Model NO.: KCB
Position of Pump Shaft: Vertical Pump
Pump Casing Combined: Vertical Joint Surface Pump
Mounting Height: Suction Centrifugal
Impeller: Closed
Usage: Pump, Pumps, Condensate Pump, Ash Pumps, Circulating Pump
Colour: Customize
Certificate: ISO9001:2000
Trademark: Lyson
Transport Package: Wooden Sealed Packaging
Specification: Caliber: 20~350mm
Origin: China
HS Code: 8413709990
IntroductionThe KCB gear pump is designed for conveying liquids that do not contain solid particles or fibers. It is suitable for non-corrosive liquids with a temperature not exceeding 80°C and a viscosity ranging from 5 × 10-6 to 1.5 × 10-3 m²/s (5-1500cSt), such as lubricating oil or similar fluids.
Features
1. The KCB horizontal multistage gear oil centrifugal pump features a vertical structure with a small footprint. Its center of gravity aligns with the pump base, ensuring smooth operation and minimal vibration, offering a long service life.
2. Designed with the same caliber and horizontal center line, it can be directly installed in any part of the pipeline without altering the pipeline structure, making installation extremely convenient.
3. The motor with a rain cover can be placed outdoors without requiring a dedicated pump room, significantly reducing capital investment.
4. The pump head can be adjusted by changing the number of impellers, allowing it to meet different requirements and expanding its range of applications.
5. Equipped with a carbide mechanical seal, it ensures reliable sealing, no leakage, and reduced mechanical loss.
6. Energy-efficient design with an aesthetically pleasing appearance.
7. Note: Castings above 50mm caliber are formed using specific techniques. Conditions of Use
1. Used to transport clean water or liquids with physical and chemical properties similar to clear liquid.
2. The liquid should not contain solid particles, fibers, or corrosive substances, and there should be no risk of explosion.
3. Maximum liquid temperature does not exceed 120°C.
4. Maximum working pressure does not exceed 2.5MPa.
5. Power supply: 3-phase 380V, 50Hz. Voltage fluctuations within ±5%.
6. Ambient temperature below 40°C, relative humidity below 95%.
7. If transporting corrosive media or hot liquids, please specify when ordering so that special materials can be used to meet the conditions. Application
The KCB gear pump is ideal for transporting non-corrosive liquids without solid particles or fibers, with temperatures not exceeding 80°C and viscosities between 5 × 10-6 and 1.5 × 10-3 m²/s (5-1500cSt), such as lubricating oil or similar fluids. Technical Parameters
| Q=1.4~192m³/h | H=33~230m |
| n=2900r/min | P=1.1~132kw |
| Dna=25~150mm | DNm=25~150mm |
| Temperature Range=-15ºC~120ºC | Work Pressure≤2.5Mpa |
1. Ensure the pipe weight does not bear on the pump or vulnerable parts.
2. The pump is a fully integrated motor unit, pre-calibrated at the factory, so no adjustment is needed during installation, making it very convenient.
3. Before installation, carefully check for any foreign objects that may cause damage to the impeller or blockage.
4. Secure anchor bolts tightly and ensure all components are properly fastened to prevent loosening during operation, avoiding violent vibrations upon startup.
5. Install a control valve on the inlet and outlet piping and place a pressure gauge near the pump. For high lift systems, install a check valve before the outlet gate to protect against sudden power outages and other failures, ensuring optimal performance and extended pump life.
6. For suction applications, equip the pump with a shut-off valve and ensure the inlet pipe has minimal bends to prevent leaks that could affect suction performance.
Start and Stop
Preparation Before Starting
1. Manually rotate the coupling to ensure the impeller moves freely without grinding.
2. Open the inlet valve and exhaust valve to fill the pump chamber with liquid, then close the exhaust valve.
3. If transporting hot liquid, preheat the pump gradually at a rate of 50°C per hour through continuous circulation to ensure even heating.
4. Manually operate the pump several times to lubricate the mechanical seal face.
5. Check the motor rotation direction to ensure it is correct.
Start and Run
1. Fully open the inlet valve and close the discharge valve.
2. Connect the power and, once the pump reaches normal speed, gradually open the discharge valve and adjust to the required conditions.
3. Monitor instrument readings, check for shaft seal leakage (normal leakage is about 3 drops per minute), and ensure the motor and bearing temperatures remain below 70°C. Address any abnormalities promptly.
Shutdown
1. Gradually close the discharge valve.
2. Close the inlet valve.
3. If the ambient temperature is below 0°C, drain the pump to prevent freezing and cracking.
4. If the pump will be idle for a long time, disassemble, clean, package, and store it properly.
Repair and Maintenance
Operation, Maintenance, and Care
1. Ensure the inlet pipe is highly sealed to prevent leaks.
2. Prohibit long-term operation under cavitation conditions.
3. Avoid operating the pump at high flow rates for extended periods to prevent motor overcurrent.
4. Regularly monitor the motor current during operation to ensure the pump runs within design parameters.
5. Assign someone to monitor the pump during operation to avoid accidents.
6. Refuel the pump every 500 hours of operation.
7. After long-term use, mechanical wear may increase noise and vibration. Inspect and replace worn parts and bearings; the overhaul period is generally one year.
Mechanical Seal Maintenance and Repair
1. Ensure the mechanical seal lubricant is clean and free of solid particles.
2. Strictly prohibit dry running of the mechanical seal.
3. Before starting the pump, manually activate it a few times to prevent sudden start-up damage to the mechanical seal.
Causes of Failure and Troubleshooting
| Trouble Phenomenon | Possible Causes | Solutions |
1. The pump does not deliver water |
Inlet valve not open, pipeline blockage, impeller obstruction Motor rotating in wrong direction, phase loss causing slow speed Suction tube leakage Pump not filled with liquid, air present in cavity Inadequate water supply, excessive suction lift, end valve leakage Pipeline resistance too high, improper pump selection |
Check and remove obstructions Adjust motor direction, tighten wiring Tighten sealing surface, remove air Open pump cover or exhaust valve to release air Stop and adjust Reduce bends, select appropriate pump |
2. Flow is less than expected |
Pipe, pump runner, or impeller blockage, scale buildup Low voltage Impeller wear |
First eliminate issue 1 Remove obstruction, adjust valve opening Regulate voltage Replace impeller |
3. Excessive power consumption |
Exceeds rated flow High suction lift Pump bearing wear |
Adjust flow, reduce outlet valve opening Lower suction lift Replace bearing |
| 4. Noise and vibration | Unstable pipe support Liquid mixed with gas Cavitation Bearing damage Motor overloaded |
Secure pipe support Increase suction pressure, vent air Reduce vacuum level Replace bearing Adjust load |
| 5. Motor overheating | Excessive flow, overload operation Partial friction Motor bearing damage Low voltage |
Reduce outlet valve opening Inspect and fix issues Replace bearing Regulate voltage |
| 6. Pump leakage | Mechanical seal wear Pump has sand holes or cracks Sealing surface not smooth Loose mounting |
Tighten screws Weld or replace damaged parts Smooth sealing surface Tighten mounting |
First, provide the product name and model, diameter, head (m), motor power (KW), speed (r/min), voltage (V), suction (m), and accessories for accurate selection.
Second, if your design team has selected our multi-stage centrifugal pump model, please directly submit the model to Yangtze River Pump Company's sales order.
Third, if the application is critical or the environment is complex, please provide detailed design drawings and parameters for review by our technical experts at Yangtze River Pumps.
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