RU36719U1 - PIPE CONNECTION - Google Patents

Description

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Pipe connection

The invention relates to pipe fittings, in particular, to pipe joints by cold pressing.

It is known to connect pipes in which the pipe is connected to the fitting by means of a crimping element made in the form of a sleeve, the protrusions being made on the fitting on the outer cylindrical surface with the formation of recesses between them for flowing of the pipe material during crimping (see GB No. 2250329 A, 03.06. 1992, CL F 16 L 33/207).

It is known to connect pipes with a fitting, on the outer cylindrical surface of which annular grooves are made to fill them with pipe material when crimped by a press-fit sleeve previously put on the pipe (see US No. 5961157 A, 05.10.1999, class F 16 L 33/207). This compound can be considered as a prototype of the claimed utility model.

A disadvantage of the known pipe connections is the low reliability of the connection and the possibility of damage to the pipe at the time of installation.

The objective of the utility model is to create a pipe connection, allowing it to eliminate the disadvantages of known devices and increase the reliability of the connection by using the properties of the pipe material and the method of cold pressing the latter.

The technical result is achieved by the fact that in the connection of pipes containing a fitting with annular grooves on the outer cylindrical surface for filling the pipe with material, and an annular collar, and a sleeve covering 1;) there is a nozzle and at least one end contacting its end with the collar bushings made a chamfer on the inner surface.

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IPC 7 F16 L 33/207

The utility model is illustrated in the drawing, which shows the connection of pipes in section.

The pipe connection includes a housing 1, made in the form of a two-sided fitting, in the middle part of which a shoulder 2 is made, designed to fix the press gun. On the outer cylindrical landing surface of the housing 1 (fitting), annular grooves 3 are made to fill the pipe 4 with material when connected. The press-in sleeve 5 is put on the pipe 4 and is mounted abutting with its end in the collar 2 and at least one end of it has a chamfer on the inner surface.

The connection principle is based on the cold pipe pressing method. The pipe 4, made of cross-linked polyethylene and having a molecular memory, is cut off by a pipe expander (not shown in the drawing) and is mounted on the outer cylindrical landing surface of the housing I. Then, sleeve 5 is pressed in with a press gun, and sleeve 5 is previously put on on the pipe 4. The extended end of the pipe 4 is put on the fitting 1 and restores the original shape. The lead-in chamfer at the other end of the sleeve 5 makes it easy to put it on the pipe before installing the latter on the housing 1. Thus, a complete crimp of the pipe 4 along the annular grooves of the fitting is achieved, which ensures sealing and fixing of the connection. An inlet chamfer on the sleeve 5 reduces the effort of putting on the end of the pipe 4 and prevents the cutting of the pipe material when pressing the sleeve on the end of the pipe on the fitting .:

Claims (1)

A pipe connection comprising a fitting with annular grooves on the outer cylindrical surface for filling with pipe material and an annular collar, and a sleeve covering the fitting, characterized in that the sleeve is mounted abutting with its end in the collar and at least at one end thereof the end face is made with a chamfer on the inner surface.