EP0277327A2 - Injektor - Google Patents
Injektor Download PDFInfo
- Publication number
- EP0277327A2 EP0277327A2 EP87118744A EP87118744A EP0277327A2 EP 0277327 A2 EP0277327 A2 EP 0277327A2 EP 87118744 A EP87118744 A EP 87118744A EP 87118744 A EP87118744 A EP 87118744A EP 0277327 A2 EP0277327 A2 EP 0277327A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixing tube
- air
- injector according
- injector
- diameter
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1412—Flotation machines with baffles, e.g. at the wall for redirecting settling solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/24—Pneumatic
- B03D1/247—Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type
Definitions
- the innovation relates to an injector according to the preamble of protection claim 1.
- Such an injector is known from US 44 77 341.
- the radial diffuser at the end of the mixing tube with an essentially horizontal outflow — with the mixing tube being arranged essentially vertically — results in a good distribution of the suspension or liquid mixed with the air in the flotation container.
- the flow rates per injector are approximately 4000 to 5000 l / min. at air volumes of around 3000 l / min.
- the feed pipe 1 with which liquid, e.g. the suspension, into which the flotation cell is introduced, behind the aperture 3 into the vertically arranged mixing tube 2, the diameters of the feed tube 1 and the mixing tube 2 being the same here.
- a radial diffuser 6 At the outlet 8 of the mixing tube 2 there is a radial diffuser 6 with a horizontal outflow.
- the air intake openings 4 receive the air via the air supply line 9.
- the air slots 4 are located between 0.2 and 0.5 times the diameter of the mixing tube in terms of flow behind the orifice 3 (distance a).
- the aperture has multiple perforations, round holes being provided as through openings 11 in a symmetrical distribution.
- the air can be regulated by means of the throttle elements 12 shown. There may also be 3, 5, 6 or more preferably round holes.
- the ratio b / D 2.5 to 4 applies to the length b of the mixing tube 2 if D is the diameter of the mixing tube in the area of the air intake openings 4.
- the mixing tube 2 ⁇ is approximately half straight and half conical, the two track parts c and d being approximately the same and corresponding approximately to the length b in FIG. 1.
- the numerical values on the diameters correspond approximately to the actual diameter ratios.
- the radial diffuser part 6 is also provided on the push plate 10 in FIG. 1.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Nozzles (AREA)
- Fuel-Injection Apparatus (AREA)
- Accessories For Mixers (AREA)
- Physical Water Treatments (AREA)
Abstract
Description
- Die Neuerung betrifft einen Injektor entsprechend dem Oberbegriff des Schutzanspruchs 1. Ein solcher Injektor ist bekannt aus US 44 77 341.
- Es ist nötig, einen solchen Injektor für große Durchsatzmengen und große Luftdurchsatzleistungen auszubilden.
- Diese Aufgabe wird neuerungsgemäß durch die Merkmale des kennzeichnenden Teils des Schutzanspruchs 1 gelöst.
- Auf diese Weise wird eine große Luftansaugmenge und eine gute Durchwirbelung und Blasenerzeugung in der Suspension erreicht. Durch den Radialdiffusor am Ende des Mischrohrs mit im wesentlichen horizontaler Ausströmung - wobei das Mischrohr im wesentlichen senkrecht angeordnet ist - erfolgt eine gute Verteilung der mit der Luft durchmischten Suspension oder Flüssigkeit im Flotationsbehälter. Die Durchsatzmengen pro Injektor sind etwa 4000 bis 5000 l/min. bei Luftmengen von etwa 3000 l/min.
- Nachfolgend wird die Neuerung anhand zweier Ausführungsbeispiele erläutert, wobei
- Fig. 1 prinzipmäßig einen Axialschnitt und
- Fig. 2 einen Querschnitt im Bereich der Blende und
- Fig 3 eine andere, prinzipmäßige Darstellung im Axialschnitt zeigen.
- Gemäß Fig. 1 geht das Zuleitungsrohr 1, mit dem Flüssigkeit, z.B. die Suspension, in die Flotationszelle eingeleitet wird, hinter der Blende 3 in das senkrecht angeordnete Mischrohr 2 über, wobei hier die Durchmesser von Zuleitungsrohr 1 und Mischrohr 2 gleich sind. Am Austritt 8 des Mischrohres 2 befindet sich ein Radialdiffusor 6 mit horizontaler Ausströmung. Die Luftansaugöffnungen 4 erhalten die Luft über die Luftzufuhrleitung 9. Die Luftschlitze 4 befinden sich dabei zwischen dem 0,2- und dem 0,5-fachen des Durchmessers des Mischrohrs strömungsmäßig hinter der Blende 3 (Abstand a).
- Dabei weist die Blende eine Mehrfachlochung auf, wobei hier in symmetrischer Verteilung runde Löcher als Durchtrittsöffnungen 11 vorgesehen sind. Die Regulierung der Luft kann mittels der dargestellten Drosselelemente 12 vorgenommen werden. Es können auch 3, 5, 6 oder mehr vorzugsweise runde Löcher sein.
- Für die Länge b des Mischrohres 2 gilt etwa das Verhältnis b/D=2,5 bis 4, wenn D der Durchmesser des Mischrohres im Bereich der Luftansaugöffnungen 4 ist. Im Falle von Fig. 3 ist das Mischrohr 2ʹ etwa zur Hälfte gerade und zur Hälfte konisch ausgebildet, wobei die beiden Streckenteile c und d in etwa gleich sind und etwa der Länge b in der Fig. 1 entsprechen. Die Zahlenwerte an den Durchmessern entsprechen etwa den wirklichen Durchmesserverhältnissen. Dabei ist noch in Fig. 1 der Radialdiffusorteil 6 an der Stoßplatte 10 vorgesehen.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87118744T ATE86532T1 (de) | 1987-02-04 | 1987-12-17 | Injektor. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8701636U DE8701636U1 (de) | 1987-02-04 | 1987-02-04 | |
DE8701636U | 1987-02-04 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0277327A2 true EP0277327A2 (de) | 1988-08-10 |
EP0277327A3 EP0277327A3 (en) | 1990-03-28 |
EP0277327B1 EP0277327B1 (de) | 1993-03-10 |
Family
ID=6804296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87118744A Expired - Lifetime EP0277327B1 (de) | 1987-02-04 | 1987-12-17 | Injektor |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0277327B1 (de) |
AT (1) | ATE86532T1 (de) |
CA (1) | CA1326572C (de) |
DE (2) | DE8701636U1 (de) |
ES (1) | ES2039420T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4309918A1 (en) * | 1993-03-26 | 1993-08-19 | Voith Gmbh J M | Flotation cell with an injector - supplies adequate quantities of air bubbles to fluid suspensions |
DE102009011046A1 (de) * | 2009-02-28 | 2010-09-02 | Voith Patent Gmbh | Flotationsvorrichtung |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR663974A (fr) * | 1928-11-15 | 1929-08-28 | Appareil pour la préparation des bains carbo-gazeux par l'acide carbonique du commerce et la préparation de toute dissolution continue d'un gaz dans un liquide approprié | |
US2252076A (en) * | 1939-10-31 | 1941-08-12 | Standard Oil Dev Co | Fluid mixer |
GB2108858A (en) * | 1981-11-07 | 1983-05-25 | Voith Gmbh J M | Injection apparatus |
EP0243690A2 (de) * | 1986-05-02 | 1987-11-04 | J.M. Voith GmbH | Flotationsbehälter oder -zelle |
-
1987
- 1987-02-04 DE DE8701636U patent/DE8701636U1/de not_active Expired
- 1987-12-17 EP EP87118744A patent/EP0277327B1/de not_active Expired - Lifetime
- 1987-12-17 ES ES198787118744T patent/ES2039420T3/es not_active Expired - Lifetime
- 1987-12-17 DE DE8787118744T patent/DE3784690D1/de not_active Expired - Fee Related
- 1987-12-17 AT AT87118744T patent/ATE86532T1/de not_active IP Right Cessation
-
1988
- 1988-02-04 CA CA000558129A patent/CA1326572C/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR663974A (fr) * | 1928-11-15 | 1929-08-28 | Appareil pour la préparation des bains carbo-gazeux par l'acide carbonique du commerce et la préparation de toute dissolution continue d'un gaz dans un liquide approprié | |
US2252076A (en) * | 1939-10-31 | 1941-08-12 | Standard Oil Dev Co | Fluid mixer |
GB2108858A (en) * | 1981-11-07 | 1983-05-25 | Voith Gmbh J M | Injection apparatus |
EP0243690A2 (de) * | 1986-05-02 | 1987-11-04 | J.M. Voith GmbH | Flotationsbehälter oder -zelle |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4309918A1 (en) * | 1993-03-26 | 1993-08-19 | Voith Gmbh J M | Flotation cell with an injector - supplies adequate quantities of air bubbles to fluid suspensions |
EP0622122A1 (de) * | 1993-03-26 | 1994-11-02 | J.M. Voith GmbH | Flotationszelle mit einem Injektor |
US5465848A (en) * | 1993-03-26 | 1995-11-14 | J. M. Voith Gmbh | Flotation cell and injector |
DE102009011046A1 (de) * | 2009-02-28 | 2010-09-02 | Voith Patent Gmbh | Flotationsvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE8701636U1 (de) | 1987-03-19 |
ATE86532T1 (de) | 1993-03-15 |
CA1326572C (en) | 1994-01-25 |
EP0277327B1 (de) | 1993-03-10 |
ES2039420T3 (es) | 1993-10-01 |
EP0277327A3 (en) | 1990-03-28 |
DE3784690D1 (de) | 1993-04-15 |
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