SLOW CENTRIFUGAL PUMP OF DOUBLE-STAGE AND DOUBLE-SUCTION BISECT VOLUTE TYPE

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2 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: ZL ) 01

3 ABOUT The MODEL SL OW 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 ZG HT250 HT200 Pump cover Stainless steel 2Cr13 ZG Cast iron HT250 Impeller Stainless steel 1Cr18Ni9Ti ZG denotes general supply, to be supplied as request. 02

4 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

5 04 PUMP STRUCTURE DARWING Structural diagram 1 (for SLOW and SLOW ) Pump casing 1 2 Pump cover Secondarystage Interstage Primarystage impeller cover sleeve A impeller Water-ed pipe Mechanical Gland of mechanical Bearing Bearing Bearing body sleeve B Releasing cover Clutch Balancing water pipe

6 PUMP STRUCTURE DARWING Structural diagram 2 (for SLOW ) Secondarystage 1 2 Pump pump casing Interstage Primarystage cover impeller cover sleeve A impeller Water-ed pipe Gland of mechanical Bearing Bearing Mechanical Bearing body sleeve B Releasing cover Clutch Balancing water pipe 05

7 PERFORMANCE DATA Q H n P (NPSH) r W Pump type 3 (m /h) (L/s) (m) (r/min) (Kw) (%) (m) (Kg) SLOW SLOW A SLOW B SLOW SLOW A SLOW SLOW A SLOW B SLOW C