Oil filtering method adopting full-frequency-band filtering, magnetization, adsorption and centrifuging

Abstract

The invention relates to an oil filtering method using full-band filtering, magnetization, adsorption and centrifugation, which attenuates the pressure / flow pulsation of hydraulic oil through the filter, which adopts a full-band filter; realizes the separation of solid particles through a U-shaped particle separation module Separation, so that the solid particles in the oil move to the pipe wall, and enter the oil return cylinder through the oil return tube inlet pipe and then return to the oil tank. The oil in the center of the pipeline containing trace small particles enters the inner cylinder through the inner cylinder oil inlet pipe Perform high-precision filtration to improve the service life of the filter element; the oil entering the oil inlet pipe of the inner cylinder flows into the spiral flow channel of the inner cylinder in a tangential flow, and the inner cylinder wall is the filter element, and the filtrate flows close to the filter element under the action of centrifugal force , the filtrate flows quickly parallel to the surface of the filter element, and the filtered hydraulic oil flows out to the outer cylinder perpendicular to the surface of the filter element; the pollution particles deposited on the bottom of the inner cylinder can be discharged to the oil return cylinder through the electronically controlled check valve at regular intervals to improve the use of the filter element life.

Description

【Technical field】 [0001] The invention relates to a hydraulic oil filtering method, in particular to an oil filtering method using full frequency band filtering, magnetization, adsorption and centrifugation, and belongs to the technical field of hydraulic equipment. 【Background technique】 [0002] Statistics at home and abroad show that about 70% to 85% of hydraulic system failures are caused by oil pollution. Solid particles are the most common and harmful pollutants in oil pollution. Hydraulic system failures caused by solid particle pollutants account for 70% of total pollution failures. Metal debris accounts for 20% to 70% of the particle pollutants in hydraulic system oil. Taking effective measures to filter out the solid particle pollutants in the oil is the key to the pollution control of the hydraulic system, and it is also a reliable guarantee for the safe operation of the system. [0003] Filters are key components of hydraulic systems to remove solid particle c...

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Problems solved by technology

[0004] However, the high-pressure filter used in the existing hydraulic system has the following deficiencies: (1) various hydraulic components have different requirements for the cleanliness of the oil, and the particle sizes of the solid particles in the oil are also different. This requires the installation of many different types of filters at different positions in the hydraulic system, which brings about problems of cost and installation complexity; (2) The filter in the hydraulic system mainly adopts the filter cake filter method, and the filtrate is perpendicular to the The surface of the filter element flows, and the intercepted solid particles form a filter cake and gradually thicken, and the filtration speed gradually decreases until the filtrate stops flowing out, which reduces the service life of the filter element

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