US3608716A - Recirculating pneumatic separator - Google Patents

Recirculating pneumatic separator Download PDF

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Publication number
US3608716A
US3608716A US794000*A US3608716DA US3608716A US 3608716 A US3608716 A US 3608716A US 3608716D A US3608716D A US 3608716DA US 3608716 A US3608716 A US 3608716A
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United States
Prior art keywords
air
chamber
particles
separating
separating chamber
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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.)
Expired - Lifetime
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US794000*A
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English (en)
Inventor
Lorne A Rowell
Peter A Tillich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Tobacco Company of Canada Ltd
Imperial Tobacco Company of Great Britain and Ireland Ltd
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Imperial Tobacco Company of Great Britain and Ireland Ltd
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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
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • B07B4/025—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall the material being slingered or fled out horizontally before falling, e.g. by dispersing elements
    • 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
    • A24B5/10—Stripping tobacco; Treatment of stems or ribs by crushing the leaves with subsequent separating

Definitions

  • This invention relates to a recirculating pneumatic separator which is particularly designed for separating threshed tobacco leaves form the heavier tobacco parts.
  • the lighter tobacco fraction is carried up by air which is recirculated through the separator and the heavier tobacco function falls to an endless belt and is separately conveyed out of the separator.
  • Means is provided for accurately controlling the air velocity in the separation chamber and for ensuring complete separation of the tobacco fractions by means of an air jet impeller.
  • a further drawback of the separation system disclosed in our prior patent is the large quantity of air which is continuously required for operation of the separator. It can be appreciated that in a plant where a large number of separators may be operating, large quantities of air are drawn in from the plant, this air being continuously exhausted to the outside atmosphere. Thus, there was a clear need for a pneumatic separator wherein a recirculating air system is provided thereby obviating the need for a continuous supply of outside air.
  • a pneumatic separator in which the air used to efiect the separation of the lighter particle fraction from the heavier particle fraction is recirculated so that a minimum quantity of outside makeup air is required.
  • the lighter separated particles comprising the threshed tobacco leaves pass upwardly with the air and there is provided a rotating air screen through which the conveying air passes to be recirculated through the separating chamber, with the particles passing through a separate air lock and out of the pneumatic separator through an independent air-conveying system.
  • a rotating air screen through which the conveying air passes to be recirculated through the separating chamber, with the particles passing through a separate air lock and out of the pneumatic separator through an independent air-conveying system.
  • an endless foraminous belt extending across the lower end of the separating chamber and the heavier tobacco particles which drop down on to the belt are conveyed outwardly through a separate outlet and carried off by a separate air conveying system.
  • a diffusion plate which consists of a series of spaced vanes extending across the separation chamber. These vanes form a diffuser plate creating an area of pressure differential. As the air passes upwardly between the vanes in the diffuser plate the airflow velocity tends to become more even across the chamber in thatas the amount of air passing through a given area increases, the resistance to flow increases and a greater amount of air tends to pass through other areas of the difluser plate.
  • the air moving upwardly through the separation chamber must also pass through the lower and upper runs of the endless foraminous belt and this belt also serves to create areas of pressure differential and functions to even out the air velocity across the separation chamber.
  • Means for diverting a portion of the air which serves to convey the heavy particle fraction out of the pneumatic separator. This diverted air is replaced by a portion of the main separating air which flows outwardly with the heavier particle fraction and serves to draw the heavy particle fraction out into the outlet. Makeup air from the outside atmosphere is drawn into the separating chamber to replace the main separating air which is passed out with the heavier particle fraction and it is this makeup air which provides the air jet impeller creating the secondary separating stage within the separating chamber.
  • Another object of the present invention is to provide a recirculating separator which is capable of separating threshed tobacco leaves from the heavier stem particles by providing an air jet impeller which creates a secondary separating stage so that the particles to be separated are passed across the separating chamber twice.
  • FIG. 1 is a perspective view of the recirculating pneumatic separator
  • FIG. 2 is a sectional view through the separator and FIG. 3 is an end elevational view thereof.
  • the recirculating pneumatic separator is housed within a casing structure 1 and the material to be segregated by the pneumatic separator is fed into the casing structure through an inlet 2, more clearly seen in FIG. 2.
  • a rotary screen 3 with a mesh of sufficiently fine size that it prevents the material being brought into the separator from passing therethrough.
  • the conveying air which brings the material into the separator passes through the screen and out through an open end 4 of the rotary screen.
  • the conveying air for the material being fed into the separator forms a closed circuit, passing into the separator through the inlet 2 and out through the passageway 4.
  • an air lock 5 comprising a plurality of rotating gates which permit the material to be segregated to pass therethrough but prevents any substantial quantity of the conveying air from passing through into the main portion of the pneumatic separator.
  • the material to be subjected to treatment within the pneumatic separator passes downwardly where it is engaged by a rotary impeller 6 and thrust by the vanes of the impeller into the main chamber 7 of the pneumatic separator.
  • the impeller imparts to the particles of material to be separated a substantial velocity, for example, within the range of 1,000 to 1,200 feet per minute. This prevents the heavier particles from immediately dropping to the bottom of the chamber and causes the particles to pass across the chamber and be subjected to the upwardly passing air currents within the main separating chamber 7.
  • the lighter particle fraction is carried upwardly by the upwardly moving air currents as shown at 8 whereas the heavier particles fraction passes across the chamber as shown at 9 and may abut the wall 10 of the chamber which is opposite the impeller 6.
  • the heavier particles may drop down on to an endless foraminous belt 1 l which is supported by and driven from end rolls 12 and 13.
  • the heavier particle fraction rests on the foraminous belt and is carried therealong to the heavier particle fraction outlet 14.
  • the heavier particles pass out of the pneumatic separator through the outlet 14 and along the passageway 15 and are carried therealong by conveying air which forms a separate external circuit as shown by the arrows 16.
  • the inlet for this heavier particle fraction conveying system is shown at 17 and the conveying air passes along the passageway 17 into the chamber 18 where a portion of the air is drawn ofi as shown at 19 for a purpose which will be explained more fully hereinafter.
  • the main portion of the air coming in through the inlet 17 passes through chamber 18 and back through the passageway 20 to the heavier particle fraction inlet 14.
  • the lighter particle fraction passes upwardly through the main separating chamber 7 with the air currents passing upwardly through the chamber and through a substantially tangential passageway 21 into a substantially cylindrically shaped chamber 22.
  • Centrally disposed within the chamber 22 is a cylindrical screen 23 which is mounted for rotation within the chamber.
  • the screen 23 is of a mesh size insufficient to permit the passage of the lighter fraction particles which are carried by the air current but permit the air to pass therethrough into the central portion 24 and thence outwardly through the open ends of the rotary screen. Referring to FIG. 3 it can be seen that the air passing through the rotary screen 23 and through the open ends of the screen passes into downwardly extending ducts 25 and 26 and into the outer ends of a fan casing 27.
  • This recirculating circuit comprises the main chamber 7, the passageway 21, through the rotary screen 23, outwardly through the open ends of the screen and downwardly through ducts 25 and 26, through the open ends of the fan casing 27 and through the fan outlet 28 back through the lower end of the separating chamber 7.
  • the lighter particles fraction passes downwardly within the cylindrical chamber 22 and into an air lock 29, through the air lock and into the lighter particle faction passageway 30.
  • the portion of the heavier particle fraction conveying air which is diverted into the lighter particle fraction conveying circuit is replaced by a portion of the recirculated air passing through the main separating chamber 7.
  • the passageway of this air out through the outlet 14 assists in drawing out the heavier particle fraction from the end portion of the endless belt 1 1.
  • This drawn off air is made up for by drawing in outside air through a makeup inlet 34. Air drawn in through this makeup air inlet passes into the main separating chamber 7 beneath the lower end portion of wall 10 and below an adjustable deflector blade 35.
  • the makeup air passing between the adjustable deflector 35 and the upper end of endless belt 11 creates an air jet impeller which forces the particles of material outwardly across the chamber 7.
  • an air jet impeller which forces the particles of material outwardly across the chamber 7.
  • bypass system for the recirculating air passing through the chamber 7.
  • This bypass means includes an upwardly extending bypass duct 37 with an inlet at the lower end adjacent the outlet 28 from the fan casing 27.
  • the outlet for the bypass passageway 37 is shown at 38 and this outlet passes air into the cylindrical chamber 22 housing the rotating separating screen 23.
  • An adjustable damper 39 disposed within bypass duct 37 controls the amount of air flowing through this bypass duct.
  • the primary purpose of the bypass system is to provide adequate control over the velocity of the air passing upwardly through the main separating chamber 27. Accurate control over the velocity of the upwardly passing air is critical to the successful operation of the system. Obviously, this velocity will vary depending upon the material to be separated. ln separating threshed tobacco leaves from the heavier stem particles it is desirable that an air velocity of from 600 to 800 feet per minute be maintained. With lighter products a lower velocity range is used.
  • Within the ducts 25 and 26 as shown in FIG. 3 there are provided boltable gates 40 and 41 which may be moved inwardly and outwardly of the ducts to set the air velocity range. Thus, with the gates in their outermost position permitting maximum velocity through separating chamber 7. This 7 maximum velocity flow may be decreased by opening the damper 39 to permit some of the recirculated air to be bypassed.
  • the adjustable damper 39 permits approximately 30 percent control over the air velocity passing through the main separating chamber 7.
  • the bypass air also provides for uniform operation of the screen separator 23. That is to say, the rotating screening separator 23 operates at a maximum efficiency when sufficient air is passing over and through the screen. If the air velocity drops to too low a value the particles of product tend to cling to the screen thereby blocking the screen and preventing the recirculating air from passing therethrough and also preventing the particles from passing through the air lock 29. It is also possible that a brush might be employed adjacent to the outer surface of the screening separator 23 to remove the lighter particles from the outer surface of the screen so that these particles can pass to the lower end portion of the chamber 22 and then out through the air lock 29.
  • the air jet impeller created by the makeup air passing beneath deflector 35 provides a secondary separation stage which is essential in separating threshed tobacco leaves from the heavier stem particles.
  • This air jet impeller thrusts the particles across the separating chamber in much the same way as the inlet impeller 6 and prevents the formation of balls or mats of conglomerate particles.
  • the velocity of the air jet impeller may be controlled by adjusting the damper 33 and deflector 35 in the manner previously described.
  • a pneumatic separator for separating lighter particles from heavier particles comprising, a separating chamber, means for circulating air upwardly through said chamber, inlet impeller means mounted on one side of said separating chamber for thrusting particles to be separated into and across the chamber, an air jet impeller means mounted on the side of said separating chamber opposite to said inlet impeller means for thrusting the particles across the chamber in a direction opposite to the direction in which said inlet impeller means thrusts the particles, means for separating the lighter particles from the upwardly circulating air and means for collecting and carrying the heavier particles from the chamber.
  • a pneumatic separator according to claim 1 and further including means for recirculating the air from the upper end of the separating chamber to the lower end thereof and bypass means in the recirculating air means to cause a portion of the air recirculated to bypass the separating chamber.
  • a pneumatic separator according to claim 1 wherein the means for separating the lighter particles from the upwardly circulating air includes a rotating screen.
  • a pneumatic separator according to claim 1 wherein the means for separating the lighter particles from the upwardly circulating air includes a rotating screen and further including means for recirculating the air from the upper end of the separating chamber to the lower end thereof and bypass means in the recirculating air means to cause a portion of the air recirculated to bypass the separating chamber and pass to the rotating screen.
  • a pneumatic separator according to claim 1 wherein said means for carrying the heavier particles from the chamber includes an endless foraminous belt extending across the separating chamber.
  • a pneumatic separator according to claim 7 wherein said means for carrying the heavier particles from the chamber further includes an air conveyor means and a damper in said air conveyor means for diverting a portion of the air passing therethrough.
  • a pneumatic separator for separating lighter particles from heavier particles comprising, a separating chamber, means for circulating air upwardly through said chamber, inlet impeller means mounted on one side of said separating chamber for thrusting particles to be separated into and across the chamber, means for collecting and carrying the heavier particles from the chamber, means for recirculating the air from the upper end of the separating chamber to the lower end thereof, screen means for separating the lighter particles from the circulating air, a bypass means in the recirculating air means to supply additional recirculated air to said screen means to remove lighter particles from said screen means and means for adjusting the airflow through said bypass means to vary the velocity of the air circulating upwardly in the separating chamber.
  • a pneumatic separator according to claim 10 and further including an air jet impeller means mounted on the side of the separating chamber opposite to said inlet impeller means for thrusting the particles to be separated across the chamber in a direction opposite to the direction in which said inlet impeller means thrusts the particles.

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  • Combined Means For Separation Of Solids (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Air Transport Of Granular Materials (AREA)
US794000*A 1969-01-27 1969-01-27 Recirculating pneumatic separator Expired - Lifetime US3608716A (en)

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US79400069A 1969-01-27 1969-01-27

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JP (1) JPS5342903B1 (enrdf_load_stackoverflow)
DE (1) DE1951187C3 (enrdf_load_stackoverflow)
GB (1) GB1226457A (enrdf_load_stackoverflow)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655043A (en) * 1969-06-26 1972-04-11 Hauni Werke Koerber & Co Kg Pneumatic tobacco classifying apparatus
US3917567A (en) * 1974-09-30 1975-11-04 City Of San Diego Air classifier for shredded refuse
EP0078141A1 (en) * 1981-10-16 1983-05-04 Philip Morris Incorporated Method and apparatus for separating tobacco mixture into lighter and heavier fractions
FR2537849A1 (fr) * 1982-12-16 1984-06-22 Rothmans Of Pall Mall Procede et appareil pour trier du tabac a l'aide d'un courant d'air
US4465194A (en) * 1982-12-23 1984-08-14 Universal Leaf Tobacco Co. Threshed tobacco lead separator
US4646759A (en) * 1984-01-06 1987-03-03 Philip Morris Incorporated Vibrating trough tobacco separator and classifier
US4701256A (en) * 1985-12-13 1987-10-20 The Cardwell Machine Company Recirculating pneumatic separator
US4850749A (en) * 1987-12-18 1989-07-25 Philip Morris Incorporated Airlock having flaps in continuous feed of material carried by a gas stream while obstructing free flow of gas
US4915824A (en) * 1985-08-12 1990-04-10 Surtees Guy F Pneumatic classifier for tobacco and method
WO1990014020A1 (en) * 1989-05-26 1990-11-29 The Cardwell Machine Company (Uk) Limited Apparatus and method for processing inhomogeneous material such as tobacco
US5049007A (en) * 1990-03-12 1991-09-17 Philip Morris Incorporated Horizontal belt conveyor airlock
WO1993000833A1 (en) * 1991-07-10 1993-01-21 The Standard Commercial Tobacco Co., Inc. Modular classifier
US5325875A (en) * 1987-08-24 1994-07-05 Universal Leaf Tobacco Co., Inc. Apparatus for separating threshed leaf tobacco
US5344025A (en) * 1991-04-24 1994-09-06 Griffin & Company Commingled waste separation apparatus and methods
US5348161A (en) * 1991-04-15 1994-09-20 Buehler Ag Process for guiding air for cleaning semolina, as well as semolina cleaning apparatus
US5427248A (en) * 1994-10-20 1995-06-27 Mactavish Machine Manufacturing Co. Apparatus for the separation of tobacco lamina from tobacco stem
US6435191B1 (en) 1999-02-26 2002-08-20 Dimon Inc. Tobacco separator
US20020175113A1 (en) * 1998-05-22 2002-11-28 Hannu Tahkanen Method and apparatus for sorting of chips
US6510855B1 (en) * 2000-03-03 2003-01-28 Brown & Williamson Tobacco Corporation Tobacco recovery system
RU2233714C1 (ru) * 2003-02-10 2004-08-10 Вятская государственная сельскохозяйственная академия Зерноочистительная машина
RU2245746C2 (ru) * 2003-02-10 2005-02-10 Вятская государственная сельскохозяйственная академия (ВГСХА) Зерноочистительная машина
US20050115324A1 (en) * 2003-01-08 2005-06-02 Anton Stauffer Systems and apparatus for airborne ultrasonic testing of package and container seals
US20050199252A1 (en) * 2004-03-15 2005-09-15 Universal Leaf Tobacco Company, Inc. Apparatus and method for scanning and sorting tobacco leaves
US20110024334A1 (en) * 2009-07-31 2011-02-03 Mac Equipment, Inc. System and method for eliminating emissions from an air classification device
WO2011034602A1 (en) * 2009-09-18 2011-03-24 Key Technology, Inc. Apparatus and method for post-threshing inspection and sorting of tobacco lamina
US20110315606A1 (en) * 2010-06-24 2011-12-29 Cox Donald G Fluid separator for trash and other materials
CN102499444A (zh) * 2011-09-23 2012-06-20 江苏智思机械集团有限公司 从烟丝中剔除梗签的方法和设备
US9480282B2 (en) 2013-07-31 2016-11-01 Evans Mactavish Agricraft, Inc. Feed device for linear airflow separator
US9833021B2 (en) 2014-10-02 2017-12-05 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
US10207292B2 (en) * 2015-05-25 2019-02-19 Olena Kostrubiak Aerodynamic recirculating bulk material separator
CN109454001A (zh) * 2018-12-11 2019-03-12 河南威猛振动设备股份有限公司 一种振动风选装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5671106U (enrdf_load_stackoverflow) * 1979-11-06 1981-06-11

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US2294086A (en) * 1938-07-08 1942-08-25 Mcconnel Hinds Ltd Pneumatic separating apparatus
US2617530A (en) * 1947-01-27 1952-11-11 Mcgehee Company Separating assembly for dehydrating plants
US2762506A (en) * 1954-03-11 1956-09-11 Fred F Fine Nut separator
US2852137A (en) * 1956-06-05 1958-09-16 Commercial Mfg & Supply Co Raisin cleaner
US2941667A (en) * 1957-04-16 1960-06-21 Brown & Williamson Tobacco Leaf tobacco separator and method
US3164548A (en) * 1961-06-15 1965-01-05 Imp Tobacco Co Ltd Tower type pneumatic separator
US3200947A (en) * 1960-10-04 1965-08-17 Hauni Werke Koerber & Co Kg Apparatus for separating tobacco and the like material
US3378140A (en) * 1962-03-27 1968-04-16 Hauni Werke Koerber & Co Kg Method and apparatus for pneumatically separating solid particles
US3398829A (en) * 1967-02-17 1968-08-27 Du Pont Apparatus for separating adulterants during pneumatic conveying

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163734A (en) * 1937-03-17 1939-06-27 Mccleary Louis Franklin Separator deck
US2294086A (en) * 1938-07-08 1942-08-25 Mcconnel Hinds Ltd Pneumatic separating apparatus
US2617530A (en) * 1947-01-27 1952-11-11 Mcgehee Company Separating assembly for dehydrating plants
US2762506A (en) * 1954-03-11 1956-09-11 Fred F Fine Nut separator
US2852137A (en) * 1956-06-05 1958-09-16 Commercial Mfg & Supply Co Raisin cleaner
US2941667A (en) * 1957-04-16 1960-06-21 Brown & Williamson Tobacco Leaf tobacco separator and method
US3200947A (en) * 1960-10-04 1965-08-17 Hauni Werke Koerber & Co Kg Apparatus for separating tobacco and the like material
US3164548A (en) * 1961-06-15 1965-01-05 Imp Tobacco Co Ltd Tower type pneumatic separator
US3378140A (en) * 1962-03-27 1968-04-16 Hauni Werke Koerber & Co Kg Method and apparatus for pneumatically separating solid particles
US3398829A (en) * 1967-02-17 1968-08-27 Du Pont Apparatus for separating adulterants during pneumatic conveying

Cited By (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655043A (en) * 1969-06-26 1972-04-11 Hauni Werke Koerber & Co Kg Pneumatic tobacco classifying apparatus
US3917567A (en) * 1974-09-30 1975-11-04 City Of San Diego Air classifier for shredded refuse
US4475562A (en) * 1981-10-16 1984-10-09 Philip Morris Incorporated Method and apparatus for separating tobacco mixture into lighter and heavier fractions
EP0078141A1 (en) * 1981-10-16 1983-05-04 Philip Morris Incorporated Method and apparatus for separating tobacco mixture into lighter and heavier fractions
FR2537849A1 (fr) * 1982-12-16 1984-06-22 Rothmans Of Pall Mall Procede et appareil pour trier du tabac a l'aide d'un courant d'air
NL8304316A (nl) * 1982-12-16 1984-07-16 Rothmans Of Pall Mall Werkwijze en inrichting voor het wannen van tabak.
US4465194A (en) * 1982-12-23 1984-08-14 Universal Leaf Tobacco Co. Threshed tobacco lead separator
US4646759A (en) * 1984-01-06 1987-03-03 Philip Morris Incorporated Vibrating trough tobacco separator and classifier
US4915824A (en) * 1985-08-12 1990-04-10 Surtees Guy F Pneumatic classifier for tobacco and method
US4701256A (en) * 1985-12-13 1987-10-20 The Cardwell Machine Company Recirculating pneumatic separator
US5325875A (en) * 1987-08-24 1994-07-05 Universal Leaf Tobacco Co., Inc. Apparatus for separating threshed leaf tobacco
US5476109A (en) * 1987-08-24 1995-12-19 Universal Leaf Tobacco Co., Inc. Apparatus for separating threshed leaf tobacco
US5460189A (en) * 1987-08-24 1995-10-24 Universal Leaf Tobacco Co., Inc. Apparatus for separating threshold leaf tobacco
US4850749A (en) * 1987-12-18 1989-07-25 Philip Morris Incorporated Airlock having flaps in continuous feed of material carried by a gas stream while obstructing free flow of gas
WO1990014020A1 (en) * 1989-05-26 1990-11-29 The Cardwell Machine Company (Uk) Limited Apparatus and method for processing inhomogeneous material such as tobacco
US5049007A (en) * 1990-03-12 1991-09-17 Philip Morris Incorporated Horizontal belt conveyor airlock
US5348161A (en) * 1991-04-15 1994-09-20 Buehler Ag Process for guiding air for cleaning semolina, as well as semolina cleaning apparatus
US5344025A (en) * 1991-04-24 1994-09-06 Griffin & Company Commingled waste separation apparatus and methods
US5358122A (en) * 1991-07-10 1994-10-25 The Standard Commercial Tobacco Company, Inc. Multiple stage tobacco classifier
US5205415A (en) * 1991-07-10 1993-04-27 The Standard Commercial Tobacco Co., Inc. Modular classifier
WO1993000833A1 (en) * 1991-07-10 1993-01-21 The Standard Commercial Tobacco Co., Inc. Modular classifier
US5427248A (en) * 1994-10-20 1995-06-27 Mactavish Machine Manufacturing Co. Apparatus for the separation of tobacco lamina from tobacco stem
EP0707800A3 (en) * 1994-10-20 1996-10-30 Mactavish Machine & Manufactur Device for separating tobacco leaf and tobacco ribs
US20020175113A1 (en) * 1998-05-22 2002-11-28 Hannu Tahkanen Method and apparatus for sorting of chips
US6435191B1 (en) 1999-02-26 2002-08-20 Dimon Inc. Tobacco separator
US6510855B1 (en) * 2000-03-03 2003-01-28 Brown & Williamson Tobacco Corporation Tobacco recovery system
US20050115324A1 (en) * 2003-01-08 2005-06-02 Anton Stauffer Systems and apparatus for airborne ultrasonic testing of package and container seals
RU2233714C1 (ru) * 2003-02-10 2004-08-10 Вятская государственная сельскохозяйственная академия Зерноочистительная машина
RU2245746C2 (ru) * 2003-02-10 2005-02-10 Вятская государственная сельскохозяйственная академия (ВГСХА) Зерноочистительная машина
US20050199252A1 (en) * 2004-03-15 2005-09-15 Universal Leaf Tobacco Company, Inc. Apparatus and method for scanning and sorting tobacco leaves
US7383840B2 (en) 2004-03-15 2008-06-10 Universal Leaf Tobacco Company, Inc. Apparatus for scanning and sorting tobacco leaves
US20110024334A1 (en) * 2009-07-31 2011-02-03 Mac Equipment, Inc. System and method for eliminating emissions from an air classification device
US8016117B2 (en) * 2009-07-31 2011-09-13 Mac Process Inc. System and method for eliminating emissions from an air classification device
WO2011034602A1 (en) * 2009-09-18 2011-03-24 Key Technology, Inc. Apparatus and method for post-threshing inspection and sorting of tobacco lamina
US20110067714A1 (en) * 2009-09-18 2011-03-24 Harry Drewes Apparatus and method for post-threshing inspection and sorting of tobacco lamina
US8281931B2 (en) 2009-09-18 2012-10-09 Key Technology, Inc. Apparatus and method for post-threshing inspection and sorting of tobacco lamina
US8267254B2 (en) * 2010-06-24 2012-09-18 Air Equipment & Engineering, Inc. Fluid separator for trash and other materials
US20110315606A1 (en) * 2010-06-24 2011-12-29 Cox Donald G Fluid separator for trash and other materials
CN102499444A (zh) * 2011-09-23 2012-06-20 江苏智思机械集团有限公司 从烟丝中剔除梗签的方法和设备
CN102499444B (zh) * 2011-09-23 2013-12-11 江苏智思机械集团有限公司 从烟丝中剔除梗签的方法和设备
US9480282B2 (en) 2013-07-31 2016-11-01 Evans Mactavish Agricraft, Inc. Feed device for linear airflow separator
USD805687S1 (en) 2014-10-02 2017-12-19 Digirettes, Inc. Vaping device tank
USD805686S1 (en) 2014-10-02 2017-12-19 Digirettes, Inc. Vaping device
US9833021B2 (en) 2014-10-02 2017-12-05 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
US10278428B2 (en) 2014-10-02 2019-05-07 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
US10299513B2 (en) 2014-10-02 2019-05-28 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
USD857985S1 (en) 2014-10-02 2019-08-27 Digirettes, Inc. Vaping device
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Also Published As

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JPS5342903B1 (enrdf_load_stackoverflow) 1978-11-15
DE1951187B2 (de) 1980-05-29
DE1951187A1 (de) 1970-08-06
GB1226457A (enrdf_load_stackoverflow) 1971-03-31
DE1951187C3 (de) 1981-02-05

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