Screw reversing type downhole supercharger

The invention relates to a screw reversing type downhole supercharger, and belongs to the technical field of petroleum, shale gas and terrestrial heat drilling tools. The screw reversing type downhole supercharger comprises a filtering bypass assembly, a filtering safety assembly, a hydraulic assembly, a transmission assembly and a pressurizing assembly which are sequentially connected from top to bottom, the pressurizing assembly comprises an upper shell, a connecting shell and a lower shell, the upper shell is installed at one end of the connecting shell in a threaded mode, the lower shell is installed at the other end of the connecting shell in a threaded mode, a power connecting pipe is installed in the upper shell through a righting mechanism, the end of one end of the power connecting pipe extends to the outer side of the upper shell and is in transmission connection with the transmission assembly, the end of the other end of the power connecting pipe extends into the connecting shell and is provided wi