DE202015103079U1 - Slider closure for a metallurgical container - Google Patents

Abstract

Includes slide valve closure (1) for a metallurgical container
a slider frame (20),
a slider housing (10), wherein the slider frame (20) is slidably disposed in the slider housing (10),
a head plate (30) connectable to the metallurgical vessel via a mounting plate (75) integral with the metallurgical vessel;
a sealing plate for sealing the side facing away from the metallurgical container (12) of the valve body (10),
and a slide plate (40) having a spout (45) for discharging the metal and / or the metal alloy from the metallurgical container,
wherein the slide plate (40) is inserted into the slide frame (20), wherein the slide plate (40) with spout (45) together with the sealing plate (50) relative to the head plate (30) is slidably disposed,
and where
the sealing plate (50) by means of one or more spring elements (60, 60 ') to the side facing away from the metallurgical container (12) of the slide housing (10) is pressed.

Description

The invention relates to a slide closure for a metallurgical container according to protection claim 1.

In some known slide closures for metallurgical containers, eg. B. in the slide closure of the DE 40 07 993 A1 A shielding gas is used to prevent metal derived from the container from reacting with the oxygen of the atmosphere.

Such previously known slide fasteners are technically complex. Gas, which is passed into the previously known slide closures, protects only certain areas of the slide valve closure and not the entire interior of the slide valve closure. In addition, the gas escapes in previously known slide fasteners quickly or easily from the interior of previously known slide fasteners. This is especially true in the area around the spout and the connected dip tube around.

Also, with prolonged use and frequent opening or closing of the discharge opening of the metal or the metal alloy from a metallurgical container, the previously known slide seals are leaking, d. H. Air enters the slide gate or parts of the gate valve at unanticipated locations.

The object of the present invention is to provide a slide closure which is technically simple and retains its functionality over a long service life and avoids the above-mentioned disadvantages of known slide fasteners.

This object is achieved by a slide closure according to protection claim 1.

In particular, the object is achieved by a slide closure for a metallurgical container, comprising a slide frame, a slide housing, wherein the slide frame is slidably disposed in the slide housing, a head plate which is connectable to the metallurgical container via a mounting plate fixedly connected to the metallurgical container, a sealing plate for sealing the side of the slide housing facing away from the metallurgical vessel, and a slide plate having a spout for discharging the metal and / or the metal alloy from the metallurgical vessel, wherein the slide plate is inserted into the slide frame, wherein the slide plate with spout together with the sealing plate is arranged displaceably relative to the top plate, and wherein the sealing plate is pressed by means of one or more spring elements on the side facing away from the metallurgical container of the slide housing.

An advantage of this is that the slide closure is technically simple. In addition, changes in the slider frame, in particular changes in the distance of the lower end (i.e., the side facing away from the metallurgical container) of the slide frame from the metallurgical container, or from seals can be compensated by the spring force exerted by the spring elements. When changes occur, for. As abrasion of the valve body or the sealing plate by frequent displacements, the sealing plate is moved by the spring elements closer to the slider frame, so that the tightness of the sliding housing and the tightness of the connection between the sealing plate and valve body is still guaranteed. The same applies with regard to changes of possibly existing seals. By different design of the spring elements or variation of the biasing force of the spring elements, the (pressing) force with which the sealing plate is pressed or pressed against the lower side of the valve body, can be adjusted or varied. The solid connection between the mounting plate and metallurgical container can in particular z. B. be made by screws and / or bolts.

In a first embodiment, the sealing plate is connected substantially gas-tight with the side facing away from the metallurgical container of the slide housing. The advantage of this is that a Schutzgasatmospähre can be formed in the slide valve closure and no atmospheric air enters unintentional locations in the slide valve closure or the slide housing. As a result, the oxidation of the pouring stream, d. H. prevents the metal leaked from the metallurgical container while it passes the slide closure. In addition, the gas emerging around the spout protects the pouring stream or the metal discharged from the metallurgical container even after leaving the spout.

The one or more spring elements may each comprise a screw, a mother movable relative to the slider housing, and a spring. An advantage of this is that the spring element is technically simple. In addition, the spring element can be repaired technically simple and fast, since only the no longer functioning component (screw, nut or spring) must be replaced. This reduces the repair costs.

In a further embodiment, the nut is movable in a spring housing arranged. One advantage of this is that the spring element is technically particularly simple.

The screw can in each case be tightened to the stop so that the head of the screw is substantially flush with the side of the sealing plate facing away from the metallurgical container. An advantage of this is that the screw is particularly well protected against mechanical effects.

In a further embodiment, the screw is in each case guided in a sleeve in such a way that the length of the sleeve determines the minimum distance between the nut and the side of the slide frame facing away from the metallurgical container. By the length of the sleeve, the bias can be set, with which the sealing plate is pressed or tightened on the slide housing. The shorter the sleeve, the stronger the nut is pressed against the spring by the tightening of the screw, since the sleeve serves as an end stop for the nut, and consequently the preload increases, ie. H. the (pressure) force with which the sealing plate is pressed against the underside of the slide housing or is tightened. The source of error human is thus almost impossible or greatly reduced because the screw is always or always tightened to the stop or must be tightened.

The sealing plate can be firmly connected by means of the spring element or the spring elements with the slider frame. As a result, the sealing plate can be technically easily attached to the slider frame. As a result, the sealing plate is displaceable together with the slide frame.

In a further embodiment, the slide closure, in particular the slide frame, is designed so that even with a displacement of the slide frame together with the sealing plate relative to the sliding housing, in particular by means of seals, substantially gas-tight so sealed that a protective gas, in particular a noble gas, in an upper Area can be flowed into the valve body in such a way that it then flows along at least partial areas of the spout, and the protective gas leaves the slide valve closure at a lower end of the spout. The advantage of this is that technically easy a shielding gas can bring into the slide valve closure or the slide housing and the protective gas safely protects the emerging from the metallurgical container metal or the exiting metal alloy before contact and consequently reaction with the atmospheric air. In addition, this can be technically simple design of the slide closure. In particular, it is advantageous that only one noble gas connection or supply connection is necessary.

In a further embodiment, when moving the slide frame together with the sealing plate for closing an opening of the metallurgical container exactly two plates, in particular only the slide plate and the sealing plate, moved. An advantage of this is that the number of elements to be moved for closing an opening of the metallurgical container is low. This increases the life of the slide valve closure. In addition, the operating costs and the manufacturing costs of the slide valve closure are reduced.

The sealing plate is connected to a respective protective plate above this edge, so that the protective plate is displaceable together with the sealing plate as a plate unit. As a result, the sealing plate can be technically easily protected against thermal and / or mechanical effects. This extends the life of the slide valve closure.

Preferred embodiments will be apparent from the dependent claims. The invention will be explained in more detail with reference to drawings of exemplary embodiments. Show here

1 a perspective view of a slider closure of a first embodiment of the invention, wherein one side of the slide closure is opened;

2 a bottom view of the slide closure 1 with the pusher shutter closed;

3 a longitudinal sectional view of the slide closure 1 respectively. 2 ;

4 another cross-sectional view of the slide closure 3 ;

5 a detailed view of the area V of the slide valve closure 4 ;

6 a side view of the slide closure of the 3 - 5 ; and

7 another cross-sectional view of the slide closure of the 3 - 6 ,

In the following description, the same reference numerals are used for the same and the same parts acting.

1 shows a perspective view of a slider closure 1 a first embodiment of the invention, wherein the upper side of the slider closure 1 (which faces the metallurgical vessel; 1 the left side) is open. 2 shows a bottom view of the slide closure 1 out 1 , wherein the slider closure 1 closed is.

3 shows a longitudinal sectional view of the slide closure 1 out 1 respectively. 2 , The slider lock 1 is connectable to a metallurgical container and fixedly mounted on the container. The container comprises molten metal or a molten metal alloy, for. As liquid steel. The slider lock 1 serves to close an opening of the metallurgical container and open again to allow metal or metal alloy to flow out of the container in a controlled manner.

The slider lock 1 has a mounting plate 75 on top of the top cover of a slider housing 10 forms. The mounting plate 75 used for contacting and (solid or rigid) connection with the container. The slider lock 1 has a head plate 30 on, the rigid with the mounting plate 75 connected is. For this purpose, the top plate 30 inserted and held between so-called stoppers. The mounting plate 75 is firmly connected to the metallurgical container or connected to this. The headstock 30 and the mounting plate 75 have a flow opening 76 through which liquid metal can flow out of the container.

The mounting plate 75 has a passage opening 32 on, which is aligned with an opening of the container (not shown), so that metal from the container through the passage opening 32 and thus through the top plate 30 can flow. In the passage opening 32 can be arranged a refractory inner sleeve.

In the slide housing 10 is a slider frame 20 slidably arranged. The slider frame 20 is in 3 to the left opposite the valve body 10 displaceable. The displacement of the slider frame 20 takes place parallel to the bottom of the container and parallel to the mounting plate 75 ,

The slider frame 20 includes a slide plate 40 with a spout 45 , The spout 45 extends from the slide plate 40 down, ie from the mounting plate 75 path. The spout 45 tapers downwards. The spout 45 However, it can also have a shape. In particular, the spout can 45 a non-tapered shape, e.g. B. cuboid. The spout 45 and the slide plate 40 are integrally formed. The spout 45 and the slide plate 40 However, they can also be designed as separate elements or present (so-called change spout). In the slide plate 40 and the spout 45 is a spout opening 46 formed by the metal from the container through the slide plate 40 and the spout 45 can flow.

In the in 3 shown position is the slide frame 20 in the basic position. In the basic position is the spout opening 46 coaxial with the flow opening 76 aligned. In this basic position, metal can escape from the container, through the flow opening 76 the mounting plate 75 (or through one in the flow opening 76 arranged inner sleeve) and through the spout opening 46 the spout 45 or the slide plate 40 flow.

The terms "bottom" and "top" refer to those in 3 shown alignment of the slide closure 1 , In the state of use, the gravitation goes from "above" to "below".

On the lower side of the sliding housing 10 (ie the page 12 which in the state of use / in the state fastened to the metallurgical container to the container side) is a sealing plate 50 arranged. The sealing plate 50 extends substantially parallel to the mounting plate 75 and perpendicular to the passage opening 32 or pouring opening 46 , The sealing plate 50 seals the bottom side 12 of the valve body 10 (essentially gas-tight). The sealing plate 50 is with the slider frame 20 or the lower side 21 of the slider frame 20 connectable or connected.

Substantially gas-tight means that at the points of the slide closure not provided (ie sealed) for the gas outlet with respect to non-sealed locations (corresponding to a gas passage of 100%) only about 1% to about 20%, in particular approx. 5% to about 15%, or in particular about 1% to about 3%, of the introduced gas (noble or inert gas) can escape. Thus, a sufficiently high pressure difference between the interior of the slide closure 1 and the environment are built. Inside the slider lock 1 thus creates an overpressure, so that substantially no ambient air penetrates into this.

At the sealing plate 50 is a carrier ring 98 arranged. The carrier ring 98 is fixed, z. B. by means of screws and / or bolts, with the sealing plate 50 connected. On the carrier ring 98 a bayonet closure is formed, by means of which a nozzle 99 on the carrier ring 98 attach. 4 shows a further cross-sectional view of the slide closure 1 out 3 , 4 shows the connecting elements between the sealing plate 50 and slider frame 20 , The connecting elements comprise or are spring elements 60 . 60 ' , In 4 are two spring elements 60 . 60 ' shown. Overall, in the embodiment, four spring elements 60 . 60 ' used. Also conceivable are more than four spring elements 60 . 60 ' , z. B. five, six, seven or eight spring elements. Also conceivable are two, three, nine or ten spring elements.

5 showed a detail view of section V off 4 , Each of the spring elements 60 . 60 ' includes a screw 64 , a feather 62 , in particular a coil spring, and a nut 66 , which are movable with respect to the spring housing 67 and thus movable relative to the slide frame 20 is arranged. The mother 66 and the spring 62 are in a spring housing 67 arranged. The spring housing 67 is rigid and fixed with slider frame 20 connected. The spring housing 67 stands down from the slider frame 20 out.

Other types of springs instead of or in addition to a coil spring, for. As one or more disc springs, Evolutfedern, gas springs and / or other types of springs are conceivable.

The screw 64 is used to attach the sealing plate 50 on the slider frame 20 through a recess 56 the sealing plate 50 guided and through a sleeve 68 in the spring housing 67 introduced. By tightening the screw 64 in the thread of the nut 66 engages, becomes the mother 66 against the spring force of the spring 62 away from the slider frame 20 (in 5 down). The feather 62 is located between the mother 66 and the lower end of the spring housing 67 , The sleeve 68 runs inside the spring 62 , The mother 66 is done by tightening the screw 64 from the slider frame 20 , against the spring pressure of the spring 62 , and towards the sealing plate 50 emotional. This happens until the mother 66 at the upper end of the sleeve 68 strikes (in 5 to see). The screw is thus fully tightened. By the length of the sleeve 68 can thus be determined how far the mother 66 against the spring 62 can be moved. If the sleeve 68 has a longer length, the spring 62 less compressed and pulls the sealing plate 50 with a smaller force to the sliding housing 10 approach.

The head of the screw 64 is so in a recess 56 the lower side 55 the sealing plate 50 added that the head of the screw 64 plan with the lower side 55 the sealing plate 50 concludes. The head of the screw 64 can also be slightly (about 1 mm to about 2 mm) across the bottom side 55 the sealing plate 55 protrude. On the upper side of the sealing plate 50 is another recess 56 present, in the part of the spring housing 67 can be included. The feather 62 practices against the mother 66 a force, in turn, the screw 64 pulls up or pushes and consequently the sealing plate 50 against the lower end 12 of the sliding housing 10 pulls or presses or presses.

Between the sealing plate 50 and the bottom 12 of the valve body 10 are seals 51 . 51 ' arranged the space between the sealing plate 50 and slide housing 10 , in particular gas-tight, seal.

Between the top of the valve body 10 ie the mounting plate 75 and the side walls of the valve body 10 is a circumferential seal or seals, namely slide housing seals 11 . 11 ' , arranged for gas-tight sealing. Also in the field of hydraulic device 23 , ie in particular the shaft, which is the force of the piston rod of the hydraulic cylinder in the slide closure 1 ie on the slider frame 26 transmits are one or more seals (hydraulic seals 25 . 25 ' ) arranged to seal the gap gas-tight. The hydraulic seal (s) is / are in particular a stuffing seal.

All seals can be made of the same material, eg. B. wire-reinforced graphite mesh, or comprise this material. Alternatively, the seals or individual seals may be made of other materials.

The spout 45 or the lower plate sits in an exchange ring 59 , The change ring serves to the the spout 45 or to guide the spout / bottom plate and to take the form. It also serves to move or move the slider frame 20 occurring horizontal forces (in 3 from left to right) from the slider frame 20 on the sealing plate 50 transferred to. Thus, the spring elements 60 . 60 ' no horizontal forces transmitted or are not burdened by this. This extends the life of the spring elements 60 . 60 ' and thus the slider closure 1 all in all. For power transmission is a power transmission ring 58 that the change ring 59 at least partially, preferably completely, encloses. The power transmission ring 58 is fixed to the sealing plate 50 connected. In the console 23 (called "lantern"), a cylinder can be inserted. The wave 22 (called "intermediate piece") transmits the force of a piston rod or the cylinder on the slide frame 20 , The piston rod is driven by drive (not shown). Thus, the slider frame 20 from right to left, ie from the basic position, pushed or moved. The slider frame 20 together with the slide plate 40 with the spout 45 and the sealing plate 50 be parallel to the top of the sliding housing 10 opposite the container and opposite the slide housing 10 postponed. The headstock 30 and the mounting plate 75 are rigidly connected or connectable to the container. By moving the passage opening 32 the top plate 30 through the top of the slide plate 40 locked. The passage opening 32 and the spout opening 46 are no longer in an alignment direction, ie the passage opening 32 and the spout opening 46 are no longer in alignment. The slider frame 20 is from the intermediate piece or the shaft 22 as far to the left in 3 moved until the desired position or the rear end position of the cylinder (inside the lantern) has been reached. The left side of the slider frame 20 does not hit the spacer 26 but a gap of about 1 mm to about 2 mm remains. However, it is also conceivable that the left side of the slider frame 20 to the spacer element 26 abuts. In this closed position no metal can pass through the opening 32 flow.

When moving the slider frame 20 occurring horizontal forces on the exchange ring 59 to the sealing plate 50 transfer. The spring elements 60 . 60 ' do not need to transmit horizontal forces. When moving the slider frame 20 slides the sealing plate 50 along or on the bottom 12 of the sliding housing. When the sliding hydraulic cylinder 22 is moved back to the right, this moves the sliding housing 10 together with the slide plate 40 with spout 45 and the sealing plate 50 turn right again into the 3 shown basic position. Now the passage opening 32 and the spout opening 46 Aligned and it can metal again from the container through the passage opening 32 and the spout opening 46 flow and consequently through the spout 45 flow.

If by sliding back and forth or moving the sealing plate 50 on the bottom 12 the sliding housing abrasion occurs, is due to the spring force of the spring elements 60 . 60 ' the sealing plate 50 pulled closer to the sliding housing. The same applies if the annular sealing plate seal 51 or the sealing plate seals 51 . 51 ' should decrease in size. Even if the sliding housing 10 (in 3 ) should move slightly upward, the sealing plate 50 also moved upwards. This will ensure that the gap between the bottom 12 of the sliding housing 10 and the sealing plate 50 always sealed gas-tight.

On the bottom 55 below the sealing plate 50 is a protective plate 70 arranged the the sealing plate 50 protects against mechanical and / or thermal effects. The protective plate 70 has a larger width in cross-section than the sealing plate 50 (please refer 3 ).

The slider lock 1 includes an argon gas connection 80 , The argon connection can be in the mounting plate 75 be arranged. Other positions of the argon connection 80 are conceivable .. About the argon gas connection 80 Argon gas (conceivable is another inert gas such as a noble gas, such as helium) in the interior of the sliding housing 10 directed. The noble gas flows inside the sliding housing 10 in the area between the exchange ring 59 and the spout 45 , The noble gas then flows along the outside of the spout 45 downward. Thereafter, the noble gas flows to the spout 45 along from the bottom side 12 of the sliding housing 10 and thus substantially parallel to the spout opening 46 , This prevents the metal from contacting and oxidizing with the air atmosphere.

6 shows a side view of the slide closure 1 from the 3 - 5 , A small area of 6 shows a cross-sectional view and shows the position of a spring element 60 . 60 ' in relation to the other slide closure 1 ,

7 shows a further cross-sectional view of the slide closure 1 from the

3 - 6 , It is clear in 7 the coaxial / aligned orientation of the passage opening 32 in the mounting plate 75 and the spout opening 46 the spout 45 to see. The passage opening 32 and the spout opening 46 have the same diameter. However, it is also conceivable that the diameters are different from each other.

The slider closure according to the invention 1 is a two-plate gate valve. When closing the passage opening 32 only exactly two plates, namely the slide plate 40 and the sealing plate 50 opposite the container or opposite the top plate 30 be moved.

LIST OF REFERENCE NUMBERS

1

slide closure

10

slide housing

11, 11 '

Valve body seal

12

the metallurgical container side facing away from the slide housing

20

slide frame

21

the metallurgical container side facing away from the slide frame

22

wave

23

Hydraulic device / console

25, 25 '

hydraulic seal

26

spacer

30

headstock

32

Through opening

40

slide plate

45

spout

46

spout

50

sealing plate

51, 51 '

Sealing plate seal

55

the metallurgical container side facing away from the sealing plate

56

recess

58

Power transmission ring

59

Wechselring

60, 60 '

spring element

62

feather

64

screw

66

mother

67

spring housing

68

shell

70

protection plate

75

mounting plate

76

Flow opening

80

Argon gas connection

98

support ring

99

jet

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4007993 A1 [0002]

Claims (10)

Slider closure ( 1 ) for a metallurgical container comprising a slide frame ( 20 ), a slider housing ( 10 ), wherein the slide frame ( 20 ) in the valve body ( 10 ) is slidably disposed, a head plate ( 30 ) which is connected via a mounting plate fixedly connected to the metallurgical container ( 75 ) is connectable to the metallurgical container, a sealing plate for sealing the side facing away from the metallurgical container ( 12 ) of the valve body ( 10 ), and a slide plate ( 40 ) with spout ( 45 ) for discharging the metal and / or the metal alloy from the metallurgical container, wherein the slide plate ( 40 ) in the slide frame ( 20 ) is inserted, wherein the slide plate ( 40 ) with spout ( 45 ) together with the sealing plate ( 50 ) opposite the top plate ( 30 ) is arranged displaceably, and wherein the sealing plate ( 50 ) by means of one or more spring elements ( 60 . 60 ' ) to the side facing away from the metallurgical container ( 12 ) of the valve body ( 10 ) is pressed. Slider closure ( 1 ) according to claim 1, characterized in that the sealing plate ( 50 ) substantially gas-tight with the side facing away from the metallurgical container ( 12 ) of the valve body ( 10 ) connected is. Slider closure ( 1 ) according to claim 1 or 2, characterized in that the one or more spring elements ( 60 . 60 ' ) one screw each ( 64 ), one opposite the slide housing ( 10 ) movable mother ( 66 ) and a spring ( 62 ). Slider closure ( 1 ) according to one of the preceding claims, in particular according to claim 3, characterized in that the nut ( 66 ) in a spring housing ( 67 ) is movably arranged. Slider closure ( 1 ) according to one of the preceding claims, in particular according to claim 3 or 4, characterized in that the screw ( 64 ) is in each case as far attracted to the stop that the head of the screw ( 64 ) substantially plan with the side facing away from the metallurgical container ( 55 ) of the sealing plate ( 50 ) completes. Slider closure ( 1 ) according to one of the preceding claims, in particular according to one of claims 3-5, characterized in that the screw ( 64 ) in each case in a sleeve ( 68 ), that the length of the sleeve ( 68 ) the minimum distance between the nut ( 66 ) and the side facing away from the metallurgical container ( 21 ) of the slider frame ( 20 ). Slider closure ( 1 ) according to one of the preceding claims, characterized in that the sealing plate ( 50 ) by means of the spring element ( 60 . 60 ' ) or the spring elements ( 60 . 60 ' ) with the slide frame ( 20 ) is firmly connected. Slider closure ( 1 ) according to one of the preceding claims, characterized in that the slide closure ( 1 ), in particular the slide frame ( 20 ), is designed such that even with a displacement of the slide frame ( 20 ) together with sealing plate ( 50 ) relative to the sliding housing ( 10 ), in particular by means of gaskets, is gas-tightly sealed in such a way that an inert gas, in particular a noble gas, in an upper region into the valve body ( 10 ) can be flowed in such that this then along at least partial areas of the spout ( 45 ) flows, and the protective gas, the slide closure ( 1 ) at a lower end of the spout ( 45 ) leaves. Slider closure ( 1 ) according to one of the preceding claims, characterized in that when moving the slider frame ( 20 ) together with sealing plate ( 50 ) for closing an opening of the metallurgical container exactly two plates, in particular only the slide plate ( 40 ) and the sealing plate ( 50 ), be moved. Slider closure ( 1 ) according to one of the preceding claims, characterized in that the sealing plate ( 50 ) with a respective over this edge protruding protective plate ( 70 ), such that the protective plate ( 70 ) together with the sealing plate ( 50 ) is displaceable as a disk unit.

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