Waste gas pretreatment filtering device

The invention belongs to the field of waste gas purification and in particular relates to a waste gas pretreatment filtering device. The waste gas pretreatment filtering device is used at the front end of waste gas purification equipment to pretreat and filter organic waste gas with dust, oil mist and water vapor, and waste gas that impurities such as dust, oil mist and water vapor in an organic waste gas are filtered off by using the device is subjected to up-to-standard emission under purification treatment of the waste gas purification equipment. The waste gas pretreatment filtering devicecomprises main components such as a shell 1, a primary filter chamber 17, a secondary filter chamber 19, a settling chamber 18 and a partition plate 11, wherein the shell 1 is provided with support feet 2, an air inlet 3, an exhaust hole 4, a sewage outlet 5, an access door 8, a filter core replacement door 7, a mounting lifting lug 10 and a pressure relief port 9; multi-stage baffle plates 12 aremounted inside the first