Self-compensating fastening type large-diameter fast joint

Abstract

The invention relates to a self-compensating fastening large-caliber fast adaptor which is used for butt jointing of two pipes and solves the defects of high cost and poor practicability in the prior art. The invention is characterized in that: the outer circumference of pipe fittings is encircled by a rubber sealing boot 2, a convex ring of which is arranged among the pipe fittings. Left and right sleeves 3 and 4 are respectively sheathed on the pipe fittings, and pressed on the outer surface of the rubber sealing boot 2. A trough 9 of the left sleeve 3 is meshed with a projection 12 of the right sleeve 4. A cotter pin 8 fixedly locks the left and right sleeves 3 and 4. A claw 5 is provided with a pointed teeth on the concave surface, arranged in dovetail inner cone troughs 11 and 14 in the left and right sleeves 3 and 4, pasted on the outer wall of the pipe fittings, can slide along the axial direction of the pipe fittings and concentrically contract to occlude and tighten the pipe fittings. The fast adaptor is high, middle and low pressure resistant. The self-compensating fastening omni-directional secure seal with firm soft syncretic is provided without welding or flange type, not being opened with trench type, and not being provided with a compensator additionally, thereby saving labor and time, especially under the condition of severe environment, the fast adaptor of the invention has the advantages of being convenient and fast, low cost, energy saving and environmental protection. The fast adaptor of the invention is used for connecting two pipes through which the fluid is to be conveyed.

Description

technical field [0001] The invention relates to a pipe joint quick joint for butt-connecting two pipe fittings to be transported fluid, in particular to a self-compensating fastening type that can automatically lock the connected pipe fittings, and combine rigidity and flexibility with an all-round safety seal. Large diameter quick connector. Background technique [0002] According to the investigation, in today's world, the original traditional welding method, flange method and the grooved pipe joint developed in the 1990s are used in the large-caliber high, medium and low pressure pipe joint technology for conveying fluids. These pipe connection technologies, when arc welding steel flanges and pipes, pipes and pipes, or when rolling grooves, will destroy the zinc layer and internal anti-corrosion layer of the steel pipe, and require secondary anti-corrosion operations. Construction There are many machines or equipment used in the machine, time-consuming, high cost, not en...

AI Technical Summary

Problems solved by technology

Its shortcomings are: there are many parts in the structural design, and the manufacturing cost is high

The nut jacket, left and right tightening rings, and left and right plastic protective covers are all threaded connections. During manufacturing, pipe fittings with a pipe diameter greater than 300MM are difficult to process due to the limitation of threading equipment. Promote the application on the pipeline

In addition, after the precision casting of the pipe joint, it needs to be re-threaded twice, which increases the manufacturing cost, which is not conducive to the application of low-cost, mass-produced, high-efficiency production and promotion, and has poor practicability.

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