Antifouling environment -friendly tubular product of hydraulic and hydro -power construction drainage

The utility model discloses an antifouling environment -friendly tubular product of hydraulic and hydro -power construction drainage, arrange the mouth including body, check valve and sewage, body internally mounted has the photoemission ware, the body passes through flange and is connected with the check valve, check valve one side is provided with the valve body, be provided with the control wrench on the valve body, photoelectric receiver is installed to the inside other end of body, the utility model discloses simple to operate, reasonable in design, body internally mounted has the photoemission ware, the photoemission ware is with regard to at set intervals emit light bundle, the light beam is parallel with the body, , the light beam will be blocked when meetting the barrier, the panel heater is convenient for installation, and reasonable design, the photoelectric receiver of body other end setting will can not receive the light beam, at this moment, photoelectric receiver just gives external control sys