Manhole structure with a needle box

摘要

As a structure of inspection well with deep pain,In the upper part of the wellhead, a plurality of sewer inducing holes are formed,The above-mentioned painful upper side is located in the drainage board of rainwater flowing into the wellhead,The above pain (80) forms a hanging Chin (81) on the lower side,The detachable separating floor (82) is fixed in the hanging Chin (81),In the separation floor board (82), a plurality of fixed protrusions (84) inserted in the sewage induction hole (85) have the characteristics of prominent formation and heavy pain, so when the heavy pain is cleaned regularly, it can be used very conveniently, so it can waste manpower. This is an effective idea to prevent and reduce the cost of wellhead maintenance.