Anti-falling sealing structure for joint of ductile cast iron pipe

Abstract

The invention discloses an anti-falling sealing structure for a joint of a ductile cast iron pipe, and relates to the technical field of pipe sealing. A limiting table is fixedly arranged on a connecting pipe in a sleeved mode and arranged between a left pipe body and a right pipe body, annular grooves are formed in the inner walls of the left side and the right side of the limiting table, the pipe bodies are rotatably inserted into the annular grooves, the number of limiting rings is two, the two limiting rings are respectively arranged and fixed to the corresponding pipe bodies in a sleeved mode, the limiting rings are arranged at the outer sides of the limiting table, the number of limiting frames is four, the left inner clamping corner and the right inner clamping corner of each limiting frame are respectively arranged at the outer sides of the corresponding limiting rings in a clamped mode, a left limiting clamping block and a right limiting clamping block of each limiting frame are respectively arranged at the outer sides of the corresponding limiting rings in a clamped mode, a plurality of limiting insertion blocks are fixed to the inner ring walls of the limiting frames in a bilateral symmetry mode, and the limiting insertion blocks are inserted into limiting grooves formed in the outer ring wall of the limiting table. The ductile cast iron pipe can be tightly connected, the sealing performance is guaranteed, operation and installation are easy, and the work efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of pipe sealing, in particular to a nodular cast iron pipe joint anti-dropping sealing structure. Background technique [0002] Ductile iron pipe is a kind of cast iron pipe. Nodular cast iron pipe is a pipe made by high-speed centrifugal casting of centrifugal ductile iron machine after adding nodularizing agent to casting molten iron above No. 18. It is mainly used for the transportation of tap water. It is a tap water pipeline. Ideal choice of materials; ductile iron pipes need to be butt-connected and sealed during use. When the existing ductile iron pipes are butt-jointed, gaps are prone to appear at the joints, causing tap water in the ductile iron pipes to leak out, resulting in waste of water resources . Contents of the invention [0003] The object of the present invention is to aim at the defects and deficiencies of the prior art, and provide a simple structure, reasonable design, and easy-to-us...

AI Technical Summary

Problems solved by technology

[0002] Ductile iron pipe is a kind of cast iron pipe. Ductile iron pipe is a pipe made by high-speed centrifugal casting of centrifugal ductile iron machine after adding nodularizing agent to casting molten iron above No. 18. It is mainly used for the transportation of tap water. It is a tap water pipeline. Ideal choice of materials; ductile iron pipes need to be butt-connected and sealed during use. When the existing ductile iron pipes are butt-jointed, gaps are prone to appear at the joints, causing tap water in the ductile iron pipes to leak out, resulting in waste of water resources

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