| 摘要 |
The present invention relates to a drainage trap of an underground communication cable box. It includes a rainwater storage part which has a hole in a lower center and a stench prevention plate which has a rainwater inlet on an inner side and a partition formed in a lower part; a backflow prevention cap which has a cone shape and is located in the lower part of the rainwater storage part and has an upper side where at least two penetration holes protrudes to the upper part of the hole; a bead receiving part which is located in the lower part of the backflow prevention cap, has a side and a lower part which comprises a mesh net, and includes a bead for blocking the penetration hole of the upper plate; and a guide pipe which is located in the lower part of the bead receiving part and allows the rainwater to flow into the ground. According to the present invention, the drainage trap allows rainwater which flows into the connection part of a pipe and a communication cable box or the connection part of a pipe in a underground cable box to flow into the ground. Also, it can prevent the backflow of water, stench and a gas. |
