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    • 10. 发明公开
    • PRESSURE RELIEF VALVE
    • 压力释放阀
    • EP2425097A2
    • 2012-03-07
    • EP10719100.9
    • 2010-04-21
    • Bucyrus Europe GmbH
    • SUILMANN, Franz-HeinrichDWORNIK, Oliver
    • E21D15/44E21D15/46E21D15/51E21D23/16F16K17/04
    • E21D23/16E21D15/44E21D15/46E21D15/465E21D15/512F16K17/0493
    • The invention relates to a pressure relief valves, especially a rock-burst safety valve for the hydraulic face support, having a consumer connection (3) with a bore (2) a fluid outlet (4), and a valve piston which is arranged in the valve and pressed against a valve seat (7) by means of a valve spring system (6) for separating consumer connection and fluid outlet. In order to improve the valve with regard to construction and functioning such that a rapid and reliable response behaviour for the opening and closing movements can be achieved, the valve seat (7), the bore (2) of the consumer connection (3) and the fluid outlet (4) are formed on a head piece (1) having a guide bore (24) for the valve piston (5). Furthermore, the valve spring system (6) has at least one disc spring stack (12) having disc springs (11) which are arranged in the valve housing (13), wherein the actuating force of the spring stacks is applied against an end of the valve piston (5) that is remote from the sealing seat (7).
    • 本发明涉及一种用于液压端面支撑件的减压阀,尤其是用于液压面支撑件的岩石破裂安全阀,其具有带孔(2)的流体出口(4)的消耗器连接件(3)以及布置在 通过用于分离消耗者连接和流体出口的阀门弹簧系统(6)将阀门压向阀座(7)。 为了在结构和功能方面改进阀,从而实现用于打开和关闭运动的快速和可靠的响应行为,阀座(7),消耗器连接(3)的孔(2)和 流体出口(4)形成在具有用于阀门活塞(5)的导向孔(24)的头部件(1)上。 此外,阀门弹簧系统(6)具有至少一个具有布置在阀门壳体(13)中的碟形弹簧(11)的碟形弹簧堆叠(12),其中弹簧堆叠的致动力抵靠 阀活塞(5)远离密封座(7)。