US3377782A - Cyclone and cleaner - Google Patents

Cyclone and cleaner Download PDF

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Publication number
US3377782A
US3377782A US561496A US56149666A US3377782A US 3377782 A US3377782 A US 3377782A US 561496 A US561496 A US 561496A US 56149666 A US56149666 A US 56149666A US 3377782 A US3377782 A US 3377782A
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US
United States
Prior art keywords
dust
openings
outlet
clean
outlets
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
US561496A
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English (en)
Inventor
Wilhelmsson Gunnar
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.)
Svenska Flaktfabriken AB
Original Assignee
Svenska Flaktfabriken AB
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 Svenska Flaktfabriken AB filed Critical Svenska Flaktfabriken AB
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Publication of US3377782A publication Critical patent/US3377782A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/22—Apparatus in which the axial direction of the vortex is reversed with cleaning means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C11/00—Accessories, e.g. safety or control devices, not otherwise provided for, e.g. regulators, valves in inlet or overflow ducting

Definitions

  • a cleaning device for simultaneously cleaning the dust outlets and the clean-gas outlet in small centrifugal dust separators which are provided with a central clean-gas outlet tube and a plane end wall having two or more openings located close to the periphery of the separator casing and functioning as outlets for separated dust.
  • the cleaning device consists of an element having one end outside the separator, passing through the outlet tube for clean gas andterminating in branch elements supporting scraping means for clearing dust from the edges of the dust outlet openings.
  • This cleaning device consists of a movably-mounted element which extends through both the clean-gas outlet and the dust outlet, the end of said element which is located outside the clean-gas outlet being movably supported by an operator constructed to give an axially-reciprocating action to said element.
  • a conventional cleaning device for simultaneously cleaning the dust outlets and the cleangas outlets in cyclones described in the above-mentioned British patent gives rise to difiiculties, because cleaning devices for the dust outlet openings which are located in the periphery of the cylindrical portion, tend to interfere with efficient dust separation.
  • the present invention relates to an improved cleaning device for small cyclones having two tangential inlets for raw gas and a centrally located outlet tube for discharging clean gas.
  • the present invention provides a suitable cleaning device for cyclones of the above-mentioned kind, which does not substantially interfere with efiicient dust separation, yet which removes accumulated dust from the outlets to prevent clogging.
  • the present invention is characterized in that a cleaning device projects through the dust outlets with branches corresponding in number to the outlet openings, each of which branches being arranged to support a scraping means inserted in and conforming to its respective outlet opening, which scrapping means, upon reciprocation of the cleaning element, will remove dust deposited on the edges of the outlet openings, the element also being provided with annular scrapping means bearing against the inside of the clean-gas outlet.
  • FIG. 1 is a longitudinal vertical section of a cyclone with a cleaning device according to the invention shown in elevation;
  • FIG. 2 is a longitudinal horizontal section of the cyclone of FIG. 1;
  • FIG. 3 is a transverse section taken along the section 33 of FIG. 1, with the inlet portion of the cyclone shown in phantom lines.
  • the cyclone separator comprises a generally cylindrical casing 3 having a pair of tangential inlets 1 for raw dust-laden gases.
  • the inlets 1 introduce the gas with a tangential helical motion into the generally cylindrical shell 3 so that the dust particles are separated from the rotating flow of gas by centrifugal force.
  • the clean gas is discharged from the casing shell 3 by means of a central tube 2 which projects into the shell beyond the tangential inlet.
  • the shell 3 terminates in a plane end wall 4 which is; provided with two openings 5 adjacent to the shell 3 at its junction with the end wall.
  • the incoming dust-laden gas causes a flow toward the end wall 4 which discharges the separated dust through the openings 5 into a channel 12 through which the dust is directed to a suitable collecting means.
  • a cleaning device 6 is provided for the openings 5 and the central tube 4 to maintain the edges free of dust without impairing the efiiciency of the dust-separating means.
  • an operator 7 to which the end of the cleaning element 6 projecting outside the clean-gas outlet is movably connected, so that when the operator is rocked on its pivot as indicated by the arrow in FIG. 1, the element 6 is reciprocated axially within the tube 2.
  • the element extends both through the cleangas outlet tube 2 and the dust outlets 5.
  • the element Adjacent the plane end wall 4, the element terminates in two branches 8, which in turn, support scraping means 9 conforming to the outlets 5, and which upon reciprocation of the element, are inserted in the openings 5, for scraping away dust deposited on the edges of the outlets.
  • the extensions of the branches 8 bear resiliently against the innermost edges 11 of said openings, and are suitably provided with a width corresponding to the width of the outlet openings.
  • a scraping means 10 bears against the inside of the outlet tube 2. and consists of a spirally-wound coil.
  • a cyclonic separator comprising a casing including a shell with a generally cylindrical portion at its inlet end and having two tangential inlets for raw gas, a tube projecting beyond said tangential inlets centrally within said inlet portion to constitute a clean-gas outlet, said casing shell terminating at the opposite end in a plane bottom wall spaced from said outlet tube, and a plurality of dust openings in said bottom wall positioned adjacent the shell at its junction with said bottom wall to serve as outlets for the separated dust; the improvement wherein said separator includes a cleaning device consisting of an element having one end outside of said casing, a medial portion extending through the clean-gas outlet tube, and terminating in a plurality of branches, each projecting through one of said dust outlet openings, said element being supported for movement axially within said tube and said outlets, an operator connected to said element to give an axial reciprocating action to said element, a scraping means on each branch inserted in and conforming to its respective oulet opening, which scraping means upon reciprocation of the separat
  • a cleaning device wherein the parts of the branches projecting through the dust outlets, bear as guiding means against the innermost edges of the dust-outlet openings upon reciprocation of the element.
  • a cleaning device according to claim 1, wherein the annular scraping means bearing against the inside of the clean-gas outlet tube is spirally-wound coil.

Landscapes

  • Cyclones (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Secondary Cells (AREA)
  • Cleaning In General (AREA)
US561496A 1965-06-29 1966-06-29 Cyclone and cleaner Expired - Lifetime US3377782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8610/65A SE305112B (xx) 1965-06-29 1965-06-29

Publications (1)

Publication Number Publication Date
US3377782A true US3377782A (en) 1968-04-16

Family

ID=20274561

Family Applications (1)

Application Number Title Priority Date Filing Date
US561496A Expired - Lifetime US3377782A (en) 1965-06-29 1966-06-29 Cyclone and cleaner

Country Status (7)

Country Link
US (1) US3377782A (xx)
BE (1) BE683259A (xx)
ES (1) ES328509A1 (xx)
FR (1) FR1488465A (xx)
GB (1) GB1084474A (xx)
NL (1) NL6608911A (xx)
SE (1) SE305112B (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008010816U1 (de) * 2008-08-05 2008-10-16 Burgmann Industries Gmbh & Co. Kg Zyklonabscheider mit Abstreifvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2219996A (en) * 1935-08-26 1940-10-29 Monsanto Chemicals Method and apparatus for recovering phthalic anhthydride
US2494465A (en) * 1945-05-23 1950-01-10 Aerotec Corp Apparatus for classifying particles
GB739504A (en) * 1953-11-30 1955-11-02 Howden James & Co Ltd Improvements in or relating to dust collectors
US2848066A (en) * 1955-09-28 1958-08-19 Svenska Flaektfabriken Ab Device for a simultaneous cleansing of the outlets for dust and clean-gas in cyclones
GB866552A (en) * 1958-08-28 1961-04-26 Green & Son Ltd Improvements in or relating to dust extractors
US3296778A (en) * 1964-03-31 1967-01-10 Svenska Flaektfabriken Ab Cleaning device for dust separating apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2219996A (en) * 1935-08-26 1940-10-29 Monsanto Chemicals Method and apparatus for recovering phthalic anhthydride
US2494465A (en) * 1945-05-23 1950-01-10 Aerotec Corp Apparatus for classifying particles
GB739504A (en) * 1953-11-30 1955-11-02 Howden James & Co Ltd Improvements in or relating to dust collectors
US2848066A (en) * 1955-09-28 1958-08-19 Svenska Flaektfabriken Ab Device for a simultaneous cleansing of the outlets for dust and clean-gas in cyclones
GB866552A (en) * 1958-08-28 1961-04-26 Green & Son Ltd Improvements in or relating to dust extractors
US3296778A (en) * 1964-03-31 1967-01-10 Svenska Flaektfabriken Ab Cleaning device for dust separating apparatus

Also Published As

Publication number Publication date
BE683259A (xx) 1966-12-01
FR1488465A (fr) 1967-07-13
ES328509A1 (es) 1967-04-01
SE305112B (xx) 1968-10-14
NL6608911A (xx) 1966-12-30
GB1084474A (en) 1967-09-20

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