CN205884653U - Tobacco material sorting equipment - Google Patents

Abstract

The utility model provides a tobacco material sorting equipment, including winnowing box organism, tangential material discharge device and branch filter screen area, winnowing box organism top is connected with tangential material discharge device, divide the filter screen area to be located winnowing box organism upper portion, one side that the winnowing box organism was followed in this minute filter screen area penetrates, wears out from winnowing box organism opposite side, branch filter screen area is provided with conveyor in minute below in filter screen area after wearing out the winnowing box organism. The utility model discloses a wind -force makes the material upward movement, and debris are because the dead weight force rate is greater than wind -force falls to the debris material district that falls, the stalk silk filtering area that moves of upwards floating with wind, and through being collected output behind minute filter screen area, and slice stalk silk is attached to a minute filter screen area lower surface, is divided the filter screen area to take out of and discharges after falling into conveyor behind the winnowing box organism. The utility model discloses realize continuous, steady, homogeneous material classification to garrulous great, the efficiency of classification low grade shortcoming of making of traditional vibration screening machine existence has been overcome, cigarette processing can be satisfied to the user demand of difference stalk silk morphological classification.

Description

Tobacco sorting device

Technical field

This utility model belongs to Medicated cigarette manufacturing process equipment technical field, more particularly, to a kind of to filamentous form stem and piece Shape form stem, stalk sign the stem classifier of classification.

Background technology

About 2,400,000 tons of the yield of annual China Nicotiana tabacum L., can about 600,000 tons about of output cabo, wherein can obtain effective profit About 400,000 tons about.At present, the stem of output is more uses in low and middle-grade Medicated cigarette, and high-grade cigarette does not use stem or use Seldom, the stem consumption in the ramuscule Medicated cigarette developing rapidly in recent years is also little for amount.Use in high-grade cigarette product for the stem It is primarily present the problem of two aspects: one is that stem is morphologically larger with the tobacco shred component difference such as cut tobacco, expansion thread, is unfavorable for Stem is uniformly mixed different substances together with other tobacco shred component, the stability of the manufacturing quality such as impact Cigarette Draw Resistance；Two is stem in sense organ matter Birth defect is existed on amount, the organoleptic quality of Medicated cigarette can be affected to a certain extent, limit stem in high-grade cigarette Use.

At present, the screening pattern that China's tobacco business commonly uses is essentially all to sieve thing using vibration type screening machine Material, can meet technique productions demand substantially.

The utility model of application number 2007201018169 discloses a kind of self-cleaning vibrating screen classifier, including cell body and The screen cloth body setting in it, described screen cloth body is one some sections of Split type structure body；The screen cloth body of its each split and cell body It is flexibly connected；With one blowning installation of installation on this cell body.When so screening machine is shut down, can be cleared up in cell body by blowning installation Portion be allowed to keep cleaning, completely recover Tobacco Leaves screening process performance, eliminate existing screening machine easily block, be not easily cleaned lack Fall into, thus reaching and meeting technological requirement.

The application for a patent for invention of application number 201210356532x discloses a kind of multistage combined tobacco shred vibration screening Put.This multistage combined tobacco shred vibration screening device includes conveying equipment, combination sieve, and the upstream of described combination sieve arranges vibration Conveying equipment (jigging conveyer), the downstream of described combination sieve arranges conveying equipment.It is said that this invention is by traditional list Layer screen cloth improves, and monolayer screen cloth is designed to multilayer screen cloth, single aperture design is become the aperture of different size, to tobacco shred Carry out multi-stage screening, improve tobacco shred screening efficiency, structure is simple, and operating cost is cheap, easy and simple to handle, screening efficiency is high.

The utility model of application number 2004200744812 discloses a kind of sieving machine for secondary utilization of tobacco dust, including shaking Dynamic sieve and the vibration assembly driving vibrosieve work, every layer of vibrating screen mesh bottom being arranged in body is provided with screen cloth Mesh anti-jamming mechanism, and described screen cloth mesh anti-jamming mechanism is by support net, by support net and positioned at support both net upper screen structure The space becoming is separated into the interval dividing plate of unit and is arranged on the wearable elastic ball composition in each unit interval.This practicality is new Using wearable elastic ball in screen cloth mesh anti-jamming mechanism, the impact screen of quickly beating in unit interval prevents screen cloth mesh to type Blocking, and so that gunnysack fiber and dust is completely separated.It is made to be not only simple in structure, blocking-proof result is good, stable, fault rate Low, and, effectively the different material in dust can be sieved, be allowed to really to realize tobacco dust secondary recovery fully sharp Purpose.

The various forms of vibrating screen classifiers of foregoing invention are although preferably solve in production existing many asks Topic, but, there is many and duplicate in structure and principle, there is also some problems, particularly with physical aspect with proportion closely Material, can not reach the effect of good screening using traditional vibrosieve mode, and for relatively dry material Screening, the broken dust simultaneously of making even more increasing material also pollutes surrounding enviroment, for this in order to better adapt to industry processing Require, need the related new technique of research and equipment.

The utility model of application number 2013206888671 discloses a kind of stem separator, using screening scheme twice, the Once sieve: material to be screened is put in feed hopper, and material sends into throwing feeder by feed hopper by pipeline.Throwing feeder passes through to throw Material motor drives the material casting wing on material casting axle to throw material in buoyancy sorting bin.The suction that the discharge bucket of buoyancy sorting bin connects Lighter high-quality stem in material is suctioned out by power apparatus, and heavier caking and carbonization stem are to whereabouts.Sieve for second: heavier To on separating sieve, bent axle pulls output shaft to make separating sieve vertical tremor, because the compass screen surface of separating sieve is certainly for caking and carbonization stem Inclined-plane left to bottom right, the stem of bulk in the relatively heavy material on compass screen surface can be thrown to separating sieve by the separating sieve of vertical tremor The waste port on right side, in heavier caking and carbonization stem mixture, the high-quality stem of fritter is by falling on splicing car in mesh, complete Become second and sieve.The program cannot separate thread stem and lamellar stem, if the wind that buoyancy sorting bin is passed through is excessive, can Thread stem is blown afloat together with lamellar stem and is suctioned out by suction device；If the wind being passed through is too small, lamellar stem and knot Fall on separating sieve together with block and carbonization stem etc., if the aperture of separating sieve is larger, lamellar stem can be with heavier caking and charcoal Change the high-quality stem of fritter in stem mixture to fall together on splicing car, if aperture is too small, lamellar stem and heavier knot Block and carbonization stem mixture are discharged from waste port together as waste material, lead to stem to waste；Due to there is thread stem and piece , in addition it is also necessary to be separated again, separation efficiency is very low for shape stem mixture.

Content of the invention

For the problems of prior art, this utility model provides a kind of tobacco of utilization wind-force suction filtration Sorting device, can achieve the classification that filamentous form stem and lamellar morphology stem, stalk are signed it can also be used to other tobaccos Classification, integrates selecting crude drugs with winnower destemming label, stem is classified, and the efficiency of separation is high.

The tobacco sorting device that this utility model provides, including Winnowing box body, tangential feeder and point filter screen band； Described Winnowing box body top is connected with tangential feeder；Described point of filter screen band is located at described Winnowing box body upper, this point of filter Guipure penetrates from the side of described Winnowing box body, passes from described Winnowing box body opposite side；Described point of filter screen band passes wind After selecting punch-out equipment body, the lower section of described point of filter screen band is provided with conveyer device.

Fen Sige area communicates Winnowing box body from bottom to top: the debris material area that falls, selecting crude drugs with winnower area, filtering area (dividing filter screen band) and Filamentous form stem and the concentration zones of wind, make material move upwards by the effect of wind-force, and wherein few debris are due to deadweight Power drops to debris material area than more than wind-force effect, and stem is floated with wind upwards and moved to filtering area, enters silk after point filter screen band The concentration zones of shape form stem and wind, collect output by tangential feeder, and tangential feeder is by mixed filamentous form stem Separate with technique wind, thus obtaining filamentous form stem.And the size of lamellar stem is then due to the aperture quilt more than point filter screen band Filter screen band is divided to block and be attached to a point filter screen band lower surface, lamellar stem is taken out of by a point filter screen band and fallen into conveying after Winnowing box body Device, is exported by conveyer device.This utility model can realize continuously, flexibly to stem Classification of materials, overcome tradition and shake It is broken larger, the shortcomings of classification is uneven that what dynamic screening machine existed make.

Sealing for realizing Winnowing box body operates, it is to avoid because a point filter screen band air inlet/outlet selects punch-out equipment body impact selecting crude drugs with winnower, with When avoid tobacco to reveal, the outside of described Winnowing box body is provided with point filter screen band and seals, wherein, in described point of filter screen band Penetrate at Winnowing box body, the upper and lower surface of described point of filter screen band is provided with a point filter screen band sealing；Wear in described point of filter screen band Go out at selecting crude drugs with winnower punch-out equipment body, the upper surface of described point of filter screen band is provided with a point filter screen band sealing, and the lower surface of described point of filter screen band sets It is equipped with rotary gap sealed roller, this rotary gap sealed roller is contacted with described point of filter screen band.Divide the sealing of filter screen band can use flexibility Skin block, skin block is close to a point filter screen belt surface, avoids impact point filter screen band to rotate while realizing sealing.Rotary gap sealed roller Drive without other extrinsic motives, but driven by point filter screen band and rotate, rotary gap sealed roller is moved in the same direction with a point filter screen band, As a point filter screen band moves from left to right, then rotary gap sealed roller rotates clockwise, and rotary gap sealed roller is realizing sealing Meanwhile, a point filter screen band can be coordinated to take lamellar stem from Winnowing box body out of, not interfere with the output of lamellar stem.

For realizing the sealing of Winnowing box body further, it is to avoid the impact to selecting crude drugs with winnower in Winnowing box body for the external wind, described point Filter screen band is endless mesh belt, and annular point filter screen band is arranged in the seal case of endless belt；The charging aperture of described conveyer device and institute The discharging opening stating endless belt seal case connects.Of the present utility model point of filter screen band, only one section passes through Winnowing box body, big portion Divide and run in the seal case of Winnowing box extra-organismal endless belt, so can avoid the interference to selecting crude drugs with winnower area for the external wind.Divide filter Guipure runs in the inside and outside of Winnowing box body simultaneously, and a point filter screen band is driven by a motor reducer, belt speed (10 60) m/ Min is adjustable.

For ease of dropping of the tobacco that is attached on point filter screen band, keep the filter effect of point filter screen band, described Side after dividing filter screen band to pass Winnowing box body is provided with the brush roll for cleaning point filter screen band, using brush roll to a point filter Guipure is cleaned.

In order to remain a point filter effect for filter screen band, after a point filter screen band passes outside another wallboard of Winnowing box body, The angle of point filter screen band and horizontal plane is 30-60 ° and upwardly extends, then by dividing a filter screen cleaning brush body, such material is easier Fallen by brush body brush, fall into conveyer device and discharge.

Preferably, described conveyer device is conveying worm, and described conveying worm is connected with gas lock, falls from a point filter screen band The tobacco falling is transported to through conveying worm discharges after gas lock.

For controlling the selecting crude drugs with winnower wind being passed through in Winnowing box body, described Winnowing box organism bottom is provided with wind adjustable plate, passes through The air quantity to adjust selecting crude drugs with winnower wind for the aperture of regulation wind adjustable plate.For strengthening selecting crude drugs with winnower effect, this utility model also includes material casting roller, institute The charging aperture stating Winnowing box body is connected with material casting roller.Fall debris material area below material casting roller, selecting crude drugs with winnower area, filtering area are (i.e. Point filter screen band) and filamentous form stem and wind concentration zones positioned at the top of material casting roller, material is thrown into selecting crude drugs with winnower area, thing through material casting roller Material is in, in selecting crude drugs with winnower area, the state scattered very much, is conducive to selecting crude drugs with winnower.Material casting roller is by a motor belt wheel drive, rotating speed (10 120) r/min is adjustable, and 0 60 ° of the angle of material casting roller aweather constituency material casting is adjustable.

Low and lift availability in high-grade cigarette for the stem in order to solve tobacco stalk raw material utilization rate, this utility model with Stem processing morphological character is attached most importance to it is intended to study clear and definite stem quality morphology demand, by the filamentous form that sorts out and piece The stem of shape form, uses respectively in medium-to-high grade and Low-end Cigarettes formula, and lifting stem is especially medium-to-high grade in cigarette composition Use ratio in cigarette composition, in the cost that economizes in raw materials, alleviates restriction and the Harm reduction techniques that raw material develops to classic brands The aspects such as tar reduction are respectively provided with significance:

1st, save raw material of cigarette cost

Cabo is directly used in low and middle-end Medicated cigarette by the form of stem at present, and cost of material is with manufacturing cost relatively Low；And tobacco stalk raw material is then mainly utilized by the form of paper process thin slice in high-grade cigarette, manufacturing cost is relatively High.By improving the anomalad of existing processing stem, improve cigarette cut stem form suitability, lifting stem is in medium-to-high grade Medicated cigarette Middle use value, will provide an important channel for reducing raw material of cigarette cost.

2nd, alleviate the high-grade cigarette pressure that there is lack of raw materials

At present, the overall raw tobacco material supply/demand in the whole nation is: " raw tobacco material volume of production is more than the consumption of raw material, excellent Matter raw materials requirement is vigorous, and acute structural imbalance for Nicotiana tabacum L. ", in particular with famous brand name constantly the continuing of development and cigarette structure Lifting, the increase in demand to quality raw materials, the structural inconsistency of Nicotiana tabacum L. resource supply and demand is further exacerbated by.For breaking away from high-grade cigarette product The impact of the inadequate resource of board development, based on this project result of study lifting stem level of processing, improves stem use value, with It is applied to high-grade cigarette product demand, can effectively alleviate the contradiction of high-grade cigarette production development and quality raw materials shortage of resources.

3rd, the effective measures of lowering harm and decreasing coking

The Medicated cigarette of exploitation " high fragrance, low tar, less harmful " is the developing direction of China's cigarette product.Stem is as Medicated cigarette In product, conventional mixing joins product, have the advantages that fillibility is high, flammability is good, flue gas produce tar content, hazardness relatively low, It is allowed to for high-grade cigarette product, can effectively control harmful components and the releasing content of coke tar of Medicated cigarette.

This utility model can realize continuous, steady, uniformly flexibly to stem Classification of materials, overcome traditional shaker What extension set existed makes broken larger, classification inequality, the low shortcoming of classification effectiveness, can meet Cigarette processing material form quality research and add The development need of work, the stem process requirements in the ramuscule Medicated cigarette especially developing rapidly in recent years, meet Cigarette processing to not Same stem typoiogical classification use demand, processing lifting stem utilization rate for Nicotiana tabacum L. provides method and apparatus.In a word, with respect to biography System vibrosieve, this utility model can significantly improve while classifying quality reduce stem make broken, by sort out The stem of qualified form, can improve use ratio in cigarette composition for the stem, and especially develop rapidly in recent years is thin Prop up the stem consumption in Medicated cigarette, the use value in lifting high-grade cigarette.This utility model equipment installation settings is flexible, automatization Level is high, reliable and stable.

Brief description

Fig. 1 implements general structure schematic diagram for this utility model；

Fig. 2 is the top view of Fig. 1.

In figure: 1 jigging conveyer；2 material casting rollers；3 selecting crude drugs with winnower areas；4 points of filter screen bands；5 rotary gap sealed rollers；6 spiral shells Rotation conveyer；7 brush roll；8 points of filter screen band driven rollers；9 points of filter screen band sealings；10th, material pneumatic conveying pipe；11 tangential blankings Device；12 wind adjustable plates；13 Winnowing box bodies；14 endless belt seal cases；15 gas locks；16th, frame；17th, filamentous form stalk Silk and the pooling zone of wind；18th, fall debris material area；19th, observation window.

Specific embodiment

As shown in Figure 1, 2, this utility model includes Winnowing box body 13, tangential feeder 11, material casting roller 2, vibrating transportation Machine 1, point filter screen band 4, frame 16.Winnowing box body 13 is arranged in frame 16, is divided into filamentous form stem and wind from top to bottom Pooling zone 17, filtering area, selecting crude drugs with winnower area 3 and the debris material area 18 that falls；The position in selecting crude drugs with winnower area 3, Winnowing box body 13 open up There is observation window 19, the selecting crude drugs with winnower situation in selecting crude drugs with winnower area can be checked by observation window 19.Winnowing box body 13 is to be welded by wallboard, The size of its inner chamber rectangular dimension is related to production capacity.Jigging conveyer 1 outlet is connected with material casting roller 2 charging aperture, material casting roller 2 It is arranged on the arrival end of Winnowing box body 13, material is thrown to selecting crude drugs with winnower area 3 by material casting roller 2, material casting roller 2 is to dispersion material in separation chamber 3 The angle of material can adjust；, by a motor belt wheel drive, rotating speed (10 120) r/min is adjustable for material casting roller 2, material casting roller to 0 60 ° of the angle of selecting crude drugs with winnower area material casting is adjustable.The bottom of Winnowing box body 13 is provided with wind adjustable plate 12, sends into selecting crude drugs with winnower for adjustment The air quantity of the selecting crude drugs with winnower wind of punch-out equipment body 13.Winnowing box body 13 top is connected with tangential feeder 11 by material pneumatic conveying pipe 10.

As shown in figure 1, in selecting crude drugs with winnower area 3 top, setting point filter screen band 4, point filter screen band 4 constitutes filtering area, on point filter screen band 4 Portion is the pooling zone 17 of filamentous form stem and wind.Divide the hole shape of filter screen band and size can be selected according to the morphological requirements of material Select, the material of guipure can be with metal or other composites.Filter screen band 4 is divided to be endless belt, the both sides wallboard of Winnowing box body 13 On offer the elongated slot passing through for point filter screen band 4, point filter screen band 4 enters Winnowing box body from a framed side wallboard of Winnowing box body 13 In 13 (penetrating on the left of selecting crude drugs with winnower punch-out equipment body in Fig. 1), pass from another framed side wallboard of Winnowing box body 13 that (Fig. 1, selecting crude drugs with winnower punch-out equipment body is right Side passes).At point filter screen band 4 turnover selecting crude drugs with winnower punch-out equipment body 13, outside Winnowing box body 13, it is provided with a point filter screen band sealing 9, its In, enter at Winnowing box body 13 in point filter screen band 4, point filter screen band that all arranges up and down of point filter screen band 4 seals 9；In a point filter screen Band 4 passes at Winnowing box body 13, the top setting point filter screen band sealing 9 of point filter screen band 4, the lower section setting rotation of point filter screen band 4 Turn clearance seal roller 5, rotary gap sealed roller 5 is contacted with point filter screen band 3 lower surface, gap is rotated by a point filter screen band 4 close Envelope roller 5 rotates.Divide filter screen band sealing 9 can use plastics skin block, plastics skin block is close to a point surface for filter screen band 4.Divide filter screen band 4 Supported by 5 rotating rollers, wherein divide filter screen band driven roller 8 to be driven roller, annular divides filter screen band 4 outside Winnowing box body 13, A point filter screen band driven roller 8 is driven to drive annular point filter screen band 4 to move by motor reducer, belt speed (10 60) m/min is adjustable.? After point filter screen band 4 passes Winnowing box body 13, point filter screen band 4 upwardly extends and horizontal plane constitutes 30-60 ° of angle, this to The region of upper extension is provided with brush roll 7, using brush roll 7, a point filter screen band 4 is cleaned, and a point filter screen band 4 upwardly extends and sets Put so that material is easier to be fallen by brush roll 7 brush.As shown in Figure 1, 2, after a point filter screen band 4 passes Winnowing box body 13 upwards The lower section of elongated area is provided with conveying worm 6, and conveying worm 6 outlet is connected with gas lock 15.As shown in figure 1, it is most of Divide filter screen band 4 to run in the endless belt seal case 14 outside separation chamber 3, so can avoid external wind that selecting crude drugs with winnower area is done Disturb, outlet can be opened up in the bottom of endless belt seal case 14, this outlet is connected with the entrance of conveying worm 6 so that dividing The material dropping on filter screen band 4 falls into conveying worm 6.

Operation principle of the present utility model and process are as follows: after equipment completes to install and adjustment possesses use, start first After the special process blower fan stablize air quantity is provided, tangential feeder 11, divide filter screen band driven roller 8, rotary gap sealed roller 5, Brush roll 7, gas lock 15, conveying worm 6, material casting roller 2, jigging conveyer 1 sequence starting each motor respectively.Due to a point filter The motor of guipure driven roller 8, material casting roller 2 and special process blower fan adopts Frequency Converter Control rotating speed, so, use first When, the frequency of converter can be adjusted to general scope, fine control again after the normal strip of equipment.

By belt conveyer scale control constant flow rate stem enter jigging conveyer 1 on, by jigging conveyer 1 will be loose after Stem send into material casting roller 2, stem is thrown into the selecting crude drugs with winnower area 3 of Winnowing box body 13, now will observe material casting roller 2 and throw by material casting roller 2 The situation of material is suitable, then passes through frequency control and its adjustment of rotational speed arrives optimal, the adjustment in combination with air quantity and divide filter screen With the adjustment of 4 belt speed, filamentous form stem is made to pass through the respond well of point filter screen band 4, such process is easier to adjust, Because there are lamellar and thread in stem, the stem of filamentous form is essentially all thread, and its thread close to leaf Silk, after being shed in selecting crude drugs with winnower area 3 by material casting roller 2, stem is in the state scattered very much, under wind action, lamellar stem With thread stem all together with float and rise, when by point filter screen band 4, lamellar stem is stopped and is attached under point filter screen band 4 Surface, thread stem leaf is easily through a point filter screen band 4.It should be noted that the adjustment of point filter screen band 4 belt speed, be to adhere to The normal air quantity that lamellar stem on point filter screen band does not affect in selecting crude drugs with winnower area 3 is principle.In addition, the hole rows chi of point filter screen band 4 Very little whether suitable, can observe through in the thread stem after point filter screen band 4, the quantity containing lamellar stem is judging whether more Change point filter screen band 4 that is to say, that corresponding material can be controlled to pass through by the pore size of point filter screen band 4.

Filter screen band 4 is divided to go out selecting crude drugs with winnower punch-out equipment body 13 with the lamellar stem being attached on guipure, by rotary gap sealed roller 5 Afterwards, filter screen band 4 is divided to become 30-60 ° of angle with ground, in order to the brush roll 7 cleaning guipure rotating, lamellar morphology stem is fallen into In conveying worm 6, discharge after being transported to gas lock 15.Because rotary gap sealed roller 5 is driven by a point filter screen band 4, its rotation Direction is consistent with dividing filter screen band 4, while realizing sealing, will not stop that point filter screen band 4 drives the output of a lamellar stem, by dividing Filter screen band 4 and the output being combined with beneficial to lamellar stem of rotary gap sealed roller 5.

Divide filter screen band 4 before entering Winnowing box body 13, seal 9 through undue filter screen band, go out selecting crude drugs with winnower punch-out equipment body 13 and pass through Divide upper semitight and the rotary gap sealed roller 5 of filter screen band sealing 9, and run in endless belt seal box 14.

Stem, in the selecting crude drugs with winnower effect in selecting crude drugs with winnower area 3, also will be realized by adjusting wind adjustable plate 12, by adjusting wind adjustable plate 12 aperture enters the air quantity in selecting crude drugs with winnower area to control, and a small amount of weight debris can fall into the debris material that falls of the bottom of Winnowing box body 13 Area 18.

Filamentous form stem enters the pooling zone 17 of filamentous form stem and wind by dividing after filter screen band 4, by material pneumatic conveying Pipe 10 is transported to tangential feeder 11, separates after mixed filamentous form stem with technique wind, thus obtaining filamentous form Stem.

In addition, for the stability ensureing classifying quality, normal observation to divide the intact situation of filter screen band 4.

The selecting crude drugs with winnower wind that this utility model uses can be provided by outside it is also possible to self-supporting, and assembling is in tangential feeder Side, wind can recycle, to ensure the requirement of the humiture in wind system.

This utility model is in addition to for stem sifting sort it is also possible to classification for unclassified stores, such as big Leaf Classification, it may also be used for can be used for the classification of the less material of the Nicotiana tabacum L.s such as blade (1mm-50mm).

This utility model can also carry out cascade setting, carries out plural serial stage or parallel connection, i.e. tangential feeder 11 exports, Gas lock 15 exports, the debris material area 18 that falls of Winnowing box body 13 can be connected with another jigging conveyer of the present utility model, right The material of corresponding outlet output carries out secondary classification screening.

In a word, with respect to traditional vibrosieve, this utility model can significantly improve classifying quality and reduce stem simultaneously The stem making broken, qualified form by sorting out, use ratio in cigarette composition for the stem can be improved, especially exist Stem consumption in the ramuscule Medicated cigarette developing rapidly in recent years, the use value in lifting high-grade cigarette.

Claims (9)

1. a kind of tobacco sorting device, including Winnowing box body it is characterised in that: also include tangential feeder and a point filter screen Band；Described Winnowing box body top is connected with tangential feeder；Described point of filter screen band is located at described Winnowing box body upper, this point Filter screen band penetrates from the side of described Winnowing box body, passes from described Winnowing box body opposite side；Described point of filter screen band passes After Winnowing box body, the lower section of described point of filter screen band is provided with conveyer device.

2. tobacco sorting device as claimed in claim 1 it is characterised in that: the outside of described Winnowing box body is provided with point Filter screen band seals, and wherein, penetrates at Winnowing box body in described point of filter screen band, the upper and lower surface of described point of filter screen band is provided with Divide the sealing of filter screen band；Pass at Winnowing box body in described point of filter screen band, the upper surface of described point of filter screen band is provided with a point filter screen Band sealing, the lower surface of described point of filter screen band is provided with rotary gap sealed roller, this rotary gap sealed roller and described point of filter screen Band contact.

3. tobacco sorting device as claimed in claim 1 or 2 it is characterised in that: described point of filter screen band is endless mesh belt, Annular point filter screen band is arranged in the seal case of endless belt；The charging aperture of described conveyer device and described endless belt seal case Discharging opening connects.

4. tobacco sorting device as claimed in claim 1 or 2 it is characterised in that: pass selecting crude drugs with winnower in described point of filter screen band Side after punch-out equipment body is provided with the brush roll for cleaning point filter screen band.

5. tobacco sorting device as claimed in claim 4 it is characterised in that: pass selecting crude drugs with winnower punch-out equipment in described point of filter screen band After body, described point of filter screen band upwardly extends horizontal by 30-60 °, and described brush roll is arranged on this extension.

6. tobacco sorting device as claimed in claim 1 or 2 it is characterised in that: described conveyer device be helical feed Machine, described conveying worm is connected with gas lock.

7. tobacco sorting device as claimed in claim 1 or 2 it is characterised in that: the setting of described Winnowing box organism bottom There is wind adjustable plate.

8. tobacco sorting device as claimed in claim 1 or 2 it is characterised in that: also include material casting roller, described Winnowing box The charging aperture of body is connected with material casting roller.

9. tobacco sorting device as claimed in claim 8 it is characterised in that: the material casting angle of described material casting roller be 0- 60°.