprocating driving mechanism comprises a transmission chain, and first and second chain wheels are arranged at the two ends of the transmission chain, and one section of the transmission chain is fixedly connected with the rod body; The swing rod is provided with first and second rotating shafts, the first rotating shaft is located above the second rotating shaft, the first rotating shaft is in rotational connection with the rod body, and the second rotating shaft is connected with the rod body through a gas cylinder.

[0015] Further, the temperature and humidity monitoring device comprises: a first connecting rotating column rotatably arranged at the top of the room; A second connecting rotating column is rotatably arranged at the top of the tobacco hanging frame, and the tobacco hanging frame can move horizontally relative to the room; The first connecting rotating column comprises a first column body, and a first plug in the horizontal direction is arranged on the first column body; The second connecting rotating column comprises a second column body, and a second plug connectable with the first plug is arranged on the second column body; A main positioning groove is formed in the first column body, and a main positioning protrusion is formed in the second column body, and the main positioning protrusion can be inserted into the main positioning groove; Auxiliary positioning grooves are formed at the two sides of the main positioning groove, and auxiliary positioning protrusions are formed at the two sides of the main positioning protrusion, and the auxiliary positioning protrusions can be inserted into the auxiliary positioning grooves.

[0016] A control method of a step-by-step tobacco curing room comprises the following steps: a. loading tobacco leaves onto the tobacco hanging frame through the lifting platform at the front end; b. The walking driving device drives the tobacco hanger into the first tobacco curing chamber, and then passes through each tobacco curing chamber in turn, and the tobacco hanger stays in each tobacco curing chamber for a certain time; c. Each tobacco curing chamber cures the tobacco leaves on the tobacco hanger therein, and the process parameters in each tobacco curing chamber are set individually; d. The walking driving device drives the tobacco hanger to move from the last tobacco curing chamber to the moisture recovery device; e. The moisture recovery device performs moisture recovery operation on the tobacco leaves on the tobacco hanger; f. The walking driving device drives the tobacco hanger to move to the lifting platform, and the tobacco leaves on the tobacco hanger are removed.

[0017] Advantages of the present application: (1) The present application can continuously load and unload tobacco, effectively utilize space and time, save labor, and produce better quality tobacco.

[0018] (2) The present application has high heat utilization rate, simple structure, and does not have the problems of traditional tobacco curing room fire exposure, ash removal, etc.

[0019] (3) The heat supply circulating device of the present application is arranged at the top of the tobacco curing room, greatly saving the land occupation space of the tobacco curing room.

[0020] (4) Each area of the present application can be relatively independent, the curing conditions are easier to control, the condition control is more simple and convenient, and the risk of curing is reduced.

[0021] (5) The present application uses a conveying track for tobacco loading, tobacco conveying and tobacco unloading, greatly improving the efficiency of tobacco loading, reducing labor cost, and saving time and effort.

[0022] (6) Several different temperature section curing zones are designed to realize the same curing time, the same curing zone specification, time and space coordination, and continuous uninterrupted curing. Through optimizing the process, the curing capacity is improved, and through uninterrupted curing, the energy consumption cost of tobacco curing is reduced.

[0023] (7) The present application adopts multi-gear control of moisture removal door, medium-high humidity delay curing, and reverse negative pressure extraction technology, the structure of the cured tobacco leaves is softer, the chemical composition is more coordinated, and the aroma quality is good and sufficient.

[0024] (8) The present application uses linkage control to collect and analyze tobacco curing data in real time, realizes image recognition, real-time early warning, and precise adjustment of curing curve, and reduces the cost of fireman labor.

[0025] (9) The heat supply system of the present application uses a closed cycle air energy heat pump, heat can be fully recycled, green and low-carbon curing is realized, and the energy consumption cost of curing is reduced.

[0026] (10) Precise control of moisture regaining time, temperature and air volume, precise control of moisture regaining state through automatic weighing, reduced tobacco curing loss rate and increased income of tobacco farmers. BRIEF DESCRIPTION OF DRAWINGS

[0027] The application will be further described below in combination with the drawings and examples.

[0028] Figure 1 is a structural schematic diagram of the application; Figure 2 is a structural schematic diagram of the tobacco curing chamber; Figure 3 is a structural schematic diagram of the tobacco curing chamber from another direction; Figure 4 is a structural schematic diagram of the moisture regaining device; Figure 5 is a structural schematic diagram of the moisture regaining device from another direction; Figure 6 is a structural schematic diagram of the spraying device; Figure 7 is a structural schematic diagram of the tobacco hanging rack; Figure 8 is an exploded view of the tobacco hanging rack; Figure 9 is a structural schematic diagram of the tobacco hanging frame; Figure 10 is a structural schematic diagram of the moving wheel; Figure 11 is a structural schematic diagram of the lifting platform; Figure 12 is a structural schematic diagram of the lifting platform from another direction; Figure 13 is an exploded view of the lifting platform; Figure 14 is a structural schematic diagram of the walking driving device; Figure 15 is a structural schematic diagram of the walking driving device from another direction; Figure 16 is a structural schematic diagram of the pull rod; Figure 17 is an installation schematic diagram of the temperature and humidity monitoring device; Figure 18 is a structural schematic diagram of the first connecting rotating column; Figure 19 is a structural schematic diagram of the second connecting rotating column; Figure 20 is a working schematic diagram of the temperature and humidity monitoring device.

[0029] In the drawings: 1. tobacco curing chamber, 2. moisture regaining device, 3. tobacco hanging rack, 4. lifting platform, 5. walking driving device 11. Tobacco curing barn; 12. Tobacco curing chamber; 13. Dehumidification duct; 14. Condensate drain pipe; 15. Dehumidification damper; 16. Hot air blower; 17. Maintenance window; 18. Fresh air damper; 19. Tobacco curing door; 110. Fan; 111. Tobacco curing vent. 21. Rehumidification chamber; 22. Rehumidification cavity; 23. Spraying device; 24. Water mist generator; 25. Weighing rail 211. Sensor, 212. Backflow valve 221. First tidal bore, 222. Second tidal bore 231. Sliding frame, 232. Spray nozzle, 233. Flow channel, 234. Interface, 235. Handle 31. Cigarette holder; 32. Side panel; 33. Casters; 34. Side door. 311. First crossbeam, 312. Second crossbeam, 313. Third crossbeam 331. Wheel, 332. Horizontal axle 41. Lifting platform, 42. Middle frame, 43. Lifting mechanism 411. Lifting frame; 412. Top plane; 413. Vertical groove 421. Pressure sensor 431. Motor, 432. Steering box, 433. Drive shaft, 434. Lead screw, 435. Top frame 51. Track, 52. Tie rod, 53. Reciprocating drive mechanism 531. Drive motor, 532. First sprocket, 533. Transmission chain, 534. Second sprocket 521. Rod body, 522. Cylinder, 523. Rocker arm, 524. First pivot, 525. Second pivot, 526. Opening 61. First connecting column; 62. Second connecting column; 63. Detection probe; 64. Chamber. 611. Rotary column motor; 612. First column; 613. Main positioning slot; 614. First plug; 615. Auxiliary positioning slot 621. Second column, 622. Main positioning protrusion, 623. Second plug, 624. Auxiliary positioning protrusion. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] A walking-type tobacco curing barn includes: a lifting platform 4, a tobacco curing chamber 1, and a rehumidification device 2. A walking drive device 5 drives a tobacco hanging rack 3 to move between the tobacco curing chamber 1, the rehumidification device 2, and the lifting platform 4. The lifting platform 4, the tobacco curing chamber 1, and the rehumidification device 2 are arranged sequentially. The tobacco curing chamber 1 has several compartments, and temperature and humidity monitoring devices are installed in the tobacco curing chamber 1 and the rehumidification device 2.

[0032] The tobacco curing chamber 1 includes a curing room 11, with a curing cavity 12 installed on one side of the curing room 11. The outlet of the hot air blower 16 is connected to the curing cavity 12. A condenser is installed inside the curing cavity 12. A blower 110 is located at the upper part of the curing cavity 12, and a curing air vent 111 is located at the lower end of the curing cavity 12. Air in the curing room 11 is drawn into the curing cavity 12 by the blower 110 at the upper end. The condenser condenses and removes the water vapor in the air, and then the air is heated by the hot air blower 16 before re-entering the curing room 11 through the curing air vent 111 at the lower end. This achieves air circulation within the curing room 11.

[0033] A dehumidification channel 13 is provided at the bottom of the tobacco curing barn 11, and a condensate drain pipe 14 is provided at the bottom end of the dehumidification channel 13. The condensate drain pipe 14 is connected to the outside of the tobacco curing barn 11. A dehumidification damper 15 is provided at the outer end of the dehumidification channel 13, and the dehumidification damper 15 is located outside the tobacco curing barn 11. The moisture generated by the tobacco leaves can be discharged to the outside through the dehumidification channel 13 and the condensate drain pipe 14.

[0034] A fresh air damper 18 is installed on the tobacco curing chamber 12, and the opening degree of the fresh air damper 18 is adjustable. The fresh air damper 18 is linked with the dehumidification damper 15, which can precisely control the static pressure in the tobacco curing chamber 11.

[0035] For ease of operation, a tobacco curing door 19 is provided on one side of the tobacco curing chamber 11, and for ease of maintenance of the fan 110, a maintenance window 17 is provided on the tobacco curing chamber 12, which is located at the back of the fan 110.

[0036] The rehumidification device 2 includes a rehumidification chamber 21 for tobacco leaf rehumidification, and a rehumidification cavity 22 is installed on one side of the rehumidification chamber 21. A first rehumidification air vent 221 communicating with the rehumidification chamber 21 is opened at the upper end of the rehumidification cavity 22, and a second rehumidification air vent 222 communicating with the rehumidification chamber 21 is opened at the lower end of the rehumidification cavity 22. Air from the rehumidification chamber 21 enters the rehumidification cavity 22 through the second rehumidification air vent 222. A heating device is also installed in the rehumidification cavity 22 to heat the flowing air. A spraying device 23 connected to a water mist generator 24 is also installed in the rehumidification cavity 22. The spraying device 23 is located between the first and second rehumidification air vents 221 and 222, and it humidifies the flowing air.

[0037] For ease of maintenance, the spray device 23 is retractable. Its specific structure includes a push-pull frame 231, which is retractable and mounted on the rehumidification chamber 22. Several spray pipes 232 are disposed within the push-pull frame 231, and the spray pipes 232 are connected by flow channels 233. The outer periphery of each spray pipe 232 is provided with nozzles for spraying water mist.

[0038] An interface 234 is provided on the outside of the push-pull frame 231, which is connected to the flow channel 233. The water mist generator 24 is connected to the interface 234. For ease of operation, a handle 235 is provided on the outside of the push-pull frame 231.

[0039] To facilitate access to and observation of the rehumidification chamber 21, a rehumidification door 212 that can be opened and closed is provided on one side of the rehumidification chamber 21, and a transparent observation window is provided on the rehumidification door 212.

[0040] A weighing rail 25 is installed at the bottom of the rehumidification chamber 21, and a weighing sensor is installed at the lower end of the weighing rail 25. When the tobacco rack 3 moves onto the weighing rail 25 in the rehumidification chamber 21, the weighing sensor can measure the weight change of the tobacco rack 3, thereby determining the degree of rehumidification of the tobacco leaves.

[0041] In order to monitor the environmental parameters inside the rehumidification chamber 21, a temperature and humidity sensor 211 is installed inside the rehumidification chamber 21.

[0042] The cigarette holder 3 includes a cigarette frame 31, which is welded from square steel tubing. This material has high strength and rigidity, can bear a large weight, and is not easily deformed or damaged. At the same time, the shape of the square steel tubing makes the cigarette holder 3 more stable, ensuring the stability and safety of the tobacco.

[0043] The cigarette hanging frame 31 includes a horizontally arranged first crossbeam 311 and a third crossbeam 313, located on opposite sides of the frame. A horizontal second crossbeam 312 is also provided in the middle of the frame. The first, second, and third crossbeams 311, 312, and 313 are all of equal height. This design provides sufficient support strength to ensure stable tobacco hanging. Tobacco clips for hanging tobacco leaves can be installed between the first, second, and third crossbeams 311, 312, and 313. The first, second, and third crossbeams 311, 312, and 313 at different heights can also be used to hang tobacco of different lengths.

[0044] A movable wheel 33 is located at the bottom of the cigarette holder 31. The movable wheel 33 includes a wheel 331, and a horizontal axle 332 is provided on one side of the wheel 331. The cigarette holder 3 can be moved by pulling the horizontal axle 332. This design allows the cigarette holder 3 to be moved easily.

[0045] Side panels 32 are located on opposite sides of the cigarette rack 31. The side panels 32 serve as an isolation layer, ensuring relative environmental isolation between adjacent cigarette racks 3. This allows the cigarette rack 3 to have independent environmental conditions.

[0046] One side of the cigarette rack 31 is equipped with an openable and closable side door 34, which allows staff to easily hang, retrieve, and adjust tobacco.

[0047] The bottom of the cigarette holder 31 is equipped with a removable mesh bag. This design allows staff to easily clean and replace it. When the mesh bag needs cleaning or replacement, it can be easily removed for washing or replacement. At the same time, the mesh bag design effectively prevents tobacco from slipping off.

[0048] A temperature and humidity sensor is installed on the cigarette hanging frame 31. This design allows staff to monitor the temperature and humidity of the tobacco on the cigarette hanging rack 3 in real time. The temperature and humidity sensor provides timely feedback; when the temperature or humidity of the tobacco exceeds the set range, the sensor will issue an alarm to remind staff to make adjustments. This design helps to ensure the quality of the tobacco. At the same time, the temperature and humidity sensor also helps staff better understand and control the tobacco storage environment, thereby better ensuring the quality of the tobacco.

[0049] The lifting platform 4 includes a liftable lifting platform 41, which is driven to rise and fall by a lifting mechanism 43. A vertical slot 413 is provided on the lifting platform 41. The frame of the tobacco rack 3 can be embedded in the vertical slot 413, allowing the lifting platform 41 to extend into the interior of the tobacco rack 3. This design facilitates workers loading and unloading tobacco leaves into and from the tobacco rack 3.

[0050] The lifting platform 41 includes a lifting frame 411, which is welded from square steel tubing. It possesses high strength and rigidity, capable of bearing significant weight, and is not easily deformed or damaged. The upper surface of the lifting frame 411 is provided with an upper plane 412, which is used to load tobacco leaves. The upper plane 412 can carry the tobacco leaves into the interior of the tobacco hanging rack 3.

[0051] The lifting mechanism 43 includes several rotatable lead screws 434, and the lifting platform 41 is drivenly connected to the lead screws 434. A steering box 432 is provided at the lower end of each lead screw 434, and the steering boxes 432 are drivenly connected to each other via a drive shaft 433. The motor 431 drives the several lead screws 434 to rotate synchronously via the drive shaft 433 and the steering box 432. The rotation of the lead screws 434 drives the lifting platform 41 to perform lifting movements.

[0052] To make the lead screw 434 more stable, a top frame 435 is provided at the upper end of the lead screw 434, and the lead screw 434 is rotatably connected to the top frame 435.

[0053] A middle frame 42 is provided at the lower end of the lifting frame 411. A pressure sensor 421 is installed between the middle frame 42 and the lifting frame 411. The middle frame 42 is connected to the lead screw 434 for transmission. The pressure sensor 421 enables the lifting mechanism 43 to have a weighing function. It can monitor the weight of the tobacco leaves in real time. When the weight exceeds the set range, the sensor will issue an alarm to remind the staff to make adjustments.

[0054] The walking drive device 5 includes two parallel pull rods 52, which are pulled by a reciprocating drive mechanism 53. A track 51 is provided on one side of the pull rods 52, and the track 51 is parallel to the pull rods 52. The pull rods 52 can drive the cigarette holder 3 to move intermittently in a stepping manner along the track 51.

[0055] The reciprocating drive mechanism 53 includes a transmission chain 533, with a first sprocket 532 and a second sprocket 534 at both ends. One end of the transmission chain 533 is fixedly connected to the rod 521, and the transmission chain 533 can drive the rod 521 to move. The first sprocket 532 is driven by a travel drive motor 531. The travel drive motor 531 drives the transmission chain 533 to rotate through the first sprocket 532.

[0056] The pull rod 52 includes a rod body 521 and a swing rod 523. The swing rod 523 is oscillatingly mounted on the rod body 521 and can swing out to the outside of the rod body 521. The swing rod 523 has a first rotating shaft 524 and a second rotating shaft 525. The first rotating shaft 524 is located above the second rotating shaft 525 and is rotatably connected to the rod body 521. The second rotating shaft 525 and the rod body 521 are connected by a cylinder 522. The rod body 521 has a hollow structure, and the swing rod 523 and the cylinder 522 are installed inside the rod body 521. An opening 526 is provided at the upper end of the rod body 521. The swinging end of the swing rod 523 can swing to the outside of the opening 526 and press against the side edge of the opening 526. When the cylinder 522 extends, the swing rod 523 swings downwards into the interior of the rod body 521, and the swing rod 523 disengages from the cigarette holder 3. When cylinder 522 shortens, swing rod 523 swings upward to the outside of rod body 521, and the swing end of swing rod 523 presses against the side edge of opening 526. Pull rod 52 drags horizontal shaft 332 through swing rod 523, causing cigarette rack 3 to move. The side edge of opening 526 further reinforces and supports swing rod 523, making swing rod 523 more stable when dragging cigarette rack 3.

[0057] The temperature and humidity monitoring device includes a first connecting column 61 rotatably mounted on the top of room 64 and a second connecting column 62 rotatably mounted on the top of the cigarette rack 3. The cigarette rack 3 can move horizontally relative to room 64. The first connecting column 61 and the second connecting column 62 can be electrically connected, thereby enabling the temperature and humidity sensor on the cigarette rack 3 to connect to the outside environment. The temperature and humidity sensor on the cigarette rack 3 includes several detection probes 63 located at different positions on the cigarette rack 3, and the detection probes 63 are electrically connected to a second plug 623.

[0058] The first connecting rotating column 61 includes a first column 612, which is driven to rotate by a rotating column motor 611 located at the top of the room 64. A horizontal first plug 614 is mounted on the first column 612. The second connecting rotating column 62 includes a second column 621, which has a second plug 623 that can connect to the first plug 614. A torsion spring is installed between the second column 621 and the cigarette rack 3 to allow the second column 621 to return to its original position. When the first plug 614 and the second plug 623 are connected, the temperature and humidity sensor on the cigarette rack 3 is activated.

[0059] The first column 612 has a main positioning groove 613, and the second column 621 has a main positioning protrusion 622, which can be inserted into the main positioning groove 613. Both the main positioning groove 613 and the main positioning protrusion 622 are horizontal trapezoidal. The first plug 614 is located at the bottom of the main positioning groove 613, and the second plug 623 is located at the top of the main positioning protrusion 622. Through this structure, the first plug 614 and the second plug 623 can be horizontally aligned.

[0060] The main positioning groove 613 has auxiliary positioning grooves 615 on both sides, and the main positioning protrusion 622 has auxiliary positioning protrusions 624 on both sides that can be inserted into the auxiliary positioning grooves 615. The auxiliary positioning grooves 615 and auxiliary positioning protrusions 624 are trapezoidal in the vertical direction. With the above structure, the first plug 614 and the second plug 623 can be aligned in the vertical direction.

[0061] In actual operation, when the smoke rack 3 enters the room 64, the main positioning protrusion 622 aligns and inserts into the main positioning groove 613, thus activating the temperature and humidity sensor. When the smoke rack 3 leaves the room 64, the first connecting column 61 and the second connecting column 62 rotate 180 degrees first, and then the smoke rack 3 moves, causing the main positioning protrusion 622 to disengage from the main positioning groove 613.

[0062] A method for controlling a step-type tobacco curing barn includes the following steps: a. The tobacco leaves are loaded onto the tobacco rack 3 via the lifting platform 4 at the front end; b. The walking drive device 5 drives the tobacco hanging rack 3 into the first tobacco curing chamber 1, and then passes through each tobacco curing chamber 1 in turn. The tobacco hanging rack 3 stays in each tobacco curing chamber 1 for a certain period of time. c. Each tobacco curing chamber 1 cures the tobacco leaves on the tobacco hanging rack 3 therein, and the process parameters for each tobacco curing chamber 1 are set separately; d. The walking drive device 5 drives the tobacco hanging rack 3 to move from the last tobacco curing chamber 1 to the rehumidification device 2; e. The rehumidification device 2 rehumidifies the tobacco leaves on the tobacco rack 3; f. The walking drive device 5 drives the tobacco rack 3 to move to the lifting platform 4 and removes the tobacco leaves from the tobacco rack 3.

Claims

1. A method for continuous curing of tobacco leaves in a step-by-step manner: characterized in that: The lifting platform (4), the tobacco curing chamber (1), and the rehumidification device (2) are arranged in sequence; The walking drive device (5) drives the tobacco rack (3) to move between the tobacco curing chamber (1), the rehumidification device (2) and the lifting platform (4); The tobacco leaves are loaded onto the tobacco rack (3) via the lifting platform (4) at the front end; b. The walking drive device (5) drives the tobacco rack (3) into the first tobacco curing chamber (1), which has several chambers; then it passes through each tobacco curing chamber (1) in sequence, and the tobacco rack (3) stays in each tobacco curing chamber (1) for a certain period of time; c. Each tobacco curing chamber (1) cures the tobacco leaves on the tobacco hanging rack (3) therein, and the tobacco curing chamber (1) is equipped with a temperature and humidity monitoring device; the process parameters of each tobacco curing chamber (1) are set separately; d. The walking drive device (5) drives the tobacco rack (3) to move from the last tobacco curing chamber (1) to the rehumidification device (2); The rehumidification device (2) is equipped with a temperature and humidity monitoring device; e. The rehumidification device (2) performs a rehumidification operation on the tobacco leaves on the tobacco rack (3); f. The walking drive device (5) drives the tobacco rack (3) to move to the lifting platform (4) and removes the tobacco leaves from the tobacco rack (3); The temperature and humidity monitoring device includes: The first connecting column (61) is rotatably mounted on the top of the room (64); The second connecting column (62) is rotatably mounted on the top of the cigarette rack (3), which is rotatable relative to the room. (64) Horizontal movement; The first connecting pivot (61) includes a first column (612), on which a horizontally oriented... First plug (614); The second connecting pivot (62) includes a second pivot (621), on which a connector that can be inserted into the first pivot is provided. The second plug (623) is connected to the head (614); The first column (612) has a main positioning groove (613), and the second column (621) has a main positioning protrusion. The main positioning protrusion (622) can be inserted into the main positioning groove (613); Auxiliary positioning grooves (615) are provided on both sides of the main positioning groove (613), and auxiliary positioning grooves (615) are provided on both sides of the main positioning protrusion (622). It has an auxiliary positioning protrusion (624) that can be inserted into the auxiliary positioning groove (615).

2. The method for continuous curing of tobacco leaves by stepping process according to claim 1, characterized in that, The rehumidification device includes a rehumidification chamber 21 for tobacco leaf rehumidification, and a rehumidification cavity 22 is installed on one side of the rehumidification chamber 21. A first rehumidification air vent 221 communicating with the rehumidification chamber 21 is opened at the upper end of the rehumidification cavity 22, and a second rehumidification air vent 222 communicating with the rehumidification chamber 21 is opened at the lower end of the rehumidification cavity 22. Air from the rehumidification chamber 21 enters the rehumidification cavity 22 through the second rehumidification air vent 222.

3. The method for continuous curing of tobacco leaves by stepping process according to claim 2, characterized in that, The rehumidification chamber 22 is also equipped with a heating device that can heat the air flowing through it. The rehumidification chamber 22 is also equipped with a spray device 23 connected to the water mist generator 24. The spray device 23 is located between the first rehumidification air inlet 221 and the second rehumidification air inlet 222. The spray device 23 can humidify the air flowing through it.

4. The method for continuous curing of tobacco leaves by stepping process according to claim 3, characterized in that, The spray device 23 is retractable. The specific structure includes a push-pull frame 231, which is retractable and installed on the rehumidification chamber 22. Several spray pipes 232 are installed inside the push-pull frame 231, and the spray pipes 232 are connected to each other through a flow channel 233. The outer periphery of the spray pipes 232 is provided with spray holes for spraying water mist.

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