What are the advantages and disadvantages of direct coupling type and coupling type for horizontal centrifugal pump?

Q: What are the advantages and disadvantages of direct coupling type and coupling type for horizontal centrifugal pump?

A:The advantages of the direct-connected horizontal centrifugal pump: the direct-connected horizontal centrifugal pump has a compact structure, a small footprint, and the concentricity of the motor shaft and the pump shaft does not need to be adjusted during installation because the motor shaft is lengthened.

The disadvantages of the direct-connected type of horizontal centrifugal pump: the direct-connected horizontal centrifugal pump has higher quality requirements for the motor because the pump has no bearing and relies on the bearing load of the motor. If the pump shaft is worn and cannot be repaired, the entire motor rotor needs to be replaced, and the maintenance cost is high.

The advantages of the coupling type of horizontal centrifugal pump: the horizontal centrifugal pump with the coupling type is generally equipped with a base, which runs more smoothly; If the pump shaft is worn, replace the pump shaft, and the maintenance cost is low.

The disadvantages of the coupling type of horizontal centrifugal pump: the floor area is large, the noise is large, the installation needs to carefully adjust the concentricity of the pump shaft and the motor shaft, and the buffer glue in the coupling is easy to damage, which is more than the direct type of wearing parts.