阅读说明：本技术 一种多点进风式稠浆法制备再造烟叶的装置及其操作方法 (Device for preparing reconstituted tobacco by multi-point air inlet type thick pulp method and operation method thereof ) 是由 田永峰 董高峰 *** 王昆淼 段沅杏 朱瑞芝 赵伟 司晓喜 张霞 巩效伟 王程 于 2019-11-11 设计创作，主要内容包括：本发明公开了一种多点进风式稠浆法制备再造烟叶的装置,该装置依次包括原料储料罐(1)、成型干燥装置(2)、剥离装置(3)和收卷装置(4),本发明装置具有多个热风风机(271<Sub>i</Sub>),每个所述热风风机(271<Sub>i</Sub>)连接一个沿垂直于所述成型钢带(21)方向朝向所述成型钢带(21)延伸的通风管(272<Sub>i</Sub>),每个所述通风管(272<Sub>i</Sub>)的管口(273<Sub>i</Sub>)吹出的热风方向与再造烟叶的运行方向之间的角度为90-180°,每个热风风机吹出的热风温度、热风量可以独立进行调节。本发明装置可对加热不燃烧卷烟用再造烟叶进行成型、干燥并制备成样品,为加热不燃烧卷烟的研究提供支撑。(The invention discloses a device for preparing reconstituted tobacco by a multi-point air inlet type thick pulp method, which sequentially comprises a raw material storage tank (1), a forming and drying device (2), a stripping device (3) and a winding device (4), and the device is provided with a plurality of hot air fans (271) i ) Each of the hot air blower (271) i ) A ventilation pipe (272) extending towards the profiled steel strip (21) in a direction perpendicular to the profiled steel strip (21) is connected i ) Each of said air ducts (272) i ) Nozzle (273) i ) The angle between the direction of the blown hot air and the running direction of the reconstituted tobacco is 90-180 degrees, and the temperature and the amount of the hot air blown by each hot air fan can be independently adjusted. The device can mold and dry reconstituted tobacco for the cigarette which is not combusted by heating and prepare a sample, and provides support for the research of the cigarette which is not combusted by heating.)

1. A device for preparing reconstituted tobacco by a multi-point air inlet type thick pulp method is characterized by sequentially comprising a raw material storage tank (1), a forming and drying device (2), a stripping device (3) and a winding device (4);

the forming and drying device (2) comprises a forming steel belt (21), an infrared heating plate (24), a feeding pump (22), a head box (23), a moisture discharge port (25), a temperature and humidity detector (26), drying equipment (27) and an outer cover (28) which are sequentially arranged;

the feeding pump (22) is connected with the raw material storage tank (1) and is used for conveying slurry to the forming and drying device (2);

the headbox (23) is located above the forming steel belt (21), the headbox (23) comprising a stock outlet (231) and a stock scraper (232);

the infrared heating plate (24) is positioned below the formed steel strip (21) and is used for heating the formed steel strip (21);

the forming steel belt (21) carries reconstituted tobacco to move towards the stripping unit (3);

the drying device (27) comprises a temperature and humidity sensor(26) N hot air fans (271) arranged from one side to one side of the stripping device (3) in sequence_i) N is more than or equal to 2, i is the number of the hot air fan from the temperature and humidity detector (26), and i is a positive integer from 1 to N; each of the hot air blower (271)_i) A ventilation pipe (272) extending towards the profiled steel strip (21) in a direction perpendicular to the profiled steel strip (21) is connected_i) Each of said air ducts (272)_i) Nozzle (273)_i) The angle between the direction of the blown hot air and the running direction of the reconstituted tobacco is 90-180 degrees, and the ventilation pipe (272) increases along with the increase of i_i) Nozzle (273)_i) The angle between the blown hot air direction and the running direction of the reconstituted tobacco is gradually reduced;

the peeling unit (3) includes a peeling blade (32) and a thickness adjusting roller (31); the thickness adjusting roller (31) comprises an upper pressing roller (311) and a lower supporting roller (312);

the winding unit (4) comprises a winding table (41) and a winding shaft (42).

2. The device of claim 1, wherein the nozzle (273) increases with i_i) The distance from the formed steel strip (21) is gradually reduced.

3. The device according to claim 1, characterized in that each of said ventilation ducts (272) increases with i_i) Nozzle (273)_i) The temperature and the air quantity of the blown hot air are gradually reduced.

4. A method of operating the device of claim 1, comprising the steps of:

a. starting a feed pump (22) to convey the slurry in the raw material storage tank (1) to a head box (23), and automatically adding the slurry according to the set liquid level height;

b. starting a forming steel belt (21) to horizontally run, starting an infrared heating plate (24) to heat the forming steel belt (21), setting the temperature of the forming steel belt (21) to be 30-50 ℃, controlling the slurry in a head box (23) to flow out from a slurry outlet (231) through a slurry scraper (232) after the temperature of the forming steel belt (21) reaches the set temperature, and drying the flowing slurry through the forming steel belt (21) to form a slurry film;

c. according to the set temperature of the hot air, a hot air fan (271) is started_i) Each hot air blower (271)_i) A ventilation pipe (272) extending towards the profiled steel strip (21) along a direction perpendicular to the profiled steel strip (21) is connected_i) Each of said air ducts (272)_i) Nozzle (273)_i) The angle between the direction of the blown hot air and the running direction of the reconstituted tobacco is 90-180 degrees, and the ventilation pipe (272) increases along with the increase of i_i) Nozzle (273)_i) The angle between the blown hot air direction and the running direction of the reconstituted tobacco is gradually reduced, and the serosa runs to the stripping device (3) along with the forming steel belt (21) and passes through the pipe orifice (273)_i) Drying the blown hot air to form reconstituted tobacco;

d. the moisture discharge port (25) is a hot air outlet, the temperature and moisture content of the surface of the serosa are measured in real time by the temperature and moisture detector (26), and each hot air fan (271) is adjusted according to the temperature and moisture content of the surface of the serosa_i) The hot air quantity and the hot air temperature and the opening degree of the moisture exhaust port (25) are controlled to ensure that the moisture content of the reconstituted tobacco on one side of the forming steel belt (21) close to the stripping unit (3) is 12-14 percent;

e. the reconstituted tobacco on one side, close to the stripping unit (3), of the forming steel belt (21) is stripped from the forming steel belt (21) by a stripping scraper (32), the thickness of the stripped reconstituted tobacco is adjusted by a thickness adjusting roller (31), and when the thickness of the reconstituted tobacco is larger than a set thickness, an upper pressing roller (311) and a lower supporting roller (312) of the thickness adjusting roller (31) are matched with each other to roll the reconstituted tobacco;

f. the reconstituted tobacco with the adjusted thickness is conveyed to a winding table (41) and wound on a winding shaft (42) for winding.

Technical Field

The invention belongs to the technical field of reconstituted tobacco production and processing, and particularly relates to a device for preparing reconstituted tobacco by a multi-point air inlet type thick slurry method and an operation method thereof.

Background

With the acceleration of global tobacco control movement, the global tobacco industry enters a new period of seeking revolution and breakthrough, and further promotes and accelerates the research and development of novel tobacco products, such as heating non-combustion cigarettes, electronic cigarettes, buccal cigarettes and the like. The cigarette is an important component of the novel tobacco product.

Compared with the granular and traditional tobacco shreds as tobacco section materials, the reconstituted tobacco leaves have the characteristics of stronger plasticity, homogenization and higher adjustable level while keeping the active ingredients of the natural tobacco leaves, so the reconstituted tobacco leaves are one of the main tobacco section materials for heating non-combustible cigarettes at present.

When the tobacco sheet is formed by the thick pulp method, the tobacco raw material powder, the adhesive, the smoke agent and other materials are uniformly distributed on the surface layer and the inner layer of the tobacco sheet, so that the thickness and quantitative stability, the heat conduction uniformity and the smoke effect of the tobacco sheet are better, and the tobacco sheet is one of the main reasons for being a tobacco section material of a cigarette which is not combusted by heating. Such as: the iQOS cigarette developed by Felmo tobacco company adopts orderly arranged thick pulp method to reproduce tobacco leaves.

Disclosure of Invention

The invention provides a device for preparing reconstituted tobacco by a multipoint air inlet type thick pulp method, which sequentially comprises a raw material storage tank 1, a forming and drying device 2, a stripping device 3 and a winding device 4;

the forming and drying device 2 comprises a forming steel belt 21, an infrared heating plate 24, a feeding pump 22, a head box 23, a moisture outlet 25, a temperature and humidity detector 26, a drying device 27 and an outer cover 28 which are sequentially arranged;

the feeding pump 22 is connected with the raw material storage tank 1 and is used for conveying slurry to the forming and drying device 2;

the headbox 23 is positioned above the forming steel belt 21, the headbox 23 comprising a stock outlet 231 and a stock scraper 232;

the infrared heating plate 24 is positioned below the formed steel strip 21 and used for heating the formed steel strip 21;

the forming steel belt 21 carries the reconstituted tobacco to move to the stripping unit 3;

the drying device 27 includes N hot air blowers 271 arranged in sequence from the temperature/humidity detector 26 side to the peeling device 3 side_iN is greater than or equal to 2, i is the number of the hot air blower from the temperature and humidity detector 26, and i is a positive integer from 1 to N; each of the hot air blower 271_iA ventilation pipe 272 extending in a direction perpendicular to the direction of the profiled steel strip 21 towards the profiled steel strip 21 is connected_iEach of the vent tubes 272_i273 of_iThe angle between the blown hot air direction and the running direction of the reconstituted tobacco is 90-180 degrees, and as i increases, the ventilation pipe 272_i273 of_iThe angle between the direction of the blown hot air and the running direction of the reconstituted tobacco is gradually reduced, one side close to the temperature and humidity detector 26 is the drying initial stage of the slurry forming a slurry film, in the drying initial stage, the moisture content in the slurry is high, a large amount of hot air is needed to take away the moisture in the slurry, at the moment, if the air quantity is large, and the wind direction is vertical to the direction of the slurry, the thickness of the slurry film formed by the slurry is inconsistent, the slurry film close to the ventilation opening is thin, the slurry film far away from the ventilation opening is thick, even the slurry is blown to the broken part and leaked, and the quality of the reconstituted tobacco sheet is seriously influenced, so when the minimum value is taken by the ventilation pipe 272, the ventilation pipe 272 is used_i273 of_iThe angle between the blown hot air direction and the running direction of the reconstituted tobacco is the largest, preferably 180 degrees, namely the hot air direction is completely opposite to the running direction of the reconstituted tobacco; the reconstituted tobacco sheet close to the stripping device 3 is preliminarily formed, the leveling property is poor, and in the drying stage, the reconstituted tobacco has low moisture content and is relatively difficult to dry, so when the maximum value is taken in the invention, the ventilation pipe 272 is provided_i273 of_iThe angle between the blown hot air direction and the running direction of the reconstituted tobacco is the minimum, preferably 90 degrees, namely the hot air direction is vertical to the running direction of the reconstituted tobacco, in the drying stage, the reconstituted tobacco sheet has less water content, a large amount of hot air is not needed, and only a mode of blowing air vertical to the reconstituted tobacco sheet is adopted, so that the drying efficiency is improved; when i takes an intermediate value, this angle being between 90 ° and 180 °, the ventilation tube 272_i273 of_iThe blown hot air can provide hot air flow perpendicular to the reconstituted tobacco to the surface of the reconstituted tobacco while drying the reconstituted tobacco reversely so as to increase the drying rate of the reconstituted tobacco, so when i takes an intermediate value, i is more preferablyThe angle between the hot air direction and the moving direction of the reconstituted tobacco is 120-150 degrees, and the expression of the angle between the two directions (the hot air direction and the moving direction of the reconstituted tobacco) is the same as the expression method of the angle between the two vectors in the common knowledge.

The peeling unit 3 includes a peeling blade 32 and a thickness adjusting roller 31; the thickness adjusting roller 31 includes an upper pressing roller 311 and a lower supporting roller 312;

the winding unit 4 includes a winding table 41 and a winding shaft 42.

Preferably, the orifice 273 increases as i increases_iThe distance from the profiled steel strip 21 decreases gradually.

Preferably, each of said ventilation ducts 272 increases with i_i273 of_iThe temperature and the air quantity of the blown hot air are gradually reduced.

The invention provides a forming and drying method for preparing reconstituted tobacco by a multipoint air inlet type thick paste method, which comprises the following steps:

a. starting a feed pump 22 to convey the uniformly stirred slurry in the raw material storage tank 1 to a head box 23, and automatically adding the slurry according to the set liquid level height;

b. starting the forming steel belt 21 to horizontally rotate, starting the infrared heating plate 24 to heat the forming steel belt 21, setting the temperature of the forming steel belt 21 to be 30-50 ℃, controlling the slurry in the head box 23 to flow out from the slurry outlet 231 through the slurry scraper 232 after the temperature of the forming steel belt 21 reaches the set temperature of 30-50 ℃, starting coating and forming, and drying the flowing slurry through the forming steel belt 21 to form a slurry film;

c. according to the set temperature of the hot air, the hot air fan 271 is started_iEach of the hot air blower 271_iA ventilation pipe 272 extending in a direction perpendicular to the profiled steel strip 21 towards the profiled steel strip 21 is connected_iEach of the vent tubes 272_i273 of_iThe angle between the direction of the blown hot air and the running direction of the reconstituted tobacco is 90-180 degrees, and the ventilation pipe (272) increases along with the increase of i_i) Nozzle (273)_i) The angle between the direction of the blown hot air and the direction of travel of the reconstituted tobaccoGradually reduced, and the serosa moves along with the formed steel strip 21 to the stripping device 3 and passes through the pipe orifice 273_iDrying the blown hot air to form reconstituted tobacco;

d. the moisture discharge port 25 is a hot air outlet, the temperature and moisture detector 26 measures the temperature and moisture content of the surface of the serosa in real time, and the hot air fan 271 is adjusted according to the temperature and moisture content of the surface of the serosa_iThe hot air quantity and the hot air temperature and the opening degree of the moisture discharge port 25 are controlled so that the moisture content of the reconstituted tobacco on the side, close to the stripping unit 3, of the forming steel belt 21 is 12-14%;

e. the stripping scraper 32 strips the reconstituted tobacco on one side, close to the stripping unit 3, of the forming steel belt 21 from the forming steel belt 21, the stripped reconstituted tobacco is subjected to thickness adjustment through the thickness adjusting roller 31, and if the thickness of the reconstituted tobacco is larger than the set thickness, an upper pressing roller 311 and a lower supporting roller 312 of the thickness adjusting roller 31 are matched with each other to roll the reconstituted tobacco;

f. the reconstituted tobacco after thickness adjustment is conveyed to a winding table 41 and wound on a winding shaft 42 for manual winding.

And after the rolling is finished, repeating the processes to prepare the reconstituted tobacco sample for the next time.

Compared with the prior art, the invention has the following beneficial effects:

1. the inventive device has a plurality of hot air blowers 271_iThe temperature and the hot air quantity of the hot air blown out by each hot air fan can be independently adjusted according to the temperature and the moisture content data of the serosa surface measured by the temperature and humidity detector 26 in real time, so that the problem that the drying conditions in different drying stages are difficult to coordinate is solved. The device can mold and dry the reconstituted tobacco for the heating non-combustion cigarette and prepare the sample, meets the preparation requirement of the reconstituted tobacco for the heating non-combustion cigarette, and provides support for the research of heating non-combustion cigarette.

2. The drying equipment 27 of the device comprises N hot air fans 271 which are sequentially arranged from one side of the temperature and humidity detector 26 to one side of the peeling device 3_iN is greater than or equal to 2, i is the number of the hot air blower from the temperature and humidity detector 26, and i is a positive integer from 1 to N; each of the hot air blower 271_iA ventilation pipe 272 extending in a direction perpendicular to the profiled steel strip 21 towards the profiled steel strip 21 is connected_iEach of the vent tubes 272_i273 of_iThe angle between the blown hot air direction and the running direction of the reconstituted tobacco is 90-180 degrees, and as i increases, the ventilation pipe 272_i273 of_iThe angle between the direction of the blown hot air and the running direction of the reconstituted tobacco is gradually reduced, one side close to the temperature and humidity detector 26 is the drying initial stage of the slurry forming a slurry film, in the drying initial stage, the moisture content in the slurry is high, a large amount of hot air is needed to take away the moisture in the slurry, at the moment, if the air quantity is large, and the wind direction is vertical to the direction of the slurry, the thickness of the slurry film formed by the slurry is inconsistent, the slurry film close to the ventilation opening is thin, the slurry film far away from the ventilation opening is thick, even the slurry is blown to the broken part and leaked, and the quality of the reconstituted tobacco sheet is seriously influenced, so when the minimum value is taken by the ventilation pipe 272, the ventilation pipe 272 is used_i273 of_iThe angle between the blown hot air direction and the running direction of the reconstituted tobacco is the largest and is 180 degrees, namely the hot air direction is completely opposite to the running direction of the reconstituted tobacco; the reconstituted tobacco sheet close to the stripping device 3 is preliminarily formed, the leveling property is poor, and in the drying stage, the reconstituted tobacco has low moisture content and is relatively difficult to dry, so when the maximum value is taken in the invention, the ventilation pipe 272 is provided_i273 of_iThe angle between the blown hot air direction and the running direction of the reconstituted tobacco is the minimum and is 90 degrees, namely the hot air direction is vertical to the running direction of the reconstituted tobacco, in the drying stage, the reconstituted tobacco sheet has less water content, a large amount of hot air is not needed, and only a mode of blowing air vertical to the reconstituted tobacco sheet is adopted, so that the drying efficiency is improved; when i takes an intermediate value, this angle being between 90 ° and 180 °, the ventilation tube 272_i273 of_iThe blown hot air can reversely dry the reconstituted tobacco and provide hot air flow vertical to the surface of the reconstituted tobacco so as to improve the drying rate of the reconstituted tobacco, so that when i takes an intermediate value, the direction of the hot air and the reconstituted tobacco are in the same directionThe angle between the travel directions of the leaves was 120-150 °.

3. In a preferred embodiment of the invention, the orifice 273 increases with i_iThe distance from the profiled steel strip 21 is gradually reduced if all the nozzles 273 are arranged during the drying process_iThe same distance from the profiled steel strip 21 results in all the nozzles 273_iThe hot air blown out is on a horizontal layer which is closer to the formed steel strip 21, after a period of drying, the hot air on the layer is saturated in moisture, the air above the layer cannot play a role in drying, meanwhile, the moisture content of the slurry in the later stage of drying is low, and the slurry is not easy to dry, but the pipe orifice 273 of the device is adopted_iThe distance from the profiled steel strip 21 is gradually reduced, and the nozzle 273_iThe blown hot air forms different hot air horizontal layers in the outer cover 29, the air utilization rate is high, the closer to the termination end of the forming steel belt 21, the closer the hot air is to the reconstituted tobacco, and the drying effect of the reconstituted tobacco at the later drying stage is effectively improved.

4. In a preferred embodiment of the present invention, each of said ventilation tubes 272 increases with i_i273 of_iThe temperature and the quantity of the hot air blown out gradually decrease, that is, the quantity of the hot air above the pulp film is large in the early stage of drying and the vent tube 272_i273 of_iThe angle between the blown hot air direction and the running direction of the reconstituted tobacco is 180 degrees, the hot air quantity above the reconstituted tobacco in the later stage of drying is small, and the ventilation pipe 272_i273 of_iThe angle between the direction of the blown hot air and the running direction of the reconstituted tobacco is 90 degrees, so that the utilization efficiency of the hot air can be improved, and the drying effect of the drying later stage of the reconstituted tobacco is ensured under the condition that the serous membrane at the drying initial stage of the reconstituted tobacco is prevented from being blown by the hot air.

Drawings

FIG. 1 is a schematic view of a prior art incremental hot air counter-current drying apparatus;

FIG. 2 is a schematic view of a device for preparing reconstituted tobacco by a multi-point air inlet type thick liquid method.

Wherein, the names of all the reference symbols in the description of the drawings are as follows: 1-raw material storage tank and 2-forming dryThe device comprises a drying device, a 3-stripping device, a 4-winding device, a 5-conveying belt, a 6-ventilation tunnel, a 7-air supply pipeline, an 8-air outlet, a 21-formed steel belt, a 22-feed pump, a 23-pulp flow box, a 24-infrared heating plate, a 25-moisture exhaust port, a 26-temperature and humidity detector, a 27-drying device, a 28-outer cover, a 31-thickness adjusting roller, a 32-stripping scraper, a 41-winding table, a 42-winding shaft, and a 271_iHot air blower, 272_i-ventilation ducts, 273_iNozzle, 1111-first vent, 2222-second vent, 3333-third vent, 4444-fourth vent.

Detailed Description

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

The embodiment is a device for preparing reconstituted tobacco by a multipoint air inlet type thick pulp method, which sequentially comprises a raw material storage tank 1, a forming and drying device 2, a stripping device 3 and a winding device 4;

the forming and drying device 2 comprises a forming steel belt 21, an infrared heating plate 24, a feeding pump 22, a head box 23, a moisture outlet 25, a temperature and humidity detector 26, a drying device 27 and an outer cover 28 which are sequentially arranged;

the feeding pump 22 is connected with the raw material storage tank 1 and is used for conveying slurry to the forming and drying device 2;

the headbox 23 is positioned above the forming steel belt 21, the headbox 23 comprising a stock outlet 231 and a stock scraper 232;

the infrared heating plate 24 is positioned below the formed steel strip 21 and used for heating the formed steel strip 21;

the forming steel belt 21 carries the reconstituted tobacco to move to the stripping unit 3;

the drying device 27 includes 3 hot air blowers 271 sequentially arranged from the temperature and humidity detector 26 side to the peeling device 3 side_iI is a hot air blower number from the temperature and humidity detector 26, and i is from 1 to 3A positive integer; each of the hot air blower 271_iA ventilation pipe 272 extending in a direction perpendicular to the profiled steel strip 21 towards the profiled steel strip 21 is connected_iAir vent tube 272₁273 of₁The angle between the blown hot air direction and the running direction of the reconstituted tobacco is 180 degrees, namely the hot air direction is completely opposite to the running direction of the reconstituted tobacco; vent tube 272₂273 of₂The angle between the direction of the blown hot air and the running direction of the reconstituted tobacco is 150 degrees, and the vent pipe 272₂273 of₂The blown hot air can reversely dry the reconstituted tobacco and provide hot air flow vertical to the reconstituted tobacco to the surface of the reconstituted tobacco so as to improve the drying rate of the reconstituted tobacco; vent tube 272₃273 of₃The angle between the blown hot air direction and the running direction of the reconstituted tobacco is 90 degrees, namely the hot air direction is vertical to the running direction of the reconstituted tobacco;

the peeling unit 3 includes a peeling blade 32 and a thickness adjusting roller 31; the thickness adjusting roller 31 includes an upper pressing roller 311 and a lower supporting roller 312;

the winding unit 4 includes a winding table 41 and a winding shaft 42.

As i increases, the orifice 273_iThe distance from the profiled steel strip 21 is gradually reduced, wherein the nozzle 273₁At a distance of 70cm from the profiled steel strip 21, at a nozzle 273₂At a distance of 45cm from the formed steel strip, and a nozzle 273₃The distance from the profiled steel strip was 10 cm.

As i increases, each of the vent tubes 272_i273 of_iThe temperature and the air quantity of the blown hot air are gradually increased.

The device for preparing the reconstituted tobacco by the multipoint air inlet type thick paste method has the following operation process:

before the device is started, according to the development requirement of preparing the reconstituted tobacco sample for the heating non-combustible cigarette by a thick paste method, the thickness and the moisture of the sample are set at first.

The operation method of the device for preparing the reconstituted tobacco by the multi-point air inlet type thick pulp method comprises the following steps:

a. starting a feed pump 22 to convey the uniformly stirred slurry in the raw material storage tank 1 to a head box 23, and automatically adding the slurry according to the set liquid level height;

b. starting the forming steel belt 21 to horizontally rotate, starting the infrared heating plate 24 to heat the forming steel belt 21, setting the temperature of the forming steel belt 21 to be 40 ℃, controlling the slurry in the head box 23 to flow out from the slurry outlet 231 through the slurry scraper 232 after the temperature of the forming steel belt 21 reaches the set temperature of 40 ℃, starting coating and forming, and drying the flowing slurry through the forming steel belt 21 to form a slurry film;

c. setting hot air blower 271₁The hot air temperature is 105 ℃, and the hot air volume is 3500m³Min, set the hot air blower 271₂The hot air temperature is 100 ℃, and the hot air quantity is 3000m³Min, set the hot air blower 271₃The hot air temperature is 90 ℃, and the hot air quantity is 2500m³Min, turn on the hot air blower 271₁、271₂、271₃Each of the hot air blower 271_iA ventilation pipe 272 extending in a direction perpendicular to the profiled steel strip 21 towards the profiled steel strip 21 is connected_iAir vent tube 272₁273 of₁The angle between the blown hot air direction and the running direction of the reconstituted tobacco is 180 degrees, namely the hot air direction is completely opposite to the running direction of the reconstituted tobacco; vent tube 272₂273 of₂The angle between the direction of the blown hot air and the running direction of the reconstituted tobacco is 150 degrees, and the vent pipe 272₂273 of₂The blown hot air can reversely dry the reconstituted tobacco and provide hot air flow vertical to the reconstituted tobacco to the surface of the reconstituted tobacco so as to improve the drying rate of the reconstituted tobacco; vent tube 272₃273 of₃The angle between the blown hot air direction and the running direction of the reconstituted tobacco is 90 degrees, namely the hot air direction is vertical to the running direction of the reconstituted tobacco; the serosa runs along with the formed steel strip 21 to the stripping device 3 and passes through the pipe orifice 273_iDrying the blown hot air to form reconstituted tobacco;

d. the moisture outlet 25 is a hot air outlet and a temperature and humidity detector26 measuring the temperature and the moisture content of the surface of the pulp film in real time, and properly adjusting the hot air blower 271 according to the temperature and the moisture content of the surface of the pulp film_iThe hot air quantity and the hot air temperature and the opening degree of the moisture discharge port 25 are controlled so that the moisture content of the reconstituted tobacco on the side, close to the stripping unit 3, of the forming steel belt 21 is 12-14%;

e. the stripping scraper 32 strips the reconstituted tobacco on one side, close to the stripping unit 3, of the forming steel belt 21 from the forming steel belt 21, the stripped reconstituted tobacco is subjected to thickness adjustment through the thickness adjusting roller 31, and if the thickness of the reconstituted tobacco is larger than the set thickness +/-0.3 mm, an upper pressing roller 311 and a lower supporting roller 312 of the thickness adjusting roller 31 are matched with each other to roll the reconstituted tobacco;

f. the reconstituted tobacco after thickness adjustment is conveyed to a winding table 41 and wound on a winding shaft 42 for manual winding.

And after the rolling is finished, repeating the processes to prepare the reconstituted tobacco sample for the next time.