SU1735694A1 - Device for spray-guniting of metallurgical units - Google Patents

Abstract

Use: repair of the lining of metallurgical units by gunning. SUMMARY OF THE INVENTION: The device contains a gunning tuyere, mechanisms for its rotation and movement, and a pneumatic transport system for supplying the gunning mass with a double-arm lever hinged on the trolley, at one end of which a counterweight is placed, and at the other end there are flexible hoses for supplying gunning mass and energy , and a flexible element connected to the ring attached to the working platform. 2 Il.

Description

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The invention relates to the field of metallurgy, in particular to the mechanization of repair work in steelmaking.

A device for supplying energy to a lance is known, comprising a guide with a carriage and a mechanism for vertical movement of the carriage, a lance with a collector fixed to the carriage, stationary pipelines for supplying energy carriers and a quick-release connection to the drive clamps for connecting the stationary pipelines to the tuyere collector,

However, the device does not provide energy supply to the tuyere, which needs to be given a reciprocating motion to carry out the gunning process of metallurgical units, since the connection of the tuyere collector with stationary pipelines in the device is made in a strictly fixed position of the tuyere.

It is also known a device for the gunning of a converter, consisting of gunning burners, a mechanism for moving a mast-mounted manipulator mounted on rollers on a support frame with movable supports, and a pneumatic conveying system for torque-mass

In the known device, the gunning mass and energy carriers are supplied to the gunning gun manifold using flexible hoses passing through openings in the working platform, which leads to increased wear and tear of the hoses during operation of the known device.

The aim of the invention is to increase reliability.

A device for torch gunning of metallurgical aggregates by supplying XI

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but a two-arm lever hinged on a trolley, on one shoulder are flexible sleeves for supplying gunning mass and energy carriers and a flexible element connected to a ring fixed on the working platform.

Figure 1 shows the device, a general view; on fng-, 2 - view A in figure 1.

The device for torch gunning of metallurgical units contains gunning lance 1 fixed in the supports of the rotation mechanism 2 mounted on the drive carriage 3, as well as the pneumatic transport system 4 of the gunning mass supply and two shoulders lever 5 hinged on the carriage 3 using axis 6 , On one arm of the lever 5, a counterweight 7 is fixed, and on the other side are flexible sleeves 8, which serve to supply shotcrete mass, oxygen and water to the tuyere collector 9. The tuyere collector 9 is connected through a sealing system with a tuyere 1. The upper end of the lever 5 is connected by means of a flexible element 10 to a ring 11 fixed on the working platform. The trolley 3 is provided with a power supply device 12.

A device for torch gunning of metallurgical units operates as follows.

The device is driven by a trolley 3 to a metallurgical unit, for example, to a converter. Flexible hoses 8 that serve for supplying the shotcrete mass, oxygen and supplying or discharging cooling water to the tuyere collector 9 of gunning mill 1 are connected to the respective stationary pipelines, and the flexible element 10 is attached to the ring 11 with a hook at its free end. Then turn on the supply of cooling water and the lance 1 by means of the trolley 3 is introduced into the cavity of the unit. After that include the supply of guncrete mass and oxygen. The shotcrete tuyere 1 by means of the rotation mechanism 2 and the carriage 3 imparts rotational and reciprocating movements and produces torch shotcrete of the refractory lining of the metallurgical unit. As the device advances forward, the lever 5, connected by the upper end with

the flexible element 10c with the ring 11 is deflected backward, rotating around the axis 6. In this case, the sleeves 8 are laid on the floor of the working platform without being pulled along its surface. During the course of the backward movement, the lever 5, turning around the axis 6 under the influence of the counterweight 7, returns to its initial position, while raising the sleeves also without pulling them along the surface of the floor of the working platform.

When the lever 5 deviates from the initial position by an angle corresponding to sufficient movement of the carriage 3 forward, the counterweight 7 comes into contact with one of the two end

switches, switching the drive of the trolley 3 to the reverse. Similarly, the direction of movement of the carriage 3 is switched when the lever 5 returns to its original position.

After finishing the process of gunning of the lining, turn off the rotation of the sprayed tuyere 1, supply of the sprayed mass and energy carriers and disconnect the sleeves 8 from the corresponding stationary pipelines. After that, the flexible element 10 is detached from the ring 11 and the device is withdrawn from the metallurgical unit with the help of the carriage 3.

The use of the device for flare

gunning of metallurgical units allows to increase the reliability and safety of the device operation, to increase the service life of flexible hoses, to reduce the likelihood of emergency shutdowns associated

with wear and tear of the sleeves.

Claims (1)

Apparatus of the Invention Apparatus for torch gunning of metallurgical aggregates, comprising a gunning tuyere and a mechanism for its movement, rotation, mounted on a drive carriage installed on a working platform, a pneumatic conveying system for gunning mass, characterized in that it is hinged to increase reliability mounted on a trolley with a double-arm lever, on one shoulder of which a counterweight is placed, and on the other - flexible hoses for supplying gunning mass and energy carriers and a flexible element connected with a ring fixed on the working platform.