Abstract: A device for mixing liquids and solids in liquids using vibration includes an electromagnetic drive, a drive shaft arranged coaxially with the electromagnetic drive, with drive shaft having a mixing member and either a permanent magnet or a magnetisable element excited by the electromagnetic drive to cause vibration for transmission to the mixing member, and a system of flat spring elements including a first spring element arranged parallel to the drive shaft and a second spring element arranged perpendicularly to the drive shaft and connected to the permanent magnet or the magnetisable element.

Abstract: A filter element (5) for separating solids from liquids or gases is described, wherein the filter element (5) has a first perforated plate (1) and a second perforated plate (2), wherein the two perforated plates (1, 2) are arranged parallel to one another and are covered by a filter covering (3). In this case, the two perforated plates (1, 2) are displaceable in the longitudinal direction relatively to one another from a non-displaced state into a displaced state, and the plates (1, 2) have spacers (4) on the mutually facing inner sides, which spacers are constructed in such a manner that the spacing (D?) between the plates (1, 2) is larger in the displaced state than in the non-displaced state (D), so that the filter covering (3) is tensioned in the displaced state of the plates (1, 2). In addition, at least one latching element (6) is provided, which fixes the plates (1, 2) to one another in the displaced state.

Abstract: In a device for separating solid particles from liquids and gases in flexible disposable plastic containers, a plurality of filter elements, consisting of flat, elongate support grids with filtrate drain channels and a covering, all-round closed filter medium, are connected to form a filter package and enclosed by a flexible plastic container. This disposable filter system is operated in a pressure vessel and can be compressed there by applying an external pressure in such a way that the residual volume of the suspension is considerably reduced. As a result of the stable design, backwashing of the filter elements is possible, which prevents the build-up of a dense layer of solid particles and can therefore lead to increased filtrate flow.

Abstract: The invention describes a pinching device for controlling flows in elastic tube lines. The pinching device comprises two wheels, wherein the first wheel is designed as an eccentric wheel and is fastened eccentrically on a drive shaft and the second wheel is fixed in a predefined position relative to the eccentric wheel, wherein the position of the second wheel can be adjusted. The eccentric wheel can be rotated via the drive shaft about the eccentric axis of the eccentric wheel in the direction of the second wheel in order to pinch a tube positioned between the two wheels.

Abstract: The invention relates to a device for separating solid materials out of liquids or gases and for discharging solid material. The device comprises a pressurised container and at least one filter element, the at least one filter element being arranged in a flexible container which is arranged in the pressurised container and is sealed tightly relative thereto. The pressurised container comprises at least one outlet for discharging the solid material and the flexible container comprises at least one discharge connection, the discharge connection of the flexible container being guided through the outlet of the pressurised container and sealed tightly relative to the pressurised container. In this case the outlet and the discharge connection of the flexible container can be closed and sealed by means of a closure mechanism relative to the environment outside the flexible container and the pressurised container.

Abstract: A device for mixing liquids and solids in liquids using vibration includes an electromagnetic drive, a drive shaft arranged coaxially with the electromagnetic drive, with drive shaft having a mixing member and either a permanent magnet or a magnetisable element excited by the electromagnetic drive to cause vibration for transmission to the mixing member, and a system of flat spring elements including a first spring element arranged parallel to the drive shaft and a second spring element arranged perpendicularly to the drive shaft and connected to the permanent magnet or the magnetisable element.

Abstract: A vibromixer for mixing liquids, or liquids with gases or solids, consists of a container made of flexible plastic and a drive shaft comprising a mixer plate situated on the lower end of the drive shaft, wherein the container is supported in a support container.

Abstract: A filter device comprising a filter candle on which filter fabrics and membrane tubes are fastened, consists of a central tube, around which a number of perforated support tubes are situated. The seal prevents deposits of filter cake on the radially projecting clamping mechanism which adversely affect the cake discharge, and the seal ensures, by way of its geometrical form and through the selection of the same type material, a permanent sealing action of the connection and fixing of the filter fabric even during operation with temperature and pressure fluctuations, by eliminating the action of difference material coefficients of expansion.

Abstract: A filter device comprising a filter candle on which filter fabrics and membrane tubes are fastened, consists of a central tube, around which a number of perforated support tubes are situated. The seal prevents deposits of filter cake on the radially projecting clamping mechanism which adversely affect the cake discharge, and the seal ensures, by way of its geometrical form and through the selection of the same type material, a permanent sealing action of the connection and fixing of the filter fabric even during operation with temperature and pressure fluctuations, by eliminating the action of difference material coefficients of expansion.

Abstract: A device for separating solid particles from liquids includes a pressure vessel and one or more filter element registers having filter elements disposed in suspension on a horizontal filtrate discharge pipe. Each of the filter elements is formed from a substantially flat support mesh, a completely enclosed filter medium and spacers suspended therebetween. The support mesh is formed of rolled-flat mesh pipes that are smooth on an outside of the mesh pipes and, in an interior thereof, include longitudinal webs arranged to form channels that permit filtrate to flow to the horizontal discharge pipe.

Abstract: The invention relates to method for the stepwise removal of bacteria from a fermentation broth. According to said method, the bacteria in the fermentation broth are mixed with a retention promoter mixture in a first process step and the pretreated bacteria are removed by precoat filtration in a second process step. The inventive method uses a retention promoter mixture from bentonite and polycations such as PEI or polyDADMAC and is suitable for treating large quantities of bacteria. The filter cake obtained with bentonite/PEI has a substantially improved quality.

Abstract: The method of making the clear cell lysate containing plasmid DNA from a biomass obtained in a cell culture process includes filtering the biomass obtained in the cell culture process with a filter medium in the presence of diatomaceous earth acting as a filtering agent to form a filter cake containing the biomass and the filter medium, then thermally digesting the biomass in the filter cake to form a cell lysate containing the plasmid DNA and filtering the cell lysate to form a clear filtrate. The clear filtrate contains the plasmid DNA and has a clarity characterized by an OD600 of at maximum 0.05 U/cm.

Abstract: The method of continuously processing raw brine with a solids content to obtain substantially solids-free pure brine (E) for use in chlor-alkali electrolysis. In this method the raw brine (A) is separated, by means of a decanter (1), into a clear brine (B) with a lower solids content and an underflow (C) with a higher solids content, and the entire clear brine (B) and a metered fraction of the underflow (C) are supplied to a backwash pressure filter (5), from which the substantially solids-free pure brine (E) and a thickened slurry (F) are separately removed. The metered fraction and the clear brine (B) are controlled so that a solids concentration at an inlet to the pressure filter is 5 to 10 times that of a solids concentration in the clear brine (B), which stabilizes operations and increases filtration output.

Abstract: The multiple-tube filter proposed consists of at least one perforated filter element (15) whose outside surface has grooves (2) in a spiral round it, the surface between the grooves (2) preferably curving outwards in a circular arc.

Abstract: A candle filter element adapted to be located inside a pressure vessel and fixed in a hanging position to a collector tube for aseptic and/or sterile filtration of liquids, has a coupling with conical upper coupling part and a conical lower coupling part, with the conical upper coupling part provided with a rinsing opening and a pair of cams.

Abstract: A back-washable, candle filter element has a center tube with a closed peripheral wall surrounded by a plurality of perforated tubes. A head part has bores and a seat and receives a pressure control arrangement located between the bores. The bores establish a direct link between the top openings of the perforated tubes and the central tube for increasing a filtration power in a controlled manner, and for back-washing and drying a filter cake in a controlled manner.