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 fluids with a temperature not exceeding 80°C and a viscosity ranging from 5 × 10-6 to 1.5 × 10-3 m²/s (5-1500 cSt), such as lubricating oil or similar liquids.
Features
1. The KCB horizontal multistage gear oil centrifugal pump features a vertical structure with a compact footprint. Its center of gravity aligns with the pump foot, ensuring smooth operation, minimal vibration, and an extended service life.
2. With the same caliber and horizontal center line, it can be directly installed in any part of the pipeline without modifying the pipeline structure, making installation extremely convenient.
3. The motor, equipped with a rain cover, can be placed outdoors without the need for 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 offering a wide range of applications.
5. The shaft seal uses a carbide mechanical seal, providing reliable sealing, no leakage, and reduced mechanical loss.
6. Energy-efficient design with an attractive appearance.
7. Note: Casting above 50 caliber is formed using internal casting techniques. Conditions of Use
1. Used to transport clean water or liquids with physical and chemical properties similar to clear liquid.
2. The liquid must be free of solid particles, fibers, corrosive substances, and explosive risks.
3. Maximum liquid temperature should not exceed 120°C.
4. Maximum working pressure should not exceed 2.5 MPa.
5. Power supply is three-phase 380V, 50Hz, with voltage fluctuations within ±5%.
6. Ambient temperature should be below 40°C, and relative humidity should be under 95%.
7. If transporting corrosive media or hot liquids, please specify this when ordering so we can use special materials accordingly. Application
The KCB gear pump is ideal for conveying 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 (5-1500 cSt), such as lubricating oil or similar liquids. 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 has a complete motor structure, pre-calibrated at the factory, so no adjustment is needed during installation, making it very convenient.
3. Before installation, check carefully for any hard materials (such as stones, iron sand) that may block the impeller, which could cause damage.
4. During installation, tighten the anchor bolts and check periodically to prevent loosening, avoiding violent vibrations upon startup that could affect performance.
5. For convenience and safety, install a control valve on the inlet and outlet pipelines and a pressure gauge near the pump. For high lift, install a check valve before the outlet gate to handle sudden power outages, ensuring optimal pump operation and extending its lifespan.
6. For suction applications, install a valve at the end of the pipeline and ensure the inlet pipe has few bends to avoid leakage, which could impact the pump’s suction performance. Start and Stop
Preparation Before Starting
1. Manually turn the coupling to ensure the impeller rotates freely without any jamming.
2. Open the inlet valve and exhaust valve to fill the pump chamber with liquid, then close the exhaust valve.
3. If pumping hot liquid, preheat the pump at a rate of 50°C per hour through continuous circulation to ensure even heating.
4. Manually activate the pump several times to allow lubrication fluid to reach the mechanical seal face.
5. Check the motor direction to ensure it is correct.
Start and Operation
1. Fully open the inlet valve and close the discharge valve.
2. Connect the power and gradually open the discharge valve once the pump reaches normal speed, adjusting to the required conditions.
3. Monitor the instrument readings, check the shaft seal leakage (normal leakage is about 3 drops per minute), and ensure the motor and bearing temperature stays 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. For long-term shutdown, disassemble, clean, package, and store the pump properly. Repair and Maintenance
Operation, Maintenance, and Care
1. The inlet pipe must be tightly sealed to prevent leaks.
2. Long-term cavitation operation is strictly prohibited.
3. Avoid operating the pump under high flow conditions that could cause motor overcurrent.
4. Regularly check the motor current to ensure the pump operates within design parameters.
5. A person should monitor the pump during operation to prevent accidents.
6. Refuel the pump after every 500 hours of operation.
7. After long-term use, due to wear and tear, noise and vibration may increase. Inspect the pump, replace worn parts and bearings, and perform a major overhaul annually.
Mechanical Seal Maintenance and Repair
1. The mechanical seal lubricant must be clean and free of solid particles.
2. Dry grinding of the mechanical seal is strictly prohibited.
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 | May Cause the Reason | To Exclude |
|
1. The pump does not draw water |
Inlet valve not open, pipeline blockage, impeller blockage Motor running in wrong direction, motor phase loss, slow speed Suction tube leak Pump not filled with liquid, air in cavity Inadequate water supply, high suction lift, leakage at end Pipeline resistance too high, pump selection inappropriate |
Check and remove obstruction Adjust motor direction, tighten wiring Tighten sealing surface, remove air Open pump cover or exhaust valve to remove air Stop checking and adjust Reduce pipe bends, re-select pump |
|
2. Pump flow is less than expected |
Pipe, pump runner, or impeller blockage, scale buildup Low voltage Impeller wear |
First exclude 1 Remove blockage and adjust valve opening Regulate Replace impeller |
|
3. Power is too high |
Exceeds rated flow High suction lift Pump bearing wear |
Adjust flow, close small outlet valve Lower suction lift Replace bearing |
| 4. Noise and Vibration | Unstable pipe support Liquid mixed with gas Cavitation occurs Bearing damaged Motor overloaded |
Secure the pipe Raise suction pressure and vent Reduce vacuum level Replace bearing Adjust by 5% |
| 5. Motor overheats | Excessive flow, overload operation Partial friction Motor bearing damage Low voltage |
Close the outlet valve slightly Check and resolve Replace bearing Regulate voltage |
| 6. Pump Leaks | Mechanical seal wear Pump has sand holes or cracks Sealing surface not smooth Loose mounting |
Tighten screws Weld or replace Smooth the surface Tighten the mounting |
First, provide details including multi-stage centrifugal pump product name and model, diameter, head (m), motor power (KW), speed (r/min), voltage (V), suction (m), and accessories to help us select the right pump for you.
Second, if your design unit has selected our multi-stage centrifugal pump model, please submit the model directly to the Yangtze River Pump Company Sales Order.
Third, if the application is critical or the environment is complex, try to provide design drawings and detailed parameters for review by our technical experts at Yangtze River Pumps.
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