CN115428975A

CN115428975A - Tobacco leaf dryer

Info

Publication number: CN115428975A
Application number: CN202211122509.4A
Authority: CN
Inventors: 张贺翠; 王丹; 常腾腾; 张学杰; 李勇; 袁崇墨; 刘义梅; 朱利泉; 丁伟
Original assignee: Southwest University
Current assignee: Southwest University
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2022-12-06
Anticipated expiration: 2042-09-15
Also published as: CN115428975B

Abstract

The invention relates to the technical field of tobacco production, and discloses a tobacco dryer which comprises a drying bin, a closed top cover, a plurality of groups of heating wires, a functional bin and a front cover plate, wherein the top of the drying bin is used for closing an opening at the upper end of the drying bin, the groups of heating wires are distributed on the inner side wall of the drying bin at intervals in the longitudinal direction, the functional bin is fixedly arranged on the outer wall of the drying bin, the front cover plate is attached to the side port of the drying bin and is used for closing the side space of the drying bin, the bottommost part of a bin body slide bar and the bottommost part of a scraping plate body are in the same horizontal height, adjusting main bins are slidably attached to the outer walls below the two groups of bin body slide bars, main bin connecting rods are fixedly arranged on the opposite surfaces of the two groups of adjusting main bins, an outer rolling groove and an inner rolling groove are arranged on the annular outer side wall of a steel belt ring, and main rolling grooves moving in the inner rolling groove bodies are arranged at the bottoms of the two groups of rolling ball adjusting main bins. The scraper body can be manually adjusted to extend into the depth position of the steel belt ring groove, so that the smearing thickness of the reconstituted tobacco can be freely changed, and the degree of freedom of production and processing is higher.

Description

Tobacco leaf dryer

Technical Field

The invention relates to the technical field of tobacco leaf production, in particular to a tobacco leaf drying machine.

Background

The reconstituted tobacco leaf is also called as a tobacco sheet, which is a sheet-shaped or filiform product prepared by using substances such as tobacco stems, tobacco powder, tobacco flakes and the like in the waste gas of cigarette processing and used as a cigarette filler, the tobacco leaf is mainly prepared by a rolling method, a paper-making method, a slurry preparation method and the like, the thick slurry method is to mix the crushed tobacco substances into an aqueous solution with an adhesive, a reinforcing agent and a humectant, the mixture is uniformly stirred to form a slurry shape, then the thick paste is spread on an annular stainless steel belt to be dried, and the tobacco leaf is formed after shoveling and peeling. One step of the tobacco leaf manufacturing by the thick paste method is to dry and scrape tobacco leaves stored on an annular stainless steel band, the tobacco leaves after being dried can be attached to the annular stainless steel band, the tobacco leaves can not be quickly discharged under the non-external force action, the tobacco leaves to be processed which are attached to the annular stainless steel band in an annular shape need to be scraped manually and by using tools, the positions of the tobacco leaves attached to the surface of the annular stainless steel band are separated, and when thick paste is coated on the annular stainless steel band by the thick paste method, the thick paste needs to be distributed on the annular stainless steel band more uniformly, so that the uniformity of the tobacco leaf production thickness is improved.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects in the prior art, the invention provides a tobacco leaf drying machine which can effectively solve the problems in the prior art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

the invention discloses a tobacco leaf dryer, which comprises a drying bin, a closed top cover, a plurality of groups of heating wires, a functional bin and a front cover plate, wherein the top of the drying bin is used for closing an opening at the upper end of the drying bin;

two groups of bottom rails which are distributed in parallel are fixed on the inner wall of the bottom end of the drying bin, a slider plate is connected above the two groups of bottom rails in a sliding mode through a slot body, a slider pull rod is fixed on the side wall of the slider plate, a plurality of groups of steel band rings are longitudinally arranged on the inner side of the drying bin at intervals, a driving mechanism below the steel band rings is connected among the groups of steel band rings, a scraping plate body is arranged above the inner side of each steel band ring, bin body sliding rods are fixed on two sides of each scraping plate body, the bottommost part of each bin body sliding rod and the bottommost part of each scraping plate body are at the same horizontal height, adjusting main bins are attached to the outer walls below the two groups of bin body sliding rods in a sliding mode, main bin connecting rods are fixedly installed on opposite surfaces of the two groups of adjusting main bins, outer annular side walls and inner annular side walls of the steel band rings are provided with outer rolling slots and inner rolling slots, and main rolling balls moving in the outer rolling slots and the inner rolling slots are arranged at the bottoms of the two groups of adjusting main bins;

the utility model discloses a shovel, including front shroud, shovel board, steel band ring, the inside wall bottom mounting of front shroud has electric putter, and electric putter has the shovel board that has the same quantity with the steel band ring, is fixed with the shovel curb plate between shovel board and the electric putter, the preceding tip of steel band ring is provided with the butt joint platform, and the front end of shovel board passes through torsion spring and connects the shovel piece.

Furthermore, the driving mechanism comprises a driving motor, a motor shaft rod and a ring body connecting rod, wherein the base of the driving motor is fixed on the upper end face of the sliding block plate, the motor shaft rod is fixed at the output end of the driving motor, and the ring body connecting rod is fixed at the top of the motor shaft rod and fixed with the bottom of the steel belt ring.

Furthermore, one side of the base of the drying bin is provided with a functional upright post, a ball screw used for driving the adjusting main bin to move longitudinally is installed at the side groove of the sliding block plate, and a connecting and reinforcing rod connected with the ball screw is installed at the side wall of the bottom end of the adjusting main bin.

Furthermore, scale marks are longitudinally arranged on the end face, close to the bin body sliding rod, of the adjusting main bin, and a marking plate is arranged on the side wall of the bottom end of the bin body sliding rod.

Furthermore, a manual adjusting mechanism for driving the bin body sliding rod to longitudinally move at the side part of the adjusting main bin is arranged on the surface of the adjusting main bin.

Further, manual adjustment mechanism includes regulating roller, spacing inserted bar, spacing groove, vertical regulating plate and drive fluted disc, the surface in regulation main storehouse is seted up to the spacing groove, the regulating roller sets up in the surface in regulation main storehouse and the annular of spacing groove is inboard, spacing roller laminate in the outer wall of regulating roller, spacing inserted bar is fixed in the terminal surface that spacing roller is close to regulation main storehouse, vertical regulating plate laminate is close to the lateral wall of regulation main storehouse surface spout in storehouse body slide bar, the drive fluted disc is fixed in the regulating roller and extends to the inside front end in regulation main storehouse, the drive fluted disc is connected with vertical regulating plate meshing, and spacing inserted bar diameter is coincided with the size of spacing groove, the spout that spacing roller passes through annular inner wall is along the surperficial lateral shifting of regulating roller.

Furthermore, a blocking plate capable of moving longitudinally is arranged at the side opening of the drying bin.

Furthermore, an auxiliary ball with the same size as the main rolling ball is fixed at one end of the shovel side plate far away from the shovel plate.

Furthermore, a groove-shaped groove body is arranged at the central part of the surface of the butt joint platform, and operation parts are arranged at the positions, close to each other, of two ends of the steel belt ring in the annular structure.

(III) advantageous effects

Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:

1. according to the invention, a plurality of groups of steel belt rings for collecting the thick matters are longitudinally arranged in the drying bin, the raw materials of the thick matters are heated and dried on the surfaces of the steel belt rings and then shoveled, the thick matters covering the grooves of the steel belt rings can be evenly smeared by the scraping plate body arranged at the groove at the upper end of the steel belt rings and matched with the driving of the driving motor, so that the thickness of the dried tobacco leaves is more uniform, and the depth position of the scraping plate body extending into the steel belt ring grooves can be manually adjusted, so that the smearing thickness of the reconstituted tobacco leaves can be freely changed, and the freedom degree of production and processing is higher.

2. According to the invention, a group of structures capable of automatically shoveling and pulling the dried tobacco leaves are arranged, the front ends of the shoveling blocks can be tightly attached to the bottom wall of the steel belt ring in the groove by driving of the electric push rod, and a plurality of groups of shoveling blocks can circularly move along the steel belt ring by driving of the limiting groove, so that the tobacco leaves dried and attached to the inner wall of the bottom end of the steel belt ring can be shoveled, the difficulty of manually taking the tobacco leaves is greatly reduced, the tobacco leaves can be more complete, and the crushing degree is smaller.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic view of the structure of the drying chamber of the present invention;

FIG. 3 is a side view of the front cover plate of the present invention;

FIG. 4 is a schematic view of the scraper body of the present invention;

FIG. 5 is an enlarged view of the invention at A;

FIG. 6 is an enlarged view of the steel band of the present invention;

FIG. 7 is a side view of the docking station of the present invention;

FIG. 8 is a schematic view of the structure of the regulating roller of the present invention;

the reference numerals in the drawings denote: 1. a drying bin; 2. closing the top cover; 3. a functional bin; 4. a front cover plate; 5. a barrier plate; 6. a bottom rail; 7. a slider plate; 8. a slider pull rod; 9. a drive motor; 10. a motor shaft lever; 11. a steel belt ring; 12. a heater; 13. a ring link; 14. an outer rolling groove; 15. an inner rolling groove; 16. an operation unit; 17. a functional upright column; 18. a ball screw; 19. connecting a reinforcing rod; 20. adjusting the main bin; 21. a bin body slide bar; 22. a scraper body; 23. a main bin connecting rod; 24. a marking plate; 25. scale lines; 26. a regulating roller; 27. a limiting roller; 28. a limiting inserted rod; 29. a limiting groove; 30. a groove body; 31. a longitudinal adjusting plate; 32. a primary rolling ball; 33. a shovel plate; 34. shoveling the blocks; 35. shoveling a side plate; 36. an electric push rod; 37. a secondary ball; 38. a docking station; 39. the fluted disc is driven.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Examples

The tobacco leaf dryer comprises a drying bin 1, a closed top cover 2 arranged at the top of the drying bin 1 and used for closing an opening at the upper end of the drying bin 1, a plurality of groups of heating wires 12 distributed on the inner side wall of the drying bin 1 at longitudinal intervals, a functional bin 3 fixedly arranged on the outer wall of the drying bin 1 and a front cover plate 4 attached to the side end opening of the drying bin 1 and used for closing the space at the side of the drying bin 1, two groups of bottom rails 6 distributed in parallel are fixed on the inner wall of the bottom end of the drying bin 1, a slider plate 7 is connected above the two groups of bottom rails 6 in a sliding mode through a groove body, a slider pull rod 8 convenient for operating the slider plate 7 is arranged on the side wall of the slider plate 7, the whole bottom rail 6 has a larger diameter in order to draw the slider plate 7 out of the drying bin 1 conveniently, a group of open holes slightly larger than the thickness of the bottom rail 6 is reserved in the front cover plate 4, when feeding is carried out, the inner space of the drying bin 1 is opened by using the front cover plate 4, then the whole slider plate 7 is pulled out from the inside of the drying chamber 1 by holding the slider pull rod 8, a plurality of groups of ring shapes are longitudinally arranged at intervals on the inner side of the drying chamber 1, the upper end of the drying chamber is provided with a groove steel belt ring 11 for bearing thick matters for producing tobacco leaves, the plurality of groups of steel belt rings 11 are connected through a lower driving mechanism, the driving mechanism comprises a driving motor 9, a motor shaft rod 10 and a ring body connecting rod 13, the base of the driving motor 9 is fixed on the upper end surface of the slider plate 7, the motor shaft rod 10 is fixed on the output end of the driving motor 9, the ring body connecting rod 13 is fixed on the top of the motor shaft rod 10 and is fixed with the bottom of the steel belt ring 11, the plurality of groups of steel belt rings 11 are connected through a plurality of groups of ring body connecting rods 13 arranged at the bottom, the central parts of the plurality of groups of ring body connecting rods 13 are connected through a group of motor shaft rod 10, thus when the driving motor shaft rod 10 is driven by the driving motor 9, the motor shaft lever 10 simultaneously drives a plurality of groups of ring body connecting rods 13 and the steel belt rings 11 connected with the ring body connecting rods 13 to rotate.

The upper part in the groove of the steel belt ring 11 is provided with a scraper blade body 22 with a plate-shaped structure, because the scraper blade body 22 is positioned in the groove of the steel belt ring 11, when the steel belt ring 11 is driven to rotate, the scraper blade body 22 positioned above the groove of the steel belt ring 11 can shield a part with a height larger than the bottommost part of the scraper blade body 22, thereby realizing the uniform wiping work of thick objects, two sides of the scraper blade body 22 are both fixed with bin body slide bars 21, the bottommost part of the bin body slide bars 21 and the bottommost part of the scraper blade body 22 are at the same horizontal height, the outer walls below the two sets of bin body slide bars 21 are slidably jointed with adjusting main bins 20, opposite surfaces of the two sets of adjusting main bins 20 are fixedly provided with main bin connecting rods 23, the adjusting main bins 20 are distributed at two sides of the scraper blade body 22, and the two sets of bin body slide bars 21 are kept movably connected with the adjusting main bins 20, when the bin body slide bar 21 moves upwards, the scraper blade body 22 for uniformly wiping thick objects moves upwards in the same direction, so that the thickness of tobacco leaves produced can be increased, otherwise, the thickness of the produced tobacco leaves can be reduced by downward movement of the scraper blade body 22, the outer rolling grooves 14 and the inner rolling grooves 15 are formed in the annular outer side wall of the steel band ring 11 and the annular inner side wall, main rolling balls 32 moving in the outer rolling grooves 14 and the inner rolling grooves 15 are arranged at the bottoms of the two groups of adjusting main bins 20, in order to improve the stability of the scraper blade body 22 in the moving process, the main rolling balls 32 are arranged at the bottoms of the two groups of adjusting main bins 20, the main rolling balls 32 are attached to the grooves of the outer rolling grooves 14 and the inner rolling grooves 15, the scraper blade body 22 moves more uniformly by rolling of the main rolling balls 32, and meanwhile, the main rolling balls 32 also serve as fulcrumples for adjusting the main bins 20 to provide stability.

One side of the base of the drying bin 1 is provided with a functional upright post 17, a side groove of the sliding block plate 7 is provided with a ball screw 18 for driving the adjusting main bin 20 to move longitudinally, the side wall of the bottom end of the adjusting main bin 20 is provided with a connecting reinforcing rod 19 connected with the ball screw 18, the adjusting main bin 20 is driven by the ball screw 18 to move longitudinally, a plurality of groups of adjusting main bins 20 distributed at longitudinal intervals are arranged above the steel band rings 11 with corresponding heights in a non-working state, after the steel band rings 11 are drawn out from the inside of the drying bin 1, the ball screw 18 can be started, the adjusting main bin 20 can move downwards through screw transmission, two groups of main bins 32 can be attached in grooves of the outer rolling grooves 14 and the inner rolling grooves 15, the end surface of the adjusting main bin 20 close to the bin body sliding rod 21 is longitudinally provided with scale lines 25, the side wall of the bottom end of the bin body sliding rod 21 is provided with a marking plate 24, and the marking plate 24 is arranged at the side wall of the bin body sliding rod 21, when the bin body slide bar 21 moves longitudinally, the depth of the scraper body 22 in the groove of the steel belt ring 11 can be more accurately provided by the position of the marking plate 24 on the scale mark 25, the manual adjusting mechanism for driving the bin body slide bar 21 to move longitudinally on the side portion of the adjusting main bin 20 is arranged on the surface of the adjusting main bin 20, the manual adjusting mechanism comprises an adjusting roller 26, a limiting roller 27, a limiting inserted rod 28, a limiting groove 29, a longitudinal adjusting plate 31 and a driving fluted disc 39, the limiting groove 29 is arranged on the surface of the adjusting main bin 20, the adjusting roller 26 is arranged on the surface of the adjusting main bin 20 and on the annular inner side of the limiting groove 29, the limiting roller 27 is attached to the outer wall of the adjusting roller 26, the limiting inserted rod 28 is fixed on the end face of the limiting roller 27 close to the adjusting main bin 20, the longitudinal adjusting plate 31 is attached to the side wall of the bin body slide bar 21 close to the sliding groove on the surface of the adjusting main bin 20, the driving fluted disc 39 is fixed on the front end of the adjusting roller 26 extending to the inside of the adjusting main bin 20, the driving fluted disc 39 is meshed with the longitudinal adjusting plate 31, the diameter of the limiting inserted bar 28 is matched with the size of the limiting groove 29, the limiting roller 27 transversely moves along the surface of the adjusting roller 26 through a chute on the inner annular wall, when the height of the bin body slide bar 21 needs to be adjusted, the surface of the limiting roller 27 is held and rotates, the adjusting roller 26 on the inner side of the limiting roller 27 is forced to rotate, the adjusting roller 26 extends into the driving fluted disc 39 in the adjusting main bin 20 to rotate, the longitudinal adjusting plate 31 is arranged on one side of the driving fluted disc 39 and attached to the surface of the bin body slide bar 21, the height of the bin body slide bar 21 can be adjusted by the meshing connection of the longitudinal adjusting plate 31 and the driving fluted disc 39, after the adjustment is completed, the limiting roller 27 is pushed to the adjusting main bin 20 by the movable connection of the limiting roller 27 and the adjusting roller 26, the limiting inserted bar 28 is clamped into the limiting groove 29 to fix the adjusting roller 26, and the horizontal height of the scraping plate body 22 is kept fixed.

The opening at the side part of the drying bin 1 is provided with a barrier plate 5 which can move longitudinally, the heat loss can be reduced by longitudinally inserting the barrier plate 5 into the opening of the drying bin 1, the bottom end of the inner side wall of the front cover plate 4 is fixed with an electric push rod 36, the side wall of the output end of the electric push rod 36 is provided with shovel plates 33 which have the same number with the steel belt ring 11, a shovel side plate 35 is fixed between the shovel plates 33 and the electric push rod 36, the front end part of the steel belt ring 11 is provided with a butt-joint table 38, the butt-joint table 38 is in an inclined slope shape, the front end of the shovel plate 33 is connected with a shovel block 34 through a torsion spring, the shovel block 34 has downward rotating power through the torsion spring, when the shovel block 34 is attached to the surface of the butt-joint table 38, the shovel block is attached to the surface of the butt-joint table 38 more tightly, the attaching strength is higher, the auxiliary rolling balls 37 with the same size as the main rolling balls 32 are fixed at one end of the shovel side plate 35 far away from the shovel plate 33, after the two groups of auxiliary rolling balls 37 are attached in the grooves of the outer rolling groove 14 and the inner rolling groove 15, the shovel plate 33 can be attached in the groove of the steel belt ring 11, the groove-shaped groove body 30 is arranged at the center of the surface of the butt joint table 38, the operation parts 16 are arranged at the positions, close to each other, of the two ends of the steel belt ring 11 in the annular structure, and the tobacco leaves are in a fragile state after being dried, so that when the shovel block 34 moves to the groove body 30, the tobacco leaves at the groove body 30 can be easily shoveled, and therefore the shovel block 34 can more easily shovel the dried tobacco leaves at the groove of the whole steel belt ring 11.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A tobacco leaf dryer comprises a drying bin (1), a closed top cover (2) arranged at the top of the drying bin (1) and used for closing an opening at the upper end of the drying bin (1), a plurality of groups of heating wires (12) longitudinally distributed on the inner side wall of the drying bin (1) at intervals, a functional bin (3) fixedly arranged on the outer wall of the drying bin (1) and a front cover plate (4) attached to the side end opening of the drying bin (1) and used for closing the space at the side of the drying bin (1);

the method is characterized in that: two groups of bottom rails (6) which are distributed in parallel are fixed on the inner wall of the bottom end of the drying bin (1), a sliding block plate (7) is connected above the two groups of bottom rails (6) in a sliding mode through a groove body, a sliding block pull rod (8) is fixed on the side wall of the sliding block plate (7), a plurality of groups of steel band rings (11) are arranged on the inner side of the drying bin (1) at longitudinal intervals, the plurality of groups of steel band rings (11) are connected through a lower driving mechanism, a scraping plate body (22) is arranged above the inner groove of each steel band ring (11), bin body sliding rods (21) are fixed on two sides of each scraping plate body (22), the bottommost part of each bin body sliding rod (21) and the bottommost part of each scraping plate body (22) are at the same horizontal height, an adjusting main bin (20) is attached to the outer wall below the two groups of bin sliding rods (21) in a sliding mode, main bin connecting rods (23) are fixedly installed on opposite surfaces of the two groups of adjusting main bins (20), outer side walls of the steel band rings (11) and rolling balls (14) and inner rolling grooves (15) which move in the groove are arranged on the inner side walls, and rolling balls (32) which move in the outer rolling grooves are arranged on the inner side walls of the two groups of the adjusting main bins (20);

the utility model discloses a shovel steel belt ring (11) for the automobile, including the inside wall bottom mounting of front shroud (4) have electric putter (36), the output lateral wall of electric putter (36) is installed and is had shovel board (33) of the same quantity with steel belt ring (11), is fixed with shovel curb plate (35) between shovel board (33) and electric putter (36), the front end of steel belt ring (11) is provided with butt joint platform (38), and the front end of shovel board (33) passes through torsion spring and connects shovel piece (34).

2. The tobacco leaf dryer of claim 1, wherein: the driving mechanism comprises a driving motor (9), a motor shaft rod (10) and a ring body connecting rod (13), wherein a base of the driving motor (9) is fixed on the upper end face of the slider plate (7), the motor shaft rod (10) is fixed at the output end of the driving motor (9), and the ring body connecting rod (13) is fixed at the top of the motor shaft rod (10) and fixed with the bottom of the steel belt ring (11).

3. The tobacco leaf dryer of claim 1, wherein: one side of a base of the drying bin (1) is provided with a functional upright post (17), a side groove of the sliding block plate (7) is provided with a ball screw (18) used for driving the adjusting main bin (20) to move longitudinally, and the side wall of the bottom end of the adjusting main bin (20) is provided with a connecting reinforcing rod (19) connected with the ball screw (18).

4. The tobacco leaf dryer according to claim 1, characterized in that: the end face, close to the bin body sliding rod (21), of the adjusting main bin (20) is longitudinally provided with scale marks (25), and the side wall of the bottom end of the bin body sliding rod (21) is provided with a marking plate (24).

5. The tobacco leaf dryer of claim 1, wherein: the surface of the adjusting main bin (20) is provided with a manual adjusting mechanism which drives the bin body sliding rod (21) to move longitudinally at the side part of the adjusting main bin (20).

6. The tobacco leaf dryer of claim 5, wherein: manual adjustment mechanism includes adjusting roller (26), spacing roller (27), spacing inserted bar (28), spacing groove (29), vertical regulating plate (31) and drive fluted disc (39), the surface of adjusting main storehouse (20) is seted up in spacing groove (29), adjusting roller (26) set up in the surface of adjusting main storehouse (20) and the annular of spacing groove (29) is inboard, spacing roller (27) laminate in the outer wall of adjusting roller (26), spacing inserted bar (28) are fixed in spacing roller (27) are close to the terminal surface of adjusting main storehouse (20), vertical regulating plate (31) laminate in storehouse body slide bar (21) are close to the lateral wall of adjusting main storehouse (20) surface spout, drive fluted disc (39) are fixed in adjusting roller (26) and extend to the inside front end of adjusting main storehouse (20), drive fluted disc (39) are connected with vertical regulating plate (31) meshing, and spacing inserted bar (28) diameter coincide with the size of spacing groove (29), spacing roller (27) are through the horizontal surface removal of adjusting roller (26) of annular inner wall.

7. The tobacco leaf dryer of claim 1, wherein: a blocking plate (5) capable of moving longitudinally is arranged at the opening at the side part of the drying bin (1).

8. The tobacco leaf dryer according to claim 1, characterized in that: an auxiliary ball (37) with the same size as the main rolling ball (32) is fixed at one end of the shovel side plate (35) far away from the shovel plate (33).

9. The tobacco leaf dryer of claim 1, wherein: a groove-shaped groove body (30) is arranged at the central part of the surface of the butt joint platform (38), and operation parts (16) are arranged at the positions close to the two ends of the steel belt ring (11) with an annular structure.