Valve device for a compressed air supply system and...

B - Operations – Transporting – 60 – T

Patent

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Details

B60T 17/02 (2006.01)

Patent

CA 2677466

The invention relates to a valve device for a compressed air supply system (10), comprising a control chamber (68) to which compressed air may be supplied, a control piston plate (66) delimiting the control chamber, a control piston (64) that is fixed to the side of the control piston plate that faces away from the control chamber, which protrudes into a discharge valve chamber (60) of a discharge valve, provided with at least one compressed air connection, and a valve head (78) delimiting the discharge valve chamber which can be pressurised with the force of a spring (80) in the direction of a valve seat and which can be lifted from the valve seat by the control piston counter to the force of the valve seat in order to open the discharge valve. Said control piston and a valve housing surrounding the control piston defines at least two regeneration valve chambers (76, 98) of a regeneration valve having at least one compressed air connection and the at least two regeneration valve chambers that are either separated from each other or connected together, in accordance with the position of the control piston. The invention also relates to a compressed air supply system.

Ensemble soupape pour un système de fourniture d'air comprimé (10), qui comporte une chambre de commande (68) pouvant être soumise à l'action d'air comprimé, une plaque de piston pilote (66) délimitant la chambre de commande, un piston pilote (64) fixé à la plaque sur la face de cette dernière opposée à la chambre de commande, qui fait saillie dans une chambre (60) d'une soupape de décharge, pourvue d'au moins un raccordement pour l'air comprimé, et une tête de soupape (78) délimitant la chambre de soupape de décharge, qui est contrainte par la force d'un ressort (80) dans la direction d'un siège de soupape et qui peut être soulevée du siège de soupape par le piston pilote à l'encontre de la force du ressort pour ouvrir ladite soupape de décharge. Le piston pilote et un boîtier de soupape entourant le piston pilote délimitent au moins deux chambres (76, 98) d'une soupape de régénération pourvues chacune d'au moins un raccordement pour l'air comprimé. Les deux chambres de soupape de régénération se trouvent soit séparées l'une de l'autre, soit en communication l'une avec l'autre, en fonction de la position du piston pilote. La présente invention concerne en outre un système de fourniture d'air comprimé.

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