Warming device of heavy oil pump

The utility model relates to a warming device of a heavy oil pump, which is applied to the technical field of petroleum processing equipment. An inlet of the heavy oil pump is provided with a pipeline connected with an inlet filter, an inlet of the inlet filter is connected with an inlet valve, an outlet of the heavy oil pump is connected with an outlet valve, the outlet end of the outlet valve is connected with a check valve, and the outlet end of the check valve is connected with an outlet pipeline; and a pump-warming line inlet valve is connected onto a pipeline from the heavy oil pump to the outlet valve, an outlet of the pump-warming line inlet valve is connected with a flow-limiting pore plate, the other end of the flow-limiting pore plate is connected with a pump-warming line outlet valve, and the outlet end of the pump-warming line outlet valve is connected onto a pipeline at the outlet end of the check valve. A communicating-line control valve is connected onto the pipeline at the outlet end of the c