Centrifugal Slurry Pump: Warman G sand and gravel 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

003: Base 005: Bearing Assembly 132: Intake Joint Discharge Joint 130: Discharge Flange Intake Flange 013: Cover Plate	131: Bowl 137: Impeller 041: Back Liner 135: Door Clamp Ring 134: Adapter Plate Clamp Ring 124: Volute Cover Seal

003: Base
005: Bearing Assembly
132: Intake Joint
Discharge Joint
130: Discharge Flange
Intake Flange
013: Cover Plate

131: Bowl
137: Impeller
041: Back Liner
135: Door Clamp Ring
134: Adapter Plate Clamp Ring
124: Volute Cover Seal

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	Flow (m3/h)	Head (m)	Speed (r/min)	Efficiency (%)	Motor (kw)	Drive type
6/4 D-G	187-36	7-51	1400-600	30-58	52-3	CV.CR.DC
8/6 E-G	576-133	10-48	1400-800	60-54	88-11	CV.CR.DC
10/8 F-G	930-216	11-44	940-500	65-34	147-22	CR.DC
12/10 G-G	1512-360	11-58	850-400	70-50	305-24	CR.DC
14/12 G-G	3168-522	9.5-66	700-300	68-60	643-29	CR.DC
16/14 TU-G	3024-900	14-45	500-300	70-50	459-78	CR.DC
8/6 F-G	648-126	15-77	1050-500	71-50	177-12	CR.DC
10/8 F-G	1091-324	19.2-56.5	800-500	72-60	205-32.4	CR.DC
12/10 G-G	2232-612	28-77	700-450	73-60	558-89	CR.DC