A vacuum centrifuge (10) has a housing (15) and a vacuum chamber (14a) which is disposed in the housing (14) and is connected to a vacuum pump (26) via a suction line system (24, 48) in order to generate a required vacuum in the vacuum chamber (14a). The vacuum centrifuge (10) has a rotor (12), mounted rotatably about its rotor axis (12a) in the vacuum chamber (14a) and provided with sample container receptacles (64) for introducing sample containers (66) into the sample container receptacles (64). The vacuum centrifuge (10) also comprises a cover (16) disposed on the housing (14), closes the vacuum chamber (14a) in a vacuum-tight manner and, in the open state, frees the rotor (12) to enable loading and unloading of the rotor (12) with sample containers (66). Only one drive motor (52a) is provided for the rotor (12), disposed outside the vacuum chamber (14a) and coupled to the rotor (12) in the vacuum chamber (14a) to transmit the driving torque as part of a first drive mechanism. The rotor (12) is designed as a rotor of a dual centrifuge.

An apparatus and method for performing counter flow centrifugation. The apparatus includes at least one vessel, a gear fixedly attached to at least a portion of the vessel such that rotation of the gear rotates the vessel, a handle assembly and a plurality of tubes extending through the handle assembly and to the vessel. The gear is configured to be rotated by a drive system. The handle assembly is rotatably attached to the gear and includes an opening therein. At least a portion of the gear engages at least a portion of the drive system through the opening. The handle assembly is configured to be rotated by the drive system. The vessel can be rotated at twice a speed of the handle assembly when the apparatus is inserted into a bowl of the counter flow centrifuge.

An apparatus and method for performing counter flow centrifugation. The apparatus includes at least one vessel, a gear fixedly attached to at least a portion of the vessel such that rotation of the gear rotates the vessel, a handle assembly and a plurality of tubes extending through the handle assembly and to the vessel. The gear is configured to be rotated by a drive system. The handle assembly is rotatably attached to the gear and includes an opening therein. At least a portion of the gear engages at least a portion of the drive system through the opening. The handle assembly is configured to be rotated by the drive system. The vessel can be rotated at twice a speed of the handle assembly when the apparatus is inserted into a bowl of the counter flow centrifuge.

A plate separator for separating a substance from a substance mixture, with a separator device and an electric motor for rotary driving of the separator device. The separator device is coupled to the electric motor in a rotationally fixed manner. The electric motor is configured as an external rotor and has an inner-lying stator and an outer-lying rotor in the radial direction with respect to an axis of rotation. The separator device is fastened to the rotor and extends outward from the rotor in the radial direction. The stator is arranged, as viewed in the axial direction with respect to the axis of rotation, at least partially overlapping with the separator device.

A plate separator for separating a substance from a substance mixture, with a separator device and an electric motor for rotary driving of the separator device. The separator device is coupled to the electric motor in a rotationally fixed manner. The electric motor is configured as an external rotor and has an inner-lying stator and an outer-lying rotor in the radial direction with respect to an axis of rotation. The separator device is fastened to the rotor and extends outward from the rotor in the radial direction. The stator is arranged, as viewed in the axial direction with respect to the axis of rotation, at least partially overlapping with the separator device.

A drive device for a solid bowl screw centrifuge includes a motor for rotating a drum of the centrifuge, a transmission which is connected between the motor and the drum, and a cooling device for cooling the transmission during operation when the drum is rotating. The cooling device is an annular body which is fitted on the outside of the transmission and has an air guiding device that conducts air from farther outwards radially inwards onto a surface of the transmission.

A drive device for a solid bowl screw centrifuge includes a motor for rotating a drum of the centrifuge, a transmission which is connected between the motor and the drum, and a cooling device for cooling the transmission during operation when the drum is rotating. The cooling device is an annular body which is fitted on the outside of the transmission and has an air guiding device that conducts air from farther outwards radially inwards onto a surface of the transmission.

The present disclosure relates to a centrifugal separator (1), which comprises a rotatable drum (5) having a wall (50), an annular chamber (7), defined along the longitudinal axis (49) of the rotatable drum (5) and bordering the wall (50), an annular screw feeder (90) accommodated rotatably in the annular chamber (7) for moving a mixture of substances in the liquid phase and in the solid phase longitudinally through the annular chamber (7), and separation nets (100) arranged in the wall (50) of the rotatable drum (5). The separation nets (100) have meshes for filtering the solid phase from the liquid phase by rotation of the drum (5). The separation nets (100) are movable relative to the wall (50).

The present disclosure relates to a centrifugal separator (1), which comprises a rotatable drum (5) having a wall (50), an annular chamber (7), defined along the longitudinal axis (49) of the rotatable drum (5) and bordering the wall (50), an annular screw feeder (90) accommodated rotatably in the annular chamber (7) for moving a mixture of substances in the liquid phase and in the solid phase longitudinally through the annular chamber (7), and separation nets (100) arranged in the wall (50) of the rotatable drum (5). The separation nets (100) have meshes for filtering the solid phase from the liquid phase by rotation of the drum (5). The separation nets (100) are movable relative to the wall (50).

The invention discloses an analytical sample preparation device and an analytical sample preparation method, which comprises a base (1), an elastic connection body (5), a group of a synchronous unidirectional bearing inner ring (41) and a synchronous unidirectional bearing outer ring (42), a group of an eccentric unidirectional bearing inner ring (61) and an eccentric unidirectional bearing outer ring (62), and a synchronous fixed ring (2) and a motor (31) on the base (1). The eccentric unidirectional bearing inner ring (61) is connected with an eccentric shaft (32) extending from a motor (31). The eccentric unidirectional bearing outer ring (62) is fixed to an eccentric shaft sleeve (9). The eccentric shaft sleeve (9), the eccentric shaft (32), the eccentric unidirectional bearing inner ring (61), and the eccentric unidirectional bearing outer ring (62) have their center of mass disposed on a line extending from the center line of the motor (31). The eccentric unidirectional bearing inner ring (61) and the eccentric unidirectional bearing outer ring (62) can only rotate in direction A, while the synchronous unidirectional bearing outer ring (41) and the synchronous unidirectional bearing outer ring (42) can only rotate in a direction opposite to direction A.