DL series bag filter is a kind of novel, small size, simple andflexible operation, energy saving, high efficiency, airtight workadaptability of the multi-purpose flter equipment. The utilitymodel is mainly composed of a filtering cylinder body, afiltering cylinder cover, a quick opening mechanism and a filtelbag reinforcing net. A pressure filter equipment, filter the liquidfrom the shell side entrance pipe into the bag, the bag itself isftted in the reinforce net, liquid infltration had requiredfneness grade bag that can be qualifed fltrate, impurityparticles capture filter bag. lt is very convenient to replace theflter bag.