Type OWH

Qmax=500m3/h – Hmax=1000m 

APPLICATION

The OWH type pumps are designed for deepest mine dewatering. The heads are up to 1000 meters.The robust design of OWH pumps is adequate for adverse operating conditions typical for mine dewatering.The pumps are designed to stand increased external loads and the presence of mechanical and chemical contaminations in the mine water.

For the sake of those design features the OWH pumps, beside the basic application in deep mine dewatering are also applicable in other industries, where there is a need for pumping contaminated fluids, such as:

steel industry
cement and lime plants
open cast mines.

DESIGN

OWH are horizontal, stationary, multistage, ring-section pumps.The delivery flange is directed vertically upward and the suction flange is directed horizontally, left or right according to the needs. Closed impellers and vane diffusers are applied. The axial thrust is absorber by a balance disk. Two alternative kinds of bearing can be applied: oil lubricated slide bearings or grease lubricated roller bearings. The shat seal can be sealed by a gland or mechanical seal.

The suction casing is designed to stand suction head up to 200 m. For that reason the OWH pump are able to operate in series with a booster pump to achieve a total head of 1200 m.

The drive for the highest heads is double-sided (two motors per pumps).

MATERIALS OF CONSTRUCTION

The materials of construction for the OWH pumps are selected accordingly to the handled fluid. There are two standard material versions:

wear-resistant – for water containing solids
salt-resistant – for chemically contaminated water with solids presence.

Special material versions can be selected for handling non-typical fluids.




No.

Part name

No.

Part name

No.

Part name

1 Shaft 15 Discharge casing 29 Shaft protecting sleeve
2 Bearing cap 16 Discharge casing plate 30 Seal ring
3 Oil chamber cover 17 Distant 31 Sealing sleeve
4 Stuffing box guard 18 Sliding ring 32 Distance sleeve
5 Shaft nut 19 Balance disc 33 Shaft sleeve
6 Packing 20 Balance device casing 34 Discharge casing sleeve
7 Suction casing 21 Shaft nut 35 Thrust ring
8 Suction casing plate 22 Bearing cap 36 Limiter
9 1st stage impeller 23 Bearing cap 37 Stuffing box casing
10 Impeller 24 Shaft shift indicator 38 Shaft protecting sleeve
11 Stage casing 25 Split acetabulum 39 Split Gland
12 Centrifugal guide 26 Bearing casing 40 Deflector
13 Supply guide 27 Lantern ring 41 Lubricating ring
14 Tie bolt 28 Suction casing sleeve 42 Sliding cover


Dimension [mm]

Pump type

OWH-200

OWH-250

OWH-250S

L Number
of stages
3 2058 2538
4 2213 2703
5 2368 2868
6 2523 3033 3154
7 2678 3362* 3483*
8 2833 3527* 3648*
9 2988 3692* 3813*
10 3143 3857* 3978*
11 3298
a Number
of stages
3 595 685
4 750 850
5 905 1015
6 1060 1180 1220
7 1215 1345 1385
8 1370 1510 1550
9 1525 1675 1715
10 1680 1840 1880
11 1835

Dimensions marked (*) pertain to design with dual drive.

Pump type

OWH-200

OWH-250

OWH-250S

Dimensions
[mm]
W 1180 1195 1220
k 650 597 680
H 1170 1330 1330
h 530 600 600
Ds 250 / 200* 250 300
Dt 200 250 250

(*) applies to pump version with either suction work or work in series with influx.



Pump type

Number of stages

Capacity
Q [m3/h]

Head
H [m]

Rotation speed
n [rpm]

Shaft power
P [kW]

Weight
m [kg]

OWH-200 3 315 240 1450 295 3633
4 320 393 3928
5 400 491 4223
6 480 589 4518
7 560 687 4813
8 640 785 5108
9 720 883 5403
10 800 981 5698
11 880 1080 5993
OWH-250 3 500 300 1450 544 5258
4 400 726 5864
5 500 908 6470
6 600 1090 7076
7 700 1272 7682
8 800 1453 8288
9 900 1635* 8918
10 1000 1817* 9524
OWH-250S 6  500 600 1450 1090 5612
7 700 1272* 6091
8 800 1453* 6550
9 900 1635* 7009
10 1000 1817* 7468