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[CN202010813915.X] Flow and pressure control device for hydraulic press
[CN202010813915.X] a hydraulic machine flow and pressure control device title: a hydraulic machine flow and pressure control device application number: CN202010813915.X applicant: Shao Yugang application date: 2020-8-13 patent type: invention application the present invention discloses a hydraulic machine flow and pressure control device, including a valve body, the upper end of the valve body is provided with an upper turning groove, the lower end cover is installed on the upper end of the upper turning groove, A lower end cover is fixedly installed at the lower end of the lower turning groove; the upper end cover is provided with a P port, and the lower end cover is provided with an A port and a T port; the valve body is provided with a shaft; A first valve core is rotatably connected in the upper turning groove, and a second valve core is rotatably connected in the lower turning groove; a first through hole is provided in the first valve core, and an upper dovetail groove is provided at the bottom of the upper turning groove, the top of the lower turning groove is provided with a lower dovetail groove, and the valve body is provided with a second through hole; the second through hole is provided with a screw plug, and the screw plug is provided with a throttle hole; The second valve core is provided with a third through hole; an overflow valve assembly is fixedly installed on the side of the lower end cover; the hydraulic machine flow and pressure control device is not only simple in structure, but also compact in size and low in manufacturing cost.
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