Multi-Stage Centrifugal Pump popular and promotion in Middle East

Performance Range:
Capacity: 6.3~600m³ /h
Head: 22.8~650m
Medium temperature: 0º C~+80º C
Inlet pressure≤ 0.6MPa

Application:
1. Pumping water or liquids similar to water in physical and chemical properties.
2. Applied in mine, firefighting, boiler feeding and city water supply and drainage industry.
3. By adopting highly efficient hydraulic model recommended by our state, these kinds of pump have advantages like high efficiency and energy saving, wide performance range, steady operation, low noise, long operation life and convenient in installation and maintenance etc.

Construction feature:
Type D (DG, MD, DF, DY) pump consists of stator, rotator, bearing and shaft seal:
1. Stator: Main parts is suction casing, stage casing, discharge casing and diffuser, they are screw up by poles to become a working chamber. The suction direction of type D pump is horizontal, its discharge direction is upward; The discharge direction of type MD, DF, DY pumps are upward, the suction direction is horizontal, they can be made upward according to users' requirement.

2. Rotor: It consists of shaft, impeller, balance disc, and shaft sleeve etc. Shaft deliver energy to impeller. The axial force is balanced by disc. The shaft sleeve is mounted on shaft to protect shaft.

3. Bearing parts: It consists of bearing body, bearing and bearing cover etc. The bearing of type 85-67, 155-67, 600-60 pump is sliding bearing, lubricated by dilute oil, the other pump bearing is rolling bearing, lubricated by grease.

4. Shaft seal: Usually by soft packing seal, it consists of inlet section, sealing material on tail-hood, stuffing and washer. The seal chamber have some pressure water to cool., lubricate and seal the pump. Type D pump high-pressure water come from pump itself, type DG, MD, DF, DY pump pressure water comes from pump itself or external supply, type DG, MD, DF, DY pump usually adopt mechanical seal.

5. The pump is driven directly by motor through flexible coupling.

6. View from motor side, the rotating direction of pump is clockwise.