Valve cover structure and high-precision electric cylinder pump using same

The invention relates to the technical field of valve cover structures, in particular to a valve cover structure and a high-precision electric cylinder pump using the same. The invention provides a valve cover structure which is characterized in that a piston sleeve is hollow, and a piston rod is arranged in the piston sleeve in a reciprocating sliding manner; the valve body is fixed to one end of the piston sleeve, and the water inlet pipe is arranged at the lower end of the valve body and communicates with the piston sleeve. The water outlet pipe is arranged at the upper end of the valve body and communicates with the piston sleeve. The distribution disc is rotatably arranged in the valve body, and the distribution disc is communicated with the water inlet pipe and the water outlet pipe; the piston rod moves backwards, so that water in the water inlet pipe is injected into the piston sleeve through the distribution disc; the distribution disc is suitable for uniformly dispersing water into the valve body; a