An eversible stopper/strainer device

Details An eversible stopper/strainer device An eversible stopper/strainer device

E - Fixed Constructions

03

C

E03C 1/26 (2006.01) E03C 1/262 (2006.01)

Patent

CA 2281585

A stopper-strainer device (1) having a diaphragm (2) and a closure plate (4). The diaphragm (2) is provided with apertures (6) for passage of fluid. The diaphragm (2) is movable between first and second conditions in which the stopper-strainer device (1) functions as a stopper and a strainer, respectively. In the first condition, the closure plate (4) seals with the diaphragm (2) so that the stopper-strainer device (1) functions as a stopper to prevent fluid flow. In the second condition, the closure plate (4) is spaced from the diaphragm (2) and fluid is able to pass through the apertures (6) so that the stopper-strainer device (1) functions as a strainer to allow fluid flow while restraining material entrained in the fluid that is unable to pass through the apertures (6).

Dispositif (1) d'arrêt et de filtrage présentant un diaphragme (2) et une plaque (4) de fermeture. Le diaphragme 82) est pourvu d'orifices (6) pour le passage du fluide. Le diaphragme (2) peut être déplacé entre des première et seconde positions dans lesquelles le dispositif (1) d'arrêt et de filtrage effectue des opérations d'arrêt et de filtrage, respectivement. Dans la première position, la plaque (4) de fermeture se referme sur le diaphragme (2) de telle sorte que le dispositif (1) d'arrêt et de filtrage fait office de tampon et empêche l'écoulement du fluide. Dans la seconde position, la plaque (4) de fermeture est écartée du diaphragme (2) et le fluide peut traverser les orifices (6) de telle sorte que le dispositif (1) d'arrêt et de filtrage fait office de filtre, ce qui permet l'écoulement du fluide tout en empêchant la matière entraînée contenue dans le fluide de traverser les orifices (6).

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