CN112044783A - Device for improving purity of waste tobacco shreds and multistage impurity removal method for waste tobacco shreds - Google Patents
Device for improving purity of waste tobacco shreds and multistage impurity removal method for waste tobacco shreds Download PDFInfo
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- CN112044783A CN112044783A CN202010968118.9A CN202010968118A CN112044783A CN 112044783 A CN112044783 A CN 112044783A CN 202010968118 A CN202010968118 A CN 202010968118A CN 112044783 A CN112044783 A CN 112044783A
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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
- B07B15/00—Combinations of apparatus for separating solids from solids by dry methods applicable to bulk material, e.g. loose articles fit to be handled like bulk material
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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
- A24B3/18—Other treatment of leaves, e.g. puffing, crimpling, cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C7/00—Separating solids from solids by electrostatic effect
- B03C7/02—Separators
- B03C7/08—Separators with material carriers in the form of belts
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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
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
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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
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/04—Spreading out the materials conveyed over the whole surface to be loaded; Trimming heaps of loose materials
Abstract
The invention belongs to the technical field of tobacco, and particularly relates to a device for improving the purity of waste tobacco shreds and a multi-stage impurity removal method for the waste tobacco shreds. The device includes: the tobacco shred spreading and conveying device comprises an inlet tobacco shred conveying belt (2), an outlet tobacco shred conveying belt (23), a tobacco shred spreading and thinning device (3), an uphill frequency conversion vibration conveying device (4), a first electrostatic roller (7), a second electrostatic roller (17), a first negative pressure paper shredding absorbing device (8), a second negative pressure paper shredding absorbing device (18), a first scraper blade (9), a second scraper blade (19), a positive pressure adjustable air blowing device (14), a negative pressure dust removing device (11) and a downhill vibration conveying device (21). The invention realizes three-stage impurity removal treatment on the waste tobacco shreds, can efficiently remove impurities such as shredded paper scraps, tows and the like in the waste tobacco shreds on the premise that quality indexes such as the moisture content of the tobacco shreds, the structure of the tobacco shreds and the like are basically unchanged, and solves the problem that the quality requirements of the recovered tobacco shreds are difficult to meet by adopting manual picking, photoelectric impurity removal and other modes for removing impurities.
Description
Technical Field
The invention belongs to the technical field of tobacco, and particularly relates to a device for improving the purity of waste tobacco shreds and a multi-stage impurity removal method for the waste tobacco shreds.
Background
In the process of rolling cigarettes, cigarettes which have flaws and do not meet the product quality requirements, namely waste cigarettes, are produced for various reasons. As the tobacco shreds in the waste cigarette have higher recycling value, each cigarette production enterprise generally collects the waste cigarette, separates the tobacco shreds from the waste cigarette on a waste cigarette processing line and recycles the tobacco shreds, and other auxiliary materials such as waste paper, waste filter tips and the like with lower utilization value are sent to a waste product recycle bin.
The traditional waste cigarette treatment method mainly comprises a stick beating method and a slitting method, but the residual non-tobacco impurities such as shredded paper scraps, tows and rubber blocks are inevitably contained in the cut tobacco, and the recycling value of the cut tobacco is seriously influenced. In order to remove the sundries such as shredded paper scraps, tows and rubber blocks in the cut tobacco, a specially-assigned person is generally arranged in the waste tobacco processing line to pick the sundries in the cut tobacco, but the sundries such as the shredded paper scraps, the tows and the rubber blocks in the cut tobacco are difficult to completely pick out. Especially for medium and fine waste cigarettes, the shredded paper scraps in the cut tobacco are small, the sundries such as tows and rubber blocks are easy to mix in the cut tobacco, the manual picking difficulty is high, the cut tobacco is difficult to completely pick, and the quality requirement that the purity of the recovered cut tobacco reaches 99.9 percent cannot be met.
Due to the fact that the tobacco shreds and sundries such as shredded paper scraps, tows and rubber blocks have large differences in physical attribute density, it is easy to think that the shredded paper scraps in the tobacco shreds can be easily separated by adopting an air separation mode, but the mode can cause reduction of the moisture content of the tobacco shreds, and further influences the use value of the recovered tobacco shreds.
Therefore, the method has obvious practical significance for improving the use value and economic benefit of the waste tobacco recycled tobacco shreds by eliminating sundries such as shredded paper scraps, tows and the like in the waste tobacco shreds under the condition of ensuring that physical quality indexes such as the moisture content of the tobacco shreds and the structure of the tobacco shreds are not changed, so that the lossless impurity removal of the tobacco shreds is realized, and the purity of the recycled tobacco shreds can be improved.
Disclosure of Invention
The present invention is proposed in order to solve at least one of the above-mentioned problems.
The invention aims to provide a device for improving the purity of waste tobacco shreds and a method for multistage impurity removal of the waste tobacco shreds by applying the device aiming at the defects of the prior art, and mainly solves the problem that the quality requirement of the recovered tobacco shreds is difficult to meet by adopting modes of manual picking, photoelectric impurity removal and the like in the tobacco shred impurity removal process in the waste tobacco processing line of the existing tobacco manufacturing enterprises.
The invention provides a device for improving the purity of waste tobacco shreds, which comprises:
the device comprises an inlet cut tobacco conveying belt 2, an outlet cut tobacco conveying belt 23, a cut tobacco thinning device 3, an uphill frequency conversion vibration conveying device 4, a first electrostatic roller 7, a second electrostatic roller 17, a first negative pressure paper shredding sucking device 8, a second negative pressure paper shredding sucking device 18, a first scraper plate 9, a second scraper plate 19, a positive pressure adjustable air blowing device 14, a negative pressure dust removal device 11 and a downhill vibration conveying device 21;
the moving direction of the cut tobacco in the device for improving the purity of the waste cut tobacco is recorded as from upstream to downstream;
the tobacco shred spreading device 3 is arranged above the upstream end of the upslope variable-frequency vibration conveying device 4, and the upstream end part of the upslope variable-frequency vibration conveying device 4 is connected with the inlet tobacco shred conveying belt 2;
the first electrostatic roller 7 and the second electrostatic roller 17 are respectively arranged right above the ascending variable-frequency vibration conveying device 4 and the descending variable-frequency vibration conveying device 21;
the first scraping plate 9 with the distance of 0-20 mm is arranged beside the first electrostatic roller 7, and a first negative pressure paper shredding device 8 is arranged beside the first scraping plate 9;
the second scraping plate 19 with the distance of 0-20 mm is arranged beside the second electrostatic roller 17, and the second negative-pressure paper-shredding device 18 is arranged beside the second scraping plate 19;
the downslope vibration conveying device 21 is arranged at the downstream of the upslope variable frequency vibration conveying device 4, the height of the downstream end part of the upslope variable frequency vibration conveying device 4 is larger than that of the upstream end part of the downslope vibration conveying device 21, and the positive pressure adjustable air blowing device 14 is arranged between the upslope variable frequency vibration conveying device 4 and the downslope vibration conveying device 21;
the negative pressure dust removal device 11 is arranged above the positive pressure adjustable blowing device 14;
the downstream end part of the downhill vibration conveying device 21 is connected with the outlet cut tobacco conveying belt 23.
The first electrostatic roller 7 and the second electrostatic roller 17 can rotate and adsorb sundries on the ascending variable-frequency vibration conveying device 4 and the descending variable-frequency vibration conveying device 21, the first scraper 9 and the second scraper 19 are respectively used for scraping the sundries on the first electrostatic roller 7 and the second electrostatic roller 17, and the first negative pressure paper sucking and shredding device 8 and the second negative pressure paper sucking and shredding device 18 are respectively used for sucking and discharging the sundries scraped by the first scraper 9 and the second scraper 19.
Preferably, the first scraping plate 9 with the distance of 0-20 mm is arranged at the upstream, downstream or above the first electrostatic roller 7, and a first negative pressure paper-shredding device 8 is arranged above the first scraping plate 9;
the second scraping plate 19 with the distance of 0-20 mm is arranged at the upstream, downstream or above the second electrostatic roller 17, and the second negative pressure paper-shredding device 18 is arranged above the second scraping plate 19.
Preferably, the positive pressure adjustable air blowing device 14 is arranged between the downstream end of the uphill variable frequency vibrating conveyor 4 and the upstream end of the downhill vibrating conveyor 21 both in the horizontal direction and in the vertical direction.
Preferably, the positive pressure adjustable air blowing device 14 is a horizontally arranged cylindrical barrel, the axis of the barrel is parallel to the downstream end of the uphill variable frequency vibration conveying device 14, and the highest position of the barrel wall is provided with a series of air blowing holes 15.
Preferably, the uphill variable-frequency vibration conveying device 4 is provided with a vent hole, and an air injection device is arranged below the vent hole. The air injection device blows the waste tobacco mixture on the ascending variable-frequency vibration conveying device 4 upwards, the height fall of all substances in the waste tobacco mixture is increased, the adsorption capacity of the first electrostatic roller 7 to impurities with lighter tobacco shreds is increased, and the impurity removal effect is improved.
Preferably, the downhill vibration conveyer 21 is provided with a downhill vibration conveyer hole 22, a gas distributor 20 is arranged below the downhill vibration conveyer 21, and one end of the gas distributor 20 is connected with the positive pressure blowing gas pipe 13.
Preferably, the device for improving the purity of the waste cut tobacco further comprises a first synchronous toothed belt 6 and a second synchronous toothed belt 16, one end of each of the first electrostatic roller 7 and the second electrostatic roller 17 is respectively connected with the first synchronous toothed belt 6 and the second synchronous toothed belt 16, and the first synchronous toothed belt 6 and the second synchronous toothed belt 16 provide power for the rotation of the electrostatic rollers.
Preferably, the device for improving the purity of the waste cut tobacco further comprises a dust cover 5, wherein the dust cover 5 is arranged at the top, and the projection of the dust cover covers the ascending variable-frequency vibration conveying device 4 and the descending variable-frequency vibration conveying device 21, so that the dust cover is used for preventing dust.
Preferably, the suction ports of the first negative pressure paper sucking and shredding device 8 and the second negative pressure paper sucking and shredding device 18 are duckbilled, and the suction ports are just positioned above the adjacent positions of the corresponding scraper and the electrostatic roller so as to accurately suck impurities scraped by the scraper.
Preferably, the variable frequency motor is arranged in the uphill variable frequency vibration conveying device 4, and the frequency of the variable frequency motor is 0-50 Hz.
Preferably, the first electrostatic roller 7 or the second electrostatic roller 17 is selected from materials with higher resistance value, such as modified plastics, rubber, silica gel, and the like.
Preferably, the rotation frequency range of the first electrostatic roller 7 or the second electrostatic roller 17 is 0-20 r/min, and the electrostatic strength is 0-40 kv.
Preferably, the vertical distance between the first electrostatic roller 7 and the uphill frequency conversion vibration conveyor belt 4 ranges from 5cm to 10 cm.
Preferably, the vertical distance between the second electrostatic roller 17 and the downhill vibrating conveyor belt 21 is 5-10 cm.
Preferably, the aperture range of the air blowing hole 15 of the positive pressure adjustable air blowing device 14 is 1-10 mm, and the air speed is 0-15 m/s.
Preferably, the aperture range of the holes 22 of the downhill vibration conveying device is 1-10 mm, and the wind speed provided by the gas distributor 20 is 0-15 m/s.
The tobacco shred thinning device 3 is an inverted splayed height limiting baffle which is arranged above the upstream end of the upslope variable-frequency vibration conveying device 4, the tobacco shred thinning device 3 is obliquely arranged in an upslope mode and is parallel to the upslope variable-frequency vibration conveying device 4, and waste tobacco shred mixtures on the upslope variable-frequency vibration conveying device 4 are thinned when passing through the tobacco shred thinning device 3.
The uphill frequency conversion vibration conveying device 4 comprises an uphill vibration conveying belt, the upstream of the vibration belt is low, the downstream of the vibration belt is high, and the height of the vibration belt gradually rises.
The downhill vibrating conveyor 21 comprises a downhill vibrating conveyor belt, which is high upstream and low downstream and exhibits a gradually decreasing height.
The waste cigarette and tobacco shred mixture contains tobacco shreds and non-tobacco impurities, wherein the non-tobacco impurities comprise impurities such as shredded paper scraps, dust and the like which are lighter than the tobacco shreds, and impurities such as tows, metals, rubber blocks and the like which are heavier than the tobacco shreds.
The second aspect of the invention provides a waste tobacco multistage impurity removal method, which is performed by using the device for improving the purity of the waste tobacco in the first aspect of the invention, and comprises the following steps:
A. waste tobacco shred spreading process
Conveying a waste cigarette and tobacco shred mixture containing non-tobacco impurities to the tobacco shred spreading device 3 through the inlet tobacco shred conveying belt 2, and stably transitioning the waste cigarette and tobacco shred mixture to the ascending slope variable-frequency vibration conveying device 4 under the action of the tobacco shred spreading device 3, wherein in the process, the waste cigarette and tobacco shred mixture is spread and conveyed forwards;
B. impurity adsorption and impurity removal process
When the waste tobacco shred mixture is conveyed to the position below the first electrostatic roller 7 through the upslope variable-frequency vibration conveying device 4, impurities lighter than tobacco shreds in the waste tobacco shred mixture are adsorbed on the first electrostatic roller 7, the adsorbed impurities are scraped by the first scraper blade 9, and then the impurities are removed by the first negative-pressure paper-breaking air sucking device 8, so that primary impurity removal treatment of the waste tobacco shreds is realized;
then, when the waste tobacco and tobacco mixture after primary impurity removal is conveyed to the downstream end part of the upslope variable-frequency vibration conveying device 4, the waste tobacco and tobacco mixture starts to do parabolic motion, in the process, positive-pressure gas of the positive-pressure adjustable blowing device 14 is used for blowing up impurities lighter than tobacco shreds in the waste tobacco and tobacco mixture, the impurities are removed by the negative-pressure dust removing device 11, the impurities heavier than the tobacco shreds in the waste tobacco and tobacco mixture drop below, and other substances in the waste tobacco and tobacco mixture drop onto the downslope vibration conveying device 21 through parabolic motion, so that secondary impurity removal and dust removal treatment of the waste tobacco and tobacco is realized;
and the downhill vibration conveying device 21 continues to convey the waste cigarette and tobacco shred mixture subjected to the secondary impurity removal, in the process, impurities lighter than tobacco shreds are adsorbed on the second electrostatic roller 17, the impurities are scraped by the second scraper 19, and then the impurities are removed by the second negative-pressure paper absorbing and shredding device 18, so that the three-stage impurity removal treatment of the waste tobacco shreds is realized.
Preferably, the cut tobacco subjected to the first-stage, second-stage and third-stage adsorption impurity removal is conveyed to a cut tobacco recycling process through an outlet cut tobacco conveying belt 23.
Preferably, an air vent is arranged on the upward slope variable frequency vibration conveying device 4, an air injection device is arranged below the upward slope variable frequency vibration conveying device 4, the air injection device blows the waste cigarette and tobacco shred mixture on the upward slope variable frequency vibration conveying device 4 upwards, the height drop of all substances in the waste cigarette and tobacco shred mixture is increased, the adsorption capacity of the first electrostatic roller 7 to impurities lighter than tobacco shreds is increased, and the impurity removal effect is improved.
Preferably, a downhill vibration conveying device hole 22 is formed in the downhill vibration conveying device 21, an air distributor 20 is arranged below the downhill vibration conveying device 21, one end of the air distributor 20 is connected with the positive pressure air blowing pipe 13, the air distributor 20 blows the waste cigarette and tobacco shred mixture on the downhill vibration conveying device 21 upwards, the height difference of all substances in the waste cigarette and tobacco shred mixture is increased, the adsorption capacity of the second electrostatic roller 17 on impurities lighter than tobacco shreds is increased, and the impurity removing effect is improved.
Preferably, according to the quality requirement of the purity of the cut tobacco, at least one of the following measures is taken to further improve the purity of the cut tobacco:
the method comprises the steps of enhancing the electrostatic strength of the first electrostatic roller 7, enhancing the electrostatic strength of the second electrostatic roller 17, reducing the vertical distance between the first electrostatic roller 7 and the uphill variable-frequency vibration conveying device 4, reducing the vertical distance between the second electrostatic roller 17 and the downhill vibration conveying device 21, enhancing the vibration strength or frequency of the uphill variable-frequency vibration conveying device 4, enhancing the vibration strength or frequency of the downhill vibration conveying device 21, changing the aperture and the wind speed of the positive-pressure adjustable blowing device 14, enhancing the air injection pressure of the gas distributor 20, changing the aperture of an upper vent hole of the uphill variable-frequency vibration conveying device 4, or changing the aperture of a downhill vibration conveying device hole 22.
The technical scheme can be freely combined on the premise of no contradiction.
The invention has the following beneficial effects:
the invention designs a device for improving the purity of waste tobacco shreds and a method for multistage impurity removal of the waste tobacco shreds by applying the device. Wherein, the device is designed to be characterized in that: firstly, the method comprises the following steps: the use of a vibrating conveyor with a slope can improve the separation effect on the waste cut tobacco mixture because due to the difference in physical properties, the substances can be more easily separated on a vibrating conveyor with a slope than on a horizontal vibrating conveyor; secondly, the method comprises the following steps: a positive pressure adjustable air blowing device 14 is arranged between the ascending variable-frequency vibration conveying device 4 and the descending variable-frequency vibration conveying device 21, so that waste tobacco and cut tobacco mixture can be layered and separated in the height drop conveying process based on the characteristics of the area difference, the weight difference and the suspension speed difference of cut tobacco, shredded paper and other impurities while the waste tobacco and cut tobacco mixture is in parabolic motion.
The device for improving the purity of the waste tobacco shreds is developed by utilizing principles such as electrostatic adsorption, winnowing impurity removal, heavy impurity removal and the like, three-stage impurity removal treatment of the waste tobacco shreds is realized, impurities such as shredded paper scraps, tows and the like in the waste tobacco shreds can be efficiently removed on the premise that quality indexes such as the moisture content of the tobacco shreds, the structure of the tobacco shreds and the like are basically unchanged, the purity and the use value of the recovered tobacco shreds are effectively improved, and the problem that the quality requirements of the recovered tobacco shreds are difficult to meet by adopting manual picking, photoelectric impurity removal and other modes for impurity removal in a waste tobacco treatment line of an existing tobacco production enterprise is solved.
The multistage impurity removal method has the characteristics of nondestructive impurity removal of the tobacco shreds, high purity of the tobacco shreds, high recovery yield of the tobacco shreds, good recovery quality of the tobacco shreds, high automation level and the like.
The device and the multistage impurity removal method are suitable for waste cigarette processing lines with different processing flows, are suitable for impurity removal processes for processing waste cigarettes with different specifications such as ' thick ', medium and thin ' branches, are also suitable for impurity removal and recovery processes for the waste cigarettes on line, and have wide application prospects and popularization and application values.
The invention also has the characteristics of simple device structure, practical method, strong operability, small occupied space, easy field reconstruction and the like.
Drawings
Fig. 1 is a schematic view of the overall structure of an apparatus for improving the purity of waste cut tobacco in embodiment 1.
List of reference numerals:
2-inlet cut tobacco conveyer belt; 3-tobacco shred spreading device; 4-an uphill variable-frequency vibration conveying device; 5-a dust cover; 6-a first synchronous toothed belt; 7-a first electrostatic roller; 8-a first negative pressure shredded paper absorbing device; 9-a first scraper; 10-heavy sundries collecting box; 11-negative pressure dust removing device; 12-negative pressure dust removal air pipe; 13-positive pressure insufflation trachea; 14-positive pressure adjustable blowing device; 15-air blowing holes; 16-a second timing belt; 17-a second electrostatic roller; 18-a second negative pressure shredding device; 19-a second scraper; 20-a gas distributor; 21-downhill vibration transmission; 22-downhill vibration transmission hole; 23-outlet cut tobacco conveyer belt.
Detailed Description
The present invention will be further described with reference to the following embodiments.
Example 1
As shown in fig. 1, example 1 is an apparatus for improving the purity of waste cut tobacco, comprising:
the device comprises an inlet cut tobacco conveying belt 2, an outlet cut tobacco conveying belt 23, a cut tobacco thinning device 3, an uphill frequency conversion vibration conveying device 4, a first electrostatic roller 7, a second electrostatic roller 17, a first synchronous toothed belt 6, a second synchronous toothed belt 16, a first negative pressure paper absorbing and shredding device 8, a second negative pressure paper absorbing and shredding device 18, a first scraper blade 9, a second scraper blade 19, a positive pressure adjustable air blowing device 14, a negative pressure dust removing device 11, a downhill vibration conveying device 21, a dust cover 5, a heavy sundries collecting box 10, a negative pressure dust removing air pipe 12, a positive pressure air blowing air pipe 13 and a gas distributor 20;
the tobacco shred spreading device 3 is arranged at the front end of an upslope variable-frequency vibration conveying device 4, and the upslope variable-frequency vibration conveying device 4 is connected with an inlet tobacco shred conveying belt 2;
the first static roller 7 and the second static roller 17 are respectively arranged right above the ascending slope variable frequency vibration conveying device 4 and the descending slope vibration conveying device 21, and one end of the first static roller 7 and one end of the second static roller 17 are respectively connected with the first synchronous toothed belt 6 and the second synchronous toothed belt 16;
the downstream of the first electrostatic roller 7 is closely provided with a first scraper 9 with a distance of 2mm, and a first negative pressure paper-shredding device 8 is arranged above the first scraper 9;
the downstream of the second electrostatic roller 17 is closely provided with a second scraper 19 with a distance of 2mm, and the second negative pressure paper-shredding device 18 is arranged above the second scraper 19.
The positive pressure adjustable air blowing device 14 is arranged between the ascending variable frequency vibration conveying device 4 and the descending variable frequency vibration conveying device 21 in the horizontal direction and the vertical direction, and one end of the positive pressure adjustable air blowing device is connected with the positive pressure air blowing pipe 13;
the negative pressure dust removing device 11 is arranged above the positive pressure adjustable blowing device 14, and one end of the negative pressure dust removing device is connected with the negative pressure dust removing air pipe 12;
the downhill vibration conveying device 21 is connected with an outlet cut tobacco conveying belt 23, a through downhill vibration conveying device hole 22 is arranged on a vibration surface of the downhill vibration conveying device, a gas distributor 20 is arranged right below the downhill vibration conveying device, and one end of the gas distributor 20 is connected with the positive pressure blowing gas pipe 13;
the dust cover 5 is arranged at the top, and the projection of the dust cover covers the ascending variable-frequency vibration transmission device 4 and the descending variable-frequency vibration transmission device 21.
The frequency of the variable frequency motor of the uphill variable frequency vibration conveying device 4 is 30 Hz.
The first electrostatic roller 7 and the second electrostatic roller 17 are made of rubber materials.
The rotation frequency of the first electrostatic roller 7 and the second electrostatic roller 17 is 10r/min, and the electrostatic strength is 20 kv.
The first electrostatic roller 7 and the second electrostatic roller 17 are respectively arranged right above the uphill frequency conversion vibration conveyor belt 4 and the downhill vibration conveyor belt 21, and the distance range is 5 cm.
The positive-pressure adjustable air blowing device 14 is arranged between the ascending variable-frequency vibration conveying device 4 and the descending variable-frequency vibration conveying device 21, the positive-pressure adjustable air blowing device 14 is a horizontally arranged cylindrical barrel, the axis of the barrel is parallel to the downstream end part of the ascending variable-frequency vibration conveying device 14, a series of air blowing holes 15 are formed in the highest position of the barrel wall, the diameter of each air blowing hole 15 is 6mm, and the air speed is 3 m/s.
The aperture of the downhill vibration transmitting device hole 22 is 5mm, and the wind speed provided by the gas distributor 20 is 10 m/s.
Example 2
A multi-stage impurity removal method for waste tobacco shreds comprises the steps that tobacco shreds and non-tobacco impurities are contained in a waste tobacco shred mixture, wherein the non-tobacco impurities comprise impurities such as shredded paper scraps and dust which are lighter than the tobacco shreds, and impurities such as tows, metals and rubber blocks which are heavier than the tobacco shreds; the multistage impurity removal method is carried out by using the device for improving the purity of the waste tobacco shreds in embodiment 1, and comprises the following steps:
A. waste tobacco shred spreading process
The waste tobacco mixture is conveyed to a tobacco shred spreading device 3 through an inlet tobacco shred conveying belt 2, and is stably and quickly transited to an upslope variable frequency vibration conveying device 4 under the action of the tobacco shred spreading device 3, so that the waste tobacco mixture is quickly and uniformly spread and conveyed forwards;
B. impurity adsorption and impurity removal process
When the waste tobacco shred mixture is conveyed to the lower part of the first electrostatic roller 7 through the upslope variable-frequency vibration conveying device 4, the paper scrap and the tow sundries in the waste tobacco shred mixture are adsorbed and attached to the first electrostatic roller 7 by utilizing the adsorption capacity of the first electrostatic roller 7, the sundries are timely scraped by the first scraper blade 9, and then the sundries are removed by utilizing the first negative-pressure paper-breaking air suction device 8, so that the primary impurity removal treatment of the waste tobacco shreds is realized;
when the waste tobacco and cut tobacco mixture is conveyed to the tail end of the upslope variable-frequency vibration conveying device 4, in the parabolic movement process of the waste tobacco and by utilizing the characteristics of the area difference, the weight difference and the suspension speed difference of the cut tobacco, shredded paper scraps, tows, metal objects, dust and other impurities, the positive pressure gas of the positive pressure adjustable gas blowing device 14 is used for blowing the shredded paper scraps, dust and other impurities upwards in the waste tobacco, the negative pressure dust removing device 11 is used for removing the shredded paper scraps, dust and other impurities, and the heavier tows, metal and other impurities fall into the heavy impurity collecting box 10, so that the secondary impurity removal and dust removal treatment of the waste tobacco is realized;
the cut tobacco subjected to secondary impurity removal and dust removal is conveyed to a downhill vibration conveying device 21, the air is blown upwards to a downhill vibration conveying device hole 22 by using an air distributor 20, so that the cut tobacco and sundries such as shredded paper scraps, tows and dust are layered and separated in the height-fall conveying process, the shredded paper scraps and the tows sundries are adsorbed and attached to a second electrostatic roller 17, the second sundries are timely scraped by a second scraper blade 19, and then the sundries are removed by using a second negative pressure shredded paper suction device 18, so that the three-stage impurity removal treatment of the waste cut tobacco is realized;
C. tobacco shred recycling process
The pure cut tobacco subjected to the first-stage, second-stage and third-stage adsorption impurity removal is conveyed to a cut tobacco recycling process through an outlet cut tobacco conveying belt 23;
D. tobacco shred impurity removal and purification process
According to the quality requirement of the purity of the cut tobacco, the vertical distance between the first electrostatic roller 7 and the ascending slope variable-frequency vibration conveying device 4 and the vertical distance between the second electrostatic roller 17 and the descending slope vibration conveying device 21 are increased; the pressure of the positive pressure blowing air pipe 13 and the negative pressure dedusting air pipe 12 is enhanced, so that the aim of improving the purity of the tobacco shreds is further fulfilled.
Example 3
The experimental object is a waste cigarette processing line with the material flow of 2000kg/h in a certain cigarette production plant, the waste cigarette is a fine cigarette with the processing amount of 4000kg, the moisture content of the cut tobacco is 12.18 percent, and the cut tobacco integral rate is 66.14 percent; the standard requirement of the purity of the tobacco shreds of the recycled tobacco shreds with the fine branch specification is 99.90 percent. The waste cigarette treatment capacity of the specification of the fine cigarette is divided into two equal parts, the waste cigarette cut tobacco is purified and subjected to impurity removal treatment by adopting two modes of manual picking and the impurity removal method in the embodiment 2 of the invention, and the results after treatment are compared and shown in the table 1.
TABLE 1 comparative analysis of results after manual picking and impurity removal treatment of example 2 of the invention
As can be seen from Table 1, the two impurity removal modes have no obvious influence on the moisture content and the whole tobacco shred percentage of the processed tobacco shred quality indexes, but the impurity removal method of the embodiment 2 of the invention has obvious advantages in the aspects of the purity and the recovery rate of the tobacco shreds.
Example 4
Compared with the embodiment 1, the device for improving the purity of the waste tobacco shreds is characterized in that the distance between a first electrostatic roller 7 and an ascending slope variable-frequency vibration conveying device 4 is 4cm, and the distance between a second electrostatic roller 17 and a descending slope vibration conveying device 21 is 7 cm; the wind speed of the positive pressure blowing device 13 is 5 m/s.
Example 5
The experimental object is a waste cigarette processing line with a material flow of 3000kg/h in a certain cigarette production plant, the waste cigarette is a coarse cigarette with a processing amount of 6000kg, the water content of cut tobacco is 12.28 percent, and the cut tobacco whole tobacco rate is 80.26 percent; the standard requirement of the purity of the cut tobacco of the coarse cut tobacco specification is 99.90 percent. The waste cigarette treatment capacity of the coarse cigarette with the specification is divided into two equal parts, the impurity removal treatment is respectively carried out on the waste cigarette tobacco shreds by adopting two modes of photoelectric impurity removal and impurity removal by adopting the device in the embodiment 4 of the invention, and the results after the treatment are compared in a table 2.
TABLE 2 comparison analysis of results after photoelectric impurity removal and impurity removal by the apparatus of example 4 of the present invention
As can be seen from Table 2, the purity of the cut tobacco is high in both impurity removal modes, and the consistency of the whole cut tobacco and the cut tobacco before impurity removal is good, but the consistency of the cut tobacco and the cut tobacco before impurity removal is good in the moisture content of the cut tobacco by adopting the method, and the method has great advantages in the yield of the recovered cut tobacco.
From the embodiment 3 and the embodiment 5, the device for improving the purity of the waste tobacco and the impurity removal method can effectively ensure the quality requirements of the purity of the recovered tobacco, the recovery rate of the tobacco, the structure of the tobacco, the retention rate of the water content of the tobacco and the like, realize the automatic processing level of a waste tobacco processing line, and improve the utilization value of the recovered tobacco.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a promote device of useless cigarette pipe tobacco purity, its characterized in that, promote device of useless cigarette pipe tobacco purity includes:
the tobacco shred spreading and conveying device comprises an inlet tobacco shred conveying belt (2), an outlet tobacco shred conveying belt (23), a tobacco shred spreading and thinning device (3), an uphill frequency conversion vibration conveying device (4), a first electrostatic roller (7), a second electrostatic roller (17), a first negative pressure paper shredding absorbing device (8), a second negative pressure paper shredding absorbing device (18), a first scraper blade (9), a second scraper blade (19), a positive pressure adjustable air blowing device (14), a negative pressure dust removing device (11) and a downhill vibration conveying device (21);
the moving direction of the cut tobacco in the device for improving the purity of the waste cut tobacco is recorded as from upstream to downstream;
the tobacco shred spreading device (3) is arranged above the upstream end of the upslope variable-frequency vibration conveying device (4), and the upstream end part of the upslope variable-frequency vibration conveying device (4) is connected with the inlet tobacco shred conveying belt (2);
the first electrostatic roller (7) and the second electrostatic roller (17) are respectively arranged right above the ascending variable-frequency vibration conveying device (4) and the descending variable-frequency vibration conveying device (21), and the first electrostatic roller (7) and the second electrostatic roller (17) can rotate and adsorb sundries on the ascending variable-frequency vibration conveying device (4) and the descending variable-frequency vibration conveying device (21);
the first scraping plate (9) with the distance of 0-20 mm is arranged beside the first electrostatic roller (7), and a first negative pressure paper shredding device (8) is arranged beside the first scraping plate (9);
a second scraping plate (19) with the distance of 0-20 mm from the second electrostatic roller (17) is arranged beside the second electrostatic roller, and a second negative-pressure paper-shredding device (18) is arranged beside the second scraping plate (19);
the downslope variable-frequency vibration conveying device (21) is arranged at the downstream of the upslope variable-frequency vibration conveying device (4), the height of the downstream end part of the upslope variable-frequency vibration conveying device (4) is larger than that of the upstream end part of the downslope variable-frequency vibration conveying device (21), and the positive-pressure adjustable air blowing device (14) is arranged between the upslope variable-frequency vibration conveying device (4) and the downslope variable-frequency vibration conveying device (21);
the negative pressure dust removal device (11) is arranged above the positive pressure adjustable blowing device (14);
the downhill vibration conveying device (21) is connected with the outlet cut tobacco conveying belt (23).
2. Device for improving the purity of cut tobacco waste according to claim 1, characterized in that the adjustable air blowing device (14) with positive pressure is arranged between the downstream end of the up-slope variable-frequency vibrating conveyor (4) and the upstream end of the down-slope vibrating conveyor (21) both in the horizontal direction and in the vertical direction.
3. The device for improving the purity of the waste cut tobacco according to claim 2, wherein the positive pressure adjustable air blowing device (14) is a horizontally arranged cylindrical barrel, the axis of the barrel is parallel to the downstream end part of the upslope variable frequency vibration conveying device (14), and the highest part of the barrel wall is provided with a series of air blowing holes (15).
4. The device for improving the purity of the waste cut tobacco according to claim 1, wherein the uphill variable-frequency vibration conveying device (4) is provided with an air vent, and an air injection device is arranged below the uphill variable-frequency vibration conveying device.
5. The device for improving the purity of waste cut tobacco according to claim 1, wherein the downhill vibrating conveyor (21) is provided with a downhill vibrating conveyor hole (22), a gas distributor (20) is arranged below the downhill vibrating conveyor (21), and one end of the gas distributor (20) is connected with the positive pressure blowing gas pipe (13).
6. Device for improving the purity of cut tobacco waste according to claim 1, characterized in that it further comprises a first toothed timing belt (6), a second toothed timing belt (16),
one ends of the first static roller (7) and the second static roller (17) are respectively connected with the first synchronous toothed belt (6) and the second synchronous toothed belt (16).
7. A waste tobacco multistage impurity removal method is characterized by being carried out by using the device for improving the purity of the waste tobacco according to claim 1, and comprises the following steps:
A. waste tobacco shred spreading process
Conveying a waste cigarette and tobacco shred mixture containing non-tobacco impurities to the tobacco shred spreading device (3) through the inlet tobacco shred conveying belt (2), and stably transitioning the waste cigarette and tobacco shred mixture to the upslope variable-frequency vibration conveying device (4) under the action of the tobacco shred spreading device (3), wherein in the process, the waste cigarette and tobacco shred mixture is spread and conveyed forwards;
B. impurity adsorption and impurity removal process
When the waste tobacco shred mixture is conveyed to the position below the first electrostatic roller (7) through the upslope variable-frequency vibration conveying device (4), impurities lighter than tobacco shreds in the waste tobacco shred mixture are adsorbed on the first electrostatic roller (7), the adsorbed impurities are scraped by the first scraper (9), and then the impurities are removed by the first negative-pressure paper-breaking air sucking device (8), so that primary impurity removal treatment of the waste tobacco shreds is realized;
then, when the waste tobacco and tobacco mixture after primary impurity removal is conveyed to the downstream end part of the upslope variable-frequency vibration conveying device (4), the waste tobacco and tobacco mixture starts to do parabolic motion, in the process, impurities lighter than tobacco shreds in the waste tobacco and tobacco mixture are blown upwards by positive pressure gas of the positive pressure adjustable blowing device (14), the impurities are removed by the negative pressure dust removing device (11), the impurities heavier than the tobacco shreds in the waste tobacco and tobacco mixture drop below, and other substances in the waste tobacco and tobacco mixture drop onto the downslope vibration conveying device (21) through parabolic motion, so that secondary impurity removal and dust removal treatment of the waste tobacco and tobacco shreds is realized;
and the downhill vibration conveying device (21) continues to convey the waste tobacco and tobacco shred mixture subjected to secondary impurity removal, in the process, impurities lighter than tobacco shreds are adsorbed on the second electrostatic roller (17), the impurities are scraped by the second scraper (19), and then the impurities are removed by the second negative-pressure paper sucking and shredding device (18), so that tertiary impurity removal treatment of the waste tobacco shreds is realized.
8. The multistage impurity removal method according to claim 7, wherein an air vent is arranged on the ascending variable-frequency vibration conveying device (4), an air injection device is arranged below the air vent, the air injection device blows up the waste tobacco and tobacco mixture on the ascending variable-frequency vibration conveying device (4), and the height drop of each substance in the waste tobacco and tobacco mixture is increased, so that the adsorption capacity of impurities, lighter than tobacco, of the first electrostatic roller (7) is increased, and the impurity removal effect is improved.
9. The multistage impurity removal method according to claim 7, wherein a downhill vibrating conveyor hole (22) is formed in the downhill vibrating conveyor (21), a gas distributor (20) is arranged below the downhill vibrating conveyor (21), one end of the gas distributor (20) is connected with a positive pressure blowing gas pipe (13), and the gas distributor (20) blows a waste cigarette and tobacco mixture on the downhill vibrating conveyor (21) upwards to increase the height difference of each substance in the waste cigarette and tobacco mixture, so that the adsorption amount of impurities lighter than tobacco by the second electrostatic roller (17) is increased, and the impurity removal effect is improved.
10. The multi-stage impurity removal method according to any one of claims 7 to 9, wherein at least one of the following measures is taken to further improve the purity of the cut tobacco according to the quality requirement of the purity of the cut tobacco:
the reinforcing the static intensity of first static roller (7), reinforcing the static intensity of second static roller (17), reduce first static roller (7) with vertical spacing between uphill frequency conversion conveying device (4), reducing second static roller (17) with vertical spacing between downhill path vibration conveying device (21), reinforcing the vibration intensity or frequency of uphill frequency conversion vibration conveying device (4), reinforcing the vibration intensity or frequency of downhill path vibration conveying device (21), changing aperture and wind speed of the adjustable gas blowing device of malleation (14), reinforcing the jet-propelled pressure of gas distributor (20), changing the aperture of air vent on uphill frequency conversion vibration conveying device (4), or changing the aperture of downhill path vibration conveying device hole (22).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010968118.9A CN112044783A (en) | 2020-09-15 | 2020-09-15 | Device for improving purity of waste tobacco shreds and multistage impurity removal method for waste tobacco shreds |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010968118.9A CN112044783A (en) | 2020-09-15 | 2020-09-15 | Device for improving purity of waste tobacco shreds and multistage impurity removal method for waste tobacco shreds |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112916399A (en) * | 2021-01-19 | 2021-06-08 | 贵州中成科技开发有限公司 | Tobacco shred sundry sorting machine |
| CN113693257A (en) * | 2021-07-30 | 2021-11-26 | 南京焦耳科技有限责任公司 | Material static on-line wire removing method |
| CN114468340A (en) * | 2021-12-28 | 2022-05-13 | 云南研联机电有限公司 | Electrostatic hemp thread removing machine |
| CN114832927A (en) * | 2022-04-29 | 2022-08-02 | 厦门依加成科技有限公司 | System and method for separating silk and evaluating quality |
| CN114947187A (en) * | 2022-06-07 | 2022-08-30 | 湖北中烟工业有限责任公司 | Novel thin cigarette tobacco return-stripping device |
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2020
- 2020-09-15 CN CN202010968118.9A patent/CN112044783A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112916399A (en) * | 2021-01-19 | 2021-06-08 | 贵州中成科技开发有限公司 | Tobacco shred sundry sorting machine |
| CN113693257A (en) * | 2021-07-30 | 2021-11-26 | 南京焦耳科技有限责任公司 | Material static on-line wire removing method |
| CN114468340A (en) * | 2021-12-28 | 2022-05-13 | 云南研联机电有限公司 | Electrostatic hemp thread removing machine |
| CN114832927A (en) * | 2022-04-29 | 2022-08-02 | 厦门依加成科技有限公司 | System and method for separating silk and evaluating quality |
| CN114832927B (en) * | 2022-04-29 | 2023-06-02 | 厦门依加成科技有限公司 | System and method for separating and evaluating quality of filars |
| CN114947187A (en) * | 2022-06-07 | 2022-08-30 | 湖北中烟工业有限责任公司 | Novel thin cigarette tobacco return-stripping device |
| CN114947187B (en) * | 2022-06-07 | 2023-02-03 | 湖北中烟工业有限责任公司 | Fine cigarette tobacco shred return stripping device |
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