Many people believe there is no difference between vertical axial flow pumps and regular axial flow pumps, but this is a misconception. Today's editor will delve into the details:

1. Vertical Axial Flow Pump Basic Structure and Function

Water flowing through the intake pool passes through the intake horn tube, where the blades in the impeller chamber force the water to rotate, entering the guide vane body for energy conversion and head generation. It is then discharged through the vertical axial flow pump casing via the discharge elbow. The vertical axial flow pump is connected to both ends of the shaft (rigid). The shaft on the motor bracket bears the overall downward axial force of the rotor. The two ends of the shaft are connected to the motor shaft with a flexible coupling.

The impeller (hub body) of an axial flow vertical axial flow pump features blades. Axial flow vertical axial flow pumps can be adjusted according to the performance parameters of the blades and are categorized into three types:

The fixed-axis axial flow vertical axial flow pump features an integral structure with the impeller (hub) and blades, which are not adjustable.

The semi-processed blade axial flow vertical axial flow pump - the impeller (hub body) and blades are a combined structure. The blades' adjustment angle (e.g., 0°, ±2°, ±4°, ±6°, ±2°) can only be removed when the machine is shut down, and its adjustment angle is stepped.

Full-range adjustable vane axial flow vertical pump – Through a set of adjustment mechanisms (mechanical or hydraulic), the vertical axial flow pump can infinitely adjust the blade placement angle via manual, electric, or computer control methods.

2. Vertical Axial Flow Pump Installation: Inlet Channel and Wet Sump, Dry Sump

Axial-flow vertical axial flow pumps, particularly large-scale vertical axial flow pumps, have stringent requirements for the type and dimensions of the intake water channel, which indirectly affects the performance of vertical axial flow pumps (such as efficiency and cavitation performance). Therefore, formal design (by design institutes) is necessary.

Wet well installation refers to the entire or partial immersion of a vertical axis flow pump in the liquid being pumped, with the pump's partial immersion occurring in the suction sump.

Dry Pit Installation involves the complete air duplication of the vertical axial flow pump, with an elbow-shaped inlet channel leading water into the vertical axial flow pump.