Sliding closure for a metallurgical vessel

Patent metadata

Field	Value
Publication number	US-11969785-B2
Application number	US-202017758266-A
Country	US
Kind code	B2
Filing date	Dec 11, 2020
Priority date	Jan 15, 2020
Publication date	Apr 30, 2024
Grant date	Apr 30, 2024

Abstract

The invention relates to a sliding closure ( 10 ) for a metallurgical vessel comprising a tapping hole ( 1 ) for draining metal melt or slag, said sliding closure being provided with a slider housing ( 3 ) that can be secured to the vessel ( 2 ) and a closure plate ( 6 ) that can move therein for opening and closing the tapping hole ( 1 ). The sliding closure ( 10 ) also has only this moveable closure plate ( 6 ), without a stationary closure plate, which is can be moved directly on a sliding surface ( 7 ), extending around the tapping hole, preferably of a casing block ( 9 ) in the vessel ( 2 ) and can be pressed by pretensioning elements. In this way, this sliding closure ( 10 ) provides a constructionally simpler structure and user-friendly handling.

First claim

The invention claimed is:

1. Sliding closure for a metallurgical vessel with a tapping hole for casting metal melts or slags, comprising:
a slider housing configured to be fastened to the vessel; and
a movable closure plate configured to move, in the slider housing for opening and closing the tapping hole,
the sliding closure comprising exclusively the movable closure plate without a fixed-location closure plate,
wherein the movable closure plate is pressed directly onto a sliding surface extending around the tapping hole of a casing block in the vessel and is pressed thereby by tensioning elements.

2. Sliding closure according to claim 1 , further comprising a slide trolley movably guided in a carrier frame of the slider housing with the movable closure plate, which, on movement outside an effective working area of the movable closure plate, is released from tensioning, and pivoted out of and into the carrier frame by means of a pivot device.

3. Sliding closure according to claim 2 , further comprising slide elements arranged laterally in the slide trolley and that run along on guides of the carrier frame of the slider housing, put under loading by the tensioning elements,
wherein the guides are formed, outside the effective working area of the movable closure plate as ramps, an inclination angle of the ramps being dimensioned such that the guides are lowered there by an amount in height which is relaxed by the tensioning elements.

4. Sliding closure according to claim 3 , wherein one roller pair of the slide trolley, formed as slide elements, is received at an end of the ramp in each case in a corresponding cut-out opening of a pivot part of the pivot device in the carrier frame, while another roller pair, formed as slide elements, is pivoted outwards through an intermediate space remaining free between the guides.

5. Sliding closure according to claim 4 , wherein the pivot parts of the pivot device are rotatable into two positions, wherein, in one position, the pivot parts each form a raising delimitation stop on an end side at one set of guides in order that the slide trolley cannot be released from a tensioning force when in an operational state, while, in the other position, the roller pair of the slide trolley, formed as slide elements, is receivable in the cut-out openings for pivoting of the slide trolley outwards and inwards respectively.

6. Sliding closure according to claim 1 , wherein the sliding plate is provided with a replaceable insert made of metal, graphite, or refractory material.

7. Sliding closure according to claim 1 , wherein the sliding surface for the movable closure plate is formed by a casing block, integrated in a housing cladding and formed from copper or refractory material.

8. Sliding closure according to claim 1 , wherein the tapping hole, the slide plate, and a projecting casting or draining sleeve are aligned in relation to a sliding device of the movable closure plate as perpendicular or at an angle of 60°.

9. Sliding closure according to claim 1 , wherein the tensioning elements are formed in each case by two carrier frames arranged symmetrically and on a parallel axis at the slider housing and are associated with it, which have an effect of tensioning each carrier frame against the slide trolley.

Assignees

• Refractory Intellectual Property Gmbh & Co Kg

Inventors

• Vukovic Goran
• Christen Rene
• Ackermann Kurt

Classifications

• B22D41/24 Primary

  characterised by a rectilinearly movable plate (B22D41/38 - B22D41/42 take precedence) · CPC title

• C21C5/4653

  Tapholes; Opening or plugging thereof · CPC title

• F27D3/1536

  Devices for plugging tap holes, e.g. plugs stoppers · CPC title

• F27D3/1509 Primary

  Tapping equipment · CPC title