Abstract: A solid bowl centrifuge includes a screw that rotates during operation, a solid material discharge, and at least one liquid outlet, which has a device for influencing an immersion depth in the separation chamber or the diameter of a separation zone in the separation chamber. The device includes one or more pressure chambers, into which a respective fluid supply line feeds, via which a gas pressure in the respective pressure chamber can be influenced such that, in the respective pressure chamber, the gas pressure is to be applied to at least one liquid surface of the exiting liquid phase, in order to influence the diameter, the immersion depth, and/or the diameter of the separation zone in the drum during operation. Respective pressure chambers are formed in the rotor. One or more functional discs are arranged in the region of the respective pressure chamber and all rotate along with the rotor.

Abstract: 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.

Abstract: A method for monitoring a screw centrifuge, such as a solid-bowl or a screen-type screw centrifuge. The screw centrifuge processes a product so that solids conveyed out of the drum with the screw are removed from the product. A current angular speed and an average angular speed of the transmission input shaft for the screw over time are determined. The current and average angular speeds are evaluated and a warning signal and/or changing one or more operating parameters of the screw centrifuge is changed if dynamic changes in the angular speed are detected during the evaluation.

Abstract: A method for monitoring a screw centrifuge, such as a solid-bowl or a screen-type screw centrifuge. The screw centrifuge processes a product so that solids conveyed out of the drum with the screw are removed from the product. A current angular speed and an average angular speed of the transmission input shaft for the screw over time are determined. The current and average angular speeds are evaluated and a warning signal and/or changing one or more operating parameters of the screw centrifuge is changed if dynamic changes in the angular speed are detected during the evaluation.

Abstract: 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.

Abstract: A method for determining the torque of a worm of a solid bowl worm centrifuge. The solid bowl worm centrifuge includes a rotatable drum and a rotatable worm, the rotatable worm being rotatable at a different rotational speed than that of the rotatable drum. The rotatable drum and rotatable worm are driven via a gear arrangement and a common single drive motor via at least one belt drive, a driving belt pulley, a driven belt pulley and a belt coupling the pulley. The method steps include determining a slip of the at least once belt drive and calculating a torque based upon the determination of the slip.

Abstract: A screw centrifuge including a drum having a rotor, the drum having two axial ends and a horizontal axis of rotation, and a screw arranged in the drum and configured to rotate relative to the drum at a speed different from a rotation speed of the drum. Also included is a bearing device located at each axial end of the drum and configured to bear the drum. Each bearing device includes a housing and a pair of cantilevers extending in opposite directions away from the housing. Further included is a pair of spring elements associated with each bearing device and configured for sprung support of the drum. Each spring is arranged between one of the cantilevers and a frame, the spring elements being located at each axial end of the drum.

Abstract: A method for determining the torque of a worm of a solid bowl worm centrifuge. The solid bowl worm centrifuge includes a rotatable drum and a rotatable worm, the rotatable worm being rotatable at a different rotational speed than that of the rotatable drum. The rotatable drum and rotatable worm are driven via a gear arrangement and a common single drive motor via at least one belt drive, a driving belt pulley, a driven belt pulley and a belt coupling the pulley. The method steps include determining a slip of the at least once belt drive and calculating a torque based upon the determination of the slip.

Abstract: A helical conveyor centrifuge, such as a solid-bowl or sieve-bowl centrifuge, includes a rotatable drum, a rotatable screw disposed within the drum, and a centrifuge drive for rotating the drum and the screw. The centrifuge drive is configured to set a differential speed between drum and screw. The centrifuge drive includes a first motor, a second motor, and a gearing arrangement disposed between the motors and also between the drum and the screw. The gearing arrangement includes a gearing arranged downstream of the motors and has a first gear, a second gear and a third gear stage. The first and second gear stages include at least four shafts. Torques are either introduced into or are taken off from the first and second gear stages. The first and second gear stages are disposed in a housing and driven by at least three of the at least four shafts.

Abstract: A solid-bowl centrifuge comprising, a centrifugal drum rotatable about a horizontal axis of rotation, the centrifugal drum including a weir to drain a liquid out of the centrifugal drum, the weir including a passage having at least one passage opening in an axial end region of the centrifugal drum that includes a drum lid: a deflector plate arranged outside the centrifugal drum and in front of the drum lid, the deflector plate being stationary during an operation of the centrifugal drum and widening at least in sections as the deflector plate extends away from the centrifugal drum: and the deflector plate including an interior jacket, and a distance of the interior jacket from the horizontal axis of rotation not being constant but widening.

Abstract: A screw centrifuge includes a drum having a rotor. The drum includes two axial ends and a horizontal axis of rotation. A screw is arranged in the drum and configured to rotate relative to the drum at a speed different from a rotation speed of the drum. A bearing device is located at each axial end of the drum and is configured to bear the drum. A plurality of spring elements are configured for sprung support of the drum on a frame and at least one of the plurality of spring elements is located at each axial end of the drum.

Abstract: A helical conveyor centrifuge, such as a solid-bowl or sieve-bowl centrifuge, includes a rotatable drum, a rotatable screw disposed within the drum, and a centrifuge drive for rotating the drum and the screw. The centrifuge drive is configured to set a differential speed between drum and screw. The centrifuge drive includes a first motor, a second motor, and a gearing arrangement disposed between the motors and also between the drum and the screw. The gearing arrangement includes a gearing arranged downstream of the motors and has a first gear, a second gear and a third gear stage. The first and second gear stages include at least four shafts. Torques are either introduced into or are taken off from the first and second gear stages. The first and second gear stages are disposed in a housing and driven by at least three of the at least four shafts.

Abstract: A solid-bowl centrifuge comprising, a centrifugal drum rotatable about a horizontal axis of rotation, the centrifugal drum including a weir to drain a liquid out of the centrifugal drum, the weir including a passage having at least one passage opening in an axial end region of the centrifugal drum that includes a drum lid: a deflector plate arranged outside the centrifugal drum and in front of the drum lid, the deflector plate being stationary during an operation of the centrifugal drum and widening at least in sections as the deflector plate extends away from the centrifugal drum: and the deflector plate including an interior jacket, and a distance of the interior jacket from the horizontal axis of rotation not being constant but widening.

Abstract: A control structure for the adjusting motor of an electric camshaft adjuster in an internal combustion engine is provided. The control structure includes a controller which processes measuring signals of the internal combustion engine to control data for the adjusting motor. A controller which has meaningful values for the adjusted setpoint rotational speed of the adjusting motor, even when the input differential signal has a zero value, is obtained by applying the signal of an uncontrolled rotational speed to the output signal of a controlled setpoint rotational speed.

Abstract: A control structure for the adjusting motor of an electric camshaft adjuster in an internal combustion engine is provided. The control structure includes a controller which processes measuring signals of the internal combustion engine to control data for the adjusting motor. A controller which has meaningful values for the adjusted setpoint rotational speed of the adjusting motor, even when the input differential signal has a zero value, is obtained by applying the signal of an uncontrolled rotational speed to the output signal of a controlled setpoint rotational speed.

Abstract: A control structure for the adjusting motor (8) of an electric camshaft adjuster (6) in an internal combustion engine (1) is provided. The control structure includes a controller (19) which processes measuring signals of the internal combustion engine (1) to control data for the adjusting motor (8). A controller (19) which has meaningful values for the adjusted setpoint rotational speed of the adjusting motor (8), even when the input differential signal has a zero value, is obtained by applying the signal of an uncontrolled rotational speed (21) to the output signal (20) of a controlled setpoint rotational speed.

Abstract: A control structure for the adjusting motor (8) of an electric camshaft adjuster (6) in an internal combustion engine (1) is provided. The control structure includes a controller (19) which processes measuring signals of the internal combustion engine (1) to control data for the adjusting motor (8). A controller (19) which has meaningful values for the adjusted setpoint rotational speed of the adjusting motor (8), even when the input differential signal has a zero value, is obtained by applying the signal of an uncontrolled rotational speed (21) to the output signal (20) of a controlled setpoint rotational speed.