High Efficiency Gravel Dredging Mud Sand Pump

Features:
 
1. dredge pump suitable for dredging ship:
The structure of 200BWN-500BWN type pumps are single-casing, single-stage, single-suction, cantilever and horizontal. 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 600BWN-1000BWN type pumps are double-casing, single-stage, single suction, cantilever and horizontal. 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.
 
2. Easy to Disassembly and Installation, Convenient Maintenance:
WN type pump adopts front-disassembly structure in favor of easy disassembly and maintenance. Also it is equipped with special disassembly tools for each different part according to each parts features.
The standard trapezoidal quadruple thread is adopted to connect the impeller and shaft, which not only transmits strong torque but also is easy to disassembly.
 
3. Good Performance on NPSH:
The good NPSH performance of BWN type pump ensures the strong suction ability as well as deeper dredging depth and denser dredging concentration.
 
4. Good Wear-resistant Performance, Long Service Time of Wet Parts:
Wet parts of this kind of dredging pump-impeller, liner and front & back liner plate are adapted anti-wear cast iron alloy whose hardness is more than 58HRC, who has both strong anti-attack feature and higher resistance wear and resistance abrasion features.
 
5. Reliable Shaft Sealing Without Leakage:
The shaft of 200-500BWN dredging pump uses the mechanical sealing or stuffing sealing or mechanical-stuffing compound sealing.
The shaft of 600-1000B WN dredging pump adopts spiral sleeve L (shape) rubber sealing device that consists of three L sealing ring and one special thread shaft sleeve

Structure drawing:


 

Type	Capacity (m 3 /h)	Head (m)	Speed (r/min)	Efficiency (%)	NPSHr(m)	Inlet Dimeter (mm)	Outlet Diameter  (mm)	Max.Diameter of Flowd Parti  (mm)	weight(kg)
200BWND	600~800	20~40	700~900	60~65	<4.5	250	200	178	2500
200BWN	750~1000	40~65	700~850	70~72	<4	250	200	180	3000
250BWND	950~1100	20~40	500~700	65~70	<4	300	250	220	3000
250BWN	1100~1300	40~65	500~650	70~74	<4	350	250	144	3513
300BWND	1500~1800	20~40	400~600	65~68	<4	350	300	241	6000
300BWN	1800~2200	40~65	400~550	74~78	<4	450	300	241	7000
350BWN	2600~3000	40~65	400~550	74~78	<4.5	450	350	245	7300
400BWN	2800~3200	20~40	400~550	74~78	<4.5	450	400	250	7500
450BWN	3200~3850	40~67	350~500	76~80	<4.5	600	450	254	7850
500BWNQ	3600~4200	20~40	220~320	72~75	<4.8	600	500	330	8000
500BWN	4500~5500	40~65	350~450	78~80	<4.8	650	500	250	11300
600BWN	7000	62	470	80	<6	700	600	220	30000
600BWNQ	7000	30	380	83	<6	700	600	220	16000
700BWN	10000	85	380	85	<6	760	700	280	45000
700BWNQ	10000	28	280	85	<6	760	700	280	21000
800BWN	12500	59	349	81	<6	800	750	300	40000
800BWNQ	12500	32	258	81	<6	800	750	300	23000
800BWND	12500	32	258	81	<6	800	750	300	23000
850BWN	14400	70	330	85	<6	900	850	320	65000
900BWN	16000	30	175	85	<6	1000	900	340	80000
1000BWN	16000~25000	23~76	181~290	85~87	<6	1200	1000	350	121000