Mechanically and manually actuated pneumatic valves are required in pneumatic systems to regulate air pressure or the compressed air as a medium. Manually actuated means that the directional control valves are operated (opened or closed) via a pushbutton, hand lever, rotary lever, mushroom pushbutton or using a foot switch.
Plungers or roller levers operate mechanical directional control valves. Mechanically actuated pneumatic valves are often used to directly control cylinders or clamping tools.
The energy generated by the air is transferred to various consumers in the system (for instance cylinders or grippers) so that they can generate a movement or gripping force. A mechanical valve can be used to determine in which direction the air is let through. The valves are therefore used as control valves in normal operation or as emergency-off pushbuttons on machines. In hazardous situations, for example, a system can be completely depressurised and the supply of new air can be stopped. Manually operated pneumatic valves can also be used for directional control, allowing air to flow through a tube in one direction rather than another, ensuring smooth operation of the pneumatic system. We have special manually and mechanically actuated valves in our product range, for example for use in control cabinets and control desks or for confirming workpiece positions using compressed air signals.
无论是电控阀、气控阀还是手控阀,阀在气动系统中扮演着重要角色。由于气控阀面临的要求因项目、环境、应用不同而存在巨大差异,因此市场上有各种款型供用户选择和使用。
操作方式就是其中一项差异。除机控阀以外,还有手控阀、液压控制阀、电控阀等阀。由于操作简单、运行可靠,机控阀、气控阀和手控阀应用广泛。
除不同类型的阀以外,还可选择过滤减压阀:减压阀直接与压缩空气过滤器组合在一个设备中,让设备可同时完成两种功能。如果某些过程对过程安全要求较高,同时要求停机时间较短,这种情况就非常适合选择过滤减压阀,因为既能通过过滤器去除压缩空气中的杂质,又能完美调节工作压力。
这款机控阀是 Festo 核心系列产品之一。它既可装备为纯直动圆头式阀,也可装备滚轮杠杆或单向滚轮杠杆。某些阀的派生型还可用于真空运行。其坚固耐用的金属外壳和卓越的气动性能事故这款阀的特色。产品设计符合人体工程学原理,既安全又可靠。操作阀所需的力极低,而且阀可以逆向运行。此外,现代化设计和颇具吸引力的价格亦是产品的两大亮点。
这款手控阀与机控阀一样,也是 Festo 核心系列产品之一。其操作元件,包括手柄、手压杆、选择开关等。与机控阀一样,这款阀也配备坚固的金属外壳,采用符合人体工程学原理的操作设计,所需操作力极低,而且外观设计现代化。这款产品同样支持逆向运行。
这款同属于 Festo 核心产品系列的阀,安装了金属或聚合物操纵杆,是手控阀的一种。这款阀可以使单作用或双作用气缸在行程范围内停止运行。如果“中封式”(C 型),驱动器活塞会一直移动,直至达到力平衡。如果“中泄式”(E 型),可以移动活塞,只需克服摩擦力。如果“中压式”(U 型),接口 2 和 4 压力相同。如果面大小相同,则活塞不移动。如果面大小不同,活塞移向较小的面。阀门支持安装面板,设有通孔或固定孔。旋转式手柄阀 VHER还支持通过传感器检测切换位置。
当前很多行业和应用领域都需要使用机控和手控气动阀对系统进行调控。气动阀可用于以下应用: