JPS6236059Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a dust collector installed in an electric furnace, and in particular to a hood that collects soot and smoke generated from the electric furnace around the inner electrode. The present invention relates to a dust collector having a dust collector.

[Conventional technology]

Generally, a dust collector installed in an electric furnace has a configuration as shown in FIG. That is, a working hood 2 is provided at the working opening of the electric furnace 1, and a dust collector 4 is connected to the working opening hood 2 via a duct 3. The dust collector 4 removes dust from the dust-containing air taken in through the duct 3 and exhausts the air to the outside using the exhaust fan 5. on the other hand,
The electric furnace 1 heats objects inside the furnace using electricity, and is provided with a plurality of electrodes 6. A relatively high voltage is applied to this electrode. An electrode hood 7 is provided around the electrode 6. This electrode-around hood 7 conventionally had a configuration as shown in FIG. That is, the electrode 6 is provided to penetrate the upper plate 7A of the electrode-around hood 7, and the lower plate 7B of the electrode-around hood 7 is provided up to the vicinity of the electrode 6. Further, one end of the electrode-around hood 7 is open to form an open portion 8. The structure is such that the drawn-in air 10 is drawn in through this open opening 8. A predetermined gap is provided between the electrode hood 7 and the electrode 6, and the electrode 6 is inserted into the electrode hood 7 through this gap.
and the electric furnace casing 11.
It is configured to suck in the air together with the entrained air 10.

[Problem that the invention attempts to solve]

However, such conventional electrode hoods have poor smoke collection effects because they do not completely surround the electrodes, and if they are provided for each electrode, the suction ducts will be clogged and pressure loss will be large. Was.

Further, in an electric furnace, the amount of smoke discharged from around each electrode varies depending on the structure of the electric furnace. In addition, electric furnaces for steelmaking differ in the amount of dust generated and the amount of air discharged during the melting, acid blowing, reduction, and finishing processes. If the amount of suction air around each electrode is made constant, the suction around the electrodes located far from the suction duct will be weaker, resulting in insufficient smoke collection.

An object of the present invention is to provide a dust collector that can improve the smoke collection effect.

[Means for solving problems]

The present invention provides a dust collector that is installed in an electric furnace and that sucks in and treats the medium dust generated from the electric furnace through a duct. It is characterized in that it is divided into chambers for each electrode via a partition plate, each chamber is provided with a valve for regulating the amount of smoke exhaust, and each chamber is connected to a duct.

〔Example〕

Examples of the present invention will be described below.

3 and 4 show an embodiment of the present invention.

In the figure, a hood 23 is provided around the electrodes 20, 21, 22, as shown in FIG. This hood 23 is integrally constructed,
It is composed of an upper plate 27, a lower plate 28, and left and right side plates 33 and 34. The inside of this hood 23 has partition plates 24 and 2 corresponding to each electrode 20, 21, and 22.
5 into three chambers, and valves 29A, 29B, and 29C are provided near the outlet of each chamber, respectively. A single duct 40 is connected downstream of the valves 29A, 29B, and 29C.
Further, a closing plate 35 is provided on the upper plate 27 of the hood 23. The electrodes 20, 21, 22 and the lower plate 28 of the hood 23 have a gap, and this gap traps the dust 31 coming out from the gap between the electrodes 20, 21, 22 and the electric furnace casing 30. This is for drawing air 32 into the hood 23.

According to the embodiment, the hood 23 has each electrode 20,
21 and 22 are divided into three chambers by partition plates 24 and 25, and each chamber has a valve 29 for regulating the amount of smoke exhaust.
A, 29B, and 29C are provided. Therefore,
Even if the amount of smoke emitted from around each electrode is different,
By changing the opening degrees of the valves 29A, 29B, and 29C, the amount of smoke exhaust can be determined according to the amount of ejection.

According to this embodiment, by providing the closing plate 35, the suction points are limited and the smoke collection effect can be improved.

[Effect of idea]

As explained above, according to the present invention, a hood is provided for each electrode, and the inside of the hood is divided for each electrode, so that smoke can be collected efficiently.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the connection relationship between a dust collector and an electric furnace, and Figure 2 is a diagram showing the components of the smoke collection section of a conventional dust collector,
FIG. 3 is a sectional view showing an embodiment of the present invention, and FIG. 4 is a plan view of the embodiment shown in FIG. 20, 21, 22...electrode, 23...hood,
24, 25... partition plate, 35... closing plate.

Claims (1)

[Scope of utility model registration request] In a dust collector that is installed in an electric furnace and sucks in and processes dust generated from the electric furnace through a duct, a hood that covers each electrode of the electric furnace is integrally provided, and a partition plate is installed inside the hood. 1. A dust collector characterized in that the dust collector is divided into chambers for each electrode through the filter, each chamber is provided with a valve for regulating the amount of smoke exhaust, and each chamber is connected to a duct.