Combined sealing sleeve for butt-jointing two pipelines and manufacturing method of sealing sleeve

Abstract

The invention discloses a combined sealing sleeve. The sleeve comprises a casing pipe for butt-jointing two pipelines and a sealing ring mounted on the casing pipe in a sleeving manner and used for sealing the two pipelines butt-jointed by the casing pipe, wherein the sealing ring comprises a main body part sleeving outer walls where the two pipelines are butt-jointed, a pair of thrust parts arranged at two ends of the main body part and used for preventing the main body part from axially moving during mounting of the pipelines, a limiting part arranged on the inner wall of the main body part and used for limiting mounting positions of the two pipelines butt-jointed by the main body part as well as anti-seepage parts arranged on the inner wall of the main body part and used for preventing leakage of liquids in the pipelines after the two pipelines are butt-jointed by the main body part. The combined sealing sleeve can butt-joint the two pipelines conveniently and efficiently, is economical, has the good leakage-proof effect and can be produced in a large batch, the production efficiency is high, and the production cost is reduced. Besides, the invention further provides a manufacturing method of the combined sealing sleeve.

Description

technical field [0001] The invention relates to the technical field of pressure pipelines for water supply and drainage, chemical industry, etc., in particular to a combined sealing sleeve suitable for docking medium and large-diameter pipelines of various materials with smooth outer surfaces produced by continuous winding, pultrusion and other processes. Production method. Background technique [0002] With the popularization and application of various new types of pipes, the degree of automation of pipe production equipment continues to increase. For example, pipes produced by continuous winding, pultrusion and other production processes have smooth outer surfaces and the same specifications, and most of their installation and connection methods are made of steel. Hoops or fiber resin-wound FRP main body sleeves have high cost and low benefit, and can no longer meet the requirements of mass-produced pipes for pipe fittings; and in the production of modern enterprises, the ...

AI Technical Summary

Problems solved by technology

[0002] With the popularization and application of various new types of pipes, the degree of automation of pipe production equipment continues to increase. For example, pipes produced by continuous winding, pultrusion and other production processes have smooth outer surfaces and the same specifications, and most of their installation and connection methods are made of steel. Hoops or fiber resin-wound FRP main body sleeves have high cost and low benefit, and can no longer meet the requirements of mass-produced pipes for pipe fittings; and in the production of modern enterprises, the protection of the production environment and the efforts to reduce the labor intensity of workers, etc., All put forward higher requirements for the production technology of pipe fittings

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