Double-diaphragm leak-proof switch valve

• Main Authors: PEI JIANING, YANG XIAOFEI, YANG PENG
• Format: Patent
• Language: Chinese; English
• Published: 05.05.2023
• 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 double-diaphragm leakproof switch valve which comprises a valve body, two groups of diaphragms and a valve rod, and the valve body comprises a longitudinally arranged mounting cavity and liquid runners horizontally arranged at two ends of the mounting cavity; a valve core pipe body is arranged in the mounting cavity, and a channel communicated with the two sections of liquid flow channels is arranged in the valve core pipe body; mounting ports are formed in the valve body and located at the two ends of the mounting cavity, and an upper fixing seat and a lower fixing seat are mounted at the mounting ports correspondingly; the diaphragm is hermetically connected in the mounting port, and the center of the diaphragm can be pressed to deform inwards or outwards; two ends of the valve rod are respectively supported between the two groups of diaphragms; the valve rod comprises a rod body and a blocking part arranged on the lower portion of the rod body, the rod body is arranged in the valv