Tuchenhagen Gmbh

Otto Tuchenhagen Gmbh & Co. Kg

Herbert Robert Coura

Hans O Mieth

Otto A Tuchenhagen

Martin Sauer

Bernd Porath

Werner Schmid

Jurgen Schreiber

Martin Gesikiewicz

Wolfgang Rauen

Gundar Helge Scholz

A method for the control of the switching operation of a valve by the fact that the two end positions and the intermediate position(s) of the valve are clearly determined each by the valve rod(s) bearing directly or indirectly on fixed position limiters, the fixed position limiters each are moved to in the course of the first switching operations of the valve, and the respective fixed position messages resulting therefrom are stored.

Method and device for controlling the switching movement of a valve

The invention relates to a bellows to seal a valve rod passage in a lifting valve, specifically formed as an expansion bellows or corrugated tube, which ensures a reliable, hygienically proper and durable static sealing of the connecting flange of a closing-member unit in the box of the lifting valve under the occurring forces at an adequately long service life. This is achieved by the fact that the connecting flange (,) of the closing-member unit (,), in the region where it is connected to the bellows (,), has a fastening component (,) indirectly supported on the box side to absorb, in a way free from bending moments to a very large extent, the forces resulting from the valve-lift induced deformation of the bellows (,) and/or the respective pressure in the box (,) and is reduced, in the area of its conical sealing surface (,), to a minimal wall thickness meeting the strength-related requirements, in the form of a diaphragm-shaped sealing element (,), and that the diaphragm-shaped sealing element (,), on its side facing away from the conical scaling surface (,) has at least one biased elastic thrust ring (,) which presses the sealing surface (,) onto the complementary annular seating surface (,).

Bellows for sealing a valve rod passage in a globe valve

Device for the drive system for double seat valves

Cleanable scraper station

Apparatus for cleaning a liquid connection and securing a stroke and spring abutment for double seat pipeline switches with leakage control, comprising a pipeline switch housing, a pipeline switch drive mounted within the switch housing, two valve disks of different sizes, two concentrically mounted valve rods of different lengths, one of the valve rods being hollow, the one of longer length fitting within the other of shorter length, the inside valve rod being connected to the pipeline switch drive and the smaller of the two valve disks, the inside valve rod upon being lifted by the drive carrying along the valve disk of larger size, the valve disks in both the closed position and the open position enclosing between themselves a leakage cavity, one end of the hollow valve rod defining a pressing and guide part with a spring abutment and a connecting opening adapted to receive a cleaning fluid, a rod head forming a portion of the longer valve rod and defining a connecting opening, an upper spring abutment and an upper stop surface for the pressure and guide part, and a spring between the rod head and the pressing and guide part to bias them apart, the valve rod of longer length defining an axial bore with transverse holes communicating with the leakage cavity and the connecting opening in the valve head, the pressing and guide part communicating around the valve rod of longer length and through the leakage cavity with the axial bore and connecting opening of the valve head to provide a fluid passageway for the cleaning fluid through the apparatus.

Pipeline switch with leakage control and cleanable leakage cavity

Apparatus for cleaning a liquid connection, securing a stroke and spring abutment for double-seat pipeline switches with leakage control, comprising two valve disks of different sizes which are movable relative to each other and independently of each other, the smaller valve disk facing away from a drive rigidly connected via a valve rod with a pipeline switch drive and, upon its lift motion after a given partial stroke, positively carrying along with it the other, larger valve disk, the valve rods of the valve disks pointing in the same direction and engaging telescopically into each other with the end of the hollow valve rod which concentrically surrounds the other valve rod receiving, outside the pipeline switch housing, in a form fitting manner, a pressing and guide part, equipped with a lower stop surface and spring abutment, the valve disks both in the closed position and in the open position enclosing between themselves a leakage cavity which is connected via openings with a discharge bore leading into the atmosphere and arranged within the other valve rod a housing part, which receives an upper spring abutment, an upper stop surface, and a connecting opening for cleaning liquid forming in cooperation with the pressing and guide part, a spring chamber within which a spring is arranged, tightly closed off from the atmosphere.

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Buchen, Germany

Herbert Robert Coura