Modular Pump Rotor Assemblies

Inactive Publication Date: 2012-07-12
PEOPLEFLO MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0035]Thus, the present disclosure presents alternatives to integrally formed rotor and rotatable drive portions that previously were not modular in design and that exhibited the aforementioned disadvantages. The present disclosure provides structures that permit removal of a rotor and / or rotor support bearing from a rotatable drive element without requiring the time and labor-intensive full removal of a pump from a piping system, and in some instances the potentially dangerous conditions such as the need to decouple a magnetic drive element from an outer driven element in a magnetically coupled arrangement.

Problems solved by technology

The existing designs have inherent disadvantages because the pump rotor, which is a primary wear component, is expensive and difficult to repair, replace or upgrade.
Because this process is time consuming, some users keep spare pumps on hand in an effort to maintain production uptime.
This increases inventory costs and requires a complete interim pump installation, with the accompanying connections of all structural and system elements.
The rotor support bearings also are expensive to repair, replace or upgrade.
Thus, the pump must be removed from service, incurring the same setbacks as when servicing a rotor.
Another disadvantage of existing designs is that the rotor and rotor support bearings are unique to a given pump type and installation.
This raises a significant safety issue because separating the magnets of the driving portion from the outer magnet assembly requires overcoming large magnetic forces, which requires very significant decoupling forces applied to separate the magnetic coupling and then difficulty in controlling the driving portion once it is decoupled.

Method used

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  • Modular Pump Rotor Assemblies
  • Modular Pump Rotor Assemblies
  • Modular Pump Rotor Assemblies

Examples

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Embodiment Construction

[0045]Referring generally to FIGS. 1 and 2, it will be appreciated that a modular rotor assembly 10 is illustrated and it includes a rotatable driving element 12 and a rotor 14 removably connected to the rotatable driving element 12 by at least one removable fastener. In this example, a rotor support bearing 16 is disposed between the rotatable driving element 12 and the rotor 14. In this example, the rotatable driving element 12 is in the configuration of and may also be referred to as a rotatable shaft. The rotor 14 of this example also may be referred to as an outer gear, such as may be used in an internal gear pump.

[0046]This example further includes a clamp plate 18 that is disposed between the rotatable driving element 12 and the rotor 14. While it will be understood that one or more other connecting elements or fasteners may be used, the clamp plate 18 is shown as being connected to the rotor 14 by removable fasteners 20. The removable fasteners 20 are shown as threaded bolts...

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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.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention generally relates to pump rotor and rotatable driving element assemblies, and more particularly to pump rotor assemblies that include a rotor and rotatable driving element that are connected together. The assemblies have two main versions, based on the type of driving element and seal between the housing and the driving element, with the first being dynamically-sealed and the second being statically-sealed, such as with a magnetically coupled or canned-motor version.[0003]2. Discussion of the Prior Art[0004]There are a variety of pump assembly designs that include a rotor, otherwise known as a drive pump element, such as for example an impeller, drive gear, drive screw or lobe. It is common for such a rotor or drive pump element to be integrally formed with a rotatable driving element, such as for example a drive shaft, inner magnet or armature of a centrifugal or rotary pump. Such structures may b...

Claims

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Application Information

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IPC IPC(8): F04B39/00F04B9/00
CPCF04C15/0038F04C15/0069F04D29/20F04C2240/70F04C15/0076
InventorSEXTON, JASON M.BLANKEMEIER, WILLIAM R.TRNINICH, RADOSAV
OwnerPEOPLEFLO MFG