Tobacco leaf baking equipment and baking method for optimizing baking environment by using foreign aid additives

Abstract

The invention discloses tobacco leaf baking equipment and a baking method for optimizing a baking environment by utilizing foreign aid additives, and relates to the field of tobacco leaf baking, the tobacco leaf baking equipment comprises a baking box, the baking box comprises a tobacco loading chamber and a heating chamber which are separated from each other, hot air for baking tobacco leaves circularly flows in the heating chamber and the tobacco loading chamber, and the tobacco leaf baking equipment further comprises an aerosol generator, the aerosol generator is installed in the baking oven and used for dispersing external aid adding agents into the hot air flowing circularly. The airflow generated by the fan assembly carries the dispersed medicament to enter the tobacco loading chamber to be in contact with and attached to the tobacco leaves, the external aid medicament is adaptively added according to the temperature change in the tobacco loading chamber in the tobacco leaf drying process, the tobacco leaf curing quality is effectively improved, and meanwhile the tobacco leaf curing cost can be greatly reduced.

Description

Technical Field

[0001] The present invention relates to the field of using external additives to optimize the baking environment for tobacco leaf baking equipment and baking methods. Background Art

[0002] The bulk curing barn is a place for tobacco leaf modulation. Whether its structure is reasonable directly affects the baking quality of tobacco leaves. In the past hundred years, in order to improve the baking performance of the bulk curing barn, many scholars have carried out a series of studies on aspects such as heating equipment, precise control of circulating fans, loading equipment, flue-cured tobacco controllers, and wall structures, continuously promoting the modern bulk curing barn to develop in the direction of optimized baking environment, low-carbon baking, labor reduction and cost reduction, and precise control.

[0003] Traditionally, before loading tobacco leaves into the bulk curing barn, tobacco farmers need to use antiviral agents or hormonal substances on tobacco leaves carrying viruses or with low maturity, and manually spray them using traditional medicine cartridges before hanging the tobacco leaves into the loading chamber for baking.

[0004] In view of the above related technologies, this method of applying external agents in the prior art will evaporate due to the exchange of indoor and outdoor air at high temperatures during the baking of tobacco leaves, affecting the efficacy of the agents. Moreover, in the context of the increasing labor cost, it is no longer suitable for the development model of modern tobacco agriculture. To sum up, the existing tobacco leaf baking equipment has poor baking quality for tobacco leaves. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a tobacco leaf baking equipment and baking method that use external additives to optimize the baking environment, so as to solve the technical problem that the existing tobacco leaf baking equipment has poor baking quality for tobacco leaves.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A tobacco leaf baking equipment that uses external additives to optimize the baking environment, including a baking oven. The baking oven includes a loading chamber and a heating chamber that are separated from each other. Hot air for baking tobacco leaves circulates between the heating chamber and the loading chamber. It also includes an aerosol generator installed in the baking oven, and the aerosol generator is used to disperse external additive agents into the circulating hot air.

[0007] By adopting the above technical solution, the airflow generated by the fan assembly carries the dispersed agents into the loading chamber to contact and adhere to the leaves of the tobacco leaves. During the process of drying the tobacco leaves, external agents are added adaptively according to the temperature change in the loading chamber, effectively improving the baking quality of the tobacco leaves and also being able to significantly reduce the cost of tobacco leaf baking.

[0008] The present invention is further configured as follows: a first heat insulation board and a second heat insulation board are spaced apart in the length direction in the baking oven, the smoke loading chamber is located on one side of the first heat insulation board, the heating chamber is located between the first heat insulation board and the second heat insulation board, the aerosol generator is installed on a side of the second heat insulation board away from the smoke loading chamber, an air outlet channel is provided at the top end of the first heat insulation board, and an air inlet channel is provided at the bottom end.

[0009] Preferably, air circulates through the air outlet channel and the air inlet channel at the top and bottom of the first heat insulation board, and is heated when passing through the heating chamber, and dries the tobacco leaves when entering the tobacco loading chamber.

[0010] The present invention is further configured such that the aerosol generator is controlled by a flue-cured tobacco control device installed in the baking oven, and the output end of the aerosol is connected to a conduit, which extends to the middle of the air outlet channel and is connected to a dispersion pipe.

[0011] Preferably, the duct guides the foreign aid aerosol to the air outlet channel, and the airflow generated by the fan further disperses the foreign aid aerosol sprayed from the dispersion pipe into the hot air flow, and is evenly dispersed on the tobacco leaves as the hot air circulates.

[0012] The present invention is further configured such that an air guide frame is fixedly installed on the bottom surface of the smoke loading chamber, air guide plates are installed at intervals in the air guide frame, one end of the air guide plate close to the air inlet channel is bent downward, and one end of the air guide frame close to the air inlet channel is connected to the heating chamber.

[0013] Preferably, the downwardly flowing air is allowed to evenly enter the lower part of the air guide frame, and after flowing along the length direction of the air guide frame, passes through the air inlet channel and enters the heating chamber, thereby effectively improving the uniformity of the air flow in the smoke loading chamber.

[0014] The present invention is further configured such that a filter plate for blocking tobacco leaf debris is installed at the air inlet channel of the first heat insulation board, a movable platform capable of reciprocating along the length direction is installed in the air guide frame, a scraper for scraping off tobacco leaf debris is fixedly connected to the bottom end of the movable platform, and a collection trough for collecting tobacco leaf debris is provided at both ends of the scraper movement trajectory of the baking oven, and both ends of the collection trough are connected to a cover plate.

[0015] Preferably, the reciprocating movement of the mobile platform is used to collect tobacco leaf debris dropped during the tobacco leaf baking process into collection grooves at both ends of the baking box.

[0016] The present invention is further configured such that the air deflector is rotatably connected to the air guiding frame, and the position of the rotating shaft is in the direction away from the air inlet passage. The air guiding frame is provided with a sliding groove extending in the direction away from the air inlet passage at the bottom end of the bent portion of each air deflector. A support rod is slidably connected in the sliding groove. A groove for cooperating with the support rod is provided at the bottom end of the bent portion of the air deflector. A first spring in a compressed state is provided between the support rod and the inner wall of the sliding groove. The first spring in the sliding groove is used to push the support rod to slide in the direction of the air inlet passage. The top surface of the moving table is connected with a telescopic head capable of vertical telescoping. The telescopic head is used to push the support rod to slide in the direction away from the air inlet passage.

[0017] Preferably, when the moving table passes below the air deflector, the air deflector can be rotated downward to pour the tobacco leaf debris on the surface, further improving the collection ability of the tobacco leaf debris, and thus improving the economic benefits of tobacco leaf baking.

[0018] The present invention is further configured such that the telescopic head is slidably connected in a telescopic groove in the moving table. A second spring is provided between the bottom end of the telescopic head and the inner wall of the telescopic groove. When the second spring is not compressed, the top end of the telescopic head is higher than the bottom surface of the support rod. After the second spring is compressed, the top end of the telescopic head can be flush with the bottom surface of the support rod.

[0019] Preferably, when the telescopic head passes through the support rod, it pushes the telescopic rod, thereby causing the air deflector to complete one rotation.

[0020] A tobacco leaf baking method using external additives to optimize the baking environment, the process of which includes the following steps:

[0021] Step 1: Select tobacco leaves with medium field nutrition and consistent growth as the baking raw materials. Braid the tobacco leaves and sort them according to the local production tobacco clips. The loading capacity is twenty clips.

[0022] Step 2: After the tobacco leaf baking starts, after the flue-cured tobacco controller detects the actual dry bulb temperature value through the temperature and humidity sensors installed in the loading chamber, it identifies and judges the baking state of the tobacco leaves, and at the same time starts the aerosol generator of the external aid device. The aerosol generator provides the external aid aerosol to the loading chamber at a gear adapted to the actual dry bulb temperature value.

[0023] The present invention is further configured such that the actual dry bulb temperature value detected by the temperature and humidity sensors in Step 2 is t. The working gears of the aerosol generator include En1, En2, and En3. When t ≤ 36°C or t > 47°C, the aerosol generator does not work. When 36°C < t ≤ 39°C, the aerosol generator works at the En1 gear. When 39°C < t ≤ 42°C, the aerosol generator works at the En2 gear. When 42°C < t ≤ 47°C, the aerosol generator works at the En3 gear.

[0024] Preferably, select an appropriate working gear of the aerosol generator according to different temperatures in the tobacco loading chamber 2.

[0025] The present invention is further configured such that the working state corresponding to the working gear En1 of the aerosol generator is to work for 1 hour every 3 - 6 hours, the working state corresponding to the working gear En2 is to work for 1 hour every 6 - 12 hours, and the working state corresponding to the working gear En3 is to work for 1 hour every 12 - 24 hours.

[0026] Preferably, use the working states of different aerosol generators to adaptively add aerosols of outer edge additives into the tobacco loading chamber 2.

[0027] In summary, the present invention mainly has the following beneficial effects:

[0028] 1. The present invention disperses the external aid additive agent into the air through the aerosol generator, and uses the airflow generated by the fan assembly to carry the dispersed agent into the tobacco loading chamber to contact and adhere to the leaves of the tobacco leaves. During the process of drying the tobacco leaves, the external aid agent is adaptively added according to the temperature change in the tobacco loading chamber, effectively improving the baking quality of the tobacco leaves and significantly reducing the cost of tobacco leaf baking.

[0029] 2. The present invention sets a wind guiding frame at the bottom of the tobacco loading chamber, and uses the wind guiding plates arranged at intervals on the wind guiding frame to adjust the air outlet speed at various positions in the tobacco loading chamber, avoiding the situation where the gas flow rate near the air outlet is much higher than that far from the air outlet. Thus, the air carrying the aerosol of the external aid can more evenly contact the tobacco leaves at various positions in the tobacco loading chamber, further improving the baking quality of the tobacco leaves.

[0030] 3. The present invention sets a moving table that moves along the length direction of the tobacco loading chamber below the wind guiding frame, and installs a scraping blade at the bottom of the moving table. The reciprocating movement of the moving table is used to collect the debris generated during the drying process of the tobacco leaves. At the same time, a filter plate is set at the air inlet channel of the heating chamber, effectively preventing the debris generated during the drying process of the tobacco leaves from circulating in the tobacco loading chamber and the heating chamber and affecting the dispersion effect of the aerosol of the external aid.

[0031] 4. The present invention rotatably connects the wind guiding plates to the inside of the wind guiding frame, and slidably arranges support rods at the bottom ends of the wind guiding plates corresponding to each wind guiding plate. The support rods are used to support the wind guiding plates through the clamping connection with the bottom ends of the wind guiding plates. During the cyclic movement of the moving table, the wind guiding plates can pour down the tobacco leaf debris on the surface, preventing the debris from falling on the ground of the tobacco loading chamber, further improving the collection effect of the tobacco leaf debris, and thus enhancing the economic benefits of tobacco leaf baking. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a perspective view of the present invention;

[0033] Figure 2 Isometric view of the door removal state of the present invention;

[0034] Figure 3 Isometric view of the door removal state of the present invention from another perspective;

[0035] Figure 4 Isometric view of the internal structure of the present invention;

[0036] Figure 5 For the present invention Figure 4 Enlarged view of A;

[0037] Figure 6 Isometric view of the internal structure of the present invention from another perspective;

[0038] Figure 7 Front view of the internal structure of the air guide frame of the present invention;

[0039] Figure 8 For the present invention Figure 7 Enlarged view of B;

[0040] Figure 9 Isometric view of the cooperation state of the air guide frame and the moving table of the present invention;

[0041] Figure 10 During the drying process of the present invention, when the actual dry-bulb temperature inside the tobacco loading chamber is 36°C < t ≤ 39°C, schematic diagram of the working gear of the aerosol generator;

[0042] Figure 11 Curve graph of the change in the microbial content on tobacco leaves during baking in the comparative example of the present invention.

[0043] Explanation of reference numerals:

[0044] 1. Baking oven; 101. Door; 102. Collection trough; 103. Cover plate; 2. Tobacco loading chamber; 3. Heating chamber; 4. First heat insulation board; 401. Air outlet channel; 402. Air inlet channel; 5. Second heat insulation board; 501. Air guide arc surface; 6. Heating furnace; 7. Fan assembly; 8. Aerosol generator; 801. Duct; 802. Dispersion tube; 9. Flue-cured tobacco controller; 10. Air guide frame; 1001. Slide groove; 1002. First spring; 11. Moving table; 1101. Telescopic groove; 1102. Second spring; 12. Scraping blade; 13. Telescopic head; 14. Air guide plate; 15. Support rod; 16. Filter plate. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0046] The embodiments of the present invention will be described below according to its overall structure.

[0047] The first embodiment:

[0048] For a tobacco leaf baking device that optimizes the baking environment using external additives, please refer to Figures 1 - 10 , which includes a baking oven 1. Both ends of the baking oven 1 are connected with a box door 101. Specifically, in this embodiment, the box body of the baking oven 1 adopts a dense oven with a structure size ratio of 20:1 to that of the standard dense tobacco barn in our country. The baking oven 1 includes a separately arranged tobacco loading chamber 2 and a heating chamber 3. Hot air for baking tobacco leaves circulates in the heating chamber 3 and the tobacco loading chamber 2. The circulating hot air is mainly realized by the fan assembly 7 and the heating furnace 6 in the heating chamber 3.

[0049] It further includes an aerosol generator 8, which is installed in the baking oven 1. Specifically, the aerosol generator 8 is a mature small aerosol generating device in the prior art. The specific working principle of it will not be elaborated in this application. The aerosol generator 8 is used to disperse the external additive agent into the circulating hot air.

[0050] In the above embodiment, specifically, please refer to Figures 2 - 6 again. Along the length direction of the baking oven 1, a first heat insulation board 4 and a second heat insulation board 5 are arranged at intervals. The tobacco loading chamber 2 is located on one side of the first heat insulation board 4, the heating chamber 3 is located between the first heat insulation board 4 and the second heat insulation board 5, and the aerosol generator 8 is installed on the side of the second heat insulation board 5 away from the tobacco loading chamber 2. An air outlet channel 401 is arranged at the top end of the first heat insulation board 4, and an air inlet channel 402 is arranged at the bottom end. Air circulates through the air outlet channel 401 and the air inlet channel 402 at the top and bottom ends of the first heat insulation board 4, heats up when passing through the heating chamber 3, and dries the tobacco leaves when entering the tobacco loading chamber 2.

[0051] Specifically, a heating furnace 6 is installed in the heating chamber 3, and a fan assembly 7 with an upward blowing direction is installed above the heating furnace 6. In order to make the airflow generated by the fan assembly 7 flow better towards the air outlet channel 401, an arc-shaped air guiding arc surface 501 is arranged at the bottom end of the second heat insulation board 5. After the fan assembly 7 works to make the airflow pass through the air outlet channel 401 and enter the tobacco loading chamber 2, it then returns to the heating chamber 3 through the air inlet channel 402, thus realizing the circulation of hot air.

[0052] Further, the aerosol generator 8 is controlled by a flue-cured tobacco controller 9 installed in the baking oven 1, and a conduit 801 is connected to the output end of the aerosol. Specifically, the flue-cured tobacco controller 9 can control the operation of the aerosol generator 8 at regular intervals and control the working time of the aerosol generator 8 for a single operation. The conduit 801 extends to the middle of the air outlet passage 401 and is connected to a dispersion tube 802. Specifically, two rows of nozzles are arranged at intervals along the axial direction at the top of the dispersion tube 802. The nozzles are respectively arranged obliquely upward or downward and face away from the second heat insulation plate 5, so that the aerosol of the external additive can be more evenly dispersed into the air flow entering the tobacco loading chamber 2. The conduit 801 guides the external additive aerosol to the air outlet passage 401, and the air flow generated by the fan further disperses the external additive aerosol ejected from the dispersion tube 802 into the hot air flow, and is evenly dispersed onto the leaves of the tobacco leaves along with the hot air circulation.

[0053] A method for baking tobacco leaves by optimizing the baking environment with external additives, the process of which includes the following steps:

[0054] Step 1: Select tobacco leaves with medium field nutrition and consistent growth as baking raw materials. Braid the tobacco and sort it according to the local production tobacco clips. The loading capacity is twenty clips.

[0055] Step 2: After the tobacco leaf baking starts, after the flue-cured tobacco controller detects the actual dry bulb temperature value through the temperature and humidity sensor installed in the tobacco loading chamber, it identifies and judges the baking state of the tobacco leaves, and at the same time starts the aerosol generator of the external additive device. The aerosol generator provides the aerosol of the external additive to the tobacco loading chamber at a gear suitable for the actual dry bulb temperature value.

[0056] Specifically, the actual dry bulb temperature value detected by the temperature and humidity sensor is t. The working gears of the aerosol generator include En1, En2, and En3. When t ≤ 36°C or t > 47°C, the aerosol generator does not work. When 36°C < t ≤ 39°C, the aerosol generator works at the En1 gear. When 39°C < t ≤ 42°C, the aerosol generator works at the En2 gear. When 42°C < t ≤ 47°C, the aerosol generator works at the En3 gear. Select a suitable working gear of the aerosol generator according to different temperatures in the tobacco loading chamber 2.

[0057] Further, the working state corresponding to the working gear En1 of the aerosol generator is to work for 1 hour every 6 hours, the working state corresponding to the working gear En2 is to work for 1 hour every 12 hours, and the working state corresponding to the working gear En3 is to work for 1 hour every 24 hours. The aerosol of the external additive is adaptively added to the tobacco loading chamber 2 by using the working states of different aerosol generators.

[0058] The second embodiment:

[0059] A tobacco leaf baking device for optimizing the baking environment with external additives, please refer toFigures 1 - 10 , based on the first embodiment, the difference from the first embodiment is that a wind guide frame 10 is fixedly installed on the bottom surface inside the tobacco loading chamber 2, and wind guide plates 14 are installed at intervals inside the wind guide frame 10. The distance between the wind guide plates 14 is less than the width of an adult's foot sole, so as to prevent the staff's foot sole from getting stuck between the two wind guide plates 14 when entering the tobacco loading chamber 2.

[0060] Furthermore, one end of the wind guide plate 14 close to the air inlet passage 402 is bent downward, and one end of the wind guide frame 10 close to the air inlet passage 402 is communicated with the heating chamber 3, so that the downward flowing air uniformly enters below the wind guide frame 10 and flows along the length direction of the wind guide frame 10 and then passes through the air inlet passage 402 into the heating chamber 3, effectively improving the uniformity of air flow in the tobacco loading chamber.

[0061] A tobacco leaf baking method for optimizing the baking environment by using external aids, the process of which includes the following steps:

[0062] Step 1: Select tobacco leaves with medium field nutrition and consistent growth as baking raw materials. Braid the tobacco leaves and sort them according to the local production tobacco clips, and the tobacco loading capacity is twenty clips;

[0063] Step 2: After the tobacco leaf baking starts, after the flue-cured tobacco controller detects the actual dry bulb temperature value through the temperature and humidity sensor installed in the tobacco loading chamber, it identifies and judges the baking state of the tobacco leaves, and at the same time starts the aerosol generator of the external aid device. The aerosol generator provides an external aerosol of the external aid to the tobacco loading chamber at a gear adapted to the actual dry bulb temperature value.

[0064] Specifically, the actual dry bulb temperature value detected by the temperature and humidity sensor is t. The working gears of the aerosol generator include En1, En2, and En3. When t ≤ 36°C or t > 47°C, the aerosol generator does not work. When 36°C < t ≤ 39°C, the aerosol generator works in the En1 gear. When 39°C < t ≤ 42°C, the aerosol generator works in the En2 gear. When 42°C < t ≤ 47°C, the aerosol generator works in the En3 gear. Select a suitable working gear of the aerosol generator according to different temperatures inside the tobacco loading chamber 2.

[0065] Furthermore, the working state corresponding to the working gear En1 of the aerosol generator is to work for 1 hour every 3 hours, the working state corresponding to the working gear En2 is to work for 1 hour every 6 hours, and the working state corresponding to the working gear En3 is to work for 1 hour every 12 hours. Use the working states of different aerosol generators to adaptively add the aerosol of the external addition to the tobacco loading chamber 2.

[0066] The third embodiment:

[0067] A tobacco leaf baking device for optimizing the baking environment by using external aids, please refer to Figures 1 - 9, on the basis of the second embodiment, the difference from the second embodiment is that a filter plate 16 for blocking tobacco leaf debris is installed at the air inlet passage 402 of the first heat insulation plate 4, effectively avoiding tobacco leaf debris or dust from adhering to the tobacco leaves to be dried along with the hot air circulation, and further improving the quality of tobacco leaf drying.

[0068] Furthermore, a moving table 11 capable of reciprocating along the length direction is installed in the air guiding frame 10. The specific way to drive the moving table 11 to move is a common linear guide rail motion mechanism in the prior art. The principle of the reciprocating movement of the moving table 11 will not be elaborated here. A scraping blade 12 for scraping off tobacco leaf debris is fixedly connected to the bottom end of the moving table 11. The baking oven 1 is provided with collecting grooves 102 for collecting tobacco leaf debris at both ends of the movement track of the scraping blade 12. Both ends of the collecting groove 102 are connected with cover plates 103. During the movement of the moving table 11, it can push the tobacco leaf debris or sundries such as dust on the moving path. When the moving table 11 moves to both ends of the movement track, this part of the sundries can be pushed into the collecting groove 102. The staff can open the cover plates 103 to clean the collecting groove 102 regularly.

[0069] Even further, in order to facilitate the staff to clean the collecting groove 102, the collecting groove 102 is of a through structure, and cover plates 103 are provided at both ends of the collecting groove 102. When cleaning the collecting groove 102, only need to open the cover plates 103 at both ends, tie a cotton ball to the end of a long rod, and push the sundries in the collecting groove 102 from one end to the other end to complete the cleaning of the collecting groove 102. Utilize the reciprocating movement of the moving table 11 to collect the tobacco leaf debris falling during the baking of tobacco leaves into the collecting grooves 102 at both ends of the baking oven 1, avoiding the influence of tobacco leaf debris or other sundries on the drying quality of tobacco leaves along with the hot air circulation.

[0070] Fourth embodiment:

[0071] The tobacco leaf baking equipment that optimizes the baking environment by using external additives, please refer to Figures 1 - 9 , on the basis of the third embodiment, the difference from the third embodiment is that the air guiding plate 14 is rotatably connected to the air guiding frame 10, and the position of the rotating shaft is in the direction away from the air inlet passage 402. The air guiding frame 10 is provided with a sliding groove 1001 extending in the direction away from the air inlet passage 402 at the bottom end of each bent part of the air guiding plate 14. The sliding groove 1001 is parallel to the movement direction of the moving table 11. A support rod 15 is slidably connected in the sliding groove 1001. The length of the support rod 15 is greater than the length of the air guiding plate 14, and the height of the support rod 15 is lower than the height of the rotating shaft of the air guiding plate 14. A groove for cooperating with the support rod 15 is provided at the bottom end of the bent part of the air guiding plate 14. When the support rod 15 is clamped in the groove of the air guiding plate 14, the air guiding plate 14 cannot rotate downward. At this time, the staff can safely step on the air guiding plate 14.

[0072] Specifically, a first spring 1002 in a compressed state is disposed between the support rod 15 and the inner wall of the sliding groove 1001. The first spring 1002 in the sliding groove 1001 is used to push the support rod 15 to slide in the direction of the air inlet passage 402. Since the first spring 1002 is always in a compressed state, the support rod 15 is kept in a state of being clamped in the bottom groove of the air deflector 14 without being pushed, ensuring the stability of the air deflector 14 under normal conditions.

[0073] Further, a vertically telescopic telescopic head 13 is connected to the top surface of the mobile platform 11. When the mobile platform 11 moves away from the first heat insulation plate 4, the telescopic head 13 is used to push the support rod 15 to slide in a direction away from the air inlet passage 402. On the contrary, when the mobile platform 11 moves towards the first heat insulation plate 4, since the support rod 15 is already at the end of the sliding groove 1001 at this time, the telescopic head 13 cannot push the support rod 15 in this state. When the mobile platform 11 passes under the air deflector 14, the air deflector 14 can be rotated downward to dump the tobacco debris on the surface, further improving the collection ability of the tobacco debris, and thus improving the economic benefits of tobacco baking.

[0074] In the above embodiment, specifically, please refer to Figures 4 - 9 , the telescopic head 13 is slidably connected to a telescopic groove 1101 in the mobile platform 11. A second spring 1102 is disposed between the bottom end of the telescopic head 13 and the inner wall of the telescopic groove 1101. When the second spring 1102 is not compressed, the top end of the telescopic head 13 is higher than the bottom surface of the support rod 15. After the second spring 1102 is compressed, the top end of the telescopic head 13 can be flush with the bottom surface of the support rod 15. The telescopic head 13 is used to push the support rod 15 when passing through the support rod 15, so that the air deflector 14 completes one rotation.

[0075] Specifically, the elastic coefficient of the second spring 1102 is greater than that of the first spring 1002. When the mobile station 11 moves away from the first heat insulation plate 4, after the telescopic head 13 contacts the support rod 15, the telescopic head 13 pushes the support rod 15 to slide in the direction away from the first heat insulation plate 4. After the support rod 15 slides, since the bottom end of the air deflector 14 is not supported, it rotates downward with its own rotating shaft as the axis, pouring the sundries on the surface of the air deflector 14 into the bottom surface of the air guiding frame 10 for the wiper 12 to clean. The support rod 15 compresses the first spring 1002 in the sliding groove 1001, and the elastic force of the first spring 1002 gradually increases with the sliding of the mobile station 11 until the elastic force exerted by the support rod 15 on the telescopic head 13 is sufficient to make the top end of the telescopic head 13 drop to the same height as the bottom surface of the support rod 15. At this time, the telescopic head 13 will pass by the support rod 15, and then the telescopic head 13 and the support rod 15 are reset by the elastic forces of the second spring 1102 and the first spring 1002 respectively. During the reset process of the support rod 15, it contacts the bottom surface of the air deflector 14 and pushes the air deflector 14 to rotate and reset until it is snapped back into the groove at the bottom end of the air deflector 14.

[0076] When the mobile station 11 moves towards the first heat insulation plate 4, since the support rod 15 is at the end of the sliding groove 1001, the telescopic head 13 will directly drop to the height where its top end is flush with the bottom end of the support rod 15 and pass by the support rod 15, without causing the air deflector 14 to flip and pour.

[0077] When the baking oven in the present invention specifically performs the drying work of tobacco leaves: the aerosol generator 8 generates foreign aerosol, which is discharged from the air outlet channel 401 after passing through the conduit 801 and the dispersion tube 802. The air flow generated by the fan assembly 7 enters the tobacco loading chamber 2 from the air outlet channel 401 under the guidance of the air guiding arc surface 501. The air flow entering the tobacco loading chamber 2 uniformly passes through the tobacco leaves downward, then flows into the space below the air guiding frame 10 through the bent part of the air deflector 14, and finally returns to the heating chamber 3 through the air inlet channel. The air is heated up when passing through the heating furnace 6 and then blown upward by the fan assembly 7 towards the air outlet channel 401, so that the aerosol of the foreign additive is evenly mixed with the circulating hot air, and further the circulating hot air evenly disperses the foreign substances onto the surface of the tobacco leaves in the tobacco loading chamber 2.

[0078] Comparative example:

[0079] The experiments were carried out at Tuanjie Tobacco Station in Cangyuan County, Lincang City and Songfeng Tobacco Station in Xiangcheng County, Xuchang City. Taking the prevention and control of microbial reproduction in the baking room as an example, tobacco leaves with medium field nutrition and consistent growth were selected, and the middle tobacco leaves at leaf position 12 were selected. Under the condition of ensuring that the size, shape, weight, initial moisture content, growth period and yellowing of the leaves were kept consistent, they were used as test materials, marked with signs in the field and harvested after maturity.

[0080] The aerosol generator uses thiabendazole permitted on tobacco to control the mildew disease of tobacco leaves in the curing barn. The thiabendazole is used at the concentration recommended by the manufacturer. In this article, two experimental groups are set for the process of external substances in the inter-leaf space in the loading chamber of tobacco leaves.

[0081] Experimental group T1: Supply of external substances at a low concentration. The working gear of the aerosol generator corresponds to the solution described in the first embodiment.

[0082] Experimental group T2: Supply of external substances at a high concentration. The working gear of the aerosol generator corresponds to the solution described in the second embodiment.

[0083] Control group CK: The tobacco leaves are cured in the conventional curing method without the aerosol generator working, and are carried out by local curing technicians according to the local curing process.

[0084] Use the curing oven in the first embodiment. To prevent cross-contamination between external substances during treatment, the distance between each curing oven treatment is 10 m. The tobacco is sorted according to the tobacco clips in local production. The loading capacity is twenty clips. The sampling window selects the tobacco leaves tagged in the field as test samples. Sampling is carried out on the tobacco clips in the order of sampling every 10 h, and each time 2 complete leaves are taken. After rapid sampling during the curing process, the vacant position of the sampled tobacco leaves is replaced by the tobacco leaves in the same curing period of other curing barns to make up for the gap caused by sampling.

[0085] When specifically detecting the number of microorganisms on the leaves, during the curing of tobacco leaves, after sampling, use a circular cutter with a diameter of 5 cm to cut off the leaves at two symmetric positions in the middle of the tobacco leaves, put them into a pressure cooker, sterilize them for 10 min in an environment with a temperature of 121 °C and a pressure of 0.12 Mpa, take them out, grind and filter them. The screen hole size for filtration is 0.125 mm, and then add sterile water to make up the volume. After dilution by 10,000 times, separation is carried out, and after spreading on a plate, a microscope magnified 2,000 times is used for microorganism counting.

[0086] After the curing is completed, the cured tobacco leaves are graded standardly according to the standard of GB2635-92, and the proportions of upper and middle-grade tobacco leaves and the average price are counted. Take 1 kg of dry tobacco for the analysis of the content of petroleum ether extract, and record the curing time and electricity consumption during the whole process of tobacco leaf curing.

[0087] Please refer to Figure 11, The dynamic change curves of the microbial quantity on tobacco leaves during the baking process. Generally, each curve shows a trend of first rising and then falling. The peak values of the microbial quantities of T1, T2, and CK appear in the early, middle, and late stages of the tobacco leaf yellowing respectively, and there are differences in the peak heights. The lowest value is reached at the end of the tobacco leaf baking; the highest dry-bulb temperature in the bulk curing barn at the end of baking is 68°C. Compared with CK, the residual values of the microbial quantities on the leaves of the two treatments of T1 and T2 are lower. The data comparison between the above experimental groups and the control group shows that adding external mildew remover in the tobacco leaf baking environment can inhibit the reproduction of microorganisms on the leaves during the yellowing period, and further reduce the residual amount of microorganisms on the leaves during the stem-drying period. Moreover, with the increase of the external mildew remover, the effect is more obvious.

[0088] The economic characters of the baked tobacco of each treatment in the experiment are shown in the following table. There are certain differences between the various parameters of T1 and T2. Whether it is the baking time, the fresh-to-dry ratio of tobacco leaves, the proportion of top-grade tobacco, the average selling price, and the baking cost, they are all lower than those of the control CK treatment. However, the fresh-to-dry ratio of tobacco leaves is the ratio of the fresh tobacco quality to the dry tobacco quality before and after baking. After eliminating the error caused by the inconsistent moisture content of the dried tobacco leaves after baking, the higher the ratio, the less dry tobacco is obtained, indicating that the less dry tobacco weight is obtained with the increase of the concentration of external mildew remover in the bulk curing barn. Referring to the statistical data of the fresh tobacco leaf loading amount of 398 kg in the CK treatment, although the electricity cost increases slightly, under the condition of normal tobacco leaf harvesting, after subtracting the energy consumption cost, T1 and T2 have economic benefits that are 42.36 yuan and 75.17 yuan more than CK respectively. For tobacco leaves with more diseases such as lower leaves and diseased leaves, the effect will be more obvious. The electricity price of agricultural electricity in the experimental area is 0.56 yuan / kW·h.

[0089]

[0090]

[0091] In summary, adopting the technical solution of the present application to add external substances during the tobacco leaf baking process can significantly improve the baking quality of tobacco leaves and bring a considerable increase in economic benefits.

[0092] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention and not limitations to the invention. The specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions, and variations that do not make creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A tobacco leaf baking device that uses external additives to optimize the baking environment, characterized in that: include: A baking oven (1), wherein the baking oven (1) comprises a tobacco loading chamber (2) and a heating chamber (3) which are separated from each other, and hot air for baking tobacco leaves circulates in the heating chamber (3) and the tobacco loading chamber (2); An aerosol generator (8) is installed in the baking oven (1), and the aerosol generator (8) is used to disperse the external additive into the circulating hot air.

2. The tobacco leaf baking equipment for optimizing baking environment by using external additives according to claim 1 is characterized in that: A first heat insulation board (4) and a second heat insulation board (5) are arranged in a longitudinal direction in the baking oven (1); the smoke loading chamber (2) is located on one side of the first heat insulation board (4); the heating chamber (3) is located between the first heat insulation board (4) and the second heat insulation board (5); the aerosol generator (8) is installed on a side of the second heat insulation board (5) away from the smoke loading chamber (2); an air outlet channel (401) is arranged at the top end of the first heat insulation board (4), and an air inlet channel (402) is arranged at the bottom end.

3. The tobacco leaf baking equipment for optimizing the baking environment by using external additives according to claim 2 is characterized in that: The aerosol generator (8) is controlled by a tobacco curing control device (9) installed in the baking oven (1), and the output end of the aerosol is connected to a duct (801), and the duct (801) extends to the middle of the air outlet channel (401) and is connected to a dispersion pipe (802).

4. The tobacco leaf baking equipment for optimizing baking environment by using external additives according to claim 2 is characterized in that: An air guide frame (10) is fixedly installed on the bottom surface of the smoke loading chamber (2), and air guide plates (14) are installed at intervals inside the air guide frame (10). One end of the air guide plate (14) close to the air inlet channel (402) is bent downward, and one end of the air guide frame (10) close to the air inlet channel (402) is connected to the heating chamber (3).

5. The tobacco leaf baking equipment for optimizing baking environment by using external additives according to claim 4 is characterized in that: The first heat insulation board (4) is provided with a filter plate (16) for blocking tobacco leaf debris at the air inlet channel (402), a movable platform (11) capable of reciprocating along the length direction is installed in the air guide frame (10), a scraper (12) for scraping off tobacco leaf debris is fixedly connected to the bottom end of the movable platform (11), and a collection trough (102) for collecting tobacco leaf debris is provided at both ends of the movement trajectory of the scraper (12), and both ends of the collection trough (102) are connected to a cover plate (103).

6. The tobacco leaf baking equipment using external additives to optimize the baking environment according to claim 5, characterized in that: The air guide plate (14) is rotatably connected to the air guide frame (10), and the position of the rotation axis is located in a direction away from the air inlet channel (402). The air guide frame (10) is provided with a slide groove (1001) extending in a direction away from the air inlet channel (402) at the bottom end of the curved part of each air guide plate (14), and a support rod (15) is slidably connected in the slide groove (1001). The bottom end of the curved part of the air guide plate (14) is provided with a groove matching the support rod (15). A first spring (1002) in a compressed state is arranged between the support rod (15) and the inner wall of the slide groove (1001), and the first spring (1002) in the slide groove (1001) is used to push the support rod (15) to slide in the direction of the air inlet channel (402). The top surface of the movable platform (11) is connected to a telescopic head (13) that can be vertically telescopic, and the telescopic head (13) is used to push the support rod (15) to slide in the direction away from the air inlet channel (402).

7. The tobacco leaf baking equipment for optimizing baking environment by using external additives according to claim 6 is characterized in that: The telescopic head (13) is slidably connected to a telescopic slot (1101) in the moving platform (11); a second spring (1102) is arranged between the bottom end of the telescopic head (13) and the inner wall of the telescopic slot (1101); when the second spring (1102) is not compressed, the top end of the telescopic head (13) is higher than the bottom surface of the support rod (15); after the second spring (1102) is compressed, the top end of the telescopic head (13) can be flush with the bottom surface of the support rod (15).

8. A tobacco leaf baking method using external additives to optimize the baking environment, characterized in that The process of using the tobacco leaf baking equipment for optimizing the baking environment by using external additives as described in any one of claims 1 to 7 comprises the following steps: Step 1: Select tobacco leaves with medium nutrition and uniform growth in the field as the raw materials for baking, and arrange the tobacco in the local production folders, with a capacity of 20 folders; Step 2: After the tobacco leaf baking begins, the tobacco leaf baking controller detects the actual dry-bulb temperature value through the temperature and humidity sensor installed in the tobacco loading room, identifies and determines the baking state of the tobacco leaf, and starts the aerosol generator of the external aid device at the same time. The aerosol generator provides external aid exogenous aerosol to the tobacco loading room at a gear that adapts to the actual dry-bulb temperature value.

9. The tobacco leaf baking method using external additives to optimize the baking environment according to claim 8, characterized in that: The actual dry-bulb temperature value detected by the temperature and humidity sensor in the step 2 is t. The working gears of the aerosol generator include En1, En2, and En3. When t≤36°C or t>47°C, the aerosol generator does not work. When 36°C<t≤39°C, the aerosol generator works in En1 gear. When 39°C<t≤42°C, the aerosol generator works in En2 gear. When 42°C<t≤47°C, the aerosol generator works in En3 gear.

10. The tobacco leaf baking equipment for optimizing baking environment by using external additives according to claim 9, characterized in that: The working state corresponding to the working gear En1 of the aerosol generator is to work for 1 hour every 3-6 hours, the working state corresponding to the working gear En2 is to work for 1 hour every 6-12 hours, and the working state corresponding to the working gear En3 is to work for 1 hour every 12-24 hours.

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