Stand-alone environment-friendly bag-type dust collector

The utility model discloses a stand-alone environment-friendly bag-type dust collector which comprises a box body, an installation groove is formed in the upper surface in the box body, sliding grooves are formed in the two ends in the installation groove, sliding plates are installed in the sliding grooves in a sliding mode, and fastening assemblies are fixedly installed on the lower surfaces of the sliding plates. A filter assembly is detachably mounted on the upper surface of the fastening assembly, the fastening assembly comprises a fixing rod, the fixing rod is fixedly mounted on the upper surface of the sliding plate, a pushing ring is slidably mounted on the outer wall of the fixing rod, and a sealing filling block is fixedly mounted on the upper surface of the pushing ring. The dust collecting bag can be quickly disassembled and assembled, time and labor are saved, one person can easily disassemble and assemble the dust collecting bag, tools are not needed, the working efficiency is improved, the inte