CN110584183A - Tobacco stem sorting screen and screening device - Google Patents
Tobacco stem sorting screen and screening device Download PDFInfo
- Publication number
- CN110584183A CN110584183A CN201910854850.0A CN201910854850A CN110584183A CN 110584183 A CN110584183 A CN 110584183A CN 201910854850 A CN201910854850 A CN 201910854850A CN 110584183 A CN110584183 A CN 110584183A
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- China
- Prior art keywords
- screen
- stem
- section
- screening
- tobacco
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012216 screening Methods 0.000 title claims abstract description 75
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 66
- 244000061176 Nicotiana tabacum Species 0.000 title 1
- 241000208125 Nicotiana Species 0.000 claims abstract description 65
- 230000007704 transition Effects 0.000 claims abstract description 5
- 230000000903 blocking effect Effects 0.000 claims description 13
- 230000004888 barrier function Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 4
- 239000002356 single layer Substances 0.000 abstract description 3
- 241000196324 Embryophyta Species 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Abstract
The invention discloses a tobacco stem separating screen and a screening device, wherein screen holes extending along the length direction of a screen surface are arranged on the screen surface of the tobacco stem separating screen, each screen hole comprises a fine stem screen section, a middle stem screen section and a stem turning screen section which are sequentially arranged, the widths of the fine stem screen section, the middle stem screen section and the stem turning screen section are gradually increased along the length direction of the screen surface, and the joints among the fine stem screen section, the middle stem screen section and the stem turning screen section are in linear transition. The tobacco stem sorting screen can realize the sorting of tobacco stems with different thicknesses on the basis of a single-layer screen, has high sorting efficiency and is not easy to block materials.
Description
Technical Field
The invention relates to the field of tobacco processing, in particular to a tobacco stem sorting sieve and a sorting device.
Background
The tobacco stems need to be cut into threads in the cigarette production process so as to obtain the cut stems which can be directly used for cigarette production. In the production process of cut stems, the main factors influencing the cutting quality of the tobacco stems are the thickness, the length and the uniformity of the tobacco stems. However, the shape of the tobacco stem is changed more, especially the stem turns in the tobacco stem, and the shredding operation is affected because the shape is irregular.
The existing tobacco stem screening devices are divided into two types. A screen cloth of tobacco stalk screening plant is the individual layer mesh screen that has the round hole, and this kind of tobacco stalk screening plant's screening efficiency is low and easy blind grain (the granularity is between 1.00 ~ 1.10 times sieve pore diameter) stifled hole phenomenon appears. Another kind of offal screening plant has the screen cloth of multilayer layering arrangement, and the screen cloth of different layers has the sieve mesh of different grade type, for example bar hole, square hole or round hole etc. and this kind of offal screening plant's screening efficiency is lower.
However, the existing tobacco stem screening device has high degree of distinguishing the length of the tobacco stems, for example, the degree of distinguishing long stems (the length is more than 20mm) from short stems (the length is less than or equal to 20mm) is high, and the distinguishing and removing effect on the thickness of the tobacco stems, especially the stem stalks, is poor. The screened finished tobacco stems are often mixed with a certain proportion of fine stems and stem stalks. In addition, in the screening process, the screen is easily blocked by the stalk turns with irregular shapes, the screen needs to be cleaned frequently, and the working efficiency is influenced.
Therefore, how to provide a sorting screen capable of effectively distinguishing the thickness of the tobacco stems becomes a technical problem which needs to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a novel technical scheme of a tobacco stem sorting screen capable of effectively distinguishing the thickness of tobacco stems.
According to a first aspect of the present invention, there is provided a tobacco stem sorting screen.
The tobacco stem separating screen is characterized in that screen holes extending along the length direction of the screen surface are formed in the screen surface of the tobacco stem separating screen, the screen holes comprise a fine stem screen section, a middle stem screen section and a stem turning screen section which are sequentially arranged, the widths of the fine stem screen section, the middle stem screen section and the stem turning screen section are gradually increased along the length direction of the screen surface, and the connecting positions of the fine stem screen section, the middle stem screen section and the stem turning screen section are in linear transition.
Optionally, the screen surface is a rectangular screen surface, first blocking parts in an isosceles trapezoid shape are arranged between adjacent small-stalk screening sections, second blocking parts in an isosceles trapezoid shape are arranged between adjacent middle-stalk screening sections, and third blocking parts in an isosceles triangle shape are arranged between adjacent stalk-turning screening sections.
Optionally, the sieve mesh further includes an anti-blocking section, the anti-blocking section is connected to one end, far away from the middle stem sieve section, of the fine stem sieve section, the width of the anti-blocking section is gradually increased along a direction far away from the fine stem sieve section, the maximum width of the anti-blocking section is greater than the minimum width of the middle stem sieve section and less than 75% of the maximum width of the middle stem sieve section, and the length of the anti-blocking section is less than 10% of the length of the fine stem sieve section.
Optionally, a fourth blocking portion is arranged between adjacent anti-blocking sections, and the edge of the fourth blocking portion forming the sieve hole has an arc shape.
Optionally, the screen surface is a fan-shaped screen surface, both ends of the length direction of the screen surface are arc-shaped surfaces, and the screen holes are radially arranged along the screen surface.
Optionally, a separating strip is arranged between every two adjacent sieve holes, and the fine stalk sieving section is located on one side of the inner arc of the sieve surface.
Optionally, the change trend of the spacing between every two adjacent separating strips is the same.
Optionally, the minimum width of the fine stalk sieve section is 1-3mm, and the maximum width of the stalk sieve section is 12-20 mm.
Optionally, the length of the fine stalk sieve section is the same as that of the stalk turning sieve section, and the length of the middle stalk sieve section is 2-4 times that of the fine stalk sieve section.
According to a second aspect of the present invention, there is provided a screening device.
The screening device comprises the tobacco stem screening screen.
The tobacco stem sorting screen can realize the sorting of tobacco stems with different thicknesses on the basis of a single-layer screen, has high sorting efficiency and is not easy to block materials.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a first embodiment of the tobacco stem sorting screen disclosed in the present disclosure.
Fig. 2 is a schematic structural diagram of a second embodiment of the tobacco stem sorting screen disclosed in the present disclosure.
The figures are labeled as follows:
the screening method comprises the following steps of screening holes-1, screening fine stalk sections-11, screening middle stalk sections-12, screening stalk and crutch sections-13, anti-blocking sections-14, first blocking parts-15, second blocking parts-16, third blocking parts-17, fourth blocking parts-18 and separating strips-19.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1 and 2, the screen surface of the stem sorting screen of the present disclosure is provided with screen holes 1 extending in the length direction of the screen surface. The sieve pore 1 comprises a fine stalk sieve section 11, a middle stalk sieve section 12 and a stalk turning sieve section 13 which are arranged in sequence (the straight line which is intersected with the sieve pore 1 in the figure is only used for distinguishing each sieve section). Each screen hole 1 is provided with a fine stalk screen section 11, a middle stalk screen section 12 and a stalk turning screen section 13. The widths of the fine stem screening section 11, the middle stem screening section 12 and the stem crutch screening section 13 are gradually increased along the length direction of the screen surface, and the connection parts among the fine stem screening section 11, the middle stem screening section 12 and the stem crutch screening section 13 are in linear transition. The linear transition means that no bulge or corner exists at the joint of each screen section, and the screen sections are in a straight line shape.
When the tobacco stem sorting screen is used, the tobacco stems move from the fine stem screening section 11 to the stem turning screening section 13, fine tobacco stems are screened out from the fine stem screening section 11, thick stem turns are screened out from the stem turning screening section 13, tobacco stems suitable for shredding operation are screened out from the middle stem screening section 12, and therefore the purpose of screening according to the thickness of the tobacco stems is effectively achieved.
Because the tobacco stems move along the sieve holes 1 extending along the length direction of the sieve surface of the tobacco stem sorting sieve, the sieve holes 1 are not easily blocked by the tobacco stems, and the sieving work efficiency is effectively improved.
The tobacco stem sorting screen can realize the sorting of tobacco stems with different thicknesses on the basis of a single-layer screen, has high sorting efficiency and is not easy to block materials.
In one embodiment of the stem sorting screen of the present disclosure, as shown in fig. 1, the screening surface is a rectangular screening surface. A first baffle part 15 in an isosceles trapezoid shape is arranged between the adjacent stem screening sections 11. And a second baffle part 16 in an isosceles trapezoid shape is arranged between the adjacent middle stalk screening sections 12. And a third baffle part 17 in the shape of an isosceles triangle is arranged between the adjacent stalk-turning screening sections 13. The tobacco stem sorting screen with the structure can obviously distinguish the adjacent screen holes 1, so that the tobacco stems can enter different screen holes 1 more uniformly.
In specific implementation, the screen surface can be directly perforated to form the screen holes 1, so that the blocking parts for separating the screen holes 1 are formed between different screen holes 1.
Further, the screen aperture 1 also comprises an anti-clogging section 14. The anti-clogging section 14 is connected with one end of the stem screening section 11 far away from the stem screening section 12, and the width of the anti-clogging section 14 is gradually increased along the direction far away from the stem screening section 11. The maximum width of the deblinding section 14 is greater than the minimum width of the medium stem screen section 12 and less than 75% of the maximum width of the medium stem screen section 12. The length of the anti-clogging section 14 is less than 10% of the length of the stem screening section 11.
When the tobacco stems enter the tobacco stem sorting screen in a large batch, the tobacco stems enter the fine stem screening section 11, and the free end side of the fine stem screening section 11 is the minimum width position of the fine stem screening section 11, so that the tobacco stems are likely to be blocked at the free end side of the fine stem screening section 11, and the screening efficiency is affected. The anti-blocking section 14 is beneficial to dredging the tobacco stems when large batches of tobacco stems enter the tobacco stem sorting screen, so that the tobacco stems are prevented from being blocked, and the screening efficiency is improved.
Further, to more effectively avoid stem jamming, a fourth barrier 18 is provided between adjacent jam-resistant segments 14. The edge of the fourth barrier 18 forming the screening hole 1 has an arc-shaped form.
In another embodiment of the stem sorting screen of the present disclosure, as shown in fig. 2, the screening surface is a fan-shaped screening surface. Both ends of the length direction of the screen surface are arc surfaces. The sieve holes 1 are radially arranged along the sieve surface. The distribution of the sieve pores 1 of the tobacco stem separating sieve with the structure can be tighter, thereby improving the screening efficiency of the tobacco stem separating sieve.
Further, in order to more effectively improve the tightness of the screen holes 1, a parting strip 19 is arranged between the adjacent screen holes 1, and the stalk screen section 11 is positioned on the inner arc side of the screen surface. The separator strip 19 may be plate-like in shape.
Furthermore, in order to improve the screening efficiency of the tobacco stem screening sieve and avoid material blockage, the change trend of the distance between every two adjacent separation strips 19 is the same.
In one embodiment of the stem sorting screen of the present disclosure, the minimum width of the fine stem screening segment 11 is 1-3mm and the maximum width of the stalk screen segment 13 is 12-20 mm.
In one embodiment of the tobacco stem sorting screen of the present disclosure, the length of the fine stem screening section 11 is the same as that of the stem stalk screening section 13, and the length of the middle stem screening section 12 is 2 to 4 times that of the fine stem screening section 11.
The disclosure also provides a screening device, which comprises the tobacco stem screening screen.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. The tobacco stem separating screen is characterized in that screen holes extending along the length direction of the screen surface are formed in the screen surface of the tobacco stem separating screen, the screen holes comprise a fine stem screen section, a middle stem screen section and a stem turning screen section which are sequentially arranged, the widths of the fine stem screen section, the middle stem screen section and the stem turning screen section are gradually increased along the length direction of the screen surface, and the connecting positions of the fine stem screen section, the middle stem screen section and the stem turning screen section are in linear transition.
2. The tobacco stem sorting screen according to claim 1, wherein the screen surface is a rectangular screen surface, a first blocking portion in an isosceles trapezoid shape is arranged between adjacent small stem screening sections, a second blocking portion in an isosceles trapezoid shape is arranged between adjacent middle stem screening sections, and a third blocking portion in an isosceles triangle shape is arranged between adjacent stem turning screening sections.
3. The tobacco stem sorting screen according to claim 2, wherein the screen holes further comprise an anti-clogging segment, the anti-clogging segment is connected with one end of the fine stem screening segment away from the middle stem screening segment, the width of the anti-clogging segment gradually increases along the direction away from the fine stem screening segment, the maximum width of the anti-clogging segment is larger than the minimum width of the middle stem screening segment and smaller than 75% of the maximum width of the middle stem screening segment, and the length of the anti-clogging segment is smaller than 10% of the length of the fine stem screening segment.
4. The stem sorting screen of claim 3, wherein a fourth barrier is provided between adjacent ones of said anti-jamming sections, the edges of said fourth barrier forming said screen apertures having an arcuate shape.
5. The tobacco stem sorting screen according to claim 1, wherein the screen surface is a fan-shaped screen surface, both ends of the screen surface in the length direction are arc-shaped surfaces, and the screen holes are radially arranged along the screen surface.
6. The tobacco stem sorting screen according to claim 5, wherein a separating strip is arranged between adjacent screen holes, and the fine stem screening section is positioned on one side of the inner arc of the screen surface.
7. The tobacco stem sorting screen according to claim 6, wherein the variation trend of the spacing between adjacent separating strips is the same.
8. The tobacco stem sorting screen according to any one of claims 1 to 7, wherein the minimum width of the fine stem screen section is 1-3mm, and the maximum width of the stem stalk screen section is 12-20 mm.
9. The tobacco stem sorting screen according to any one of claims 1 to 7, wherein the length of the fine stem screen section is the same as that of the stem turning screen section, and the length of the middle stem screen section is 2-4 times that of the fine stem screen section.
10. A screening device comprising a tobacco stem screening screen according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910854850.0A CN110584183A (en) | 2019-09-10 | 2019-09-10 | Tobacco stem sorting screen and screening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910854850.0A CN110584183A (en) | 2019-09-10 | 2019-09-10 | Tobacco stem sorting screen and screening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110584183A true CN110584183A (en) | 2019-12-20 |
Family
ID=68858729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910854850.0A Pending CN110584183A (en) | 2019-09-10 | 2019-09-10 | Tobacco stem sorting screen and screening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110584183A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201516413U (en) * | 2009-09-14 | 2010-06-30 | 广东福利龙复合肥有限公司 | Vibrating and screening device |
| CN102342581A (en) * | 2011-09-23 | 2012-02-08 | 云南烟叶复烤有限责任公司师宗复烤厂 | Closed five-face screen roller tobacco stalk separator |
| CN105057041A (en) * | 2015-08-12 | 2015-11-18 | 江苏双星特钢有限公司 | Anti-blockage device of partition bin grid plate |
| CN206689011U (en) * | 2017-04-11 | 2017-12-01 | 山东建成建设机械有限公司 | Sieve native roller screen |
| CN209238358U (en) * | 2018-11-24 | 2019-08-13 | 浙江晟达机械有限公司 | A kind of gravity type material is from screen device |
| CN211048375U (en) * | 2019-09-10 | 2020-07-21 | 河南中烟工业有限责任公司 | Tobacco stem sorting screen and screening device |
-
2019
- 2019-09-10 CN CN201910854850.0A patent/CN110584183A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201516413U (en) * | 2009-09-14 | 2010-06-30 | 广东福利龙复合肥有限公司 | Vibrating and screening device |
| CN102342581A (en) * | 2011-09-23 | 2012-02-08 | 云南烟叶复烤有限责任公司师宗复烤厂 | Closed five-face screen roller tobacco stalk separator |
| CN105057041A (en) * | 2015-08-12 | 2015-11-18 | 江苏双星特钢有限公司 | Anti-blockage device of partition bin grid plate |
| CN206689011U (en) * | 2017-04-11 | 2017-12-01 | 山东建成建设机械有限公司 | Sieve native roller screen |
| CN209238358U (en) * | 2018-11-24 | 2019-08-13 | 浙江晟达机械有限公司 | A kind of gravity type material is from screen device |
| CN211048375U (en) * | 2019-09-10 | 2020-07-21 | 河南中烟工业有限责任公司 | Tobacco stem sorting screen and screening device |
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