external transfer valve type intensifier for hydraulic system

摘要

The present invention relates to an intensifier for a hydraulic system capable of continuously generating a high pressure secondary pressure using a primary pressure supplied from a low pressure hydraulic source.;In more detail, a pressure-increasing piston is built into the pressure-increasing cylinder, and a switching valve is installed outside the pressure-increasing cylinder, and a high-pressure forming part in which a primary side port, a secondary side port, and a small diameter part are formed left and right of the pressure-increasing cylinder is installed. In the pressure intensifier for the hydraulic system provided with a high pressure plunger to the left and right of the pressure-increasing piston, the pressure-increasing cylinder, the pressure-increasing piston and the high-pressure forming unit has a plurality of operating flow paths,;Boost piston 200, characterized in that formed integrally with the high-pressure piston (210a, 210b) to vary the diameter; and small diameter portion (330a) and the non-return valve 321 for generating a secondary hydraulic pressure ( 322), the first inlet 301 and the operating flow passage 302, 303 and the small diameter portion for supporting the generation of the secondary hydraulic pressure by the pressure-increasing piston and the left high-pressure forming portion (300a) ( 330b) and a high-pressure operating unit 300, characterized in that it comprises a right high-pressure forming unit 300b characterized in that it comprises a working flow path 304; and a spring 420 on one side of the switching spool 410 and The cap 440a for supporting the spring is located, and on the other side, the low pressure chamber 430 and the cap 440b forming the low pressure chamber are located, and the working flow paths 404, 405, 406 and the second inlet It characterized in that it comprises a; switching valve body 400 characterized in that it comprises a (401) and the primary fluid discharge port (402, 403) An external-type intensifier hydraulic system.