Slit type annular hydraulic regulating valve

• Main Authors: SHI LIMIN, QUAN YUHUA, GONG WANGJUN, ZHANG JUNPING, XU DANHONG
• Format: Patent
• Language: Chinese; English
• Published: 30.09.2009
• 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

Disclosed is a slit type annular hydraulic regulating valve, which belongs to the technical field of valve manufacture. The slit type annular hydraulic regulating valve comprises a valve body, a valve seat, a valve spool, a sealing pair structure, a displacement sensor and a servo hydro-cylinder. The valve body of double-layer structure is composed of an inner casing and an outer casing, a motion guide segment of the valve spool is arranged at the front end of the inner casing of the valve body, a closed deflector shield is connected to the rear portion of the inner casing of the valve body, the servo hydro-cylinder is arranged in the inner casing of the valve body, the valve spool is fixed on the outer casing of the servo hydro-cylinder, the displacement sensor comprises a horizontal sensor and a vertical sensor, the sealing pair structure is composed of a dovetail groove, a soft sealing ring and two hard sealing surfaces, wherein the dovetail groove is arranged on an outer circle of the sealing end face of