SU1177635A1 - Unit for fixing graphite electrode of ore-smelting electric furnace - Google Patents

Abstract

NODE FASTENING GRAPHITE ELECTRODE ore-smelting ovens, soderzhapschy upper and lower clamping rings supporting cylinder, a ring with contact jaws, movable yoke with gidroplunzherami electrodes movement mechanism of t lichayuschiys in that, for the purpose of improving the reliability by reducing the breakage of the electrodes, it is provided with a spherical heel fixed to the lower clamping ring and a binnacle in contact with it through the rolling slit, fixedly mounted on the traverse of the electrode moving mechanism, and water cooled E spring loaded retainers arranged on the carrier cylinder radially relative to the electrode, and the upper clamp ring is mounted for limited horizontal movement.

Description

VI M

0 with SL

eleven

The invention is related to metallurgy and can be used in ore-thermal electric furnaces.

The purpose of the invention is to increase reliability by reducing electrode breakages.

On. The drawing shows the device, a general view.

The device adopts the electrode 1, passing through the upper clamping ring 2, resting on the horizontal movable platform 3 and the lower clamping ring 4, which is rigidly connected to the spherical heel 5,. resting through the rolling bodies 6 on the bolster 7 rigidly fixed on the traverse of the mechanism 8 for moving the electrode. A supporting cylinder 10 (mantel) passing through guide rollers 11, to which cylindrical nozzle and 12 are connected with radially movable rods 13 and springs 14, is rigidly attached to the yoke 9. The rods 13 are pivotally connected to water-cooled lugs 15. To the mantelle 10 on tons of attached ring 16 with contact cheeks 17.

The device works as follows.

Before the start of melting, the electrodes are installed. The upper clamping ring expands and the electrode t by means of a spherical heel 5 and the rolling bodies 6 on the spherical bolster 7 under the action of its own weight is set strictly vertically relative to the supporting cylinder 10. Before this, the stops 15 are pressed from the electrode 1 by forcibly compressing the spring 14 ( the mechanism for adjusting the spring is not shown). 14 effect on radial displacement76352

Now the rods 13, which move the water-cooled supports 15, which are hinged to them, during the installation of the electrode, the upper end 5 of the electrode 1 moves on a horizontally movable platform 3 in the right direction, self-aligning on the pad 7 with respect to the vertical axis. The ring 16 with contact cheeks 17 is in the decompressed state and, since it is suspended from the carrier cylinder 10, it has practically no effect on the self-alignment of the electrode. Installing the upper clamping ring 2 on the horizontally movable platform 3, and the lower clamping ring 4 on the spherical seal 5 supported through the rolling bodies 6 on the bolster 7, eliminates arbitrary distortions of the electrode when it is vertically moved by the mechanism 8 for moving the electrode, which reduces the bending stress. During the smelting process, the electrode deviates by a certain angle relative to the vertical axis under the influence of the electrodynamic or resistance forces of the charge on its lower end, which eliminates the sudden application of load (the springs of the stops are compressed). Then, reactions of counteraction to horizontal forces at the end of the electrode occur in the zone of the water-cooled lugs 15 located at a distance of 2.0–3 m from the lower end of the electrode. As a result, the bending moments in the electrode are significantly reduced, the bending stresses become lower than allowed, which prevents the electrode from damage, and the presence of water-cooled stops prevents the electrode from spontaneous bypass.

Claims (1)

ORE-THERMAL ELECTRODE FIXING ANNOUNCEMENT ASSEMBLY TRIPEKI, containing the upper and lower clamping rings, the bearing cylinder, the ring with contact cheeks, the movable traverse with hydraulic plungers of the electrode movement mechanism, characterized in that, in order to increase reliability by reducing breakdowns of the electrodes, it is equipped with a spherical heel fixed to the lower clamping ring and a thrust bearing in contact with it through the rocking slit fixedly mounted on the traverse of the electrode movement mechanism, and water-cooled spring-loaded clamps placed on the carrier cylinder p dially relative to the electrode, and the upper clamp ring is mounted for limited horizontal movement.