DE10213041C1 - Sliding closure system for a casting ladle has an emergency closure device with an operating element and a shearing element arranged below the steel casing of the base of the ladle - Google Patents

Abstract

Sliding closure system comprises a sliding plate (10) which slides against a head plate connected to a drain (11) which can be pressed into a refractory molding mass in the base (1) of a metallurgical vessel. An emergency closure device having an operating element (20) and a shearing element (16) is arranged below the steel casing of the base.

Description

The invention relates to a slide closure system for a metallurgical casting vessel, ins in particular a ladle, according to the preamble of claim 1.

Slide lock systems have long been known in the steel industry and alongside that plug closure used in common practice (DE 26 27 896 A1, DE 40 06 064 A1, DE 40 07 993 A1, DE 94 19 040 U1).

This known closure system is characterized by a slide plate, the ge against a head plate arranged above and connected to a pouring stone is. The pouring stone is usually in a fire located in the bottom of the casting vessel detected molding compound can be pressed in.

This slide lock system, which has proven itself per se, can be made from different Ursa Occasionally, the closure member no longer closes during pouring or leaks can occur, so that the melt flows out in an uncontrolled manner can eat and this can result in considerable consequential damage.

To solve this problem, it has already been proposed to cross the axis of the Pouring opening adjustable, supporting at least one pouring tube arm to provide a closing element with a closing surface. By adjusting the Support arm can push the closing element sealingly under the pouring opening (DE 40 32 787 A1).  

On closer inspection of this proposal, it becomes clear that this is in terms of function corresponds to a conventional slide closure. In the event that the transverse displacement of the Support arm is not possible, no solution is offered, so the solution is actually no real emergency lock is.

The object of the invention is to provide a slide closure system for a metallurgical casting vessel, in particular a ladle, with which even if the displacement fails the slide plate and / or in the event of leaks, a secure closure of the pouring spout guaranteed.

This task is based on the generic term in conjunction with the characteristic Features of claim 1 solved. Advantageous further developments are the subject matter of subclaims.

According to the teaching of the invention, one is below the steel shell of the floor Actuating element and a shearing element having emergency closure device assigns. The actuating element is preferably a hydraulic cylinder and the shearer ment a knife beveled at the tip.

With this proposed arrangement, it is possible in the event of failure of the slider close to activate the hydraulic cylinder and the pouring stone with the knife in shear off this area, the knife then itself forming a closing plate.

The advantage is that regardless of the type of failure, i.e. H. whether that Slider plate jams and / or leaks occur in the pouring area, an emergency ver conclusion is possible.

Further features, advantages and details of the invention result from the following ing description of an embodiment shown in a drawing. It demonstrate:  

Fig. 1 in cross section the bottom region of a metallurgical casting vessel with slide closure system designed in accordance with the invention in the basic position

Fig. 2 as Fig. 1 but in the extended state

Fig. 1 shows in cross section the bottom area of a metal vessel that is otherwise not shown in detail. Shown is the steel jacket thickened in the area of the bottom 1 compared to the steel jacket thinner in the wall thickness in the subsequent cylindrical loading area 2 . The steel casing lying in the area of the base 1 is usually a dome part. The inside of the bottom 1 or cylindrical region 2 is provided with a refractory lining 3 .

In order to arrange a pouring opening, a recess is provided in the bottom 1 of the steel jacket, into which a thickened disk 4 with a circular opening is welded. Inserted into this opening is a refractory molding compound 5 with two opposing tapered bore sections 6 , 7 . In the bottom bore section 7 is a accordingly conical pouring stone 8 can be pressed. This pouring stone 8 is connected to a head plate 9 . A slide plate 10 is arranged parallel underneath and is connected to a pouring stone 11 pointing downwards. The slide plate 10 can be moved transversely to the pouring axis 13 by means of an actuating device, not shown here, via a slide rod 12 , so that the pouring channel 14 can thus be closed.

According to the invention, an emergency closure device, which is only indicated here, is arranged on the underside of the thickened pane 4 . It consists of a here sketchy Darge presented actuator 20 , z. B. hydraulic cylinder, which cooperates with a shear element 16 via a linkage 15 . The shear element 16 is guided in a base plate 17 which is connected by screws to the thickened washer 4 on the one hand and via a connecting plate 18 on the other hand to a frame element 19 of the slide closure. The housing of the actuating device 20 is connected to the curved region of the base 1 via a web 21 .

In Fig. 1, the closure device is shown in the basic position. Fig. 2 shows the emergency lock device in the same section but in the extended state. By activating the actuating device 20 , the shearing element 16 is displaced transversely in the direction of the pouring spout, part of the pouring stone 8 being sheared off by the bevel. In this position, the top of the shear element 16 forms a closure for the pouring spout 14 .

LIST OF REFERENCE NUMBERS

1

ground

2

cylindrical areas

3

Refractory lining

4

disc

5

molding compound

6

.

7

tapered bore sections

8th

staghorn

9

headstock

10

slide plate

11

staghorn

12

slide rod

13

nozzle axis

14

Ausgusskanal

15

linkage

16

shearing

17

baseplate

18

connecting plate

19

frame element

20

actuator

21

web

Claims (5)

1. Slider closure system for a metallurgical casting vessel, in particular a ladle, with a sliding plate which can be displaced against a head plate arranged above it and connected with a pouring stone and the pouring stone can be pressed into a refractory molding compound arranged in the bottom of the vessel, characterized in that underneath the steel one Sheath of the bottom ( 1 ) is an actuating element ( 20 ) and a shear element ( 16 ) having emergency closure device is angeord net. 2. Slider closure system according to claim 1, characterized in that the actuating element ( 20 ) is a hydraulic cylinder. 3. Slider closure system claim 1 and 2, characterized in that the shear element ( 16 ) is a beveled knife at the tip. 4. Slider closure system according to one of claims 1-3, characterized in that the sliding direction of the knife ( 16 ) is parallel to the sliding direction of the slide plate ( 10 ). 5. slide closure system according to claim 4, characterized in that the sliding direction of the knife ( 16 ) and slide plate ( 10 ) are opposite.