Rolling mill mist exhausting cover

Abstract

The invention provides a rolling mill mist exhausting cover, comprising an inlet side outer cover, a rolling mill upper part platform, an outlet side outer cover, a transmission side outer cover and a rolling door; the inlet side outer cover, the rolling mill upper part platform, the outlet side outer cover and the transmission side outer cover are connected by bolts, and the rolling door lifts in a sliding rail in the inlet side outer cover and the outlet side outer cover in a sliding way; the rolling mill mist exhausting cover is characterized in that: an inlet side exhaust opening and an outlet side exhaust opening are respectively arranged above the transmission side of the rolling mill and below the rolling mill upper part platform, partial cross sections of the two exhaust openings are respectively connected with an inlet side inner pipeline and an outlet side inner pipeline at the operating side of the rolling mill, and the other partial cross sections of the two exhaust openings are used as suction openings, and the suction openings are arranged on the side surface and the bottom surface of the inlet side inner pipeline and the outlet side inner pipeline. The mist exhausting principle in the invention is advanced, the structure is rational, simple and practical, the mist exhausting efficiency is high, the mist exhausting leakage-proofing performance is good and the system operating cost is economic.

Description

technical field [0001] The invention belongs to a mist discharge system for a cold rolling mill. Background technique [0002] During the rolling process of metallurgical cold rolling mills, it is required to spray emulsion between the roll and the rolled steel plate, between the roll and the roll gap, so as to reduce the rolling resistance and reduce the rolling temperature, so as to obtain good surface quality and increase production. The cold rolling mill works at a high speed and is prone to high temperature, and a large amount of mist is generated when the emulsion is sprayed during high-speed rolling. These mist contains rolling oil and other harmful substances to human body. Therefore, the rolling mill must be equipped with a mist removal system. The mist removal system includes a mist removal fan, a mist removal hood, intermediate pipelines, valves and filters, etc. Among them, the capacity of the fan and the structure of the mist exhaust cover have the greatest i...

AI Technical Summary

Problems solved by technology

The main disadvantages of such enclosures are:

[0004] 1. The cover has a large space, few suction ports, and the suction ports are far away from the mist source area, so the mist suction efficiency is low

[0005] 2. The negative pressure formed in the hood is uneven when the fog is exhausted

The farther away from the suction port, the lower the negative pressure, resulting in serious leakage of oil mist on the operating side of the rolling mill and the top of the cover

[0006] 3. There are multiple sources of oil mist during the rolling process. They are far or close to the suction port, large and small. It is obviously unreasonable to rely on one or two fixed suction ports for suction

[0007] 4. In order to prevent the leakage of oil mist in the cover, the mist removal capacity of the mist removal fan is increased, resulting in uneconomical operating costs

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