Proportional emulsion valve for fluid treatment machines, in particular for the production and delivery of beverages

Abstract

The present invention relates to a proportional emulsion valve (), configured to be used inside a fluid treatment machine, comprising a main body () in which an inlet duct () is defined, operatively connectable to the hydraulic circuit of a fluid treatment machine and configured to allow the entrance into said valve () of a fluid at a pressure higher than atmospheric pressure, and an outlet duct () operatively connectable to the hydraulic circuit of the machine and configured for the expulsion of the fluid from the valve (), the inlet duct () and said outlet duct () being in fluid communication one another, the valve () comprising a slider () selectively positionable in an opening position, in which it allows the fluid communication between the inlet duct () and the outlet duct (), and being selectively positionable, against the pressure exerted by a fluid when it is contained in the inlet duct (), in a closing position in which the fluid communication between the inlet duct () and the outlet duct () is interrupted due to direct or indirect action of the slider (), the slider () being operatively connected to an actuating system () comprising a driving element () configured to selectively exercise on the slider () a desired closing force () which tends to bring it towards the closing position; the driving element () is configured to exert the closing force () on the slider () through an elastic element () interposed between the driving element () and the slider () and configured to elastically force the slider () towards the closing position.