Smoke elbow for electric furnace |
|||||||
| 申请号 | US3772448D | 申请日 | 1973-02-05 | 公开(公告)号 | US3772448A | 公开(公告)日 | 1973-11-13 |
| 申请人 | LACLEDE STEEL CO; | 发明人 | BOWERMASTER R; BECKER R; | ||||
| 摘要 | A tiltable electric furnace comprising an open-top chamber and a roof adapted to be lifted off the top of the chamber and movable between an operating position in which it is at least partially clear of the chamber for charging said chamber from the top. The roof has a smoke outlet for discharge of gases from within said chamber when the furnace is in operation with the roof in its operating position. A smoke elbow is provided for conducting gases from the smoke outlet in the roof to a duct, the elbow being mounted independently of the roof for movement relative to the chamber between an operating position wherein its inlet end is in communication with said smoke outlet for conducting gases from the outlet to the duct, and a retracted position wherein its inlet end is clear of the roof for movement of the roof to its said retracted position, the duct being movable between an operating position wherein its inlet end is engaged with the outlet end of the elbow when the elbos is elbow its operating position, and a retracted position wherein its outlet end is clear of the elbow for movement of the elbow to its said retracted position. | ||||||
| 权利要求 | 1. An electric furnace comprising an open-top chamber, a roof movable between an operating position covering the chamber and a charging position in which it is at least partially clear of the chamber for charging said chamber from the top, said roof having a smoke outlet for discharge of gases from within said chamber when the furnace is in operation with the roof in its operating position, a duct for carrying away the gases, said duct having an inlet end, a smoke elbow for conducting gases from the smoke outlet in the roof to the duct, said elbow having one end constituting its inlet end and its other end constituting its outlet end, means mounting said elbow independently of the roof for movement relative to said chamber between an operating position wherein its iNlet end is in communication with said smoke outlet for conducting gases from the outlet to the duct, and a retracted position wherein its inlet end is clear of the roof for movement of the roof to its said retracted position, said duct being movable between an operating position wherein its inlet end is engaged with the outlet end of the elbow when the elbow is in its operating position, and a retracted position wherein its outlet end is clear of the elbow for movement of the elbow to its said retracted position. 2. An electric furnace as set forth in claim 1 wherein said elbow mounting means carries the elbow for swinging movement about a generally horizontal axis offset from and extending transversely of the elbow. 3. An electric furnace as set forth in claim 2 wherein the duct has its inlet end movable generally horizontally toward and away from the outlet end of the elbow. 4. An electric furnace as set forth in claim 3 wherein the inlet end of the duct is beveled to open downward and the outlet end of the elbow is beveled to open in upward direction when engaged by the inlet end of the duct. 5. An electric furnace as set forth in claim 1 wherein said chamber is mounted on a support, and said elbow mounting means comprises an elbow supporting means mounted on the support and means mounting the elbow for swinging movement on said elbow supporting means about a generally horizontal axis offset from and extending transversely of the elbow. 6. An electric furnace as set forth in claim 5 wherein the duct has its inlet end movable generally horizontally toward and away from the outlet end of the elbow, and wherein the inlet end of the duct is beveled to open downward and the outlet end of the elbow is beveled to open in upward direction when engaged by the inlet end of the duct. 7. An electric furnace as set forth in claim 5 wherein said support comprises a platform mounted for tilting movement to tilt said chamber for tapping and slagging, said elbow being movable with said platform and chamber as they tilt and swingable on its said horizontal axis relative to said chamber and platform. 8. An electric furnace as set forth in claim 7 having means for swinging the roof laterally relative to the chamber about a swing axis on one side of the chamber between its said operating and retracted positions when said elbow is clear of the roof. 9. An electric furnace as set forth in claim 8 wherein the said roof is also movable upwardly away from and downwardly toward said chamber, and wherein the pivotal axis of the elbow is located for the elbow to be clear of the roof when the roof is raised. 10. An electric furnace as set forth in claim 9 wherein said elbow mounting means comprises a pivot support extending up from the platform on the side of the chamber opposite the swing axis of the roof, the elbow being pivoted at the upper end of said pivot support. 11. An electric furnace as set forth in claim 10 wherein the elbow is pivoted at the upper end of said pivot support in such manner that the inlet end of the elbow extends down toward the roof and its outlet end is aligned with the duct when the elbow is in its operating position. 12. An electric furnace as set forth in claim 11 having means for water-cooling the elbow including piping having swivel connections in line with the pivotal axis of the elbow. 13. An electric furnace as set forth in claim 11 having hydraulic cylinder means interposed between the platform and elbow for swinging the latter. |
||||||
| 说明书全文 | |||||||
QQ群二维码
意见反馈
意见反馈