Locking notch compression type connecting pipe fitting

Abstract

The invention discloses a lock compression connecting pipe unit, which comprise a connection joint, and a structure with a metal pipe inside thereof. The connection joint is provided with an ejection piece lock, the outer round end of the ejection piece is provided with thread teeth, the metal pipe and the connection joint are connected when the ejection piece reaches the outer convex rib curved surface of the metal pipe, the ejection piece lock of the connection joint locks the thread teeth of the ejection piece to seal. The connection is convenient, the sealing is reliable, and the operation is convenient, thereby improving work efficiency, eliminating insecure adhesion and deficiency in reducing inner diameter in a recess, and being not influenced by over temperature. The material of a single pipe unit is saved by 50% and above, thereby overcoming the disadvantage of high accumulative cost due to more materials used for the connecting pipe so as to be favorable for implementation and application.

Description

1. Technical field: [0001] The invention relates to a locking compression type connecting pipe fitting, relates to the technical field of plumbing pipes and pipe connecting pipe fittings thereof, and is applied to thin-walled metal pipes. 2. Background technology: [0002] At present, the plumbing pipes supplied on the market basically use traditional galvanized pipes, connected with pipe connectors with inner wires, which are very easy to oxidize and corrode, which affects the actual service life and pollutes water quality. Aluminum-plastic composite pipes can To overcome and reduce water pollution, because in water, the aluminum skin in the middle is easy to corrode and lose its strength, causing the aluminum-plastic composite pipe to break and cause water leakage, and because the aluminum-plastic composite pipe is easy to be heated and contracted, after a long time, It affects the tightness of the buckle connector, and the water leakage phenomenon occurs from time to time...

AI Technical Summary

Problems solved by technology

[0002] At present, the plumbing pipes supplied on the market basically use traditional galvanized pipes, connected with pipe connectors with inner wires, which are very easy to oxidize and corrode, which affects the actual service life and pollutes water quality. Aluminum-plastic composite pipes can To overcome and reduce water pollution, because in water, the aluminum skin in the middle is easy to corrode and lose its strength, causing the aluminum-plastic composite pipe to break and cause water leakage, and because the aluminum-plastic composite pipe is easy to be heated and contracted, after a long time, It affects the tightness of the buckle connector, and the water leakage phenomenon occurs from time to time. Then, the stainless steel-plastic composite pipe is used to replace the above three pipe materials. Connecting parts are bonded together, which requires high bonding process requirements and relatively lacks technical support, so it is difficult to be used in occasions with a certain temperature; 2-Adopt the concave method at the interface of the pipe material and add the pipe connection pipe fittings for sealing Connection, the problem occurred at the cost of sacrificing the inner diameter of the pipe, and the connection is relatively complicated. 3-There is another kind of pipe fittings that use protruding pipe fittings at the interface of the pipe material to seal the connection through the pipe connecting pipe fittings. The inner diameter is maintained, and the connection method is relatively advanced. , but due to the large amount of materials used in connecting pipe fittings, the cost of a single piece of pipe fittings is high, and the cumulative cost remains high, which directly affects the promotion and application of the connecting pipe fittings

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