CN112754059B

CN112754059B - Tobacco uniform baking equipment

Info

Publication number: CN112754059B
Application number: CN202110131256.6A
Authority: CN
Inventors: 施佳莹
Original assignee: Shanghai Xiuming Machinery Equipment Co ltd
Current assignee: Shanghai Xiuming Machinery Equipment Co ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2022-08-05
Anticipated expiration: 2041-01-30
Also published as: CN112754059A

Abstract

The utility model belongs to the technical field of the tobacco processing technique and specifically relates to a tobacco uniform baking equipment is related to, including box, heating device, place in the installation axle of box, a plurality of axis of installing the axle in carry out revolution and carry out the cylinder of placing and the wheel rotation device that the cylinder moved of rotation is placed in the drive of rotation around self axis, the perisporium of placing the cylinder is seted up and is supplied the opening of feeding or the ejection of compact, and it has the cage door that the control opening was opened and close to place the cylinder articulated, the periphery wall and the terminal surface of placing the cylinder have all seted up first bleeder vent, it is provided with the scraping wings in the cylinder to place. This application has the effect that improves the degree of consistency that the tobacco was toasted.

Description

Tobacco uniform baking equipment

Technical Field

The application relates to the technical field of tobacco processing, in particular to tobacco uniform baking equipment.

Background

Nicotiana, Solanaceae, annual or limited perennial herbaceous plants, with a slightly lignified base. The inflorescence grows at the top, is conical and has a plurality of flowers; the shape of the capsule is egg-shaped or rectangular, and the length is approximately equal to the length of the persistent calyx. Blossoming and bearing fruit in summer and autumn.

The tobacco can be made into cigarettes, dry tobaccos, pipe tobaccos, cigars and the like for people to suck, and has multiple medical purposes, the important step of tobacco processing is the tobacco processing after cleaning, and the tobacco is not only dried by cleaning water, but also scorched to enter the next working procedure.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the tobacco baking processing usually adopts tunnel type baking equipment to bake the tobacco, and the tobacco is conveyed into the tunnel type baking equipment through a conveyer belt mode to be baked, so that the uniformity of the heated and baked tobacco is lower, and the tobacco baking quality is further influenced, therefore, further improvement is needed.

Disclosure of Invention

In order to improve the degree of consistency that the tobacco was toasted, this application provides a tobacco uniform roasting equipment.

The application provides a tobacco uniform baking equipment adopts following technical scheme:

the utility model provides an even equipment of toasting of tobacco, includes box, heating device, places the installation axle of box in, a plurality of cylinder and the wheel rotation device of cylinder motion are placed in placing that carries out the revolution around the axis of installation axle and carry out the rotation around self axis, the perisporium of placing the cylinder sets up the opening that supplies feeding or ejection of compact, and it has the cage door that the control opening opened and close to place the cylinder articulated, the periphery wall and the terminal surface of placing the cylinder have all seted up first bleeder vent, it is provided with the scraping wings in the cylinder to place.

By adopting the technical scheme, the cage door is opened to place the tobacco into the placing rollers, the rotating device drives the placing rollers to simultaneously revolve around the axis of the mounting shaft and rotate around the axis of the placing rollers, on one hand, when the placing rollers revolve, the positions of the placing rollers are continuously changed, so that the placing rollers are uniformly heated, and the tobacco baking uniformity in the placing rollers is effectively improved; on one hand, moisture on the tobacco is subjected to the action of a rotating centrifugal force and is discharged out of the placing roller through the first air holes, so that the moisture content of the tobacco is reduced, and the baking efficiency is improved; on the other hand, when placing the cylinder and carrying out the rotation, the in-process that the scraping wings rotated to the top by the bottom drives the tobacco and rotates, because the dead weight drops when tobacco moved to the peak to the realization is to the effect of stirring of tobacco, reduces the tobacco and appears gluing the possibility of folding, improves the bulk of tobacco, helps the dehydration, further improves and toasts efficiency, and toasts the different face of tobacco, further improves the tobacco and toasts the degree of consistency, thereby improves tobacco and toasts the quality.

Preferably, the material pushing plate is provided with a second air hole.

Through adopting above-mentioned technical scheme, steam in the box realizes toasting the tobacco of placing in the cylinder comprehensively through first bleeder vent, second bleeder vent.

Preferably, the rotating device comprises a central inner gear ring fixedly connected to the inner wall of the box body, a central outer gear coaxially arranged in the central inner gear ring and rotatably connected to the inner wall of the box body, a plurality of planetary gears meshed between the central inner gear ring and the central outer gear, and a driving motor driving the central outer gear to rotate, the planetary gears are coaxially and fixedly connected with fixing rods, and the placing roller is connected to the fixing rods in a rotation stopping manner.

Through adopting above-mentioned technical scheme, driving motor drives central outer gear clockwise rotation to drive a plurality of planetary gears and carry out anticlockwise rotation and carry out clockwise rotation around the axis of central ring gear simultaneously around self axis, thereby realize placing the rotation and the revolution of cylinder.

Preferably, the end face of the central inner gear ring is coaxially and fixedly connected with a fixing ring for limiting the planet gear to slide along the axial direction of the planet gear through a bolt.

By adopting the technical scheme, the fixed ring is arranged to limit the degree of freedom of the planetary gear and prevent the planetary gear from being separated from the central outer gear and the central inner gear ring.

Preferably, the mounting shaft is coaxially and fixedly connected to the central outer gear, the placing roller is sleeved on the fixing rod in a sliding mode along the axial direction of the fixing rod, and the mounting shaft is provided with a pushing device for pushing the placing roller to do reciprocating sliding motion.

By adopting the technical scheme, the pushing device is arranged, on one hand, after the tobacco is placed in the placing roller and before the tobacco is baked, the pushing device drives the placing roller to do reciprocating sliding motion, and water adhered to the tobacco is discharged through the first air holes under the action of inertia, so that the tobacco is dehydrated, the moisture content of the tobacco is reduced, and the subsequent baking efficiency is improved; on the other hand, when drying the tobacco, thrust unit drive is placed the cylinder and is made reciprocating sliding motion for the tobacco is tiled in placing the cylinder, reduces the tobacco and appears the possibility of piling up the phenomenon, thereby guarantees the effect of toasting of tobacco.

Preferably, thrust unit including fixed cover locate the installation board of axle, along the axial of installation axle slide the cover locate the slurcam of installation axle, fixed connection slides with the drive slurcam between installation board and slurcam so that slurcam activity butt in the flexible impeller of placing the cylinder terminal surface, fixed cover locate the dead lever and be located the fixed plate of placing the cylinder and keeping away from the one end of slurcam and fixed connection in the fixed plate and place the compression spring between the terminal surface of cylinder, compression spring's one end fixed connection in the fixed plate and other end fixed connection in the terminal surface of placing the cylinder.

Through adopting above-mentioned technical scheme, flexible impeller extension drive slurcam slides towards being close to and placing the cylinder direction to the promotion is placed the cylinder and is slided towards being close to the fixed plate direction, and compression spring receives the extrusion and has elastic potential energy, and flexible impeller contraction drive slurcam slides towards keeping away from and placing the cylinder direction, and breaks away from in placing the cylinder terminal surface, and compression spring resets and forces to place the cylinder and slide towards keeping away from the fixed plate direction, thereby realizes placing the reciprocating sliding motion of cylinder.

Preferably, the telescopic pushing member is an electric push rod with a cylinder body fixedly connected to the mounting plate, and the end part of a piston rod of the electric push rod is fixedly connected to the pushing plate.

Through adopting above-mentioned technical scheme, electric putter's piston rod is flexible to realize the reciprocating sliding motion of slurcam, and reaction rate is fast, improves work efficiency.

Preferably, the heating device comprises a hot air pipe communicated with the box body, an air heater with an air outlet connected to the hot air pipe, a circulating pipe communicated with the box body and communicated with an air inlet of the air heater, and a heater arranged on the circulating pipe to heat air, and the fixing rod is coaxially and fixedly sleeved with a blowing impeller positioned at one end of the roller.

Through adopting above-mentioned technical scheme, the air heater passes through the hot-blast main to the inside steam of carrying of box, thereby toast the tobacco of placing in the cylinder, the gas after the heat transfer gets into heat heater through the circulating pipe and heats, pass through the air heater again, the hot-blast main gets into the box, the dead lever rotates and drives the impeller rotation of blowing, the impeller that blows produces the transverse air current, on the one hand, blow the entering through first bleeder vent with hot-blast and place the cylinder, thereby toast the tobacco, on the other hand, make hot-blast homodisperse to inside the box, provide stoving effect and drying efficiency.

Preferably, each fixing rod is provided with one blowing impeller, and the blowing impellers on two adjacent fixing rods are distributed at two ends of the placing roller in a staggered manner.

Through adopting above-mentioned technical scheme, the impeller of blowing on two adjacent dead levers is crisscross distribution in the both ends of placing the cylinder, forms the convection current, increases hot-blast utilization ratio.

Preferably, the outer side of the box body is communicated with a flue gas treatment box through a pipeline, filter cotton only allowing gas to pass through is arranged in the flue gas treatment box, and the circulating pipe is communicated with the flue gas treatment box.

Through adopting above-mentioned technical scheme, be provided with the filter pulp in the flue gas treatment case, the smoke and dust in the internal gas of filter case can be filtered fast.

In summary, the present application includes at least one of the following beneficial technical effects:

the rotary device drives the placing rollers to simultaneously revolve around the axis of the mounting shaft and rotate around the axis of the rotary device, so that on one hand, when the placing rollers revolve, the positions of the placing rollers are constantly changed, the placing rollers are uniformly heated, and the tobacco baking uniformity in the placing rollers is effectively improved; on one hand, moisture on the tobacco is subjected to the action of a rotating centrifugal force and is discharged out of the placing roller through the first air holes, so that the moisture content of the tobacco is reduced, and the baking efficiency is improved; on the other hand, when the roller is placed for rotation, the pushing plate drives the tobacco to rotate in the process of rotating from the bottom to the top, and when the tobacco moves to the highest point, the tobacco falls due to dead weight, so that the tobacco is turned, the possibility of sticking and overlapping of the tobacco is reduced, the looseness of the tobacco is improved, the dehydration is facilitated, the baking efficiency is further improved, different surfaces of the tobacco are baked, the baking uniformity of the tobacco is further improved, and the baking quality of the tobacco is improved;

on one hand, after the tobacco is placed in the placing roller and before the tobacco is baked, the pushing device drives the placing roller to do reciprocating sliding motion, and water adhered to the tobacco is discharged through the first air holes under the action of inertia, so that the tobacco is dehydrated, the moisture content of the tobacco is reduced, and the subsequent baking efficiency is improved; on the other hand, when the tobacco is dried, the pushing device drives the placing roller to do reciprocating sliding motion, so that the tobacco is flatly paved in the placing roller, the possibility of the tobacco stacking phenomenon is reduced, and the tobacco baking effect is ensured;

the dead lever rotates and drives the impeller rotation of blowing, and the impeller of blowing produces transverse air flow, and on the one hand, blows the entering through first bleeder vent with hot-blast and places the cylinder to toast the tobacco, on the other hand makes hot-blast homodisperse to the box inside, provides stoving effect and drying efficiency.

Drawings

FIG. 1 is a schematic view showing the overall structure of a device for uniformly roasting tobacco.

Fig. 2 is a schematic structural view of the wheel rotating apparatus.

Fig. 3 is a schematic structural view of the pushing device.

Fig. 4 is a schematic view of the structure of the fixing rod.

Fig. 5 is a schematic view of the structure of the placing roller.

Fig. 6 is a schematic view of the internal structure of the placing drum.

Fig. 7 is a schematic structural view of the stripper plate.

Description of reference numerals: 1. a box body; 11. a box door; 12. a drain pipe; 13. a shutoff valve; 14. a flue gas treatment box; 15. a pipeline; 2. a heating device; 21. a hot air pipe; 22. a hot air blower; 23. a heater; 24. a circulation pipe; 3. installing a shaft; 41. a first air vent; 42. a cage door; 43. a bolt; 44. a socket; 45. a through hole; 46. a rotation stopping slide block; 47. connecting columns; 48. a material pushing plate; 481. a second air hole; 482. hinging a shaft; 483. a torsion spring; 49. a hinged lever; 4. placing a roller; 5. a wheel rotating device; 51. a central annular gear; 52. a center outer gear; 53. a planetary gear; 54. a drive motor; 55. a fixing ring; 56. fixing the rod; 561. a rotation stopping groove; 57. a blowing impeller; 6. a pushing device; 61. mounting a plate; 62. a push plate; 621. a third air hole; 63. an electric push rod; 64. a fixing plate; 65. compressing the spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses tobacco uniform baking equipment, referring to fig. 1 and 2, which comprises a box body 1, a heating device 2, an installation shaft 3 arranged in the box body 1, a plurality of placing rollers 4 revolving around the axis of the installation shaft 3 and rotating around the axis of the placing rollers 4, and a rotary device 5 driving the placing rollers 4 to move.

Referring to fig. 1, a box door 11 is hinged to one side of a box body 1, a drain pipe 12 is connected to the bottom of the side wall of the box body 1, and a shutoff valve 13 is arranged on the drain pipe 12. The outer side of the box body 1 is communicated with a flue gas treatment box 14 through a pipeline 15, and filter cotton (not shown in the figure) only allowing gas to pass through is arranged in the flue gas treatment box 14. The heating device 2 comprises a hot air pipe 21 communicated with the top wall of the box body 1, a hot air blower 22 with an air outlet connected with the hot air pipe 21, a circulating pipe 24 communicated with the flue gas treatment box 14 and communicated with an air inlet of the hot air blower 22, and a heater 23 arranged on the circulating pipe 24 to heat the gas, wherein the hot air blower 22 and the heater 23 are both fixedly connected with the top wall of the box body 1.

Referring to fig. 1 and 2, the wheel rotating device 5 includes two central ring gears 51 fixedly connected to opposite inner sidewalls of the casing 1, respectively, a central outer gear 52 coaxially disposed in the central ring gears 51 and rotatably connected to the inner sidewalls of the casing 1, a plurality of planet gears 53 engaged between the central ring gear 51 and the central outer gear 52, and a driving motor 54 for driving the central outer gear 52 to rotate. The axes of the planetary gears 53 and the central external gear 52 are parallel, the end surface of the central internal gear 51 is coaxially and fixedly connected with a fixed ring 55 for limiting the planetary gears 53 to slide along the axial direction thereof through bolts, and the end surface of the fixed ring 55 abuts against the end surface of the planetary gears 53 to effectively prevent the planetary gears 53 from separating from the central internal gear 51.

Referring to fig. 2 and 3, both ends of the mounting shaft 3 are respectively and coaxially fixedly connected to the two central outer gears 52, the planetary gears 53 are coaxially and fixedly connected to a fixing lever 56, and both ends of the fixing lever 56 are respectively and coaxially and fixedly connected to the two planetary gears 53 opposite to the side wall of the housing 1. The driving motor 54 is fixedly connected to the outer side wall of the case 1, and the output shaft of the driving motor 54 is coaxially and fixedly connected to one of the central outer gears 52. The fixing rods 56 are coaxially and fixedly sleeved with blowing impellers 57 positioned at one end of the placing roller 4, each fixing rod 56 is provided with one blowing impeller 57, and the blowing impellers 57 on two adjacent fixing rods 56 are distributed at two ends of the placing roller 4 in a staggered manner.

Referring to fig. 4 and 5, the roller 4 is placed to be connected to the fixing rod 56 in a rotation stopping manner, the roller 4 is placed to be connected to the connecting column 47 in a coaxial and fixedly connected manner, one end of the roller 4 is placed to coaxially penetrate through the through hole 45 formed in the fixing rod 56 in a penetrating manner, the through hole 45 extends to the other end of the roller 4, and the diameter of the through hole 45 is smaller than the outer diameter of the connecting column 47. The outer peripheral wall of the fixed rod 56 is provided with a rotation stopping groove 561 along the axial direction, and the inner wall of the through hole 45 is provided with a rotation stopping slide block 46 which is connected to the rotation stopping groove 561 in a sliding mode. The placing roller 4 is slidably sleeved on the fixing rod 56 along the axial direction of the fixing rod 56,

referring to fig. 3, the mounting shaft 3 is provided with a pushing device 6 for pushing the placing roller 4 to perform a reciprocating sliding motion, the moving device 6 includes a mounting plate 61 fixedly sleeved on the mounting shaft 3, a pushing plate 62 slidably sleeved on the mounting shaft 3 along the axial direction of the mounting shaft 3, a telescopic pushing member fixedly connected between the mounting plate 61 and the pushing plate 62 for driving the pushing plate 62 to slide so that the pushing plate 62 is movably abutted to the end surface of the placing roller 4, a fixing plate 64 fixedly sleeved on the fixing rod 56 and located at one end of the placing roller 4 far away from the pushing plate 62, and a compression spring 65 fixedly connected between the fixing plate 64 and the end surface of the placing roller 4. The pushing plate 62 is provided with a through hole for the mounting shaft 3 to pass through, the pushing plate 62 is provided with a third air hole 621, one end of the compression spring 65 is fixedly connected to the fixing plate 64, and the other end of the compression spring is fixedly connected to the end surface of the placing roller 4. The telescopic pushing part is an electric push rod 63 with a cylinder body fixedly connected to the mounting plate 61, the end part of a piston rod of the electric push rod 63 is fixedly connected to the pushing plate 62, and the axis of the piston rod of the electric push rod 63 is parallel to the axis of the mounting shaft 3.

Referring to fig. 5 and 6, the peripheral wall of the placing roller 4 is provided with an opening for feeding or discharging, and the placing roller 4 is hinged with a cage door 42 for controlling the opening and closing of the opening. The outer wall of the free end of the cage door 42 is provided with a bolt 43, a socket 44 for the bolt 43 to be inserted is arranged on the peripheral wall of the placing roller 4, the bolt 43 is inserted with the socket 44 on the placing roller 4 after the cage door 42 is closed to realize locking matching, and the peripheral wall, the end face and the cage door 42 of the placing roller 4 are all provided with first air holes 41 for water and air to pass through. The inner wall of the placing roller 4 is hinged with a material pushing plate 48, and the length direction of the material pushing plate 48 is parallel to the axial direction of the placing roller 4. The material pushing plate 48 is opened with a second air hole 481.

Referring to fig. 6 and 7, the upper parts of both sides of the material pushing plate 48 are convexly provided with an articulated shaft 482, the articulated shaft 482 is sleeved with a torsion spring 483 forcing the free end of the material pushing plate 48 to rotate and turn towards the cage door 42, one end of the torsion spring 483 is fixedly connected to the side wall of the material pushing plate 48, and the other end of the torsion spring 483 is fixedly connected to the inner wall of the end surface on which the roller 4 is placed. The inner wall of the cage door 42 is hinged with a hinge rod 49, the other end of the hinge rod 49 is hinged with a material pushing plate 48, after the cage door 42 is covered, the width direction of the material pushing plate 48 is parallel to the radial direction of the placing roller 4, at the moment, a torsion spring 483 has elastic potential energy, when the bolt 43 is separated from the socket 44, the torsion spring 483 forces the free end of the material pushing plate 48 to rotate and turn towards the direction close to the cage door 42, so that the free end of the cage door 42 is driven by the hinge rod 49 to turn towards the outer side, the opening is in a normally open state, and the cage door 42 is not required to be supported by a worker during feeding or discharging.

The implementation principle of the tobacco uniform baking equipment in the embodiment of the application is as follows: after the tobacco is placed in the placing rollers 4 and before the tobacco is baked, the pushing device 6 drives the placing rollers 4 to do reciprocating sliding motion at the same time, and water adhered to the tobacco is discharged through the first air holes 41 under the action of inertia, so that the tobacco is dehydrated, the moisture content of the tobacco is reduced, and the subsequent baking efficiency is improved; when drying the tobacco, the pushing device 6 drives the placing roller 4 to do reciprocating sliding motion, so that the tobacco is flatly laid in the placing roller 4, the possibility of stacking of the tobacco is reduced, and the baking effect of the tobacco is ensured.

Drying the tobacco: the driving motor 54 drives the central outer gear 52 to rotate clockwise, so as to drive the plurality of planet gears 53 to rotate anticlockwise around the axes thereof and rotate clockwise around the axis of the central inner gear ring 51, so as to realize the rotation and revolution of the placing rollers 4, the positions of the plurality of placing rollers 4 are constantly changed, the plurality of placing rollers 4 are uniformly heated, and the tobacco baking uniformity in the placing rollers 4 is effectively improved; on one hand, the moisture on the tobacco is subjected to the action of the rotating centrifugal force and is discharged out of the placing roller 4 through the first air holes 41, so that the moisture content of the tobacco is reduced, and the baking efficiency is improved; on the other hand, when placing cylinder 4 and carrying out the rotation, the in-process that scraping wings 48 rotated to the top by the bottom drives the tobacco and rotates, because the dead weight drops when tobacco moved to the peak to the realization is to the effect of stirring of tobacco, reduces the tobacco and appears gluing the possibility of folding, improves the bulk of tobacco, helps the dehydration, further improves and toasts efficiency, and toasts the different face of tobacco, further improves the tobacco and toasts the degree of consistency, thereby improves tobacco and toasts the quality.

In addition, the dead lever 56 rotates and drives the impeller 57 that bloies and rotate, and the impeller 57 that bloies produces horizontal air current, on the one hand, blows the entering through first bleeder vent 41 with hot-blast and places cylinder 4 to toast the tobacco, on the other hand, make hot-blast homodisperse to box 1 inside, provide stoving effect and drying efficiency.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a tobacco uniform baking equipment which characterized in that: the automatic feeding device comprises a box body (1), a heating device (2), an installation shaft (3) arranged in the box body (1), a plurality of placing rollers (4) which revolve around the axis of the installation shaft (3) and rotate around the axis of the placing rollers and a rotating device (5) for driving the placing rollers (4) to move, wherein openings for feeding or discharging are formed in the peripheral wall of the placing rollers (4), cage doors (42) for controlling the opening and closing of the openings are hinged to the placing rollers (4), first air holes (41) are formed in the peripheral wall and the end face of the placing rollers (4), and material pushing plates (48) are arranged in the placing rollers (4);

the rotating device (5) comprises a central inner gear ring (51) fixedly connected to the inner wall of the box body (1), a central outer gear (52) coaxially arranged in the central inner gear ring (51) and rotatably connected to the inner wall of the box body (1), a plurality of planetary gears (53) meshed between the central inner gear ring (51) and the central outer gear (52) and a driving motor (54) driving the central outer gear (52) to rotate, wherein the planetary gears (53) are coaxially and fixedly connected with a fixed rod (56), and the placing roller (4) is connected to the fixed rod (56) in a rotation stopping manner;

the mounting shaft (3) is coaxially and fixedly connected with the central outer gear (52), the placing roller (4) is sleeved on the fixing rod (56) in a sliding manner along the axial direction of the fixing rod (56), and the mounting shaft (3) is provided with a pushing device (6) for pushing the placing roller (4) to do reciprocating sliding movement;

thrust unit (6) including fixed cover locate mounting panel (61) of installation axle (3), axial slip cover along installation axle (3) is located push plate (62) of installation axle (3), fixed connection slides with drive push plate (62) between mounting panel (61) and push plate (62) so that push plate (62) activity butt in the flexible impeller of placing cylinder (4) terminal surface, fixed cover locate dead lever (56) and be located and place fixed plate (64) and the fixed connection (65) of fixed plate (64) and the terminal surface of placing cylinder (4) of the one end of cylinder (4) keeping away from push plate (62), the one end fixed connection of compression spring (65) is in fixed plate (64) and other end fixed connection in the terminal surface of placing cylinder (4).

2. The tobacco curing apparatus according to claim 1, wherein: the material pushing plate (48) is provided with a second air hole (481).

3. The tobacco curing apparatus according to claim 1, wherein: the end face of the central inner gear ring (51) is coaxially and fixedly connected with a fixing ring (55) which limits the planetary gear (53) to slide along the axial direction through bolts.

4. The tobacco curing apparatus according to claim 1, wherein: the telescopic pushing piece is an electric pushing rod (63) with a cylinder body fixedly connected to the mounting plate (61), and the end part of a piston rod of the electric pushing rod (63) is fixedly connected to the pushing plate (62).

5. The tobacco curing apparatus according to claim 1, wherein: the heating device (2) comprises a hot air pipe (21) communicated with the box body (1), an air heater (22) with an air outlet connected to the hot air pipe (21), a circulating pipe (24) communicated with the box body (1) and communicated with an air inlet of the hot air heater (22), and a heater (23) arranged on the circulating pipe (24) to heat air, wherein a blowing impeller (57) positioned at one end of the roller (4) is coaxially and fixedly sleeved with the fixing rod (56).

6. The tobacco uniform curing apparatus according to claim 5, wherein: each fixing rod (56) is provided with one blowing impeller (57), and the blowing impellers (57) on two adjacent fixing rods (56) are distributed at two ends of the placing roller (4) in a staggered manner.

7. The tobacco curing apparatus according to claim 5, wherein: the outer side of the box body (1) is communicated with a flue gas treatment box (14) through a pipeline (15), filter cotton only allowing gas to pass through is arranged in the flue gas treatment box (14), and a circulating pipe (24) is communicated with the flue gas treatment box (14).