US3727383A - Air and fiber separator - Google Patents

Air and fiber separator Download PDF

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Publication number
US3727383A
US3727383A US00085564A US3727383DA US3727383A US 3727383 A US3727383 A US 3727383A US 00085564 A US00085564 A US 00085564A US 3727383D A US3727383D A US 3727383DA US 3727383 A US3727383 A US 3727383A
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US
United States
Prior art keywords
drum
wall
housing
inlet
carrier air
Prior art date
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
Application number
US00085564A
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English (en)
Inventor
J Neitzel
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.)
Nortel Networks Ltd
Original Assignee
Northern Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Northern Electric Co Ltd filed Critical Northern Electric Co Ltd
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Publication of US3727383A publication Critical patent/US3727383A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes

Definitions

  • Feldcamp ABS'I RACT A separator for textile fibers and a pneumatic stream of carrier air therefor comprising a housing having an inlet for directing the stream of carrier air substantially tangentially of and at substantially the same speed as a cylindrical drum surface rotatively mounted in the housing.
  • the cylindrical drum wall closely approaches opposed housing walls for restricting the tendency of the carrier air to pass around the drum.
  • the cylindrical wall of the drum has relatively fine perforations, but the total area of perforations in any portion of the cylinder wall which spans the casing interior between the inlet and the first of said opposed housing walls substantially greater than the cross sectional area of the inlet.
  • an object of the present invention is to provide novel separator equipment which will effectively remove from a carrier air stream fly lint as dispersed and minute as that which is now returned to the card room after conventional filtering procedures.
  • Another object is to provide an air separator of the above type in which the pressure conditions are such that practically none of the fibers in the pneumatic stream actually touch the surface of the filter screen through which the carrier air then passes, freed from its fiber burden.
  • the novel separator device includes a housing, generally designated 6, having opposed frontand rear walls 7 and 8 and top wall 9 beneath which is provided a tangential inlet passage 10 for the fiber and carrier air stream. At the bottom of the casing there is provided-an outlet opening 11 for the extracted lint or fibers within which is rotatively mounted the suction holding or vacuum wheel 12 having a central shaft 13 rotatively mounted in the housing sidewalls l4 and IS.
  • a separator or condensor drum, generally designated 18, is also rotatively mounted in the housing on its axial shaft 19,
  • the drum includes a foraminous cylindrical wall 22 having bearing spiders 23 and 25 at its ends with central bosses, as 25, rigidly secured to driving shaft 19. Shafts 19 and 13 ex tend beyond the housing sidewalls, as at 26 and 27 for attachment of synchronized powering means (not shown).
  • drum 18 was rotated at approximately 170RPM while vacuum wheel 12 was rotated at approximately 200 RPM.
  • Cylindrical wall 22 is braced by longitudinal beams or bars 28 conveniently arranged in quadrature, as shown.
  • Drum wall 22 also approaches very close to rear scroll wall 29.
  • the drum diameter was .20 inches
  • the restricted region 30 between the drum and front wall 7 was approximately ll'inches in width (radially of the drum)
  • the minimum width of the region 31 at the 4 oclock position between drum wall 22 and scroll wall 29 was approximately threeeighths inches in width or thickness.
  • Scroll plate 29 Secured to the exterior surface of the drum and extending longitudinally the full length thereof and located at intervals therearound, in this instance at a 180 interval, are small angle bars 34 for a purpose to be described.
  • Scroll plate 29 joins at 36 a flat plate which cooperates with housing top wall 9 to define rectangular inlet 10, the sidewalls of this inlet being shown at 37 and 38.
  • Exhaust ducting 40, 41 projects transversely and rearwardly from the sidewall 8 of the housing.
  • a pair of dampers 42 are mountedin transverse exhaust ducting 40, which extends entirely across the housing as best shown in FIG. 3, on vertical shafts 43. These shafts extend below ducting 40, as at 44 and are'there secured to levers 45 and 46 connected by a link 47.
  • Lever 45 is connected by a link 48 to an operating pneumatic cylinder 49.
  • the pneumatic cylinder is
  • Transverse exhaust duct 40 connects at its ends through chambers 51 and 52 with the hollow interior of drum 18.
  • the ends of the drum include running seals at 52 and 53 with the casing wall so that exhaust duct 40 communicates with inlet 10 and throat 54 only through perforations 55 in the drum wall.
  • inlet 10 was 6 inches in height and 36 inches in length, thus, having a total cross sectional area of 216 square inches.
  • inlet passage 10 is disposed so as to direct the entering stream of fibers and pneumatic carrier air through throat 54 substantially tangentially of cylindrical drum surface 22.
  • the rotatingdrum 18 was 20 inches in diameter and the perforations 55 therein were seven sixty-fourths inch in diameter and located on staggered centers spaced five thirty-seconds 7 inch apart. This arrangement of perforations resulted in the total area of openings eQualing approximately 45 percent of the peripheral area of the drum.
  • the restricted region 30 which, of course, is of substantially less cross sectional area, radially of the drum, than the cross sectional area of inlet 10.
  • the region 31 at the 4 oclock position of the drum is even more highly restricted than the region 30, being, in the mentioned embodiment three-eighths inch in width or thickness.
  • the region 31 increases in width in the counter-clockwise direction around the drum, to a thickness of approximately seven-eighths inch at the point 36.
  • drum 18 is rotated at such speed that its periphery moves in the same direction and at a speed closely approaching the velocity of pneumatically transported fibers in the throat portion 54 of the casing.
  • the air velocity ranged from 1,000 to 1,300 feet per minute, while the peripheral speed of drum 18 was 900 feet per minute which, F course, closely approximated the velocity of the entering fibers in throat 54 which lag behind the carrier air.
  • 'Drum 18 was powered to rotate counter-clockwise so that its surface portion, within throat 54, moved in the same direction, as well as substantially at the speed of the entering fibers.
  • Vacuum wheel 12 preferably is caused to rotate slightly more rapidly than drum 18 for keeping the bottom of the housing clear of accumulated fiber.
  • the above mentioned exemplary dimensions and velocities in themselves are not essential, but merely represent exemplary proportions.
  • the total open space in the drum wall exposed to entering carrier air need merely be substantially greater than the minimum cross sectional area of the inlet, while restricted regions 30 and 31 between the front and rear walls 7 and 29 and the drum portions immediately abreast thereof should be substantially less than the throat cross sectional area, as well as the total area of separation of the fiber and carrier air substantially without any contact between the fibers and the surface of the separator drum so that relatively small perforations can be provided in the drum surface and no wip ing action is necessary.
  • This apparatus installed in the return line to a card room air conditioning system in a textile mill has resulted in a substantially lint free atmosphere in this room for the first time.
  • a separator for particulate matter and pneumatic carrier air therefor comprising a housing having a curved first wall and a second, opposed wall, a hollow drum rotatively mounted in said housing between said walls and having a uniformly perforated circumferential wall, a tangential inlet in said housing disposed to direct an incoming stream of particulate matter and air between said first wall and said drum and substantially tangentially along a portion of said drum wall equal to approximately thereof, there being a restriction between said drum wall and said first wall at substantially the end of immediately beyond said 120 portion of said drum wall, a particulate matter discharge opening in said housing opposite said inlet, suction means connected with the interior of said drum, and means for causing rotation of said drum in the direction to cause movement of said portion of said drum wall in the direction of the entering air and particulate matter, the perforations in said drum wall being proportioned so that the total area of perforations in said HO-degree portion thereof is substantially greater than the cross-sectional area of said inlet whereby the velocity of entering
  • suction means includes conduits connected to opposite ends of said drum.
  • a separator as described in claim 1 in which a restricted cross-sectional area is also provided between said drum and said opposed wall.
  • a separator as described in claim 6 further including a radial projection on said drum for displacing particulate material which may become lodged in the portions of the housing interior between said drum and said opposed wall.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US00085564A 1970-10-30 1970-10-30 Air and fiber separator Expired - Lifetime US3727383A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8556470A 1970-10-30 1970-10-30

Publications (1)

Publication Number Publication Date
US3727383A true US3727383A (en) 1973-04-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00085564A Expired - Lifetime US3727383A (en) 1970-10-30 1970-10-30 Air and fiber separator

Country Status (5)

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US (1) US3727383A (it)
AU (1) AU460059B2 (it)
CH (1) CH535064A (it)
DE (1) DE2152673A1 (it)
IT (1) IT938623B (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4654059A (en) * 1984-10-31 1987-03-31 Rotoclean Industrial Corporation Multistage rotary dust collector
US5573563A (en) * 1995-06-07 1996-11-12 Product Engineered Systems, Inc. Micro-rotary screener
US11278935B2 (en) * 2018-12-13 2022-03-22 Netzsch-Feinmahltechnik Gmbh Centrifugal separator comprising special separator wheel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE438246C (de) * 1924-12-03 1926-12-11 Maschf Augsburg Nuernberg Ag Fliehkraftstaubabscheider
US1720702A (en) * 1928-05-04 1929-07-16 Streun John Arnold Cotton separator
US2643734A (en) * 1951-01-04 1953-06-30 Imp Tobacco Co Ltd Tangential pneumatic separator
US3486313A (en) * 1967-12-20 1969-12-30 T & P Mechanical Co Inc Condenser air lint filter
FR2010133A1 (it) * 1968-06-04 1970-02-13 Parks Cramer
US3525198A (en) * 1968-05-31 1970-08-25 Murray Co Inc Fly lint recovery apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE438246C (de) * 1924-12-03 1926-12-11 Maschf Augsburg Nuernberg Ag Fliehkraftstaubabscheider
US1720702A (en) * 1928-05-04 1929-07-16 Streun John Arnold Cotton separator
US2643734A (en) * 1951-01-04 1953-06-30 Imp Tobacco Co Ltd Tangential pneumatic separator
US3486313A (en) * 1967-12-20 1969-12-30 T & P Mechanical Co Inc Condenser air lint filter
US3525198A (en) * 1968-05-31 1970-08-25 Murray Co Inc Fly lint recovery apparatus
FR2010133A1 (it) * 1968-06-04 1970-02-13 Parks Cramer
US3628313A (en) * 1968-06-04 1971-12-21 Parks Cramer Apparatus for separating textile fibers from conveying air

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4654059A (en) * 1984-10-31 1987-03-31 Rotoclean Industrial Corporation Multistage rotary dust collector
US5573563A (en) * 1995-06-07 1996-11-12 Product Engineered Systems, Inc. Micro-rotary screener
US11278935B2 (en) * 2018-12-13 2022-03-22 Netzsch-Feinmahltechnik Gmbh Centrifugal separator comprising special separator wheel
US11607709B2 (en) 2018-12-13 2023-03-21 Netzsch-Feinmahltechnik Gmbh Centrifugal separator comprising special separator wheel

Also Published As

Publication number Publication date
AU3471271A (en) 1973-05-03
DE2152673A1 (de) 1972-05-04
IT938623B (it) 1973-02-10
CH535064A (de) 1973-03-31
AU460059B2 (en) 1975-04-17

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