Pipeline fastening clamping ring and machining technology

A processing technology and fastening card technology, applied in the direction of pipeline connection layout, pipe/pipe joint/pipe fittings, mechanical equipment, etc., can solve the problems of easy cutting, large proportion of pipe fittings, high price of brass material per ton, and increase friction. The effect of force and anti-backoff, preventing the existence of gaps, and strong workability

CN109340494AActive Publication Date: 2019-02-15TAIZHOU BANCHENG HVAC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-02-15

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Abstract

The invention relates to the building pipeline connection technology, in particular to a pipeline fastening clamping ring. The clamping ring is of a cylindrical ring structure. The diameter of the inner wall of the clamping ring is in clearance fit with the outer diameter of a matched pipe, the clamping ring is made from crosslinked polyethylene materials with strong shrinkage performance, no chamfering structure is arranged at the front end of the inner wall of the clamping ring, and the inner wall of the clamping ring is provided with knurling teeth. The invention further discloses a knurling tooth machining technology. The structure of a traditional metal clamping ring is changed, the crosslinked polyethylene materials which are elastic, resistant to high temperature and capable of changing along with the environment temperature are adopted, holding force is kept, and the problem that a gap exists between the pipe and a pipe fitting main body and the problem that the clamping ring is rotated or loosened are solved. Meanwhile, plastic materials low in mass and low in price are adopted, the cost is low, market competitiveness is formed, and feasibility is high.
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Description

technical field

[0001] The invention relates to the connection technology of building pipelines, in particular to a technology of sliding tight pipe fittings. Background technique

[0002] Piping technology continues to evolve with the advancement of new piping materials. In the construction pipeline market, especially heating pipelines, the demand for high-temperature and pressure-resistant pipelines such as PE-X, PE-RT, and PAP has continued to increase in recent years. above. The sliding tight pipe fitting is shown in the announcement number CN 205101722U. The pipe fitting has specific structural dimensions described in ASTM F2080-02 "Standard Specification for Cold Expansion Fittings with Metal Compression Sleeves for Cross-Linked Polyethylene (PEX) Pipes". The sliding tight pipe fitting is composed of a joint body and a sealing ring. There is no rubber seal in the pipe fitting, and the whole is made of brass. There is no possibility of aging. It can be installed in th...

Examples

Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Such as figure 1 with figure 2 As shown, a pipe fastening collar, the collar 1 is a cylindrical ring structure, the diameter of the inner wall 10 of the collar 1 is matched with the outer diameter of the matching pipe 2, and the collar 1 is made of cross-linked polyethylene material with strong shrinkage There is no chamfer structure at the front end of the inner wall of the collar 1; knurl teeth 11 are provided on the inner wall 10 of the collar 1.

[0026] Compared with the existing technology of sliding and tightening pipe fittings, the pipe fitting main body 9 of the present invention is consistent with the prior art, the collar is made of non-metallic material, and the cross-linked polyethylene material itself is a high-temperature and weather-resistant material with high resilience and holding capacity. Tightening force, expansion of more than 15%, retr...