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| Email: | info@sanchangpump.net |
| Hotline： | +86 181 4266 2779 |
| +86 193 1300 1794 | |
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| Address： | No.517,Xiangfu Road |
| Yuhua District, | |
| Changsha City | |
| Hunan Province, P.R.C |
FY Type Stainless Steel Corrosion-resistant Submersible Pump
Classification:
Submersible Pump
Salt Chemical Industry
Metallurgical Industry
Energy-saving Renovation
Key words:
Submersible Pump
Corrosion-resistant Pump
Stainless Steel Centrifugal Pump
Hotline:
- Product Description
- Performance Parameter
- Installation Drawings
- Installation And Use
- Faults And Solutions
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- Commodity name: FY Type Stainless Steel Corrosion-resistant Submersible Pump
Flow Range: 3.27～100.8 m3/h</br> Head Range: 13~40 m</br> Fluid Temperature: -20～140℃</br> Inlet Pressure: ≤0.3 MPa</br> Shaft Seal: mechanical seal</br> Available Materials: HT200、HT250、QT600、ZG、304、316、316L、317L、904L、CD4-MCu, etc</br></br></br>
Product Description
FY type stainless steel corrosion-resistant submersible pump is a newly developed model optimized on the basis of traditional corrosion-resistant submersible pumps, integrating advanced technologies of Sulzer (Switzerland). It eliminates the conventional mechanical seal adopted by most submersible pumps and is fitted with impellers of a unique structure. Featuring high efficiency, energy saving, zero leakage and long service life, this pump is widely used in petroleum, chemical, pharmaceutical, papermaking, metallurgy, wastewater treatment and other industries.
Overview
The FY series is a vertical long-shaft centrifugal pump. All wetted parts are made of cast steel or stainless steel. The submersible depth ranges from 0.5 m to 6 m as required by customers. The working section is fully immersed in liquid. This pump features wide application range and high efficiency, and requires no priming before operation.
The axial and radial forces generated during operation are borne respectively by the rolling bearings above the liquid level and sliding bearings under the liquid level, ensuring quiet operation. It is a high-tech product integrating environmental protection and energy saving.
Structure Description
The FY pump mainly consists of pump casing, pump cover, impeller, flexible coupling, pipe flange, guide bearing, intermediate pipe, upper and lower discharge pipes, bearing bracket and base plate. The suction port is arranged along the shaft axis, and the discharge port is parallel to the shaft axis. Viewed from the motor end, the pump rotates clockwise.
The vertical motor is fastened to the motor base with stud bolts and directly connected to the pump via a flexible coupling. The pump casing, intermediate pipe, bearing bracket, discharge pipe and pipe flange are bolted together as an integral unit and mounted on the base plate. The whole pump is installed on the liquid container through the base plate. Except for wetted components, major parts such as motor base, bearing bracket and base plate are made of cast iron.
All axial and radial forces (including hydraulic pressure on the pump cover, weight of impeller and rotor assembly, etc.) are supported by single-row thrust roller bearings, double-row radial ball bearings inside the bearing housing and sliding guide bearings. For reliable operation, the two rolling bearings are lubricated with grease. The guide bearings are lubricated by the conveyed medium. If the medium contains a normal amount of fine particles, the guide bearings shall be lubricated with externally supplied clean liquid.
J-type oil seals are installed to seal the gap between the shaft and baffle plate, preventing leakage of corrosive gas. According to the viscosity of conveyed media, closed or semi-open impellers are available, among which closed impellers are commonly used.
Based on different submersible lengths, the pump is divided into two types: with intermediate guide bearings and without guide bearings.
1. As a vertical submersible pump, it has a compact and neat appearance. It is directly mounted on the liquid storage tank without occupying extra floor space, thus reducing infrastructure costs.
2. The design without mechanical seals avoids frequent maintenance caused by seal wear on ordinary submersible pumps, cutting operating costs and improving working efficiency.
3. The specially designed centrifugal double-balanced closed impeller is applied for clean liquid free of solid particles, delivering ultra-low vibration and noise as well as high efficiency. The open double-balanced impeller is suitable for liquids containing solid particles and short fibers, featuring stable operation and anti-clogging performance.
Model Description
Example: 50FYB-25AK
50 -- Pump suction diameter: 50 mm
FY -- Submersible Pump
B -- Material: 1Cr18Ni9Ti stainless steel
25 -- Rated head: 25 m
A -- Impeller with first diameter trimming
K -- Open-type impeller
Operating Conditions
1. Temperature of conveyed medium: -20℃ ~ 140℃
2. For cast iron pumps: pH value of medium shall be kept between 5 and 9
3. For pumps with open impellers: The diameter of solid particles in liquid shall not exceed 30% of the pump suction port diameter
Structure Features
1. As a vertical submerged pump, it has an attractive appearance and can be directly installed on liquid storage tanks with no extra floor space required, which lowers infrastructure investment.
2. Mechanical seal is eliminated, resolving the problem of frequent maintenance due to seal wear on conventional submerged pumps. It reduces operating costs and improves working efficiency.
3. The unique centrifugal double-balanced impeller is adopted. The closed type is for clean media without solid particles, featuring low vibration, low noise and high efficiency. The open type is for contaminated media with solid particles and short fibers, ensuring stable operation and anti-blocking performance.
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Flow Range: 3.27～100.8 m3/h
Head Range: 13~40 m
Fluid Temperature: -20～140℃
Inlet Pressure: ≤0.3 MPa
Shaft Seal: mechanical seal
Available Materials: HT200、HT250、QT600、ZG、304、316、316L、317L、904L、CD4-MCu, etc
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Disassembly and Assembly
1. To inspect or replace the impeller, close the outlet valve, remove flange bolts and base plate bolts, then lift the pump out of the container with lifting tools.
2. Place the base plate on the support bracket. Remove all bolts of the pump casing, take out the pump cover and impeller nut. Gently tap the pump casing with two hammers to detach the impeller.
3. When replacing rolling bearings or packing, keep the base plate fixed. Remove the motor and matching brackets first, then take off the pump coupling, gland and round nut, and extract the bearing assembly. For packing replacement, remove the packing gland before taking out the old packing and installing new ones.
4. Perform assembly in the reverse order of disassembly. Ensure good concentricity of all shaft-mounted components.
Installation, Operation and Maintenance
1. After assembly, rotate the coupling manually to check flexible movement. Listen for metal friction and verify all nuts are fully tightened.
2. Check the concentricity between pump shaft and motor shaft. The radial runout of the two couplings shall not exceed 0.1 mm, and the end face clearance shall be kept within 1 ~ 2.5 mm.
3. The distance from the pump suction port to the container bottom shall be 2 to 3 times the suction diameter. The gap between pump casing and container wall shall be more than 2.5 times the suction diameter.
4. The discharge pipeline shall be supported by independent brackets. The pipeline weight shall not be borne by the pump.
5. Confirm the motor rotation direction to ensure the pump runs as marked.
6. Close the gate valve and pressure gauge on the outlet pipeline, and connect the cooling water pipe.
7. Start the motor, turn on the pressure gauge, then slowly open the outlet gate valve to the required position for normal operation.
8. Inspect the pump and motor regularly. The temperature rise of bearings shall not exceed 75℃, and the bearing housing shall be filled with sufficient grease.
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Pump Fails to Start
1. Power failure: Check the power switch and circuits.
2. Motor wiring fault: Inspect the motor connections.
3. Internal blockage: Check for foreign objects inside the pump.
4. Motor breakdown: Examine the motor for damage.
Reduced Water Output
1. Air leakage in pump chamber: Inspect the shaft seal, sealing rings and valves for damage.
2. Air leakage of inlet valve: Check whether the valve sealing ring is damaged.
3. Foreign matter, friction or blockage inside pump chamber: Remove foreign objects and clear deposits inside the pump.
Excessive Operating Noise
1. Loose connection between pump base and bracket: Reinstall or replace the bracket.
2. Poor fitting between pump chamber and pump body: Adjust the axial clearance to ensure tight contact.
3. Damaged bearings or foreign matter ingress: Replace the bearings.
Excessive Pump Temperature
1. Pump burnout: Inspect the damaged parts and replace defective components.
2. Damaged bearings or inadequate lubrication: Check the bearings and lubrication system, replace faulty bearings and maintain proper lubrication.
The above are common faults and corresponding solutions for submerged pumps. Regular maintenance is required during operation. Please troubleshoot faults timely according to actual conditions, so as to extend the service life of the pump and ensure production safety.
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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 |
