US3293832A - Apparatus for removing dust and other impurities from air and other gases - Google Patents

Apparatus for removing dust and other impurities from air and other gases Download PDF

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Publication number
US3293832A
US3293832A US413482A US41348264A US3293832A US 3293832 A US3293832 A US 3293832A US 413482 A US413482 A US 413482A US 41348264 A US41348264 A US 41348264A US 3293832 A US3293832 A US 3293832A
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United States
Prior art keywords
rotation
blades
axis
separating member
gases
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Expired - Lifetime
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US413482A
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English (en)
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Loftheim Tor Bjorn
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Individual
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Individual
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Publication of US3293832A publication Critical patent/US3293832A/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
    • B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps

Definitions

  • centripetal mechanical separation for the first time was used as a means of separating solids, particularly micro-particles, from air or gases, instead of, as usual, separating by centrifugal force.
  • microparticles during the above named conditions will follow the lifting streams of the air or gases radially inwards, but as soon as they, by means of the forwardly curved blades, are aggregated into greater particles, these will by reflection against the surface limiting the separate outlets and/ or by the action of the centrifugal forces, partly be lost through the outlet for cleaned gas and in this manner the effect of the separation is decreased.
  • the object of the present invention is to reduce in a considerable degree the above mentioned drawback, and according to the invention the spaces between the blades at the inner edges thereof each are provided with extensions limited by surfaces extending opposite to the direction of rotation of the blades and tangentially with respect to a cone whose axis coincides with the axis of rotation.
  • the extensions may be formed by plate portions which, from the inner edges of the respective separating blades, each extend rearwardly beyond the inner edge of the subsequent blade and, conveniently along its rear edge, is provided with an outwardly bent rim portion resting against the underside of the plate portion extending from said subsequent blade, approximately at the middle thereof, whereby a trough-shaped extension is formed between adjacent plate portions having its middle plan tangential to a cone whose axis coincides with the axis of rotation of the separating member.
  • the plate portions constituting the extensions extend rearwardly of the rear end of the blades so that they project into the secondary housing.
  • FIG. 1 shows a side view of the apparatus with the upper half in vertical section
  • FIG. 2 a cross-section along the line II-II in FIG. 1
  • FIG. 3 a transverse section, in a somewhat greater scale, of blades with intermediate extensions or troughs
  • FIG. 4 a side view of a blade and plate portion.
  • FIG. 1 denotes a separating member comprising a rotatably supported shaft 2, around which, cycloneshaped, is distributed a number of separation blades 3 with intermediate spaces 4 which form passages having primary outlets 5 for air or gases which have been substantially cleaned of the dust, etc.
  • the blades 3 are inclined outwardly from the axis of rotation from the inlet end towards the outlet end and the angle of pitch of the blades decreases with increasing distance from the axis of rotation.
  • each of the blades 3 along its inner edge 3' is provided with a plate portion 7 extending tangentially with respect to a cone whose axis coincides with the axis of rotation, this plate portion 7 ex tending opposite to the direction of rotation of the blade.
  • Plate portion 7 projects rearwardly beyond the inner edge 3' of the subsequent plate.
  • Each of the plate portions 7 along its free edge may have an outwardly bent edge portion 8 which rests against the under side of the projecting plate portion 7 of said subsequent blade, approximately along the middle thereof, so that said edge portion 8 inwardly closes the extension 6.
  • the extensions 6 thus have the form of a trough.
  • the plate portion 7 is extended beyond the rear edge of the blade 3, as indicated at 7.
  • the extensions 7' project to form outlets 9 extending into secondary housing 13.
  • the primarily iconically shaped separating member 1 is rotatably supported in a housing 10 to which the dustbearing gas is supplied through the gas inlet 11, axially at the smallest end of the conical separating member 1.
  • the separating member is rotating separation is effected by the rotating whirl-forming blades 3 which form the passages 4 and the outlets 5 through which the substantial quantity of cleaned gases passes into the housing 10 and out through the outlet 12 thereof, while :a smaller part of the gases together with the substantial part of the separated dust etc. are received in the trough-shaped extensions 6 and are conveyed along the same and out through the outlets 9 into a secondary chamber 13 having an outlet (not shown) to a dust collector or secondary cyclone.
  • Apparatus for separation of dust and other impurities from air and other gases comprising a stationary housing, a rotary separating member situated in said housing and having a predetermined axis of rotation, said separating member having a substantially conical configuration and having an inner end adjacent to said axis of rotation and an outer end situated at a greater distance from said axis of rotation than said inner end, and said separating member including a plurality of outer separating blades distributed about said axis of rotation and each having a pair of opposed longitudinally extending side edges forming an outer side edge and an inner side edge for each blade, said outer and inner side edges of said blades extending from said inner to said outer ends of said separating member, said blades defining between themselves primary passages and primary outlets through which a substantial quantity of substantially clean gases are emitted, said blades respectively having inner plate portions extending from their inner side edges in a direction opposite to the direction of rotation of said separating member and substantially tangentially with respect to a cone whose axis coincides with said axis

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cyclones (AREA)
  • Separating Particles In Gases By Inertia (AREA)
US413482A 1963-11-28 1964-11-24 Apparatus for removing dust and other impurities from air and other gases Expired - Lifetime US3293832A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO15103263 1963-11-28

Publications (1)

Publication Number Publication Date
US3293832A true US3293832A (en) 1966-12-27

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ID=19908885

Family Applications (1)

Application Number Title Priority Date Filing Date
US413482A Expired - Lifetime US3293832A (en) 1963-11-28 1964-11-24 Apparatus for removing dust and other impurities from air and other gases

Country Status (6)

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US (1) US3293832A (da)
AT (1) AT250918B (da)
BE (1) BE656319A (da)
CH (1) CH450127A (da)
DE (1) DE1407963C3 (da)
DK (1) DK122306B (da)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5261380A (en) * 1992-07-15 1993-11-16 Ford Motor Company Crankcase ventilation system for automotive engine
US5542402A (en) * 1995-04-05 1996-08-06 Ford Motor Company Positive crankcase ventilation system with a centrifugal oil separator
US5617834A (en) * 1996-03-05 1997-04-08 Ford Motor Company Air-oil separator for a crankcase ventilation system in an internal combustion engine
WO2005049176A1 (fr) * 2003-11-12 2005-06-02 Mecaplast S.A.M. Dispositif separateur d’huile
US20170363111A1 (en) * 2016-06-16 2017-12-21 Design West Technologies, Inc. Portable, Low-Power Air Filtration System
CN113700682A (zh) * 2021-10-13 2021-11-26 南通盛强机械制造有限公司 一种具有消音减振结构的空气压缩机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH619622A5 (da) * 1978-01-20 1980-10-15 Pierre De Castella
CN108465300B (zh) * 2018-04-02 2020-08-25 华融化学股份有限公司 一种化工用气液分离塔

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1941449A (en) * 1930-10-02 1934-01-02 American Air Filter Co Separator
US2209607A (en) * 1938-08-01 1940-07-30 American Air Filter Co Blade tip for rotary dust separators
US2317785A (en) * 1937-05-29 1943-04-27 Loftheim Tor Bjorn Separator
US2780309A (en) * 1948-12-10 1957-02-05 Loftheim Tor Bjorn Devices for removing dust and other impurities from air, funnel smoke and other gases, especially gases from chemical and electrochemical manufactories

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1941449A (en) * 1930-10-02 1934-01-02 American Air Filter Co Separator
US2317785A (en) * 1937-05-29 1943-04-27 Loftheim Tor Bjorn Separator
US2209607A (en) * 1938-08-01 1940-07-30 American Air Filter Co Blade tip for rotary dust separators
US2780309A (en) * 1948-12-10 1957-02-05 Loftheim Tor Bjorn Devices for removing dust and other impurities from air, funnel smoke and other gases, especially gases from chemical and electrochemical manufactories

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5261380A (en) * 1992-07-15 1993-11-16 Ford Motor Company Crankcase ventilation system for automotive engine
US5542402A (en) * 1995-04-05 1996-08-06 Ford Motor Company Positive crankcase ventilation system with a centrifugal oil separator
US5617834A (en) * 1996-03-05 1997-04-08 Ford Motor Company Air-oil separator for a crankcase ventilation system in an internal combustion engine
WO2005049176A1 (fr) * 2003-11-12 2005-06-02 Mecaplast S.A.M. Dispositif separateur d’huile
US20170363111A1 (en) * 2016-06-16 2017-12-21 Design West Technologies, Inc. Portable, Low-Power Air Filtration System
US10774846B2 (en) * 2016-06-16 2020-09-15 Design West Technologies, Inc. Portable, low-power air filtration system
CN113700682A (zh) * 2021-10-13 2021-11-26 南通盛强机械制造有限公司 一种具有消音减振结构的空气压缩机
CN113700682B (zh) * 2021-10-13 2022-02-08 南通盛强机械制造有限公司 一种具有消音减振结构的空气压缩机

Also Published As

Publication number Publication date
AT250918B (de) 1966-12-12
DE1407963A1 (de) 1969-10-02
DE1407963B2 (de) 1974-04-04
DK122306B (da) 1972-02-21
BE656319A (da) 1965-03-16
DE1407963C3 (de) 1974-10-31
CH450127A (de) 1968-01-15

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