Changeover valve

Details Changeover valve Changeover valve

A - Human Necessities

47

L

A47L 5/32 (2006.01) F16K 5/18 (2006.01) F16K 11/076 (2006.01) F16K 31/58 (2006.01)

Patent

CA 2351552

A changeover valve (100) comprises a first valve member (20) and a second valve member (50). The first valve member (20) has an aperture (28). The second valve member (50) has first and second apertures (54, 58). The first valve member (20) is movable relative to the second valve member (50) for selective alignment of the first valve member aperture (28) with one or other of the apertures (54, 58) of the second valve member (50). The valve (100) also has a ramp and follower means (29, 62) for automatically moving the valve members (20, 50) away from the one another during changeover movement of the first valve member (20) relative to the second valve member (50) so that wear on the surfaces of the valve members (20, 50) is minimised.

La présente invention concerne une valve d'inversion (100) comprenant des premier (20) et second éléments (50) de valve. Le premier élément de valve (20) présente un orifice (28). Le second élément de valve (50) présente des premier et second orifices (54,58). Le premier élément de valve (20) est déplaçable par rapport au second élément de valve (50) en vue d'un alignement sélectif de l'orifice (28) avec l'un ou l'autre des orifices (54,58). La valve (100) comporte aussi une oreille et des moyens suiveurs (29,62) destinés à éloigner automatiquement les éléments de valve (20,50) l'un de l'autre durant un mouvement d'inversion du premier élément de valve (20) par rapport au second élément de valve (50) de manière à minimiser l'usure sur les surfaces de ces éléments (20,50).

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