Flange seal for pipe and repair of pipes

Abstract

A watertight flange for jointing and repairing pipes is provided that includes a ring-shaped sealing gasket (2) and a metal body (3) that is perimetrically coupled on the circular surface of the ring-shaped gasket (2). The sealing gasket (2) and the metal body (3) are pressed by closing and clamping elements externally incorporated determined by bolts (4) transversally inserted in respective pairs of parallel through-axles (5) and joined integral with the metal body (3). The metal body (3) has approximately the same length as the ring-shaped gasket (2), with respective lateral ends perpendicularly folded inward and having radial cuts (31) that define related rims (32) that determine retaining means of the said ring-shaped gasket (2) in the metal body (3) and, eventually, means interlocking the watertight flange (1) itself on the surface of the pipes to be jointed.

Claims

1. A watertight flange for jointing and repairing pipes comprising: a ring-shaped sealing gasket having a circular surface, a metal body having a metal body length and lateral ends perimetrically coupled on the circular surface of the ring-shaped gasket and having a plurality of U-shaped radial cuts extending along a portion of the metal body length; and closing and clamping elements comprising: a first pair of bolts on opposing sides of the metal body from a second pair of bolts; and a first pair and a second pair of parallel through-axles on opposing sides of the metal body, each individual through-axle of the pairs of parallel through-axles having a distally oriented external flat portion and through which an individual bolt from one of the pairs of bolts is transversally inserted, the first and second pairs of parallel through-axles joined integral with the metal body wherein the metal body length is the same length as the ring-shaped gasket and the metal body lateral ends are perpendicularly folded wherein a first pair of nuts engage the first pair of bolts and the respective external flat portions, where the first pair of bolts extend beyond the distally oriented external flat portion to encompass the first pair of parallel through-axles, and a second pair of nuts engage the respective external flat portions and the second pair of bolts that extend beyond the distally oriented external flat portions, the second pair of bolts inserted into the second pair of parallel through-axles to achieve closing and clamping of the watertight flange.

2. The watertight flange of claim 1 wherein the ring-shaped sealing gasket is formed of ethylene propylene diene monomer rubber.

3. The watertight flange of claim 1 wherein the metal body is formed of steel.

4. The watertight flange of claim 1 wherein the plurality of radial cuts extend between the pairs of parallel through-axles.

Description

DESCRIPTION OF THE DRAWINGS

(1) To complement the description that is being done and in order to assist to best understanding the characteristics of the invention, attached to this specification as an integral part thereof, there is a drawing in which for illustration and non-limiting purpose the following has been represented:

(2) The FIG. 1.—It shows a schematic front elevation view of an example of the watertight flange for jointing and repairing pipes, object of the invention, the main parts and elements that it comprises can be seen;

(3) The FIG. 2.—It shows a schematic side elevation view of the 15 example of the watertight flange for jointing and repairing pipes, according to the invention, shown in the FIG. 1, the configuration of its parts and elements can be seen from the said point of view; and

(4) The FIG. 3.—It shows a part view of the section of the flange 20 according to the section A-A shown in the FIG. 2, the configuration of the profile of its main parts can be seen.

PREFERRED EMBODIMENT OF THE INVENTION

(5) At the sight of the mentioned figures, and in accordance with the numerals adopted, a non-limiting example of embodiment can be seen in them of the watertight flange for jointing and repairing pipes of the invention, which comprises what is mentioned and disclosed in details thereafter.

(6) Thus, as it can be seen in the said figures, the flange (1) of the invention is formed, in a well-known manner, out of a ring-shaped sealing gasket (2) for example of rubber, and a metal body (3), for example of steel, that is perimetrically coupled on the circular surface of the ring-shaped gasket (2) pressed by closing and clamping elements externally incorporated and that are determined by bolts (4,4′) transversally inserted in respective pairs of parallel through-axles (5,5′).

(7) More specifically, in the example that is shown in the figures, and that represents the preferred embodiment of the invention, the metal body (3) of the flange (1) is constituted by two half-cylinders (3a) joined by two sets of closing and clamping elements located in points diametrically opposite on the ring-shaped gasket (2), each set comprising two bolts (4,4′) inserted in each through-axles (5,5′) that, in turn, are joined integral to the said half-cylinders forming the metal body (3) by means of respective extensions (3b) fixed integral to each other.

(8) In any case, the said watertight flange (1) is distinguished by the fact that the metal body (3), that, at least in the said half-cylinders (3a), possesses approximately the same length as the ring-shaped gasket (2), presents its respective lateral ends perpendicularly folded inwards it and provided with a plurality of radial cuts (31) that define related rims (32) that constitute retaining means of the said ring-shaped gasket (2) in the metal body (3) and, eventually, means interlocking the watertight flange (1) itself on the surface of the pipes to be jointed.

(9) According to the FIG. 1, the configuration of one of the lateral folded ends of the metal body (3) can be seen with the radial cuts (31) defining the plurality of rims (32) that retain the edge of the ring-shaped gasket (2).

(10) In the section of the FIG. 3 the said retention of the rims (32) can be seen by both ends of the ring-shaped gasket (2), which presents, close to both edges, a thickening (21) that, oriented toward the center of the gasket, defines a chamber (22), which, when the pipes are to carry fluids under high pressure, acts as a retaining means of the said fluid, therefore the rims (32) also mean strengthening the pressure exerted on the said edges of the ring-shaped gasket (2).

(11) In addition, preferably, the bolts (4,4′) are inserted without threading in holes 15 made to that effect in the through-axles (5,5′) and they are threaded by the end opposite to the said insertion, in respective nuts (6,6′) to achieve closing and clamping the flange (1).

(12) The nature of this invention being sufficiently described, as well as the manner to implement it, it is not deemed necessary to extend any longer its explanation in order that any person skilled in the art understands its extent and the advantages derived from it, and it is stated that, within its essence, it can be implemented in other embodiments that differ in detail from the one indicated for example purpose, to which the protection sought shall apply, provided that its main principle is not altered, changed or modified.