Wuxi Yizhiling Locomotive Development Co. LTD , https://www.yizhilingev.com
Micro fluid return valve in micro polyurethane mixing unit
The utility model introduces a compact backflow throttle valve designed for use in a miniature polyurethane mixing device, offering convenient hydraulic pressure adjustment, stable set pressure, and minimal clogging issues. The valve consists of a valve body, a valve core, a valve seat, and an adjustable locking mechanism. The valve seat features an inverted cone structure, where the top portion of the valve core is conical, and the cone angle on the valve core is complementary to the inverted cone on the valve seat. This design ensures that the conical part of the valve core aligns with the cavity inside the valve body, allowing the flow of liquid materials through a coaxial annular orifice formed between the valve core's inverted cone and the valve seat's horn-shaped hole. The specific cone angles between the two components enable precise control of fluid viscosity, ensuring a stable pressure drop and smooth flow. As a result, the valve effectively prevents clogging and maintains consistent performance. Additionally, the throttle function helps maintain constant pressure before and after the valve, making it easy to adjust and operate. This innovative design not only enhances efficiency but also improves the reliability of the polyurethane mixing process.