Efficient filtering device for roll steel sludge treatment

Abstract

The invention discloses an efficient filtering device for roll steel sludge treatment, which comprises a sealed pressurizing bin and a filtering chamber, wherein the sealed pressurizing bin is a sealed hollow tank body; the filtering chamber is arranged inside the sealed pressurizing bin; the filtering chamber comprises a driving wheel and a filtering belt; the filtering belt winds the periphery of the driving wheel to form a filtering delivery mechanism; the driving wheel is connected with a vibrating pump, and is driven by the vibrating pump to vibrate; besides, a cleaning device used for cleaning the filtering belt is fixed in a cleaning tank at the bottom of the sealed pressurizing bin; air blowing pipes are further arranged inside the sealed pressurizing bin; the open ends of the air blowing pipes are flat, and the widths of the open ends correspond to the width of the filtering belt, and the opening directions of the air blowing pipes are opposite to the transmission direction of the filtering belt.

Description

technical field [0001] The invention relates to the field of steel rolling wastewater treatment, in particular to a high-efficiency filter device for treating steel rolling sludge. Background technique [0002] Due to direct contact with the equipment, the circulating water of the steel rolling direct cooling system has a high content of suspended matter and oil in the water. At the same time, in the steel rolling process, a large amount of iron oxide washed down by the high-pressure water gun also enters the steel rolling direct cooling circulating cooling water system with water. Therefore, the steel rolling direct cooling circulating cooling water system is usually equipped with scale recovery and sludge treatment systems, generally including rolling mill swirl wells, chemical degreasers, mud pools and filter press systems. [0003] At present, in the traditional process of circulating water in the steel rolling direct cooling system, the bottom sludge of the chemical deg...

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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