PRODUCT OUTLINE SLOW Centrifugal Pump of Double-stage and Doublesuction Bisect Volute Type is specially designed and manufactured by our company for using in the occasions which require large flux and high lift, such as iron works, electric power plants and pump station, etc. In combination with advanced design experience of double-stage bisect pump at home and aboard, the products are processed by using special machine tool. This product is applicable for feeding such media as water o o or liquid similarto water at the temperature from -10 C to 80 C PRODUCT CHARACTERISTIC and outlet are all installed in pump body. Just hoist the pump cover when overhaul, greatly facilitating maintenance. Primary-stage double-suction and secondary-stage singlesuction of impeller adopted, greatly improving anti-cavitation performance of pump and decreasing axial dimension of pump. At rotary speed of rpm, avoiding vibration caused by high rotary speed. In comparison with single-stage pump, the products have same performance and smaller impeller diameter and stable operation. The pumping chamber adopts double-volute design, reducing radial force. Applying rolling bearing and lubrication with grease or thin oil and facilitating the maintenance of bearing. Designing in virtue of international advanced hydromechanics software, modeling by using 3DM software, and checking the strength with finite element software, ensuring high efficient, stable and reliable operation of pump. Fully mechanical ensures no leakage within 8000 h, and packing is customizable. The pump turns clockwise, and anticlockwise turning is customizable. This product has applied for national patent (patent number: ZL200520046059.0) 01
ABOUT The MODEL SL OW 250-610 2 2 Two impellers Nominal diameter of impeller Outlet diameter of pump Double-stage and double-suction centrifugal pump Pump Type MAIN PART MATERIAL Part Material Part Material Cast iron HT250 Carbon steel 40Cr Pump body Stainless steel 2Cr13 ZG230-450 HT250 HT200 Pump cover Stainless steel 2Cr13 ZG230-450 Cast iron HT250 Impeller Stainless steel 1Cr18Ni9Ti ZG230-450 denotes general supply, to be supplied as request. 02
SCHEMATIC DRAWING OF PUMP TURNING clockwise normal Clockwise rotation of motor The pump can also be manufactured as per A, B and C turning directions, which shall be specified in contract. Clockwise rotation of motor B A C Anticlockwise turning of motor Anticlockwise turning of motor 03
04 PUMP STRUCTURE DARWING 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Structural diagram 1 (for SLOW150-570 2 and SLOW200-530 2) Pump casing 1 2 Pump cover Secondarystage 4 5 6 7 8 9 10 3 Interstage Primarystage impeller cover sleeve A impeller Water-ed pipe Mechanical Gland of mechanical 11 12 13 14 15 16 17 18 19 Bearing Bearing Bearing body sleeve B Releasing cover Clutch Balancing water pipe
PUMP STRUCTURE DARWING 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Structural diagram 2 (for SLOW250-610 2 ) Secondarystage 1 2 Pump 3 4 5 6 7 8 9 10 pump casing Interstage Primarystage cover impeller cover sleeve A impeller Water-ed pipe Gland of mechanical 11 12 13 14 15 16 17 18 19 Bearing Bearing Mechanical Bearing body sleeve B Releasing cover Clutch Balancing water pipe 05
PERFORMANCE DATA Q H n P (NPSH) r W Pump type 3 (m /h) (L/s) (m) (r/min) (Kw) (%) (m) (Kg) 320 89 228 SLOW150-570 2 450 125 210 400 77 580 161 184 280 78 194 SLOW150-570 2A 400 110 180 315 76 4 1760 520 144 160 240 67 172 SLOW150-570 2B 350 97 160 250 75 460 128 142 600 167 185 SLOW200-530 2 760 211 170 560 78 950 550 264 153 148 178 4.2 2200 SLOW200-530 2A 740 206 160 500 77 900 250 139 900 250 262 SLOW250-610 2 1250 347 240 1120 83 1550 431 206 800 222 228 SLOW250-610 2A 1150 319 210 900 82 1400 750 389 208 180 200 4.4 2800 SLOW250-610 2B 1080 300 180 800 81 1300 361 158 700 194 170 SLOW250-610 2C 1000 278 150 560 80 1200 333 128 06