# US 8,539,977 B2 · Slide valve apparatus for automatic application of surface pressure and surface pressure application method thereof

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- Number: US 8,539,977 B2
- Document ID: US8539977B2
- Status: Granted
- Kind: B2
- Application number: 13/496,352
- Filed: 2010-12-01
- Published: 2012-07-12
- Granted: 2013-09-24
- Earliest claimed: 2009-12-25
- Assignees: Shinagawa Refractories Co., Ltd.
- Applicants: Kenji Yamamoto; Mototsugu Osada; Atsushi Takata
- Inventors: Kenji Yamamoto; Mototsugu Osada; Atsushi Takata
- Web page: https://patentgrep.com/patent/US8539977B2

## CPC

- B22D 41/34: Supporting, fixing or centering means therefor
- B22D 41/40: Means for pressing the plates together
- Y10T 137/8225: Position or extent of motion indicator
- B22D: CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (shaping of plastics or substances in a plastic state B29C; metallurgical processing, selection of substances to be added to metal C21, C22)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

In order to simplify work of applying and releasing a surface pressure in a slide valve device constructed of a fixed plate, a slide plate, a seal plate, and the like, provided is a slide valve device for automatic surface pressure application and a surface pressure application method therefor, the slide valve device including: a base frame (2) including a positioning member (51) for determining an arrangement location (X) of a seal case (21) and a stopper (52) for fixing the seal case (21) at the arrangement location (X); and a slide case (4) including a pusher (53) for sliding the seal case (21) together with the slide case (4) when sliding the slide case (4) in a surface pressure application direction.

## Claims

### Claim 1

A surface pressure application method for a slide valve device for automatic surface pressure device,
the slide valve device for automatic surface pressure application including:
a fixed plate (3) fixed inside a base frame (2) that is mounted onto a bottom lower surface (la) of a molten metal vessel (1);
a slide case (4) including a slide plate (5), the slide case (4) being provided below the fixed plate (3) so as to be slidable by an actuator (7);
a seal case (21) provided below the slide case (4), the seal case (21) including a seal plate (6) or including a seal plate (6) and a shooting nozzle (21a); and
a movable member (14) provided to each side portion of the seal case (21) so as to be movable on a support surface (13) situated at each side portion of the base frame (2),
the slide case (4) and the seal case (21) being slidable by the actuator (7) so that a surface pressure is appliable and releasable,
the base frame (2) of the slide valve device for automatic surface pressure application including:
a positioning member (51) for determining an arrangement location (X) of the seal case (21); and
a stopper (52) for fixing the seal case (21) at the arrangement location (X),
the slide case (4) or a guide piece of the slide valve device for automatic surface pressure application including a pusher (53) for pushing the seal case (21),
the surface pressure application method comprising:
sliding the slide case (4) in a surface pressure application direction to move the seal case (21) to the arrangement location (X) together with the slide case (4) through the intermediation of the pusher (53); and
fitting the stopper (52) to the seal case (21) that has been moved to the arrangement location (X) to fix the seal case (21) at the arrangement location (X).

### Claim 2

A slide valve device for automatic surface pressure device, comprising:
a fixed plate (3) fixed inside a base frame (2) that is mounted onto a bottom lower surface (la) of a molten metal vessel (1);
a slide case (4) including a slide plate (5), the slide case (4) being provided below the fixed plate (3) so as to be slidable by an actuator (7);
a seal case (21) provided below the slide case (4), the seal case (21) including a seal plate (6) or including a seal plate (6) and a shooting nozzle (21a); and
a movable member (14) provided to each side portion of the seal case (21) so as to be movable on a support surface (13) situated at each side portion of the base frame (2),
the slide case (4) and the seal case (21) being slidable by the actuator (7) so that a surface pressure is appliable and releasable,
wherein the base frame (2) comprises:
a positioning member (51) for determining an arrangement location (X) of the seal case (21); and
a stopper (52) for fixing the seal case (21) at the arrangement location (X), and
wherein the slide case (4) or a guide piece comprises a pusher (53) for sliding the seal case (21) together with the slide case (4) when sliding the slide case (4) in a surface pressure application direction.

### Claim 3 (depends on 2)

A slide valve device for automatic surface pressure device according to claim 2, wherein the positioning member (51) and the stopper (52) are arranged so as to sandwich the seal case (21) with respect to a sliding direction of the slide case (4).

### Claim 4 (depends on 3)

A slide valve device for automatic surface pressure device according to claim 3, wherein a contact portion (51a) of the positioning member (51) with respect to the seal case (21) forms a pressing portion having elasticity.

### Claim 5 (depends on 2)

A slide valve device for automatic surface pressure device according to claim 2, wherein a contact portion (51a) of the positioning member (51) with respect to the seal case (21) forms a pressing portion having elasticity.