CN111774280A - Drum-type tobacco stalk screening machine - Google Patents
Drum-type tobacco stalk screening machine Download PDFInfo
- Publication number
- CN111774280A CN111774280A CN202010479359.7A CN202010479359A CN111774280A CN 111774280 A CN111774280 A CN 111774280A CN 202010479359 A CN202010479359 A CN 202010479359A CN 111774280 A CN111774280 A CN 111774280A
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- Prior art keywords
- roller
- discharging
- communicated
- screening machine
- drum
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
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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
- A24B5/00—Stripping tobacco; Treatment of stems or ribs
- A24B5/16—Other treatment of stems or ribs, e.g. bending, chopping, incising
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
- B07B1/4663—Multi-layer screening surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
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- Manufacture Of Tobacco Products (AREA)
Abstract
The invention discloses a drum-type tobacco stem screening machine which comprises a drum screening device, a feeding device and a discharging device, wherein the drum screening device comprises an inner drum and an outer drum which are coaxially arranged; the inner roller is composed of a plurality of first roller monomers which are coaxially arranged; a plurality of first meshes are uniformly arranged on the first roller monomer; the first mesh directions on the same first roller monomer are the same; the first mesh directions on two adjacent first roller single bodies are different; a first cavity is formed between the inner roller and the outer roller; a plurality of second meshes are uniformly arranged on the outer drum; the feeding device is communicated with the feeding end of the inner roller; the discharging device comprises a first discharging assembly, a second discharging assembly and a third discharging assembly; the first discharging component is communicated with the discharging end of the inner roller; the second discharging assembly is communicated with the first cavity; the third discharging component is positioned right below the outer roller. The tobacco stem screening device can realize rapid screening of tobacco stems and improve screening efficiency.
Description
Technical Field
The invention relates to a screening tool, in particular to a drum-type tobacco stem screening machine for screening tobacco stems.
Background
In the tobacco stem processing process, tobacco stem screening is one of key process flows, and the processing quality of the tobacco stems is directly influenced by the quality of the screening effect.
In the tobacco stem feeding process, the tobacco stem screening needs to screen out broken stems with the length below 10mm and the diameter less than 1.5mm according to the requirements of technological standards, and coarse stems with the diameter more than 3mm are removed, so that the tobacco stems are prevented from entering the next working procedure.
Among the prior art, mainly sieve through the vibration plane sieve, need carry out multichannel process and just can accomplish, and can not continuous feeding at the in-process of screening, have the problem of screening inefficiency.
Disclosure of Invention
The invention aims to provide a drum-type tobacco stem screening machine, which can effectively improve the screening efficiency by arranging an inner drum and an outer drum and designing meshes on the inner drum into different directions.
The invention provides a drum-type tobacco stem screening machine which comprises a drum screening device, a feeding device and a discharging device, wherein the drum screening device comprises an inner drum and an outer drum which are coaxially arranged; the inner roller is composed of a plurality of coaxially arranged first roller monomers; a plurality of first meshes are uniformly formed in the first roller single body; the first mesh directions on the same first roller single body are the same; the first mesh directions on two adjacent first roller single bodies are different; a first cavity is formed between the inner roller and the outer roller; a plurality of second meshes are uniformly formed in the outer drum;
the feeding device is communicated with the feeding end of the inner roller;
the discharging device comprises a first discharging assembly, a second discharging assembly and a third discharging assembly; the first discharging assembly is communicated with the discharging end of the inner roller; the second discharging assembly is communicated with the first cavity; the third discharging assembly is positioned right below the outer roller.
The roller type tobacco stem screening machine is characterized in that the first roller single body is formed by encircling at least two first screens; the first meshes are uniformly arranged on the first screen; the first meshes are strip-shaped holes.
The roller type tobacco stem screening machine as described above, wherein the first mesh holes of the first roller unit are preferably arranged along an axial direction of the first roller unit or along a circumferential direction of the first roller unit.
The roller type tobacco stem screening machine is characterized in that the outer roller is composed of a plurality of second roller single bodies which are coaxially arranged.
The roller type tobacco stem screening machine is characterized in that the first roller single body is composed of four first screens; the directions of the second meshes on the four second screens are different.
The roller type tobacco stem screening machine is characterized in that the inner roller and the outer roller are fixedly connected through a plurality of connecting rods; the connecting rods are uniformly distributed along the circumferential side direction of the inner drum.
The drum-type tobacco stem screening machine is characterized in that the drum-type tobacco stem screening device is arranged in a shell in a rotating mode; a second cavity is formed between the outer roller and the shell; a toothed ring is fixedly sleeved on the outer roller; the gear ring is meshed with a transmission gear; the transmission gear is in transmission connection with an output shaft of a motor.
The roller type tobacco stem screening machine is characterized in that the lower part of the shell is provided with a discharge port communicated with the second cavity; a first discharging hopper is arranged at the discharging opening; the third discharging assembly comprises a first material guide pipe and a first conveyor belt; the first material guide pipe comprises a horizontal section and a vertical section; the horizontal section of the first material guide pipe is communicated with the outlet of the first discharge hopper and is positioned below the outlet of the first discharge hopper; the first conveyor belt is arranged along the length direction of the horizontal section of the first material guide pipe; the first conveyor belt is opposite to the outlet of the first discharging hopper, and one end of the first conveyor belt is positioned at the joint of the horizontal section and the vertical section of the first material guide pipe; the outlet of the first material guide pipe is positioned above a collecting tank.
The drum-type tobacco stem screening machine is characterized in that the discharging end of the inner drum is communicated with a second discharging hopper; the first discharging assembly comprises a second material guide pipe, a third material guide pipe and a second conveyor belt; the second material guide pipe is horizontally arranged and is positioned below the second discharge hopper, and the second material guide pipe is communicated with the second discharge hopper; one end of the third material guiding pipe is communicated with one end of the second guide pipe, which is far away from the inner roller, and the third material guiding pipe is arranged downwards along the direction far away from the second material guiding pipe; the second conveyor belt is arranged in the second material guide pipe; the second conveyor belt is opposite to the outlet of the second discharging hopper, and one end of the second conveyor belt is located at the joint of the second material guiding pipe and the third material guiding pipe.
The roller type tobacco stem screening machine is characterized in that the first cavity is communicated with a third discharging hopper; the second discharging assembly comprises a material guide plate; one end of the material guide plate is positioned below the third discharge hopper; the other end of the material guide plate is connected with the next working procedure; and a third conveying belt is arranged on the material guide plate along the length direction of the material guide plate.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the tobacco stem screening machine, the inner roller and the outer roller which are coaxially arranged are arranged, so that tobacco stems with the diameter larger than 2mm can be discharged from the discharge end of the inner roller, the tobacco stems meeting the size requirement can be discharged from a cavity formed by the inner roller and the outer roller, and broken stems with the length below 10mm and the diameter smaller than 1.5mm can be discharged from meshes of the outer roller, and therefore the screening efficiency can be effectively improved; and the directions of the meshes on the inner roller and the outer roller are designed to be different, so that the crushed stalks are more conveniently screened out, and the screening efficiency is improved.
2. According to the invention, the first discharging component, the second discharging component and the third discharging component are arranged, so that the screened coarse stems, the tobacco stems and the crushed stems which meet the requirements can be respectively transported out, the respective collection is convenient, and the continuous screening is realized.
3. According to the invention, the outlet of the second discharging assembly is connected with the next working procedure, so that the continuous production is conveniently realized, and the total production efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of a drum-type tobacco stem screening machine according to the present invention;
FIG. 2 is a cross-sectional view of a drum-type tobacco stem screening machine of the present invention;
fig. 3 is a partial perspective view of the drum-type tobacco stem screening machine according to the present invention.
Description of reference numerals: 1-roller screening device, 2-feeding device, 3-discharging device, 101-inner roller, 102-outer roller, 101 a-first mesh, 4-first cavity, 102 a-second mesh, 301-first discharging component, 302-second discharging component, 303-third discharging component, 5-shell, 6-second cavity, 7-first discharging hopper, 303 a-first material guide pipe, 303 b-first conveying belt, 8-collecting tank, 9-second discharging hopper, 301 a-second material guide pipe, 301 b-third material guide pipe, 301 c-second conveying belt, 10-third discharging hopper, 11-material guide plate and 12-third conveying belt.
Detailed Description
The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
The embodiment of the invention comprises the following steps: as shown in fig. 1-3, a drum-type tobacco stem screening machine comprises a drum screening device 1, a feeding device 2 and a discharging device 3, wherein the drum screening device 1 comprises an inner drum 101 and an outer drum 102 which are coaxially arranged; the inner roller 101 is formed by welding a plurality of coaxially arranged first roller monomers, a plurality of first meshes 101a are uniformly formed in each first roller monomer, and specifically, each first roller monomer is surrounded by at least two first screens in a welding mode; the first meshes 101a are uniformly arranged on the first screen; the first mesh holes 101a are strip-shaped holes, the length of the first mesh holes 101a is 17mm, and the width of the first mesh holes 101a is 3mm, so that thick stalks with the diameter larger than 3mm can be conveniently screened out and discharged from the discharge end of the inner drum 101; the first mesh openings 101a on the same first roller single body are in the same direction; the directions of the first mesh holes 101a on two adjacent first roller single bodies are different, so that the tobacco stems meeting the requirements can be more conveniently screened into the first cavity 4 from the mesh holes of the inner roller 101; a first cavity 4 is formed between the inner roller 101 and the outer roller 102; a plurality of second meshes 102a are uniformly arranged on the outer drum 102, and the second meshes 102a are also strip-shaped holes with the diameter of 1.5mm and the length of 10 mm; in order to facilitate the discharge of the screened tobacco stalks from the roller screening device 1, the roller screening device 1 can be obliquely arranged, so that the feeding end of the inner roller 101 is higher than the discharging end; the inner roller 101 and the outer roller 102 are fixedly connected through a plurality of connecting rods; the plurality of connecting rods are uniformly distributed along the circumferential direction of the inner drum 101, and the inner drum 101 and the outer drum 102 are fixedly connected together through the connecting rods, so that the inner drum 101 and the outer drum 102 can synchronously rotate.
The feeding device 2 is communicated with the feeding end of the inner roller 101; the feeding device 2 may optionally use a feed hopper or alternatively a conveyor belt for feeding.
The discharging device 3 comprises a first discharging assembly 301, a second discharging assembly 302 and a third discharging assembly 303; the first discharging assembly 301 is communicated with the discharging end of the inner roller 101; the second discharging component 302 is communicated with the first cavity 4, specifically, the communicating end of the first cavity 4 and the second discharging component 302 is positioned close to the discharging end of the inner roller 101, so that the screening time of tobacco stems in the first cavity 4 can be increased, and the screening of broken stems is facilitated; the third outfeed assembly 303 is located directly below the outer drum 102.
The specific working process is described as follows: starting the roller screening device 1, throwing tobacco stems to be screened into the feeding end of the inner roller 101 through the feeding device 2, realizing primary screening of the tobacco stems in the inner roller 101, enabling the tobacco stems with larger diameters to enter the first discharging component 301 through the discharging end of the inner roller 101, enabling the tobacco stems and crushed stems with the diameters meeting requirements to enter the first cavity 4 for secondary screening, and discharging the crushed stems which do not meet the requirements after being screened by the outer roller 102 to the third discharging component 303 through the second mesh 102a of the outer roller 102; while the satisfactory stems are discharged into the second outfeed assembly 302. Therefore, the tobacco stems can be better screened, and the screening efficiency is improved.
The first mesh openings 101a of the first roller unit are arranged in the axial direction of the first roller unit or in the circumferential direction of the first roller unit.
The outer drum 102 is formed by welding a plurality of coaxially arranged second drum monomers. The second roller monomer consists of four second screens; the directions of the second mesh openings 102a on the four second screens are different. Therefore, the crushed stalks can be discharged from the second mesh holes 102a more conveniently in the screening process, and the screening efficiency is improved.
Further, the drum screening device 1 is rotatably installed in a shell 5, the lower part of the shell 5 is provided with a supporting leg (not shown in the figure), and a toothed ring is fixedly sleeved on the outer drum 102 of the drum screening device 1; the gear ring is meshed with a transmission gear; the transmission gear is in transmission connection with an output shaft of a motor. Therefore, the transmission gear can be driven to rotate through the rotation of the motor, the transmission gear drives the gear ring to rotate, and the gear ring drives the outer roller 102 and the inner roller 101 to synchronously rotate.
The lower part of the shell 5 is provided with a discharge port communicated with the second cavity 6; a first discharging hopper 7 is arranged at the discharging opening; the third discharging assembly 303 includes a first guide pipe 303a and a first conveyor belt 303 b; the first guide tube 303a includes a horizontal section and a vertical section; the horizontal section of the first material guide pipe 303a is communicated with the outlet of the first discharging hopper 7 and is positioned below the outlet of the first discharging hopper 7; the first conveyor belt 303b is disposed along the length direction of the horizontal section of the first guide tube 303 a; the first conveyor belt 303b is opposite to the outlet of the first discharge hopper 7, and one end of the first conveyor belt 303b is located at the joint of the horizontal section and the vertical section of the first material guide pipe 303 a; the arrangement of the first conveyor belt 303b facilitates the crushed stalks entering the horizontal section of the first material guide pipe 303a to enter the vertical section of the first material guide pipe 303a, thereby facilitating the discharge and collection of the crushed stalks. The outlet of the first guide pipe 303a is positioned above a collecting tank 8.
The discharge end of the inner roller 101 is communicated with a second discharge hopper 9; the first discharging assembly 301 comprises a second guide pipe 301a, a third guide pipe 301b and a second conveyor belt 301 c; the second material guiding pipe 301a is horizontally arranged, the second material guiding pipe 301a is positioned below the second discharging hopper 9, and the second material guiding pipe 301a is communicated with the second discharging hopper 9; one end of the third material guiding pipe 301b is communicated with one end of the second guide pipe far away from the inner drum 101, and the third material guiding pipe 301b is arranged downwards along the direction far away from the second material guiding pipe 301 a; the second conveyor belt 301c is disposed in the second guide tube 301 a; the second conveyor belt 301c is opposite to the outlet of the second discharging hopper 9, and one end of the second conveyor belt 301c is located at the junction of the second material guiding pipe 301a and the third material guiding pipe 301 b.
In the first step, the first cavity 4 is communicated with a third discharge hopper 10; the second discharging assembly 302 comprises a material guide plate 11; one end of the material guide plate 11 is positioned below the third discharging hopper 10; the other end of the material guide plate 11 is connected with the next working procedure; the guide plate 11 is provided with a third conveyor belt 12 along its length. During specific implementation, baffles for preventing tobacco stems from falling off are arranged on two sides of the material guide plate 11 along the length direction, the screened tobacco stems meeting the requirements are conveyed to the next procedure by the third conveying belt 12, manual carrying is avoided, efficiency is improved, and continuous production is facilitated.
The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.
Claims (10)
1. A roller type tobacco stem screening machine comprises a roller screening device (1), a feeding device (2) and a discharging device (3), and is characterized in that the roller screening device (1) comprises an inner roller (101) and an outer roller (102) which are coaxially arranged; the inner roller (101) is composed of a plurality of coaxially arranged first roller monomers; a plurality of first meshes (101a) are uniformly arranged on the first roller single body; the first mesh openings (101a) on the same first roller single body are in the same direction; the directions of the first meshes (101a) on two adjacent first roller single bodies are different; a first cavity (4) is formed between the inner roller (101) and the outer roller (102); a plurality of second meshes (102a) are uniformly arranged on the outer roller (102);
the feeding device (2) is communicated with the feeding end of the inner roller (101);
the discharging device (3) comprises a first discharging assembly (301), a second discharging assembly (302) and a third discharging assembly (303); the first discharging assembly (301) is communicated with the discharging end of the inner roller (101); the second discharging assembly (302) is communicated with the first cavity (4); the third discharging assembly (303) is positioned right below the outer roller (102).
2. The roller-type tobacco stem screening machine according to claim 1, wherein: the first roller single body is surrounded by at least two first screens; the first meshes (101a) are uniformly arranged on the first screen; the first meshes (101a) are strip-shaped holes.
3. The roller-type tobacco stem screening machine according to claim 2, wherein: the first mesh (101a) on the first roller single body is arranged along the axial direction of the first roller single body or along the circumferential side direction of the first roller single body.
4. The roller-type tobacco stem screening machine according to claim 1, wherein: the outer roller (102) is composed of a plurality of coaxially arranged second roller single bodies.
5. The roller-type tobacco stem screening machine according to claim 4, wherein: the second roller single body is composed of four second screens; the directions of the second mesh openings (102a) on the four second screens are different.
6. The roller-type tobacco stem screening machine according to claim 1, wherein: the inner roller (101) is fixedly connected with the outer roller (102) through a plurality of connecting rods; the connecting rods are uniformly distributed along the circumferential direction of the inner drum (101).
7. The roller-type tobacco stem screening machine according to claim 6, wherein: the drum screening device 1 is rotatably arranged in a shell (5); a second cavity (6) is formed between the outer roller (102) and the shell (5); a toothed ring is fixedly sleeved on the outer roller (102); the gear ring is meshed with a transmission gear; the transmission gear is in transmission connection with an output shaft of a motor.
8. The roller-type tobacco stem screening machine according to claim 7, wherein: the lower part of the shell (5) is provided with a discharge hole communicated with the second cavity (6); a first discharging hopper (7) is arranged at the discharging opening; the third discharging assembly (303) comprises a first material guide pipe (303a) and a first conveying belt (303 b); the first guide tube (303a) comprises a horizontal section and a vertical section; the horizontal section of the first material guide pipe (303a) is communicated with the outlet of the first discharging hopper (7) and is positioned below the outlet of the first discharging hopper (7); the first conveyor belt (303b) is arranged along the length direction of the horizontal section of the first material guide pipe (303 a); the first conveyor belt (303b) is opposite to the outlet of the first discharging hopper (7), and one end of the first conveyor belt (303b) is positioned at the joint of the horizontal section and the vertical section of the first material guide pipe (303 a); the outlet of the first material guiding pipe (303a) is positioned above a collecting tank (8).
9. The roller-type tobacco stem screening machine according to claim 7, wherein the discharge end of the inner roller (101) is communicated with a second discharge hopper (9); the first discharging assembly (301) comprises a second guide pipe (301a), a third guide pipe (301b) and a second conveyor belt (301 c); the second material guiding pipe (301a) is horizontally arranged, the second material guiding pipe (301a) is positioned below the second discharging hopper (9), and the second material guiding pipe (301a) is communicated with the second discharging hopper (9); one end of the third material guiding pipe (301b) is communicated with one end of the second conduit pipe far away from the inner roller (101), and the third material guiding pipe (301b) is downwards arranged along the direction far away from the second material guiding pipe (301 a); the second conveyor belt (301c) is disposed in the second guide tube (301 a); the second conveyor belt (301c) is opposite to the outlet of the second discharging hopper (9), and one end of the second conveyor belt (301c) is positioned at the joint of the second guide pipe (301a) and the third guide pipe (301 b).
10. The roller-type tobacco stem screening machine according to claim 9, wherein the first cavity (4) is communicated with a third discharging hopper (10); the second discharging assembly (302) comprises a material guide plate (11); one end of the material guide plate (11) is positioned below the third discharging hopper (10); the other end of the material guide plate (11) is connected with the next working procedure; and a third conveyor belt (12) is arranged on the material guide plate (11) along the length direction thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010479359.7A CN111774280A (en) | 2020-05-29 | 2020-05-29 | Drum-type tobacco stalk screening machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010479359.7A CN111774280A (en) | 2020-05-29 | 2020-05-29 | Drum-type tobacco stalk screening machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111774280A true CN111774280A (en) | 2020-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010479359.7A Pending CN111774280A (en) | 2020-05-29 | 2020-05-29 | Drum-type tobacco stalk screening machine |
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| Country | Link |
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| CN (1) | CN111774280A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115444159A (en) * | 2022-08-19 | 2022-12-09 | 广东中烟工业有限责任公司 | High-efficient directional screening plant of double-deck drum-type smoked sheet |
| WO2022257888A1 (en) * | 2021-06-09 | 2022-12-15 | 云南中烟工业有限责任公司 | Screening and moisture regaining integrated device and method for screening and moisture regaining of tobacco stems |
-
2020
- 2020-05-29 CN CN202010479359.7A patent/CN111774280A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022257888A1 (en) * | 2021-06-09 | 2022-12-15 | 云南中烟工业有限责任公司 | Screening and moisture regaining integrated device and method for screening and moisture regaining of tobacco stems |
| KR20220166821A (en) * | 2021-06-09 | 2022-12-19 | 차이나 타바코 윈난 인더스트리얼 컴퍼니 리미티드 | Integrated device for sieving-moisture re-absorption and method for sifting-moisture re-absorption of tobacco stems |
| KR102566053B1 (en) | 2021-06-09 | 2023-08-10 | 차이나 타바코 윈난 인더스트리얼 컴퍼니 리미티드 | Integrated device for sieving-moisture re-absorption and method for sifting-moisture re-absorption of tobacco stems |
| US11849755B2 (en) | 2021-06-09 | 2023-12-26 | China Tobacco Yunnan Industrial Co., Ltd | Stem screening and conditioning device and method of using the same |
| CN115444159A (en) * | 2022-08-19 | 2022-12-09 | 广东中烟工业有限责任公司 | High-efficient directional screening plant of double-deck drum-type smoked sheet |
| CN115444159B (en) * | 2022-08-19 | 2023-06-13 | 广东中烟工业有限责任公司 | Double-layer drum-type efficient directional screening device for tobacco flakes |
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