Vibrating armature pump

Abstract

The invention relates to a vibrating armature pump having a pump housing, which comprises a cylinder for receiving a substantially linearly displaceable pump piston unit ( 10 ). The pump piston unit ( 10 ) comprises at least one pump element ( 11 ) for pumping the pumping fluid and a drive element ( 12 ) for driving the pump element ( 11 ). Both elements are designed separately and arranged loosely one behind the other.

1 . A vibrating armature pump with a pump casing ( 2 ), which comprises a cylinder ( 13 ) for receiving a pump piston unit ( 10 ) adjustable essentially linearly, characterized in that the pump piston unit ( 10 ) has at least one separate pump element ( 11 ) for pumping the pump fluid and one separate drive element ( 12 ) for driving the pump element ( 11 ). 
     
     
         2 . The vibrating armature pump as claimed in  claim 1 , characterized in that the pump element ( 11 ) has a first stop ( 5 ) for the drive element ( 12 ) and the drive element ( 12 ) has a second stop ( 5 ) for the pump element ( 11 ). 
     
     
         3 . The vibrating armature pump as claimed in one of the abovementioned claims, characterized in that at least one first spring element ( 28 ) is provided for acting with force upon the pump piston unit ( 10 ) and/or the pump element ( 11 ). 
     
     
         4 . The vibrating armature pump as claimed in one of the abovementioned claims, characterized in that at least one second spring element ( 31 ) is provided for acting with force upon the pump piston unit ( 10 ) and/or the drive element ( 12 ), the spring force of the second spring element ( 31 ) being directed opposite to the spring force of the first spring element ( 28 ). 
     
     
         5 . The vibrating armature pump as claimed in one of the abovementioned claims, characterized in that at least the drive element ( 12 ) is composed essentially of a ferromagnetic material. 
     
     
         6 . The vibrating armature pump as claimed in one of the abovementioned claims, characterized in that at least the drive element ( 12 ) is composed essentially of high-grade steel. 
     
     
         7 . The vibrating armature pump as claimed in one of the abovementioned claims, characterized in that at least the pump element ( 11 ) is composed essentially of a plastic. 
     
     
         8 . The vibrating armature pump as claimed in one of the abovementioned claims, characterized in that at least one coil ( 4 ) is provided for adjusting the drive element ( 12 ). 
     
     
         9 . The vibrating armature pump as claimed in one of the abovementioned claims, characterized in that a pulsating or intermittent voltage is provided.