Cylinder for fluid transfer device

摘要

The invention relates to a cylinder for a fluid transfer device. The cylinder comprises a cylindrical valve chamber passing through the cylinder; the receiving chamber is arranging radially with respect of the valve chamber, the receiving chamber has a cylindrical portion and a trumpet-shaped constriction portion coaxial with the cylindrical portion, the diameter of the head end of the constriction portion is less than the interior diameter of the receiving chamber, the tail ends of the receiving chamber, the input and passages are configured to communicate with the valve chamber, the width of the tail end of the constriction portion is greater than the width of the swinging range of the first passage, the minimal distance between the tail ends of the output and input passages are greater than the width of the second passage. The cylinder of the invention achieves that fluid flows in one direction, and easy to mount, working steadily and reasonable stress.