US2017321685A1PendingUtilityA1

Device for pumping a liquid in a liquid line

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Assignee: KHS CORPOPLAST GMBHPriority: Oct 30, 2014Filed: Oct 30, 2015Published: Nov 9, 2017
Est. expiryOct 30, 2034(~8.3 yrs left)· nominal 20-yr term from priority
Inventors:Rolf BaumgarteLudwig ClüsserathWerner LesinskiMichael LinkeMichael LitzenbergNiels Meyer
F04B 43/107B65B 39/004B65B 39/001B65B 3/32F04B 43/067B65B 3/12
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Claims

Abstract

The invention relates to a device for pumping a liquid in a liquid line, in particular in a bottling system. The object of the invention is a device for pumping a liquid in a liquid line, the liquid-guiding areas of which device can be cleaned and/or disinfected without disassembling the piston assembly or performing any other interventions from the exterior. According to the invention, a device for pumping a liquid in a liquid line ( 1 ) comprises a pump element ( 2 ) and two valves ( 3, 4 ) which are disposed in the liquid line upstream of and downstream from the pump element, said pump element ( 2 ) comprising a pump piston ( 6 ) operating in a cylinder ( 5 ). The inventive device is characterized in that said pump element ( 2 ) comprises a closed chamber ( 7 ) having a constant volume of a secondary liquid on which the pump piston ( 6 ) acts. Also, the chamber ( 7 ) is connected to the liquid line ( 1 ) by means of an elastic liquid-impermeable element ( 8 ), which element can be deformed under the pressure exerted by the volume of the secondary liquid displaced by the pump piston ( 6 ).

Claims

exact text as granted — not AI-modified
1 . A device for pumping a liquid in a liquid line comprising:
 a pump element comprising a pump piston operating in a cylinder; and   two valves which are disposed in the liquid line upstream of and downstream from the pump element respectively;   wherein said pump element comprises a closed chamber having a constant volume of a secondary liquid on which the pump piston acts; and   wherein the chamber is connected to the liquid line by an elastic liquid-impermeable element, which element is deformable under pressure exerted by the volume of the secondary liquid displaced by the pump piston.   
     
     
         2 . The device according to  claim 1 , wherein the elastic element is a membrane or a roll membrane. 
     
     
         3 . The device according to  claim 1 , wherein the elastic element is a bellows or a roll bellows. 
     
     
         4 . The device according to  claim 1 , wherein the secondary liquid is water or oil. 
     
     
         5 . The device according to  claim 1 , wherein one or both of the valves are check valves.

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