1. Project Background of Vertical Sand Pump

Vertical dredge pump is primarily used to transport sand and gravel in coastal regions where large quantities. The sand – carrying ship is mainly used for sand transportation in coastal waters, handling a large volume of sand daily. Traditional discharge methods were inefficient and caused severe equipment wear, failing to meet the high – intensity operational demands. Additionally, the dry sand on the ship was difficult to extract directly, necessitating a solution to moisten and convey it effectively.

2. Product Configuration and Parameters of Vertical Sand Pump

2.1 10-inch Vertical Sand Pump

Model: 10-inch vertical sand pump (8 units)
Pure Sand Flow Rate: 300 cubic meters per hour per unit
Head: 30 meters
Power: 90 kilowatts
Outlet Size: 250 mm (10 inches)
Maximum Particle Passage: 35 mm
Working Voltage: 380 V, 50 Hz
The pump is manufactured using high-quality materials, ensuring excellent wear and corrosion resistance. It is designed for high-concentration sand-slurry conveyance. Its vertical structure simplifies installation and maintenance while saving space on the ship.

2.2 High-Pressure Pump

Model: 350S-44
Flow Rate: 860–1400 cubic meters per hour
Head: 30–41 meters
Speed: 1470 rpm
Power: 220 kilowatts
The high-pressure pump supplies necessary moisture to dry sand, making extraction and conveyance easier. Featuring an advanced tandem pump system, it provides stable high-pressure water flow, ensuring thorough sand moistening without compromising quality.

3. Implementation Process of Vertical Sand Pump

3.1 Installation and Commissioning

Technicians installed the 10-inch vertical sand pump in the middle of the ship for efficient sand extraction. The high-pressure pump was positioned at the bow near the water source and connected to the sand pump via pipes. Engineers meticulously checked all components, conducted strict seal tests on the pipelines, and ensured no leaks occurred.

3.2 Operation Procedure

To discharge sand, operators first start the high-pressure pump, which sprays seawater onto dry sand through a high-pressure water gun. This creates a water film and increases moisture. After 10–15 minutes, the sand’s flowability improves, and the vertical sand pump is activated to convey the moistened sand-slurry through pipes to the designated sea area.

3.3 Operation Monitoring and Maintenance

Operators monitor real-time parameters such as flow rate, pressure, and power via the control panel to ensure optimal performance. Regular inspections and maintenance are performed on key components like the pump’s flow parts and sealing devices. Worn parts are replaced promptly. Additionally, a professional fault diagnosis system quickly identifies and resolves issues, minimizing downtime.
Vertical sand suction pump
Vertical sand suction pump

4. Performance Evaluation

This solution significantly enhanced the ship’s sand discharge efficiency, achieving a stable rate of 2,000 cubic meters per hour. Compared to traditional methods, it reduced time and labor costs while improving equipment stability and reliability by about 40%. The rational configuration of the high – pressure pump ensured no over – moistening or caking of the sand, maintaining its quality and supporting the client’s business development.

5. Issues and Solutions

Initially, operators unfamiliar with the equipment caused uneven sand moistening due to improper adjustment of the high – pressure water gun’s spray angle and water intensity. We provided professional training and established detailed operating procedures to ensure uniform sand moistening. Also, pipeline blockages from impurities in seawater were resolved by installing fine filtration devices at the high – pressure pump’s inlet and regularly cleaning and replacing them to maintain system patency.

6 .Conclusion

The combination of a 10 – inch vertical sand pump and a high – pressure pump offers an efficient, stable, and economical solution for sand discharge on sand – carrying ships. Through proper selection, precise installation, and scientific operation, it meets the client’s requirements for discharge efficiency and quality, reduces costs, and creates significant economic benefits. This case highlights our products’ outstanding performance in sand – slurry conveyance and provides valuable experience for similar projects.

6-inch Vertical Slurry Pump for fish pond dredging in Jiangxi
vertical sand pump