A pump arrangement including a magnetic clutch pump arrangement, the pump arrangement including an inner chamber formed by a housing arrangement, a separating can which hermetically seals a chamber enclosed by it with respect to the inner chamber, an impeller shaft that can be driven in rotation about an axis of rotation, an impeller arranged on one end of the impeller shaft, an inner rotor arranged on the other end of the impeller shaft, a drive device, a drive shaft that can be driven in rotation about the axis of rotation by the drive device, and an outer rotor arranged on the drive shaft and cooperating with the inner rotor. The outer rotor includes a first carrier element and a second carrier element connected to the first carrier element. The first carrier element includes a thermal barrier device.

A blood flow assist system can include an impeller assembly including an impeller shaft and an impeller on the impeller shaft, a primary flow pathway disposed along an exterior surface of the impeller. The system can include a rotor assembly at a proximal portion of the impeller shaft. A secondary flow pathway can be disposed along a lumen of the impeller shaft. During operation of the blood flow assist system, blood can be pumped proximally along the primary flow pathway and the secondary flow pathway. The system can include a sleeve bearing distal the impeller. The system can include a drive unit having a distal end disposed distal a proximal end of the second impeller. The drive unit comprising a drive magnet and a drive bearing between the drive magnet and the impeller assembly.

A downhole-type system includes a rotatable shaft; a sensor that can sense an axial position of the shaft and generate a first signal corresponding to the axial position of the shaft; a controller coupled to the sensor, in which the controller can receive the first signal generated by the sensor, determine an amount of axial force to apply to the shaft to maintain a target axial position of the shaft, and transmit a second signal corresponding to the determined amount of axial force; and multiple magnetic thrust bearings coupled to the shaft and the controller, in which each magnetic thrust bearing can receive the second signal from the controller and modify a load, corresponding to the second signal, on the shaft to maintain the target axial position of the shaft.

A blood flow assist system can include an impeller assembly including an impeller shaft and an impeller on the impeller shaft, a primary flow pathway disposed along an exterior surface of the impeller. The system can include a rotor assembly at a proximal portion of the impeller shaft. A secondary flow pathway can be disposed along a lumen of the impeller shaft. During operation of the blood flow assist system, blood can be pumped proximally along the primary flow pathway and the secondary flow pathway. The system can include a sleeve bearing distal the impeller. The system can include a drive unit having a distal end disposed distal a proximal end of the second impeller. The drive unit comprising a drive magnet and a drive bearing between the drive magnet and the impeller assembly.

An electric centrifugal pump includes a water pump shell, a water sealing bearing, a water pump impeller, a spring washer, an inner motor cover, a bearing pedestal, a front rotor bearing, a motor stator, a motor rotor, a shaft of the motor rotor, a rear bearing of the motor rotor, a leading impeller, a leading impeller cover, a water pump driving control panel, a controller cover and a motor shell, and an internal forced cooling system is formed by the water inlet cavity of the water pump, an axial through hole of the shaft of the motor rotor, the leading impeller, a leading impeller cavity of the leading impeller, a spiral overflowing hole of the inner motor cover, a rotor cavity, a spiral overflowing hole of the bearing pedestal and the water pump impeller which are sequentially communicated.

A fluid pump assembly is provided. The pump has a pair of units magnetically coupled to each other. The first unit contains a drive motor and a magnetic assembly. The second unit contains a magnetic assembly and a blade of a propeller/impeller for imparting movement to a fluid. As the first unit is activated by the drive motor, a magnetic flux is created which in turn rotates the magnetic assembly in the second unit, driving the blade.

A pump may include a stator, a rotor, and an impeller. The stator may include one or more electromagnets and one or more permanent magnets. The rotor may include an armature, one or more complementary permanent magnets, and a pull magnet configured to position the rotor in an axial direction. The rotor may be disposed within the stator. The complementary permanent magnets and the one or more permanent magnets of the stator may create magnetic bearings. The armature may be aligned with at least one of the electromagnets of the stator and configured to rotate the rotor with respect to the stator. The impeller may be coupled to the rotor.

A pump arrangement including a magnetic clutch pump arrangement, the pump arrangement including an inner chamber formed by a housing arrangement, a separating can which hermetically seals a chamber enclosed by it with respect to the inner chamber, an impeller shaft that can be driven in rotation about an axis of rotation, an impeller arranged on one end of the impeller shaft, an inner rotor arranged on the other end of the impeller shaft, a drive device, a drive shaft that can be driven in rotation about the axis of rotation by the drive device, and an outer rotor arranged on the drive shaft and cooperating with the inner rotor. The outer rotor includes a first carrier element and a second carrier element connected to the first carrier element. The first carrier element includes a thermal barrier device.

A magnetic pump is provided that includes a magnet can and an impeller that are individually formed, that is capable of easily performing assembling/disassembling, that has high workability during manufacturing or maintenance, and that has high strength in a connection part between the magnet can and the impeller, and to provide a rotary body for the magnetic pump. Particularly, the fitted connection part between the magnet can and the impeller is a spigot ferrule that has a simple structure and that is firmly connectable, and a cutout portion and a convex portion are formed at a part at which an innermost part of a socket and a front end part of a spigot face each other, and the connection strength can be further heightened by twisting and turning the spigot-ferrule part, and the return of a turned state of the spigot-ferrule part is prevented by fitting the restraining member into a gap generated behind the convex portion in the turning direction of the convex portion that has entered the cutout portion and the cutout portion, and therefore the fitted connection part is never loosened.

A blood flow assist system can include an impeller assembly including an impeller shaft and an impeller on the impeller shaft, a primary flow pathway disposed along an exterior surface of the impeller. The system can include a rotor assembly at a proximal portion of the impeller shaft. A secondary flow pathway can be disposed along a lumen of the impeller shaft. During operation of the blood flow assist system, blood can be pumped proximally along the primary flow pathway and the secondary flow pathway. The system can include a sleeve bearing distal the impeller. The system can include a drive unit having a distal end disposed distal a proximal end of the second impeller. The drive unit comprising a drive magnet and a drive bearing between the drive magnet and the impeller assembly.