Split volute casing double suction pump
COS series split volute casing double suction pumps have wider performance range, excellent hydraulic model, reasonable and reliable structure, fast and easy operation and maintenance
■Flow rate: Q=20~12000m3/h
■Total head: H=9~105m
■S.g.: γ ≤1.15
■The installation of COS series pump can be horizontal and vertical, and for the horizontal one, the driver can be in the left and right according to the user’s requires.
■The flange hole can according to the GB, ISO, DIN, or ASI standard.
■The two sides of horizontal one can adopt the grease lubrication bearing and the dilute oil lubrication, the down side is SIC wear resistant sliding bearing.
■According to the user’s need, the pump rotating direction can be the clockwise or counterclockwise.
■Single stage,double suction,axial split casing centrifugal pump.Double passage casing to reduce the axial forces.
■Both pump inlet and outlet are beneath the pump centerline,the rotary part can be removed from the casing without dismantle the pipelines.
■Shortened shaft and enlarged diameter of shaft design to increase the life of bearings and mechanical seals.
■Completely sealed shaft design, zero contact with fluids.
■Various materials of shaft sleeve to prevent the shaft from abrasion and corrosion.
■Both mechanical seal and packing seal are available;mechanical seal can be changed without dismantle the pump cover.
■Different rotation directions are available.
Structure drawing is as below:
1. Construction section of type COS pump
1. Pump casing
3. Pump cover
4. Flushing water piping
5. Seal ring
6. Pipe plug
7. O ring
8. Seal housing
9. Packing gland
10. Block water ring
11. Bearing gland
12. Bearing housing
14. Skeleton oil seal
16. Bearing block ring
18. Shaft sleeve
2. Construction section of type COS (L) pump
1. Pump casing
2. Pump cover
6. Seal ring
7. Shaft sleeve
8. Vent plug
9. Seal housing
10. Flushing water piping
11. Packing gland
12. Bearing cover
13. Bearing housing
14. Bearing block
15. Bearing block ring
17. Skeleton oil seal
19. Motor stool
20. Mechanical seal or packing
|Anti-corrosion alloy||Cast steel||Stainless steel|
|China standard||ASTM standard|
Carbon steel SS420 2205 SS304 SS316
|Item||Factory standard||Optional configurations|
|Motor||Reputed China brands||ABB, Siemens, Nanyany, Jiamusi or designated brands|
|Bearing||Reputed China brand||SKF, NSF, FAG or designated brands|
|Flanges&counter flanges||China standard||European std, German std, American std, Japanese std|
|Couplings||Pin type||Flexible diaphragm coupling|
■ Water supply and water treatment
■ Water irrigation and sewage disposal
■ Paper making industry: COS series pump improved the fluid model based on the traditional double suction pump, while ensuring high efficiency, its capacity and flow are stable; giving attention to the low pulse conveying requirement, the pump can be used with middle or high speed paper making machine to convey pulp with consistency below 1%
■ Power plants, thermal power plants and pipeline networks
■ Fire protection systems
■ Seawater salts production
■ Industrial process