Unpowered flow-limiting type intercepting well

The utility model discloses an unpowered flow-limiting type catch basin which comprises the ground, a main body penetrates through the bottom of the ground, a cover plate is arranged at the top of the main body, a dirt blocking wall is fixedly connected to the middle of the bottom of the main body, a filter plate is fixedly connected to the top of the dirt blocking wall, and a gate limiting box is fixedly connected to the lower portion of the inner wall of the left side of the main body. The top of the gate limiting box penetrates through and is slidably connected with a movable gate, and the inner wall of the upper portion of the body is fixedly connected with an anti-falling plate. According to the utility model, the first rope on the fixing bolt is unfastened firstly, then the movable ladder in the fixed ladder moves downwards, when the movable ladder moves to a designated position, the movable ladder stops, then a worker can carry out maintenance work, and after maintenance is completed, the movable ladde