Overflow valve and overflow valve-adopted asphalt discharging pipe structure of joint sealing machine

• Main Authors: LIU YONGJUN, LUO XIONGHUI, DAI ZEHAN, DU YEWEI, DENG HE, HUANG KAIJIN, WU ZHONGMIN, XIAO YONG, XUE HAOSHUAI, JIANG MIN
• Format: Patent
• Language: Chinese; English
• Published: 19.06.2013
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The utility model relates to an overflow valve and an overflow valve-adopted asphalt discharging pipe structure of a joint sealing machine. The overflow valve comprises a valve body and a valve core, wherein a fluid inlet and a fluid outlet are formed on the valve body; the valve core is arranged in the cavity of the valve body, and an adjusting device is arranged between the valve body and the valve core; the valve core is provided with a an initial state and a working state, when in the initial state, the valve core completely seals the fluid outlet, while in the working state, the fluid from the fluid inlet pushes the valve core to overcome the acting force of the adjusting device and move along the cavity of the valve body so as to communicate the fluid inlet, the valve body cavity and the fluid outlet; and moreover, the size of the connecting port between the fluid outlet and the valve body cavity can be changed according to the intensity of the fluid pressure. The overflow valve has the advantages of si