A vertical cuttings dryer (VCD) can be used to separate solid particulate from entrained liquid. In some examples, the VCD includes a screen mounted coaxially with an internal wiper housing that carriers a wiper sweeping out an annular space between the screen and wiper housing. The VCD may have a first motor connected through drive shaft to the screen and a second motor connect through a separate drive shaft to the wiper housing. A controller can independently control the speed of the first motor and the second motor to independently a magnitude of centrifugal force applied to material being processed as well as a residence time of the material being processed in the annular space.

An oil separator with a housing, in which is rotatably mounted a rotor containing a drive element, an oil separating element and a shaft for driving the oil separating element of the rotor via the shaft of the rotor around the shaft axis. At least one element of the rotor is seated in such a way that it is displaceable via an actuator element axially from a first inoperative positive to a second operating position.

An oil separator with a housing, in which is rotatably mounted a rotor containing a drive element, an oil separating element and a shaft for driving the oil separating element of the rotor via the shaft of the rotor around the shaft axis. At least one element of the rotor is seated in such a way that it is displaceable via an actuator element axially from a first inoperative positive to a second operating position.

Damage caused by displacement of a rotating shaft is prevented with an acceleration sensor. A centrifuge according to the present invention includes a rotor, a driving source that rotates the rotor, a rotating shaft that links the rotor with the driving source, an acceleration sensor, and a control unit. The acceleration sensor outputs a value indicating acceleration in at least two different directions which are orthogonal to an axial direction of the rotating shaft. The control unit obtains a displacement conversion value corresponding to a value, which is obtained by dividing a value which is proportional to acceleration based on a value indicating acceleration and outputted by the acceleration sensor, by a value which is proportional to a square of an angular velocity of the rotor, and stops rotation of the rotor when the displacement conversion value satisfies a displacement determination criterion which is predetermined and indicates that displacement is large.

Damage caused by displacement of a rotating shaft is prevented with an acceleration sensor. A centrifuge according to the present invention includes a rotor, a driving source that rotates the rotor, a rotating shaft that links the rotor with the driving source, an acceleration sensor, and a control unit. The acceleration sensor outputs a value indicating acceleration in at least two different directions which are orthogonal to an axial direction of the rotating shaft. The control unit obtains a displacement conversion value corresponding to a value, which is obtained by dividing a value which is proportional to acceleration based on a value indicating acceleration and outputted by the acceleration sensor, by a value which is proportional to a square of an angular velocity of the rotor, and stops rotation of the rotor when the displacement conversion value satisfies a displacement determination criterion which is predetermined and indicates that displacement is large.

A method and a device for stopping a magnetic suspension centrifuge includes: a frequency-conversion cabinet connected with the magnetic suspension centrifuge judges a stopping state of the magnetic suspension centrifuge; if the stopping state is judged to satisfy a preset condition, the frequency-conversion cabinet switches a operating mode of a motor of the magnetic suspension centrifuge from an electrically-powered state mode to a power generation state mode, so as to convert the inertia mechanical energy of the motor when the motor stops into electric energy; and the frequency-conversion cabinet leads the electric energy into a power grid, so as to consume the electric energy. Accordingly, the problem that the motor of the magnetic suspension centrifuge cannot be rapidly switched from an operating state to a stopping state when an exception occurs to a bearing or a bearing controller in the prior art can be solved.

A method and a device for stopping a magnetic suspension centrifuge includes: a frequency-conversion cabinet connected with the magnetic suspension centrifuge judges a stopping state of the magnetic suspension centrifuge; if the stopping state is judged to satisfy a preset condition, the frequency-conversion cabinet switches a operating mode of a motor of the magnetic suspension centrifuge from an electrically-powered state mode to a power generation state mode, so as to convert the inertia mechanical energy of the motor when the motor stops into electric energy; and the frequency-conversion cabinet leads the electric energy into a power grid, so as to consume the electric energy. Accordingly, the problem that the motor of the magnetic suspension centrifuge cannot be rapidly switched from an operating state to a stopping state when an exception occurs to a bearing or a bearing controller in the prior art can be solved.

The invention relates to a method for operating a centrifugal device. The invention furthermore relates to a centrifugal device. The centrifugal device is provided with a drum which can be driven at a variable speed of rotation, with a frame and with vibration dampers arranged between the frame and the drum. The invention furthermore relates to a computer program product.

The invention relates to a method for operating a centrifugal device. The invention furthermore relates to a centrifugal device. The centrifugal device is provided with a drum which can be driven at a variable speed of rotation, with a frame and with vibration dampers arranged between the frame and the drum. The invention furthermore relates to a computer program product.

A centrifuge apparatus includes a plurality of modules, each including a rotatable body, housing and flying leads, assembly. The modules can be selectively interconnected to allow adaptation of the processing capacity of the apparatus to process a liquid to remove components therefrom and/or to process a number of different liquids and allow the separation of one or more types of components therefrom simultaneously.