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[CN 201720267095.2] High Response Liquid Filling Device for Large Rapid Hydraulic Press
[CN 201720267095.2] Title of High Response Liquid Filling Device for Large Rapid Hydraulic Press: Application Number of High Response Liquid Filling Device for Large Rapid Hydraulic Press: CN 201720267095.2 Applicant: Chongqing Jiangdong Machinery Co., Ltd. Application Date: 2017-3-17 Patent Type: Utility Model The utility model discloses a high response liquid filling device for large rapid hydraulic press, which includes a main pressurizing oil cylinder with a liquid filling tank installed at the tail of the main pressurizing oil cylinder, and there are several active control type filling valves directly installed on the main pressurizing oil cylinder in the filling tank, the control medium inlet and outlet of the active control type filling valve are all connected to the main liquid inlet pipe and the main liquid return pipe, and the main liquid inlet pipe is connected to the constant pressure oil source, the main liquid return pipe is connected to the oil tank, and a proportional directional valve is arranged on the main liquid inlet pipe and the main liquid return pipe. The curve flexible control of the proportional directional valve is used to realize the rapid opening and closing of the charging valve without impact, which meets the rapid filling of the main pressurizing oil cylinder and the rapid pressure relief without impact when the movable beam of the large rapid hydraulic press is running quickly. The utility model satisfies the rapid filling of the main pressurizing oil cylinder and the rapid pressure relief without impact when the movable beam of the large-scale rapid hydraulic press is running quickly, the response speed is fast, and the production efficiency is high.
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