JPH01143757A - Rotary sliding closing device for metallurgical vessel and body of revolution for such rotary sliding closing device - Google Patents

Abstract

PURPOSE: To improve the adjusting accuracy of the device and to prolong the life of the device by forming a flange part of an inverted conical shape to a rotary body in contact with a bored brick and driving this flange part by tongues and grooves to a metallic rotary cage. CONSTITUTION: The bored brick 4 has three tap holes 8 having wearing sleeves 7 and a wearing plate 9 is arranged below the same. A refractory outlet tube 15 having the inverted conical flange part 16 forms the rotary body and the sliding surface 11 of the wearing plate 9 comes into contact with the sliding surface 14 of the rotary body. This outlet tube 15 is supported at the metallic rotary cage 21 and is rotationally driven via the tongues and grooves 22, 23. The tap holes 8 of the brick 4 and the outlet tube 15 are connected by a connecting passageway 19 and the opening and closing of the passageway of molten metal are executed via the driving of the rotary body. As a result, the adjusting accuracy of the device is improved and the respective parts are thermally stabilized and, therefore, the device life is improved.

Description

[Detailed Description of the Invention] [Industrial Application] The present invention relates to a refractory perforated brick arranged at the bottom of a container to form a fixed perforated plate, and a refractory perforated brick which is arranged at the bottom of a container and forms a fixed perforated plate, a rotatable refractory rotating body forming a rotating plate in contact with the perforated brick, the perforated brick having at least one eccentric tap and at least one flow body arranged on the rotary body, each flow body having a A rotating layer for a metallurgical vessel, especially a vessel for charging molten steel into a mold, which connects the outlet of the rotor with a shaft hole located on the axis of rotation of the rotating body! [121[lJl chain device? Regarding T.

[Conventional technology]

A rotary sliding closure device of this kind, known for example from Austrian Patent No. 322 753, diverts the molten metal from an eccentric inlet to an outlet on the axis of rotation in a refractory slide wear element. It is ideally suited for transfer from the intermediate container to the mold of the continuous casting machine. This is because, during the opening and closing movements of the sliding body, the location of the tapping pipe protruding into the mold remains unchanged.

No additional lower plate is required for connecting the outlet pipe or the outlet g4 pipe, for example in the form of a submerged tap, as used in the known rotary bed closure devices. However, the construction of the sliding body which is unsatisfactory in handling and effectiveness, as well as the refractory fIs wear element composition and replaceable arrangement in the gold r114M sliding body part are disadvantageous.

[The point at which the invention attempts to solve]

The 111 problems to be solved by this project are the rotating bed It
lI! The object of the present invention is to improve the structure of the Jg chain device.

[Means for solving problems]

In order to solve this problem 1111, according to the present invention, the rotary body that contacts the perforated brick or a part of the perforated brick is configured as an outflow pipe having a flange part on the connection side, and this flange part It is proposed that at least one connecting passage leading from the eccentric outlet to the central axis hole of the outflow pipe is arranged, and that this flange part has a fitting part with a drivable metal rotating cage. ing. A rotating body constructed in this way allows the installation of a connecting hole from the eccentric tap to the central shaft hole with relatively little outlay in manufacturing technology and with due consideration of thermal conditions, so that it can be easily operated during operation. A stress-free and uniform heat load on the rotating body is achieved each time, which increases the useful life of the rotating body. Furthermore, the snap-fit connection between the rotating body and the rotating cage holding it can be carried out in a simple manner that ensures operationally reliable transmission of the required torque, with minimal handling effort involved. It is being

In order to achieve the object of the present invention, a flange portion having a sliding surface of a rotating body is formed in an inverted truncated cone shape on an outflow pipe, and the peripheral surface of this flange portion has a counter-same surface and an opposing means. It has turned out to be particularly advantageous to provide means for forming a cohesive connection with the rotating cage.

In this case, grooves and keys are preferably used as the fitting means. This arrangement allows for the exchange of rotating bodies in the rotating cage without spacing and by simple removal and fitting.

Furthermore, it is advantageous in terms of flow if the connecting channel is configured in a helical manner. Furthermore, it is advantageous to provide the flange part with a plurality of connecting channels, preferably three, which are equally distributed over the circumference and open to the end of the shaft bore. The rotating body of the rotary sliding closing device is thereby provided with a plurality of reserve passages, which can be used one after the other if required.

Furthermore 1. At the same time, the perforated brick can be provided with a plurality of tap holes opening into the connecting passage. The melt S flow is thereby divided, which makes the adjustment of the rotary sliding closure device or the desired flow rate of 'f8rJA more precise. Moreover, the heat load on the rotating body is made even more uniform.

If the perforated brick is manufactured from a high-value refractory material, the perforated brick is attached to a wear plate which is provided on the perforated brick so as to be replaceable and prevented from rotating by upper means. Although it has proven economically particularly advantageous to arrange the rotor as part of the rotor, it is possible to have a fixed sliding surface which absorbs the pressing force of the rotating body.

Regarding the compensation of the sealing pressure to be applied to the sliding surface of a rotary sliding closing device, which is transmitted completely from the rotating body to the perforated brick, the present invention provides for fixing the perforated brick to the bottom plate of the metallurgical vessel and further For easy exchangeability, it is proposed to support the bottom lining in breakable anchors, for example of fireproof concrete barbs.

Another feature of the invention is that there is an external gas contact between the fixed sliding surface and the rotatable sliding surface via a gas passage in a perforated brick.
! A circumferential groove is provided which is connected to one part, from which at least one nozzle opens into the axial bore in the flange part. This arrangement allows the introduction of oxygen into the combustion chamber of the solidified molten metal at the tap on the rotating body. Furthermore, inert gases can also be introduced, for example to prevent coagulation of the molten metal or for metallurgical treatments.

It is within the scope of the invention that the long outflow pipe, which is immersed in the Wg lagoon of the mold, is also configured as a rotating body in order to protect the tap water jet from the outside air. On the other hand, it is a manufacturing and operational advantage to provide connection means for attaching the refractory extension tube to the rotating body in the area of the rotating cage that projects from the housing or onto the housing lid.

The present invention is particularly suitable for the rotation [1! ! The present invention also relates to a rotating body for use in a closure device. Such a rotating body is constructed as an outflow pipe with a connecting flange part, in which a connecting passage leading to the central axial hole of the outflow pipe, which is to be attached to the eccentric outlet, is provided. Advantageously, at least one opening is arranged and this flange part has means for forming a mating connection with the movable metal cage. To obtain the eccentric inlet and central outlet of Wj Lagoon, such a rotating body is very easy! 1. Attachment to the rotating sliding closure device and rotating sliding i [I! ! Can be removed from the closure device.

In this case, the flange portion of the rotating body having the 1!1111I surface is preferably formed into an inverted truncated cone shape to form the outflow pipe, and the periphery of this flange portion has a fitting connection portion with the rotating cage having the opposing surface and the opposing means. Preferably, it comprises means for forming.

In this way, the necessary fit between the rotating body and the rotating cake can be reliably achieved during assembly.

The means for forming the mating connection preferably consist of a groove, preferably radially arranged, for cooperation with the key of the rotating cage.

It is advantageous if the connecting channel is of helical design.

In order to ensure uniform thermal stresses, the rotating body has, in a further development of the invention, a plurality of connecting passages distributed equally over the circumference, preferably with equal angular distances, opening into the end of the shaft bore in the flange part. I'm waiting for you.

The sliding surface of the rotating body is preferably designed to be convex in order to cooperate with the concave sliding surface of the perforated brick. Possible deviations in the flat pressing of the rotating body onto the perforated brick can thereby be compensated for.

In another embodiment of the invention, the sliding surface of the rotating body is provided with a circumferential groove which is connected to the outer gas connection via the gas passage of the perforated brick, and from this circumferential groove there is at least one section in the flange section. Two nozzles open into the shaft hole. Through such a gas passage, oxygen can be used for combustion of the hot water solidified at the outlet on the rotating body. Furthermore, Wg leakage can be prevented by inert gas, or Wj
Metallurgical processing of the lagoon can be carried out.

If the rotating body is configured as a submerged tap that projects into the mold in a continuous casting machine, the tapping jet is protected from the outside air by the rotating body itself.

In order to replace wear parts of the rotary sliding closure and in particular of the rotary body, a known tap closure device can be arranged in the container, by means of which the outflow opening of the tap is closed when necessary. can be closed.

[Example j The invention will be explained below with reference to the drawings.

In Figure 1, l stands for metal plate bottom 2 and perforated brick 4.
is inwardly exchangeable by means of a swingable hook-shaped retainer 5 on this plate bottom 2, with a refractory bottom lining 3 held in a breakable layer 6 of refractory concrete ■, only in the area of the tap opening. Shows the metallurgical vessel shown. The perforated brick 4 has three taps with wear sleeves 7 and one wear plate 9 below, which supports the wear sleeves 7 and is an extension of the tap 8. hole 10 in
and has at least an ip sliding surface 11. Furthermore, as can be seen in FIG. 3, this circular wear plate 9 has stop means 12 formed as straight sections on its periphery, which stop means have a corresponding contour of the perforated brick 4. Rotation is prevented in the recess 13 to hold the wear plate replaceably. This perforated brick, in addition to its normal function in connection with the rotary sliding closing device, also assumes the retention of a wear plate 9 whose sliding surface 11 has a refractory outflow with a plate-shaped flange part 16. It cooperates with the sliding surface 14 of the rotating body 15 , 16 consisting of the tube 15 . The axis of rotation 17 of this rotating body
is the same as the axis of the tube 15 and the axis of the design circle 18,
The tap holes 8 and the holes 10 of the wear plate 9 are located uniformly distributed on this design circle, and this design circle is found on approximately half the radius of the sliding surface 14 of the rotating body 15, 16. Wear plate 9
Connecting passages 19 distributed at the same spacing as the outlet 8 lead from the holes 10 to the holes 20 of the outlet pipe 15 of the rotating body 15.16, so that the connecting passages 19 are routed below the outlet 8. In this case, a flow can flow from the container l into the shaft hole 20, but in an intermediate position it is blocked.

The rotary body 15 , 16 is supported in rotationally fixed manner on the rotary cage 21 , the torque being transmitted via a snug connection 22 , 23 , which snaps around the conical circumference of the flange part 16 . Groove 22 arranged in surface 25
and a key 23 with a corresponding contour of the rotating cage 21.

Equally advantageously, gearing can be used as the mating connection 22, 23, or the groove 22 is deepened as in FIG. 4 and the key 23 is correspondingly constructed. Thereby - tight fitting joint part 2
2.23 occurs, and this cohesive joint allows the attachment of a few groove key elements distributed around the periphery.

The rotating cage 21 holding the rotary body 15.16 has a toothed ring 26 below the mating connection 22.23, on which a drive pinion 27 acts, which is not shown in the figure. The housing 29 is connected to a non-contact transmission and is supported in a bulge 28 of a housing 29 surrounding the toothed ring 26. The housing 29 is held on a pivot screw 30 and guides an oval, plate-shaped housing lid 31 which holds the rotating cage 2I via a splittable ball bearing 32 and is attached to the pivot screw 30. plate splash 33
through which it flexes elastically but presses the sliding surface 14 of the rotating body 15 , 16 tightly against the sliding surface 11 of the wear plate 9 .

After loosening the pivot screw 30 attached to the face of the housing 29, the housing N31 can be swung around a hinge (not shown) in the circumferential area between the housing 29 and i[31. The rotary body 15.16 and the rotary cage 21, which project outwardly through the central opening of the housing l131, are therefore accessible. housing 1i3
A refractory extension pipe 35 can be connected to the rotating body 15.16 from which the outlet pipe 15 projects, which extension pipe is captured at the conical surface 36 by a connecting means 37 configured as a screw nut that can be screwed onto the rotating cage 21. has been done.

The tap 81 in the perforated brick 4 shown in FIG. The symmetrical arrangement of the holes IO and the connecting passages 19, the wear plates 9 and the rotating bodies 15,16 results in an almost stress-free and uniform thermal loading of the above-mentioned wear elements by the flowing melt, which aids in durability.

FIG. 5 shows only one outlet 8 and one connecting passage 19.
A practical example is shown. According to this, the perforated brick 4 has a tap 8 and the rotating body 15, 16 has a connecting channel 19 leading to the shaft hole. Also, the perforated brick 4 does not have a separate wear sleeve at the tap 8 and is therefore entirely manufactured from a high-value refractory material, which material covers the fixed sliding surface 11 of the perforated brick. Allows direct placement in 4. Furthermore, unlike the configuration shown in Figure 1 and Figure 3, the sliding surface! ! is formed in a concave shape, and the opposing sliding surface 14 of the rotating body 15, 16 is formed in a convex shape,
It helps compensate for possible deviations in the flat pressing of the rotating body 15116.

According to FIG. 6, the sleeveless outlet 8 and the fixed sliding surface 11 are present in a highly wear-resistant wear body 38 which is replaceably arranged on the perforated brick 4 and is configured as a truncated conical brick. do. Through the perforated brick 4 and the wear body 38,
A gas channel 39 containing holes extends, which opens into a circumferential groove 41 provided between the sliding surfaces 11 and 14 with an outer gas connection 40, from which
At least one nozzle 42 provided in the flange portion 16 communicates with the axial bore 20 of the rotating body 15116. Gas can be supplied to the circumferential groove 41 and the shaft hole 20 via the gas connection 4o, in which case the gas pressure in the circumferential groove 41 is
Air between the sliding surfaces 11 and 14 is prevented from flowing into the Wj flow, while the introduction of gas into the shaft hole 20 serves to prevent solidification or purify the molten metal.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a rotary sliding closure device constructed according to the present invention, FIG. 2 is a plan view of the rotating body according to FIG. 1, 3rM is a plan view of the 114th wear plate, and FIGS. The figure is a simplified cross-sectional view of an alternative configuration. ! ... Container, 2... Metal plate bottom, 3... Bottom lining,
4... Perforated brick, 8... Outlet, 15... Outflow pipe, 16... Flange portion, 19... Connection passage,
20...shaft hole, 2! ...Rotating cage, 22...Groove, 23...Key

Claims (1)

[Scope of Claims] 1. A refractory perforated brick (4) disposed on the container bottom (2, 3) forming a fixed perforated plate, and rotating in leak-tight contact with this perforated brick. It consists of a rotatable refractory rotating body (15, 16) forming a plate and made of perforated bricks (4
) has at least one eccentric tap (8) and at least one flow body is arranged on the rotary body (15, 16), which flow body connects each tap (8) to the rotary body (15).
, 16) in contact with the perforated brick (4) or a part of this perforated brick, The rotating bodies (15, 16) are connected to the connection side flange part (1
6), in the flange part of which there is at least one connecting passage (
A fitting connection part (22,
23) A rotary sliding closure device for a metallurgical vessel, characterized in that it has. 2 A flange portion (16) having a sliding surface (14) of the rotating body (15, 16) is formed in an inverted truncated cone shape on the outflow pipe (15), and the peripheral surface (25) of this flange portion is means (22, 23) for forming a mating connection (22, 23) with a rotating cage (21) having and opposing means (23);
).
Rotary sliding closure device as described in paragraph. 3. Rotary sliding closure device according to claim 2, characterized in that the cohesive joint (22, 23) consists of a radially arranged groove (22) and a key (23) . 4. Rotary sliding closure device according to one of the claims 1 to 3, characterized in that the connecting channel (19) is of helical design. 5 A plurality of connecting passages (19), which are equally distributed over the circumference and open to the end of the shaft hole (20), are provided in the flange portion (
16) Rotating and sliding closing device according to one of the claims 1 to 4, characterized in that it is provided in one of claims 1 to 4. 6. One of claims 1 to 5, characterized in that the perforated brick (4) is provided with a plurality of tap holes (8) opening into the connecting passage (19). Rotary sliding closure device as described in. 7. The sliding surface (11) of the perforated brick (4), which cooperates with the sliding surface (14) of the rotating body (15, 16), is replaceable with this perforated brick and the stop means (12) Claims 1 and 2 are characterized in that the perforated brick (4) is arranged as part of the wear plate (9) which is provided to prevent rotation by
Rotary sliding closure device according to one of the clauses. 8. Claims characterized in that the wear plate (9) is constructed as a wear body (38) with an outlet (8) flush with the perforated brick (4) on the inside Rotating sliding closure device according to clause 7. 9 The perforated brick (4) is held in a container (
Claims 1 to 1 are characterized in that they are fixed to the bottom plate (2) of 1) and supported by a breakable layer (6) made of fireproof concrete in the bottom lining (3). Rotary sliding closure device according to one of clauses 8. 10 Fixed sliding surface (11) and rotatable sliding surface (14)
and a circumferential groove (41) connected to the outer gas connection (40) via the gas passage (39) of the perforated brick (4).
is provided, and at least one nozzle (42) is connected to the rotating body (15, 1) from this circumferential groove at the flange portion (16).
Rotary sliding closure device according to one of the claims 1 to 9, characterized in that it opens into the axial bore (20) of 6). 11. Claims 1 to 1, characterized in that the rotating bodies (15, 16) are constructed as immersion taps protruding into the mold in a continuous casting machine.
Rotary sliding closure device according to one of clauses 0. 12. The area of the rotating cage (21) protruding from the housing (29) or above the housing lid (31) provides connection means (37) for the extension tube (35) leading to the rotating body (15, 16). Rotary sliding closure device according to one of the claims 1 to 11, characterized in that it has. 13 Refractory perforated bricks (4) placed on the container bottom (2, 3) forming a fixed perforated plate and rotatable perforated bricks (4) forming a rotary plate in leaktight contact with the perforated bricks; It consists of a fireproof rotating body (15, 16) and a perforated brick (
4) has at least one eccentric tap (8) and at least one flow body is arranged on the rotary body (15, 16), which flow body connects each tap (8) to the rotary body (1).
A rotary body of a rotary sliding closure device for metallurgical vessels, which is connected to the shaft hole (20) on the axis of rotation (17) of 5, 16), the rotary body having a flange portion (16) on the connection side. An outflow pipe (15) configured as an outflow pipe (15) and to be attached to the eccentric outlet (8) is attached to this flange part.
At least one opening of the connecting passageway (19) leading to the central shaft hole (20) of the metal fitting connection (22, 23) with the driveable metal rotary cage (21) is arranged. ) A rotary body of a rotary sliding closure device for metallurgical vessels, characterized in that it has means (22) for forming. 14 A flange portion (16) having a sliding surface (14) is formed in the outflow pipe (15) in the shape of an inverted truncated cone, and the circumferential surface (25) of this flange portion connects the opposing surface and the opposing means (23). The fitting connection part (22, 2) with the rotating cage (21)
14. A rotating body according to claim 13, characterized in that it comprises means (22) for forming a rotor according to claim 13. 15 Means (22) for forming a mating connection (22, 23) are arranged in a radially arranged groove (22) for cooperation with the key (23) of the rotating cage (21).
) The rotating body according to claim 14. 16. Rotating body according to one of claims 13 to 15, characterized in that the connecting passage (19) is constructed in a spiral shape. 17. characterized in that the flange part (16) is provided with a plurality of connecting passages (19) distributed equally over the circumference and preferably at equal angular distances and opening to the end of the shaft bore (20); A rotating body according to any one of claims 13 to 16. 18. Claim 13, characterized in that the sliding surface (14) is configured convexly for the cooperation of the concave sliding surface (11) of the perforated brick (4). or the 17th
A rotating body according to one of the items. 19 The sliding surface (14) is provided with a circumferential groove (41) connected to the outer gas connection (40) via the gas passage (39) of the perforated brick (4), and from this circumferential groove the flange 19. Rotating body according to claim 13, characterized in that in the part (16) at least one nozzle (42) opens into the shaft bore (20). 20. One of claims 13 to 19, characterized in that the rotating bodies (15, 16) are constructed as immersion taps projecting into the mold in a continuous casting device. The rotating body described in .