ES1078456U

ES1078456U - Coupling for plastic tubes formed by profiles rolled in spiral. (Machine-translation by Google Translate, not legally binding)

Info

Publication number: ES1078456U
Application number: ES201231347U
Authority: ES
Inventors: Eduardo Adolfo PEREZ BERMEJO
Original assignee: Rib Loc S A; RIB LOC SA
Current assignee: NORDITUBE TECHNOLOGIES IBERICA, S.L.U.
Priority date: 2012-12-19
Filing date: 2012-12-19
Publication date: 2013-01-24
Anticipated expiration: 2022-12-19
Also published as: ES1078456Y; BR202013032246U2; CR20130651U; CO6870004U1; GT201300024U; PE20150215Z

Abstract

Coupling for plastic tubes, formed by spirally wound profiles, which have joining means on their sides by tongue and groove, forming the tube (1) when winding said profile helically and then joining the joints, by gluing and sealing the area (12), said coupling being characterized in that it is constituted by a rigid or semi-rigid sleeve (2) externally having a diameter equivalent to that of the inside of the tube (1) and in the central area and on the outside a protruding ring (21) that determines the sleeve portion that is inserted inside the ends of the corresponding tubes (1); while perimetrally and close to both ends it has means for retaining two rubber gaskets (3), which have at least one lip protruding, enrampado towards the center of the sleeve, whose outer diameter is slightly greater than the inner hollow of the tube ( 1). (Machine-translation by Google Translate, not legally binding)

Description

Acoplamiento para tubos de plástico, formados por perfiles enrollados en espiral. Coupling for plastic tubes, formed by spirally wound profiles.

Objeto de la invención Object of the invention

La presente invención, como su propio título indica, se refiere a un acoplamiento entre dos tramos de tubo de plástico, flexible. En particular, se trata de tubos que están formados por perfiles de plástico reforzados, que presentan en sus laterales medios de unión mediante machihembrado, formándose el tubo al enrollar el perfil helicoidalmente y posteriormente unir las juntas, con posterior pegado y sellado de la zona; todo ello para conformar un tubo apto para conducción de fluidos en lámina libre o baja presión. The present invention, as its own title indicates, refers to a coupling between two sections of flexible plastic tube. In particular, these are tubes that are formed by reinforced plastic profiles, which have on their sides joining means by tongue and groove, the tube being formed by winding the profile helically and subsequently joining the joints, with subsequent bonding and sealing of the area; all this to form a tube suitable for conduction of fluids in free sheet or low pressure.

En concreto este acoplamiento está destinado a tubos de PVC, de diámetro medio, entre 700 y 1.200mm., permitiendo la unión entre tubos a tope, mediante un manguito o fitting rígido, soldado interno y doble junta elástica que garantiza la estanqueidad de la unión. Specifically, this coupling is intended for PVC pipes, of medium diameter, between 700 and 1,200mm., Allowing the connection between butt tubes, by means of a sleeve or rigid fitting, internal welded and double elastic joint that guarantees the tightness of the joint .

Background of the invention

Tubos o tuberías de plástico obtenidos en la propia obra en la que se van a colocar, a partir de perfiles reforzados enrollados en espiral se conocen desde hace años. La patente australiana AU-607431, o su equivalente modelo de utilidad español U0245561 ya describen bandas tubulares enrollables helicoidalmente, que presentan exteriormente una serie de nervios longitudinales, entre los que se forman canales también longitudinales, en cuyos laterales definen unos medios de conexión de dicha banda en una configuración helicoidal, para formar un tramo de tubo. Los citados nervios y canales son paralelos y presentan una situación divergente hacia un lateral, determinando el ángulo que forman con el eje central de dicha banda el diámetro de la tubería. Plastic tubes or pipes obtained in the work in which they are to be placed, from spirally reinforced reinforced profiles have been known for years. The Australian patent AU-607431, or its equivalent Spanish utility model U0245561 already describes helical roller tubular bands, which externally present a series of longitudinal ribs, between which longitudinal channels are also formed, on whose sides they define means for connecting said band in a helical configuration, to form a tube section. The said ribs and channels are parallel and have a divergent situation towards one side, determining the angle formed by the central axis of said band the diameter of the pipe.

Algunas de estas tuberías, cuando han de trabajar en aplicaciones de altas prestaciones, con el fin de alcanzar el necesario grado de resistencia, se refuerzan con elementos generalmente metálicos, consistentes en perfiles que se colocan por la pared exterior del tubo, entre los resaltes, para aumentar la resistencia a la flexión del mismo. Este elemento reforzante consiste en una banda metálica de sección transversal en forma de “U” cuyos extremos libres se enganchan bajo dos nervios adyacentes. Este tipo de tuberías se ha descrito en la patente europea EP-0606349. Some of these pipes, when they have to work in high performance applications, in order to reach the necessary degree of resistance, are reinforced with generally metallic elements, consisting of profiles that are placed by the outer wall of the tube, between the projections, to increase the flexural strength thereof. This reinforcing element consists of a metal band of cross-section in the form of "U" whose free ends are hooked under two adjacent ribs. This type of pipe has been described in European patent EP-0606349.

Las ventajas de estos tubos, si se compara con los convencionales prefabricados, son destacables, basta considerar el peso y el volumen de los mismos de cara al transporte, sobre todo cuando los tubos se fabrican en un lugar muy distante del que se van a instalar. Además estos tubos tienen cierta elasticidad, consiguiendo con ello reducir las tensiones a las que se puede ver sometido el tubo en flexión, aumentando su resistencia a rotura respecto a otras tecnologías anteriormente utilizadas. The advantages of these tubes, when compared to the prefabricated conventional ones, are remarkable, it is enough to consider the weight and volume of them for transport, especially when the tubes are manufactured in a very distant place from which they will be installed . In addition, these tubes have some elasticity, thereby reducing the stresses to which the tube can be subjected to bending, increasing its resistance to breakage compared to other previously used technologies.

Tanto los tubos con refuerzo, como sin refuerzo, actualmente cuentan para su unión de un manguito o fitting, el cual se pega y sella con una masilla específica, ya sea interiormente (tubos visitables) o exteriormente. Este sistema, si bien es efectivo, necesita de un exhaustivo control durante su aplicación, en obra y aún así se producen desplazamientos y corrimientos del pegamento durante la inserción de los extremos de dos tramos de tubo, lo que acaba ocasionado fisuras por las que se producen fugas del fluido transportado. Both the tubes with reinforcement, and without reinforcement, currently have a sleeve or fitting for joining, which is glued and sealed with a specific putty, either internally (visitable tubes) or externally. This system, although it is effective, needs an exhaustive control during its application, on site and still there are displacements and sliding of the glue during the insertion of the ends of two sections of tube, which ends up causing cracks for which they leak the transported fluid.

Descripción de la invención Description of the invention

El objeto de la presente invención es propiciar un acoplamiento entre tramos de tubo del tipo precitado, que resulte efectivo, de forma que permita mantener unos costes de producción equivalentes al acoplamiento convencional, al tiempo que facilitar el montaje en la obra de dicho acoplamiento. The object of the present invention is to promote a coupling between sections of the aforementioned tube, which is effective, so as to maintain production costs equivalent to conventional coupling, while facilitating the assembly on site of said coupling.

En esta solución el acoplamiento está constituido por un manguito rígido o semi-rígido, que presenta exteriormente un diámetro equivalente al del interior de los tubos a unir, el cual en la zona central y por el exterior dispone de un anillo saliente que determina la porción de manguito que se inserta en el interior de los extremos de los tubos correspondientes. Perimetralmente y próximos a ambos extremos dispone de medios de retención de sendas juntas de goma que establecen un doble cierre estanco, consistentes en un cajeado perimetral, de ancho equivalente a las mismas, de forma que cada junta encaja elásticamente introducida en el correspondiente cajeado sin desplazarse lateralmente cuando el manguito se introduce en el interior del tubo. Cada una de estas juntas presenta al menos un labio saliente, enrampado hacia el centro del manguito, cuyo diámetro exterior es ligeramente mayor que el hueco interior del tubo, de forma que la junta queda aplastada estableciendo una unión estanca y cuando se introduce el manguito dentro del tubo se desplaza fácilmente, mientras que si tira de él hacia fuera presenta mayor dificultad, ya que la junta tiende a enrollarse formando un cordón entre ambos cuerpos. In this solution the coupling is constituted by a rigid or semi-rigid sleeve, which externally has a diameter equivalent to that inside the tubes to be joined, which in the central area and on the outside has a protruding ring that determines the portion sleeve that is inserted inside the ends of the corresponding tubes. Perimetrically and close to both ends it has means of retention of paths rubber seals that establish a double sealed seal, consisting of a perimetral recess, of equivalent width to them, so that each joint fits elastically inserted in the corresponding recess without moving laterally when the sleeve is inserted inside the tube. Each of these joints has at least one protruding lip, enrailed towards the center of the sleeve, whose outer diameter is slightly larger than the inner hollow of the tube, so that the joint is crushed establishing a tight joint and when the sleeve is inserted inside the tube moves easily, while pulling it out presents greater difficulty, since the joint tends to roll forming a cord between both bodies.

Descripción de las figuras Description of the figures

Para complementar la descripción que se está realizando y con objeto de facilitar la comprensión de las características de la invención, se acompaña a la presente memoria descriptiva un juego de dibujos en los que, con carácter ilustrativo y no limitativo, se ha representado lo siguiente: To complement the description that is being made and in order to facilitate the understanding of the characteristics of the invention, a set of drawings is attached to the present specification in which, for illustrative and non-limiting purposes, the following has been represented:

La figura 1 muestra una vista en alzado, parcialmente seccionada de un acoplamiento efectuado entre dos tubos (1) de este tipo. Figure 1 shows an elevation view, partially sectioned, of a coupling made between two tubes (1) of this type.

La figura 2 representa el manguito (2) que conforma la base de este acoplamiento. Figure 2 represents the sleeve (2) that forms the base of this coupling.

Realización preferente de la invención Preferred Embodiment of the Invention

Como se puede observar en las figuras referenciadas cada tramo de tubo (1) está formado por un perfil de PVC, o un material plástico similar, que presenta una serie de nervios rigidizadores (11) que discurren divergentemente con respecto a los laterales del perfil, de forma que al enrollarse este perfil helicoidalmente y efectuar la unión de sus laterales mediante machihembrado y posterior pegado y sellado de la zona (12) se forma un tubo (1) con una pared interior lisa, que resulta apto para conducción de fluidos en lámina libre. As can be seen in the referenced figures, each section of tube (1) is formed by a PVC profile, or a similar plastic material, which has a series of stiffening ribs (11) that run divergently with respect to the sides of the profile, so that when this profile is wound helically and the joining of its sides by means of tongue and groove glued and sealed in the area (12) a tube (1) is formed with a smooth inner wall, which is suitable for conduction of sheet fluids free.

Para establecer el acoplamiento de dos tramos de tubo (1) se ha previsto un manguito (2), que presenta una configuración cilíndrica en cuyos extremos se observa un corte enrampado interior, que forma una superficie perimetral cónica que facilita la circulación del fluido desde el tubo a través del manguito. Exteriormente, en la zona central, dispone de un nervio perimetral (21), que determina la porción de manguito que queda introducida en el interior de cada tubo (1). In order to establish the coupling of two sections of tube (1), a sleeve (2) is provided, which has a cylindrical configuration at the ends of which there is an internally framed cut, which forms a conical perimeter surface that facilitates the circulation of fluid from the tube through the cuff. Externally, in the central area, it has a perimeter nerve (21), which determines the portion of the sleeve that is inserted inside each tube (1).

Este manguito (2) dispone por ambos extremos de sendas juntas de goma (3), que presentan al menos un labio saliente, inclinado hacia el tubo (1), cuyo diámetro exterior es ligeramente mayor que el hueco del tubo (1), de forma que en el acoplamiento dicha junta queda aplastada estableciendo una unión estanca. Como se aprecia en la figura 2, la junta (3) dispone de un frente enrampado en dirección hacia el extremo del manguito (2) y un frente recto (32) en dirección opuesta. Esta configuración permite introducir fácilmente el manguito con la junta (3) en esa posición dentro del tubo (1) sin que se enrolle sobre sí misma, mientras que extraer el manguito una vez acoplado en posición dentro del tubo resulta mucho más dificultoso. This sleeve (2) has rubber seals on both ends (3), which have at least one protruding lip, inclined towards the tube (1), whose outer diameter is slightly larger than the hollow of the tube (1), of so that in the coupling said gasket is crushed establishing a tight connection. As can be seen in Figure 2, the gasket (3) has a front that is wrapped in the direction towards the end of the sleeve (2) and a straight front (32) in the opposite direction. This configuration allows the sleeve with the gasket (3) to be easily inserted into that position inside the tube (1) without winding on itself, while removing the sleeve once coupled in position inside the tube is much more difficult.

La ubicación de las juntas queda definida por un cajeado perimetral (22), de ancho equivalente a cada junta, en el que acopla elásticamente sin que se desplace longitudinalmente al ser introducido el manguito en el interior del tubo (1). The location of the joints is defined by a perimeter recess (22), of equivalent width to each joint, in which it elastically couples without moving longitudinally when the sleeve is inserted inside the tube (1).

Una vez descrita suficientemente la naturaleza de la invención, así como un ejemplo de realización preferente, se hace constar a los efectos oportunos que los materiales, forma, tamaño y disposición de los elementos descritos podrán ser modificados, siempre y cuando ello no suponga una alteración de las características esenciales de la invención que se reivindican a continuación: Once the nature of the invention has been sufficiently described, as well as a preferred embodiment, it is stated for the appropriate purposes that the materials, shape, size and arrangement of the described elements may be modified, provided that this does not imply an alteration. of the essential features of the invention claimed below:

Claims

1.-Coupling for plastic pipes, formed by spirally wound profiles, which have on their sides joining means by tongue and groove, the tube (1) being formed by winding said profile helically and subsequently joining the joints, by gluing and sealing the zone (12), said coupling being characterized in that it is constituted by a rigid or semi-rigid sleeve (2) which externally has an equivalent diameter

5 to the inside of the tube (1) and in the central area and on the outside a protruding ring (21) that determines the sleeve portion that is inserted inside the ends of the corresponding tubes (1); while perimeter and close to both ends it has means for retaining paths of rubber seals (3), which have at least one protruding lip, enrailed towards the center of the sleeve, whose outer diameter is slightly larger than the inner hollow of the tube ( one).

2. Coupling according to claim 1, characterized in that said means for retaining the joints

(3) consist of two perimetral recesses (22), of width equivalent to the joint (3) in which it elastically couples without moving longitudinally when the sleeve is inserted inside the tube (1).