Cleaning device for beverage dispensing systems

A cleaning device for beverage drafting and dispensing systems used with sodas, juices, beer and the like which is adapted to inject a liquid, chemical cleaning agent from a storage container into at least one beverage drafting line and other components of the system and to remove said cleaning agent after a predetermined settling time, comprising a plurality of solenoid valves having rods, a valve exit, a valve entry and a valve side entry, a change valve having a housing and a piston movably arranged within the housing, and operatively controlled, via the solenoid valves, to utilize pressure controlled tap water hydraulically to change position of the piston within the housing between two operating positions;

• the piston being configured to provide, in one of the operating positions constituting a drafting position, a first flow channel reaching from a beverage container adaptor with check valve at the bottom of the housing through a channel alongside the piston to an upper end of the housing where a first pipe thread adapted to provide a connection to at least one beverage drafting line is located;
• the piston being further configured to provide, in one of the operating positions constituting a cleaning position, a second flow channel reaching from a second pipe thread on a first side of the housing for a set water and cleaning mixture carrying line to open into the first flow channel while allowing the piston to block the second flow channel from communication with the adaptor for the beverage container;
• a third pipe thread on an opposite side of the housing operatively associated with a set water line;
• a water pressure control valve;
• the solenoid valves having a pull-back spring for retaining the rods in a rest position to provide a connecting channel between the valve exit and valve side entries and having an activatable magnet which provides an operation position in which a connecting channel is arranged between a valve exit and a valve entry;
• a multiline for operatively connecting the valve entry of two of the halves with the water pressure control valve;
• the valve exit of one of the valve constituting a drafting line being operatively connected with the third pipe thread of the change valve via said set water line;
• the valve exit of another of the valves constituting a rinsing valve being operatively connected with the second pipe thread on a side of the change valve via a set water and cleaning mixture line which leads through a cleaning agent injection device having a Venturi-injector system;
• a by-pass connection operatively arranged between the valve exit of the rinsing valve and the entry to the cleaning agent injection device, leading from the set water line to the valve side entry of another of the valves constituting a cleaning valve, and the valve exit of the cleaning valve is connected via a line with a cleaning agent entry of the cleaning agent injection device, and the valve entry of the cleaning valve is operatively connected to a gravity feed line of the storage container;
• and the valve side entries of the drafting and rinsing valves being operatively connected to a drain.