SU1435919A1 - Chute for treating and discharging metal from melting furnace - Google Patents

Abstract

The invention relates to metallurgy, namely, to devices used for treating a liquid metal in the process of discharging it from a Hoi smelt; o unit. The purpose of the invention is to simplify the service conditions of the gutter upon the introduction of the alloying elements. The chute contains a rotating drum mounted on axes 6 and 7, rigidly connected to the trigger wheel 13, and an anchor fork equipped with an actuator 20. Preparation of the alloying element suspended on a flexible link as the anchor fork is transferred from one position to another under its own weight periodic pulses are lowered into the chute. 2 Il. 2Q 18 i (L 00 SP with QO

Description

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The invention relates to metallurgy, in particular, to devices used for treating a liquid metal in the process of discharging it from a smelting unit.

The aim of the invention is to simplify the conditions of service of the gutter when alloying is introduced into it.

Fig, 1 shows the proposed Q chute, a general view with a digging hole; in fig. 2 - the same, side view. The gutter consists of a lined hood 1 with a threshold 2 on the discharge part

(the angle of rotation of the threshold to the longitudinal axis 5 is not shown), on the plug 3, which is shaped by the walls 4 and 5 of the casing 1, the axes 6 and 7 are fixed, on the axis 6 the rotating drum 8 (sleeve) is mounted, on which Sprockets 9 20 and 10 of different diameters are fixed, chain 11 with a gripping device 12 (hook) fixed on its end 9 is thrown onto sprocket 9. The drum 8 is rigidly connected to a coaxial trigger wheel 13. On axis 25, an anchor fork 14 is mounted with pallet 15 and 16, which is engaged with pallet 15 with tooth 17 of the trigger wheel 13 and pallet 16, which rises above the teeth of the trigger wheel (shown above the tooth 18). The anchor plug 14 is rigidly connected to the control knob 19, which is in turn connected pivotally to the rod actuator 20 mounted on the walls

casing 1.

The control knob 19 is provided with a return mechanism, for example, a spring 21, and on the gripping device 12 a workpiece 22 (billet, casting, etc.) of the alloying material is suspended. The chute works as follows.

Before the metal is poured from the furnace, chain 11 is thrown onto one of the sprockets 9 or 10, depending on the supply required (instead of a chain, a cable can be wound on the drum 8 and secured against slipping, for example, by friction turns). The gripping device 12 is suspended with a blank 22 of the alloying element, for example, a lead of any length. Under the weight of the pig, the drum is turned up to the stop by a tooth 17 of the trigger wheel 13 into the pallet 15 of the anchor fork 14 held in the extreme position by the spring 21. In the desired period of metal release, the handle 19 is manually raised along the groove

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a time or this work is done by the rod drive 20 from the control unit. When the handle 19 is raised upward, the anchor fork 14 occupies the second extreme position, withdrawing the pallet 15 from engagement with the tooth 17 and simultaneously lowering the pallet 16. The tooth 17 that has come out of engagement under the weight of the workpiece 22 will turn the trigger wheel and the drum with sprockets up to the stop with a tooth 18 in the pallet 16, when lowering the handle 19 of the pallet 16, will release the tooth 18 of the trigger wheel, and the pallet 15 will allow the trigger wheel to turn as far as it will go to the tooth that follows tooth 17 (not indicated).

For lifting the handle, one cycle of insertion of the alloying element occurs, consisting of two pulses, corresponding to lifting and lowering the handle.

The introduction of the required amount of the alloying element is controlled by the number of cycles (or pulses) of the handle 19. The linear amount of the alloying element feed depends on the diameter of the feed sprocket 9, 10 (or the diameter of the drum 8 when using a cable) and is calculated by the known dependencies (feed per cycle is determined by dividing the length of the circle of winding or long circle by the number of teeth of the trigger wheel).

The alloying element introduced into the chute is eroded by a stream of metal arranged in the chute and, as it passes through the chute, is mixed with it. Threshold 2 contributes to more efficient mixing. The length of the suspended billet can be chosen in accordance with a changeable, daily, etc. the required amount of alloying elements.

The application of the proposed trough allows the use of whole alloying ingots without crushing them, eliminates manual labor, provides better mixing of lead in the melt,

Claims (1)

Invention Formula Chute for processing and discharging metal from a smelting furnace, containing a metal lined casing with side walls and a threshold at the discharge part, made at an angle of 3 1-89 to the longitudinal axis of the groove, which, in order to simplify maintenance when inserting alloying elements, is provided with two axes mounted on a fork formed by the side walls of the casing, a drum placed on one of the axes with the possibility of four and attached to it by a flexible element, the drum being provided with a wheel with teeth, an anchor fork placed with the possibility of engagement with the teeth of the wheel, and a drive located on the side walls of the casing and connected with it by an anchor fork.