Semi-adjustable Vertical type Cast iron Replace Sulzer Axial Flow Pump

Cast iron Replace Sulzer Axial Flow Pump Working principle

The working principle of axial flow pump is different from that of centrifugal pump. It mainly uses the thrust generated by the high-speed rotation of the impeller to lift water. The lift generated by the rotation of the axial flow pump blades can push the water from the bottom to the top.

The blades of the axial flow pump are generally immersed in the pool of water source. Due to the high-speed rotation of the impeller, the lift generated by the blades continuously pushes the water upward and causes the water to flow out along the outlet pipe. As the impeller rotates continuously, the water is continuously pressed to a high place.

Cast iron Replace Sulzer Axial Flow Pump Design Features

(1) The direction of water flowing through the axial flow pump is along the axial direction of the impeller, and the axial direction flows out, so it is called an axial flow pump.

(2) Low head (1 to 13 meters), large flow rate, high efficiency, suitable for irrigation and drainage in plains, lakes, and rivers.

(3) No need to fill water before starting, simple operation.

Cast iron Replace Sulzer Axial Flow Pump Advantage

① Simple structure, under given working parameters, the cross-sectional area (plane perpendicular to the rotating shaft) and weight are smaller than other types of vane pumps; ② Whether in the shutdown state or the running state, the flow rate can be easily changed by changing the blade placement angle; ③ Axial flow pumps are usually vertical structures, so they occupy a small area, and can also be installed outdoors.

Cast iron Replace Sulzer Axial Flow Pump Specification

Cast iron Replace Sulzer Axial Flow Pump Production workshop

Cast iron Replace Sulzer Axial Flow Pump RFQ

1. How efficient are axial flow pumps?

Yes, axial flow pumps are known for their high efficiency, and can move large amounts of fluid with relatively low energy consumption. Their design minimizes energy losses and maximizes hydraulic efficiency, especially when close to the best efficiency point (BEP).

Of course, correct sizing, selection, and maintenance are essential to achieving high efficiency. When the equipment is first specified, operating conditions and system design must be considered to improve efficiency.

2. How do axial flow pumps differ from other pump types?

Axial flow pumps work differently from other types of pumps, such as centrifugal pumps, and do not waste energy when changing the direction of fluid flow, thereby improving efficiency. All pumps convert mechanical/electrical energy into fluid kinetic energy, which manifests as velocity or pressure head. However, the machine form changes the nature of these conversions.

The fluid moves parallel to the pump shaft, and the impeller blades impart axial velocity to the fluid, rather than requiring forceful rotation as in centrifugal pumps. In most centrifugal pumps, the fluid moves radially from the center of the impeller to the outside, generating centrifugal force. The fluid enters the pump axially and exits radially, making a turbulent and energy-consuming 90° turn.

Axial flow pumps are designed to achieve high flow rates at relatively low heads, delivering large volumes of fluid with minimal pressure increase. Centrifugal pumps are typically suitable for a wide range of flow rates and heads, depending on the specific design and impeller configuration. Centrifugal pumps can handle moderate to high flow rates and have higher output pressures than typical axial flow pumps.

Axial flow pumps are typically used for high flow rates and low heads. Centrifugal pumps are more versatile and can be used in applications that require a balance between flow and delivery pressure.

3. Can axial flow pumps run dry?

No, the working fluid is usually used as a coolant, and the lack of coolant can cause bearings and seals to overheat quickly. Dry operation accelerates the wear of pump components, especially impellers and bearings, due to increased friction and heat buildup. In many cases, the working fluid is an effective lubricant for the seals, and the lack of working fluid can cause serious damage to the seals. In some cases, semi-dry operation can induce cavitation, which is the formation of bubbles within the pump due to low pressure conditions. Cavitation can cause corrosion of pump components and reduce the efficiency of the pump. Pumps increase energy consumption when running dry because the pump motor will run but will not generate flow.

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