Discharger for a flowable medium

Abstract

1. Discharger. 2.1. The invention relates to a discharger for a flowable medium, comprising a discharge sleeve ( 20 ), at whose one end there is provided a discharge opening ( 22 ) for discharging the medium, and a closing pin ( 30 ), which is provided in the discharge sleeve ( 20 ) and is longitudinally displaceable relative to the discharge sleeve ( 20 ) and by which the discharge opening ( 22 ) can be closed off. 2.2 According to the invention, the closing pin ( 30 ) has an outward-pointing cylindrical sub-portion ( 30 a ) and the discharge sleeve ( 20 ) has an inward-pointing cylindrical sub-portion ( 20 a ), the cylindrical sub-portions ( 20 a , 30 a ) forming a transition fit or a tight clearance fit and a pressure-reducing and/or medium-flow-reducing working geometry ( 34 ) being provided in the cylindrical sub-portion ( 20 a , 30 a ) of the closing pin ( 30 ) and/or of the discharge sleeve ( 20 ). 2.3 Use for mediums which are intended to be discharged with low pressure and without a pronounced spray jet.

1 . Discharger for a flowable medium, comprising 
 a discharge sleeve ( 20 ), at whose one end there is provided a discharge opening ( 22 ) for discharging the medium, and    a closing pin ( 30 ), which is provided in the discharge sleeve ( 20 ) and is longitudinally displaceable relative to the discharge sleeve ( 20 ) and by which the discharge opening ( 22 ) can be closed off, characterized in that the closing pin ( 30 ) has an outward-pointing cylindrical sub-portion ( 30   a ) and the discharge sleeve ( 20 ) has an inward-pointing cylindrical sub-portion ( 20   a ), the cylindrical sub-portions ( 20   a ,  30   a ) forming a transition fit or a tight clearance fit and a pressure-reducing and/or medium-flow-reducing working geometry ( 34 ) being provided in the cylindrical sub-portion ( 20   a ,  30   a ) of the closing pin ( 30 ) and/or of the discharge sleeve ( 20 ).    
   
   
       2 . Discharger according to  claim 1 , characterized in that the closing pin ( 30 ) is longitudinally displaceable, in dependence on a fluid pressure of the medium, in a pumping chamber of a pumping device of the discharger and closes off the discharge opening ( 22 ) if the fluid pressure of the medium is below a defined limit pressure.  
   
   
       3 . Discharger according to  claim 1 , characterized in that the cylindrical sub-portion ( 20   a ,  30   a ) of the closing pin ( 30 ) and/or of the discharge sleeve ( 20 ) contains at least one medium duct ( 34 ).  
   
   
       4 . Discharger according to  claim 3 , characterized in that the medium duct ( 34 ) extends helically.  
   
   
       5 . Discharger according to  claim 1 , characterized in that the closing pin ( 30 ) is operatively connected to a pressure plate ( 40 ) which can be actuated by the internal pressure, the closing pin ( 30 ) preferably being configured in one piece with the pressure plate ( 40 ).  
   
   
       6 . Discharger according to  claim 5 , characterized in that the pressure plate ( 40 ) a pressure plate surface area which is at least five times, preferably ten times larger, than the surface area of the discharge opening ( 22 ).  
   
   
       7 . Discharger according to  claim 5 , characterized in that the pressure plate ( 40 ) consists at least partially of an elastic material, preferably having an E-modulus below 1 kN/mm 2 , in particular having an E-modulus below 0.5 kN/mm 2 .