Seal joint used for connecting bamboo-like prestressing force flat mouth plastic pipe with bolts and exhaust pipe

Abstract

The invention discloses a seal joint used for connecting a bamboo-like prestressing force flat mouth plastic pipe with bolts and an exhaust pipe. The seal joint is formed by carrying out butt joint on a first half flat mouth pipe and a second half flat mouth pipe; the butt joint face is fastened and combined by bolt fastener groups; the exhaust pipe is arranged at the outer edge of the first half flat mouth pipe; two big grooves, two small grooves and sealing gasket grooves are respectively formed in inner rings of the first half flat mouth pipe and the second half flat mouth pipe; the two big grooves are respectively formed in two sides of the length middle points of the first half flat mouth pipe and the second half flat mouth pipe; the two small grooves are respectively formed in outer sides of the two big grooves; one sealing gasket groove is formed in each side of each big groove; and a flat mouth sealing gasket is arranged in each sealing gasket groove. The seal joint has the beneficial effects that the flat mouth sealing gaskets press two sides of a big flat mouth rib wrapping the bamboo-like prestressing force flat mouth plastic pipe; the construction sealing effect is good; the duct grouting compactness and plumpness are facilitated; the operation of fixing the seal joint by the bolts is simple and convenient; and the grouting quality can be improved by the exhaust pipe.

Description

technical field [0001] The invention relates to a sealing joint of a plastic pipe in the construction of a prestressed steel strand, in particular to a sealing joint connecting a bamboo-shaped prestressed flat plastic pipe with a bolt and an exhaust pipe. Background technique [0002] In recent years, with the development of the construction industry, prestressed concrete has been gradually promoted. Compared with traditional reinforced concrete, prestressed concrete has the advantages of high strength and material saving. Now the most advanced technology is vacuum grouting and post-tensioning prestressing. concrete technology. Its feature is to pour concrete first, embed metal pipes or plastic pipes in the concrete in advance, and then pull the prestressed steel strands in the pre-embedded metal pipes or plastic pipes after the concrete reaches a certain strength, and then use anchors to install the prestressed steel strands. The steel strands are fixed on the components, ...

AI Technical Summary

Problems solved by technology

[0003] The more advanced pre-embedded pipe fittings are bamboo-shaped prestressed flat-mouthed plastic pipes. The bamboo-shaped prestressed flat-mouthed plastic pipes have high strength and good quality. However, in site construction, this kind of plastic pipes generally adopts thermoplastic welding. , or connected with each other by wrapping sealing tape. These connection methods are cumbersome to deal with, and exhaust pipes cannot be installed, and the sealing effect is poor, and air leakage is easy to occur, which affects the compactness and fullness of the vacuum prestressed channel grouting

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