Isolated metal protection cavity for filter

The utility model discloses an isolation type metal protection cavity for a filter, which comprises a protection module, a heat dissipation module and an installation module, and is characterized in that the protection module comprises a shell, a cover body arranged in the shell and the filter detachably connected with the shell; the heat dissipation module comprises a double-shaft motor installed in the shell and a first bevel gear connected to the outer side of an output shaft of the double-shaft motor in a sleeving mode. According to the utility model, the pressing plate limits the installed filter and shields external interference signals, the output shaft of the double-shaft motor drives the first bevel gear and the disc body to rotate, then the second bevel gear in a meshing state drives the plurality of fan blades to rotate through the rotating shaft, and the wind generated by the fan blades radiates the heat of the two sides of the filter, and at the same time, the heat dissipation effect of the filte