CN110897190A - Production process of tobacco sheets by rolling method - Google Patents
Production process of tobacco sheets by rolling method Download PDFInfo
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- CN110897190A CN110897190A CN201911194337.XA CN201911194337A CN110897190A CN 110897190 A CN110897190 A CN 110897190A CN 201911194337 A CN201911194337 A CN 201911194337A CN 110897190 A CN110897190 A CN 110897190A
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
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Abstract
A rolling method tobacco sheet production process comprises the following steps: step 1, a raw material pretreatment stage, wherein the raw material pretreatment stage is used for carrying out coarse crushing and drying treatment on large tobacco leaves and tobacco stems and preparing for fine crushing in the later period; step 2, crushing the raw materials; step 3, a proportioning, homogenizing and mixing stage; step 4, multi-stage rolling section, namely, the sheet is thinned step by step through multi-stage rolling, so that the quantification and the tensile strength of the sheet meet the index requirements; step 5, a low-temperature drying section for the thin slices, wherein the thin slices are heated by steam and dried at low temperature; and 6, molding, namely winding or slicing and shredding the molded sheets. The invention aims to solve the technical problems that the sheet quantification in the traditional rolling process cannot reach the index, the tensile strength is low, and the sheet is volatile when the sheet is not burnt at low temperature.
Description
Technical Field
The invention belongs to the technical field of tobacco and production processing, and particularly relates to a tobacco sheet production process by a rolling method.
Background
In the tobacco production and processing, the production process of the tobacco sheets by the rolling method is mature, but the traditional rolling method process can not meet the requirements aiming at the technical indexes of novel tobacco raw materials, and in order to solve the problem, the invention provides the novel process of the novel tobacco rolling method.
Disclosure of Invention
The invention aims to solve the technical problems that the sheet quantification in the traditional rolling process cannot reach the index, the tensile strength is low, and the sheet is volatile when the sheet is not burnt at low temperature.
A rolling method tobacco sheet production process comprises the following steps:
step 1, a raw material pretreatment stage, wherein the raw material pretreatment stage is used for carrying out coarse crushing and drying treatment on large tobacco leaves and tobacco stems and preparing for fine crushing in the later period;
step 2, crushing the raw materials;
step 3, a proportioning, homogenizing and mixing stage;
step 4, multi-stage rolling section, namely, the sheet is thinned step by step through multi-stage rolling, so that the quantification and the tensile strength of the sheet meet the index requirements;
step 5, a low-temperature drying section for the thin slices, wherein the thin slices are heated by steam and dried at low temperature;
and 6, molding, namely winding or slicing and shredding the molded sheets.
In step 2, the raw material is pulverized by a refrigerant type and air cooling type pulverizer, which comprises a spiral feed, an air cooling inlet, a lower box body, a pulverizing belt wheel, a middle box body, a pulverizing millstone, an inner fixed gear ring, a grinding block, a grading belt wheel, a grading impeller, a flow distribution ring, a discharge port and a cooling supply system, and the method comprises the following steps when the refrigerant type and air cooling type pulverizer is used for pulverizing:
step 1), feeding the coarse powder into a crushing bin by a screw feeder in a timed and quantitative manner by driving a screw conveying screw by a motor to crush;
step 2) cold air is sent into the lower box body through a cold air inlet by a cooling supply system, the cold air enters the middle box body from the lower box body, and the crushing rotating shaft and the crushing inner wall are cooled, so that the physical characteristics of raw materials are prevented from being damaged by high temperature generated in the crushing process, and the effect is better compared with the traditional water cooling mode;
step 3) providing power for the grinding rotating shaft through the grinding belt wheel to drive the grinding disc to rotate at a high speed, matching the inner fixed gear ring and the grinding block to grind the raw materials, striking and rotating the ground particles at a high speed to make the ground particles strike the inner fixed gear ring and the grinding block, and grinding the ground particles by virtue of ultra-strong impact force to realize a novel tobacco ultra-micro grinding process;
and 4) the grading belt wheel drives the grading impeller to rotate, crushed particles are flied, the particles are screened in the rotating process by matching with the shunt ring, the particles meeting the requirements are conveyed to the discharge hole by the wind power of cold air, and the particles not meeting the particle size requirements fall into the crushing bin again under the influence of insufficient wind power for secondary crushing until the certain particle size requirement is met.
In step 4, adopt multistage rolling press device, it includes the upper feeding hopper, the frame, the scraper, overspeed device tensioner, feeder hopper down, goes up the initiative compression roller, goes up passive compression roller, lower initiative compression roller, lower passive compression roller, goes up the compression roller gap adjusting lever, lower compression roller gap adjusting lever, first gear motor, second gear motor, the conveyer belt, when using this multistage rolling press device to carry out the thin section and roll down step by step, adopts following step:
step 1) raw materials enter from an upper feeding hopper, and are simultaneously rotated by an upper driving compression roller and an upper driven compression roller through primary rolling treatment, the raw materials enter from a gap between the two compression rollers to realize extrusion, and the size of a rolling gap is adjusted by an upper compression roller gap adjusting rod;
step 2), conveying the sheet subjected to primary rolling into a lower feed hopper through a conveying belt, and then performing secondary rolling treatment to allow the raw material to enter from a gap between two lower pressing rollers to realize secondary extrusion;
and 3) feeding the twice rolled sheets into the next roller press by a conveyer belt, wherein the thickness of each level of rolled sheets is different, the thickness gradually decreases from thick to thin, and the rotating power of the press roller is respectively provided by a speed reducing motor 1 and a speed reducing motor 2.
In order to prevent the transmission chain from loosening in the motor drive, a tensioning device is designed for tensioning and adjusting. For preventing the raw materials adhesion on the compression roller, designed the scraper device of special construction, carry out the shovel to the clout of adhesion on the compression roller surface and scrape. The processing of the sheet is only the working principle of one roller press, the invention designs 6-level rolling processing, three roller presses work simultaneously, the working principle is the same, but the gap of each level of rolling processing is different, and finally the sheet rolled by the third roller press is subjected to 6-level rolling processing, so that the thickness required by the novel tobacco sheet manufacturing process is 0.2mm +/-0.05 mm.
In step 5, the rolled and formed sheet is conveyed into an oven through a conveyor belt, a novel drying technology is used, the content of glycerin in novel tobacco is considered to be high, the glycerin is heated and dried through steam in order to prevent the glycerin from volatilizing, the temperature is controlled to be 80-105 ℃, and the dried moisture reaches 5-10%. The dried slice has better strength and toughness effect, and improves the quality of the slice.
In the step 2, the coarsely crushed raw materials are finely crushed for the second time, in order to prevent the raw materials from being damaged by high temperature generated in the crushing process of the equipment, the raw materials are cooled in real time in a refrigerant mode, the granularity requirement of the powder generated by fine crushing is high, the granularity of the crushed powder is in normal distribution, the granularity range is DV (90) 250-300 meshes, and the technological requirement of the novel tobacco rolling method is fully met.
The structure of the above-mentioned refrigerant type and air-cooled pulverizer is: it is from lower extreme to upper end box down in proper order, well box, go up the box, be equipped with the air conditioning entry on the box down, from supreme rubbing crusher structure that is equipped with down in the well box, screening mechanism, still be equipped with feed mechanism on the well box, be equipped with the discharge gate on the last box, rubbing crusher structure is including smashing the mill, smash band pulley mechanism, abrasive brick and interior fixed ring gear, it includes crushing band pulley to smash band pulley mechanism, smash the rotation axis, it provides power to smash the rotation axis for to smash the band pulley, it carries out raw materials crushing to drive interior fixed ring gear of the high-speed rotatory cooperation of crushing mill and abrasive brick, it sets up in box down to smash the rotation axis, and smash the last connecting portion of.
Above-mentioned screening mechanism includes hierarchical band pulley, hierarchical impeller, the impeller rotation axis, hierarchical impeller sets up and is located crushing mill top in well box, the impeller rotation axis sets up in last box, the last connecting portion of impeller rotation axis, lower connecting portion respectively with hierarchical band pulley, the middle part of hierarchical impeller is connected, screening mechanism still includes the reposition of redundant personnel cup, hierarchical band pulley drives hierarchical impeller rotation, fly to empty crushing granule, and cooperation reposition of redundant personnel ring has carried out the screening to the granule at rotatory in-process, the granule that will satisfy the requirement is sent to the discharge gate to the wind-force of dependence cold air, the granule that does not satisfy the granularity requirement falls into again under the influence that wind-force is not enough and smashes the storehouse and carry out the regrinding.
The multi-stage rolling device comprises a frame, an upper feeding hopper, a first stage rolling mechanism, a second stage rolling mechanism and a driving mechanism are sequentially arranged on the frame from top to bottom, the first stage rolling mechanism comprises an upper driving compression roller and an upper driven compression roller, a rolling gap is arranged between the upper driving compression roller and the upper driven compression roller, a discharge port of the upper feeding hopper is positioned above the rolling gap between the upper driving compression roller and the upper driven compression roller, the first-stage roller pressing mechanism is provided with a first conveying belt, the feeding side of the first conveying belt is positioned below a rolling gap between an upper driving pressing roller and an upper driven pressing roller, the second-stage roller pressing mechanism comprises a lower driving pressing roller and a lower driven pressing roller, the discharging side of the first conveying belt is positioned above the gap between the lower driving pressing roller and the lower driven pressing roller, and the feeding side of the second conveying belt is positioned below the gap between the lower driving pressing roller and the lower driven pressing roller.
By adopting the technical scheme, the following technical effects can be brought:
1. by adopting the sheet manufacturing process, the problems of sheet quantification, tensile strength, low-temperature non-combustion volatility and the like are solved, the innovation of the current rolling method technology in the novel tobacco industry at home is realized, the innovation and the breakthrough of the new technology are realized, and the sheet manufacturing process has higher engineering significance and market value.
2. In order to ensure that the product meets the process requirements, the new process method is optimized and improved on a plurality of devices, including the optimization of the tobacco raw material crushing process and the upgrading and transformation of the devices, the optimization of the dry-wet material homogeneous mixing process and the upgrading and transformation of the devices, the optimization of the rolling forming process and the upgrading and transformation of the devices, the low-temperature drying process and the upgrading and transformation of the devices and the like, solves a plurality of problems existing in the traditional rolling method, and has great advantages in the field of novel tobacco raw material preparation.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic diagram of the structure of the refrigerant-type and air-cooled pulverizer of the present invention;
fig. 3 and 4 are schematic structural views of a multistage rolling device according to the present invention.
Detailed Description
As shown in fig. 1, a process for producing a rolled tobacco sheet comprises the following steps:
step 1, a raw material pretreatment stage, wherein the raw material pretreatment stage is used for carrying out coarse crushing and drying treatment on large tobacco leaves and tobacco stems and preparing for fine crushing in the later period;
step 2, crushing the raw materials;
step 3, a proportioning, homogenizing and mixing stage;
step 4, multi-stage rolling section, namely, the sheet is thinned step by step through multi-stage rolling, so that the quantification and the tensile strength of the sheet meet the index requirements;
step 5, a low-temperature drying section for the thin slices, wherein the thin slices are heated by steam and dried at low temperature;
and 6, molding, namely winding or slicing and shredding the molded sheets.
In step 2, a refrigerant type and air cooling type pulverizer is adopted to pulverize the raw materials, and the pulverizer comprises a spiral feed, a cold air inlet, a lower box body, a pulverizing belt wheel, a middle box body, a pulverizing millstone, an internal fixed gear ring, a grinding block, a grading belt wheel, a grading impeller, a shunting ring, a discharge hole and a cooling supply system;
the structure of the refrigerant type and air cooling type pulverizer is as follows: it is from lower extreme to upper end box down in proper order, well box, go up the box, be equipped with the air conditioning entry on the box down, from supreme rubbing crusher structure that is equipped with down in the well box, screening mechanism, still be equipped with feed mechanism on the well box, be equipped with the discharge gate on the last box, rubbing crusher structure is including smashing the mill, smash band pulley mechanism, abrasive brick and interior fixed ring gear, it includes crushing band pulley to smash band pulley mechanism, smash the rotation axis, it provides power to smash the rotation axis for to smash the band pulley, it carries out raw materials crushing to drive interior fixed ring gear of the high-speed rotatory cooperation of crushing mill and abrasive brick, it sets up in box down to smash the rotation axis, and smash the last connecting portion of.
Screening mechanism includes hierarchical band pulley, hierarchical impeller, the impeller rotation axis, hierarchical impeller sets up and is located crushing mill top in well box, the impeller rotation axis sets up in last box, the last connecting portion of impeller rotation axis, lower connecting portion respectively with hierarchical band pulley, the middle part of hierarchical impeller is connected, screening mechanism still includes the reposition of redundant personnel cup, hierarchical band pulley drives hierarchical impeller rotation, it soaks to smash the granule to beat, and cooperation reposition of redundant personnel ring has carried out the screening to the granule at rotatory in-process, the granule that will satisfy the requirement is sent to the discharge gate to the wind-force of dependence cold air, the granule that does not satisfy the granularity requirement falls into again under the influence that wind-force is not enough and smashes the storehouse and carry out the regrinding.
The method comprises the following steps when a refrigerant type pulverizer and an air cooling type pulverizer are used for pulverizing:
step 1), feeding the coarse powder into a crushing bin by a screw feeder in a timed and quantitative manner by driving a screw conveying screw by a motor to crush;
step 2) cold air is sent into the lower box body through a cold air inlet by a cooling supply system, the cold air enters the middle box body from the lower box body, and the crushing rotating shaft and the crushing inner wall are cooled, so that the physical characteristics of raw materials are prevented from being damaged by high temperature generated in the crushing process, and the effect is better compared with the traditional water cooling mode;
step 3) providing power for the grinding rotating shaft through the grinding belt wheel to drive the grinding disc to rotate at a high speed, matching the inner fixed gear ring and the grinding block to grind the raw materials, striking and rotating the ground particles at a high speed to make the ground particles strike the inner fixed gear ring and the grinding block, and grinding the ground particles by virtue of ultra-strong impact force to realize a novel tobacco ultra-micro grinding process;
and 4) the grading belt wheel drives the grading impeller to rotate, crushed particles are flied, the particles are screened in the rotating process by matching with the shunt ring, the particles meeting the requirements are conveyed to the discharge hole by the wind power of cold air, and the particles not meeting the particle size requirements fall into the crushing bin again under the influence of insufficient wind power for secondary crushing until the certain particle size requirement is met.
In step 4, adopt multistage rolling press device, it includes the upper feeding hopper, the frame, the scraper, overspeed device tensioner, feeder hopper down goes up the initiative compression roller, goes up passive compression roller, lower initiative compression roller, lower passive compression roller, goes up the compression roller gap adjusting lever, lower compression roller gap adjusting lever, gear motor, the conveyer belt, when using this multistage rolling press device to carry out the thin section and roll down step by step, adopts following step:
step 1) raw materials enter from an upper feeding hopper, and are simultaneously rotated by an upper driving compression roller and an upper driven compression roller through primary rolling treatment, the raw materials enter from a gap between the two compression rollers to realize extrusion, and the size of a rolling gap is adjusted by an upper compression roller gap adjusting rod;
step 2), conveying the sheet subjected to primary rolling into a lower feed hopper through a conveying belt, and then performing secondary rolling treatment to allow the raw material to enter from a gap between two lower pressing rollers to realize secondary extrusion;
and 3) feeding the twice rolled sheets into the next roller press by a conveyer belt, wherein the thickness of each stage of rolled sheets is different, the thickness gradually decreases from thick to thin, and the rotating power of the press roller is respectively provided by a first speed reducing motor and a second speed reducing motor.
In order to prevent the transmission chain from loosening in the motor drive, a tensioning device is designed for tensioning and adjusting. For preventing the raw materials adhesion on the compression roller, designed the scraper device of special construction, carry out the shovel to the clout of adhesion on the compression roller surface and scrape. The processing of the sheet is only the working principle of one roller press, the invention designs 6-level rolling processing, three roller presses work simultaneously, the working principle is the same, but the gap of each level of rolling processing is different, and finally the sheet rolled by the third roller press is subjected to 6-level rolling processing, so that the thickness required by the novel tobacco sheet manufacturing process is 0.2mm +/-0.05 mm.
In step 5, the rolled and formed sheet is conveyed into an oven through a conveyor belt, a novel drying technology is used, the content of glycerin in novel tobacco is considered to be high, the glycerin is heated and dried through steam in order to prevent the glycerin from volatilizing, the temperature is controlled to be 80-105 ℃, and the dried moisture reaches 5-10%. The dried slice has better strength and toughness effect, and improves the quality of the slice.
In the step 2, the coarsely crushed raw materials are finely crushed for the second time, in order to prevent the raw materials from being damaged by high temperature generated in the crushing process of the equipment, the raw materials are cooled in real time in a refrigerant mode, the granularity requirement of the powder generated by fine crushing is high, the granularity of the crushed powder is in normal distribution, the granularity range is DV (90) 250-300 meshes, and the technological requirement of the novel tobacco rolling method is fully met.
In the concrete structure of the multi-stage rolling device, the multi-stage rolling device comprises a frame, an upper feeding hopper, a first-stage rolling mechanism, a second-stage rolling mechanism and a driving mechanism are sequentially arranged on the frame from top to bottom, the first-stage rolling mechanism comprises an upper driving compression roller and an upper driven compression roller, a rolling gap is arranged between the upper driving compression roller and the upper driven compression roller, a discharge hole of the upper feeding hopper is positioned above the rolling gap between the upper driving compression roller and the upper driven compression roller, the first-stage roller pressing mechanism is provided with a first conveying belt, the feeding side of the first conveying belt is positioned below a rolling gap between an upper driving pressing roller and an upper driven pressing roller, the second-stage roller pressing mechanism comprises a lower driving pressing roller and a lower driven pressing roller, the discharging side of the first conveying belt is positioned above the gap between the lower driving pressing roller and the lower driven pressing roller, and the feeding side of the second conveying belt is positioned below the gap between the lower driving pressing roller and the lower driven pressing roller.
Claims (9)
1. A production process of a tobacco sheet by a rolling method is characterized by comprising the following steps:
step 1, a raw material pretreatment stage, wherein the raw material pretreatment stage is used for carrying out coarse crushing and drying treatment on large tobacco leaves and tobacco stems and preparing for fine crushing in the later period;
step 2, crushing the raw materials;
step 3, a proportioning, homogenizing and mixing stage;
step 4, multi-stage rolling section, namely, the sheet is thinned step by step through multi-stage rolling, so that the quantification and the tensile strength of the sheet meet the index requirements;
step 5, a low-temperature drying section for the thin slices, wherein the thin slices are heated by steam and dried at low temperature;
and 6, molding, namely winding or slicing and shredding the molded sheets.
2. The process for producing rolled tobacco sheets according to claim 1, wherein in the step 2, the raw material is pulverized by a refrigerant type and air-cooled pulverizer comprising a screw feeder, a cold air inlet, a lower casing, a pulverizing pulley, a middle casing, a pulverizing disk, an inner fixed ring gear, a grinding block, a classifying pulley, a classifying impeller, a flow distribution ring, a discharge port, and a cooling supply system, and the pulverizing by the refrigerant type and air-cooled pulverizer comprises the steps of:
step 1), feeding the coarse powder into a crushing bin by a screw feeder in a timed and quantitative manner by driving a screw conveying screw by a motor to crush;
step 2) cold air is sent into the lower box body through a cold air inlet by a cooling supply system, and the cold air enters the middle box body from the lower box body to cool the crushing rotating shaft and the crushing inner wall;
step 3) providing power for the crushing rotating shaft through the crushing belt wheel to drive the crushing grinding disc to rotate at a high speed, matching the inner fixed gear ring and the grinding block to crush raw materials, striking and rotating crushed particles at a high speed to make the crushed particles strike the inner fixed gear ring and the grinding block, and polishing and crushing by means of ultra-strong impact force;
and 4) the grading belt wheel drives the grading impeller to rotate, crushed particles are flied, the particles are screened in the rotating process by matching with the shunt ring, the particles meeting the requirements are conveyed to the discharge hole by the wind power of cold air, and the particles not meeting the particle size requirements fall into the crushing bin again under the influence of insufficient wind power for secondary crushing until the certain particle size requirement is met.
3. The rolled tobacco sheet production process according to claim 1, wherein: in step 4, adopt multistage rolling press device, it includes the upper feeding hopper, the frame, the scraper, overspeed device tensioner, feeder hopper down, goes up the initiative compression roller, goes up passive compression roller, lower initiative compression roller, lower passive compression roller, goes up the compression roller gap adjusting lever, lower compression roller gap adjusting lever, first gear motor, second gear motor, the conveyer belt, when using this multistage rolling press device to carry out the thin section and roll down step by step, adopts following step:
step 1) raw materials enter from an upper feeding hopper, and are simultaneously rotated by an upper driving compression roller and an upper driven compression roller through primary rolling treatment, the raw materials enter from a gap between the two compression rollers to realize extrusion, and the size of a rolling gap is adjusted by an upper compression roller gap adjusting rod;
step 2), conveying the sheet subjected to primary rolling into a lower feed hopper through a conveying belt, and then performing secondary rolling treatment to allow the raw material to enter from a gap between two lower pressing rollers to realize secondary extrusion;
and 3) feeding the twice rolled sheets into the next roller press by a conveyer belt, wherein the thickness of each stage of rolled sheets is different, the thickness gradually decreases from thick to thin, and the rotating power of the press roller is respectively provided by a first speed reducing motor and a second speed reducing motor.
4. The rolled tobacco sheet production process according to claim 3, wherein: the tobacco sheet rolling device comprises a plurality of rolling machines and multi-stage rolling treatment, wherein gaps of the rolling treatment of each stage are different, and the tobacco sheet with the specified thickness is formed after the multi-stage rolling treatment.
5. The rolled tobacco sheet production process according to claim 1, wherein: in step 5, the rolled and formed sheet is conveyed into an oven through a conveyor belt and is heated and dried through steam, the temperature is controlled to be 80-105 ℃, and the moisture after drying reaches 5-10%.
6. The process for producing rolled tobacco sheets according to claim 1, wherein in step 2, the coarsely ground raw material is finely ground twice and cooled in real time in a refrigerant manner, and the ground powder has a normal particle size distribution.
7. The process of rolling tobacco sheets as claimed in claim 1, wherein the refrigerant type and air cooling type pulverizer has a structure of: it is from lower extreme to upper end box down in proper order, well box, go up the box, be equipped with the air conditioning entry on the box down, from supreme rubbing crusher structure that is equipped with down in the well box, screening mechanism, still be equipped with feed mechanism on the well box, be equipped with the discharge gate on the last box, rubbing crusher structure is including smashing the mill, smash band pulley mechanism, abrasive brick and interior fixed ring gear, it includes crushing band pulley to smash band pulley mechanism, smash the rotation axis, it provides power to smash the rotation axis for to smash the band pulley, it carries out raw materials crushing to drive interior fixed ring gear of the high-speed rotatory cooperation of crushing mill and abrasive brick, it sets up in box down to smash the rotation axis, and smash the last connecting portion of.
8. The rolling tobacco sheet production process according to claim 7, wherein the screening mechanism comprises a grading belt wheel, a grading impeller and an impeller rotating shaft, the grading impeller is arranged in the middle box body and above the grinding disc, the impeller rotating shaft is arranged in the upper box body, an upper connecting part and a lower connecting part of the impeller rotating shaft are respectively connected with the grading belt wheel and the middle part of the grading impeller, the screening mechanism further comprises a distributing cup, the grading belt wheel drives the grading impeller to rotate, the crushed particles are flied and are screened in the rotating process by matching with a distributing ring, the particles meeting the requirements are conveyed to a discharge port by virtue of the wind power of cold air, and the particles not meeting the particle size requirements fall into the grinding bin again under the influence of insufficient wind power for secondary grinding.
9. A process for the production of rolled tobacco sheet according to claim 3 or 4, wherein: the multi-stage rolling device comprises a frame, an upper feeding hopper, a first stage rolling mechanism, a second stage rolling mechanism and a driving mechanism are sequentially arranged on the frame from top to bottom, the first stage rolling mechanism comprises an upper driving compression roller and an upper driven compression roller, a rolling gap is arranged between the upper driving compression roller and the upper driven compression roller, a discharge port of the upper feeding hopper is positioned above the rolling gap between the upper driving compression roller and the upper driven compression roller, the first-stage roller pressing mechanism is provided with a first conveying belt, the feeding side of the first conveying belt is positioned below a rolling gap between an upper driving pressing roller and an upper driven pressing roller, the second-stage roller pressing mechanism comprises a lower driving pressing roller and a lower driven pressing roller, the discharging side of the first conveying belt is positioned above the gap between the lower driving pressing roller and the lower driven pressing roller, and the feeding side of the second conveying belt is positioned below the gap between the lower driving pressing roller and the lower driven pressing roller.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113180276A (en) * | 2021-05-25 | 2021-07-30 | 中国船舶工业总公司七一五研究所宜昌分部 | Method and device for pretreating tobacco sheet raw material by papermaking method |
| CN113390817A (en) * | 2021-04-14 | 2021-09-14 | 云南烟叶复烤有限责任公司宣威复烤厂 | Pretreatment method for near-infrared detection sample of finished tobacco lamina |
| CN114794518A (en) * | 2022-02-18 | 2022-07-29 | 青岛颐中科技有限公司 | Composite rolling device and method for tobacco sheets |
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