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The portable submersible suction dredger 250mm is engineered with a focus on mobility and ease of use. Its compact size makes it a game - changer for projects where traditional large - scale dredgers are impractical. The entire unit is designed to be lightweight, allowing for easy transportation and quick deployment. This is achieved through the use of high - strength, yet lightweight materials in its construction. For example, the outer casing may be made of advanced composite materials that offer excellent corrosion resistance while reducing the overall weight. This design feature enables a single operator or a small team to move the dredger to different locations, whether it's a small pond, a narrow canal, or a remote construction site.
One of the most distinctive design elements is its submersible nature. The dredger can be fully submerged into the water body, getting close to the source of the sediment or material to be removed. This eliminates the need for complex and bulky above - water structures, reducing the footprint of the equipment. The submersible design also allows for more efficient suction, as the pump can directly draw in the slurry without having to overcome significant vertical distances. Additionally, the submersible components are sealed to prevent water ingress, ensuring the longevity and reliability of the electrical and mechanical parts.
The 250mmdischarge diameter strikes a perfect balance between suction power and portability. A larger diameter would increase the volume of material that can be processed but would also add to the size and weight of the dredger. The 250mm size is sufficient to handle a substantial amount of slurry, making it suitable for a wide range of applications. It can efficiently draw in sediment, sand, and other debris, even in relatively viscous or dense mixtures. The suction pipe is designed with a smooth interior surface to minimize friction and ensure a continuous flow of the slurry.
The portable submersible suction dredger often features a modular design. This means that different components, such as the suction head, the pump, and the power unit, can be easily detached and replaced. For instance, if the suction head becomes worn out or damaged, it can be quickly swapped with a new one without having to disassemble the entire dredger. This modularity not only simplifies maintenance but also allows for customization. Users can choose to upgrade certain components based on the specific requirements of their projects, such as installing a more powerful pump for tougher materials or a specialized suction head for delicate environments.
Parameter | Value/Description |
Model | IT-ESPD 250 |
Power Source | 3-phase AC, 380V/50Hz (customizable to 460V/60Hz) |
Motor Power | 90-220 kW |
Max Flow Rate | 500-900 m³/h (adjustable via VFD) |
Max Head | 20-90 meters (115 ft) |
Submersible Depth | Up to 20 meters (66 ft) |
Solid Handling | Up to 50% solids by weight; Max particle size: 50 mm |
Impeller Type | Closed-type, high-chrome alloy (Cr26) with 3–6 vanes |
Discharge Connection | Flanged 250 mm (DIN/ANSI standard) |
High - Performance Motor: The electric submersible sand dredge pump is powered by a high - performance electric motor. This motor is designed to operate efficiently underwater, providing the necessary power to drive the pump impeller. It is equipped with advanced cooling systems to prevent overheating, even during extended periods of operation. Some models may feature variable - speed drives, allowing operators to adjust the pump's speed according to the material characteristics and the desired flow rate.
Impeller Design: The impeller is the heart of the pump, and in the case of a sand dredge pump, it is carefully engineered. It typically has a robust design with a specific number of blades and a particular blade shape. The blades are designed to create a strong centrifugal force, which is essential for lifting and transporting the sand - laden slurry. The impeller's geometry is optimized to minimize wear and tear, especially when handling abrasive materials like sand.
Sealing Mechanism: To prevent water from entering the motor and electrical components, a reliable sealing mechanism is crucial. High - quality mechanical seals are used, which are designed to withstand the pressure and harsh conditions of the underwater environment. These seals ensure that the pump can operate safely and efficiently without the risk of electrical short - circuits or component damage due to water ingress.
High Chrome Construction: The term "high chrome" refers to the use of materials with a high chromium content in the pump's critical components, such as the impeller, the pump casing, and the wear rings. Chromium is added to the metal alloy to enhance its hardness, wear resistance, and corrosion resistance. High chrome materials are highly resistant to the abrasive action of sand and other hard particles in the slurry. This means that the pump can maintain its performance over a longer period, even when operating in tough conditions. For example, the impeller made of high chrome material can withstand the constant impact and friction of sand particles, reducing the need for frequent replacements.
Other Durable Materials: In addition to high chrome components, other parts of the pump may be made of materials like stainless steel or high - strength plastics. Stainless steel is used for parts that require high strength and corrosion resistance, such as the shaft and the mounting brackets. High - strength plastics are sometimes employed for non - critical components to reduce weight and cost while maintaining sufficient durability.
Hydraulic Efficiency: The electric submersible sand dredge pump is designed to achieve high hydraulic efficiency. This is determined by factors such as the impeller design, the pump casing shape, and the flow characteristics. A well - designed pump can convert a large percentage of the electrical energy input into hydraulic energy, which is used to move the slurry. By minimizing energy losses due to friction, turbulence, and other factors, the pump can operate more efficiently, reducing energy consumption and operating costs.
Overall System Efficiency: The efficiency of the pump is also affected by the overall system in which it operates. This includes factors such as the length and diameter of the suction and discharge pipes, the elevation difference between the source and the discharge point, and the type of material being pumped. By optimizing the entire system, such as using smooth - walled pipes and reducing unnecessary bends, the overall efficiency of the electric submersible sand dredge pump can be maximized.
Ponds and Lakes: In residential and commercial ponds, as well as small lakes, the portable submersible suction dredger is ideal for removing accumulated sediment. Over time, sediment builds up at the bottom, reducing the water depth and affecting the water quality. The dredger can be easily lowered into the water and maneuvered around to clean the entire bottom area. It can also be used to remove aquatic weeds and other debris, helping to maintain a healthy ecosystem in the water body.
Canals and Ditches: Narrow canals and ditches are common in agricultural areas and urban drainage systems. These waterways often become clogged with sediment, leaves, and other debris, reducing their effectiveness in water management. The compact size of the portable submersible suction dredger allows it to access these tight spaces and clear the blockages, ensuring proper water flow and preventing flooding.
Small - Scale Construction Sites: On construction sites, there may be a need to excavate small areas of sediment or remove debris from water - filled trenches. The portable submersible suction dredger can be quickly deployed to perform these tasks, eliminating the need for larger and more expensive equipment. It can also be used to pump out water from construction pits, enabling work to continue in a dry environment.
Mining Exploration: In the early stages of mining exploration, especially in small - scale or remote mining sites, the portable submersible suction dredger can be used to sample sediment and extract valuable minerals. It can be used in rivers, streams, or small ponds near the mining site to collect samples for analysis, helping miners determine the potential of the area.
Shrimp and Fish Farms: In aquaculture facilities, such as shrimp and fish farms, the water quality needs to be maintained. The portable submersible suction dredger can be used to remove waste products, uneaten feed, and excess sediment from the bottom of the ponds. This helps to improve the water quality, reduce the risk of diseases, and enhance the growth and survival of the aquatic organisms.
The electric submersible pump dredger offers significant energy - efficiency advantages. Electric motors are generally more efficient than internal combustion engines, converting a higher percentage of electrical energy into mechanical energy. This means that for the same amount of work, an electric submersible pump dredger consumes less energy. Additionally, the use of variable - speed drives allows for further energy savings by adjusting the pump's speed according to the actual workload. This not only reduces operating costs but also has a lower environmental impact, as it results in reduced energy consumption and greenhouse gas emissions.
Compared to dredgers powered by diesel engines, electric submersible pump dredgers operate much more quietly. This is a major advantage, especially in urban areas or near residential communities. The low - noise operation allows for dredging work to be carried out without causing excessive disturbance to the surrounding environment. It also makes it possible to operate the dredger during nighttime hours in some cases, which can be beneficial for projects with tight deadlines or where daytime access is restricted.
Electric submersible pump dredgers have a relatively simple design, which makes maintenance easier. The electric motor has fewer moving parts compared to an internal combustion engine, reducing the likelihood of mechanical failures. Additionally, the modular design of many electric submersible pump dredgers allows for easy access to components for inspection, cleaning, and replacement. This simplicity and ease of maintenance result in less downtime, as repairs can be carried out more quickly and efficiently.
With the use of advanced control systems, electric submersible pump dredgers offer precise control over their operation. Operators can easily adjust parameters such as the pump speed, the suction power, and the discharge flow rate. This level of control is crucial for handling different types of materials and for ensuring that the dredging work is carried out accurately. For example, when dealing with delicate sediment in an environmental restoration project, the operator can fine - tune the settings to minimize disturbance to the surrounding ecosystem.
Inspect the Pump: Before starting the pump, carefully inspect it for any signs of damage, such as cracks in the casing, loose connections, or worn - out seals. Check the high chrome components, especially the impeller, for any signs of wear or erosion. Ensure that all bolts and nuts are tightened properly.
Check the Electrical System: Verify that the electrical connections are secure and that the power supply is of the correct voltage and frequency. Inspect the electrical cables for any damage or fraying. Use a multimeter to check the insulation resistance of the motor to ensure that it is within the acceptable range.
Fill with Lubricant: If the pump has any lubricated components, such as the bearings, make sure to fill them with the recommended lubricant. Check the lubricant level regularly and top it up as needed.
Submerge the Pump: Lower the high chrome electric submersible dredge pump into the water body, ensuring that it is fully submerged to the recommended depth. Make sure that the suction head is positioned correctly to draw in the material efficiently.
Power On: Once the pump is in place, turn on the power supply. If the pump is equipped with a variable - speed drive, start it at a low speed initially and gradually increase the speed as the pump warms up and the material starts to flow. Monitor the pump's performance closely during the startup phase, checking for any abnormal vibrations, noises, or changes in the flow rate.
Monitor Performance: Continuously monitor the pump's performance during operation. Keep an eye on the pressure gauges, flow meters, and electrical meters to ensure that everything is within the normal operating range. Adjust the pump's speed or other parameters as needed to maintain optimal performance. For example, if the flow rate decreases, you may need to increase the pump speed or check for blockages in the suction or discharge pipes.
Handle Material Changes: If the type or consistency of the material being pumped changes, be prepared to adjust the pump's operation accordingly. For instance, if the sand becomes more abrasive or the slurry becomes thicker, you may need to increase the suction power or reduce the pump speed to prevent damage to the pump components.
Reduce Speed: Before shutting down the pump, gradually reduce the speed to a minimum. This helps to prevent any sudden pressure surges or damage to the pump.
Turn Off Power: Once the pump has slowed down, turn off the power supply. Lift the pump out of the water and drain any remaining water or slurry from the pump and the pipes. Store the pump in a dry, protected area to prevent corrosion and damage.
The primary reason for designing a water jet in sand suction is to enhance the suction power. When sand is present in a water body, it can sometimes be compacted or difficult to mobilize. The water jet creates a high - velocity stream of water that impacts the sand, breaking it up and loosening it from the bottom. This makes it easier for the suction pump to draw in the sand - laden slurry. The water jet acts like a "pre - treatment" mechanism, increasing the efficiency of the sand suction process. For example, in a riverbed where sand has accumulated over time, the water jet can quickly dislodge the sand, allowing the suction dredger to remove it more effectively.
The water jet also helps to improve the flow of the material through the suction system. Sand particles, especially when they are dry or tightly packed, can cause blockages in the suction pipe or impede the flow of the slurry. By injecting a high - pressure water jet into the suction area, the sand particles are suspended in the water more evenly, reducing the likelihood of clogging. The water jet creates a turbulent flow, which keeps the sand particles in motion and ensures a continuous and smooth flow of the slurry through the pump and the pipes. This is particularly important when dealing with large volumes of sand or when the sand has a high density.
Designing a water jet for sand suction adds versatility to the dredging operation. It allows the equipment to handle a wider range of sand conditions, from fine, loose sand to coarse, compacted sand. In different water bodies, the characteristics of the sand can vary significantly. The water jet can be adjusted according to these conditions. For instance, in a beach nourishment project, where the sand may be wet and heavy, a stronger water jet can be used to break up the sand and facilitate suction. In a river with lighter, finer sand, a less powerful water jet may be sufficient. This adaptability makes the sand suction process more reliable and efficient across various environments.
In conclusion, the portable submersible suction dredger 250mm and the electric submersible pump dredger offer a range of features and advantages that make them valuable assets in various industries. Understanding their design, operation, and applications can help users make the most of these compact yet powerful dredging solutions.
The portable submersible suction dredger 250mm is engineered with a focus on mobility and ease of use. Its compact size makes it a game - changer for projects where traditional large - scale dredgers are impractical. The entire unit is designed to be lightweight, allowing for easy transportation and quick deployment. This is achieved through the use of high - strength, yet lightweight materials in its construction. For example, the outer casing may be made of advanced composite materials that offer excellent corrosion resistance while reducing the overall weight. This design feature enables a single operator or a small team to move the dredger to different locations, whether it's a small pond, a narrow canal, or a remote construction site.
One of the most distinctive design elements is its submersible nature. The dredger can be fully submerged into the water body, getting close to the source of the sediment or material to be removed. This eliminates the need for complex and bulky above - water structures, reducing the footprint of the equipment. The submersible design also allows for more efficient suction, as the pump can directly draw in the slurry without having to overcome significant vertical distances. Additionally, the submersible components are sealed to prevent water ingress, ensuring the longevity and reliability of the electrical and mechanical parts.
The 250mmdischarge diameter strikes a perfect balance between suction power and portability. A larger diameter would increase the volume of material that can be processed but would also add to the size and weight of the dredger. The 250mm size is sufficient to handle a substantial amount of slurry, making it suitable for a wide range of applications. It can efficiently draw in sediment, sand, and other debris, even in relatively viscous or dense mixtures. The suction pipe is designed with a smooth interior surface to minimize friction and ensure a continuous flow of the slurry.
The portable submersible suction dredger often features a modular design. This means that different components, such as the suction head, the pump, and the power unit, can be easily detached and replaced. For instance, if the suction head becomes worn out or damaged, it can be quickly swapped with a new one without having to disassemble the entire dredger. This modularity not only simplifies maintenance but also allows for customization. Users can choose to upgrade certain components based on the specific requirements of their projects, such as installing a more powerful pump for tougher materials or a specialized suction head for delicate environments.
Parameter | Value/Description |
Model | IT-ESPD 250 |
Power Source | 3-phase AC, 380V/50Hz (customizable to 460V/60Hz) |
Motor Power | 90-220 kW |
Max Flow Rate | 500-900 m³/h (adjustable via VFD) |
Max Head | 20-90 meters (115 ft) |
Submersible Depth | Up to 20 meters (66 ft) |
Solid Handling | Up to 50% solids by weight; Max particle size: 50 mm |
Impeller Type | Closed-type, high-chrome alloy (Cr26) with 3–6 vanes |
Discharge Connection | Flanged 250 mm (DIN/ANSI standard) |
High - Performance Motor: The electric submersible sand dredge pump is powered by a high - performance electric motor. This motor is designed to operate efficiently underwater, providing the necessary power to drive the pump impeller. It is equipped with advanced cooling systems to prevent overheating, even during extended periods of operation. Some models may feature variable - speed drives, allowing operators to adjust the pump's speed according to the material characteristics and the desired flow rate.
Impeller Design: The impeller is the heart of the pump, and in the case of a sand dredge pump, it is carefully engineered. It typically has a robust design with a specific number of blades and a particular blade shape. The blades are designed to create a strong centrifugal force, which is essential for lifting and transporting the sand - laden slurry. The impeller's geometry is optimized to minimize wear and tear, especially when handling abrasive materials like sand.
Sealing Mechanism: To prevent water from entering the motor and electrical components, a reliable sealing mechanism is crucial. High - quality mechanical seals are used, which are designed to withstand the pressure and harsh conditions of the underwater environment. These seals ensure that the pump can operate safely and efficiently without the risk of electrical short - circuits or component damage due to water ingress.
High Chrome Construction: The term "high chrome" refers to the use of materials with a high chromium content in the pump's critical components, such as the impeller, the pump casing, and the wear rings. Chromium is added to the metal alloy to enhance its hardness, wear resistance, and corrosion resistance. High chrome materials are highly resistant to the abrasive action of sand and other hard particles in the slurry. This means that the pump can maintain its performance over a longer period, even when operating in tough conditions. For example, the impeller made of high chrome material can withstand the constant impact and friction of sand particles, reducing the need for frequent replacements.
Other Durable Materials: In addition to high chrome components, other parts of the pump may be made of materials like stainless steel or high - strength plastics. Stainless steel is used for parts that require high strength and corrosion resistance, such as the shaft and the mounting brackets. High - strength plastics are sometimes employed for non - critical components to reduce weight and cost while maintaining sufficient durability.
Hydraulic Efficiency: The electric submersible sand dredge pump is designed to achieve high hydraulic efficiency. This is determined by factors such as the impeller design, the pump casing shape, and the flow characteristics. A well - designed pump can convert a large percentage of the electrical energy input into hydraulic energy, which is used to move the slurry. By minimizing energy losses due to friction, turbulence, and other factors, the pump can operate more efficiently, reducing energy consumption and operating costs.
Overall System Efficiency: The efficiency of the pump is also affected by the overall system in which it operates. This includes factors such as the length and diameter of the suction and discharge pipes, the elevation difference between the source and the discharge point, and the type of material being pumped. By optimizing the entire system, such as using smooth - walled pipes and reducing unnecessary bends, the overall efficiency of the electric submersible sand dredge pump can be maximized.
Ponds and Lakes: In residential and commercial ponds, as well as small lakes, the portable submersible suction dredger is ideal for removing accumulated sediment. Over time, sediment builds up at the bottom, reducing the water depth and affecting the water quality. The dredger can be easily lowered into the water and maneuvered around to clean the entire bottom area. It can also be used to remove aquatic weeds and other debris, helping to maintain a healthy ecosystem in the water body.
Canals and Ditches: Narrow canals and ditches are common in agricultural areas and urban drainage systems. These waterways often become clogged with sediment, leaves, and other debris, reducing their effectiveness in water management. The compact size of the portable submersible suction dredger allows it to access these tight spaces and clear the blockages, ensuring proper water flow and preventing flooding.
Small - Scale Construction Sites: On construction sites, there may be a need to excavate small areas of sediment or remove debris from water - filled trenches. The portable submersible suction dredger can be quickly deployed to perform these tasks, eliminating the need for larger and more expensive equipment. It can also be used to pump out water from construction pits, enabling work to continue in a dry environment.
Mining Exploration: In the early stages of mining exploration, especially in small - scale or remote mining sites, the portable submersible suction dredger can be used to sample sediment and extract valuable minerals. It can be used in rivers, streams, or small ponds near the mining site to collect samples for analysis, helping miners determine the potential of the area.
Shrimp and Fish Farms: In aquaculture facilities, such as shrimp and fish farms, the water quality needs to be maintained. The portable submersible suction dredger can be used to remove waste products, uneaten feed, and excess sediment from the bottom of the ponds. This helps to improve the water quality, reduce the risk of diseases, and enhance the growth and survival of the aquatic organisms.
The electric submersible pump dredger offers significant energy - efficiency advantages. Electric motors are generally more efficient than internal combustion engines, converting a higher percentage of electrical energy into mechanical energy. This means that for the same amount of work, an electric submersible pump dredger consumes less energy. Additionally, the use of variable - speed drives allows for further energy savings by adjusting the pump's speed according to the actual workload. This not only reduces operating costs but also has a lower environmental impact, as it results in reduced energy consumption and greenhouse gas emissions.
Compared to dredgers powered by diesel engines, electric submersible pump dredgers operate much more quietly. This is a major advantage, especially in urban areas or near residential communities. The low - noise operation allows for dredging work to be carried out without causing excessive disturbance to the surrounding environment. It also makes it possible to operate the dredger during nighttime hours in some cases, which can be beneficial for projects with tight deadlines or where daytime access is restricted.
Electric submersible pump dredgers have a relatively simple design, which makes maintenance easier. The electric motor has fewer moving parts compared to an internal combustion engine, reducing the likelihood of mechanical failures. Additionally, the modular design of many electric submersible pump dredgers allows for easy access to components for inspection, cleaning, and replacement. This simplicity and ease of maintenance result in less downtime, as repairs can be carried out more quickly and efficiently.
With the use of advanced control systems, electric submersible pump dredgers offer precise control over their operation. Operators can easily adjust parameters such as the pump speed, the suction power, and the discharge flow rate. This level of control is crucial for handling different types of materials and for ensuring that the dredging work is carried out accurately. For example, when dealing with delicate sediment in an environmental restoration project, the operator can fine - tune the settings to minimize disturbance to the surrounding ecosystem.
Inspect the Pump: Before starting the pump, carefully inspect it for any signs of damage, such as cracks in the casing, loose connections, or worn - out seals. Check the high chrome components, especially the impeller, for any signs of wear or erosion. Ensure that all bolts and nuts are tightened properly.
Check the Electrical System: Verify that the electrical connections are secure and that the power supply is of the correct voltage and frequency. Inspect the electrical cables for any damage or fraying. Use a multimeter to check the insulation resistance of the motor to ensure that it is within the acceptable range.
Fill with Lubricant: If the pump has any lubricated components, such as the bearings, make sure to fill them with the recommended lubricant. Check the lubricant level regularly and top it up as needed.
Submerge the Pump: Lower the high chrome electric submersible dredge pump into the water body, ensuring that it is fully submerged to the recommended depth. Make sure that the suction head is positioned correctly to draw in the material efficiently.
Power On: Once the pump is in place, turn on the power supply. If the pump is equipped with a variable - speed drive, start it at a low speed initially and gradually increase the speed as the pump warms up and the material starts to flow. Monitor the pump's performance closely during the startup phase, checking for any abnormal vibrations, noises, or changes in the flow rate.
Monitor Performance: Continuously monitor the pump's performance during operation. Keep an eye on the pressure gauges, flow meters, and electrical meters to ensure that everything is within the normal operating range. Adjust the pump's speed or other parameters as needed to maintain optimal performance. For example, if the flow rate decreases, you may need to increase the pump speed or check for blockages in the suction or discharge pipes.
Handle Material Changes: If the type or consistency of the material being pumped changes, be prepared to adjust the pump's operation accordingly. For instance, if the sand becomes more abrasive or the slurry becomes thicker, you may need to increase the suction power or reduce the pump speed to prevent damage to the pump components.
Reduce Speed: Before shutting down the pump, gradually reduce the speed to a minimum. This helps to prevent any sudden pressure surges or damage to the pump.
Turn Off Power: Once the pump has slowed down, turn off the power supply. Lift the pump out of the water and drain any remaining water or slurry from the pump and the pipes. Store the pump in a dry, protected area to prevent corrosion and damage.
The primary reason for designing a water jet in sand suction is to enhance the suction power. When sand is present in a water body, it can sometimes be compacted or difficult to mobilize. The water jet creates a high - velocity stream of water that impacts the sand, breaking it up and loosening it from the bottom. This makes it easier for the suction pump to draw in the sand - laden slurry. The water jet acts like a "pre - treatment" mechanism, increasing the efficiency of the sand suction process. For example, in a riverbed where sand has accumulated over time, the water jet can quickly dislodge the sand, allowing the suction dredger to remove it more effectively.
The water jet also helps to improve the flow of the material through the suction system. Sand particles, especially when they are dry or tightly packed, can cause blockages in the suction pipe or impede the flow of the slurry. By injecting a high - pressure water jet into the suction area, the sand particles are suspended in the water more evenly, reducing the likelihood of clogging. The water jet creates a turbulent flow, which keeps the sand particles in motion and ensures a continuous and smooth flow of the slurry through the pump and the pipes. This is particularly important when dealing with large volumes of sand or when the sand has a high density.
Designing a water jet for sand suction adds versatility to the dredging operation. It allows the equipment to handle a wider range of sand conditions, from fine, loose sand to coarse, compacted sand. In different water bodies, the characteristics of the sand can vary significantly. The water jet can be adjusted according to these conditions. For instance, in a beach nourishment project, where the sand may be wet and heavy, a stronger water jet can be used to break up the sand and facilitate suction. In a river with lighter, finer sand, a less powerful water jet may be sufficient. This adaptability makes the sand suction process more reliable and efficient across various environments.
In conclusion, the portable submersible suction dredger 250mm and the electric submersible pump dredger offer a range of features and advantages that make them valuable assets in various industries. Understanding their design, operation, and applications can help users make the most of these compact yet powerful dredging solutions.
