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CN105492812A 三偏心减压蝶阀 无效 - 撤回

三偏心减压蝶阀
摘要：
减压阀(50)是一个三偏心蝶阀结构。它有一个主体(52)、盘(82)、盘组件(54)和具有在凸轮(66)上有机械优势的杠杆臂(70)的闭合机制(56)，它有助于阀的关闭。阀(50)依赖于可以被加工以改变阀的开启压力的剪切销(80)。盘(82)由多个调整紧固件(88)和保持件紧固件(90)，其可以被调节以提供在阀(50)的有效密封固定到所述盘组件(54)。修改阀密封件(94)具有一或多层石墨(98)和金属(100)。盘密封件(102)在限制所述盘密封件(102)的径向运动的盘(82)的槽(104)中被捕获。阀密封件(94)在保持器和盘密封件(102)之间被捕获。
摘要（英）：

A pressure relief valve (50) in a triple offset butterfly valve configuration. It has a body (52), pallet (82), pallet assembly (54) and closure mechanism (56) with a lever arm (70) providing mechanical advantage upon a cam (66) which aids in the closing of the valve. The valve (50) relies upon a shear pin (80) which can be machined to alter the opening pressure of the valve. The pallet (82) is secured to the pallet assembly (54) by a plurality of adjustment fasteners (88) and retainer fasteners (90) which can be adjusted to provide an effective seal on the valve (50). A valve seal (94) has one or more layers of graphite (98) and metal. (100) A pallet seal (102) is captured in a groove (104) in the pallet (82) which restricts radial movement of the pallet seal (102). The valve seal (94) is captured between a retainer and the pallet seal (102).

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