KR100829815B1 - Apparatus for cleaning flange of electric furnace - Google Patents

Abstract

The present invention relates to a cleaning apparatus that can efficiently remove currents such as slag, scrap, and quicklime, which are accumulated on the furnace floor of a cooling water panel forming a furnace of an electric furnace. An accumulator tank for storing steam generated in a line, a steam motor driven by receiving steam from the accumulator tank, a chain connected to a reducer of the steam motor, and a chain connected to the reducer of the steam motor; And a guide rail for guiding the movement of the cleaner.

Basket, Furnace, Furnace, Slag, Scrap, Removal, Cleaning

Description

Furnace cleaning device {APPARATUS FOR CLEANING FLANGE OF ELECTRIC FURNACE}

1 is a plan view of an electric furnace for showing an installation state of the road cleaning device according to the present invention.

FIG. 2 shows a detailed configuration of means for driving the cleaner of FIG. 1. FIG.

3 and 4 are views for showing a state in which the cleaner of Figure 1 is installed.

5 is a view showing a connection relationship between the cleaner and the chain of FIG.

Explanation of symbols on the main parts of the drawings

10: electric furnace 12: roadside

14: guide rail 20,22: cleaner

24: steam motor 26: reducer

28: accumulator tank 40: reverse rotation switch lever

50: chain

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furnace cleaning apparatus for electric furnaces. More particularly, the present invention is a cleaning apparatus that can efficiently remove currents such as slag, scrap, and quicklime, which are accumulated in the furnace shells of cooling water panels forming furnace furnaces. It is about.

An electric furnace, one of the main facilities of the stainless steel making process, flows electrical energy to electrodes, steel, molten steel, steel, and electrodes to perform steelmaking work using arc heat generated from this, or to melt main and secondary materials. And a cooling water panel which normally forms a furnace of an electric furnace, and a charging device (hereinafter referred to as a basket) for transporting and charging raw materials and auxiliary materials such as scrap and ferroalloy in the electric furnace.

However, currents such as quicklime and scrap are accumulated in the upper portion of the cooling water panel (hereinafter referred to as the indentation) in the process of charging the main and subsidiary materials using the basket. Is not seated correctly and the equipment for fixing the loop is broken and deformed, thereby lowering the productivity.

In addition, if an arc occurs during operation with the loop, the coolant pipe of the loop leaks due to the arc, and the leaked coolant flows into the furnace by the arc, and the smoke is weathered with the coolant, thereby causing a large accident.

Due to these problems, the currents accumulated in the furnace must be removed. In the related art, the worker climbs the furnace to remove the current with a shovel, or the crane operator removes the basket from the tapping side, the exclusion side, the dust collecting side, and the operating room. It was removed using the bottom of the basket while moving to the back.

However, according to the current removal method of the above-described configuration, the worker can fall from the roadside and the risk of causing an industrial disaster is very high, and due to the excessive movement of the basket, the crane equipment breaks down and productivity decreases. There is this.

Accordingly, an object of the present invention is to provide a furnace cleaning device which can solve the above problems by automatically removing currents accumulated in the furnace furnace.

The present invention to achieve the above object,

An accumulator tank for storing steam generated in a cooling water supply line of a work tool door, a steam motor driven by receiving steam from the accumulator tank, a chain connected to a reducer of the steam motor, and a chain Provided is an electric furnace cleaning apparatus including a cleaner connected to remove currents accumulated in the furnace and a guide rail for guiding movement of the cleaner.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view of an electric furnace for showing the installation state of the furnace-type cleaning apparatus according to the present invention, Figure 2 is a view showing a detailed configuration of the means for driving the cleaner of Figure 1, Figures 3 and 4 FIG. 5 is a diagram illustrating a state in which a cleaner is installed, and FIG. 5 is a diagram illustrating a connection relationship between the cleaner and the chain of FIG. 1.

The guide rail 14 is installed to surround the electric furnace 10 at a position adjacent to the furnace angle 12 of the electric furnace 10, and the electric furnace 10 mainly around the work tool 16 and the tapping hole 18. The first cleaner 20 is installed in the guide rail 14 to the tap opening 18 side, and the second cleaner 22 is installed in the guide rail 14 toward the working tool 16 side. In the position adjacent to 16, a steam motor 24 and a reducer 26 are installed.

The steam motor 24 is connected to the accumulator tank 28 for storing steam generated by the door 16 ′ of the work tool 16 through a pipe 30, and the steam motor 24 and the accumulator tank 28 are connected to the accumulator tank 28. ), The solenoid valve 32 for controlling the steam supply is installed in the pipe (30) connecting, and the accumulator tank (28) connected to the door 16 'of the work tool (16) through the pipe (34) is a drain valve. 36 and the safety valve 38 are provided, and the reverse gear switch lever 40 which is contacted by the 1st cleaner 20 is provided in the reducer 26 of the steam motor 24. As shown in FIG.

3 to 5, the first and second cleaners 20 and 22 are installed on the guide rails 14 by the upper and lower rolls 42 and 44, and the upper and lower rolls 42 and 44. ) Are spaced at regular intervals to prevent interference with the guide rail 14 fixing bracket 14 '. In addition, each of the cleaners 20 and 22 is provided with a guide roller 46 in contact with the furnace 12 to smoothly transport the cleaner.

The brackets 48 of the first and second cleaners 20 and 22 installed as described above are engaged with the sprockets (not shown) of the reducer 26 and the sprockets 50 of the guide rail 14 to perform the caterpillar motion. 52 are respectively fixed. Therefore, when the steam motor 24 is driven, the first and second cleaners 20 and 22 are transferred in the counterclockwise direction in FIG. 1, and when the first cleaner 20 is in contact with the switch lever 40 for reverse rotation, the speed reducer is reduced. Reference numeral 26 is driven in reverse rotation to return to the original position shown in FIG.

And, the lower surface of the first and second cleaners (20, 22) is provided with a projection (54) in the operating direction so as to easily remove the current accumulated in the furnace.

In the above description, reference numeral 56 denotes a cooling water panel, and reference numeral 58 denotes a switch lever for blocking the solenoid valve 32.

Hereinafter, the operation of the cleaning apparatus configured as described above will be described.

If the solenoid valve 32 attached to the steam pipe 30 for operating the steam motor 24 is opened before the roof (not shown) is fully opened, the steam motor in which the steam stored in the accumulator tank 28 is driven by steam is opened. Supplied to 24. Accordingly, the steam motor 24 and the reducer 26 connected to the steam motor 24 are driven, and the chain 52 is rotated by the drive of the reducer 26 and the first and the first fixed to the chain 52. As the cleaners 20 and 22 move counterclockwise in FIG. 1, currents accumulated in the furnace angle 12 are removed.

Subsequently, when the first cleaner 20 contacts the reverse rotation switch lever 40 attached to the speed reducer 26, the speed reducer 26 reversely rotates, so that the first cleaner 20 taps the hot water outlet 18. ), And the second cleaner 22 moves to the work tool 16 side. And when the 2nd cleaner 22 moves to the standby position of the work tool 16 side, and contacts the switch lever 58 which closes the solenoid valve 32 of the steam pipe 30, it will supply from the accumulator tank 28. The steam is cut off and the operation of the steam motor 24 is stopped. Accordingly, the first and second cleaners 20 and 22 wait in the standby position until the next work.

In constructing the cleaning apparatus of the present invention described above, the accumulator tank 28 is preferably installed at the edge of the furnace beam to prevent cooling, and the first and second cleaners 20 and 22 are generated during operation. It is preferable to install at regular intervals from the furnace angle 12 so as to protect it from the high heat and the impact of charging the main and secondary raw materials.

As described above, according to the furnace cleaning apparatus according to the present invention, the steam is produced using the high heat generated during the oxygen blowing operation and the arcing operation, and the steam motor is used to drive the cleaner before the raw material charging operation. Eliminate currents to improve work efficiency and prevent disasters by reducing worker workload, and ensure good grounding of the inlet and loops to improve productivity and reduce maintenance costs by preventing coolant leakage due to arcing have.

In addition, since the crane does not need to be removed now, it is possible to obtain an effect that can contribute to productivity improvement by eliminating the failure factor of the crane facility.

Claims (3)

A guide rail installed along the outside of the electric furnace, A chain installed on the guide rail, Cleaners that are connected to the chain and move along the guide rail to remove currents accumulated in the furnace's furnace; A reducer connected to the chain to rotate the chain; A steam motor connected to the reducer to drive the reducer; Accumulator tank for supplying steam to the steam motor Furnace cleaning apparatus of a furnace comprising a. The method of claim 1, And said cleaners are respectively provided on the working side and the tapping side of the electric furnace. The method of claim 2, And a reverse rotation switch installed in the speed reducer and configured to reversely rotate the speed reducer through contact with one of the cleaners.

Images