Patent ID: 9079053
Filing Date: 2015-07-14
Classification: A62C,F16K,G08B

Abstract:
1. A water flow detection device, comprising: a cylindrical main body connected to a pipe of a fire extinguishing system; a valve body having a check valve structure provided inside the main body; a switch device for detecting water flow by a rotation of the valve body and outputting a predetermined signal; a detection rod having one end and an other end in a longitudinal direction, the other end protruding to the outside of the main body, the one end being provided inside of the main body and in contact with a portion of the valve body inside the main body, the portion being opposite to a bearing of the valve body and rotating in an opening direction, the other end switching ON/OFF of the switch device when the valve body rotates in the opening direction; and an urging member for biasing the other end of the detection rod to urge the one end of the detection rod in the opening direction of the valve body.