Mixer for aseptic liquids

A mixer for an aseptic liquid in a vessel having a wall and having an opening therein and containing the aseptic liquid to be mixed comprising a weldment post extending through the opening in the wall and being adapted to be welded into the wall to form a liquid-tight seal with the wall of the vessel, the weldment nest having a distal extremity inside the wall and having a proximal extremity outside the wall, the weldment post having a bore therein extending out through the proximal extremity of the weldment post, a magnet drive assembly disposed in the bore in the weldment nost and a drive motor carried by the weldment post for driving the magnet drive assembly, a hub rotatably mounted on the weldment post, impellers mounted on the hub, a magnet driven assembly mounted in the hub and being disposed in close proximity to the magnet drive assembly but being separated therefrom by a liquid-tight seal, said magnet drive assembly having a plurality of circumferentially spaced apart driven permanent magnets and further including means for caging said driven permanent magnets to prevent movement of the driven permanent magnets relative to the hub, said hub being provided with a proximal extremity having notches formed therein opening downwardly and sidewardly from the hub for causing agitation of the aseptic liquid in the vessel as the hub is rotated.

A mixer for an aseptic liquid in a vessel having a wall and having an opening therein and containing the aseptic liquid to be mixed comprising a weldment post extending through the opening in the wall and being adapted to be welded into the wall to form a liquid-tight seal with the wall of the vessel, the weldment cost having a distal extremity inside the wall and having a proximal extremity outside the wall, the weldment Post having a bore therein extending out through the proximal extremity of the weldment post, a magnet drive assembly disposed in the bore in the weldment post and a drive motor carried by the weldment post for driving the magnet drive assembly, a hub rotatably mounted on the weldment post, impellers mounted on the hub, a magnet driven assembly mounted in the hub and being disposed in close proximity to the magnet drive assembly but being separated therefrom by a liquid-tight seal, said magnet drive assembly having a plurality of circumferentially spaced apart driven permanent magnets and further including means car caging said driven permanent magnets to prevent movement of the driven permanent magnets relative to the hub, a sensor element carried by the proximal extremity of the hub and means external of the tank for sensing rotation of the sensor element carried by the hub.

A mixer for an aseptic liquid in a vessel having a wall and having an opening therein and containing the aseptic liquid to be mixed comprising a weldment post extending through the opening in the wall and being adapted to be welded into the wall to form a liquid-tight seal with the wall of the vessel, the weldment post having a distal extremity inside the wall and having a proximal extremity outside the wall, the weldment post having a bore therein extending out through the proximal extremity of the weldment post, a magnet drive assembly disposed in the bore in the weldment post and a drive motor carried by the weldment nost for driving the magnet drive assembly, a hub rotatably mounted on the weldment post, impellers mounted on the hub, a magnet driven assembly mounted in the hub and being disposed in close proximity to the magnet drive assembly but being separated therefrom by a liquid-tight seal, said magnet drive assembly having a plurality of circumferentially spaced apart driven permanent magnets and further including means for caging said driven permanent magnets to prevent movement of the driven Permanent magnets relative to the hub, said means for caging said driven permanent magnets including bars encompassing at least a portion of each of said driven magnets and bonded to the hub.