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In the Philippines, where maritime activities and infrastructure development are booming, selecting the right sand dredging pump is paramount for efficient operations. This comprehensive guide offers valuable insights to help you choose the optimal dredging pump for your specific project needs, ensuring maximum productivity and minimal downtime. Whether it&#;s for land reclamation, port maintenance, or environmental restoration, the right pump makes all the difference. Learn how to pick the perfect sand dredging pump for your operations in the Philippines.

1. Understanding Sand Dredging Pumps: Types and Features

OCEAN Pump Company specializes in two main types of pumps: heavy-duty sand dredging pumps and submersible sand dredging pumps.

Heavy-duty sand dredging pumps are known for their high efficiency and stability, making them ideal for large-flow sand extraction. They operate by using centrifugal force to expel a mixture of sand and water from the pump body, making them suitable for long-distance transport. Their advantages include simple operation and easy maintenance; however, they may face limitations in deep-water applications.

Submersible sand dredging pumps are designed to operate underwater, directly extracting sand and sludge. They excel in deeper water environments and can handle high concentrations of solid particles, making them suitable for mining and environmental projects. However, their complex structure can make maintenance and replacement of parts more challenging.

The choice between these sand dredging pump types depends on the specific working environment and requirements. Heavy-duty sand dredging pumps are better for high-flow and long-distance transport, while submersible sand dredging pumps perform better in deep-water and high solid concentration conditions.

2. Key Factors to Consider When Choosing a Sand Dredging Pump

2.1 Flow Rate and Pipe Diameter

Flow rate refers to the amount of liquid delivered by a pump per unit time, usually measured in cubic meters per hour (m³/h). The diameter of the pipe must be adapted to the flow rate to ensure that suspended matter such as silt can pass smoothly, avoiding sedimentation or blockage in the pipe. Conversely, the pipe diameter should not be too large to prevent insufficient pressure inside the pipe, which could cause suspended matter to settle.

The unit conversion relationships for flow rate are as follows:

• Cubic meter per hour (m³/h) is the SI unit of flow rate. 1 m³/h is equal to 1,000 liters per hour (1,000 L/h).
• 1 cubic meter per second (m³/s) is equal to 3,600 cubic meters per hour (m³/h).
• US gallons per minute (GPM) and liters per second (L/s) are also commonly used flow units:1 GPM (US gallons per minute) is equal to 0. m³/h.1 L/s is equal to 3.6 m³/h.

2.2 Lift Head

Lift head refers to the height to which the pump lifts the liquid. This parameter needs to comprehensively consider the drainage height and the energy loss in the piping system. When selecting pump equipment, a certain head margin should be reserved to compensate for pump wear and pipeline loss.

When determining the pump type, the manufacturer must be provided with accurate slurry lifting height data, including the vertical and horizontal distances from the water surface to the target location. For example, a customer in the Philippines wants to extract sand from a river with a water depth of 4 meters and transport it to a height of 5 meters over a distance of 100 meters. When calculating the required head, in addition to the vertical lifting height of 5 meters and the horizontal transportation distance of 100 meters, the energy loss of the pipeline system must also be taken into account. For precise calculations, it is recommended to consult with an engineer from OCEAN Pump.

2.3 Density and Concentration

The liquid transported by the sand pump contains solid particles, and its density and concentration affect the power demand and wear rate of the pump. When selecting a suitable pump, it must be ensured that it can cope with the specific slurry density and solid concentration.

Heavy-duty sand dredging pumps and submersible sand dredging pumps have distinct characteristics in handling media with varying densities and concentrations:

• Heavy-duty sand dredging pumps are designed for conveying media containing solid particles. The concentration of the conveyed medium can reach more than 40%, and the particle size can reach up to 254 mm.
• Submersible sand dredging pumps are suitable for conveying liquids containing solid particles such as sand, coal slag, and tailings. When using a submersible slurry pump, the maximum volume concentration of solid particles in the medium is usually 30%, and the maximum medium density is 1.2 kg/L.

Therefore, when selecting a pump, it is necessary to ensure that the specifications can adapt to the density and concentration of the medium under specific conditions to ensure stable operation and extend the pump&#;s service life.

2.4 Power Requirements

Heavy-duty sand dredging pumps and submersible sand dredging pumps are widely used in sand extraction and conveying media containing solid particles.

• Heavy-duty sand dredging pumps have flexible driving modes and can be powered by a diesel engine or a motor, depending on the power supply availability:Diesel engine drive is ideal for field and remote areas without stable power or for mobile operations due to its stability and portability.Motor drive is more suitable for environments with a stable power supply due to its low cost and easy maintenance.
• Submersible sand dredging pumps are usually driven by motors. The motor and pump body are integrated into a design suitable for underwater work, effectively preventing high-pressure water and impurities from entering the motor and ensuring safe operation. With technological advancements, submersible sand dredging pumps can also be hydraulically driven, suitable for outdoor operations requiring greater power and higher reliability, such as flood control or temporary drainage. Additionally, these pumps can be installed on excavators to provide highly integrated construction solutions, improving operational flexibility and efficiency.

3. Main Differences Between Heavy-Duty and Submersible Sand Dredging Pumps

3.1 Driving Mode

• Heavy-duty sand dredging pumps can use diesel engines or motors as power sources.
• Submersible sand dredging pumps are usually driven by motors integrated with the pump body.

This means that while heavy-duty pumps offer flexibility in installation and movement, submersible pumps reduce space occupation and improve operational stability.

3.2 Maintenance Requirements

• Heavy-duty pumps:Diesel engine-driven: Regularly check fuel, lubricating oil, and cooling systems.Motor-driven: Regularly inspect electrical circuits and perform motor maintenance.
• Submersible pumps: Focus on sealing inspections of the motor and pump body and maintain the cooling system to prevent motor overheating.

3.3 Operating Environment

• Heavy-duty pumps operate on the ground, convenient for observation and maintenance.
• Submersible pumps are submerged in water and require connection to the power supply or control panel via a cable, necessitating higher operator skills.

Are you interested in learning more about Marine Dredging Pump vendor? Contact us today to secure an expert consultation!

3.4 Maintenance Cycle

• Heavy-duty pumps: Maintenance cycles depend on the use of the diesel engine or motor and are determined by the frequency and intensity of use.
• Submersible pumps: Maintenance cycles depend more on internal wear, especially of the impeller and pump casing.

3.5 Safety

• Submersible pumps: Special attention to electrical safety is crucial to avoid risks from cable damage or pump leakage.
• Heavy-duty pumps: Ensure mechanical stability and prevent diesel leakage.

3.6 Application Scenarios

• Heavy-duty pumps are suitable for ground-based sand pumping operations.
• Submersible pumps are ideal for underwater sand pumping or dredging operations, especially in rivers, lakes, and similar environments.

4. Summary

• Heavy-duty sand dredging pumps excel in projects like river dredging and land reclamation due to their flexibility and efficient sand pumping capacity.
• Submersible sand dredging pumps are highly favored in silt removal and suction fields because of their strong silt suction capacity and wear resistance. The submersible pumps produced by OCEAN Pump feature an integrated motor and pump body design, optimizing efficiency and reliability, suitable for long-term safe operation under harsh working conditions.

Suggestions for Improvement

• Consistency in Terminology: Ensure consistent use of terms such as &#;heavy-duty sand dredging pumps&#; and &#;submersible sand dredging pumps&#; throughout the article.
• Clarity in Technical Sections: Provide more detailed explanations or calculations where technical aspects are complex, such as in lift head calculations.
• Professional Tone: Maintain an academic tone by avoiding colloquial expressions like &#;Dive in&#; and focusing on formal language.
• Reference Consultations Appropriately: Instead of mentioning specific individuals, recommend consulting with professionals or engineers at OCEAN Pump for tailored advice.

Lingda Kong

   marine dredging pump

SGB&#;s N series dredging pump can be used as marine dredging pump for dredging purposes. Marine dredging is the process of excavating and removing material from the bottom of an ocean, river, pond, or other large bodies of water. Dredging is mainly used for marine construction projects, mining, sediment removal, environmental remediation, canal deepening, harbor maintenance, and many more. Marine dredging requires different types of dredgers, and the dredging pump is the core equipment of the dredger, which is called the "heart" of the dredger in the industry.

 

How the marine dredging pump works

    The marine dredging pump mainly completes the purpose of dredging through the movement of water. It looses the underwater soil layer by mechanical or high-pressure water cutting, so that the sediment and water are mixed to form a mud water mixture (mud) with a certain concentration, and then the mud is sucked into the pump through the vacuum of the suction port of the dredging pump installed on the ship, and then discharged to the mud tank of the dredger, or directly discharged to the side mud barge, or transported to the reclamation area through the sludge discharge pipeline, so as to achieve the purpose of dredging and reclamation.\

 

Classification and introduction of marine dredging pump

    According to the dredging pump export diameter to be divided into: Φ200&#;Φ250&#;Φ300&#;Φ350&#;Φ450&#;Φ500&#;Φ600&#;Φ650&#;Φ700&#;Φ800&#;Φ900&#;Φ&#;

    According to the use position of dredging pump to be divided into: underwater pump, cabin pump;

    According to the structure of dredging pump to be divided into: single-case pump, double-case pump.

    The cabin pump has two structures: single-case pump and double-case pump. Generally, under the condition of low head, the single-case pump can meet the requirements of on-site working conditions; Due to the high hardness, poor toughness and impact resistance of high wear-resistant alloy, all high head dredging pumps often use double-case pumps. The inner case is made of high wear-resistant alloy, and high-pressure water with certain pressure is rushed between the inner and outer cases to balance and compensate the stress of the inner case.

    The underwater pump appears with the continuous improvement of the requirements for excavation depth and production. It is installed underwater. Due to the positive pressure of water pressure, the suction capacity is very strong. The operation of underwater pump is not affected by NPSH, which can improve the suction concentration of mud. Most of the head is 20-30m, which can be directly loaded into the warehouse, filled and transported ashore by ship; It can also be used in series with the cabin pump for long-distance mud transportation.

 

Marine dredging pump features:

1. The number of vanes of the impeller is 3-5 to ensure sufficient passing capacity;

2. It must have good cavitation performance to ensure the dredging effect of the pump under the condition of large excavation depth;

3. Outlet diameter of dredging pumps of φ 600 below, bearing lubrication generally using grease lubrication structure, for φ 600 and above using thin oil lubrication or thin oil lubrication station for forced lubrication;

4. Shaft seal type: packing seal, liquidyne seal, mechanical seal with packing compound seal;

5. Small hydraulic loss, high efficiency and low energy consumption;

6. Good wear resistance, long service life of flow parts.

 

Dredging Market Customers:

Qinghai Saline Lake Potash Corp

Changjiang Nanjing Waterway Engineering Bureau

 

Contact us to discuss your requirements of Marine Dredging Pump China. Our experienced sales team can help you identify the options that best suit your needs.