This paper discusses operation of dense phase pneumatic conveyor with automatic pressure control valve , and structure and operation of the automatic pressure control valve 摘要通過分析密相自動(dòng)調(diào)節(jié)式氣力輸送的原理,探討了自動(dòng)調(diào)節(jié)閥的結(jié)構(gòu)和工作機(jī)理。