CN209243086U - The device of the quick handling cleaning cupola well of overhaul 2500m3 blast furnace - Google Patents

Abstract

The utility model discloses a device for overhauling a ^2500m3 blast furnace by quickly hoisting and clearing the hearth, which comprises a large manhole set on the top of the blast furnace and a large tuyere set on the upper furnace wall of the furnace hearth, and is placed outside the ^2500m3 blast furnace A gate-shaped bracket is installed, and an electric hoist is installed on the crossbeam of the gate-shaped bracket. On the 41-meter-high platform outside the blast furnace, the excavator with the boom removed is hoisted by the electric hoist, and the excavator is lifted from the blast furnace. The hole is hoisted into the blast furnace, and the folding belt conveyor is inserted into the blast furnace from the tuyere after the large tuyere cover is removed from the blast furnace. On the transport vehicle outside the blast furnace. The utility model has a reasonable structure, adopts mechanized operation, and quickly lifts and cleans the hearth of the blast furnace, which can reduce the labor intensity of workers and improve work efficiency.

Description

The Device for Overhauling 2500m3 Blast Furnace Quickly Lifting and Cleaning Hearth

technical field

The utility model belongs to a device for reducing the load of a heat-resistant bucket elevator, in particular to a device for overhauling a 2500m ³ blast furnace by quickly hoisting and clearing a hearth.

Background technique

When the blast furnace will start to be overhauled, the main work will be the replacement of 2 staves. After the blast furnace is shut down, it is necessary to clean up the residual coke and residual slag iron in the hearth. Before cleaning, the coke and residual slag iron must be treated with water and cooled to make them suitable for entry.

Traditionally, the monorail electric crane is used, and the electric chain hoist is connected under it. The length of the wire rope of the electric chain hoist is 30 meters, so that the total length of the hoisting equipment reaches 50 meters, which basically meets the needs of hoisting the excavator into the furnace. However, the transmission of the chain link is not stable, and the impact resistance is low. Under the action of the impact force, it may break suddenly, and the safety and reliability are not as good as the steel wire rope. In the lifting operation, it is necessary to make a spreader and a binding excavator, and the safety requirements for the binding excavator are relatively high. During use, the electric chain hoist is stuck, and the chain and the components directly connected to it are deformed, worn and other abnormal conditions. It took a long time to deal with the failure of the electric chain, coupled with the slow lifting speed of the electric chain, it took up to 8 hours to hoist the excavator into the furnace, which delayed the cleaning of the hearth.

Utility model content

The purpose of this utility model is to provide a device for overhauling a 2500m ³ blast furnace and quickly lifting and clearing the hearth. It has a reasonable structure and adopts mechanized operations to quickly lift and clean the hearth of the blast furnace, which can reduce the labor intensity of workers and improve work efficiency.

The purpose of this utility model is achieved in the following way: a device for overhauling a 2500m ³ blast furnace to quickly lift and clean the hearth, including a large manhole set on the top of the blast furnace and a large tuyere set on the upper furnace wall of the hearth. The 2500m ³ blast furnace is equipped with a gate-shaped bracket outside, and an electric winch is installed on the crossbeam of the gate-shaped bracket. Hoist from the generous manhole of the blast furnace into the blast furnace, extend the folding belt conveyor into the blast furnace wall hole after removing the large tuyere cover of the blast furnace, and excavate the accumulated material in the hearth of the blast furnace into the hopper of the folding belt conveyor , transported by the folding belt conveyor to the transport vehicle outside the blast furnace.

The utility model uses an excavator to cooperate with a folding belt to clean the furnace hearth. The specific method is: hoist a small excavator from the furnace top into the material surface in the furnace, and after the completion of the furnace top, the large manhole and the small manhole are equipped with grids. Set up a belt conveyor with a length of 500-600mm and about 15m at the tuyere, and install a belt alarm bell and a hopper to transport the residual slag iron and coke that have been cleaned up. Use an excavator in the furnace to clean up and use a belt conveyor The charge is poured out of the furnace. After dismantling the boom of the excavator on the 41-meter platform, the excavator is transported to the furnace from the Dafang manhole, and the folded belt is inserted into the furnace through the hole after the large cover is removed, and the excavator will deposit the material in the furnace It is dug onto a belt and transported to a car outside the furnace.

The utility model has a reasonable structure, adopts mechanized operation, and quickly lifts and cleans the hearth of the blast furnace, which can reduce the labor intensity of workers and improve work efficiency.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings. Fig. 1 is a structural schematic diagram of the utility model hoisted into a blast furnace from a large manhole, and Fig. 2 is a structural schematic diagram of the utility model with an excavator and a folding belt conveyor.

Detailed ways

A device for overhauling a 2500m ³ blast furnace and quickly hoisting and clearing the hearth, as shown in Figure 1 and Figure 2, includes a generous manhole on the top of the blast furnace and a large tuyere set on the furnace wall above the hearth. ³ A gate-shaped support 2 is installed outside the blast furnace 1, and an electric winch 3 is installed on the crossbeam of the gate-shaped support 2. On the 41-meter-high platform 4 set outside the blast furnace 1, the excavator 6 for removing the boom passes through the electric winch 3 Hoisting, lift the excavator 6 from the generous manhole 5 of the blast furnace into the blast furnace 1, extend the folding belt conveyor 7 into the blast furnace 1 from the tuyere after removing the large tuyere set of the blast furnace, and the excavator 6 will lift the blast furnace The accumulated material 8 in the cylinder is dug into the hopper of the folding belt conveyor 9, and is transported to the transport vehicle 10 outside the blast furnace 1 by the folding belt conveyor 7.

Claims (1)

1. A device for overhauling a 2500m ³ blast furnace to quickly lift and clear the hearth, comprising a large manhole set on the top of the blast furnace and a large tuyere set on the furnace wall at the top of the hearth, characterized in that: in the 2500m ³ blast furnace ( 1) is equipped with a gate-shaped bracket (2), and an electric winch (3) is installed on the beam of the gate-shaped bracket (2), and the 41-meter-high platform (4) set outside the blast furnace (1) will be dismantled The excavator (6) of the boom is hoisted by the electric hoist (3), the excavator (6) is hoisted from the generous manhole (5) of the blast furnace into the blast furnace (1), and the folding belt conveyor (7) is lifted from the After removing the large set of tuyeres from the blast furnace, the tuyeres extend into the blast furnace (1), and the excavator (6) digs the accumulated material (8) in the hearth of the blast furnace into the hopper of the folding belt conveyor (9), and the folding belt conveyor (7) Be transported on the transport vehicle (10) outside blast furnace (1).