Plugging-in retracting device for cast iron drainage tube

Plugging-in retracting device for cast iron drainage tube

  • CN 2,227,779 Y
  • Filed: 08/16/1995
  • Issued: 05/22/1996
  • Est. Priority Date: 08/16/1995
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of iron drain-pipe spigot and socket type expansion bend, it is characterized in that it is made up of bell-and-spigot pipe (1) and telescopic pipe (2), bell-and-spigot pipe (1) collar extension internal diameter and iron drain-pipe road external diameter suitable for reading matches, and connect as one with spigot and socket type cement, bell-and-spigot pipe (1) internal orifice external diameter and telescopic pipe (2) internal orifice internal diameter match and the socket that coincide is an one, be provided with sealing rubber ring (3) between them, with water leakage, telescopic pipe (2) collar extension external diameter and iron drain-pipe road end opening internal diameter match, also adopt spigot and socket type cement to connect as one, outer end, bell-and-spigot pipe (1) collar extension place is connected with fixed bearing (4), to fixedly connected with the body of wall corresponding position.

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