A dirt-resistant and anti-seize hydraulic slide valve

Abstract

The invention discloses a stain resistant anti-clamping hydraulic slide valve which aims to realize self stain retaining and stain holding so as to enable the hydraulic slide valve to have the stain resistant anti-clamping capacity and improve the working reliability of the hydraulic slide valve. The stain resistant anti-clamping hydraulic slide valve comprises a valve body (1), a valve hole (3),a valve element (2), an oil inlet (12) and an oil outlet (11), wherein the valve hole (3) is formed in the valve body (1); the valve element (2) is mounted in the valve hole (3); the oil inlet (12) communicates with a left under cut groove (4); the oil outlet (11) communicates with a right under cut groove (5); an under cut groove magnetic ring (6) is mounted at the position, close to the valve hole (3), of the right side of the right under cut groove (5); a pressure equalizing groove (9) is formed in the valve element (2); and a pressure equalizing groove left magnetic ring (7), a pressure equalizing groove right magnetic ring (8) and a pressure equalizing groove bottom magnetic ring (10) are mounted in the pressure equalizing groove (9).

Description

technical field [0001] The invention relates to the technical field of hydraulic valves, in particular to a stain-resistant and anti-seize hydraulic slide valve. Background technique [0002] The application of hydraulic slide valve in hydraulic system is very common, and it is the most widely used structural form among various hydraulic valves. The hydraulic spool valve can be used as the main valve of the reversing valve, proportional valve and servo valve. Its main performance requirement is the reliability and stability of the reversing process. Generally, there is a cylindrical sliding pair between the valve core and the valve sleeve (or valve body). (spool valve pair), there is a certain gap between the sliding pairs, about a dozen microns, therefore, the spool valve pair is very important for the performance of the hydraulic spool valve. [0003] Solid particle pollutants are the most common and harmful pollutants in hydraulic systems. According to statistics, hydrau...

AI Technical Summary

Problems solved by technology

[0007] 1. The high-pressure oil introduced into the "liquid sealing ring" also has pollution problems;

[0008] 2. The pressure equalizing tank has a certain ability to hold dirt, but it has no effect on the adsorption and fixation of iron particles in the gap or in the pressure equalizing tank;

[0009] 3. It is impossible for the external magnetic filter to absorb and filter out all the iron particles in the oil, and the traditional hydraulic slide valve itself does not have a strong anti-fouling and anti-seizing ability

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