How much do you know about the working principle and structure of submersible axial flow pump?

The working principle and structure of the submersible axial flow pump can be elaborated as follows:

Working principle

The working principle of submersible axial flow pump is mainly based on the head theory in aerodynamics. When the impeller rotates at a high speed, the liquid particles in the pump body will be affected by the axial lift force from the impeller, making the water flow along the axial direction. To be specific:

The inducer ensures that the pump housing is always full of the liquid to be pumped and that the pump does not lose suction.

The liquid flowing into the pump is accelerated by the impeller blades, and this increased velocity is converted into pressure energy through appropriately shaped outlet channels and diversion pipes.

One end of the impeller is connected to the blade shaft, and the impeller is connected to the intermediate shaft through the blade shaft of the closed pipe, and the intermediate shaft is connected to the drive shaft of the motor in turn.

The coupling transmits the rotation of the motor to the shaft, which in turn turns the impeller, and the thrust bearing bears the actual thrust generated during the transmission process, thus preventing the leakage of fluid from the rotating blade shaft.

Structural characteristics

Submersible axial flow pump mainly includes the following parts:

Centrifugal impeller: the core part, high speed, large load, can convert mechanical energy into kinetic energy of water. Perform a balance test before installation to ensure stability and reliability.

Pump housing: the main part of the pump, which has the function of supporting and fixing, and is connected with the fixed bracket on which the rolling bearing is installed.

Pump shaft: The key component that connects the motor and the centrifugal impeller, transfers the mechanical energy to the water flow by transferring the torque of the motor to the centrifugal impeller.

Rolling bearing: a prefabricated component that supports the pump shaft and is divided into two types: roller bearings and rolling bearings. It is necessary to fill lubricating oil regularly to maintain its good lubrication state.

Seal ring: set in the gap between the centrifugal impeller and the pump body to prevent water leakage or gas into the pump. Proper clearance should be maintained to prevent wear or damage.

In addition, submersible axial flow pumps have the following features:

Vertical pump structure: composed of motor, water pump and shaft seal device three parts, the upper part is the motor, the lower part is the pump, the middle is the shaft seal device.

Automatic coupling device: combined with the fixed shaft to form a fixed structure, making the installation, disassembly and maintenance of the submersible pump more convenient.

Stability: Especially suitable for the occasion of large water level variation, no need to build a pump room, diving into the water can work.

High reliability: overcurrent and overheat protection devices, as well as other special protection devices to ensure the reliability of operation.

In summary, submersible axial flow pumps are widely used in various industrial and agricultural fields through their unique working principle and structural characteristics.