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 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: A filter for sterile filtration of suspensions, comprising a pressure vessel, at least one candle filter element arranged in the pressure vessel, the at least one filter element having a hollow member with a lower portion which is formed as a filtering medium and an upper portion which is formed as a closed tube with an unwrapped self-supporting filtering medium, and a tube for carrying off a filtrate, the tube being formed as a central tube which is arranged in the hollow member and the filtering medium and is removable so as to permit inspection and cleaning of the filter element without opening the pressure vessel.

Abstract: A candle type precoated filter for residual volume filtration has a pressure vessel having a cylindrical upper part and a conical base, a plurality of filter elements arranged substantially vertically and including at least one residual filter element and other filter elements formed so that the at least one residual filter element is lengthened toward the base and is longer than the other filter elements and a separating wall which separates the residual filter element in an upper portion of the pressure vessel from the other filter elements so as to be tight against media and to project out in a lower portion of the pressure vessel beyond a length of the other filter element.

Abstract: Multichamber-candle filter element for filtration of a residual volume of a suspension with rapidly settling solid components, includes at least two chambers (1,2) positioned in succession above each other, a lowest of the chambers being from 1/3 to 1/10 of a total length of the candle filter element, and a separate filtrate delivery pipe (8,9) extending into each of the chambers to provide a separate filtrate outlet for each chamber and a partition member separating each of the chambers from each other in a fluid-tight manner. The multi-candle filter element also has a fluid-tight cover plate (6) and a fluid-tight bottom plate (3) and fluid permeable walls (14,15).

Abstract: In a method of the separation of yeasts from a fermentation liquor contained in a fermentation tank the fermentation liquor is forced by a pump through a conduit system into a filter container in which the fermentation liquor is forced through a number of vertically suspended candle-like filters so that yeast filter cakes are formed on the filter cloth with water of the filters. The cakes are then washed with water, blown off with pressurized air for dewatering, loosened with a counterflow of a pressurized gas and discharged from the filter container. The filter container is immediately connected to the fermentation tank.

Abstract: The filter element for use in a container includes a central pipe (2) closed along its length and also provided with an opening at a lower end thereof; a cylinder surrounding this central pipe in a concentric manner and having a closable lower end, the closable lower end of the cylinder projecting beyond the lower end of the central pipe and being provided with a base; and at least two cylindrical filter means (1), which are arranged radially and symmetrically with respect to the cylinder and which communicate with the cylinder, and a group of connecting pipes, each of the cylindrical filter means being connected by one of the pipes with the cylinder.

Abstract: A clarifying filter-centrifuge comprises a rotatable driving shaft, a closed drum driven by the shaft, a cover which closes the drum at an end face thereof, and a filter diaphragm mounted in the cover and extending normal to an axis of rotation of the shaft. The drum includes an outer sleeve and an inner sleeve coaxial with the outer sleeve and having a thrust body. The driving shaft includes a hollow shaft and an inner shaft axially displaceable in the hollow shaft. The drum is connected to the hollow shaft. Suspension is fed axially into the inner sleeve and flows through distributing channels into the interior of the outer sleeve and then through the filter diaphragm. The cover is displaceable for discharging separated solids from the centrifuge.

Abstract: A clarifying filter-centrifuge comprises a rotatable driving shaft, a closed drum driven by the shaft, a cover which closes the drum at an end face thereof, and a filter diaphragm mounted in the cover and extending normal to an axis of rotation of the shaft. The drum includes an outer sleeve and an inner sleeve coaxial with the outer sleeve and having a thrust body. The driving shaft includes a hollow shaft and an inner shaft axially displaceable in the hollow shaft. The drum is connected to the hollow shaft. Suspension is fed axially into the inner sleeve and flows through distributing channels into the interior of the outer sleeve and then through the filter diaphragm. The cover is displaceable for discharging separated solids from the centrifuge.

Abstract: A filter candle element which is mounted in depending manner in a pressure container has a support body and a filter tissue which covers the support body and has at least one impermeable portion so as to prevent the depositing of a continuous filter cake. Through provision of a plurality of impermeable portions, the filter cake is divided into several pieces which do not obstruct their removal. The impermeable portions are obtained by spraying of synthetic material onto the filter tissue. These filter candle elements are especially suitable for alluvial filters of large dimensions.

Abstract: Separation of solid matter in a clarifying filtering centrifuge is performed by axially supplying a suspension, accelerating the axially supplied suspension by deflecting the latter via a distributing cone, radially deflecting the accelerated suspension over a rear wall of a separating chamber to a closed peripheral wall of the same, and thereafter axially deflecting the suspension in direction toward filter elements arranged normal to an axis of rotation of the centrifuge.

Abstract: A filter is provided with a number of elongated filter elements disposed in a pressure vessel. Each element has a filter web extending about the length of the element and fastened at the top and the bottom. Rigid support means are provided inside the filter element in order to support the web. They extend about the length of the element and preferably extend over a part only of the circumference of the element so as to permit the web to perform a limited movement outwards and inwards in radial direction. During the operation the web is pressed against the support means by the inflowing liquid permitting a filter cake to build up at its outside while upon a backwash operation the web moves outwardly away from said support means thus loosening the filter cake. Inlet and outlet means are provided on the pressure vessel. This permits a build-up and easy removal of the filter cake without the use of a bellows type filter web.

Abstract: In a filter pressure container provided with a plurality of vertically suspended tube-like filter elements having a filter cloth thereon the filtration of residual volumes of a liquid being filtered and the rinsing-out of the filter cakes built up during the filtration on the filter cloth are carried out by pumping out of the residual liquid or the rinsing liquid from the container by pump into an injector mounted in the container above the filter elements. The injector sprays out the residual liquid or the washing liquid over the filter elements while a pressure gas or air is simultaneously supplied into the container to force the liquid mist through the filter elements.