SU602762A1 - Device for repair of steel-making furnace escape hole - Google Patents

Description

(54) DEVICE FOR REPAIRING THE EXHAUST OPENING OF A STEEL FURNACE

mechanism for pressing the device to the wall of the steelmaking furnace.

FIG. 1 shows the device in plan in the working position; in fig. 2, section A-A in FIG. 1 in the working position of the device without a section of the hollow core; in fig. 3 shows section A-A in FIG. 1 hollow core; in fig. FIG. 4 shows a section in FIG. 3 in FIG. 5 shows a section B-B in FIG. 3

The device is removable and consists of a carriage 1 with a beam 2, which is used to install a carriage on the brackets 3 of the working platform 4 of the open-hearth furnace 5, and with guides 6 for moving the carcass hopper 7 for the refractory mass, which is a cylinder 8 with a transitional branch pipe 9, a guide nose 10 and a refractory mass feeding mechanism consisting of a piston 11, a screw 12, a gearbox 13 and an electric motor 14,

The sock 10 of the hopper 7 is made with an emphasis 15 and a hollow core 16, at the end of which a removable plug 17 is installed. Inside the core there is a mechanism 18 for fixing the final 17, consisting of clamps 19, shackles 20, stem 21 and lever 22,

To insert the core into the hole being repaired and ensure that the stop 15 is in close contact with the furnace wall, the carriage 1 has a pressing mechanism 23, contents 5IIT 24, mounted in the bearings 25 of the mast 1, a nut 26 fixed to the hopper 7, and an actuator 27.

The carriage 1 has pins 28, which the device is attached to the hooks 29 for repair time, intended for installation of a drainage chute.

The device works as follows. At the site of preparation of the device for operation at the initial position of POLESON 11, the capacity of the cylinder 8 is filled with a refractory mass, and a removable plug 17 is put on the core 16.

Under the action of 22 mechanisms 18 of fixation through the rod 21 and of the earrings 20, the clips 19 move apart, which results in aa | {detachment of the removable plug 17 on the core 16.

A crane prepared for operation, the device is fed to the working and barrel platform 4 of the open-hearth furnace 5. The carriage 1 with a roll 2 is mounted on the brackets 3, and the pins 28 on the hooks 29.

When the actuator 27 is turned on, the screw 24 begins to rotate, which through the nut 26 moves the hopper 7 along the guides of the gun 1 to the working position until the stop 15 is firmly pressed into the wall of the open-hearth furnace 5,

After that, the motor 14 is turned on, which, through the gearbox 13 and the screw 12, moves the piston 11, the latter displaces the refractory mass from the cylinder 8, which through the toe 10 fills the volume bounded by the core 16, the stop 15, the removable cap 17 and the surface of the worn out steel outlet. The presence of the clamping mechanism 23 and the plug 17 provides the necessary density of the refractory mass. Upon completion of filling the volume of the hole being repaired

refractory mass and its seals release the removable plug, affecting the lever 22 of the fixing mechanism 18, the Drive 27 returns the hopper 7 to

the initial position, while the plug 17 remains in the steel hole. The crane is removed from work site 4 and transported to the preparation site.

it to track repair.

The use of the proposed device allows high-quality repair of the steel outlet and reduces the time spent on repairs.

Claims (2)

1. Shrenko N, S, Mechanical equipment of blast furnaces, M., 1962, p. 384-388. 2.Patent UK 1180800, cl. F 4 B, 1970. S-6 SS 4 Aa No I t 8-8 but