Feldmuhle Aktiengesellschaft

Feldmuehle Aktiengesellschaft

Aaflowsystems Gmbh & Co. Kg

Westfalia Separator Ag

Cerasiv Gmbh Innovatives Keramik-engineering

Membraflow Gmbh & Co. Kg Filtersysteme

Membraflow Gmbh & Co. Kg

Aaflosystems Gmbh & Co. Kg

Gea Mechanical Equipment Gmbh

Hans Olapinski

Ulf Dworak

Dieter Fingerle

Ulrich Krohn

Hans-Peter Feuerpeil

Dieter Bl&auml;se

Dieter Bläse

Wolfgang Burger

Bengt N Palm

Martti J Hakulinen

Kilian Friederich

Jochen Hamatschek

Winfried Michell

Hans Jud

Manfred Kielwein

Helmut Ziegelbauer

Hans-Erich Simmich

Maria Alexandra Guerra

Eduardo Bellido

Hans Feuerpeil

The invention relates to a filter module having a module housing and at least one filter element. The filter module has at least one inlet opening, at least one filtrate outlet and a module housing having at least one joint line.

Filter module

A device for filtering liquids comprising two shafts which are parallel to each other or at an acute angle wherein each shaft carries a stack of disks that extend perpendicularly to the shaft axis and are rotated thereby. The disks of one stack are engaged in the intermediate spaces of an adjacent disk stack and at least one of the shafts is driven. At least one of the shafts is hollow and is provided with bores and some of the disks have channels therein which are fluidly connected to the inside of their respect hollow shaft. A support ring is oversized in relation to the shaft so that a channel is formed between the inner surface of the support ring and the outer surface of the shaft and this channel extends over at least part of the length of the shaft.

Rotating filter

The invention relates to a membrane module in order to filter media which are capable of flowing. Said module incorporates an integrated heat exchanger. According to the invention, the membrane module has the following characteristics: a plurality of rod-shaped, porous, ceramic filter elements ( ) (ceramic rods); the ceramic rods ( ) are provided with continuous bores ( ) located parallel to an axis; the ceramic rods are arranged parallel to each other and a lid ( ) covers the end thereof: the ceramic rods ( ) are sealed at their circumferences against the lid ( ); a lid ( ) located at one of the membrane modules is provided with an inlet ( ) for the medium to be treated and a lid ( ) located at the other end is provided with an outlet ( ) in order to allow the media to flow out; each ceramic rod ( ) is surrounded by a sheath tube ( ): an annular gap ( ) is situated between the sheath tubes of each ceramic rod and the inner surface of the corresponding sheath tubes: the annular gaps are conductingly connected to each; the lid ( ), ceramic rods and casing pipes ( ) are surrounded by a housing ( ) which is securely connected to the lid; the housing ( ) comprises an inlet ( ) for the introduction of permeate into the annular ( ) gap and an outlet for draining off permeate from the annular gap. The housing also comprises an inlet ( ) and an outlet ( ) for directing a thermally conducting material through the intermediate chamber pertaining to each individual sheath tubing ( ) and the housing ( ); each ceramic rod ( ) is surrounded by an interrupted tube ( ) which is located in the annular gap ( ) and extends over a substantial proportion of the length of said gap.

Filter membrane module comprising an integrated heat exchanger

Process and apparatus for the purification and/or treatment of suspensions

The invention encompasses a system for the cross flow filtration of fluid media using membranes. The system has in a first embodiment two shafts, only one of which is hollow, with each shaft running through an axis of its given disc. The disc of each shaft is positioned offset with respect to one another to have a region of overlap therebetween. The region of overlap serves to enhance the efficient operation of the system by reducing the degree of settling of retentate on the disc of the hollow shaft, because of the wiping or cleaning effect achieved upon rotation of each shaft by a drive system. In another embodiment, both shafts are hollow.

System for cross-flow permeation by means of a membrane

There is provided an apparatus for the filtration of fluid media, in particular for the pre-screening of media, that has a primary pack of hollow discs, which are arranged parallel to each other at regular distances to each other, the walls of which are made of a sieve material. The apparatus also has a primary, hollow shaft, which penetrates and is fixed to the hollow discs, connecting its interior to the cavities of the discs, and is fitted with a drive. Also included is a secondary pack of discs, which are arranged similarly to the hollow discs of the primary pack. There is a secondary shaft that is arranged similarly to the primary shaft. The two packs with their respective shafts are designed and arranged in such a way that the discs of one pack protrude into the spaces between neighboring discs of the other pack. There is a container that encloses the packs and the shafts. The container has an inlet for the medium to be treated, as well as an outlet for the retentate. Each of the hollow shafts has an outlet for the filtrate.

Interengaged rotary disc filters

Ceramic filter element for tangential flow filtration of liquids and

Combinations of frictional and sealing elements made from hard substances, such as sintered aluminum oxide, are ground and lapped at their surfaces of engagement. At least one surface has at least some micro-blurred areas. The micro-blurring is produced by chemical etching. Phosphoric acid can be used as the chemical etching, and in thermal etching, the etching temperature is between 1400.degree. and 1560.degree. C.

Method of etching ceramic frictional or sealing elements

The present invention is in a sintered molding of partially stabilized zirconium oxide having a microstructure of 40 to 70 volume percent cubic phase, 30 to 70 volume percent tetragonal phase, and up to 10 volume percent monoclinic phase wherein the tetragonal phase is present in the form of precipitates less than 200 nm. A mixture of magnesia and yttria is used to stabilize the zirconia. Optionally, the sintered molding may further contain up to 20 wt. % spinel.

Sintered molding, a method for producing it and its use

Disclosed is a starting mixture for the preparation of a sintered body on a basis of aluminum titanate consists of more than 46 wt.-% TiO.sub.2, up to 49.5 wt.-% Al.sub.2 O.sub.3, 3 to 5 wt.-% quartz, and less than 0.2 wt.-% impurities, Al.sub.2 O.sub.3 and TiO.sub.2 being present in the weight ratio of 1:0.95 to 1:1.05. The sintered body according to the invention is composed of:

Sintered form body

A tubularly formed valve guide (1) with a bore for a metal valve shank (2) for use in an internal combustion engine comprising a sintered body of a partially stabilized zirconium oxide having a porosity of less than 3%. Even under extreme stress, e.g., in an outlet valve of a high-power engine, but in particular in the blow-off valve of an exhaust gas turbocharger, the valve guide shows a considerably reduced wear as compared to conventional valve guides.

Valve guide for an internal combustion engine

Ceramic shaped articles are disclosed which are formed of dense, non-metallic, mechanically resistant materials and contain eutectic constituents consisting of zirconium oxide, hafnium oxide and at least one other high-melting oxide and mixtures thereof. The composition exhibits excellent hardness, wear properties and bending strength. A method for preparing the articles is also disclosed wherein the appropriate mixture in a hypoeutectic, eutectic, or hypereutectic ratio is heated to its melting point, poured into a preheated mold and cooled.

Sintered ceramic shaped article wholly or predominantly of eutectic

A piston arrangement with a metal shaft, a piston head that is attached to it with a shrink ring, and a member made of partially stabilized zirconium ozide. The top which demarcates the combustion chamber, of the piston head, consists entirely of the member made of partially stabilized zirconium oxide. The bottom of the zirconium-oxide member is a truncated cone and the top of the shaft is a truncated cone. They are surrounded by an annular component that is split into two sections parallel to the longitudinal axis of the piston. The annular ocmponent is secured with an outside shrink ring.

Piston with a member made of partially stabilized zirconium oxide

A thermal insulation lining (1) in the exhaust duct (4) of a cylinder head (5) consists of a sintered compact (2) of ceramic material having an envelope containing or consisting of inorganic fibers.

Thermal insulation lining of ceramic material for a hot gas duct

In a cylinder head (1) of a piston engine, a thermal insulation component having openings for the accommodation of valve seats, spark plugs, and injection nozzles consists of a circular aluminum titanate plate (2) which is shrink-fitted into a planar circular ring of zirconium oxide (12) gripped or shrink-fitted in the cylinder head. The circular plate (2) of aluminum titanate forms the greatest part of the cylinder head bottom (9).

Growing community of inventors

Aichwald, Germany

Hans Olapinski