Oil filtering method achieving filtration, magnetization, adsorption, magnetic field rotation and centrifugation with variable structures

Abstract

The invention relates to an oil filtering method achieving filtration, magnetization, adsorption, magnetic field rotation and centrifugation with variable structures. Pressure / flow pulse of hydraulic oil is dampened through a filter, and the filter is a variable-structure filter; separation of solid particles is achieved through a U-shaped particle separation module, solid particles in oil fluid are made to move towards a pipe wall, enter an oil return cylinder through an oil return cylinder inlet pipe, and then flow back to an oil tank, oil fluid containing a small number of small-size particles at the center of a pipeline enters an inner cylinder through an inner cylinder oil inlet pipe for high-precision filtration, and the service life of a filter element is prolonged; oil fluid entering the inner cylinder oil inlet pipe flows into a spiral runner of the inner cylinder in a tangential inflow mode, the filter element is arranged on the wall of the inner cylinder, filtrate flows by being attached to the filter element under the action of centrifugal force and flows fast parallel to the surface of the filter element, and filtered hydraulic oil flows out of an outer cylinder in the direction perpendicular to the surface of the filter element; contamination particles precipitated at the bottom of the inner cylinder can be discharged out of the oil return cylinder periodically through an electric control check valve, and the service life of the filter element is prolonged.

Description

【Technical field】 [0001] The invention relates to a hydraulic oil filtering method, in particular to an oil filtering method using variable structure filtering, magnetization, adsorption, rotating magnetic field 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...

AI Technical Summary

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

Images