Pressure release valve and vacuum feces collection system employing valve for railway vehicle

• Main Authors: ZHU CHUNLING, NIU XIXIN, CHAI FUJI, WANG XIANBIN, LI CHANGBIAO
• Format: Patent
• Language: English
• Published: 27.05.2015
• Subjects: ACTUATING-FLOATS; BLASTING; BODY DETAILS OR KINDS OF RAILWAY VEHICLES; 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; PERFORMING OPERATIONS; RAILWAYS; TAPS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VALVES; WEAPONS

The utility model relates to a pressure release valve and a vacuum feces collection system employing the valve for a railway vehicle. The pressure release valve comprises a valve body, and a soft valve element which is arranged in the valve body; a valve element fixing plate is fixed in the valve body; a flow guide hole and a valve element fixing hole are formed in the valve element fixing plate; the soft valve element comprises a disc-shaped surface, and a fixing column which is arranged in the middle of the disc-shaped surface; a tapered convex ring is arranged on the fixing column; the disc-shaped surface is clung to one side surface of the valve element fixing plate; the fixing column is fixed into the valve element fixing hole; the tapered convex ring is propped to the other side surface of the valve element fixing plate. According to the pressure release valve, the valve element is integrally fastened to the valve element fixing plate through the fixing structure; in addition, the valve element fixing plate can be dismounted from the lower valve body, which facilitates the mounting and repairing of the valve element.