The invention discloses a
diffusion pump capable of achieving rapid starting, floating heating and rotating injection. The
diffusion pump comprises a pump body, pump oil, a pump core, an
evaporation system, a cooling
system, an injection
system and a
control system, the
evaporation system of the pump adopts a heating mode of floating heating, the
evaporation system comprises an
evaporator, a heater and a temperature measuring and
temperature control element, the
evaporator is provided with a heating area and an
oil storage area, the heating area and the
oil storage area are separated through amiddle partition plate and communicate with each other through an oil hole in the partition plate, the heater is arranged in the heating area, and is used for heating the pump oil in the heating areato enable the pump oil to be instantly evaporated to become steam, the heater is fixed on the middle partition plate, the middle partition plate can float in the pump oil, the top of a steam guide
pipe in the injection system is provided with a rotating spray head, a series of nozzles are arranged on the periphery of the rotating spray head, when steam is sprayed out of the nozzles, the rotatingspray head can rotate at a high speed, a heating device is arranged on the steam guide
pipe or around the steam guide
pipe so that the temperature of the pump core and the steam can be improved, and rapid starting of the
diffusion pump can be realized.