Patent attributes
An electric oil pump with an one-way valve is provided, which includes a control box. The control box is provided with a communication pipe and a control board, one end of the communication pipe is connected with an oil-extracting pipe, the other end is connected with an oil outlet pipe, a pump body is arranged in the oil outlet pipe, and a bottom of the control box is rotatably installed with a threaded cap. When the oil pump is, working, the gasoline is blocked by the one-way valve and transported to the oil outlet pipe via the oil-extracting pipe during the oil delivery process, and the negative pressure in the oil drum makes the outside air enter into the oil drum through the one-way valve when the oil pumping is completed, so as to maintain the pressure balance between the inside and outside of the oil drum.