US3685706A - Rotary valve for metallurgical vessels and the like - Google Patents

Rotary valve for metallurgical vessels and the like Download PDF

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Publication number
US3685706A
US3685706A US13110A US3685706DA US3685706A US 3685706 A US3685706 A US 3685706A US 13110 A US13110 A US 13110A US 3685706D A US3685706D A US 3685706DA US 3685706 A US3685706 A US 3685706A
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US
United States
Prior art keywords
flow passages
rotation
lower member
container
combination according
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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 - Lifetime
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US13110A
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English (en)
Inventor
Hans Reinhard Fehling
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Didier Werke AG
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Didier Werke AG
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum
    • 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

  • a rotary-valve mechanism for controlling the discharge of molten material, from a container- (primarily molten metal such as steel from casting ladles etc.) which mechanism is fitted at the base of the container and comprises a stationary refractory upper plate and a rotatable refractory lower plate below it, with the upper surface of the lower plate in contact with the under surface of the upper plate, the two plates being pierced with flow passages which can be brought into and out of register by rotation of the lower plate.
  • a container- primarily molten metal such as steel from casting ladles etc.
  • the contact surfaces of the two plates are flat and lie in a plane normal to the axis of rotation, the lower plate is provided with an axial discharge orifice to which the flow passageslead, and the flow passages are so formed that the flow through them, in the fully open and in at least one partially position, is substantially symmetrical with regard to the axis of rotation; this latter requirement is met by the providie.
  • the invention relates to a flow regulating and closure device for metallurgical vessels and like vessels containing molten material (melt) at high temperature, particularly ladles and the like in the steel industry.
  • the present invention therefore provides a valve closure assembly for controlling the discharge of molten material from a container, comprising a stationary upper member and a rotatable member having an upper surface in contact with an under surface of the upper member, which members are pierced with flow passages which can be brought into and out of register by rotation of the lower member, characterized in that (a) said surfaces are flat and lie in a plane which is normal to the axis of rotation, (b) the lower member is provided with an axial discharge orifice, and (c) the flow passages are so constructed that the flow through them, in the fully open position and in a partially opened, or throttled, position or positions is substantially symmetrical with regard to the axis of rotation.
  • the upper member has symmetrically disposed flow passages
  • the lower member has symmetrically disposed recesses leading to an axial duct and to the discharge orifice.
  • FIGS. 1 and 2 are vertical sections through two embodiments of rotary valve according to the invention.
  • FIG. 3 is a plan view,'on a larger scale, of the two members with one arrangement of their flow passages;
  • FIGS. 4A and 4B show these members in partly open or throttled positions, while FIGS. 4C and 4D show them in the fully opened and closed positions respectively;
  • FIG. 5 is a plan view showing another arrangement of the flow passages, .and
  • FIG. 6' shows one form of the flow. passage in the lower member and of the discharge orifice.
  • the vessel e.g. a casting ladle
  • the vessel has a steel outer shell 1 with a refractory lining 2.
  • a refractory ring 3 into which a refractory ring 4, preferably of a more resistant refractory material and preferably replaceable from the exterior (from below), is mounted and secured against rotation.
  • the fixed plate 5 is tightly fitted to the ring 4 and is I so mounted that it is secured against rotation. It has symmetrically disposed windows 7 through which the melt canbe discharged.
  • the rotary plate 6 has symmetrically arranged cutouts 8 or recesses converging into an axial duct 9 through which the melt is discharged. It is preferable to provide an initially separate, but attached, nozzle 10, the length of which can be varied according tooperating requirements.
  • the rotary plate 6 and the nozzle 10 are firmly mounted in a rotary support dish or base 11 made, for example, of cast iron.
  • the dish 11 is held in position by bevelled wheels 12 (which are preferably three in number, symmetrically disposed, and of which only one is shown) mounted for rotation round vertical studs 12a fixed to the steel frame of the ladle.
  • bevelled wheels 12 which are preferably three in number, symmetrically disposed, and of which only one is shown mounted for rotation round vertical studs 12a fixed to the steel frame of the ladle.
  • the rotation of the dish may be effected by any suitable method. For small vessels where the friction force between the numbers 5 and 6 is small enough, this can be done by means of a lever. Another simple method is to effect the rotation by means of a steel cable 14 (FIG. 1) or by a ratchet and gear wheel. As will be appreciated from the description below, the rotary movement of the dish will never be much more than a quarter turn from the fully open to the fully closed positron.
  • the two members 5 and 6 are so designed and mounted that they can easily be replaced from outside while the ladle is hot.
  • the axis of the discharge duct 9 coincides with the axis of rotation so that there is no lateral movement of the steel jet during the opening, throttling or closing movements of the member 6.
  • the upper surface of the rotary member 6 is above the steel shell 1, i.e., as near to the bottom of the interior of the vessel as possible. This is desirable in cases (like small ladles) where there is danger of freezing of the metal above the level of this surface when the valve is closed.
  • the upper surface of member 6 is below the steel shell. In this case it may be found desirable to prevent freezing by mounting the rotary member 6 on an insulating block 15.
  • FIG. 2 also shows an elongated nozzle for reaching below the steel surface of another vessel like the tundish above a continuous casting plant.
  • FIG. 3 is a plan view showing the fixed member 5 with the flow passages 7 and also showing (dotted lines) the cut-outs 8 and the central duct 9 of the rotary member 6.
  • FIGS. 4A and 4B show diagrammatically two different partly closed or throttled positions, FIG. 4C the fully open position and FIG. 4D the closed position, of one of the cut-outs 8 in relation to one of the flow passages 7.
  • FIG. 5 An alternative arrangement of flow passages, cutouts, and duct is shown in FIG. 5. It will be seen that at each of two diametrically opposed locations the member 5 is provided with a plurality of circumferentially spaced flow passages 7a, 7b, and 7c of progressively increasing sizes, the outer margins of which passages are disposed on a circle which coincides with the outer margins of the cut-outs 8.
  • the member 6 may be turned from the fully closed position shown to three different positions in which the cut-outs 8 register with passages 7a, with passages 7b, and with passages 7c, to give, respectively, two different throttled flow positions and a fully opened position.
  • FIG. 6 shows alternative shapes for the cut-outs 8 and the duct 9.
  • c. has no, or substantially no, flow component inducing a rotary (vortex) movement of the melt in the discharge duct and the jet itself.
  • the fixed member 5 has to be mounted first. In order to fulfil the twin requirements of tight fit and horizontal alignment of its bottom surface, it is necessary to provide a sufficiently thick layer of highly refractory mortar between it and the bottom surface of ring 4. It is preferable to recess the ring into the top of member 5.
  • the bosses for the wheels may be fitted to a ball joint, or hinged, instead of being rigidly fixed to the steel shell of the ladle, as shown.
  • the refractory parts 5, 6 and 10 should be highly resistant to the erosive action of the melt.
  • the best material so far available is a refractory containing over A1 0
  • any other suitable symmetrical arrangement may be adopted. For example they may be placed at three locations which are equally spaced about the axis of rotation of plate 6.
  • a container for molten material having a stationary refractory ring and a valve closure assembly for controlling the discharge of molten material from the container, comprising a stationary refractory upper member and a rotatable refractory lower member having an upper surface in contact with an under surface of said upper member, said members are each pierced with at least two flow passages which can be brought into and out of register by rotation of said lower member, characterized in that (a) said surfaces are flat and lie in a plane which is normal to the axis of rotation of said members, (b) said lower member is provided with an axial discharge orifice, and (c) said flow passages are so constructed that the flow therethrough, in the fully opened and in a partially opened position is substantially symmetrical with regard to said axis of rotation.
  • the upper member has a plurality of symmetrically disposed flow passages and the lower member has a corresponding plurality of recesses, in its upper surface, leading to the axial discharge orifice for movement, by rotational movement of the lower member, into and out of register with the flow passages in the upper member.
  • A'combination according to claim 1 having a rotary base on which the lower member is mounted, and bearing means for rotatably supporting said base from the underside of the container.
US13110A 1969-02-22 1970-02-20 Rotary valve for metallurgical vessels and the like Expired - Lifetime US3685706A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB966269 1969-02-22

Publications (1)

Publication Number Publication Date
US3685706A true US3685706A (en) 1972-08-22

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ID=9876336

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Application Number Title Priority Date Filing Date
US13110A Expired - Lifetime US3685706A (en) 1969-02-22 1970-02-20 Rotary valve for metallurgical vessels and the like

Country Status (8)

Country Link
US (1) US3685706A (xx)
JP (1) JPS5013742B1 (xx)
AT (1) AT300228B (xx)
BE (1) BE746260A (xx)
FR (1) FR2031596A7 (xx)
GB (1) GB1297937A (xx)
LU (1) LU60383A1 (xx)
NL (2) NL162579C (xx)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938713A (en) * 1973-05-30 1976-02-17 Pielkenrood-Vinitex B.V. Flow regulator for sediment collecting chambers of a separating device
US4260081A (en) * 1978-08-07 1981-04-07 Pol Detalle Slide-valve output regulating throttle
EP0226766A1 (de) * 1985-12-21 1987-07-01 Didier-Werke Ag Platteneinheit für Scheiberverschlüsse
US4779287A (en) * 1984-03-31 1988-10-18 Fried. Krupp Gmbh Tiltable metallurgical furnace vessel
US4840295A (en) * 1987-10-01 1989-06-20 Foseco International Limited Rotary pouring nozzle for a vessel for holding molten metal
US5382003A (en) * 1992-12-08 1995-01-17 Sankaranarayanan; Ramani Flow control device for the suppression of vortices
GB2420737A (en) * 2004-12-03 2006-06-07 William Brian Turner Manufacturing a cylindrical brush
CN108031804A (zh) * 2018-01-23 2018-05-15 广西欧迪姆重工科技有限公司 一种回转连续生产合金的分流器及其设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH649610A5 (de) * 1980-09-24 1985-05-31 Stopinc Ag Verschlussplattenpaar fuer einen schiebeverschluss.
GB2249978B (en) * 1990-11-26 1994-08-24 Ishikawajima Harima Heavy Ind Tundish flow control
AU642049B2 (en) * 1990-11-26 1993-10-07 Ishikawajima-Harima Heavy Industries Company Limited Tundish flow control

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US873497A (en) * 1907-09-18 1907-12-10 Young Kie Buell Receptacle for powdered substances.
US1006450A (en) * 1909-08-23 1911-10-17 Central Brass & Stamping Co Nozzle.
US2055076A (en) * 1936-06-02 1936-09-22 Jordan W Grant Hose nozzle
US3374930A (en) * 1964-12-05 1968-03-26 Stoecker & Kunz Gmbh Discharge brick for casting ladles, intermediate containers and the like
US3386633A (en) * 1966-04-20 1968-06-04 Nadrich John Closure for a bottom pour metallurgical ladle
US3459346A (en) * 1966-10-18 1969-08-05 Metacon Ag Molten metal pouring spout

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US873497A (en) * 1907-09-18 1907-12-10 Young Kie Buell Receptacle for powdered substances.
US1006450A (en) * 1909-08-23 1911-10-17 Central Brass & Stamping Co Nozzle.
US2055076A (en) * 1936-06-02 1936-09-22 Jordan W Grant Hose nozzle
US3374930A (en) * 1964-12-05 1968-03-26 Stoecker & Kunz Gmbh Discharge brick for casting ladles, intermediate containers and the like
US3386633A (en) * 1966-04-20 1968-06-04 Nadrich John Closure for a bottom pour metallurgical ladle
US3459346A (en) * 1966-10-18 1969-08-05 Metacon Ag Molten metal pouring spout

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938713A (en) * 1973-05-30 1976-02-17 Pielkenrood-Vinitex B.V. Flow regulator for sediment collecting chambers of a separating device
US4260081A (en) * 1978-08-07 1981-04-07 Pol Detalle Slide-valve output regulating throttle
US4779287A (en) * 1984-03-31 1988-10-18 Fried. Krupp Gmbh Tiltable metallurgical furnace vessel
EP0226766A1 (de) * 1985-12-21 1987-07-01 Didier-Werke Ag Platteneinheit für Scheiberverschlüsse
US4840295A (en) * 1987-10-01 1989-06-20 Foseco International Limited Rotary pouring nozzle for a vessel for holding molten metal
US5382003A (en) * 1992-12-08 1995-01-17 Sankaranarayanan; Ramani Flow control device for the suppression of vortices
GB2420737A (en) * 2004-12-03 2006-06-07 William Brian Turner Manufacturing a cylindrical brush
CN108031804A (zh) * 2018-01-23 2018-05-15 广西欧迪姆重工科技有限公司 一种回转连续生产合金的分流器及其设备

Also Published As

Publication number Publication date
JPS5013742B1 (xx) 1975-05-22
NL162579C (nl) 1980-06-16
NL162579B (nl)
LU60383A1 (xx) 1970-04-22
NL7002543A (xx) 1970-08-25
FR2031596A7 (xx) 1970-11-20
AT300228B (de) 1972-07-25
GB1297937A (xx) 1972-11-29
BE746260A (fr) 1970-07-31
DE2006523A1 (de) 1971-01-21

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