EP0231931B1 - A cyclone with forced gas stream whirling - Google Patents

A cyclone with forced gas stream whirling Download PDF

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Publication number
EP0231931B1
EP0231931B1 EP19870101417 EP87101417A EP0231931B1 EP 0231931 B1 EP0231931 B1 EP 0231931B1 EP 19870101417 EP19870101417 EP 19870101417 EP 87101417 A EP87101417 A EP 87101417A EP 0231931 B1 EP0231931 B1 EP 0231931B1
Authority
EP
European Patent Office
Prior art keywords
whirling
cyclone
gas stream
chamber
middle pipe
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
Application number
EP19870101417
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0231931A3 (en
EP0231931A2 (en
Inventor
Jan Grzywnowicz
Jan Prof. Dr. Harpula
Zbigniew Maniowski
Zbigniew Prof. Dr. Gorny
Jozef Dr. Tokarski
Andrzej Dr. Heryan
Stanislaw Burda
Bartlomiej Grzywnowicz
Andrzej Harpula
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.)
Instytut Odlewnictwa
Original Assignee
Instytut Odlewnictwa
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 Instytut Odlewnictwa filed Critical Instytut Odlewnictwa
Publication of EP0231931A2 publication Critical patent/EP0231931A2/en
Publication of EP0231931A3 publication Critical patent/EP0231931A3/en
Application granted granted Critical
Publication of EP0231931B1 publication Critical patent/EP0231931B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
    • 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
    • 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
    • B04C5/08—Vortex chamber constructions
    • B04C5/103—Bodies or members, e.g. bulkheads, guides, in the vortex chamber

Definitions

  • the invention relates to a cyclone with gas stream whirling, comprising an inlet chamber provided with inlet and outlet stub pipes and connected to a whirling chamber having an upper cylindrical part and a lower conical part and terminating in a drain stub pipe, a middle pipe mounted inside the cyclone, the lower part of said middle pipe being built up from a number of cylinders of increasingly smaller diameter and partially superimposed concentrically on one another, and gaps provided between successive cylinders, whereby vanes (11) are mounted in the gaps in parallel to the axis of the middle pipe.
  • Cyclones of the type described are used for separating solid particles and liquid droplets from gases.
  • a known cyclone of the type mentioned above (FR-A-437 971) operates on a free whirling principle.
  • the dusted gas upon entering the inlet chamber meets a side partition which transforms the rectilinear movement into a circular movement.
  • the friction between the dusted gas and this partition causes a decrease in the velocity of the gas so that the whirling motion more or less disappears, because there are no means for maintaining a whirling action along the whirling chamber.
  • a cyclone with forced gas stream whirling comprising a whirling chamber in which a middle pipe is mounted.
  • the middle pipe is surrounded by a helical rib.
  • the channel formed thereby is radially outwardly open so that a radial space is formed between said channel and the inner wall of the whirling chamber. Therefore, a proportion of the entering gas departs from the whirl in the channel around the middle pipe and enters the space between vanes provided in the area between said channel and the inner wall of the whirling chamber.
  • this proportion of the gas cannot whirl anymore so that the dust being suspended therein is not subjected to centrifugal forces.
  • This non-whirled portion of the gas returns to the lower end of the middle pipe carrying a greater part of dust therefrom into a stack.
  • the present invention has being defined in order to overcome the problems of the known cyclones.
  • a cyclone of the type mentioned initially is characterized in that a helical rib defining the cross-section of the gas stream is provided in the cylindrical part of the whirling chamber, and oblique vanes are secured to the cylinders, playing the same role along the increasingly smaller diameter of the conical part of the whirling chamber.
  • a cyclone is provided in which the whirling chamber is shaped on the inside in such a manner that lateral propagation of the gas stream under the effect of a difference between the inlet pressure and the outlet pressure is prevented. Moreover, the whirling action is maintained along the entire length of the whirling chamber.
  • the cyclone with forced gas stream whirling is built up from an inlet chamber 1 provided with a gas inlet stub pipe 7.
  • the side walls of the inlet chamber 1 have a spiral shape, thereby decreasing gradually the cross section of the gas stream.
  • the inlet chamber 1 is connected to a whirling chamber, the upper part thereof having a cylindrical shape and the lower part a conical shape.
  • a middle pipe 4 is installed which terminates at the top in an outlet gas stub pipe 8 mounted on the inlet chamber 1.
  • the cylindrical part of the whirling chamber is filled inside with a helical rib 5 which restricts the section of the gas stream.
  • the pitch of the helical rib 5 is selected such that the flowing gas should have a velocity equal to that in the inlet stub pipe 7 at every point. Between the edge of the helical rib 5 and the shell of the whirling chamberthere is a narrow dust gap.
  • the lower part of the middle pipe 4 is built up from a number of cylinders 6 having increasingly smaller diameters and being partially superimposed concentrically on one another to form a cone, the apex of which is directed downward.
  • the cylinders 6 are provided with oblique vanes 10 which impose a gas whirling suction at constant velocity.
  • Vanes 11 are mounted in parallel to the axis of the middle pipe 4 in the gaps between the successive cylinders 6 to convert the gas whirling motion to a straight-lined motion directed along the pipe 4.
  • the whirling chamber terminates in a drain stub pipe 9 to remove the separated dust.
  • a channel is formed inside the cyclone by the spiral housing of the inlet chamber 1,the heiicai rib 5 wound onto the middle pipe 4 and the oblique vanes 10 attached to the outside of the cylinders 6, whereby the dust-laden gas entering by the stub pipe 7 has a constant peripheral velocity.
  • the cyclone according to this invention can be used for the dust collection of gases in cement plants, foundries and boiler houses.

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  • Cyclones (AREA)
EP19870101417 1986-02-03 1987-02-03 A cyclone with forced gas stream whirling Expired EP0231931B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL25776286A PL146110B1 (en) 1986-02-03 1986-02-03 Cyclone with positively induced speed of gas stream vortex mption
PL257762 1986-02-03

Publications (3)

Publication Number Publication Date
EP0231931A2 EP0231931A2 (en) 1987-08-12
EP0231931A3 EP0231931A3 (en) 1988-07-20
EP0231931B1 true EP0231931B1 (en) 1990-12-12

Family

ID=20030308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870101417 Expired EP0231931B1 (en) 1986-02-03 1987-02-03 A cyclone with forced gas stream whirling

Country Status (4)

Country Link
EP (1) EP0231931B1 (ja)
JP (1) JPS62186961A (ja)
DE (1) DE3766621D1 (ja)
PL (1) PL146110B1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019105321U1 (de) * 2019-09-25 2021-01-04 Sata Gmbh & Co. Kg Zyklonabscheider und Filter mit einem Zyklonabscheider

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1022581C2 (nl) 2003-02-04 2004-08-05 Cds Engineering B V Scheidingscycloon en werkwijze voor het scheiden van een mengsel.
CN106669295A (zh) * 2017-02-04 2017-05-17 深圳市三环再生科技有限公司 一种废润滑油再生旋风进料器
CN112138879B (zh) * 2020-09-02 2021-09-07 东莞福莱仕智能电子科技有限公司 一种旋风分离排尘方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE247339C (ja) * 1911-04-27
DE324260C (de) * 1918-10-18 1920-08-23 Emil Schierholz Vorrichtung zum Auswaschen bzw. Ausscheiden mechanischer Beimengungen aus Gasen, Daempfen und Fluessigkeiten
DE451273C (de) * 1925-10-09 1927-10-24 Maschb A G Fliehkraftstaubabscheider
FR736197A (fr) * 1932-07-01 1932-11-21 Appareil pour séparer des matières pulvérulentes les corps étrangers qui s'y trouvent mêlés
FR1091006A (fr) * 1953-10-08 1955-04-06 Socama Perfectionnements aux dispositifs de filtres cyclonaires

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019105321U1 (de) * 2019-09-25 2021-01-04 Sata Gmbh & Co. Kg Zyklonabscheider und Filter mit einem Zyklonabscheider

Also Published As

Publication number Publication date
EP0231931A3 (en) 1988-07-20
DE3766621D1 (de) 1991-01-24
PL257762A1 (en) 1987-10-19
EP0231931A2 (en) 1987-08-12
PL146110B1 (en) 1988-12-31
JPS62186961A (ja) 1987-08-15

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