GATHERING DRAINAGE BOX OF EARTH AND SAND INFLOWPREVENTION APPARATUS

摘要

PURPOSE: An impurity inflow prevention device for a storm overflow chamber is provided to enable an operator to easily control sewage inflow by adjusting the position of a rotary opening/closing plate using a nut. CONSTITUTION: An impurity inflow prevention device(100) for a storm overflow chamber comprises a water flow guide plate and a water quantity control plate. The water flow guide plate is formed on the front of a frame. The water quantity control plate is coupled with the water flow guide plate by a position control unit. The water quantity control plate is classified into a joint part in a horizontal state and a tilt angle retainer in an incline state by a bending portion.