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公开(公告)号：US5005478A
公开(公告)日：1991-04-09
申请号：US384966
申请日：1989-07-25
CPC分类号： B05B7/0884 , B05B7/2486 , B05B7/32 , B41F35/06 , B41P2235/31 , Y10T137/85954
摘要： An enhanced system for cleaning a component, such as a blanket, of a printing press in one embodiment provides circulation of wash mixture around a path in such a way that pressure of fluid in the supply line can never exceed ambient pressure. This may be achieved, for example, by utilizing a pump disposed in the return line (rather than in the supply line). Another embodiment provides a spray arrangement for spraying wash mixture onto the component to be cleaned. The spray arrangement has nozzles that are in communication with a feed region (such as the interior of a spray bar) and an isolation valve arrangement for in an open state permitting and in a closed state preventing fluid pressure transmission from the rest of the system to the feed region. A pressure arrangement modifies fluid pressure in the feed region when the isolation valve arrangement is in a closed state. The pressure may be modified so that when the spray arrangement is being prepared for spraying, the pressure is increased above ambient pressure. At other times, the pressure may be below ambient pressure. The pressure arrangement may be realized by a cylinder-piston system, wherein the piston is biased in a first direction to increase the pressure and in a second direction to decrease the pressure.
摘要翻译： 在一个实施例中，用于清洁印刷机的组件（例如毯子）的增强系统提供了洗涤混合物围绕路径的循环，使得供应管线中的流体压力不能超过环境压力。 这可以例如通过利用设置在返回管线（而不是供应管线）中的泵来实现。 另一个实施例提供了用于将洗涤混合物喷射到待清洁的部件上的喷射装置。 喷射装置具有与进料区域（例如喷杆的内部）连通的喷嘴和用于处于打开状态的隔离阀装置，其允许和处于闭合状态，防止从系统的其余部分流体压力传递到 饲料区域。 当隔离阀装置处于关闭状态时，压力装置改变进给区域中的流体压力。 可以改变压力，使得当喷射装置准备喷涂时，压力增加到高于环境压力。 在其他时候，压力可能低于环境压力。 压力装置可以通过气缸 - 活塞系统来实现，其中活塞沿第一方向被偏压以增加压力并且在第二方向上减小压力。
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