EP0277327A2 - Injecteur - Google Patents

Injecteur Download PDF

Info

Publication number: EP0277327A2
Authority: EP; European Patent Office
Prior art keywords: mixing tube; air; injector according; injector; diameter
Prior art date: 1987-02-04
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

EP87118744A

Other languages

German (de)

English (en)

Other versions

EP0277327B1 (fr

EP0277327A3 (en

Inventor

Peter Schweiss

Hans-Dieter Dörflinger

Werner Cechovsky

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.)

JM Voith GmbH

Original Assignee

JM Voith GmbH

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.)

1987-02-04

Filing date

1987-12-17

Publication date

1988-08-10

1987-12-17 Application filed by JM Voith GmbH filed Critical JM Voith GmbH

1987-12-17 Priority to AT87118744T priority Critical patent/ATE86532T1/de

1988-08-10 Publication of EP0277327A2 publication Critical patent/EP0277327A2/fr

1990-03-28 Publication of EP0277327A3 publication Critical patent/EP0277327A3/de

1993-03-10 Application granted granted Critical

1993-03-10 Publication of EP0277327B1 publication Critical patent/EP0277327B1/fr

2007-12-17 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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)
Physical Water Treatments (AREA)
Fuel-Injection Apparatus (AREA)
Accessories For Mixers (AREA)

EP87118744A 1987-02-04 1987-12-17 Injecteur Expired - Lifetime EP0277327B1 (fr)

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	Injektor
DE8701636U		1987-02-04

Publications (3)

Publication Number	Publication Date
EP0277327A2 true EP0277327A2 (fr)	1988-08-10
EP0277327A3 EP0277327A3 (en)	1990-03-28
EP0277327B1 EP0277327B1 (fr)	1993-03-10

Family

ID=6804296

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP87118744A Expired - Lifetime EP0277327B1 (fr)	1987-02-04	1987-12-17	Injecteur

Country Status (5)

Country	Link
EP (1)	EP0277327B1 (fr)
AT (1)	ATE86532T1 (fr)
CA (1)	CA1326572C (fr)
DE (2)	DE8701636U1 (fr)
ES (1)	ES2039420T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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
DE3144386C2 (de) *	1981-11-07	1983-12-29	J.M. Voith Gmbh, 7920 Heidenheim	Injektorflotationsapparat
DE3614933C1 (de) *	1986-05-02	1987-10-22	Voith Gmbh J M	Flotationsbehaelter oder -zelle

1987
- 1987-02-04 DE DE8701636U patent/DE8701636U1/de not_active Expired
- 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
- 1987-12-17 EP EP87118744A patent/EP0277327B1/fr not_active Expired - Lifetime
- 1987-12-17 ES ES198787118744T patent/ES2039420T3/es not_active Expired - Lifetime
1988
- 1988-02-04 CA CA000558129A patent/CA1326572C/fr not_active Expired - Fee Related

Cited By (4)

* Cited by examiner, † Cited by third party
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 (fr) *	1993-03-26	1994-11-02	J.M. Voith GmbH	Cellule de flottation avec un injecteur
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
ES2039420T3 (es)	1993-10-01
EP0277327B1 (fr)	1993-03-10
EP0277327A3 (en)	1990-03-28
CA1326572C (fr)	1994-01-25
DE3784690D1 (de)	1993-04-15
ATE86532T1 (de)	1993-03-15

Legal Events

Date	Code	Title	Description
1988-06-25	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1988-08-10	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FR GB IT LI NL SE
1990-02-08	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1990-03-28	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): AT BE CH DE ES FR GB IT LI NL SE
1991-01-16	17P	Request for examination filed	Effective date: 19901004
1991-10-16	17Q	First examination report despatched	Effective date: 19910902
1993-01-22	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1993-03-10	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT BE CH DE ES FR GB IT LI NL SE
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1993-04-21	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19930324
1993-05-21	ITF	It: translation for a ep patent filed
1993-05-28	ET	Fr: translation filed
1993-10-01	REG	Reference to a national code	Ref country code: ES Ref legal event code: FG2A Ref document number: 2039420 Country of ref document: ES Kind code of ref document: T3
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1994-01-13	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1994-03-02	26N	No opposition filed
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 87118744.9
1996-12-16	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19961216 Year of fee payment: 10
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1997-01-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 19970130 Year of fee payment: 10
1997-11-21	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19971121 Year of fee payment: 11
1997-11-25	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 19971125 Year of fee payment: 11
1997-12-15	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: ES Payment date: 19971215 Year of fee payment: 11
1997-12-18	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19971218
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1998-06-30	BERE	Be: lapsed	Owner name: J.M. VOITH G.M.B.H. Effective date: 19971231
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