PT8274U - UNIAO FOR PIPES - Google Patents

Description

// .(/ £ 27 *

This utility model relates to a pipe joint consisting of a male part and a female part designed to be sealed in any position, · about the axis of the parts, in which the two parts are engaged .

There is a wide variety of tab joints, most of which the membrane or lip seal is located in the zone (5) of Figure 2, possibly with another design. These seals seal by squeezing the seal at the periphery of the water-conducting pipe. The present invention provides an improvement to the existing joints as the seal is spaced apart from the periphery of the channel, cylindrical surface 5, and is located in a recess (7) which confines the seal allowing its crushing by the surface (6) to be performed in better conditions. The separation of the two functions: juxtaposition of the water conduction sections and sealing allows a more robust construction of the union and better guarantee of tightness. The attachment between the two parts of the joint can be accomplished by the already known systems or, as provided in the figures, by two

hooks (8) and two levers (12) fixed to the male part in two generators symmetrical with respect to the axis of the joint. This fastening system applies pressure to the seal required to ensure leaktightness and allow the two parts to be connected whatever the position of the two parts around the axis of the joint. The following description is made with reference to the attached figures which represent:

Figure 1 - Elevation, top, and cut of the two parts of the union when attached, bottom.

Figure 2 - Cut of several separate union pieces. The male part (1) of the joint in addition to the area of attachment to the pipe, the attachment grooves of the lever (12) and hook (8) and the flow surfaces, not referenced in the figures, has two cylindrical surfaces (4) and (5) for guiding inside the female part (2) and the surface (6) which will tighten the ring (3) against the recess (7) of the female part. The female part 2, beyond the area of attachment to the tube, not referenced in the figure, has two cylindrical surfaces 4 and 5 which guide the surfaces referenced therein.

numbers of the male part 1 of the recess 7 where the ring 3 and the collar 10 engages and confines where it engages the hook 8 through the end 9. This hook is connected via the shaft 11 to a lever 12 which closes until it is juxtaposed to the outer surface of the male part by pressing on the ring 3. The closing operation is performed by rotating the lever, inter-resistant, around the axis, fulcrum, (13).

In figure 1 the two parts connected with the hook (8) and the lever (12) are shown in the closed closed position, under pressure. The ring 3 is a torus whose cross-section on the side of the female part 2 has homogeneous geometry of the recess 7 and the side of the male part 1 juxtaposes on the surface 6. 3

Claims (1)

A union for pipes consisting of a male part and a female part, characterized in that the male part (1) penetrates the female part (2), guided by two cylindrical surfaces (4) and (5) of different radii, and penetration occurs until the surface 6 of the male part 1 strikes against the sealing ring 3 which is housed in the recess 7 in the female part 2. 2. A pipe joint consisting of a male part and a female part according to claim 1, characterized in that the locking between the two parts is effected by a hook (8) on the male part, the end of which (9) engages on the collar (10) of the female part so that one part can rotate relative to the other about the axis of the union. Lisbon, April 8, 1991