Glanded (Dry-Motor) Pump

Design

The uniform feature of glanded pumps is the separation between the pumped fluid and the drive motor. The connection between the impeller in the pump body and the motor is made by either a common shaft or by coupled shaft parts. The rotating motor component remains dry (thus the term Dry-Motor Pump). The rotor support by means of roller bearings requires separate lubrication. The pumps are normally driven by IEC-standard electric motors but also by special design motors up to explosion-protected motors.

Pump Types / Function

Glanded pumps are of two distinctly different designs: - Monobloc Glanded Centrifugal Pump - also known as close coupled. - DIN-Standard Centrifugal End-Suction Pumps - also known as long coupled or bed-plate mounted pumps. Glanded pumps produce higher noise levels than glandless pumps, the noise being generated by roller or ball bearings and the fan which cools the motor. Pump inherent noise itself - flow or bearing noise - can be considered as negligible unless created by exceptional operating conditions (Cavitation, etc.).

Related Topics

• Shaft Seals 

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