Tetra Pak Holdings & Finance S.a.

Roby Teknik Aktiebolag

Goran Hanerus

Tommy Ljungstrom

Tommy Bo Ljungstrom

A method of venting a plant for filling containers (2) with an apportioned quantity of liquid without air inclusions by means of a dispensing pump (9) in which two control valves (11', 12') disposed at the outlet from a filler pipe (4) are intermittently opened and closed, the liquid (17) being supplied via a buffer container (13). To avoid faulty filling at the start of the filling operation during the forward run of product, and in order to be able as far as possible to determine an exact switch-on time for the actual filling process, it is according to the invention envisaged that for venting the filler pipe (4) and the dispensing pump (9) connected thereto, two serially connected control valves (11',12') are so controlled separately from each other that upon creation of the vacuum in the buffer container (13) both control valves (11', 12') are opened; after the major part of the air has bubbled out upwardly, firstly the upper control valve (12') and after an adjustable period the lower control valve (22') are closed after which the upper control valve (12') is opened and closed again after a further interval of time.

Method of and an apparatus for venting a filling plant

To provide a suitable filling atmosphere around a produce filling pipe on a packing machine and to make possible a rational, accurate cleaning of the filling pipe of the machine without having to dismantle and disassemble the filling pipe at a normal stoppage of the machine, the filling pipe is surrounded by a permanent tubular casing whose lower end is adapted so that it can be closed for cleaning with the aid of a detachable lid to form a container enclosing the filling pipe. The filling pipe, via a connecting means at the upper end of the casing, can be joined to an outer flow system to allow circulation of a cleansing agent.

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Malmo, Sweden

Goran Hanerus