Abstract: A seal assembly for providing a seal between a first zone and a second zone includes a rotatable sealing member including a first sealing ring, a stationary sealing member including a second sealing ring and a device for bringing the first and second sealing rings into engagement with each other. The first and second sealing rings are arranged so that a double contact seal having at least one chamber arranged at a radial plane is formed upon engagement between the first and second sealing rings. The seal assembly further includes at least one fluid connection to the chamber. A centrifugal separator includes such a seal assembly.

Abstract: A centrifugal separator and a method of controlling a centrifugal separator are disclosed. The centrifugal separator includes a separator rotor delimiting a separation space. At least one tube extends from at least one radially outer portion of the separation space towards a central portion of the separator rotor. The method includes inter alia changing a rotational speed of the separator rotor from a first rotational speed to a second rotational speed, such that a heavy phase accumulation at a periphery of the separation space is displaced in a circumferential direction.

Abstract: A centrifugal separator bowl includes a rotor casing enclosing a separation space in which a stack of frustoconical separation discs is arranged to rotate around a vertical axis of rotation, wherein the separation discs are arranged with the imaginary apex pointing to the axially lower end of the rotor casing; a feed inlet at the axially lower end for receiving the fluid mixture to be separated; a distributor for distributing the fluid mixture from the inlet to the separation space, the distributor being arranged for guiding the fluid mixture to be separated continuously from an axially lower position at the inlet to an axially upper position in the separation space.

Abstract: A method of producing a low-fat product from a starting material made of a fat and/or oil containing plant- or animal item includes providing the starting material at a temperature of at least 35° C. and extracting a greater part of the extractable oil and/or fat originally contained in the plant or animal item from the starting material using a first decanter centrifuge. The first decanter centrifuge leaves a residue of solids and liquids. The residue forms the low-fat product.

Abstract: A plate heat exchanger and a heat exchanger plate for evaporation of a first fluid are disclosed. The heat exchanger plate comprises a heat exchanger area extending in parallel with an extension plane of the heat exchanger plate and comprising a corrugation of ridges and valleys. An edge area extends around the heat exchanger area. Portholes extend through the heat exchanger area and comprise a first inlet porthole for said first fluid. A peripheral rim surrounds the first inlet porthole and extends transversely to the extension plane from a root end to an edge. The peripheral rim has a circumferential length and comprises a flat or substantially flat portion. A restriction hole extends through the flat or substantially flat portion.

Abstract: A centrifugal separator bowl, having a vertical rotational axis, the separator bowl defining a separation space, and including an upper bowl section having a first threading, the first threading having a first inner diameter and a first outer diameter and defining an upper surface, and a lower bowl section having a second threading corresponding to the first threading of the upper bowl section, the second threading having a second outer diameter and a second inner diameter and defining a lower surface. The upper surface of the first threading of the upper bowl section and the lower surface of the second threading of the lower bowl section form a screw connection.

Abstract: A method of making an end-piece for a plate heat exchanger, wherein the end-piece includes a frame part having inner and outer portions, and an intermediate portion arranged between the inner and outer portions, with the outer wall surface of the inner portion being arranged to face a first surface of a package of heat transfer plates comprising the plate heat exchanger, and the first surface having a center portion and a peripheral portion encircling the center portion. The method includes extruding the frame part with plural cavities in the intermediate portion of the frame part that extend in the extrusion direction of the frame part and that are parallel to the frame part axis, with outer dimensions of the outer wall surface of the inner portion configured to be at least as large as outer dimensions of the center portion of the first surface heat transfer plate package.

Abstract: An exchangeable separation insert for a centrifugal separator includes a rotor casing enclosing a separation space in which a stack of separation discs is arranged, and first and second stationary portions. A feed inlet supplies a fluid mixture to the separation space. The insert includes a light phase outlet and a heavy phase outlet. The feed inlet is arranged at a first axial end of the rotor casing. One of the light phase outlet and heavy phase outlet is arranged at a second axial end. A first rotatable seal seals and connects the feed inlet and a second rotatable seal seals and connects one of the light phase outlet and heavy phase outlet.

Abstract: A centrifugal separation system includes a centrifugal separator, a liquid feed mixture conduit, a light phase conduit, a heavy phase conduit, and a flow control system. The flow control system includes a controller, a flow control valve arranged in a light phase conduit, a liquid feed mixture measuring device, and at a light phase measuring device and/or a heavy phase measuring device. The controller is configured to control the flow control valve based on measurements from the liquid feed mixture measuring device and measurements from the light phase measuring device and/or the heavy phase measuring device.

Abstract: A base unit and a modular centrifugal separator are disclosed. The base unit includes a stationary frame, a rotatable member, and a drive unit. The rotatable member delimits an inner space being configured for receiving at least one part of an exchangeable separation insert therein. The rotatable member is provided with a first opening at a first axial end configured for a first fluid connection of the exchangeable separation insert to extend through the first opening. The rotatable member includes a second opening at a second axial end configured for a second fluid connection of the exchangeable separation insert to extend through the second opening.

Abstract: A centrifugal separator for separation of a cell culture mixture includes a stationary frame, a rotatable assembly and a drive unit for rotating the rotatable assembly relative the frame around a vertical axis of rotation. The rotatable assembly includes a rotor casing enclosing a separation space in which a stack of separation discs is arranged to rotate around an axis of rotation. The rotor casing includes a mechanically hermetically sealed inlet and first and second mechanically hermetically sealed liquid outlets. The second mechanically hermetically sealed outlet is arranged at an axial end of the rotor casing opposite and arranged so that a separated cell phase is discharged at the rotational axis. The rotatable assembly includes an exchangeable separation insert and a rotatable member.

Abstract: A centrifugal separator bowl includes a rotor casing enclosing a separation space in which a stack of frustoconical separation discs is arranged to rotate around a vertical axis of rotation, wherein the separation discs are arranged with the imaginary apex pointing to the axially lower end of the rotor casing; a feed inlet at the axially lower end for receiving the fluid mixture to be separated; a distributor for distributing the fluid mixture from the inlet to the separation space, the distributor being arranged for guiding the fluid mixture to be separated continuously from an axially lower position at the inlet to an axially upper position in the separation space.

Abstract: A centrifugal separation system includes a centrifugal separator, a liquid feed mixture conduit, a light phase conduit, a heavy phase conduit, and a flow control system. The flow control system includes a controller, a counterpressure generating arrangement connected to a heavy phase conduit, a liquid feed mixture measuring device, and a light phase measuring device and/or a heavy phase measuring device. The counterpressure generating arrangement includes a heavy phase receiving vessel and a heavy phase pressure control arrangement connected to the vessel. The controller is configured to control the heavy phase pressure control arrangement based on measurements from the liquid feed mixture measuring device and on measurements from the light phase measuring device and/or the heavy phase measuring device in order to control a heavy phase counterpressure in the heavy phase outlet passage.

Abstract: A method for separating a cell culture mixture utilizes a centrifugal separator including a stationary frame, a rotatable assembly and a drive unit for rotating the rotatable assembly relative the frame around a vertical axis of rotation. The rotatable assembly includes a rotor casing enclosing a separation space in which a stack of separation discs is arranged to rotate around an axis of rotation. The rotor casing includes a mechanically hermetically sealed inlet for supply of the cell culture mixture to the separation space and first and second mechanically hermetically sealed liquid outlets. The second mechanically hermetically sealed outlet is arranged at an axial end of the rotor casing and arranged so that the separated cell phase is discharged at the rotational axis.

Abstract: An exchangeable separation insert for a centrifugal separator includes a feed inlet, a light phase outlet and a heavy phase outlet. Two of the feed inlet, light phase outlet and heavy phase outlet are arranged at a first axial end of the rotor casing. A first seal assembly seals and connects the two inlet/outlets to a corresponding inlet conduit and/or outlet conduits in the first stationary portion. The first seal assembly includes a rotatable part and a stationary part. The rotatable and stationary part are axially aligned and seal against each other. A first of the two inlet/outlets is arranged axially at the axis of rotation and a second of the two inlet/outlets is arranged axially outside of the first of the two inlet/outlets in such a manner that both the first and second of the two inlet/outlets are led through the rotatable part and the corresponding inlet conduit and/or outlet conduits are led through the stationary part of the first seal assembly.

Abstract: A magnetically-coupled liquid mixer has axial and radial directions, and comprises: a drive mount to be secured to a wall of a mixing tank and having a stationary closed-end cylindrical casing arranged in the axial direction and configured for protruding into the tank, a tank-external drive rotor having a rotatable first magnet array and configured to be inserted in the cylindrical casing, and an impeller configured for being rotatably-mounted on the cylindrical casing and having a plurality of radially extending blades and a second magnet array. The first and second magnet arrays in an assembled state of the mixer are configured for enabling rotary torque to be transferred from the drive rotor to the impeller by magnetic coupling between the first and second magnet arrays. An upper portion of at least one blade is curved/angled in an intended direction of rotation to help move liquid axially downwards during impeller rotation.

Abstract: An exchangeable separation insert, a modular centrifugal separator, and a method are disclosed. The exchangeable separation insert includes a rotor casing rotatable about an axis of rotation and a first stationary portion. The exchangeable separation insert includes a ring member which extends concentrically with the axis. The ring member is axially displaceable between a first position, in which the ring member abuts radially against the rotor casing and abuts radially, against the first stationary portion, and a second position, in which the ring member abuts radially against the rotor casing only, or against the first stationary portion only.

Abstract: An end-piece for a plate heat exchanger comprises a frame part having an inner portion, an outer portion and an intermediate portion arranged between the inner and outer portions. An outer wall surface of the inner portion faces a first surface of a package of heat transfer plates comprised in the plate heat exchanger. The first surface has a center portion and a peripheral portion encircling the center portion. The frame part is extruded and the intermediate portion of the frame part comprises a first number of cavities extending in an extrusion direction of the frame part. The extrusion direction is parallel to an axis of the frame part. Further, outer dimensions of the outer wall surface of the inner portion are at least as large as outer dimensions of the center portion of the first surface of the package of heat transfer plates.

Abstract: A heat transfer plate includes a heat transfer area comprising alternately arranged ridges and valleys in relation to a central extension plane of the plate. The ridges form arrows comprising first arrows, which first arrows each comprises two legs arranged on opposite sides of, and a head arranged on, a respective one of a first number of imaginary straight lines extending across the complete heat transfer area parallel to a longitudinal centre axis of the plate. Each imaginary straight line comprises at least one primary portion along which at least three of the first arrow heads are arranged, uniformly spaced. A majority of the imaginary straight lines comprise at least one secondary portion each along which an extension of the ridges and valleys on one side of the imaginary straight line is parallel with the extension of the ridges and valleys on another opposite side of the imaginary straight line.

Abstract: A plate package for a heat exchanger device includes a plurality of heat exchanger plates with mating abutment portions forming a fluid distribution element in every second plate interspace thereby forming in the respective second plate interspaces two arc-shaped flow paths wherein a respective one of the two flow paths is divided into at least three flow path sectors arranged one after the other along a respective flow path. A plate and a heat exchanger are also disclosed.