要实现真空阀门操作自动化,一般采用电磁阀或电动阀。它的缺点是体积较大,噪声难免。近来,国外也有采用气动的。我们结合具体情况,摸索出一种体积小、节省设备、无噪声的简便气动真空阀。 气动阀是借助一个专用气泵,产生几个大气压(P)的压缩气流,经图1中气嘴A送入气室1;气室2与大气相通,压强 To achieve the automation of vacuum valve operation, the general use of electromagnetic valve or electric valve. Its disadvantage is the larger volume, the noise is inevitable. Recently, foreign countries have adopted pneumatic. We combine the specific circumstances, to explore a small, saving equipment, noise-free simple pneumatic vacuum valve. Pneumatic valve is by means of a dedicated pump, resulting in several compressed air (P) of the gas flow, gas nozzle A into the gas chamber 1 in Figure 1; gas chamber 2 and the atmosphere, the pressure