YNKn, YNKD, YNKH, QG series front pump

Overview:

Modern boiler feed water pumps have high rotational speeds and require a high NPSH value.

YNKn, YNKD, YNKH, OG pumps have high suction characteristics, and meet the requirements of the main feed pump suction lift. Pump operating temperature can reach 210°

Performance parameters:

Flow: Q=250~2000mz

Head: H=35~142m

Structure: YNKn.YNKD, YNKH, OG type is a single-stage double-suction horizontal volute pump.

Shaft seal

It adopts mechanical seal or packing seal, and a replaceable shaft sleeve is installed at the shaft seal to protect the pump shaft.

Bearings and balancing devices:

The rotor of the pump is supported by sliding bearings at both ends of the pump shaft. Use thin oil lubrication. The residual axial force is absorbed by the thrust bearing. The axial force of the rotor is balanced by the double suction wheel, and the remaining axial force is borne by the thrust bearing. Transmission: The pump is driven by an electric motor through a diaphragm type coupling. The drive direction, looking at the pump from the drive side, is clockwise.

Material

Pump body, suction cover - chrome steel 1.4008.1/DG230-450

Shaft - high quality carbon steel ST60/45

Shaft sleeve - chrome steel zS15V/3Cr13

Impeller: - Chrome Nickel Steel S14S280

Bearing body - cast iron GG25

Sealing ring-RWA350