The invention discloses an automatic vacuum blow-down valve and a blow-down device for a high-speed rail. The vacuum blow-down valve comprises a valve body and a valve rod. The valve body is provided with a sewage suction port and a sewage discharge port; a sealing partition plate is arranged in an inner cavity of the valve body and divides the inner cavity of the valve body into a sewage discharging cavity and a working cavity. The two ends of the valve rod are connected with a valve plate and a piston which are arranged at the two ends of the valve rod respectively. The valve plate abuts against the inner wall of the valve body and is used for communicating or separating the sewage suction opening and the sewage outlet. The piston is arranged in the working cavity, the piston moves in the working cavity and divides the working cavity into a breathing cavity and a negative pressure cavity, the breathing cavity is communicated with the external atmosphere, and the negative pressure cavity is communicated with the drain outlet; an elastic piece is arranged in the negative pressure cavity, and the two ends of the elastic piece are connected with the piston and the inner wall of the negative pressure cavity respectively. The vacuum blow-down valve and the blow-down device are convenient to operate and high in blow-down efficiency.
本发明公开了高铁用自动真空排污阀及排污装置,其中真空排污阀包括:阀体和阀杆;阀体开设有吸污口和排污口;阀体的内腔中设置有密封隔板,密封隔板将阀体的内腔分割为排污腔和工作腔;阀杆的两端连接有阀板和活塞,阀板和活塞分别设置于阀杆的两端;阀板与阀体的内壁相抵接,阀板用于连通或隔断吸污口与排污口;活塞置于工作腔内,活塞在工作腔内移动,且将工作腔分隔为呼吸腔和负压腔,呼吸腔与外部大气相连通,负压腔与排污口相连通;负压腔内设置有弹性件,弹性件的两端分别与活塞、负压腔的内壁相连接。本发明中真空排污阀及排污装置的操作便捷,且排污效率高。
Automatic vacuum blow-down valve and blow-down device for high-speed rail
高铁用自动真空排污阀及排污装置
11.04.2025
Patent
Elektronische Ressource
Chinesisch