A high-efficiency filter device for steel rolling sludge treatment

Abstract

The invention discloses a high-efficiency filter device for treating steel rolling sludge, which comprises a sealed pressurized chamber and a filter chamber, wherein the sealed pressurized chamber is a closed hollow tank body, and the filter chamber is arranged inside the sealed pressurized chamber. The filter chamber includes a drive wheel and a filter belt. The filter belt is wound around the periphery of the drive wheel to form a filter transmission mechanism. The filter belt is connected to a vibrating pump and driven by it to vibrate; in addition, the cleaning tank at the bottom of the sealed pressurized chamber is fixed with a brush for cleaning. The cleaning device of the filter belt; the inside of the sealed pressurized chamber is also provided with a blowing pipe, the opening end of the blowing pipe is set to a flat shape, and the width of the opening end corresponds to the width of the filter belt, and the opening direction of the blowing pipe is in line with the width of the filter belt. The transmission direction is oppositely set.

Description

technical field [0001] The invention relates to the field of steel rolling wastewater treatment, in particular to a high-efficiency filter device for steel rolling sludge treatment. Background technique [0002] Due to the direct contact with the equipment, the circulating water of the rolling steel direct cooling system has a high content of suspended solids and oil in the water. At the same time, in the rolling process, a large amount of iron oxide scale washed down by the high-pressure water gun also enters the rolling steel direct cooling circulating cooling water system with the water. Therefore, the steel rolling direct cooling circulating cooling water system is usually equipped with an oxide scale recovery and sludge treatment system, which generally includes a rolling mill cyclone well, a chemical degreaser, a mud pool and a filter press system. [0003] At present, in the traditional process of circulating water in the direct cooling system of steel rolling, the bo...

AI Technical Summary

Problems solved by technology

In this process, the plate and frame filter press for processing the bottom sludge of the chemical degreaser has defects such as large equipment investment, large volume, complex mechanism, and intermittent operation due to structural reasons, resulting in low working efficiency and poor filtering effect.

Although the existing belt filter can realize continuous operation, it generally has defects such as easy blockage of the filter screen, high liquid content in the retentate, and unsatisfactory solid-liquid separation effect. In addition, because the filter working surface of the belt filter has A certain length, when the amount of material added to the filter belt is large, it is easy to cause damage to the filter belt. On the one hand, it limits the amount of material added to the filter, affecting work efficiency. On the other hand, it accelerates the wear of the filter belt and affects the service life of the belt filter.

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