JPH06174Y2 - Smoke exhaust device for rolling mill - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a smoke exhaust device for a rolling mill, and more particularly to a smoke exhaust device for a rolling mill used in a reversible cold strip rolling mill.

[Conventional technology]

FIG. 2 is an explanatory view when a conventional smoke exhaust device for a rolling mill is used in a reversible cold strip rolling mill. In the figure, the steel plate 50 is composed of two coils 52 on the left and right sides of the guide roller 5.
It is stretched so as to be sandwiched by rolling rollers 56, 56 of a reversible cold strip rolling mill 54 via 3, 53. Then, at the time of rolling, the rolling roller 56 repeats rolling several times while applying the lubricating oil to the steel plate 50 to reduce the thickness to a predetermined thickness. Therefore, the steel plate 50 becomes high in temperature due to deformation and friction, and the lubricating oil attached to the steel plate 50 evaporates to become fumes 57 and float in the air. Since this hume 57 has a small particle size and floats in the air for a long time, it has reduced the visibility and deteriorated the working environment. Therefore, a smoke exhaust device for a rolling mill is provided to collect the fumes 57.

In the conventional smoke exhaust device for a rolling mill, a hood 58 is provided above the reversible cold strip rolling mill 54, and the fumes 57 are exhausted by the hood 58. On the other hand, the coil 52
A paper roll 60 for sending out paper for absorbing the lubricating oil applied to the steel plate 50 during rolling is installed above the paper roll, and the paper roll 60 is replaced by a crane 62 installed above. The hood 58 was connected to the fume separator 66 and the blower 68 via the duct 64, and the fume 57 collected from the hood 62 was captured by the fume separator 66.

[Problems to be solved by the invention]

However, above the paper roll 60 of the smoke exhaust device, a moving space for the crane 62 for carrying out the replacement work of the paper roll 60 is required, and other equipment or the like cannot be installed. Therefore, the hood 58 has to be installed at a position closer to the rolling mill 54 than the position of the paper roll 60, and the source of the fume 57 cannot be completely covered. That is, the diffused fume 57
It is difficult to improve the visibility and work environment beyond a certain limit because the smoke cannot be completely exhausted.

The present invention has been made in view of such circumstances, and in order to improve the deterioration of the working environment due to a fume and to carry out an efficient rolling operation, the fumes generated can be completely smoke-exhausted. An object is to provide a smoke exhaust device for a machine.

[Means for solving problems]

In order to solve the above problems, the present invention provides a paper roll for absorbing oil, which is installed above the coil of a reversible cold strip rolling mill for repeatedly rolling a steel sheet, and an upper part of the reversible rolling mill. In a reversible cold strip rolling mill having a flue gas hood connected to a blower via a duct, an air curtain flow is formed by blowing air between the hood and a paper roll. Is characterized by.

[Action]

According to the present invention, air is blown between the smoke exhaust hood provided on the upper part of the reversible cold strip rolling mill and the paper roll installed above the coil to form an air curtain flow. Moreover, an air curtain device is installed so that this air is guided to the hood. As a result, the fumes generated by rolling the steel sheet are prevented from diffusing by the air curtain flow, and are forcibly guided into the hood and smoked. Therefore, it is possible to significantly reduce the fumes floating in the air.

〔Example〕

Hereinafter, preferred embodiments of a smoke exhaust device for a rolling mill according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an explanatory view when the smoke exhaust device for a rolling mill according to the present invention is used in a reversible cold strip rolling mill. In the figure, the same members as those of the conventional smoke exhaust device shown in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted.

The smoke exhaust device of FIG. 1 includes hoods 58, 58, air curtain devices 10, 10, a duct 64, and a fume separator 66. The hood 58 is arranged above the reversible cold strip rolling mill 54 so as not to cover the paper roll 60, as in the conventional smoke exhaust device shown in FIG. Also, hood 5
The duct 64, the fume separator 66, and the blower 68 connected to 8 are also installed similarly to the conventional smoke exhaust device. The air curtain devices 10 and 10 are provided on the sides of the paper roll 60. This allows the hood 5
8 is blown between the paper roll 60 and the paper roll 60 to form horizontal air curtain flows 12, 12.

In the smoke exhaust device described above, the flow of the fumes 57 generated during rolling is as follows. That is, the fumes 57 generated during rolling are diffused into the air from the steel plate 50 and the coil 52 by the ascending flow generated from the steel plate 50 whose surface has become hot, and part of the fumes 57 rises toward the hood 58 and is sucked. To be done. On the other hand, the remaining fumes 57 are blocked from flowing out of the rolling mill system by the air curtain flows 12 and 12, and are forcibly guided to the hood 58. Then, the fume 57 guided to the hood 58 is a blower 68.
Is sent to the fume separator 66 to be captured.

As a result, all the fumes 57 generated during rolling are
Smoke is exhausted by the hood 58 and will not leak out of the rolling mill system.

In the present embodiment, the air curtain device was installed so as to form the air curtain flow horizontally, but if the air can be introduced into the hood and the air curtain flow can be formed between the hood and the paper roll, the blowing direction of the air will be Any angle is acceptable.

[Effect of device]

As described above, according to the smoke exhaust device for a rolling mill of the present invention, an air curtain flow is formed between the hood and the paper roll, and the air curtain device is installed so that the air is guided to the hood. There is. As a result, the fumes generated during rolling can be blocked by the air curtain flow, guided to the hood, and effectively smoked. That is,
Fume is diffused in the factory, and rolling work can be performed without deteriorating the visibility and working environment.

[Brief description of drawings]

FIG. 1 is an explanatory view when the smoke exhaust device for a rolling mill according to the present invention is used in a reversible cold strip steel rolling mill, and FIG. 2 is a conventional smoke exhaust device for a rolling mill reversible cold strip steel. It is explanatory drawing at the time of using for a rolling mill. 10 ... Air curtain device, 12 ... Air curtain flow,
52 ... Coil, 54 ... Reversible cold strip rolling mill, 57
... Hume, 58 ... hood, 60 ... paper roll,
64 ... Duct, 66 ... Hume separator, 68 ... Blower.

Claims (1)

[Scope of utility model registration request] 1. A paper roll for absorbing oil, which is installed above a coil of a reversible cold strip rolling mill for repeatedly rolling a steel sheet, and an upper part of the reversible rolling mill, which is connected to a blower through a duct. In a reversible cold strip rolling mill having a hood for flue gas, an air curtain flow is formed by blowing air between the hood and a paper roll. Smoke exhaust device.