Siltation-preventing non-return drainer

• Main Authors: JING CHAOQING, CHU FENGCHI
• Format: Patent
• Language: Chinese; English
• Published: 19.01.2011
• 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 belongs to the technical field of valves, in particular to a siltation-preventing non-return drainer used in hydraulic engineering. The non-return drainer adopts the technical scheme that a valve body is included, wherein a water inlet is formed at the bottom of the valve body; a water outlet is arranged at the upper end of the valve body; a water non-return mechanism is arranged in a cavity of the valve body; a replaceable water outlet net cover body is arranged at the water outlet of the valve body; a spacer connected with the water outlet net cover body into a whole is arranged thereon; and a cover body with a rim ring is buckled on the spacer. The siltation-preventing non-return drainer can effectively solve the problems of the blockage of the water inlet and the loss of the underground water drain function caused by the reason that sludge or quick sand sunken to the bottom of running water directly passes through a water outlet hole on the water outlet net cover body and flows back to t