EP0231931A2 - A cyclone with forced gas stream whirling - Google Patents

A cyclone with forced gas stream whirling Download PDF

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Publication number
EP0231931A2
EP0231931A2 EP87101417A EP87101417A EP0231931A2 EP 0231931 A2 EP0231931 A2 EP 0231931A2 EP 87101417 A EP87101417 A EP 87101417A EP 87101417 A EP87101417 A EP 87101417A EP 0231931 A2 EP0231931 A2 EP 0231931A2
Authority
EP
European Patent Office
Prior art keywords
whirling
pipe
cyclone
cylinders
chamber
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.)
Granted
Application number
EP87101417A
Other languages
German (de)
French (fr)
Other versions
EP0231931A3 (en
EP0231931B1 (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 subject, of the invention is a cyclone with forced gas stream whirling intended for separat-- ing solid particles and liquid droplets from gases.
  • the known cyclones are provided with a gas inlet tangential to the cylindrical upper part of the shell, a gas outlet with a cylindrical riser pipe and an opening for removing the separated dust.
  • the gas velocity in the outlet stub pipe nears that in the inlet stub pipe.
  • the gas whirling chamber offers aerodynamic drag to it and, consequently, the gas stream velocity drops and - the number of revolutions and the centrifugal force decrease, which lowers the efficiency of the cyclone.
  • additional guide vanes are installed in the whirling chamber to make the gas increase the number of revolutions.
  • the cyclone described in US Patent Specification No. 3,960,734 has a taper ring at the inlet to the middle pipe to better separate'the cen- trifugal inner gas stream from the outer one by directly letting it into the middle pipe. The outer one is in an axial whirling motion before it gets into the middle pipe. Also, the taper ring makes the gas to stay longer in the whirling chamber since it offers additional aerodynamic drag.
  • the aim of this present invention has been to develop a design of cyclone with forced gas stream whirling by shaping the whirling chamber inside in such a way as to define the stream with the walls at every of its points to prevent its la- teral propagation under the effect of the inlet and outlet pressure difference.
  • the cyclone with forced gas stream whirling is built up from an inlet chamber provided with a gas inlet stub pipe.
  • the side walls of the inlet chamber have a spiral shape, thereby decreasing gradually the cross section of the gas stream.
  • the inlet chamber is connected to the whirling chamber, its upper part having a cylin- drical shape and its lower part, a conical shape.
  • Inside the cyclone there is a middle pipe installed and terminated from top in an outlet gas stub pipe mounted on the inlet chamber.
  • the cylindrical part of the whirling chamber is filled inside with a worm-wheel which restricts the section of the gas stream.
  • the worm--wheel pitch is selected so that the flowing gas should have at every point a velocity equal to that in the inlet stub pipe. Between the worm- -wheel edge and the shell of the whirling cham- ber there is a barrow dust gap.
  • the lower part of the middle pipe is built up from a number of cylinders having increasingly smaller diameters and partially superimposed concentrically on one another to form a cone, directed downwards with its apex.
  • the cylinders are provided with oblique vanes which impose a gas whirling suction at constant velocity. Vanes are mounted in parallel to the axis of the pipe-in the clearances between the successive cylinders to convert the gas whirling mo- tion to a straight-lined motion directed along the middle pipe.
  • the whirling chamber terminates in a stub pipe to remove the separated dust.
  • a canal is formed thanks to the spiral hous- ing of the inlet chamber, the worm-wheel wound onto the middle pipe and the oblique vanes at- tached to the outside of the cylinders, whereby the dust-laden gas entering by the stub pipe has a constant peripheral velocity.
  • the advantage of the cyclone as per this present invention is its high efficiency with simple design.
  • the cyclone as per this present invention is built up from inlet chamber 1 provided with inlet stub pipe 7.
  • Inlet chamber 1 is connected to the whirling chamber whose upper part is cylindrical 2 and lower, conical 3 in shape.
  • middle pipe 4 is mounted / being connected at top to outlet stub pipe 8.
  • the lower part of pipe 4 is built up from a number of rings 6 having increasingly smaller diameters and partially superimposing one another.
  • Oblique vanes 10 are secured to cylinders 6.
  • vanes 11 are mounted in parallel to the axis of pipe 4.
  • the inside of cylindrical part 2 of the whirling chamber is taken up by worm-wheel 5.
  • Lower cylindrical part 3 of the whirling chamber terminates in drain stub pipe 9.
  • the cyclone as per this present invention can be used for the dust collection of gases in cement plants, foundries and boiler houses.

Abstract

A cyclone with forced gas stream whirling, as per this invention, is built up from an inlet chamber of spirally shaped side walls connected to a whirling chamber, wherein a middle pipe (4) is mounted. On the upper part of the middle pipe (4) a worm-wheel (5) is wound, while the lower part of the middle pipe (4) is built up from a number of cylinders (6) of an increasingly smaller diameter, concentrically superimposing one another. From outside, the cylinders (6) are provided with oblique guide vanes (10) and from inside with vanes being in parallel to the axis of the middle pipe (4). In the inlet chamber there are installed an inlet stub pipe (7) and an outlet stub pipe. The whirling chamber terminates in a drain stub pipe (9).

Description

  • The subject, of the invention is a cyclone with forced gas stream whirling intended for separat-- ing solid particles and liquid droplets from gases. The known cyclones are provided with a gas inlet tangential to the cylindrical upper part of the shell, a gas outlet with a cylindrical riser pipe and an opening for removing the separated dust.
  • The gas velocity in the outlet stub pipe nears that in the inlet stub pipe. The gas whirling chamber offers aerodynamic drag to it and, consequently, the gas stream velocity drops and - the number of revolutions and the centrifugal force decrease, which lowers the efficiency of the cyclone. For the purpose of increasing the efficiency of the cyclone additional guide vanes are installed in the whirling chamber to make the gas increase the number of revolutions. The cyclone described in US Patent Specification No. 3,960,734 has a taper ring at the inlet to the middle pipe to better separate'the cen- trifugal inner gas stream from the outer one by directly letting it into the middle pipe. The outer one is in an axial whirling motion before it gets into the middle pipe. Also, the taper ring makes the gas to stay longer in the whirling chamber since it offers additional aerodynamic drag.
  • The aim of this present invention has been to develop a design of cyclone with forced gas stream whirling by shaping the whirling chamber inside in such a way as to define the stream with the walls at every of its points to prevent its la- teral propagation under the effect of the inlet and outlet pressure difference.
  • The cyclone with forced gas stream whirling is built up from an inlet chamber provided with a gas inlet stub pipe. The side walls of the inlet chamber have a spiral shape, thereby decreasing gradually the cross section of the gas stream. The inlet chamber is connected to the whirling chamber, its upper part having a cylin- drical shape and its lower part, a conical shape. Inside the cyclone, there is a middle pipe installed and terminated from top in an outlet gas stub pipe mounted on the inlet chamber. The cylindrical part of the whirling chamber is filled inside with a worm-wheel which restricts the section of the gas stream. The worm--wheel pitch is selected so that the flowing gas should have at every point a velocity equal to that in the inlet stub pipe. Between the worm- -wheel edge and the shell of the whirling cham- ber there is a barrow dust gap.
  • The lower part of the middle pipe is built up from a number of cylinders having increasingly smaller diameters and partially superimposed concentrically on one another to form a cone, directed downwards with its apex. The cylinders are provided with oblique vanes which impose a gas whirling suction at constant velocity. Vanes are mounted in parallel to the axis of the pipe-in the clearances between the successive cylinders to convert the gas whirling mo- tion to a straight-lined motion directed along the middle pipe. The whirling chamber terminates in a stub pipe to remove the separated dust. Inside the cyclone as per this present invention, a canal is formed thanks to the spiral hous- ing of the inlet chamber, the worm-wheel wound onto the middle pipe and the oblique vanes at- tached to the outside of the cylinders, whereby the dust-laden gas entering by the stub pipe has a constant peripheral velocity.
  • The advantage of the cyclone as per this present invention is its high efficiency with simple design.
  • The subject of this present invention is embodied in the drawing where
    • Fig. 1 shows a view and a partial longitudinal section of the cyclone,
    • Fig. 2 shows a cross section along line d-d,
    • Fig. 3a shows a horizontal section of the conical part of the whirling chamber along the line b-b,
    • Fig. 3b shows a section along the line a-a of Fig. 3a,
    • Fig. 3c shows a section along the line c-c of Fig. 3a.
  • The cyclone as per this present invention is built up from inlet chamber 1 provided with inlet stub pipe 7. Inlet chamber 1 is connected to the whirling chamber whose upper part is cylindrical 2 and lower, conical 3 in shape. Inside the cyclone, middle pipe 4 is mounted/being connected at top to outlet stub pipe 8. The lower part of pipe 4 is built up from a number of rings 6 having increasingly smaller diameters and partially superimposing one another. Oblique vanes 10 are secured to cylinders 6. In the gaps between successive rings 6, vanes 11 are mounted in parallel to the axis of pipe 4. The inside of cylindrical part 2 of the whirling chamber is taken up by worm-wheel 5. Lower cylindrical part 3 of the whirling chamber terminates in drain stub pipe 9.
  • The cyclone as per this present invention can be used for the dust collection of gases in cement plants, foundries and boiler houses.

Claims (2)

1. A cyclone with forced gas stream whirling, built up from an inlet chamber (1) provided with inlet and outlet stub pipes (7,8) and connected to the whirling chamber (2,3) terminating in a drain stub pipe (9), and an inner middle pipe (4) with a worm-wheel (5) wound thereon, characterised in that inlet chamber. (1) has spirally shaped side walls and the lower part of middle pipe (4) is built up from a number of cylinders (6) of increasingly smaller diameter and partially superimposed concentrically on one another, cylinders 6 being provided from outside with oblique guide vanes (10) and, from inside, with blades (11) being parallel to the centre line of middle pipe (4) and used for converting the gas whirling motion to a straight--lined motion.
2. A cyclone as per Claim 1, characterised in that a gas canal is defined inside by, successively, the spiral housing of inlet chamber 1, worm--wheel (5) wound onto pipe(4)and oblique vanes (10) secured to cylinders (6), thanks to which the entering gas has a constant peripheral velocity.
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 true EP0231931A2 (en) 1987-08-12
EP0231931A3 EP0231931A3 (en) 1988-07-20
EP0231931B1 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 (en)
JP (1) JPS62186961A (en)
DE (1) DE3766621D1 (en)
PL (1) PL146110B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1022581C2 (en) * 2003-02-04 2004-08-05 Cds Engineering B V Separation cyclone and method for separating a mixture.
CN106669295A (en) * 2017-02-04 2017-05-17 深圳市三环再生科技有限公司 Waste lubricating oil regeneration cyclone feeder
WO2022047731A1 (en) * 2020-09-02 2022-03-10 东莞福莱仕智能电子科技有限公司 Method for discharging dust by using cyclone separation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019105321U1 (en) * 2019-09-25 2021-01-04 Sata Gmbh & Co. Kg Cyclone separator and filter with a cyclone separator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR437971A (en) * 1911-04-27 1912-05-04 Fernand Perdrizet Centrifugal dust separator
DE324260C (en) * 1918-10-18 1920-08-23 Emil Schierholz Device for washing or separating mechanical impurities from gases, vapors and liquids
DE451273C (en) * 1925-10-09 1927-10-24 Maschb A G Centrifugal dust separator
FR736197A (en) * 1932-07-01 1932-11-21 Apparatus for separating from powdery substances the foreign bodies which are mixed therein
FR1091006A (en) * 1953-10-08 1955-04-06 Socama Improvements to cyclonic filter devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR437971A (en) * 1911-04-27 1912-05-04 Fernand Perdrizet Centrifugal dust separator
DE324260C (en) * 1918-10-18 1920-08-23 Emil Schierholz Device for washing or separating mechanical impurities from gases, vapors and liquids
DE451273C (en) * 1925-10-09 1927-10-24 Maschb A G Centrifugal dust separator
FR736197A (en) * 1932-07-01 1932-11-21 Apparatus for separating from powdery substances the foreign bodies which are mixed therein
FR1091006A (en) * 1953-10-08 1955-04-06 Socama Improvements to cyclonic filter devices

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1022581C2 (en) * 2003-02-04 2004-08-05 Cds Engineering B V Separation cyclone and method for separating a mixture.
EP1445025A1 (en) * 2003-02-04 2004-08-11 CDS Engineering B.V. Separating cyclone and method for separating a mixture
US7066987B2 (en) 2003-02-04 2006-06-27 Cds Engineering B.V. Separating cyclone and method for separating a mixture
CN106669295A (en) * 2017-02-04 2017-05-17 深圳市三环再生科技有限公司 Waste lubricating oil regeneration cyclone feeder
WO2022047731A1 (en) * 2020-09-02 2022-03-10 东莞福莱仕智能电子科技有限公司 Method for discharging dust by using cyclone separation
EP3988216A4 (en) * 2020-09-02 2022-09-14 Fornice Intelligent Technology Co, Ltd. Method for discharging dust by using cyclone separation

Also Published As

Publication number Publication date
DE3766621D1 (en) 1991-01-24
EP0231931A3 (en) 1988-07-20
PL146110B1 (en) 1988-12-31
EP0231931B1 (en) 1990-12-12
JPS62186961A (en) 1987-08-15
PL257762A1 (en) 1987-10-19

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