JPS59225876A - Slide type sealing device for steel or metallurgical container - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an identification top plate formed of at least one refractory element, optionally retained in a metal frame, and comprising at least one casting orifice; The present invention relates to a sliding closure device for a steel or metallurgical container, consisting of a support frame made of at least one plate, removably mounted on a slide block so as to slide against it.

The sliding closure device according to the invention is mounted on a continuous casting distribution 4, in particular for the production of blooms or small slab blooms.

Continuous steel casting operations typically use containers and/or distributors that function to completely separate metal and slag and, in the case of multi-line casting equipment, to distribute the steel between different ingot molds. The speed is generally controlled by an automatically controlled sliding stopper.

However, conventional sliding closure devices cannot be cast for long periods of time because sensitive refractory elements must be replaced frequently.

Some trench systems have a mating connection between the dip tube and the sliding closure girder plate for replacing the dip tube. This type of method has the disadvantage of having an adverse effect on the tightness of the metal drain, resulting in damage to the metal parts.

In order to overcome the shortcomings mentioned above, it has been proposed to replace the immersion tube and the lower plate y all at once, but it is necessary to carry enough distributors for the replacement, so the work is interrupted. be done.

Furthermore, the conventional charging method has the disadvantage that if the work is completely stopped, gold particles will remain in the metal drain. Therefore, it is necessary to use sophisticated equipment to clean the national drain, separate the sliding closure from the cylinder, and/or remove the refractory lining of the closure.

The present invention relates to a device which avoids the drawbacks mentioned in item 1 above, and which makes it possible to make the closing device and the drain independent, and to replace the refractory elements independently in each line while maintaining the effective tight boss of the metal drain. This is what we are trying to do.

That is, the present invention includes a fixed top plate that includes at least one casting orifice and is formed of at least one refractory element held in a metal frame, and a fixed top plate that slides against the core top plate. The present invention relates to a sliding closing device 6 for a steel or metallurgical cylinder, consisting of a support frame consisting of at least one sliding plate removably mounted on a sliding block. A feature of the invention is that before installing the device on one side of the cylinder (c.), by making at least one upper plate element removably attached to the device removable; Even if the device is separated from the cylinder during work, the upper plate element can remain integral with the cylinder.

According to one feature of the present invention, the cover element does not show only a part of the sliding surface 1~ on each side plate.

In the 8th example of the present invention, the slippage of the earth-containing element 1
L'i, by means acting on the rear part of each plate element, it is held in contact with the base thread support formed in the support frame wall.

At the top of the top plate, there is provided a boss 6 which forms an inner nozzle through which the sheet bricks are inserted.

The boss is preferably curved and has an air supply section for injecting gas, particularly an inert gas, through the boss and into the metal drain.

In a preferred embodiment of the invention, the device consists of two sliding plates which, by translation in opposite directions, are guided under an alternating pressure below the casting surface orifice of the -1 plate.

For this purpose, the device consists of a cam extending symmetrically to the end face passing through the casting IIIIII#, and at least one spring symmetrically arranged with said end face acts on the cam and is attached to the dowel carriage. At least two levers are moved along the cam to press each of the plates against the upper plate, so that when any plate approaches the casting orifice, the pressure is increased and when the plate moves away from the orifice. By configuring the body to be depressurized at the same time, the plate can be easily retreated to the body-low position.

Below the movable lower plate of the casting axis, there is a jet protection tube which is fixedly held in a lateral position touching and surrounding the lower surface of the other movable plate by a support fork that protrudes into the ingot mold plate and moves up and down. A lower plate is provided.

Other features and details of the invention will become apparent from the following description and reference to the accompanying drawings. The drawing is provided by way of example and shows one implementation of the control device of the invention.

In the figures, the same reference numerals refer to the same elements.

As shown in Figures 1 to 3, a sliding closure 11 device according to the invention, generally designated 1, comprises a fixed F plate 3 mounted on a fixed assembly 4, and at least one The main frame 2 is made up of a slide block 5, which is fireproof and movable.

The "fixed"-handling 3 is made up of independent elements 8.9.10 of the fixed type, one of which is equipped with a boss serving as an inner nozzle 11, and is equipped with a boss serving as an inner nozzle 11.

It forms an inner nozzle-plate element assembly 12 housed in a laminar outer jacket 13 . The assembly 12 is arranged on a support frame 2'' and the closing device is held in place by a retractable blocking device 14, which can be retracted even in the upper IC position of the cylinder 15.゜During the preparation of the above-mentioned vertical installation (dimensions), the closing device 1 is brought close to the cylinder 15 in order to introduce the inner nozzle 11 into the sheet brick 16 installed inside the cylinder 15. This can be easily done by using sheet clay IF5.
The centering ring 18 attached to the bottom of the cylinder ensures reliable positioning. The closure device is operated by each powered or pumped heavy equipment truck and is screwed with four eye bolts 19 or the like to a leg 20 soldered to the cylinder 15.

Conventionally, the sliding member 21 of the upper plate 3 had to be large in size in order to provide a suitable support for the movable plate 6.7.

Since it is difficult to form this slide in the form of a single block assembly, it is better to carefully assemble several elements 8.9.10 and only replace worn elements.

In order to ensure alignment of the sliding surfaces of these elements, machine 142 is machined 21 H, ffV, 8.9, instead of the conventional upper plate element 8.9.10.
and 10 edge surface positioning bases.

Since the Tsukuda support member 23 is formed in the horizontal direction near the sliding surface, the ff1t fire element 5-support member 23 is
Support it and hit the rear of the upper plate element~8.9.10.
It can be fixed to the support member using a good cutting device (] ¥1 not shown).

The sliding closure device 1 is equipped with a retractable device arm 14 that encloses the metal drain, which means that after the slide nozzle is closed, the metal drain is closed. It's full of steel. - This means that the closing device and cylinder 15 can be completely separated even after the inner nozzle 11 is soldered to the cylinder 15 in the station.

Since this device is installed according to the requirements shown in the figure, it can be loaded into and removed from the cylinder 15 immediately before and after casting.

The fastening device 24 presses the carriage or slide block 5 that holds the movable plate 6.7 against the fixed upper plate 3 (12), thereby bringing the movable plate 6.7 into close contact within the casting zone. In this fastening device 24, each movable plate 6.7 is supported by an independent fork 25 which is hinged so that it can move in each direction, so that it can completely contact the sliding portion of the fixed upper plate 3. Accordingly, the pressure applied to the identification upper plate 3 can be transmitted by the lever 26.

The above-mentioned pressure is transmitted to the lever 26 by the tightening device 24 (shown in FIGS. 2 and 4), which is composed of a rocking rod 27 that actually swings horizontally. two axles 27' and a box 28' which fit into the longitudinal orifice 28 so as to be able to vibrate and slide in a substantially vertical plane through the air gap;
and is pushed back by at least one spring 29 acting near its center point. In the above-mentioned fastening device, 1 that moves simultaneously along the rocking rod 27
As the rocking rod 27 approaches the base 30' of the Tituba 300 or the point or zone of action of the spring 290, the rocking rod 27
The pressure applied to 0 increases.

The carriage 5 carries both plates 6.7 (if the carriage 5 carries both plates 6, 7, the carriage is moved along the rocking rod), and at the same time the worn plate 6, which is attached to the casting sawn, is removed and the new plate 6.7 is removed. Board 7
can be positioned and gradually tightened toward the metal drain 31.

Since the residual pressure is small, the wear plate 6 can be easily removed and replaced in the standby zone.

With this device, a movable plate 6.7 for specific purposes such as an auxiliary IE orifice for starting one line of thread casting;
, and (d) the closing plate 7 can be positioned.

In a particular embodiment, the carriage 5 is moved linearly by means of a threaded nut rod.

The threaded rod 32 is held in rotation by an electric motor 33 equipped with a reduction gear 34 . It is advantageous to provide two speeds, a low speed to allow accurate rolling of the liquid gold A jet and another speed to allow rapid exchange of the roots.

, a drive nut 35 is held on one side of the carriage 5 or on the U-shaped part that acts on the carriage 5 to move it, and the spare enemy is The plate 6 is pressed during operation. With this configuration, it is possible to prevent the infiltration of particles, especially when the plate cutting passes in front of the orifice 31.

The ridge, screw bulge 32, is preferably surrounded by a conical extension device forming a protective jacket 32' around its circumference.

Further, in the direction F of the movable plate 6 in the operating position of the one-line extension on the side of the opening/closing device 1-metal drain 30, there is a support fork 38 that rotates vertically j1n around the 1-lower point of the lever 38'.
A cast piece integrally formed with the lower plate 37, which is held by a footrest.
I'm giving up on R36.

Support fork 38 attached: Because it is held in a high position by four springs 39 attached with bolts 40, the lower plate 3
7 can be fixed to the lower surface of the movable plate 6.

(15) In order to make it possible to pull out the lower plate by hand, which may be integral with the cast/g36, the action of the spring 39 is canceled out by a jack 41. During the casting operation, the movable closing plate 7 is introduced by sliding it along the identification upper plate 3 and the fixed lower plate 37 on the opposite side of the casting orifice 30 when a failure is found in the immersion/1q36. Fork 38 supporting casting tube 36 with air jack 41 acting against spring 39
By lowering the fork 42 and manually operating the fork 42, the cast tube can be removed 7 and replaced with a new one. fork 42
fd is preferably hinged so that the cylinder 15
Or the lower plate and cast pipe can be easily removed without having to hold the distributor. This method allows the various casting lines to be completely independent.

In FIGS. 2 and 4, each jack 41 is formed of a metal bellow or the like with both ends sealed with metal clamps 43.

One of the clamps is provided with compressed gas supply means 44 which enable the jack to be operated pneumatically (16).

The inner nozzle 11 is made of a breathable material and includes a gas supply means formed on the upper plate 3 so as to inject gas, particularly inert gas, into the metal drain 31 through the porous boss 11 of the upper plate 3. ing.

A sliding closure device according to the invention may use a block assembly consisting of a lower plate and a cast tube incorporated into the lower plate. This means that a failed assembly can be replaced with a new one without having to interrupt the casting operation or wait for the distributor.

Unlike conventional cast tubes, which can be removed without lifting the separate, temporarily joined distributor, the monoblock assembly of 1 has the advantage of having no joints. Therefore, since the device of the present invention only requires two plates to be bonded together, the cast joint can be effectively protected. These tabular bonds generally have excellent tightness and can be easily rendered inert.

Although the features of the present invention have been described in Section 1, the present invention is not limited to the above-mentioned embodiments. , various modifications can be made.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a sliding closure device mounted on a container along the axis of a casting orifice. Figure 2 shows the new side of the building shown in Figure 1. FIG. 3 is a plan view of the apparatus shown in FIGS. 1 and 2. and Fig. 4 shows the longitudinal axis of the rocking device, the axis along the gland, Fig.
FIG. 4 is a vertical top view of the apparatus shown in FIG. 3; <Explanation of symbols of main parts> 1...Sliding closure device, 2...Support frame, 3...
・Fixed upper root, 5... Reciprocating table (slide block), 6
．． 7... Movable plate, 8.9.10... Upper plate element, 24
... Fastening device, 36... Casting pipe, 37... Lower plate,
38...Support fork, 26...Lever, 41...
・Jyatsuki. 110)

Claims (1)

[Claims] 1. A supporting frame, a fixed top plate comprising at least one casting orifice and optionally retained on the metal frame and consisting of at least one refractory element; A sliding closure device for steel or metallurgical containers, comprising at least one sliding plate removably mounted on a sliding block so as to slide on said top plate, said device comprising: a sliding closure device for steel or metallurgical containers; By making it possible to remove at least one element of the two removably mounted plates prior to installation below, the device can be removed when casting is interrupted and the device is moved to a remote location in the container. A slide type closing device characterized in that the end of the upper plate separated from the container can maintain an integral state with the container.2. It is characterized in that each element of the above-mentioned upper cover shows only a part of the sliding state with respect to each sliding plate. 3. The device 6 according to claim 1, wherein the sliding plate , the sliding surface of the plate element is [
It is characterized in that it is held in contact with a reference support formed on the wall of the support frame by a means that acts on the cutout of the Niya element. 4. The device according to claim 3, which comprises the device 1. - the riJ detaching element is adjacent to at least one other element peak of the upper plate, at least a part of the sliding surface being fixed to the support portion located at the sliding 1■ of the removable element; It is characterized by the presence of 5.7N The device according to claim 4, wherein the first stripping element comprises at least one sheet of the I-treated material fixed to a support portion joined to the support portion thereof. 6. The device according to claim 1, characterized in that the device is in contact with another element, wherein a sheet brick of a container is inserted through two sides of the upper root of the device. It is characterized by being provided with a boss forming an inner nozzle. 74 The device according to claim 6, comprising:
The boss of the single plate is breathable and includes a gas supply member for injecting gas, particularly inert gas, into the metal drain. 8. In claim 1, g[2]
characterized in that it consists of a series of sliding plates configured to be alternately introduced below the casting orifice of said upper plate by translation in one direction and retractable by translation in the opposite direction. 9. The device according to claim 8, wherein the device can be alternately introduced below the casting orifice of the upper plate by translation in one direction and retracted by translation in the opposite direction. 10. The device according to claim 9, comprising two sliding plates configured as follows.
Furthermore, the end surface of the casting IIqlI gland +f is 4
/IE consists of a cam, Pii acting on said cam (d, at least one spring ff installed symmetrically with said end face, and mounted on a carriage /ζ at least two 1
When the collar slides along the cam 1~, the valley sliding plate-
By pressing against the sliding plate IM of the upper plate, the pressure is increased as the sliding plate approaches the casting orifice, and the pressure is reduced as it moves away from the casting orifice. It is characterized by being able to retreat. 11. The device according to claim 1, further comprising: below one of the sliding plates on the casting axis;
As it plunges into the ingot mold plate, it is characterized by consisting of a plate integral with a jet protection tube held in a fixed position abutting the -F surface of the other sliding plate by means of a moving support fork. . 12. The device according to claim 11,
At least one partially compressed spring is applied to the lever, the supporting fork is held, and at least one jack is pressed against the lever, so that the container is not raised. A zero sign is that the lower plate with the cast tube can be removed by hand. ]3. The device according to claim 12,
Each jack is characterized in that it consists of a pneumatically actuated metal hook sealed at both ends with metal clamps.