Oil transportation main pump mechanical seal flushing pipeline filtering device and blockage alarm system

The utility model provides an oil transportation main pump mechanical seal flushing pipeline filtering device and a blocking alarm system, the filtering device comprises a first valve, a quick-open type filter, a second valve and a differential pressure transmitter, the first valve and the second valve are respectively arranged on an inlet pipeline and an outlet pipeline of the quick-open type filter; the quick-open type filter can filter impurities in lubricating oil and can be quickly disassembled for cleaning when blockage occurs; the differential pressure transmitter is connected with an inlet and an outlet of the quick-open type filter so as to detect the pressure difference between the inlet and the outlet of the quick-open type filter. The filter blockage alarm system comprises an oil transportation main pump mechanical seal flushing pipeline filtering device and further comprises a control terminal background machine, and the control terminal background machine is connected with the differential press