Centrifugal Slurry Pump: Heavy duty river sand dredging pump

1. What is a sand pump?

WS(G) series sand dredging pump is a new type of single-stage single-suction cantilever horizontal centrifugal sludge pump researched & manufactured by our company, aiming at dredging and damming of the river and seas.

Strongly wear-resistant casting alloy iron, whose hardness is not less than 58HRC adoped for the casting, impeller, front liner and rear liner of wet parts. It throughout meets requirements of the dredge to dredging pumps.

2. What advantage of WS(G) sand pump?

WS(G) pump is designed specifically with advantages of light weight, good wear-resistant, super dredging performance, perfectly suited for the dredge onl the wholeconstruction, high multiple economy benefits.

1	Large drdging depth, high density of dredging mud, good NPSH and stronger suction lift ability
2	Strong through-put. The pump can persistently discharge gravel, high plastic soil lump and so on
3	The pump can be directly matched with either motor or diesel engine
4	Wide application. It can be used in various kinds of soil quality.
5	Little hydraulic loss, high efficiency and low oil-consumption
6	Little volume, light weight
7	Steady operating, little vibration, low noise
8	Simple & reliable construction, easily disassembly & assembly, convenient maintaining
9	Reliable sealing without leakage
10	Long operation life of parts, high reliability of whole set, long MTBF
11	Obvious economic efficiency and energy-saving

3. What structure of WS(G) sand pump

The structure of 200WS-500WS type pumps are single-casing, which uses the mechanical sealing or stuffing sealing or mechanical stuffing compound sealing. According to the connection with the gear box, two structures can be offered: self-carrying bracket and pump-box assembly. The lubrication for the bracket is grease or thin oil.

The structure of 600WSG-1000WSG type pumps are double-casing, which adopts spiral sleeve L (shape) rubber sealing device that consists of three L sealing ring and one special thread shaft sleeve. It has self-carrying bracket. Lubrication is forced thin oil lubricating. The double-casing design can ensure the liner can work till it is worn out, and if the liner crack, water can not enter into the pump.

4. Sand pump construction drawing

5.Main part number at the drawing

1: Shaft 2: Frame 3: Mechanical Seal Assembly 4: Connecting Plate 5: Rear Liner	6: Pump Casing 7: Cover Plate 8: Front Liner 9: Impeller 10: Support

1: Shaft
2: Frame
3: Mechanical Seal Assembly
4: Connecting Plate
5: Rear Liner

6: Pump Casing
7: Cover Plate
8: Front Liner
9: Impeller
10: Support

6. Materials of construction

	VOLUTE	IMPELLERS	BASE	EXPELLER	EXPELLER RING	SHAFT SLEEVE	SEALS
Standard	High Chrome Alloy	High Chrome Alloy	Cast Iron	High Chrome Alloy or SG Iron	High Chrome Alloy or SG Iron	SG Iron	Natural Rubber
Options	SG Iron	SG Iron	Mild Steel Fabricated	SG Iron	SG Iron	EN56C Ferralium Hasteloy C Ceramic Stellite Chrome Oxide	Nordel Neoprene Viton Butyl EPDM

7. sand pump selection chart

( Note: Approximate performance for clear water,to be used for primary selection only.)

8. Pump performance parameters

Model	Capacity m³/hr	Head m	Impeller Speed /rpm	Efficiency /%	Inlet Diameter /mm	Outlet Diameter /mm	NPHr	Max Flowed Particle/mm		Pump Weight / ton
Model	Capacity m³/hr	Head m	Impeller Speed /rpm	Efficiency /%	Inlet Diameter /mm	Outlet Diameter /mm	m	Five Pieces	Three Pieces	Pump Weight / ton
100WS	180-250	25-45	1000-1400	50-58	150	100	3.5	50	82	0.5
150WS	250-550	20-40	1200-1400	58-60	200	150	4	76	127	1.1
150WSG	350-700	40-65	800-980	68-71	200	150	3.5	84	140	1.9
200WS	550-1000	20-45	700-980	60-65	250	200	4.5	105	178	2.3
200WSG	550-1000	40-65	700-850	70-72	250	200	4	108	180	3.2
250WS	700-1100	20-45	500-750	65-70	300	250	4	132	220	4.5
250WSG	900-1500	40-60	500-650	70-74	350	250	4.5	86	144	4.6
300WS	1100-1800	20-40	400-600	65-68	350	300	4.5	144	241	5.5
300WSG	1500-2200	30-65	400-550	74-78	450	300	4	144	241	8
350WSG	2000-3000	40-65	400-550	74-78	450	350	4	147	245	8.8
450WSG	3000-4000	35-67	350-500	76-80	600	450	4.5	125	254	12
500WSG	4000-5500	40-65	350-450	78-80	650	500	4.8	150	250	17
600WSG	5000-9000	55-80	320-400	81-85	650	600	6	160	220	35
700WSG	8000-12000	60-85	280-380	83-85	750	700	6	180	280	50
800WSG	10000-15000	50-70	260-360	79-80	850	800	6	200	300	58
900WSG	12000-19000	50-75	280-330	83-85	950	900	6	210	320	85
1000WSG	16000-25000	23-76	180-290	85-87	1100	1000	6	230	350	126