Pumping and injecting integrated device and liquid pumping and injecting method of novel water cooling system

The invention belongs to the technical field of converter water cooling systems, and relates to a pumping and injecting integrated device and a liquid pumping and injecting method of a novel water cooling system. The device includes a mobile device, a cooling liquid storage tank, a control box, a three-phase variable frequency water pump, a frequency converter, a filter, two three-way joints and reversing valves, wherein the cooling liquid storage tank, the control box, the three-phase variable frequency water pump, the frequency converter, the filter, two three-way joints and the reversing valves are distributed on the mobile device. The frequency converter is used to power the three-phase variable frequency water pump, so as to realize stepless regulation control of the flow rate of a coolant. By adding the design of the control box, the flow direction of the frequency converter and two reversing valves can be controlled, thereby realizing the conversion of injecting and pumping functions. The filter is arr