Spiral shell centrifugal pump

1、 Product Introduction

Spiral shell centrifugal pump is mainly used to transport clean water or liquids with physical and chemical properties similar to water at a temperature not exceeding 105 ℃. Suitable for conveying liquids in water plants, pump stations, power stations, air conditioning circulating water, heating hot water circulation, industrial water supply systems, fire protection systems, ships, oil refining industry (general liquids) and other occasions.

2、 Product Features

1. Compact structure, beautiful appearance, good stability, and easy installation.

2. The double suction impeller with smooth operation and optimized design reduces axial force to a low limit, and has hydraulic performance. The blade shape is precision cast, and the inner surface of the pump casing and impeller surface have significant anti cavitation performance. The mobile pump truck is a self-priming pump truck.

3. SKF and NSK bearings are selected to ensure smooth operation, low noise, and long service life.

4. The shaft seal is selected as BURGMANN mechanical seal or packing seal. Can ensure 8000 hours of operation without leakage.

5. The installation form does not need to be adjusted during assembly, and can be adjusted according to the on-site usage conditions. Separate or horizontal installation.

6. Installing a self-priming device can achieve automatic water suction, without the need for a bottom valve, vacuum pump, or backflow, and the pump can be started.

3、 Technical parameters

Flow rate: 50-15000m3/h

Lift: 8-200m

Speed: 730-2900r/min

Caliber: Φ 80- Φ 1000

Motor power: 4-2500kW

Voltage: 380V, 660V, 6kV, 10kV

Temperature range: ≤ 105 ℃

Work pressure: ≤ 2.5MPa

4、 Product usage

When starting up, the pump with a coupling can remove the connecting part and jog the motor to test the direction of rotation. Alternatively, without disassembling the coupling, test the motor rotation when there is water in the pump. If the electric motor is directly connected to the pump, it is also necessary to ensure that there is water in the pump before testing the steering. It is strictly prohibited to directly start (pump) and test the direction of the electric motor when there is no water in the pump.

Before starting up, the pump must be filled with water. When starting up, open the inlet valve, close the outlet valve, start the motor, and slowly open the outlet valve to the required flow or pressure after the motor runs at normal speed. Attention: Do not allow the pump to run for a long time in the outlet valve that is not open and in the small flow specified by the pump. When the pump is running, it is forbidden to use the inlet valve to regulate the flow, and the inlet valve must be kept at a large opening.

When shutting down, first close the outlet valve, then turn off the motor. If the inlet valve is installed, it should be closed after the motor stops to ensure that there is water intake in the pump (if there is a one-way valve, it can be left open). During the anti freezing period in the north or when the ambient temperature is lower than the freezing temperature of the liquid, the water in the pump must be drained to prevent cracking. If the pump is not used for a long time, the water in the pump must be drained, and if necessary, the pump should be disassembled, parts cleaned for rust prevention, and properly stored.

5、 Product advantages

Not only does it give the pump hydraulic performance, but it also theoretically eliminates the problem of axial force, which is particularly challenging for the operation of large water pumps. The pump body, pump cover, and impeller are precision cast, with a smooth flow surface; Improved the anti cavitation performance and efficiency of the pump.