Description
ZD series self-balancing multistage ring section centrifugal water pump is designed to remove the mechanical balance drum, balance disc, balance socket and similar part, but achieve the balancing function by reverse circulation water pipe.
Such external bypass piping is designed for water flowing into the end of the pump from the suction side, and then reversely flow back to the discharge section in the middle, which makes the water flowing from both sides of the discharge section.
It will balance the axial thrust caused by the high pressure impeller from both sides and escape the mechanical wears out as well as overloaded axial force of the traditional multistage pump, and ensure the stability and endurability of the pumpset.
Applications
* boosting in General Industries of chemical process
* boiler water feeding
* Food & beverage
* Sewage Treatment Plant
* Marine & offshore
* Power Plant
* Sea Water Desalination
* Petrochemical processing
* Clear and lightly contaminated liquids
* Commercial water supply, High building water supply
* Mining water discharge
* Supper long distance water transferring
* Handling feed water and condensate in power stations and industrial plants
Design Features:
* With symmetrically arranged impeller rotor components, axial forces generated by all levels of symmetrical impellers forces offset each other and automatic balancing of huge axial thrust within pump cavity can be realized without the balance disc structure.
* Unique throtting and pressure reduction devices, odd-level balancing device.
* By canceling easy-failing balancing disc, pump reliability is greatly improved, maintenance frequency and maintenance cost are reduced.
* No mechanical balancing drum, disc or similar device, which ensure pump could be applied into more wider range of application.
Parameters
| Flow Capacity | 120-180 m3/h | Delivery Head | 285-1100 m |
| Inlet/Outlet Dia. | 150mm/150 mm | Working Pressure | ≤ 16.5 MPa |
| Liquid Temperature | 0 - 120 ℃ | Driven By | Electric Motor / Diesel Engine |
| Seal Type | Mechanical seal / Gland packing | Liquid | Clean water or similar |
| Material of Construction | Cast Iron / Cast Steel / S.S304 / S.S316 / Duplex S.S2205 |
Main Parts Configuration
The pump could transfer different kinds of liquid by customized wet parts, here followed our option of main parts:
* Pump Body: Cast Iron, Ductile Iron, Cast Steel, S.S304, S.S316, Duplex S.S2205
* Shaft: C.S45#, S.S420, 40Cr, 42CrMo, S.S630, Duplex S.S2205
* Shaft Sleeve: C.S45#, S.S420, S.S304, S.S316, S.S630, Duplex S.S2205
* Impeller: Cast Iron, Ductile Iron, Cast Steel, S.S304, S.S316, Duplex S.S2205, Bronze
* Wearing Ring: Cast Iron, Ductile Iron, Cast Steel, S.S304, S.S316, Duplex S.S2205, Bronze
* Bearing: China Make/NSK/SKF/Customized
* Seals: Mechanical Seals/Gland Packing Seals
We offer a variety of service activities:
* Installation & Commissioning of complete mechanical and electrical installations on turnkey basis.
* Repair & Maintenance - incidental service visits on location to breakdown repairs and maintenance on a 24-hour contract basis for products made by Sanchang or by any other manufacturer.
* Original spare parts - we provide stock control of spare parts for groups of pumps (total care maintenance). We are able to respond quickly and flexibly thanks to the availability of our own foundry.
* Training of our worldwide customers in the field of installation, operation and maintenance.
