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| Email: | info@sanchangpump.net |
| Hotline： | +86 181 4266 2779 |
| +86 193 1300 1794 | |
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+86 181 4266 2779 |
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+86 181 4266 2779 |
| Address： | No.517,Xiangfu Road |
| Yuhua District, | |
| Changsha City | |
| Hunan Province, P.R.C |
DFP Type Self-balancing Salt Mine Brine Pump
Classification:
Multistage Centrifugal Pump
Salt Chemical Industry
Petrochemical Industry
Energy-saving Renovation
Key words:
Brine Pump
Salt Mine Brine Pump
Self-balancing Centrifugal Pump
Hotline:
- Product Description
- Performance Parameter
- Installation Drawings
- Installation And Use
- Faults And Solutions
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- Commodity name: DFP Type Self-balancing Salt Mine Brine Pump
Flow Range: 3.75~1400 m3/h</br> Head Range: 50~2000m</br> Fluid Temperature: 0 ℃ ~ 80 ℃</br> Allowable Inlet Pressure: 0.6MPa</br> Shaft Seal: packing seal, mechanical seal</br> Available Materials: HT200, HT250, QT600, ZG, 304, 316, 316L, 317L, 904L, CD4-MCu, etc</br></br></br></br>
Product Description
This equipment is applied to water injection in brine wells of brine extraction and transmission systems. The conveyed medium is salt-making wastewater containing salts such as NaCl, Na₂SO₄ and CaSO₄. The medium is generally at ambient temperature, not exceeding 50°C.
Product Overview
The DFP type self-balancing salt mine brine pump features excellent corrosion resistance and is suitable for transporting corrosive media. Developed and manufactured in compliance with API610 standard, this self-balancing stainless steel multistage pump adopts a symmetrical rotor self-balancing structure, delivering better operational stability and higher efficiency than conventional sectional multistage pumps.
It boasts a wide high-efficiency range, broad performance coverage, superior cavitation resistance, safe and stable operation, low noise, fewer wearing parts and convenient installation and maintenance.
Structural Description
The DFP type self-balancing salt mine brine pump requires no balancing device. It eliminates disc friction loss of balance discs and backflow loss of balance water, raising the pump efficiency by 5~14% compared with similar multistage pumps.
Without friction on the balance disc, the shaft power is reduced, achieving obvious energy saving. Its power consumption is about 3% lower than that of ordinary multistage pumps. In addition, it thoroughly avoids faults like wear of balance discs and balance rings or rotor seizure caused by failure of balancing devices, effectively extending the service life of the pump. Its mean time between failures is over three times that of ordinary pumps, which greatly cuts down maintenance cost and life cycle cost.
Application
For conveying solid-particle-free corrosive liquids with temperature ranging from -20℃ to 105℃.
Model Description
Example: DF（P）46 - 50 X 8
DF(P) -- Horizontal self-balancing single-suction stainless steel multistage centrifugal pump
46 -- Design flow: 46 m³/h
50 -- Design head: 50 m
8 -- Number of stages: 8
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Flow Range: 3.75~1400 m3/h
Head Range: 50~2000m
Fluid Temperature: 0 ℃ ~ 80 ℃
Allowable Inlet Pressure: 0.6MPa
Shaft Seal: packing seal, mechanical seal
Available Materials: HT200, HT250, QT600, ZG, 304, 316, 316L, 317L, 904L, CD4-MCu, etc
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Outline Installation Drawing of DFP Type Self-balancing Salt Mine Brine Pump
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Installation, Start-up, Operation and Shutdown Instructions for DFP Type Self-balancing Salt Mine Brine Pump
In addition to complying with general installation technical requirements, please observe the following points during installation:
1. When assembling the motor and pump, pull the shaft at the pump coupling end outward and reserve an end clearance of 2–3 mm to ensure the required axial gap between the two couplings.
Note: Complete base leveling and ensure good horizontal alignment before grouting. Correct coupling alignment is critical for successful installation. Flexible couplings cannot compensate for significant misalignment, which will lead to rapid wear, noise, vibration and equipment damage. Adjust the coupling within the specified tolerance range. Effective supports shall be installed for the pump suction and discharge pipelines to avoid excessive pipeline loads acting on the pump.
2. The centerlines of the self-balancing horizontal multistage pump and the motor shall be aligned on the same horizontal line.
3. The self-balancing horizontal multistage pump can only bear its own internal forces and shall not be subjected to any external loads.
Start-up
Warning: For personal and equipment safety, do not operate the pump beyond the parameters specified on the nameplate. Follow this manual for all operation and maintenance work.
1. Turn the rotor manually before start-up to check for flexible rotation.
2. Verify that the motor rotation direction matches that of the pump.
3. Close the discharge gate valve and pressure gauge cock. Vent air from the pipelines and pump casing using the conveyed medium or vacuum system. Dry running is strictly prohibited.
4. Check the tightness of coupling bolts and the surrounding safety conditions, and get the pump ready for start-up.
5. Start the pump. After stable operation, open the pressure gauge cock and slowly open the discharge gate valve. Regulate the pump head according to the reading of the discharge pressure gauge.
Operation
1. The axial thrust is balanced by the internal self-balancing structure. Balanced liquid drains from the balancing assembly and flows back to the suction section via the balance pipe.
2. Rolling bearings of the pump are equipped with cooling systems. Connect the cooling water pipes before operation. Bearing temperature rise reflects assembly quality: the temperature rise shall not exceed 35 ℃ above ambient temperature, and the maximum bearing temperature shall not exceed 75 ℃.
Note: Operation with insufficient lubrication will cause bearing overheating, fracture, pump seizure and equipment damage, and may result in personal injury.
3. The rotor has a certain axial float during operation. Always maintain the designed end clearance between the pump coupling and motor coupling.
4. Regularly inspect the wear of impellers, wear rings, guide vane sleeves, balance discs and shaft sleeves during operation. Replace components promptly when excessive wear occurs.
5. Formulate detailed operating procedures according to actual working conditions.
Shutdown
Close the pressure gauge cock first, then slowly shut down the discharge gate valve. Stop the motor only after the discharge gate valve is fully closed.
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Pump fails to start or starts with excessive load
Causes: Power supply disconnected, motor malfunction, loose or damaged impeller, circuit board failure, etc.
Solutions: Check power connections; replace the motor, impeller or circuit board as required.
Insufficient or no flow rate
Causes: Worn or blocked impellers/guide vanes, worn or clogged wear rings, insufficient motor speed, etc.
Solutions: Replace impellers or guide vanes, clear blockages, renew wear rings, inspect the motor and adjust its speed accordingly.
Insufficient or no head
Causes: Worn or blocked impellers/guide vanes, insufficient motor speed, air leakage in pipelines, etc.
Solutions: Replace impellers or guide vanes, clear blockages, inspect and adjust motor speed, repair air leakage points on pipelines.
Excessive vibration and noise
Causes: Bent pump shaft, damaged bearings, unbalanced impeller, blocked pipelines, etc.
Solutions: Straighten the pump shaft, replace bearings, perform impeller balancing, clear pipeline blockages.
Excessively high pump temperature
Causes: Damaged bearings, insufficient lubrication, bent pump shaft, etc.
Solutions: Replace bearings, replenish lubricant, straighten the pump shaft.
Liquid leakage
Causes: Worn or damaged wear rings, air/liquid leakage at pipeline joints, etc.
Solutions: Replace wear rings, repair leakage points on pipelines.
When troubleshooting the self-balancing horizontal multistage pump, identify the root cause first and then adopt corresponding solutions. If the above measures cannot resolve the faults, please contact professional maintenance personnel.To guarantee stable operation and extend service life, conduct regular inspection and maintenance, and eliminate potential problems in a timely manner.
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Hunan Sanchang Pump Co., Ltd.
| Email: | info@sanchangpump.net |
| Hotline: | +86 181 4266 2779 |
| +86 193 1300 1794 | |
| Mobile/Wechat/WhatsApp: | +86 181 4266 2779 |
| Address: | No.517,Xiangfu Road, Yuhua |
| District, Changsha City | |
| Hunan Province, P.R.C |
