The present invention relates to a scraper device for centrifuge comprising a tubular runner mounted on a fixed base with the capacity to rotate around and slide along a vertical central axis through the action of a rotation actuator and an up and down actuator, respectively, a scraper assembly including a blade and an blow nozzle fixed at a lower end of the tubular runner, a tubular rod coaxially installed inside the tubular runner and fixed at its upper end to the fixed base by means of a support, and upper and lower gas pipes telescopically coupled to one another, located inside the tubular rod, fixed to the tubular rod and to the tubular runner, respectively, and connected to a pressurized gas supply device and to the blow nozzle, respectively.

A centrifugal separator for cleaning gas containing contaminants includes a stationary casing, enclosing a separation space through which a gas flow is permitted, a gas inlet extending through the stationary casing and permitting supply of the gas to be cleaned, a rotating member including a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation, a gas outlet configured to permit discharge of cleaned gas and including an outlet opening through a wall of the stationary casing, a drainage outlet configured to permit discharge of liquid impurities separated from the gas to be cleaned, and a drive member, for rotating the rotating member. The centrifugal separator further includes a control unit configured to control the drive member to rotate the rotating member at a first speed during a separation phase and at a second speed, which is higher than the first speed, during a cleaning phase to remove clogging on or between said separation members, wherein the cleaning phase is shorter in time than the separation phase.

A centrifugal separator for cleaning gas containing contaminants includes a stationary casing, enclosing a separation space through which a gas flow is permitted, a gas inlet extending through the stationary casing and permitting supply of the gas to be cleaned, a rotating member including a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation, a gas outlet configured to permit discharge of cleaned gas and including an outlet opening through a wall of the stationary casing, a drainage outlet configured to permit discharge of liquid impurities separated from the gas to be cleaned, and a drive member, for rotating the rotating member. The centrifugal separator further includes a control unit configured to control the drive member to rotate the rotating member at a first speed during a separation phase and at a second speed, which is higher than the first speed, during a cleaning phase to remove clogging on or between said separation members, wherein the cleaning phase is shorter in time than the separation phase.

A centrifuge for cleaning a reaction vessel unit comprises a rotor and a rotor chamber in which the rotor is positioned and supported in rotary fashion. The rotor chamber is delimited by a housing having a drainage channel beneath the rotor. Adjacent to the channel, the inner surface of the housing is embodied in the form of a funnel that feeds into the channel. This centrifuge does not require a suction pump for suctioning liquids from the rotor chamber. In addition, the centrifuge can be provided with an exchangeable module that delimits the rotor chamber and includes the rotor. The exchangeable module can be exchanged after a predetermined amount of use and replaced with another. It is also possible, however, for the module to be removed from the centrifuge, cleaned, and reinserted.

A centrifuge for cleaning a reaction vessel unit comprises a rotor and a rotor chamber in which the rotor is positioned and supported in rotary fashion. The rotor chamber is delimited by a housing having a drainage channel beneath the rotor. Adjacent to the channel, the inner surface of the housing is embodied in the form of a funnel that feeds into the channel. This centrifuge does not require a suction pump for suctioning liquids from the rotor chamber. In addition, the centrifuge can be provided with an exchangeable module that delimits the rotor chamber and includes the rotor. The exchangeable module can be exchanged after a predetermined amount of use and replaced with another. It is also possible, however, for the module to be removed from the centrifuge, cleaned, and reinserted.

There is provided a filter sub-assembly that comprises a rotary vessel having a rotor body and a closure member to close an opening of the rotor body. The sub-assembly further comprises a liner that is receivable within the rotor body to line an inner surface thereof. The liner is also fluidly sealable to the closure member by a centrifugal force directed radially outwardly from an axis of rotation, about which the rotary vessel is rotatable. The sub-assembly has particular application in a centrifugal filter of a motor vehicle, for example for cleaning engine oil in an engine lubrication system.

A washing liquid distribution element attached to an upper portion of a rotor body includes an upper distribution element and a lower distribution element. A washing liquid is supplied from a washing liquid introduction port during rotation of a rotor and enters a recessed inner portion of the lower distribution element. The washing liquid entered in the inner portion moves from the vicinity of rotation center toward a radially outer side to climb an inclined part by centrifugal force. Washing liquid passages are formed in a radial pattern at a lower annular part at a tip of the inclined part, and the washing liquid is discharged radially outward from discharge ports of the washing liquid passages. Formation of the inclined part makes it possible to evenly distribute the washing liquid into test tubes.

A washing liquid distribution element attached to an upper portion of a rotor body includes an upper distribution element and a lower distribution element. A washing liquid is supplied from a washing liquid introduction port during rotation of a rotor and enters a recessed inner portion of the lower distribution element. The washing liquid entered in the inner portion moves from the vicinity of rotation center toward a radially outer side to climb an inclined part by centrifugal force. Washing liquid passages are formed in a radial pattern at a lower annular part at a tip of the inclined part, and the washing liquid is discharged radially outward from discharge ports of the washing liquid passages. Formation of the inclined part makes it possible to evenly distribute the washing liquid into test tubes.

A facility for the centrifugal clarification of a suspension includes a centrifuge and a device with a container having a tubular envelope surface at least in sections for conducting the medium, which is arranged on a liquid outlet of the centrifuge. The container with a tubular envelope surface at least in sections includes an inlet for supplying a pressurizing gas, and the volume of the container with a tubular envelope surface at least in sections is smaller than the double receiving volume of the centrifuge.

A facility for the centrifugal clarification of a suspension includes a centrifuge and a device with a container having a tubular envelope surface at least in sections for conducting the medium, which is arranged on a liquid outlet of the centrifuge. The container with a tubular envelope surface at least in sections includes an inlet for supplying a pressurizing gas, and the volume of the container with a tubular envelope surface at least in sections is smaller than the double receiving volume of the centrifuge.