Three position three-way control valve

• Main Author: XIHONG LI
• Format: Patent
• Language: English
• Published: 28.02.2007
• 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 utility model discloses a three-position three-way control valve, which comprises an upper valve body and a lower valve body connected with the upper valve body. an upper valve seat is set in the upper valve body; a lower valve seat is set in the lower valve body; the upper valve seat and lower valve seat are set in coaxial direction; the upper valve body and lower valve body form three interval channels; the upper valve body is connected with the valve cap assembly; the valve spindle passes through the valve cap assembly and connects with the valve flap assembly; the sealing unit at the lateral surface of the valve flap assembly seals the valve flap together with the lateral surfaces of upper and lower valve seats. This utility model can conveniently realize electric control steadily without being affected by climatic change and resulting in vibration. Besides, this utility model adds a blockade function and saves a service valve. The inlet and outlet of the filter can be closed and compressed air can be adopted to wash out the stemming, so as to ensure the effect of reverse washing; the circular jet flow produced during the switching on and off of the valve has the function of self-cleaning. What is more, this utility model reduces the number of traditional transfer valve for filtration and reverses washing from four sets to two ones, thus simplifying the operation and save more space. The valve flap in this utility model is positioned longitudinally, which brings much facility for repair and maintenance.