Performance range

Specification dn: 40 ～ 200mm

Flow q: ~ 800m3/h

Lift h: ~ 800m

Working pressure p: ~ 10MPa

Working temperature t: -20 ℃ ~ 120 ℃

Speed n:1470 or 2950r/min

Structural features

1. Pump body and support pipe

The VMC is a multi-stage submerged pump structure. The pump body is installed in the liquid of the medium tank. The installation depth of the pump body is determined by the NPSH of the device and the NPSH of the pump, which can ensure that the pump will not suffer from cavitation in a relatively harsh environment.

The structure of the support pipe shall meet the requirements of the medium delivered by the pump. An intermediate guide bearing is installed between the two support pipes. The span between the guide bearings meets the requirements of API610 standard to ensure that the allowable continuous speed is lower than the first critical speed. The rigid shaft design ensures that the pump operates smoothly and has little vibration to a greater extent.

2. Impeller and guide vane

The first stage impeller is generally a suction impeller, which can improve the cavitation performance of the pump.

Each specification has corresponding groups of impellers and guide vanes, which are suitable for different operation requirements, with stable performance, high efficiency and low NPSHr value.

3. Bearing body and lubrication

The paired angular contact ball bearing is used to bear the residual axial force and rotor weight.

The large oil storage chamber of the bearing box is equipped with an independent internal circulation automatic lubrication system, which can not only effectively lubricate the bearing, but also make the bearing oil temperature uniform, ensuring the long life of the bearing.

When the temperature of the conveying medium is high, the cooling device can be used to reduce the temperature of the oil chamber.

The oil chamber is designed with large capacity and large oil storage capacity.

The constant position oil cup compensates the lubricating oil online, and the oil level gauge detects the oil level in real time.

The bearing parts can be disassembled and assembled as a whole, which is convenient for maintenance.

4. Balancing device

Use the balance drum device to balance the axial force

The pressure in the mechanical seal chamber can be reduced by connecting the pipe with the rear end of the balance drum.