Multi-seal ultrahigh pressure oil way filter

Abstract

The invention discloses a multi-seal ultrahigh pressure oil way filter. The multi-seal ultrahigh pressure oil way filter includes a filtering barrel, a filter seat, and a filter element; an oil inletand an oil outlet are formed in the filter seat; the filtering barrel and the filter seat are fixed through thread connection; a step is arranged on a lower part of the filtering barrel; a sealed circular space is formed by the step and an inner side wall and a bottom wall of the filter seat; a hole sliding ring type seal combination is arranged in the circular space; the oil inlet communicates with an oil cavity; a filter element is embedded between an inner wall of the filtering barrel and an outer wall of the oil cavity; the oil outlet communicates with the filter element; a hump extendingupward and adapting to the oil cavity is arranged in the filter seat; the hump stretches into the oil cavity; and an O-shaped seal ring is arranged on a contact part between the filter element and thehump and the inner bottom wall of the filter seat. The step and the combined seal manner can improve the seal effect between the filtering barrel and the filter seat, and can effectively ensure thatoil leakage and pressure relief can be prevented while high pressure oil is in the filter.

Description

technical field [0001] The invention belongs to the technical field of hydraulic circuit filtering systems, and in particular relates to a multi-seal ultra-high pressure oil circuit filter. Background technique [0002] Hydraulic oil is recycled and used in the pipeline. After passing through various hydraulic machinery, some impurities are often brought in, which will affect the hydraulic pressure, and even bring impurities into the controlled machinery, affecting the performance of the equipment. Therefore, it is often used in the oil circuit. Add a filter to the ultra-high pressure oil circuit, because there is a high pressure in the oil circuit, if the sealing performance of the filter itself is not good, although the hydraulic oil can be cleaned after filtration, the pressure of the hydraulic oil will be destroyed. At the same time, weakening the control effect of the hydraulic circuit will also affect the normal operation. Currently commonly used high-pressure oil cir...

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Problems solved by technology

[0002] Hydraulic oil is recycled and used in the pipeline. After passing through various hydraulic machinery, some impurities are often brought in, which will affect the hydraulic pressure, and even bring impurities into the controlled machinery, affecting the performance of the equipment. Therefore, it is often used in the oil circuit. Add a filter to the ultra-high pressure oil circuit, because there is a high pressure in the oil circuit, if the sealing performance of the filter itself is not good, although the hydraulic oil can be cleaned after filtration, the pressure of the hydraulic oil will be destroyed. At the same time, the control effect of the hydraulic circuit is weakened, which will also affect the normal operation

Currently commonly used high-pressure oil circuit filters usually adopt a single sealing method between the filter cartridge and the filter seat, the sealing performance is not good, and pressure leakage often occurs

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