| 摘要 |
<p>The present invention relates to an elbow drainage pipe connected to a reducer to be mounted inside an inlet of an elbow (40) extended and connected to a reducer (50) in a space between pipes for discharging domestic sewage in order to discharge the entire quantity of sewage flowing in without resistance and to prevent bad smell from flowing backward from an outlet. To achieve this, the elbow drainage pipe comprises: a main body pipe (10) made of a soft elastic member with an open side to get gradually thinner from a central part (15) of a pipe body part (13) toward a surface contact part of a contraction pipe (14a, 14b); an asymmetric lower disk (20) including a through-hole (22) and a right inclined surface (21) of which the upper surface gets gradually smaller toward the through-hole (22), wherein an upper outer side of the pipe body part (13) is inserted into and adheres to the through-hole (22); and an asymmetric upper disk (30) including a through-hole (32) having the same diameter as the inlet (12) and a left inclined surface (31) of which the lower surface gets gradually greater toward the through-hole (32). Therefore, the pipe body part (13) provided in the main body pipe (10) is inserted into the asymmetric lower disk (20) to be joined to the asymmetric upper disk (30).</p> |
