EP0307346A2 - Anneau pour le dispositif de fermeture à obturation rotatif - Google Patents

Anneau pour le dispositif de fermeture à obturation rotatif Download PDF

Info

Publication number: EP0307346A2
Authority: EP; European Patent Office
Prior art keywords: sealing ring; plate; slide; rotary slide; closure according
Prior art date: 1987-09-11
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

EP88730199A

Other languages

German (de)

English (en)

Other versions

EP0307346A3 (en

EP0307346B1 (fr

Inventor

Markus Dipl.-Ing. Bammer

Arnold Dipl.-Ing. Pfeiffer

Alfred Dipl.-Ing. Mohr

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.)

Vodafone GmbH

Original Assignee

Mannesmann AG

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.)

1987-09-11

Filing date

1988-09-05

Publication date

1989-03-15

1988-09-05 Application filed by Mannesmann AG filed Critical Mannesmann AG

1989-03-15 Publication of EP0307346A2 publication Critical patent/EP0307346A2/fr

1990-05-16 Publication of EP0307346A3 publication Critical patent/EP0307346A3/de

1992-08-26 Application granted granted Critical

1992-08-26 Publication of EP0307346B1 publication Critical patent/EP0307346B1/fr

2008-09-05 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
- B22D41/26—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings characterised by a rotatively movable plate

Definitions

the invention relates to a rotary slide closure for a casting vessel provided with a bottom pouring opening, with a bottom plate fastened to the bottom of the vessel and with a sliding plate rotatably and pivotably arranged thereon, both plates being provided with refractory elements and with one arranged between the bottom and sliding plate at right angles to the pouring opening Sealing ring.
a leakage-preventing arrangement for a rotary slide closure in which a sealing ring is arranged, which is arranged concentrically with the axis of rotation of the slide plate and closes the gap formed between the contacting surfaces of the two plates.
the sealing ring is arranged once on the outer circumference of both plates and, in another embodiment, is provided in the form of an annular groove between the two plates. Both embodiments have the disadvantage that the ring has an insufficient mass, which is not able to cool the melt. The result of this is that when only small amounts of molten material exit, the sealing ring is melted and cannot perform its sealing function.
the sealing rings known from this document also have the disadvantage that they cannot compensate for changes in the geometry of the slide plates during operation. Between the idle state and the operating state, the slide is subject to high temperature differences, which lead to geometric changes in the slide that are larger than the required size of the readjustment capability of the sealing element.
the object of the invention is to increase the operational reliability of the generic rotary slide valve closure, to extend its service life and to prevent liquid melt from escaping from the slide valve.
this object is achieved by an annular chamber which is delimited by the sealing ring, the base plate and the slide plate, and the seal ring which has a sealing surface on the side facing the slide plate and an elastic sealing element on the side facing the base plate is provided between the sealing ring and the base plate.
the sealing ring is arranged between the base plate and the slide plate at a distance from the refractory lining.
the sealing ring is supported at least by its own weight on the slide plate.
the support surface is designed so that the dead weight is sufficient to prevent the formation of gaps. This ensures a secure seal against possible leakage of melt material.
This contact pressure is further supported by the elastic sealing element arranged on the side of the sealing ring facing the base plate. V-shaped rings can advantageously be used here.
Both seals, the sealing lip and the V-shaped sealing ring, enable a gas-tight shut-off, which remains effective even with major changes in the valve geometry. In the majority of cases this prevents the gap from reaching a size from which liquid metal can escape. If liquid metal is nevertheless pressed from the spout through the sealing gap between the refractory linings of the base plate and the slide plate, it flows into the chamber provided according to the invention within the rotary slide valve closure. The outflowing jet of melt hits the sealing ring and then flows into the cavity formed by the base plate, the slide plate and the sealing ring. The mass of the components surrounding the chamber has a cooling capacity which is sufficient to extract enough heat from the melt that it becomes viscous to pasty.
the existing cooling ability of the slide elements and the sealing ring with its sufficient mass are reinforced by the shape of the sealing ring.
the metal jet when it emerges from the sealing surfaces between the ff plates, strikes the conical shape of the inner surface of the sealing ring, which increases concentrically to the outside. This ensures that the metal jet is distributed only in one plane perpendicular to the pouring opening. The consequence of this is that the largest possible surface area of the plates and the sealing ring come into contact with the melt and can dissipate heat.
the size of the chamber and the sealing ring is designed according to the invention depending on the required heat dissipation from the melt material.
the slide plate advantageously has a nose with a shape which is designed such that the sealing ring cannot fall out when the slide is opened.
the casting vessel 10 (not shown) has a metallic pan base 11 with a bottom pouring opening 12.
the bottom plate 21 is arranged in a stationary manner on this pan bottom 11.
the slide plate 22 is pressed against the base plate 21 by means of springs (not shown).
the slide plate 22 is rotatable via the toothed ring 24 and the axis I and is thereby mounted on the ball bearing 23.
the refractory linings 27, 28 are fastened to the plates 21, 22 by means of holding elements 25, 26.
the slide plate 22 has an annular nose 29 which corresponds in its contour to that of the sealing ring 30.
the sealing ring 30 is arranged in the form that parts of the plates 21, 22 and the sealing ring 30 form a chamber 40.
the sealing ring 30 has a sealing surface 31 which is supported on the slide plate 22.
the concentric inner surface of the sealing ring 30 has a double-conical shape, the lower half 32 and the upper half 33 of the inner surface 36 having the greatest diameter at the level of the sealing surfaces of the refractory lining 27, 28.
An elastic sealing element 35 is arranged in the area of the head surface 34.
the elastic sealing element 35 is a metallic ring 37 which has a V-shaped shape.
the V-shaped ring 37 is arranged in a bulge 38 of the sealing ring 30.
the lug 29 and the bulge 38 have a shape which, when the slide plate 22 is opened, the sealing ring 30 and the elastic sealing element 35 cannot fall out of the rotary slide 20.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

EP19880730199 1987-09-11 1988-09-05 Anneau pour le dispositif de fermeture à obturation rotatif Expired - Lifetime EP0307346B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19873731021 DE3731021A1 (de)	1987-09-11	1987-09-11	Ring fuer drehschieberverschluss
DE3731021		1987-09-11

Publications (3)

Publication Number	Publication Date
EP0307346A2 true EP0307346A2 (fr)	1989-03-15
EP0307346A3 EP0307346A3 (en)	1990-05-16
EP0307346B1 EP0307346B1 (fr)	1992-08-26

Family

ID=6336088

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19880730199 Expired - Lifetime EP0307346B1 (fr)	1987-09-11	1988-09-05	Anneau pour le dispositif de fermeture à obturation rotatif

Country Status (3)

Country	Link
EP (1)	EP0307346B1 (fr)
JP (1)	JPH0199772A (fr)
DE (1)	DE3731021A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE69332116T3 (de) *	1993-04-19	2006-09-28	Vesuvius France S.A.	Vorrichtung und Verfahren zum Gießen mit einer zementfreien Verbindung des Schiebeverschlusses mit dem metallurgischen Gefäß

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL241584A (fr) *	1959-06-15
CH523730A (de) *	1970-05-25	1972-06-15	Interstop Ag	Schieberverschluss an Behälter für flüssige Schmelzen
JPS5127409B2 (fr) *	1973-02-12	1976-08-12

1987
- 1987-09-11 DE DE19873731021 patent/DE3731021A1/de active Granted
1988
- 1988-09-05 EP EP19880730199 patent/EP0307346B1/fr not_active Expired - Lifetime
- 1988-09-09 JP JP22633188A patent/JPH0199772A/ja active Pending

Also Published As

Publication number	Publication date
JPH0199772A (ja)	1989-04-18
DE3731021C2 (fr)	1990-01-25
EP0307346A3 (en)	1990-05-16
DE3731021A1 (de)	1989-03-23
EP0307346B1 (fr)	1992-08-26

Legal Events

Date	Code	Title	Description
1989-01-28	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
1989-03-15	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): BE FR IT LU SE
1990-03-29	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1990-05-16	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): BE FR IT LU SE
1990-08-01	17P	Request for examination filed	Effective date: 19900523
1991-11-21	17Q	First examination report despatched	Effective date: 19911007
1992-07-10	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1992-08-07	ITF	It: translation for a ep patent filed
1992-08-26	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): BE FR IT LU SE
1992-08-26	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19920826
1992-09-11	ET	Fr: translation filed
1992-09-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Effective date: 19920930 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19920930
1993-03-31	BERE	Be: lapsed	Owner name: MANNESMANN A.G. Effective date: 19920930
1993-06-26	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1993-06-26	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1993-07-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19930730
1993-08-18	26N	No opposition filed
1993-09-24	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2005-09-05	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050905
2008-07-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19920930

Publication	Publication Date	Title
DE69325107T2 (de)	1999-11-04	Vorrichtung zur strömungsregelung um vortexbildung zu vermeiden
DE2227501B2 (de)	1977-12-01	Gleitschieberverschluss fuer die ausgussoeffnung an giesspfannen
DE3013975C2 (fr)	1987-07-16
DE1951447C3 (de)	1974-01-31	Ausflußschieberverschluß für Gefäße zum Vergießen von Metallen
DE3512907A1 (de)	1986-10-16	Ausgusshuelse fuer einen metalschmelze enthaltenden behaelter
DE3423157C1 (de)	1985-06-20	Feuerfestes Plattenpaar fuer schwenk- bzw. drehbewegliche Schiebeverschluesse
DE69501204T2 (de)	1998-04-16	Dichtung für behälter
EP0307346B1 (fr)	1992-08-26	Anneau pour le dispositif de fermeture à obturation rotatif
DE3838903A1 (de)	1990-05-23	Dichtung fuer feuerfeste, metallische schmelze fuehrende bauteile
CH658512A5 (de)	1986-11-14	Auslaufvorrichtung fuer einen schmelzofen.
DE4231686A1 (de)	1993-05-27	Verschlussplatte fuer einen schiebeverschluss an einem metallschmelze enthaltenden behaelter
DE3500865C2 (de)	1987-01-22	Schiebeverschluß, insbesondere für Stahlschmelze enthaltende Gefäße
EP0446406A1 (fr)	1991-09-18	Obturateur coulissant pour un récipient métallurgique, en particulier une poche de coulée
DE2411800C3 (de)	1979-04-19	Drehverschluß für Gießpfannen
DE69929031T2 (de)	2006-08-17	Schieberventil mit verschweisster innenseite
DE69924360T2 (de)	2006-01-19	Schieber für eisenerz mit einem internen halter
DE3939170C2 (de)	1998-05-14	Verschlußklappe für einen Schachtofen
DE1948440C3 (de)	1983-12-22	Schleuse zum Einbringen von Schüttgütern in gasdicht abgeschlossene Räume, insbesondere von Legierungselementen in Stahlentgasungsgefäße
EP0396944A1 (fr)	1990-11-14	Appareil pour impulsion d'air avec une unité à soupape et un piston guidé à l'intérieur
DE3915980C1 (en)	1990-07-19	Shut-off slide housing - has removable lid, inlet and sealed outlet adjoined by slide plate and connected operating rod
DE1752656U (de)	1957-09-19	Schieberventil.
EP0429860A2 (fr)	1991-06-05	Dispositif de fermeture et/ou de réglage
DE2607686C3 (de)	1978-12-14	Ventilanordnung
LU84977A1 (de)	1983-12-28	Dichtungsanordnung an einem schiebeverschluss und verwendung zweier verschlusskoerper zur herstellung der dichtungsanordnung
DE3521006C1 (de)	1986-09-11	Gefriereinrichtung für ein Mikrotom