Type OW

Qmax=720m3/h – Hmax=700m

APPLICATION

The OW-AM and OW-B type pumps are designed for deep mine dewatering. The parameters cover the range required in this application: capacities of hundreds cubic meters per hour and heads up to 800 meters. The robust design of OW-AM and OW-B 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 OW-AM and OW-B 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

OW-AM and OW- 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 blade diffusers are applied. The axial thrust is absorber by a balance disk. Two alternative kinds of bearings can be applied: oil lubricated slide bearings or grease lubricated roller bearings. The shat seal can be sealed by a gland or mechanical seal.

MATERIALS OF CONSTRUCTION

The materials of construction for the OW-AM and OW-B pumps are selected accordingly to the handled fluid. There are three standard material versions:

basic – for water containing no contaminations
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	Bearing cap	14	Distant	27	Seal ring
2	Oil chamber cover	15	Balance disc	28	Sealing sleeve
3	Bearing cap	16	Relieving system body	29	Distant sleeve
4	Shaft nut	17	Bearing housing	30	Tie bolt
5	Lantern ring	18	Stuffing box guard	31	Shaft sleeve
6	Suction casing	19	Bearing bush	32	Discharge casing sleeve
7	Suction casing plate	20	Shaft	33	Thrust ring
8	Centrifugal guide	21	Oil cooling system	34	Sliding ring
9	Supply guide	22	Deflector	35	Discharge gland bush
10	Impeller	23	Gland	36	Shaft nut
11	Stage casing	24	Gland packing	37	Bearing cap
12	Discharge casing	25	Shaft protecting sleeve	38	Shaft shift indicator
13	Discharge casing plate	26	1st stage seal ring

Dimensions [mm]	Pump type		OW-100B	OW-150AM	OW-200AM	OW-250B	OW-250F	OW-300AM
L	Number of stages	3	1341	1424	1913	2065	2110	2151
		4	1426	1513	2051	2220	2265	2337
		5	1511	1602	2189	2375	2420	2523
		6	1596	1691	2327	2530	2575	2709
		7	1681	1780	2465	2685	2730	2895/3108*
		8	1766	1869	2603	2840	2885	3081/3294*
		9	1851	1958	2741	2995	3040	3480*
		10	1936	2047	2879	3150	3195	3666*
		11	–	2136	3017	3305	–	–
a	Number of stages	3	311	375	507	593	593	659
		4	396	464	645	748	748	845
		5	481	553	783	903	903	1031
		6	568	642	921	1058	1058	1217
		7	651	731	1059	1213	1213	1403
		8	736	820	1197	1368	1368	1589
		9	821	909	1335	1523	1523	1775
		10	906	998	1473	1678	1678	1961
		11	–	1087	1611	1833	–	–

Dimension marked [*] apply to two-sided drive.

Pump type		OW-100B	OW-150AM	OW-200AM	OW-250B	OW-250F	OW-300AM
Dimensions [mm]	W	619	653	1060	1158	1158	1273
	k	350	380	600	650	650	750
	H	605	605	1000	1170	1170	1200
	h	265	265	450	530	530	560
	Ds	150	200	250	300	300	350
	Dt	100	150	200	250	250	300

Pump type	Number of stages	Capacity Q [m³/h]	Head H [m]	Rotation speed n [rpm]	Shaft power P [kW]	Weight m [kg]
OW-100B	3	100	198	2950	82,5	524
	4		264		110	577
	5		330		137,5	630
	6		396		165	683
	7		462		192,5	736
	8		528		220	789
	9		594		247,5	842
	10		660		275	895
OW-150AM	3	160	204	2950	126	550
	4		272		168	605
	5		340		210	660
	6		408		252	715
	7		476		294	770
	8		544		336	825
	9		612		378	880
	10		680		420	935
	11		748		462	990
OW-200AM	3	300	180	1450	210	2124
	4		240		280	2314
	5		300		350	2504
	6		360		420	2694
	7		420		490	2884
	8		480		560	3074
	9		540		630	3264
	10		600		700	3454
	11		660		770	3644
OW-250B	3	500	210	1450	381	2985
	4		280		508	3271
	5		350		635	3556
	6		420		762	3842
	7		490		889	4126
	8		560		1016	4412
	9		630		1143	4697
	10		700		1270	4982
	11		770		1397	5267
OW-250F	3	600	210	1485	440	3075
	4		280		587	3373
	5		350		733	3691
	6		420		880	4000
	7		490		1027	4308
	8		560		1174	4616
	9		630		1320	4924
	10		700		1467	5232
OW-300AM	3	720	210	1450	528	3005
	4		280		704	3345
	5		350		880	3685
	6		420		1056	4025
	7		490		1232	4365/4382*
	8		560		1408	4705/4722*
	9		630		1584	5062*
	10		700		1760	5402*

The parameters are specified for clean water of density ρ=1000 kg/m3 and temperature T=15°C.
Dimensions marked (*) petain to design with dual drive.