Zhejiang Sanhua Co., Ltd

Qingyong Wang

Ming Lv

Xianrang Wei

Guohua Xu

A flow regulating valve includes a valve seat and a shell connected to the valve seat, a motor is provided in the shell, and the motor is connected to a screw rod. The screw rod is connected with a nut in a thread cooperation manner, the nut is connected with a valve rod, and the valve rod is movable in an axial direction to regulate an opening degree of a valve port on the valve seat. The whole of the nut or a lower portion of the nut is in clearance fit with the mounting groove in the valve rod in a radial direction. An internal wall of the mounting groove is provided with an annular position limiting groove, in which a position limiting component is provided. The design of the flow regulating valve is able to eliminate the coaxiality error between the screw rod and the screw nut.

Flow regulating valve

A flow control valve comprises a valve seat () having a valve port () in its valve chamber and a valve rod () opening or closing the valve port (). A sleeve protrusion part () projects upward from the valve port () in an axial direction thereof. The valve rod () is tubular and is cylindrical at the lower end. An open slot () matching with a flow curve is provided in the circumferential side wall of one of the sleeve protrusion part () and the lower end of the valve rod (). One of the sleeve protrusion part () and the lower end of valve rod () is inserted into or extracted from the other to disconnect or connect the open slot () with the valve port (). The structural design of the flow control valve can balance the refrigerant pressure on the valve rod () in the axial direction while ensuring that the required flow curve can be obtained.

Growing community of inventors

Province, China

Qingyong Wang