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[CN 201720541067.5] gravity balance constant pressure oil tank for press
[CN 201720541067.5] Title of a gravity balanced constant pressure oil tank for presses: Application number of a gravity balanced constant pressure oil tank for presses: CN 201720541067.5 Applicant: Henan Zhengkai Yuan Machinery Technology Co., Ltd. Application date: 2017-5-16 Patent type: Utility model The model discloses a gravity balanced constant pressure oil tank for presses, including an oil cylinder, an oil tank connected to the oil cylinder through an oil circuit, and a floating plunger matched with the oil tank, A filling valve is provided on the oil circuit, and a plurality of counterweight blocks are provided on the floating plunger of the oil tank. The floating plunger of the oil tank includes a plunger body and a plunger head. The diameter is larger than the diameter of the plunger head. The middle of the floating plunger of the oil tank is provided with a liquid injection port, which vertically penetrates the plunger head and the plunger body. The counterweight block is an annular structure and is sleeved on the floating plunger of the plunger of the oil tank. The application of the utility model on a press with a filling valve system improves the oil absorption performance of the main cylinder of the press when it is pressed down, can make the opening of the filling valve and the oil absorption response more rapid, and effectively improve the press Fast action speed.
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