Modular Pump Rotor Assemblies

Abstract

Modular pump rotor assemblies having a rotatable driving element and a rotor that is removably connected to the driving element by at least one removable fastener are disclosed. The assemblies also have a rotor support bearing that is disposed between the rotatable driving element and the rotor. The assemblies may have a rotatable driving element that is of a type that is dynamically sealed to a pump housing, or a rotatable driving element that is of a type that is statically sealed to a pump housing, such as for use in a magnetically coupled pump or a canned-motor device.

1 . A modular pump rotor assembly comprising a rotatable driving element and a rotor, wherein the rotor is removably connected to the rotatable driving element by at least one removable fastener. 
     
     
         2 . The modular pump rotor assembly of  claim 1 , further comprising a rotor support bearing, wherein the rotor support bearing is disposed between the rotatable driving element and the rotor. 
     
     
         3 . The modular pump rotor assembly of  claim 1 , wherein the rotatable driving element further comprises a rotatable shaft. 
     
     
         4 . The modular pump rotor assembly of  claim 3 , further comprising a clamp plate disposed between and removably connected to the rotatable shaft and the rotor. 
     
     
         5 . The modular pump rotor assembly of  claim 4 , wherein modular pump rotor assembly further comprises a rotor support bearing, and wherein the rotor support bearing is disposed between the rotatable shaft and the clamp plate. 
     
     
         6 . The modular pump rotor assembly of  claim 1 , wherein the rotatable driving element further comprises a rotatable inner magnet assembly. 
     
     
         7 . The modular pump rotor assembly of  claim 6 , wherein the modular pump rotor assembly further comprises a rotor support bearing, and wherein the rotor support bearing is disposed between the rotatable inner magnet assembly and the rotor. 
     
     
         8 . The modular pump rotor assembly of  claim 1 , wherein the rotatable driving element is configured to be separately removably connected to at least two rotors having different configurations. 
     
     
         9 . The modular pump rotor assembly of  claim 1 , wherein the at least one removable fastener that removably connects the rotor to the rotatable driving element further comprises a plurality of fasteners that are located in a symmetrical configuration with respect to a rotational axis of the rotor. 
     
     
         10 . A modular pump rotor assembly for use in a pump having a housing and a seal that engages the housing, the modular pump rotor assembly comprising a rotatable driving element and a rotor, wherein the rotor is removably connected to the rotatable driving element by at least one removable fastener. 
     
     
         11 . The modular pump rotor assembly for use in a pump of  claim 10 , further comprising a rotor support bearing, wherein the rotor support bearing is removably disposed between the rotatable driving element and the rotor. 
     
     
         12 . The modular pump rotor assembly for use in a pump of  claim 10 , wherein the modular pump rotor assembly is for use in a pump housing having a dynamic shaft seal and the rotatable driving element includes a rotatable shaft that engages the dynamic shaft seal. 
     
     
         13 . The modular pump rotor assembly for use in a pump of  claim 12 , wherein the modular pump rotor assembly further comprises a clamp plate removably connected to the rotatable shaft by at least one removable fastener and wherein the rotor is removably connected to the clamp plate by at least one removable fastener. 
     
     
         14 . The modular pump rotor assembly for use in a pump of  claim 13 , further comprising a rotor support bearing, wherein the rotor support bearing is disposed between the rotatable shaft and the clamp plate. 
     
     
         15 . The modular pump rotor assembly for use in a pump of  claim 14 , wherein the rotor support bearing is clamped between the rotatable shaft and the clamp plate when the at least one removable fastener that connects the clamp plate to the rotatable shaft is installed. 
     
     
         16 . The modular pump rotor assembly for use in a pump of  claim 15 , wherein the at least one removable fastener that removably connects the rotor to the clamp plate further comprises a plurality of removable fasteners that are located in a symmetrical configuration with respect to a rotational axis of the rotor. 
     
     
         17 . The modular pump rotor assembly for use in a pump of  claim 10 , wherein the rotatable driving element is configured to be separately removably connected to at least two rotors having different configurations. 
     
     
         18 . The modular pump rotor assembly for use in a pump of  claim 10 , wherein the modular pump rotor assembly is for use in a pump housing having a static seal between the pump housing and the rotatable driving element of the modular pump rotor assembly and wherein the rotatable driving element includes a rotatable magnetic driving element and the rotatable magnetic driving element does not engage the static seal. 
     
     
         19 . The modular pump rotor assembly for use in a pump of  claim 18 , wherein the rotor is removably connected to the rotatable magnetic driving element by at least one removable fastener, and the modular pump rotor assembly further comprises a rotor support bearing wherein the rotor support bearing is disposed between the rotatable magnetic driving element and the rotor. 
     
     
         20 . The modular pump rotor assembly for use in a pump of  claim 18  wherein the rotatable magnetic driving element further comprises a rotatable inner magnet assembly that includes magnets. 
     
     
         21 . The modular pump rotor assembly for use in a pump of  claim 20  wherein the rotatable inner magnet assembly further comprises a sleeve that covers the magnets. 
     
     
         22 . The modular pump rotor assembly for use in a pump of  claim 21 , wherein the rotatable inner magnet assembly further comprises a magnet mounting portion and the sleeve that covers the magnets is sealed to the magnet mounting portion. 
     
     
         23 . The modular pump rotor assembly for use in a pump of  claim 22 , wherein the sleeve further comprises an annular outer wall having indentations that correspond to and bias the magnets inward against the magnet mounting portion.