Liquid dispensing apparatus

US4593730A · kind A · utility

Assignee

• Tetra Pak Development · CH

Inventors

• Wilhelm Reil · Bensheim, DE
• Ulrich Deutschbein · Mühltal, DE

Key dates

• Filing date: Jul 13, 1984
• Grant date: Jun 10, 1986
• Expiry date: Jul 13, 2004

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65B39/00
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

Described is a filling apparatus for filling packaging means with quantitatively controllable amounts of a flow substance, having a pump piston (54) which is movable in a cylinder (50), wherein the feed end and the discharge end of the pump chamber (9) are respectively closed by valves (4, 5) and, to avoid foaming, the discharge end at least partially dips into the upwardly open packaging means (10). Also provided is a drive means (31, 37) with cam member (28). So that, as far as possible, only one essential machine component has to be moved, quantitatively controlled filling is possible, with a small height of drop, and preferably also the volume of filling can be varied without major conversion operation, it is provided in accordance with the invention that the annular pump piston (54) and the piston rod (6) are of a hollow configuration, the discharge end has a discharge nozzle (54') mounted on the end of the piston rod (6) that is remote from the piston (54), and the emptying valve (5), the feed valve (4) is arranged on the cylinder (50), and that the drive means (31, 37) has at least two rotationally mounted levers (31, 37) which are in adjustable driving engagement with each …