Protective device

Abstract

A protection device for protecting the potable water from contamination caused by backflow, comprises a housing with a potable water inlet, a first funnel, which is arranged at a distance to and aligned below the potable water inlet, and a second funnel, which is arranged at a distance to and aligned below the first conical funnel, and via which the water can be drained. An opening in the housing is formed for the discharge of the backflowing water, to which the back-flowing water can flow between the first and the second funnel.

1 . Protection device for protecting the potable water from contamination caused by backflow, comprising:
 a housing with   a potable water inlet,   a first funnel, which is arranged at a distance to and aligned below the potable water inlet,   a second funnel, which is arranged at a distance to and aligned below the first conical funnel, and via which the water can be drained,   wherein an opening in the housing is formed for the discharge of the backflowing water, to which the back-flowing water can flow between the first and the second funnel.   
     
     
         2 . Protection device according to  claim 1 , characterized in that wherein the first and the second funnel are designed conically and the second conical funnel is part of a siphon. 
     
     
         3 . Protection device according to  claim 2 , characterized in that
 wherein the second conical funnel is surrounded by a siphon socket, which acts as a siphon together with the second conical funnel.   
     
     
         4 . Protection device according to  claim 1 , characterized in that
 wherein the housing is formed of a cover and a lower part and the first conical funnel is received in the cover and the second conical funnel is received in the lower part.   
     
     
         5 . Protection device according to  claim 1 , characterized in that
 wherein a flow regulator is installed in the potable water inlet.   
     
     
         6 . Protection device according to  claim 4 , characterized in that
 wherein sensor elements for detecting an overflow situation and for closing the water inlet are installed in the cover.   
     
     
         7 . Protection device according to  claim 1 , characterized in that
 wherein lugs are installed between the potable water inlet and the first conical funnel.   
     
     
         8 . Protection device according to  claim 1 , characterized in that
 wherein lugs are arranged between the first conical funnel and the second conical funnel.   
     
     
         9 . Protection device according to  claim 1 , characterized in that
 wherein the flow regulator is produced from material suitable for potable water, such as PPSU, and the remainder of the protection device is produced from material not suitable for potable water, such as ABS.   
     
     
         10 . Protection device according to  claim 1 , characterized in that
 wherein it is configured as part of a flushing station.   
     
     
         11 . Protection device according to  claim 1 , characterized in that
 wherein it is installable in a flowing station behind a pre-wall and is completely dismountable through an inspection opening.   
     
     
         12 . Protection device according to  claim 5 , wherein sensor elements for detecting an overflow situation and for closing the water inlet are installed in the cover.