Interior air filtering device for quick-assembly type analytical instrument

The utility model relates to the field of air filtering devices, in particular to an internal air filtering device for a quick-assembly type analytical instrument. The technical problems that in the prior art, a filtering structure in an air filtering device in an analysis instrument is usually difficult to replace quickly, and the whole air filtering device is difficult to assemble and use quickly are solved. According to the technical scheme, the internal air filtering device for the quick-assembly type analytical instrument comprises a first mounting assembly. The first mounting assembly and the second mounting assembly are assembled together, then the second mounting assembly and the first filtering assembly are mounted together, and the second mounting assembly is fixed in the first filtering assembly through the positioning assembly, so that the assembly of the device can be completed, and the quick assembly of the device is realized; the problems that in the prior art, a filtering structure in an air f