CA1159404A - Vortex separator with central tengential heavies outlet and upper-most lights outlets - Google Patents
Vortex separator with central tengential heavies outlet and upper-most lights outletsInfo
- Publication number
- CA1159404A CA1159404A CA000366625A CA366625A CA1159404A CA 1159404 A CA1159404 A CA 1159404A CA 000366625 A CA000366625 A CA 000366625A CA 366625 A CA366625 A CA 366625A CA 1159404 A CA1159404 A CA 1159404A
- Authority
- CA
- Canada
- Prior art keywords
- working chamber
- annular body
- diameter
- cylindrical
- inlet
- 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
Links
- 239000000463 material Substances 0.000 claims abstract description 19
- 210000003739 neck Anatomy 0.000 claims description 29
- 239000000727 fraction Substances 0.000 claims 1
- 229920006327 polystyrene foam Polymers 0.000 abstract description 7
- 239000008187 granular material Substances 0.000 abstract description 6
- 238000011109 contamination Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
- D21D5/22—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in apparatus with a vertical axis
-
- 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
- B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
-
- 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
- B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
- B04C3/04—Multiple arrangement thereof
-
- 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
- B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
- B04C3/06—Construction of inlets or outlets to the vortex chamber
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
- D21D5/24—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in cyclones
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cyclones (AREA)
- Paper (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Centrifugal Separators (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A vertical turbulent separator for classifying aqueous paper material comprises a lower cylindrical inlet chamber having an inlet arranged thereon to impart to the aqueous paper material a rotational flow path, an upper cylindrical working chamber and an intermediate annular body connecting the lower and upper chambers. The aqueous paper material is separated as a result of centrifugal forces into fractions of varying specific weight distributed in the form of rotational rings along the inner walls of the annular body and working chamber. A first outlet is provided on the annular body for removing a heavy fraction, and a second outlet and a discharge tube are provided on the working chamber for removing respectively a classified fraction and a light fraction. The separator of the invention is particularly useful for separating granules of polystyrene foam.
A vertical turbulent separator for classifying aqueous paper material comprises a lower cylindrical inlet chamber having an inlet arranged thereon to impart to the aqueous paper material a rotational flow path, an upper cylindrical working chamber and an intermediate annular body connecting the lower and upper chambers. The aqueous paper material is separated as a result of centrifugal forces into fractions of varying specific weight distributed in the form of rotational rings along the inner walls of the annular body and working chamber. A first outlet is provided on the annular body for removing a heavy fraction, and a second outlet and a discharge tube are provided on the working chamber for removing respectively a classified fraction and a light fraction. The separator of the invention is particularly useful for separating granules of polystyrene foam.
Description
1 1594~4 The invention relates to a vertical turbulent separator for classifying aqueous paper material, particularly for separating granules of polystyrene foam.
The turbulent separators which are presently used, have a conical working chamber with an inlet in the upper part of the separator, which provides an efficient separation of point-shaped and fibrous contaminations from aqueous paper material. If, however, granules of polystyrene foam have to be separated, such type OL separator operates unsatisfactorily, as the outlet neck becomes clogged. The efficiency of separa-tion of granules of polystyrene foam is in currently used turbulent separators rather low.
It is an object of this invention to overcome the above drawback and to provide a turbulent separator capable of separating efficiently also granules of polystyrene foam from aqueous paper material.
According to a broad aspect of the invention, there is provided a vertical turbulent separator for classifying aqueous paper material, comprising a lower cylindrical inlet chamber having inlet means arranged thereon to impart to the aqueous paper material a rotational flow path, an upper cylin-drical working chamber and an intermediate annular body connect-ing the lower and upper chambers, wherein the aqueous paper material is separated as a result of centrifugal forces into fractions of varying specific weight distributed in the form of rotational rings along the inner walls of the annular body and working chamber, first outlet means provided on the annular body for removing a heavy fraction, and second outlet means and discharge means provided on the working chamber for remov-ing respectively a classified fraction and a light fraction.
A preferred construction in accordance with theinvention comprises a cylindrical inlet chamber having an 1 1594~4 inlet neck arranged tangentially at a lower part thereof, a cylindrical delimitation body arranged concentrically within the inlet chamber and having an upper conical extension located above the inlet neck, an annular body connected to the top of the inlet cha~ber and arranged concentrically thereof, the annular body having a first outlet neck tangentially arranged thereon, a cylindrical working chamber connected to an upper part of the annular body and arranged concentrically thereof, the working chamber having a lower end portion depending into the annular body, a second outlet neck arranged tangentially at an upper part of the working chamber, and a discharge tube depending from the top of the working chamber and arranged concentrically thereof, the tube having an outwardly projecting truncated conical neck.
-- In a preferred embodiment of the above separator, the diameter of the annular body is larger than the diameter of the cylindrical inlet chamber, the diameter of the cylindri-cal inlet chamber is larger than the diameter of the cylindri-cal working chamber, the diameter of the cylindrical working chamber is larger than the diameter of the cylindrical delimi-tation body, and the diameter of the cylindrical delimitation body is smaller than the diameter of the discharge tube.
According to a further preferred embodiment, the first and second outlet necks are arranged to provide extensions of the flow path imparted by the inlet neck.
The turbulent separator according to this invention has the advantage of being highly efficient for separating granules of polystyrene foam. Experimental tests have shown an efficiency for the separation of polystyrene foam of 90 to 95%. Another advantage is that the separator of the inven-tion is not demanding on power, and pressure losses are within the range of 50 to 100 kPa. A further advantage lies 1 15940~
in that the power supplied is simultaneously utilized for separating contaminations of higher specific weight.
Preferred embodiments of the invention will now be described in greater details, with reference to the appended drawings, in which:
Figure 1 is a sectional elevation of a vertical turbulent separator according to the invention;
Figure 2 is an enlarged sectional elevation of the annular body and cut-away portions of the adjacent inlet and working chambers of the separator shown in Figure l; and Figures 3, 4 and ~ are cross-sections taken along lines 3-3, 4-4 and 5-5 respectively~of Figure 1.
Referring first to Fig. 1, the lower part of the separator is seen to comprise a cylindrical inlet chamber 1 having a diameter Dl, in the lowest part of which an inlet neck 2 is tangentially arranged. A cylindrical delimitation body 3 having a diameter D3 is arranged concentrically inside the cylindrical inlet chamber l; the delimitation body 3 has an upper conical extension 3a located above the inlet neck 2.
An annular body 4 having an external diameter D4 is connected to the top of the cylindrical inlet chamber 1 and arranged concentrically thereof; the annular body 4 has a first outlet neck 5 tangentially arranged thereon. A cylindrical working chamber 6 having a diameter D6 is connected to the top of-the annular body 4 and arranged concentrically thereof, the work-ing chamber 6 has a lower end portion 6a depending into the annular body 4. A second outlet neck 7 is arranged tangen-tially at the upper part of the working chamber 6. A dis-charge tube 8 having a diameter D8 depends from the top ofthe w~rking chamber 6 and is arranged concentrically thereof;
the tube 8 has a truncated conical neck 9 projecting out-1 1594~4 wardly from the top of the working chamber 6.
As more clearly shown in Fig. 2, the diameter D4of the annular body ~ is larger than the diameter Dl of the cylindrical inlet chamber 1 and the diameter Dl of the cylin-drical inlet chamber 1 is larger than the diameter D6 of the cylindrical working chamber 6. The lower end 6a of the cylindrical working chamber 6 projects into the annular body 4.
As shown in Figures 3, 4 and 5, the inlet neck 2, the first outlet neck 5 and the second outlet neck 7 are arranged tangentially to the inlet chamber 1, the annular body 4 and the working chamber 6, respectively. It is also possible to pr~vide the inlet neck 2 in a spiral arrangement without deviating from the scope of this invention. The outlet necks 5 and 7 are disposed so as to provide extensions of the flow path imparted by the inlet neck 2.
The vertical turbulent separator is operated in the following manner.
The aqueous paper material is fed under pressure through the tangential inlet neck 2 into the cylindrical inlet chamber 1, where the linear flow path of the aqueous paper material is imparted to a rotational direction. Due to centrifugal forces the material is separated into fractions of varying specific weight distributed in the form of rota-tional rings along the inner walls of the separator. The delimitation body 3 contributes to the formation of the lightest fraction. By subsequent passage of the material through the separator, the heavy contaminations are first separated in the annular body 4. These heavy contaminations are removed from the annular body 4 through the first tangen-tial outlet 5 and collected in a chamber (not shown).
The light contaminations are collected in the cylindrical working chamber 6 in the separator axis and are removed together with a small amount of the aqueous paper material (about 1 %) through the truncated conical neck 9.
The classified material is removed through the second tangential outlet neck 7.
The turbulent separators which are presently used, have a conical working chamber with an inlet in the upper part of the separator, which provides an efficient separation of point-shaped and fibrous contaminations from aqueous paper material. If, however, granules of polystyrene foam have to be separated, such type OL separator operates unsatisfactorily, as the outlet neck becomes clogged. The efficiency of separa-tion of granules of polystyrene foam is in currently used turbulent separators rather low.
It is an object of this invention to overcome the above drawback and to provide a turbulent separator capable of separating efficiently also granules of polystyrene foam from aqueous paper material.
According to a broad aspect of the invention, there is provided a vertical turbulent separator for classifying aqueous paper material, comprising a lower cylindrical inlet chamber having inlet means arranged thereon to impart to the aqueous paper material a rotational flow path, an upper cylin-drical working chamber and an intermediate annular body connect-ing the lower and upper chambers, wherein the aqueous paper material is separated as a result of centrifugal forces into fractions of varying specific weight distributed in the form of rotational rings along the inner walls of the annular body and working chamber, first outlet means provided on the annular body for removing a heavy fraction, and second outlet means and discharge means provided on the working chamber for remov-ing respectively a classified fraction and a light fraction.
A preferred construction in accordance with theinvention comprises a cylindrical inlet chamber having an 1 1594~4 inlet neck arranged tangentially at a lower part thereof, a cylindrical delimitation body arranged concentrically within the inlet chamber and having an upper conical extension located above the inlet neck, an annular body connected to the top of the inlet cha~ber and arranged concentrically thereof, the annular body having a first outlet neck tangentially arranged thereon, a cylindrical working chamber connected to an upper part of the annular body and arranged concentrically thereof, the working chamber having a lower end portion depending into the annular body, a second outlet neck arranged tangentially at an upper part of the working chamber, and a discharge tube depending from the top of the working chamber and arranged concentrically thereof, the tube having an outwardly projecting truncated conical neck.
-- In a preferred embodiment of the above separator, the diameter of the annular body is larger than the diameter of the cylindrical inlet chamber, the diameter of the cylindri-cal inlet chamber is larger than the diameter of the cylindri-cal working chamber, the diameter of the cylindrical working chamber is larger than the diameter of the cylindrical delimi-tation body, and the diameter of the cylindrical delimitation body is smaller than the diameter of the discharge tube.
According to a further preferred embodiment, the first and second outlet necks are arranged to provide extensions of the flow path imparted by the inlet neck.
The turbulent separator according to this invention has the advantage of being highly efficient for separating granules of polystyrene foam. Experimental tests have shown an efficiency for the separation of polystyrene foam of 90 to 95%. Another advantage is that the separator of the inven-tion is not demanding on power, and pressure losses are within the range of 50 to 100 kPa. A further advantage lies 1 15940~
in that the power supplied is simultaneously utilized for separating contaminations of higher specific weight.
Preferred embodiments of the invention will now be described in greater details, with reference to the appended drawings, in which:
Figure 1 is a sectional elevation of a vertical turbulent separator according to the invention;
Figure 2 is an enlarged sectional elevation of the annular body and cut-away portions of the adjacent inlet and working chambers of the separator shown in Figure l; and Figures 3, 4 and ~ are cross-sections taken along lines 3-3, 4-4 and 5-5 respectively~of Figure 1.
Referring first to Fig. 1, the lower part of the separator is seen to comprise a cylindrical inlet chamber 1 having a diameter Dl, in the lowest part of which an inlet neck 2 is tangentially arranged. A cylindrical delimitation body 3 having a diameter D3 is arranged concentrically inside the cylindrical inlet chamber l; the delimitation body 3 has an upper conical extension 3a located above the inlet neck 2.
An annular body 4 having an external diameter D4 is connected to the top of the cylindrical inlet chamber 1 and arranged concentrically thereof; the annular body 4 has a first outlet neck 5 tangentially arranged thereon. A cylindrical working chamber 6 having a diameter D6 is connected to the top of-the annular body 4 and arranged concentrically thereof, the work-ing chamber 6 has a lower end portion 6a depending into the annular body 4. A second outlet neck 7 is arranged tangen-tially at the upper part of the working chamber 6. A dis-charge tube 8 having a diameter D8 depends from the top ofthe w~rking chamber 6 and is arranged concentrically thereof;
the tube 8 has a truncated conical neck 9 projecting out-1 1594~4 wardly from the top of the working chamber 6.
As more clearly shown in Fig. 2, the diameter D4of the annular body ~ is larger than the diameter Dl of the cylindrical inlet chamber 1 and the diameter Dl of the cylin-drical inlet chamber 1 is larger than the diameter D6 of the cylindrical working chamber 6. The lower end 6a of the cylindrical working chamber 6 projects into the annular body 4.
As shown in Figures 3, 4 and 5, the inlet neck 2, the first outlet neck 5 and the second outlet neck 7 are arranged tangentially to the inlet chamber 1, the annular body 4 and the working chamber 6, respectively. It is also possible to pr~vide the inlet neck 2 in a spiral arrangement without deviating from the scope of this invention. The outlet necks 5 and 7 are disposed so as to provide extensions of the flow path imparted by the inlet neck 2.
The vertical turbulent separator is operated in the following manner.
The aqueous paper material is fed under pressure through the tangential inlet neck 2 into the cylindrical inlet chamber 1, where the linear flow path of the aqueous paper material is imparted to a rotational direction. Due to centrifugal forces the material is separated into fractions of varying specific weight distributed in the form of rota-tional rings along the inner walls of the separator. The delimitation body 3 contributes to the formation of the lightest fraction. By subsequent passage of the material through the separator, the heavy contaminations are first separated in the annular body 4. These heavy contaminations are removed from the annular body 4 through the first tangen-tial outlet 5 and collected in a chamber (not shown).
The light contaminations are collected in the cylindrical working chamber 6 in the separator axis and are removed together with a small amount of the aqueous paper material (about 1 %) through the truncated conical neck 9.
The classified material is removed through the second tangential outlet neck 7.
Claims (4)
1. A vertical turbulent separator for classifying aqueous paper material, comprising a lower cylindrical inlet chamber having inlet means arranged thereon to impart to said aqueous paper material a rotational flow path, an upper cylin-drical working chamber and an intermediate annular body connect-ing said lower and upper chambers,wherein said aqueous paper material is separated as a result of centrifugal forces into fractions of varying specific weight distributed in the form of rotational rings along the inner walls of said annular body and working chamber, first outlet means provided on said annular body for removing a heavy fraction, and second outlet means and discharge means provided on said working chamber for removing respectively a classified fraction and a light frac-tion.
2. A vertical turbulent separator for classifying aqueous paper material, comprising a cylindrical inlet chamber having an inlet neck arranged tangentially at a lower part thereof, a cylindrical delimitation body arranged concentri-cally within said inlet chamber and having an upper conical extension located above said inlet neck, an annular body connected to the top of said inlet chamber and arranged concentrically thereof, said annular body having a first outlet neck tangentially arranged thereon, a cylindrical working chamber connected to an upper part of said annular body and arranged concentrically thereof, said working chamber having a lower end portion depending into said annular body, a second outlet neck arranged tangentially at an upper part of said working chamber, and a discharge tube depending from the top of said working chamber and arranged concentrically thereof, said tube having an outwardly projecting truncated conical neck.
3. A vertical turbulent separator as claimed in claim 2, wherein the diameter of the annular body is larger than the diameter of the cylindrical inlet chamber, the diameter of the cylindrical inlet chamber is larger than the diameter of the cylindrical working chamber, the diameter of the cylin-drical working chamber is larger than the diameter of the cylindrical delimitation body, and the diameter of the cylin-drical delimitation body is smaller than the diameter of the discharge tube.
4. A vertical turbulent separator as claimed in claims 2 or 3, wherein first and second outlet necks are arranged to provide extensions of the flow path imparted by said inlet neck.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CSPV8677-79 | 1979-12-12 | ||
| CS867779A CS206478B1 (en) | 1979-12-12 | 1979-12-12 | Vertical turbulent sorter for sorting paper stock,especially for sorting foamed polystyrene granules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1159404A true CA1159404A (en) | 1983-12-27 |
Family
ID=5437666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000366625A Expired CA1159404A (en) | 1979-12-12 | 1980-12-11 | Vortex separator with central tengential heavies outlet and upper-most lights outlets |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT381737B (en) |
| CA (1) | CA1159404A (en) |
| CS (1) | CS206478B1 (en) |
| DD (1) | DD156484A3 (en) |
| DE (1) | DE3043729A1 (en) |
| FI (1) | FI803689L (en) |
| SE (1) | SE447210B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605495A (en) * | 1984-03-19 | 1986-08-12 | Bird Machine Company, Inc. | Hydrocyclone separator apparatus |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1328629C (en) * | 1987-09-05 | 1994-04-19 | Peter Gregory Michaluk | Separator |
| FI81397C (en) * | 1988-07-12 | 1990-10-10 | Ahlstroem Oy | Method and apparatus for removing light material from a fiber's suspension |
| FR2662618B1 (en) * | 1990-06-05 | 1993-01-29 | Inst Francais Du Petrole | CO-CURRENT CYCLONIC SEPARATOR AND ITS APPLICATIONS. |
| FI90358C (en) * | 1992-05-19 | 1994-01-25 | Pom Technology Oy Ab | Method and apparatus for sorting a fiber suspension |
| DE69618550T2 (en) * | 1995-12-01 | 2002-08-22 | Exxonmobil Res & Eng Co | Multi-stage gas / solids separation device and process |
| US5899342A (en) * | 1997-06-04 | 1999-05-04 | Voith Sulzer Paper Technology North America, Inc. | Hydrocyclone separator |
| CZ2010115A3 (en) * | 2010-02-16 | 2011-08-17 | Novopol A.S. | Apparatus for processing waste expanded polystyrene and process for processing waste expanded polystyrene |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6751147U (en) * | 1968-09-20 | 1969-02-13 | Voith Getriebe Kg Heidenheim | Vortex separator for separating gas from liquid |
-
1979
- 1979-12-12 CS CS867779A patent/CS206478B1/en unknown
-
1980
- 1980-11-20 DE DE19803043729 patent/DE3043729A1/en active Granted
- 1980-11-24 DD DD22546180A patent/DD156484A3/en not_active IP Right Cessation
- 1980-11-27 FI FI803689A patent/FI803689L/en not_active Application Discontinuation
- 1980-12-08 SE SE8008600A patent/SE447210B/en not_active IP Right Cessation
- 1980-12-11 AT AT601680A patent/AT381737B/en not_active IP Right Cessation
- 1980-12-11 CA CA000366625A patent/CA1159404A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605495A (en) * | 1984-03-19 | 1986-08-12 | Bird Machine Company, Inc. | Hydrocyclone separator apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| SE8008600L (en) | 1981-06-13 |
| CS206478B1 (en) | 1981-06-30 |
| SE447210B (en) | 1986-11-03 |
| AT381737B (en) | 1986-11-25 |
| DD156484A3 (en) | 1982-09-01 |
| ATA601680A (en) | 1986-04-15 |
| DE3043729C2 (en) | 1988-11-10 |
| DE3043729A1 (en) | 1981-06-19 |
| FI803689L (en) | 1981-06-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |