Automatic replacing and cleaning device for internal oil way of large hydraulic machine

The invention relates to the technical field of oil replacing of hydraulic devices, and discloses an automatic replacing and cleaning device for an internal oil way of a large hydraulic machine. The device comprises a fixed plate, sealing chambers are fixedly mounted at the left end and the right end in the fixed plate, driving mechanisms are fixedly mounted in the sealing chambers, and each driving mechanism comprises a rotating wheel. According to the automatic replacing and cleaning device for the internal oil way of the large hydraulic machine, oil in a liquid receiving bin is conveyed into a liquid filtering mechanism through a liquid guide pipe by virtue of an exchange mechanism, firstly, the oil enters a liquid containing bin, then is shunted under the action of liquid distributing pipes, slowly enters a connecting groove after being shunted, falls into the lower end of the connecting groove from the upper end of the connecting groove and then passes through an arc-shaped base at the lower end, impurit