Vertical inline axial flow pumps
Vertical axial in-line pumps are pumps with a circumferential radially inclined impeller and volute casing, designed for continuous flow processes. The vertical in-line pumps are designed to handle high flows and low head applications. They are used in many industries, such as water, wastewater, chemicals, petrochemical and food processing.
Characteristics
The axial in-line pumps feature:
• High flow rate, low head capability.
• Fewer moving parts than conventional pump designs. This increases efficiency and allows for greater reliability.
• Ease of maintenance, as all wetted parts can be removed without dismantling the motor or bearing housing.
• Light weight, enabling easy installation and movement.
• Low sound levels and vibration free operation.
• Vertical pumping action aids in easy priming and minimizes air-locking.
Structure
The in-line pump consists of a single stage impeller, volute casing, casing cover, shaft, and motor. The impeller and volute casing provide continuous flow without interruption during the pumping operations.
The impeller has adjustable radial blades in a close backed or open backed arrangement. It has a single discharge port and is designed to prevent reverse flow. The radial vane impeller allows for a wide operating range. The volute casing is fabricated from a heavy gauge steel, with wide radial openings for a more efficient operation.
Installation
Vertical in-line pumps are typically used in closed systems such as wastewater, storm water, and chemical treatment applications. They can be readily installed into vertical columns and sump pits, and require minimum maintenance.
For vertical installation, the pump should be mounted so that its axis is vertical, with the motor above the pump and the impeller below. Suitable anchor bolts should also be used to secure the pump and motor. The pump should be piped to the discharge header and the suction inlet with the correct size piping, taking into consideration the pressure and head requirements. All piping should be checked and tested before the pump is placed into service.
Conclusion
Vertical axial in-line pumps are simple, efficient pumps that are used in many industries. They are designed to handle high flows and low head applications, and are capable of providing continuous, reliable operation. Installation of the pump is straightforward, and requires minimal maintenance.
