CA2145279A1 - Rotary closure for metallurgical vessels - Google Patents
Rotary closure for metallurgical vesselsInfo
- Publication number
- CA2145279A1 CA2145279A1 CA002145279A CA2145279A CA2145279A1 CA 2145279 A1 CA2145279 A1 CA 2145279A1 CA 002145279 A CA002145279 A CA 002145279A CA 2145279 A CA2145279 A CA 2145279A CA 2145279 A1 CA2145279 A1 CA 2145279A1
- Authority
- CA
- Canada
- Prior art keywords
- discharge
- drain
- sleeve
- sleeves
- rotary closure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
- B22D41/28—Plates therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
- B22D41/26—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings characterised by a rotatively movable plate
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Closures For Containers (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to a rotary closure for the discharge opening in the bottom of a metallurgical vessel.
The characterizing feature of the invention is that inserted in the lower end portion of its discharge block (1) is a discharge sleeve (3) which has a pouring channel (5) extending at an inclination and against whose lower horizontal end face (7) a sleeve (3a) shaped identically laterally inverted to the discharge sleeve (3) bears via its complementary end face (7a), the sleeve (3a) being inserted in a drain (10) disposed to rotate around a vertical axis (4) in relation to the fixed discharge block (1), and in a predetermined rotated position (opening position) of the drain (10) the opposite openings of the pouring channels (5, 5a) in the sleeves (3, 3a) are in alignment, while in other rotated positions (closure positions) said openings are completely or partially separated from one another.
The characterizing feature of the invention is that inserted in the lower end portion of its discharge block (1) is a discharge sleeve (3) which has a pouring channel (5) extending at an inclination and against whose lower horizontal end face (7) a sleeve (3a) shaped identically laterally inverted to the discharge sleeve (3) bears via its complementary end face (7a), the sleeve (3a) being inserted in a drain (10) disposed to rotate around a vertical axis (4) in relation to the fixed discharge block (1), and in a predetermined rotated position (opening position) of the drain (10) the opposite openings of the pouring channels (5, 5a) in the sleeves (3, 3a) are in alignment, while in other rotated positions (closure positions) said openings are completely or partially separated from one another.
Description
21~279 P ~ P 9302265 WE/wa 52395WO
22.09.1994 ROTARY C~OSURE F~R METALLURGICAL VESSELS
The invention relates to a rotary closure for opening and closing the discharge opening in a sleeve inserted in the discharge block in the bottom of a metallurgical vessel, comprising a drain disposed to rotate around a vertical axis in relation to the fixed discharge block and having an inserted sleeve which contains a pouring channel extending at an inclination therein and which completely or partially opens or closes the discharge opening in the discharge block in dependence on the rotated position of the drain.
Stopper rods, slide gates and rotary closures are used for the discharge openings of metallurgical vessels.~ The two last-mentioned kinds of closure have become widely adopted in recent times, while the use of stopper rod closures have been reduced.
EP-A-0 346 258 discloses a slide closure by means of which the discharge opening in the bottom of the metallurgical vessel is closed and opened by the sliding of a slide plate in relation to fixed bottom plates of the metallurgical vessel. Different constructions of rotary closures exist, for example, as disclosed in DE-A-l 910 247 and DE-C-3 843 865. DE-A-1 910 247 discloses a rotary closure for the discharge opening in the bottom of a metallurgical vessel which has the aforementioned features, a sleeve having a vertical pouring channel being inserted in the discharge block a cylindrical sleeve which is provided in the drain and in which a pouring channel extending at an inclination and having vertically extending end portions is provided at the lower horizontal end face of the sleeve in the discharge block.
In predetermined rotated positions, the opposite openings of the respected pouring channel are completely or partially in alignment, while in other rotated positions they are separated from one another.
US-A-3 712 518 discloses a slide-type closure having plates of identical or similar shape and dimensions, to simplify the production and storage of the wearing parts.
Basically, rotary closures differ from slide closures by the fact the discharge opening of the metallurgical vessel is opened and closed not by the linear sliding of the slide plates, but by the rotation of a drain block. In one position of the drain block the pouring channels are in alignment, so that the discharge opening is open. In other rotated positions of the drain block the pouring channels in the discharge sleeve in the bottom of the metallurgical vessel on the one hand and in the drain block on the other hand are separated from one another, so that the discharge opening of the metallurgical vessel is closed.
It is true that i~ rotation takes place around an axis at an inclination to the vertical, something which makes the rotating mechanism constructionally expensive, the discharge opening can be kept fixed, but the direction of the axis of the pouring channel changes when the rotary closure is actuated.
214~2~
~ 3 -One disadvantage of the prior art rotary closure is that the blocks which are rotatable in relation to one another are relatively complicated and differently shaped.
It is an o~ject of the invention to provide a cheaper construction for a rotary closure.
To solve the problem stated, according to the invention inserted in the discharge block and the drain are identically constructed sleeves which have pouring channels extending at an inclination and which in the incorporated state bear identically laterally inverted against one another via their complementary horizontal end faces.
Preferably the sleeves are frustoconical in shape and have a widened edge at their end faces. According to the invention the sleeves are made o~ a highly refractory material which can also contain carbon.
According to another preferred embodiment of the rotary closure according to the invention, opposite end portions of the pouring channels extend vertically in the sleeves. This feature favours the deflection of the poured jet and avoids sharp transitions from one pouring channel to the other.
-One important advantage of the rotary closure constructionaccording to the invention is that the sleeves on the bottom of the metallurgical vessel on the one hand and in the drain on the other hand are identically shaped. This cheapens manufacture and 21~7~
facilitates stock holding, since only one single kind of ~lock must be produced and stocked, whereas the prior art rotary closure constructions always required differently shaped blocks which were in sliding engagement with one another. Another advantage of the construction according to the invention is that no axial offsetting takes place - i.e., the discharge channel in the drain - e.g., an immersion drain - is coaxial with the discharge channel in the discharge block in the bottom of the metallurgical vessel. Since moreover the dividing plane between the interengaging sleeve extends horizontally, the rotary drive for rotating the drain out of the closure position into the opening position and vice versa can be constructed relatively simply.
An embodiment of the rotary closure according to the invention is illustrated in the drawings, which show:
Fig. 1 the rotary closure in longitudinal section, and Fig. 2 a plan view of the drain.
Inserted in the bottom of a metallurgical vessel (not shown) is a discharge block 1 having a vertically extending pouring channel 2. Inserted in the end portion of the discharge block 1 is a frustoconical discharge sleeve 3 containing a pouring channel 5 which extends at an inclination to the vertical axis 4 and discharges into a parallel portion 6 parallel with the vertical axis 4 of the pouring channel 2 and extending as far as end face 7 of the discharge sleeve 3. At its lower end the discharge sleeve 3 has a widened edge 8 which is partially let into the 2~27~
~ 5 -discharge block 1. The lower end of the discharge block 1 is reinforced by a metal ring 9.
An identically constructed sleeve 3a bears via its end face 7a against the lower face 7 of the discharge sleeve 3, so that the sleeves 3, 3a are identically laterally inverted in the incorporated state. The frustoconical sleeve 3a also has an inclined pouring channel 5a discharging at the end face 7a into a portion 6a axis-parallel with the vertical 4. The sleeve 3a is let into a drain 10, possibly an immersion drain. The drain 10 is reinforced at the outer periphery by a metal jacket 11 and has a pouring channel 12 coaxial with the pouring channel 2 in the discharge block 1. The inclined pouring channel 5, 5a in the sleeves 3, 3a discharge at one end into the pouring channel 2i 12 of the discharge block 1 and the drain 10 respectively. The opposite end portions 6, 6a of the pouring channels 5, 5a axis-parallel with the vertical 4 terminate at the end faces 7, 7a of the sleeves 3, 3a. In the position of the sleeves 3, 3a shown in Fig. 1 the pouring channel is separated at the contact faces 7, 7a, so that melt cannot flow out of the pouring channel 2 into the pouring channel 12. This is the position shown in continuous lines in Fig. 2. The openings of the end portions 6, 6a of the inclined pouring channels 5, 5a in the sleeves 3; 3a are laterally offset in relation to one another to such an extent that they cannot register with one another. End portions 6, 6a of the pouring channels 5, 5a in the sleeves 3, 3a can be moved into alignment by rotating the drain 10 around the vertical axis 4, whereby a melt is enabled to flow out through the pouring channel 2 and 5 in the discharge of the metallurgical vessel to 2~ ~527~
~h e pouring channel 5a and 12 in the drain. Other closure positions are shown in chain-dot lines in Fig. 2.
The drain 10 clamped via means which are not shown to the discharge block 1 or pressed thereagainst and is mounted to rotate around the vertical axis 4 in relation to the fixed discharge block 1.
22.09.1994 ROTARY C~OSURE F~R METALLURGICAL VESSELS
The invention relates to a rotary closure for opening and closing the discharge opening in a sleeve inserted in the discharge block in the bottom of a metallurgical vessel, comprising a drain disposed to rotate around a vertical axis in relation to the fixed discharge block and having an inserted sleeve which contains a pouring channel extending at an inclination therein and which completely or partially opens or closes the discharge opening in the discharge block in dependence on the rotated position of the drain.
Stopper rods, slide gates and rotary closures are used for the discharge openings of metallurgical vessels.~ The two last-mentioned kinds of closure have become widely adopted in recent times, while the use of stopper rod closures have been reduced.
EP-A-0 346 258 discloses a slide closure by means of which the discharge opening in the bottom of the metallurgical vessel is closed and opened by the sliding of a slide plate in relation to fixed bottom plates of the metallurgical vessel. Different constructions of rotary closures exist, for example, as disclosed in DE-A-l 910 247 and DE-C-3 843 865. DE-A-1 910 247 discloses a rotary closure for the discharge opening in the bottom of a metallurgical vessel which has the aforementioned features, a sleeve having a vertical pouring channel being inserted in the discharge block a cylindrical sleeve which is provided in the drain and in which a pouring channel extending at an inclination and having vertically extending end portions is provided at the lower horizontal end face of the sleeve in the discharge block.
In predetermined rotated positions, the opposite openings of the respected pouring channel are completely or partially in alignment, while in other rotated positions they are separated from one another.
US-A-3 712 518 discloses a slide-type closure having plates of identical or similar shape and dimensions, to simplify the production and storage of the wearing parts.
Basically, rotary closures differ from slide closures by the fact the discharge opening of the metallurgical vessel is opened and closed not by the linear sliding of the slide plates, but by the rotation of a drain block. In one position of the drain block the pouring channels are in alignment, so that the discharge opening is open. In other rotated positions of the drain block the pouring channels in the discharge sleeve in the bottom of the metallurgical vessel on the one hand and in the drain block on the other hand are separated from one another, so that the discharge opening of the metallurgical vessel is closed.
It is true that i~ rotation takes place around an axis at an inclination to the vertical, something which makes the rotating mechanism constructionally expensive, the discharge opening can be kept fixed, but the direction of the axis of the pouring channel changes when the rotary closure is actuated.
214~2~
~ 3 -One disadvantage of the prior art rotary closure is that the blocks which are rotatable in relation to one another are relatively complicated and differently shaped.
It is an o~ject of the invention to provide a cheaper construction for a rotary closure.
To solve the problem stated, according to the invention inserted in the discharge block and the drain are identically constructed sleeves which have pouring channels extending at an inclination and which in the incorporated state bear identically laterally inverted against one another via their complementary horizontal end faces.
Preferably the sleeves are frustoconical in shape and have a widened edge at their end faces. According to the invention the sleeves are made o~ a highly refractory material which can also contain carbon.
According to another preferred embodiment of the rotary closure according to the invention, opposite end portions of the pouring channels extend vertically in the sleeves. This feature favours the deflection of the poured jet and avoids sharp transitions from one pouring channel to the other.
-One important advantage of the rotary closure constructionaccording to the invention is that the sleeves on the bottom of the metallurgical vessel on the one hand and in the drain on the other hand are identically shaped. This cheapens manufacture and 21~7~
facilitates stock holding, since only one single kind of ~lock must be produced and stocked, whereas the prior art rotary closure constructions always required differently shaped blocks which were in sliding engagement with one another. Another advantage of the construction according to the invention is that no axial offsetting takes place - i.e., the discharge channel in the drain - e.g., an immersion drain - is coaxial with the discharge channel in the discharge block in the bottom of the metallurgical vessel. Since moreover the dividing plane between the interengaging sleeve extends horizontally, the rotary drive for rotating the drain out of the closure position into the opening position and vice versa can be constructed relatively simply.
An embodiment of the rotary closure according to the invention is illustrated in the drawings, which show:
Fig. 1 the rotary closure in longitudinal section, and Fig. 2 a plan view of the drain.
Inserted in the bottom of a metallurgical vessel (not shown) is a discharge block 1 having a vertically extending pouring channel 2. Inserted in the end portion of the discharge block 1 is a frustoconical discharge sleeve 3 containing a pouring channel 5 which extends at an inclination to the vertical axis 4 and discharges into a parallel portion 6 parallel with the vertical axis 4 of the pouring channel 2 and extending as far as end face 7 of the discharge sleeve 3. At its lower end the discharge sleeve 3 has a widened edge 8 which is partially let into the 2~27~
~ 5 -discharge block 1. The lower end of the discharge block 1 is reinforced by a metal ring 9.
An identically constructed sleeve 3a bears via its end face 7a against the lower face 7 of the discharge sleeve 3, so that the sleeves 3, 3a are identically laterally inverted in the incorporated state. The frustoconical sleeve 3a also has an inclined pouring channel 5a discharging at the end face 7a into a portion 6a axis-parallel with the vertical 4. The sleeve 3a is let into a drain 10, possibly an immersion drain. The drain 10 is reinforced at the outer periphery by a metal jacket 11 and has a pouring channel 12 coaxial with the pouring channel 2 in the discharge block 1. The inclined pouring channel 5, 5a in the sleeves 3, 3a discharge at one end into the pouring channel 2i 12 of the discharge block 1 and the drain 10 respectively. The opposite end portions 6, 6a of the pouring channels 5, 5a axis-parallel with the vertical 4 terminate at the end faces 7, 7a of the sleeves 3, 3a. In the position of the sleeves 3, 3a shown in Fig. 1 the pouring channel is separated at the contact faces 7, 7a, so that melt cannot flow out of the pouring channel 2 into the pouring channel 12. This is the position shown in continuous lines in Fig. 2. The openings of the end portions 6, 6a of the inclined pouring channels 5, 5a in the sleeves 3; 3a are laterally offset in relation to one another to such an extent that they cannot register with one another. End portions 6, 6a of the pouring channels 5, 5a in the sleeves 3, 3a can be moved into alignment by rotating the drain 10 around the vertical axis 4, whereby a melt is enabled to flow out through the pouring channel 2 and 5 in the discharge of the metallurgical vessel to 2~ ~527~
~h e pouring channel 5a and 12 in the drain. Other closure positions are shown in chain-dot lines in Fig. 2.
The drain 10 clamped via means which are not shown to the discharge block 1 or pressed thereagainst and is mounted to rotate around the vertical axis 4 in relation to the fixed discharge block 1.
Claims (4)
1. A rotary closure for opening and closing the discharge opening in a sleeve inserted in the discharge block in the bottom of a metallurgical vessel, comprising a drain disposed to rotate around a vertical axis in relation to the fixed discharge block and having an inserted sleeve which contains a pouring channel extending at an inclination therein and which completely or partially opens or closes the discharge opening in the discharge block in dependence on the rotated position of the drain, characterized in that inserted in the discharge block (1) and the drain (10) are identically constructed sleeves (3, 3a) which have pouring channels (5, 5a) extending at an inclination and which in the incorporated state bear identically laterally inverted against one another via their complementary horizontal end faces (7, 7a).
2. A rotary closure according to claim 1, characterized in that the sleeves (3, 3a) are frustoconical in shape and have a widened edge at their end faces (7, 7a).
3. A rotary closure according to claims 1 or 2, characterized in that the sleeves (3, 3a) are made of a highly refractory material which can also contain carbon.
4. A rotary closure according to one of claims 1 to 3, characterized in that opposite end portions (6, 6a) of the pouring channels (5a, 5a) extend vertically in the sleeves (3, 3a).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4231692.8 | 1992-09-22 | ||
| DE4231692A DE4231692C1 (en) | 1992-09-22 | 1992-09-22 | Twist lock for metallurgical vessels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2145279A1 true CA2145279A1 (en) | 1994-03-31 |
Family
ID=6468537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002145279A Abandoned CA2145279A1 (en) | 1992-09-22 | 1993-08-24 | Rotary closure for metallurgical vessels |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0662020B1 (en) |
| JP (1) | JPH08506272A (en) |
| KR (1) | KR950703420A (en) |
| AT (1) | ATE138836T1 (en) |
| CA (1) | CA2145279A1 (en) |
| CZ (1) | CZ71295A3 (en) |
| DE (2) | DE4231692C1 (en) |
| PL (1) | PL309568A1 (en) |
| RU (1) | RU95108758A (en) |
| WO (1) | WO1994006587A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9408018U1 (en) * | 1994-05-14 | 1994-09-01 | D.W. Schulte GmbH & Co. KG, 58840 Plettenberg | Perforated stone |
| DE19525917A1 (en) * | 1994-07-22 | 1996-01-25 | Mannesmann Ag | Twist lock for a metallurgical vessel |
| JPH08168872A (en) | 1994-07-22 | 1996-07-02 | Mannesmann Ag | Rotating closing device for tap hole in bottom surface of metallurgical vessle |
| KR100423442B1 (en) * | 1999-12-28 | 2004-03-19 | 주식회사 포스코 | Sliding gate device for continuous casting to prevent a bias flow |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1910247A1 (en) * | 1969-02-28 | 1970-09-10 | Neitzel Dipl Ing Martin | Device and method for pouring metallurgical melts and similar products |
| BE757219A (en) * | 1969-10-13 | 1971-03-16 | Interstop Ag | DISCHARGE DRAWER CLOSURE FOR METAL CASTING TANKS |
| GB1515922A (en) * | 1975-06-04 | 1978-06-28 | Danieli Off Mecc | Bottom pouring vessel with rotary sliding gate valve for molten metal |
| CH649149A5 (en) * | 1980-05-22 | 1985-04-30 | Stopinc Ag | TURNTABLE SLIDER FOR MELTING CASES. |
| JPH01143757A (en) * | 1986-12-20 | 1989-06-06 | Didier Werke Ag | Rotary sliding closing device for metallurgical vessel and body of revolution for such rotary sliding closing device |
| FR2631266B1 (en) * | 1988-05-13 | 1990-09-14 | Detalle Edouard | CASTING SHUTTER WITH LINEAR DISPLACEMENT AND AXIAL SYMMETRY |
| DE3843865C1 (en) * | 1988-12-23 | 1990-02-22 | Martin & Pagenstecher Gmbh, 5000 Koeln, De |
-
1992
- 1992-09-22 DE DE4231692A patent/DE4231692C1/en not_active Expired - Fee Related
-
1993
- 1993-08-24 WO PCT/EP1993/002265 patent/WO1994006587A1/en not_active Application Discontinuation
- 1993-08-24 EP EP93919148A patent/EP0662020B1/en not_active Expired - Lifetime
- 1993-08-24 KR KR1019950701113A patent/KR950703420A/en not_active Application Discontinuation
- 1993-08-24 CZ CZ95712A patent/CZ71295A3/en unknown
- 1993-08-24 PL PL93309568A patent/PL309568A1/en unknown
- 1993-08-24 RU RU95108758/02A patent/RU95108758A/en unknown
- 1993-08-24 CA CA002145279A patent/CA2145279A1/en not_active Abandoned
- 1993-08-24 JP JP6507734A patent/JPH08506272A/en active Pending
- 1993-08-24 DE DE59302842T patent/DE59302842D1/en not_active Expired - Fee Related
- 1993-08-24 AT AT93919148T patent/ATE138836T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE138836T1 (en) | 1996-06-15 |
| DE59302842D1 (en) | 1996-07-11 |
| DE4231692C1 (en) | 1994-03-24 |
| JPH08506272A (en) | 1996-07-09 |
| WO1994006587A1 (en) | 1994-03-31 |
| KR950703420A (en) | 1995-09-20 |
| RU95108758A (en) | 1997-01-27 |
| EP0662020A1 (en) | 1995-07-12 |
| PL309568A1 (en) | 1995-10-30 |
| EP0662020B1 (en) | 1996-06-05 |
| CZ71295A3 (en) | 1996-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |