Oil return filtering device and filtering method for supporting roll lubricating system of rolling mill

Abstract

The invention discloses an oil return filtering device and filtering method for a supporting roll lubricating system of a rolling mill. The oil return filtering device comprises an oil tank, wherein an oil output pipe and an oil return pipe are connected onto the oil tank; the oil return filtering device also comprises a filter arranged below an outlet of the oil return pipe in the oil tank; the filter comprises a magnetic disc assembly; the magnetic disc assembly is externally sheathed with a metal filter screen; and the metal filter screen is externally sheathed with a metal protecting net. The oil return filtering method for the supporting roll lubricating system of the rolling mill is realized by using the oil return filtering device of the supporting roll lubricating system of the rolling mill. According to the oil return filtering device and filtering method for the supporting roll lubricating system of the rolling mill, magnetic powder is fully absorbed by the magnetic disc assembly in the filter under the condition that an adsorption force is increased; nonmagnetic particles and sundries can be filtered in time by the metal filter screen, so that the cleanness of oil is ensured, the service period f oil products is prolonged and the service life of the supporting roll is prolonged.

Description

Technical field [0001] The invention relates to a support roll bearing lubrication system for a cold rolling pickling tandem rolling mill, in particular to an oil return filter device and a filtering method for the support roll lubrication system of a rolling mill. Background technique [0002] In the high-quality strip rolling process, a rolling mill is used as a rolling tool, and its continuous production line often combines pickling and rolling mills into a combined production line. Roll bearings for modern pickling rolling mills generally use rolling bearing structures. The support roller bearings of rolling mills usually use thin oil for forced lubrication. The support roller lubrication system is the exclusive lubrication equipment for the support roller bearings. The filtering device plays a crucial role in the system, and its filtering effect will directly affect the lubrication effect and system operation. The operation of the lubrication system of the backup roll of th...

AI Technical Summary

Problems solved by technology

The traditional filter device is mainly composed of several groups of magnetic rods in the middle of the oil tank in the lubrication system, and the following shortcomings have been exposed in production: On the one hand, the filter device is mainly composed of magnetic rods, which can only absorb iron powder in impurities and have the ability to hold dirt Poor; the magnetic force of the magnetic rod is limited and the adsorption area is too small, resulting in unsatisfactory iron removal ability of the filter device; since the magnetic rod is directly placed in the middle of the oil tank and soaked in the oil, impurities can only come into contact with the oil after entering the system circulation Magnetic rods, the filtering effect is not ideal; on the other hand, the disassembly and cleaning of the filter device is more complicated, especially the cleaning of the magnetic rods will bring certain difficulties to the on-site operators

The abnormal deterioration of the oil quality leads to system oil change before the cycle, and the oil will be polluted again shortly after the oil change, and there is a tendency of gradual deterioration

On the other hand, the entry of large particles of non-metallic impurities into the system will often cause damage to system regulating valves, lubrication pumps and other components

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