Waterborne sealing device for amphibious vehicle

The invention provides a waterborne sealing device for an amphibious vehicle, and the waterborne sealing device is used for solving the waterborne sealing problem of the vehicle and can realize waterborne sealing of an axle and a wheel-side reducer as well as other rotating parts by means of the original parts and devices in the vehicle on the basis of structure improvement of the existing vehicle. The sealing device is composed of an air compressor, a pressure reducing valve, a switch valve, a one-way valve, a three-way one-way valve, a respirator, a connecting pipeline and the like, wherein the air compressor is connected to the output end of an engine, and the generated high pressure air is depressurized through the reducing valve and then enters the axle or a box of the wheel-side reducer through the switch valve, the one-way valve and the three-way one-way valve so as to form high pressure and further realize sealing under the waterborne running state of the vehicle. The waterborne sealing device provide