Frictionless proportional valve magnetic circuit structure

• Main Authors: WANG HUANCHUN, WANG XUDONG, LI HENGJIAN, ZHANG ZHEN, GAO CHENGUANG, LONG JUN, CHEN JUN, GUAN WEI, SONG XINHE
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2017
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The invention discloses a frictionless proportional valve magnetic circuit structure. According to a miniature proportional solenoid valve, the characteristic that a magnetic material B-H (magnetic flux density-magnetic induction intensity) curve is small in slope when being in a low-magnetic-flux-density area, in other words, the electromagnetic force is low as the current is increased is utilized, and a novel proportional valve magnetic circuit based on a large magnetic flux leakage technique is proposed. The frictionless proportional valve magnetic circuit structure is different from a traditional proportional valve magnetic circuit structure, the large-magnetic-flux-leakage magnetic circuit is utilized, frictionless movement of a valve is completely achieved, the proportional precision is improved, and the reliability of the valve is improved; and the dependence of the proportional valve on the machining precision of a boot-shaped part is further lowered, and the proportional valve can have better batch c