Tobacco leaf drying machine

Abstract

The utility model provides a tobacco leaf drying machine which comprises a machine body, the wall portion of the machine body is provided with a cavity, the cavity is internally provided with a filtering part, the filtering part is configured to filter harmful substances in gas, and the cavity is provided with two air openings communicating with the interior of the machine body; the drying frame is arranged in the machine body and is configured to place and fix tobacco leaves; the heater is configured to provide heat required for drying the tobacco leaves; and the air inducing device is configured to guide air in the machine body to enter the cavity from one air opening and return to the interior of the machine body through the other air opening. According to the tobacco leaf drying machine, harmful substances in gas generated during tobacco leaf drying can be effectively filtered, and heat loss during gas filtering is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of tobacco leaf processing equipment, and in particular to a tobacco leaf drying machine. Background Art

[0002] When the tobacco dryer is in operation, the flue gas generated during the flue-curing process is drawn into the boiler via an induced draft fan. After being thoroughly mixed with the high-temperature air in the combustion chamber, the clean hot air, treated by a dust removal device, enters the drying chamber. When the hot air temperature reaches approximately 100°C, the wet tobacco leaves fed by the blower begin to rapidly heat, evaporate, and dehydrate.

[0003] Although the tobacco leaf dryers currently used can guarantee the quality of tobacco leaf processing to a certain extent, there is still room for improvement in the following two aspects: 1. The tobacco leaf dryer will generate a large amount of heat and gas when working, which may contain some harmful substances that cannot be effectively filtered and are likely to endanger human health; 2. When the tobacco leaf dryer is baking, filtering the air often causes heat loss, making it difficult to retain heat to the greatest extent. Utility Model Content

[0004] The purpose of the present disclosure is to provide a tobacco leaf drying machine to effectively filter harmful substances in the gas generated during tobacco leaf drying and reduce heat loss during gas filtration.

[0005] The present disclosure provides a tobacco leaf drying machine, comprising:

[0006] A body, wherein a cavity is provided on a wall of the body, a filter component is provided inside the cavity, the filter component is configured to filter harmful substances in the gas, and the cavity is provided with two air vents communicating with the interior of the body;

[0007] a drying rack, disposed inside the machine body and configured to place and fix tobacco leaves;

[0008] a heater configured to provide heat required for drying the tobacco leaves; and

[0009] The air induction device is configured to guide the air inside the body to enter the cavity through one of the air ports and return to the interior of the body through the other air port.

[0010] In some embodiments, a transmission mechanism is included, and the air-inducing device includes a first fan and a second fan, the first fan and the second fan respectively correspond to the two air outlet positions, the transmission mechanism has a power input end and two first power output ends with opposite rotation directions, the first fan and the second fan are respectively connected to the two first power output ends so that the gas flow directions at the two air outlet positions are opposite.

[0011] In some embodiments, the drying rack is rotatably disposed relative to the machine body.

[0012] In some embodiments, the system comprises at least one drying rack and a transmission mechanism, wherein the transmission mechanism has a power input end and at least one second power output end correspondingly connected to the at least one drying rack to drive the at least one drying rack to rotate.

[0013] In some embodiments,

[0014] The air induction device includes a first fan and a second fan, the first fan and the second fan respectively corresponding to the two air outlet positions, the drying rack is rotatably arranged relative to the machine body, and the tobacco dryer includes at least one drying rack and a transmission mechanism, the transmission mechanism having a power input end, two first power output ends and at least one second power output end;

[0015] Among them, the rotation directions of the two first power output ends are opposite, the first fan and the second fan are respectively connected to the two first power output ends so that the gas flow directions at the positions of the two air outlets are opposite, and at least one second power output end is correspondingly connected to at least one drying rack to drive at least one drying rack to rotate.

[0016] In some embodiments, the transmission mechanism includes a pulley mechanism and / or a gear mechanism.

[0017] In some embodiments,

[0018] The transmission mechanism includes a first rotating shaft, a second rotating shaft, a third rotating shaft, a fourth rotating shaft, a first pulley, a second pulley, a third pulley, a fourth pulley, a fifth pulley, a sixth pulley, a first bevel gear, a second bevel gear, a first transmission rope and a second transmission rope;

[0019] The transmission gear is connected with the gear train of the first transmission gear and the transmission gear is connected with the gear of the first transmission gear and the transmission gear is connected with the gear of the first transmission gear.

[0020] In some embodiments,

[0021] The tobacco leaf drying machine comprises a plurality of drying racks, which are divided into two layers distributed along the upper and lower directions of the machine body, and each layer of the drying racks comprises at least one drying rack;

[0022] The transmission mechanism further includes a plurality of fifth rotating shafts, at least one third bevel gear, at least one fourth bevel gear and a plurality of fifth bevel gears;

[0023] Multiple fifth rotating shafts, multiple fifth bevel gears and multiple drying racks are arranged correspondingly, at least one third bevel gear is coaxially fixedly connected to the second rotating shaft and meshes with the fifth bevel gear corresponding to at least one drying rack on one layer, at least one fourth bevel gear is coaxially fixedly connected to the third rotating shaft and meshes with the fifth bevel gear corresponding to at least one drying rack on another layer, the first end of the fifth rotating shaft is coaxially fixedly connected to the corresponding fifth bevel gear, and the second end of the fifth rotating shaft is the second power output end and is fixedly connected to the corresponding drying rack.

[0024] In some embodiments, the drying rack includes a supporting portion and a mask portion arranged relatively to each other, the supporting portion is configured to place tobacco leaves, and the mask portion and the supporting portion can be arranged close to or far away from each other to clamp or loosen the tobacco leaves placed on the supporting portion.

[0025] In some embodiments, the supporting portion includes a bracket and a base plate, the base plate can be installed on the bracket in a push-pull manner, and the supporting portion and the mask portion are configured to approach each other in response to the action of the base plate being pushed into the interior of the bracket, and to move away from each other in response to the action of the base plate being pulled out of the interior of the bracket.

[0026] In some embodiments,

[0027] The drying rack further includes two corresponding first racks, two gear pairs and two second racks, wherein the two first racks are respectively arranged on both sides of the bottom plate and extend along the push-pull direction of the bottom plate, and the second racks are perpendicular to the extension directions of the corresponding first racks and are connected to each other through the corresponding gear pairs;

[0028] The drying rack further comprises two guide racks arranged opposite to each other and at least one group of movable rods, each group of movable rods comprising at least one movable rod, two second racks being respectively connected to the two guide racks and the two guide racks being arranged to be close to or away from each other along the extension direction of the second racks, each guide rack being provided with a guide groove corresponding to each movable rod, two ends of the movable rod being respectively slidably connected to the corresponding guide grooves of the two guide racks, and the extension direction of the guide groove being configured to enable the movable rod to be moved close to or away from the bracket in response to the movement of the guide rack along the extension direction of the second rack;

[0029] The bracket is movably mounted on the guide frame along an extending direction of the second rack, and the shield portion is mounted on one group of the moving rods.

[0030] In some embodiments, at least a portion of the bottom plate is in a grid shape, and / or at least a portion of the mask portion is in a grid shape.

[0031] In some embodiments, a water absorbing component is further provided inside the cavity, and the water absorbing component is configured to absorb moisture in the gas.

[0032] In some embodiments, the two filter components are respectively arranged corresponding to the two air outlets, and the water absorption component is arranged between the two filter components along the flow direction of the gas.

[0033] During operation, the tobacco dryer provided by the embodiments of the present disclosure, under the action of the air induction device, can draw air from the interior of the machine body into the cavity through one of the air vents. After interacting with the filter component in the cavity, it returns to the interior of the machine body through the other air vent. This effectively filters harmful substances from the air generated during tobacco drying. Furthermore, this gas circulation process occurs within the machine body and the cavity, reducing heat loss during gas filtration and thus lowering the heating costs required for tobacco drying.

[0034] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of this application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0036] Figure 1 This is a schematic structural diagram of a tobacco drying machine according to some embodiments of the present disclosure.

[0037] Figure 2 for Figure 1 The front view structural diagram of the tobacco drying machine shown.

[0038] Figure 3 for Figure 1 The structure diagram of one of the walls of the tobacco dryer is shown.

[0039] Figure 4 for Figure 3 A schematic diagram of the internal structure of one of the walls of the body is shown.

[0040] Figure 5 for Figure 1 The schematic diagram of the structure of the transmission mechanism of the tobacco dryer is shown.

[0041] Figure 6 for Figure 1 The structure diagram of the drying rack and transmission mechanism of the tobacco dryer shown in FIG.

[0042] Figure 7 for Figure 6 A schematic diagram of the structure of one of the drying racks is shown.

[0043] Figure 8 for Figure 7 Schematic diagram of the exploded structure of the drying rack shown.

[0044] In the accompanying drawings, the reference numerals represent:

[0045] 1. Machine body; 2. Machine door; 3. Bottom foot; 4. Air outlet; 5. Heater; 6. Drying rack; 7. Transmission mechanism; 8. Bracket; 9. Fifth shaft; 10. Fifth bevel gear; 11. Gear pair; 12. Bottom plate; 13. Pull plate; 14. First rack; 15. Connecting rod; 16. Second rack; 17. Fixed plate; 18. Inclined plate; 19. Fixed column; 20. Guide groove; 21. Moving rod; 22. Shield; 23. Side wall; 24. Mounting hole; 25. Cavity; 26. First Fan; 27. First rotating shaft; 28. Water absorbing component; 29. ​​Filter component; 30. Second fan; 31. Fourth rotating shaft; 32. Motor; 33. Third pulley; 34. Fourth pulley; 35. First pulley; 36. Second pulley; 37. First transmission rope; 38. Second rotating shaft; 39. Third bevel gear; 40. Fifth pulley; 41. Second transmission rope; 42. Sixth pulley; 43. Third rotating shaft; 44. Fourth bevel gear; 45. First bevel gear; 46. Second bevel gear. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0047] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, these techniques, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary, rather than as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0048] In the description of the present disclosure, it should be understood that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0049] In the description of the present disclosure, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present disclosure; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0050] refer to Figures 1 to 8 , an embodiment of the present disclosure provides a tobacco leaf drying machine, comprising a machine body 1, a drying rack 6, a heater 5 and an air induction device.

[0051] The wall of the machine body 1 is provided with a cavity 25, within which is disposed a filter element 29 configured to filter harmful substances from the air. The cavity 25 is provided with two air vents 4 communicating with the interior of the machine body 1. A drying rack 6 is disposed within the machine body 1 and configured to hold and secure tobacco leaves. A heater 5 is configured to provide the heat required for drying the tobacco leaves. The air induction device is configured to guide air from the interior of the machine body 1 into the cavity 25 through one of the air vents 4 and return to the interior of the machine body 1 through the other air vent 4.

[0052] Optionally, refer to Figure 1 The tobacco leaf drying machine further comprises a door 2 which can be opened and closed on the machine body 1 and a plurality of feet 3 which are arranged on the bottom of the machine body 1. Figures 2 to 4 The cavity 25 is provided on one of the side walls of the housing 1. The filter component 29 may be, for example, an activated carbon air filter plate.

[0053] During operation, the tobacco dryer provided by the disclosed embodiments allows the air inside the machine body 1 to be drawn into the cavity 25 through one of the air vents 4 under the action of the draft device. After interacting with the filter element 29 in the cavity 25, the air is returned to the interior of the machine body 1 through the other air vent 4. This effectively filters harmful substances from the air generated during tobacco drying. Furthermore, this gas circulation process occurs within the machine body 1 and the cavity 25, reducing heat loss during gas filtration and thereby lowering the heating costs required for tobacco drying.

[0054] In some embodiments, reference Figure 4 and Figure 5The tobacco dryer includes a transmission mechanism 7, and the air-inducing device includes a first fan 26 and a second fan 30. The first fan 26 and the second fan 30 correspond to the positions of the two air outlets 4 respectively. The transmission mechanism 7 has a power input end and two first power output ends with opposite rotation directions. The first fan 26 and the second fan 30 are respectively connected to the two first power output ends so that the gas flows in opposite directions at the positions of the two air outlets 4.

[0055] In some embodiments, the drying rack 6 is rotatably disposed relative to the machine body 1 .

[0056] In this embodiment, the drying rack 6 can rotate relative to the body 1 when the tobacco dryer is working. On the one hand, the rotation of the drying rack 6 can make the tobacco leaves heated more evenly during the drying process. On the other hand, it can drive the air flow inside the body 1, making the temperature field inside the body 1 more uniform.

[0057] In some embodiments, the tobacco dryer includes at least one drying rack 6 and a transmission mechanism 7, wherein the transmission mechanism 7 has a power input end and at least one second power output end correspondingly connected to the at least one drying rack 6 to drive the at least one drying rack 6 to rotate.

[0058] In some embodiments, the air induction device includes a first fan 26 and a second fan 30, the first fan 26 and the second fan 30 respectively corresponding to the positions of the two air outlets 4, the drying rack 6 is rotatably arranged relative to the body 1, and the tobacco dryer includes at least one drying rack 6 and a transmission mechanism 7, the transmission mechanism 7 having a power input end, two first power output ends, and at least one second power output end. The two first power output ends rotate in opposite directions, the first fan 26 and the second fan 30 are respectively connected to the two first power output ends so that the gas flow directions at the positions of the two air outlets 4 are opposite, and the at least one second power output end is correspondingly connected to at least one drying rack 6 to drive the at least one drying rack 6 to rotate.

[0059] In this embodiment, the transmission mechanism 7 includes a power input end for driving connection to the drive device, two first power output ends drivingly connected to the first fan 26 and the second fan 30, respectively, and at least one second power output end correspondingly connected to at least one drying rack 6. The tobacco dryer only needs to be provided with a single drive device to achieve the coordinated movement of the first fan 26 and the second fan 30 in the induced draft device, and can also drive the synchronous rotation of the at least one drying rack 6. Optionally, the tobacco dryer further includes a motor 32 drivingly connected to the power input end of the transmission mechanism 7.

[0060] The transmission mechanism 7 of the tobacco drying machine of some embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0061] In some embodiments, the transmission mechanism 7 includes a pulley mechanism and / or a gear mechanism.

[0062] By adopting a pulley mechanism and / or a gear mechanism in the transmission mechanism 7 , the transmission direction can be flexibly changed, thereby facilitating the composite movement of the first fan 26 , the second fan 30 and the drying rack 6 .

[0063] In some embodiments, reference Figures 5 to 8 The transmission mechanism 7 includes a first rotating shaft 27, a second rotating shaft 38, a third rotating shaft 43, a fourth rotating shaft 31, a first pulley 35, a second pulley 36, a third pulley 33, a fourth pulley 34, a fifth pulley 40, a sixth pulley 42, a first bevel gear 45, a second bevel gear 46, a first transmission rope 37 and a second transmission rope 41.

[0064] The third pulley 33 is the power input end of the transmission mechanism 7. The third pulley 33 is coaxially rotatably connected to the first rotating shaft 27. One end of the first rotating shaft 27 is one of the first power output ends and is coaxially fixedly connected to the first fan 26. The fourth pulley 34 is coaxially connected to the first rotating shaft 27 and can rotate relatively. The second rotating shaft 38 is perpendicular to the axis of the first rotating shaft 27. The first pulley 35 is coaxially fixedly connected to the second rotating shaft 38. The second pulley 36 is coaxially connected to the second rotating shaft 38 and can rotate relatively. The first pulley 35, the second pulley 36, the third pulley 33, and the fourth pulley 34 are connected to the first rotating shaft 27. The fifth pulley 40 is coaxially fixedly connected to the second pulley 36 and coaxially rotatably connected to the second rotating shaft 38 through the first transmission rope 37. The fifth pulley 40 and the sixth pulley 42 are coaxially fixedly connected to the third rotating shaft 43 through the second transmission rope 41. The sixth pulley 42 is coaxially fixedly connected to the third rotating shaft 43. The first bevel gear 45 is coaxially fixedly connected to the third rotating shaft 43 and meshes with the second bevel gear 46. The second bevel gear 46 is coaxially fixedly connected to the first end of the fourth rotating shaft 31. The second end of the fourth rotating shaft 31 is another first power output end and is coaxially fixedly connected to the second fan 30.

[0065] refer to Figure 5 The working principle of the transmission mechanism 7 of this embodiment is as follows.

[0066] During tobacco drying, motor 32 inputs power through third pulley 33, driving third pulley 33 to rotate. This in turn, via first transmission rope 37, simultaneously drives fourth pulley 34, first pulley 35, and second pulley 36. At this point, third pulley 33 and fourth pulley 34 rotate in opposite directions, while first pulley 35 and second pulley 36 rotate in opposite directions. Rotation of fourth pulley 34 drives first rotating shaft 27, which in turn drives first fan 26. Rotation of second pulley 36 drives fifth pulley 40, which in turn, drives sixth pulley 42 and third rotating shaft 43 via second transmission rope 41, which in turn drives fourth rotating shaft 31 and second fan 30.

[0067] In some embodiments, reference Figures 5 to 8 The tobacco leaf dryer includes a plurality of drying racks 6, which are divided into two layers distributed along the upper and lower directions of the machine body 1, and each layer of drying racks 6 includes at least one drying rack 6. The transmission mechanism 7 also includes a plurality of fifth rotating shafts 9, at least one third bevel gear 39, at least one fourth bevel gear 44, and a plurality of fifth bevel gears 10.

[0068] Multiple fifth rotating shafts 9 and multiple fifth bevel gears 10 are arranged corresponding to multiple drying racks 6, at least one third bevel gear 39 is coaxially fixedly connected to the second rotating shaft 38 and meshes with the fifth bevel gear 10 corresponding to at least one drying rack 6 on one layer, at least one fourth bevel gear 44 is coaxially fixedly connected to the third rotating shaft 43 and meshes with the fifth bevel gear 10 corresponding to at least one drying rack 6 on another layer, the first end of the fifth rotating shaft 9 is coaxially fixedly connected to the corresponding fifth bevel gear 10, and the second end of the fifth rotating shaft 9 is the second power output end and is fixedly connected to the corresponding drying rack 6.

[0069] Figure 3 The side wall 23 of the machine body 1 is shown to be provided with a cavity 25 . The edge of the side wall 23 is provided with mounting holes 24 corresponding to the plurality of fifth rotating shafts 9 . The fifth rotating shafts 9 are rotatably mounted in the corresponding mounting holes 24 .

[0070] refer to Figure 5 and Figure 6 The working principle of the transmission mechanism 7 of this embodiment is as follows.

[0071] During tobacco drying, the motor 32 inputs power through the third pulley 33, driving the third pulley 33 to rotate. This in turn, via the first transmission rope 37, simultaneously drives the fourth pulley 34, the first pulley 35, and the second pulley 36 to rotate. At this time, the third pulley 33 and the fourth pulley 34 rotate in opposite directions, while the first pulley 35 and the second pulley 36 rotate in opposite directions. The first pulley 35 drives the second rotating shaft 38 to rotate, which in turn drives the third bevel gear 39, the corresponding fifth bevel gear 10, the fifth rotating shaft 9, and the corresponding drying rack 6 on one layer. The rotation of the second pulley 36 drives the fifth pulley 40 to rotate, which, via the second transmission rope 41, drives the sixth pulley 42 and the third rotating shaft 43, which in turn drives the fourth bevel gear 44, the corresponding fifth bevel gear 10, the fifth rotating shaft 9, and the corresponding drying rack 6 on one layer.

[0072] In some embodiments, the drying rack 6 includes a supporting portion and a mask portion 22 arranged opposite to each other. The supporting portion is configured to place tobacco leaves, and the mask portion 22 and the supporting portion can be arranged close to or far away from each other to clamp or loosen the tobacco leaves placed on the supporting portion.

[0073] In this embodiment, before drying the tobacco leaves, the tobacco leaves are placed on the supporting portion and the positions of the mask portion 22 and the supporting portion are adjusted so that the two are close to each other, thereby fixing the tobacco leaves on the drying rack 6; after the tobacco leaves are dried, the positions of the mask portion 22 and the supporting portion are adjusted so that the two are away from each other, thereby facilitating the removal of the tobacco leaves from the drying rack 6.

[0074] In some embodiments, the supporting portion includes a bracket 8 and a base plate 12, the base plate 12 can be installed on the bracket 8 in a push-pull manner, and the supporting portion and the mask portion 22 are configured to approach each other in response to the action of pushing the base plate 12 into the interior of the bracket 8, and move away from each other in response to the action of pulling the base plate 12 out of the interior of the bracket 8.

[0075] In this embodiment, the movement of the support portion and the shield portion 22 toward and away from each other is coordinated and synchronized with the pushing and pulling movement of the bottom plate 12. When the bottom plate 12 is pushed into the interior of the bracket 8, the support portion and the shield portion 22 move toward each other; when the bottom plate 12 is pulled out of the interior of the bracket 8, the support portion and the shield portion 22 move away from each other. This arrangement further facilitates the placement of tobacco leaves in the drying rack 6 and the removal of tobacco leaves from the drying rack 6.

[0076] The structure of the drying rack 6 of the tobacco drying machine of some embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0077] In some embodiments, reference Figures 6 to 8 The drying rack 6 also includes two corresponding first racks 14, two gear pairs 11 and two second racks 16. The two first racks 14 are respectively arranged on both sides of the bottom plate 12 and extend along the push-pull direction of the bottom plate 12. The extension directions of the second racks 16 and the corresponding first racks 14 are perpendicular to each other and are connected through the corresponding gear pairs 11.

[0078] The drying rack 6 also includes two relatively arranged guide racks and at least one group of movable rods 21, each group of movable rods 21 includes at least one movable rod 21, the two second racks 16 are respectively connected to the two guide racks and the two guide racks can be arranged close to or away from each other along the extension direction of the second rack 16, each guide rack is provided with a guide groove 20 corresponding to each movable rod 21, and the two ends of the movable rod 21 are respectively slidably connected with the corresponding guide grooves 20 of the two guide racks, and the extension direction of the guide groove 20 is configured to make the movable rod 21 approach or move away from the bracket 8 in response to the movement of the guide rack along the extension direction of the second rack 16.

[0079] The bracket 8 is movably mounted on the guide frame along the extending direction of the second rack 16 , and the shield portion 22 is mounted on one set of the movable rods 21 .

[0080] Optionally, refer to Figure 8The drying rack 6 further includes a pull plate 13 provided on the bottom plate 12 so as to pull the bottom plate 12 out of or push it into the interior of the bracket 8. Figure 8 The guide frame includes a fixed plate 17, an inclined plate 18, a connecting rod 15, and a fixed column 19. A plurality of inclined plates 18 are connected to the fixed plate 17. Each inclined plate 18 is arranged at an angle relative to the base plate 12 and the second rack 16. Each inclined plate 18 is provided with a guide groove 20. The extension direction of the guide groove 20 is consistent with the extension direction of the inclined plate 18. The second rack 16 is connected to the fixed plate 17 via the connecting rod 15. The fixed column 19 and the connecting rod 15 are arranged side by side and spaced apart along the push-pull direction of the base plate 12. The bracket 8 is movably connected to the connecting rod 15 and the fixed column 19 along the extension direction of the second rack 16. Optionally, the drying rack 6 includes two groups of movable rods 21. Each group of movable rods 21 includes two movable rods 21 arranged side by side and spaced apart along the push-pull direction of the base plate 12. The shield portion 22 is installed between the two movable rods 21 of one group.

[0081] The working principle of the drying rack 6 of this embodiment is as follows.

[0082] When the tobacco leaves are placed on the bottom plate 12 and the bottom plate 12 is pushed into the interior of the bracket 8, the bottom plate 12 slides relative to the bracket 8 and drives the first rack 14 to move in the push-pull direction. The first rack 14 meshes with one of the gears of the gear pair 11 and drives the two gears of the gear pair 11 to rotate. The other gear of the gear pair 11 meshes with the second rack 16 and drives the second rack 16 to pull the corresponding guide frame along its own extension direction. The two guide frames approach each other and squeeze the moving rod 21 at the same time under the action of the guide groove 20, so that the moving rod 21 slides along the guide groove 20 and moves toward the bracket 8. The moving rod 21 also drives the mask part 22 to cover the tobacco leaves placed on the bottom plate 12, thereby fixing the tobacco leaves.

[0083] After the tobacco leaves are dried, when the bottom plate 12 is pulled out from the inside of the bracket 8, the drying rack 6 will make the movable parts therein present a movement state opposite to that when the bottom plate 12 is pushed in, so as to facilitate the removal of the tobacco leaves placed on the bottom plate 12. For details, please refer to the relevant description above.

[0084] In some embodiments, reference Figure 8 At least a portion of the bottom plate 12 is in a grid shape, and / or at least a portion of the mask portion 22 is in a grid shape.

[0085] Optionally, refer to Figures 6 to 8 The bottom plate 12 is a mesh plate, and the cover portion 22 is a net. By configuring at least a portion of the bottom plate 12 and the cover portion 22 in a mesh shape, the tobacco leaves can be fixed between the bottom plate 12 and the cover portion 22, and the moisture in the tobacco leaves can be quickly dissipated.

[0086] In some embodiments, reference Figure 4A water absorbing component 28 is further provided inside the cavity 25 and is configured to absorb moisture in the gas.

[0087] The water absorbing member 28 may include, for example, water absorbing cotton. In this embodiment, the water absorbing member is provided inside the cavity 25 to absorb water vapor emitted into the body 1 during the tobacco leaf drying process, thereby improving the efficiency of tobacco leaf drying.

[0088] In some embodiments, reference Figure 4 The two filter components 29 are respectively arranged corresponding to the two air ports 4, and the water absorption component 28 is arranged between the two filter components 29 along the flow direction of the gas.

[0089] In this embodiment, as the first fan 26 rotates, the gas inside the body 1 is introduced into the interior of the cavity 25 through the corresponding air outlet 4, and first passes through one of the filter components 29 to filter out harmful substances such as particulate matter in the gas, and then passes through the water absorption component 28 to adsorb moisture in the gas, and again passes through another filter component 29 to achieve double-layer filtration of harmful substances. Then, as the second fan 30 rotates, the filtered gas inside the cavity 25 is discharged, realizing the circulation of gas inside the tobacco dryer.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not intended to limit them. Although the present disclosure has been described in detail with reference to preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present disclosure can still be modified or some technical features can be replaced by equivalents, which should all be included in the scope of the technical solutions claimed for protection in the present disclosure.

Claims

1. A tobacco leaf drying machine, characterized in that: include: A body (1), wherein a cavity (25) is provided on a wall of the body (1), a filter component (29) is provided inside the cavity (25), and the filter component (29) is configured to filter harmful substances in the gas, and the cavity (25) is provided with two air ports (4) in communication with the interior of the body (1); A drying rack (6), arranged inside the machine body (1), configured to place and fix tobacco leaves; a heater (5) configured to provide heat required for drying tobacco leaves; and The air induction device is configured to guide the gas inside the body (1) into the cavity (25) through one of the air vents (4) and return to the inside of the body (1) through the other air vent (4).

2. The tobacco leaf drying machine according to claim 1, characterized in that: The invention comprises a transmission mechanism (7), wherein the air induction device comprises a first fan (26) and a second fan (30), wherein the first fan (26) and the second fan (30) respectively correspond to the positions of the two air outlets (4), and the transmission mechanism (7) has a power input end and two first power output ends with opposite rotation directions, wherein the first fan (26) and the second fan (30) are respectively connected to the two first power output ends so that the gas flows in opposite directions at the positions where the two air outlets (4) are located.

3. The tobacco leaf drying machine according to claim 1, characterized in that: The drying rack (6) is rotatably arranged relative to the machine body (1).

4. The tobacco leaf drying machine according to claim 3, characterized in that: The invention comprises at least one drying rack (6) and a transmission mechanism (7), wherein the transmission mechanism (7) has a power input end and at least one second power output end correspondingly connected to the at least one drying rack (6) to drive the at least one drying rack (6) to rotate.

5. The tobacco leaf drying machine according to claim 1, characterized in that: The air induction device comprises a first fan (26) and a second fan (30), the first fan (26) and the second fan (30) respectively corresponding to the positions of the two air outlets (4), the drying rack (6) is rotatably arranged relative to the machine body (1), and the tobacco leaf dryer comprises at least one drying rack (6) and a transmission mechanism (7), the transmission mechanism (7) having a power input end, two first power output ends and at least one second power output end; The two first power output ends rotate in opposite directions, the first fan (26) and the second fan (30) are respectively connected to the two first power output ends so that the gas flows in opposite directions at the locations of the two air outlets (4), and at least one of the second power output ends is correspondingly connected to at least one of the drying racks (6) to drive at least one of the drying racks (6) to rotate.

6. The tobacco leaf drying machine according to claim 5, characterized in that: The transmission mechanism (7) includes a pulley mechanism and / or a gear mechanism.

7. The tobacco leaf drying machine according to claim 6, characterized in that: The transmission mechanism (7) includes a first rotating shaft (27), a second rotating shaft (38), a third rotating shaft (43), a fourth rotating shaft (31), a first pulley (35), a second pulley (36), a third pulley (33), a fourth pulley (34), a fifth pulley (40), a sixth pulley (42), a first bevel gear (45), a second bevel gear (46), a first transmission rope (37) and a second transmission rope (41); The third pulley (33) is the power input end of the transmission mechanism (7). The third pulley (33) is coaxially rotatably connected to the first rotating shaft (27). One end of the first rotating shaft (27) is one of the first power output ends and is coaxially fixedly connected to the first fan (26). The fourth pulley (34) is coaxially fixedly connected to the first rotating shaft (27). The axis of the second rotating shaft (38) and the first rotating shaft (27) are perpendicular to each other. The first pulley (35) is coaxially fixedly connected to the second rotating shaft (38). The second pulley (36) is coaxially rotatably connected to the second rotating shaft (38). The first pulley (35), the second pulley (36), the third pulley (33), and the fourth pulley (34) are coaxially fixedly connected to the first rotating shaft (27). The fifth pulley (40) is coaxially fixedly connected to the second pulley (36) and coaxially rotatably connected to the second rotating shaft (38) through a first transmission rope (37). The fifth pulley (40) and the sixth pulley (42) are coaxially fixedly connected to the third rotating shaft (43) through a second transmission rope (41). The sixth pulley (42) is coaxially fixedly connected to the third rotating shaft (43). The first bevel gear (45) is coaxially fixedly connected to the third rotating shaft (43) and meshes with the second bevel gear (46). The second bevel gear (46) is coaxially fixedly connected to the first end of the fourth rotating shaft (31). The second end of the fourth rotating shaft (31) is another first power output end and is coaxially fixedly connected to the second fan (30).

8. The tobacco leaf drying machine according to claim 7, characterized in that: The tobacco leaf drying machine comprises a plurality of drying racks (6), the plurality of drying racks (6) are divided into two layers distributed in the upper and lower directions of the machine body (1), and each layer of the drying racks (6) comprises at least one drying rack (6); The transmission mechanism (7) further includes a plurality of fifth rotating shafts (9), at least one third bevel gear (39), at least one fourth bevel gear (44), and a plurality of fifth bevel gears (10); A plurality of the fifth rotating shafts (9), a plurality of the fifth bevel gears (10) and a plurality of the drying racks (6) are arranged correspondingly, at least one of the third bevel gears (39) is coaxially fixedly connected to the second rotating shaft (38) and meshed with the fifth bevel gear (10) corresponding to at least one drying rack (6) on one layer, at least one of the fourth bevel gears (44) is coaxially fixedly connected to the third rotating shaft (43) and meshed with the fifth bevel gear (10) corresponding to at least one drying rack (6) on another layer, a first end of the fifth rotating shaft (9) is coaxially fixedly connected to the corresponding fifth bevel gear (10), and a second end of the fifth rotating shaft (9) is the second power output end and is fixedly connected to the corresponding drying rack (6).

9. The tobacco leaf drying machine according to any one of claims 1 to 8, characterized in that: The drying rack (6) comprises a supporting portion and a shield portion (22) arranged opposite to each other, the supporting portion being configured to place tobacco leaves, and the shield portion (22) and the supporting portion being arranged close to or far from each other to clamp or loosen the tobacco leaves placed on the supporting portion.

10. The tobacco leaf drying machine according to claim 9, characterized in that: The supporting portion comprises a bracket (8) and a bottom plate (12), wherein the bottom plate (12) is mounted on the bracket (8) in a push-pull manner, and the supporting portion and the shield portion (22) are configured to approach each other in response to the bottom plate (12) being pushed into the interior of the bracket (8), and to move away from each other in response to the bottom plate (12) being pulled out of the interior of the bracket (8).

11. The tobacco leaf drying machine according to claim 10, characterized in that: The drying rack (6) further comprises two corresponding first racks (14), two gear pairs (11) and two second racks (16), wherein the two first racks (14) are respectively arranged on both sides of the bottom plate (12) and extend along the push-pull direction of the bottom plate (12), and the second racks (16) and the corresponding first racks (14) have extending directions perpendicular to each other and are connected to each other through the corresponding gear pairs (11); The drying rack (6) further comprises two guide racks arranged opposite to each other and at least one group of moving rods (21), each group of the moving rods (21) comprising at least one moving rod (21), two second racks (16) respectively connected to the two guide racks and the two guide racks can be arranged close to or away from each other along the extension direction of the second racks (16), each guide rack is provided with a guide groove (20) corresponding to each moving rod (21), both ends of the moving rod (21) are respectively connected to the corresponding guide grooves (20) of the two guide racks in a sliding fit, and the extension direction of the guide grooves (20) is configured to enable the moving rod (21) to approach or move away from the bracket (8) in response to the movement of the guide rack along the extension direction of the second rack (16); The bracket (8) is movably mounted on the guide frame along the extension direction of the second rack (16), and the mask portion (22) is mounted on one group of the moving rods (21).

12. The tobacco leaf drying machine according to claim 10, characterized in that: At least a portion of the bottom plate (12) is in a grid shape, and / or at least a portion of the mask portion (22) is in a grid shape.

13. The tobacco leaf drying machine according to any one of claims 1 to 8, characterized in that: A water absorbing component (28) is further provided inside the cavity (25), and the water absorbing component (28) is configured to absorb moisture in the gas.

14. The tobacco leaf drying machine according to claim 13, characterized in that: The two filter components (29) are respectively arranged corresponding to the two air outlets (4), and the water absorption component (28) is arranged between the two filter components (29) along the flow direction of the gas.

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