Top 5 ways for unloading sand by dreding pumps
Sand transporters usually transport the sediment mixture or sand from river dredging, construction sites, and mineral extraction through flat-bottomed boats, and then unload the mud and blow it to the landfill area thrriver dredging, construction sites, and mineral extraction through flat-bottomed boats, and then unload the mud and blow it to the landfill area through a sand unloading pump or an excavator. . How to unload sediment from a sediment transport ship? How to choose a suitable unloading pump and sand unloading pump for operation? Can long-distance transport of sediment be achieved? What is the approximate cost of unloading sediment? The Ocean Pump Technology Department has passed many years of Based on the accumulation of construction plan design, this article has been specially compiled for your reference.
1. Single-head blowing construction plan
Taian sand pump
Single-head blowing is the most widely used method of unloading sediment in Jiangsu, Zhejiang and Shanghai China . Build slurry unloading pump ship and place the 350PNS-35 marine mud unloading pump unit and CH350 high-pressure water pump unit in the pump chamber, equipped with Weichai 6170 Type 450 horsepower and 320 horsepower marine diesel engines, the mud suction pipe and high-pressure water pipe are controlled by a hydraulic arm and placed in the sediment bin. Through high-pressure water impact, the sediment mixture is sucked into the sand suction pipe, and then through the mud unloading pump to achieve 1000 -Long-distance transportation mission of 1500 meters.
Usually, the unloading work of a 300-m3 dredger can be completed in about 40 minutes. When each 300 m3 ship unloads sediment, the consumption of diesel is about 40 liters. The pipeline uses an inner diameter of 350 and has an approved specific gravity of about 1.15. When transported 1500 meters, the flow rate of the solid-liquid mixture is 3.46 m/s.https://www.youtube.com/shorts/SKZtYIVEcdU
Single-head blowing is suitable for the loading and unloading of small and medium-sized sediment transporting ships, which greatly reduces the use of manual labor. One vessel only needs two people to operate it. This construction plan is relatively mature, and one set of equipment can realize mud unloading, A solution for transporting sediment over long distances, and can transport sediment to sites dozens of kilometers away in series.，pls check this youtube ：https://www.youtube.com/shorts/InMBlOunFC8
2. Vertical sediment pump solution for unloading sediment Taian sand pump
Vertical sand unloading pumps are most widely used on sand blowing ships. The vertical sand unloading pump unit is hoisted on an electric hoist. After the sand transporting ship approaches, the vertical sand unloading pump is dropped to the sand surface for operation, mainly using high pressure. The water impact rushes the sand-water mixture to the pump port of the vertical sand unloading pump, and then uses strong suction to transport the slurry out. Usually, the number of pump units is flexibly selected according to different operating requirements, and the driving method is a motor.
The biggest advantage of this method of unloading sediment is high concentration and high efficiency. The disadvantage is that more sand unloading pumps are used. Vertical sand unloading pumps are medium-speed machines that wear out quickly and have low lift. If long-distance transportation is required, If required, a relay pump can be added to the ship. The vertical sand unloading pump is first connected in parallel and then in series to the inlet of the relay pump, and then transported out. If it is at the dockside, some customers will also build a sedimentation tank, and then use a horizontal pump to self-prime and blow the sediment in the sedimentation tank to a distance of one thousand meters.
According to different construction requirements, users usually choose the 6PNSL and 8PNSL pump models of Ocean Pump Industry. The sediment discharge capacity of each unit is about 50-100 cubic meters per hour. From 2015 to 2018, sand blowing in Zhoushan City, Zhejiang Province In the reclamation project, each sand blowing ship is equipped with 10 8PNSL type vertical sand unloVertical sand unloading pumps are most widely used on sand blowing ships. The vertical sand unloading pump unit is hoisted on an electric hoist. After the sand transporting ship approaches, the vertical sand unloading pump is dropped to the sand surface for operation, mainly using high pressure. The water impact rushes the sand-water mixture to the pump port of the vertical sand unloading pump, and then uses strong suction to transport the slurry out. Usually, the number of pump units is flexibly selected according to different operating requirements, and the driving method is a motor.
The biggest advantage of this method of unloading sediment is high concentration and high efficiency. The disadvantage is that more sand unloading pumps are used. Vertical sand unloading pumps are medium-speed machines that wear out quickly and have low lift. If long-distance transportation is required, If required, a relay pump can be added to the ship. The vertical sand unloading pump is first connected in parallel and then in series to the inlet of the relay pump, and then transported out. If it is at the dockside, some customers will also build a sedimentation tank, and then use a horizontal pump to self-prime and blow the sediment in the sedimentation tank to a distance of one thousand meters.
According to different construction requirements, users usually choose the 6PNSL and 8PNSL pump models of Ocean Pump Industry. The sediment discharge capacity of each unit is about 50-100 cubic meters per hour.
The biggest advantage of this method of unloading sediment is high concentration and high efficiency. The disadvantage is that more sand unloading pumps are used. Vertical sand unloading pumps are medium-speed machines that wear out quickly and have low lift. If long-distance transportation is required, If required, a relay pump can be added to the ship. The vertical sand unloading pump is first connected in parallel and then in series to the inlet of the relay pump, and then transported out. If it is at the dockside, some customers will also build a sedimentation tank, and then use a horizontal pump to self-prime and blow the sediment in the sedimentation tank to a distance of one thousand meters.
According to different construction requirements, users usually choose the 6PNSL and 8PNSL pump models of Ocean Pump Industry. The sediment discharge capacity of each unit is about 50-100 cubic meters per hour. From 2015 to 2018, sand blowing in Zhoushan City, Zhejiang Province In the reclamation project, each sand blowing ship is equipped with 10 8PNSL type vertical sand unloading pumps. A 3,000 m3 ship can blow it in about 3 hours. A 400GN-50 marine relay pump is installed on the ship, which can transport 1,000 m3 of sand per hour over a distance of 1,500 m. Meter construction requirements, there is also a 600kw generator set and two high-pressure water pumps produced by Ocean Pump Industry on board. Under the premise that the inner diameter of the exhaust pipe is 400mm and the specific gravity is about 1.2, the calculated pressure drop is 5.45 bar and the flow rate is 4.41 m/s.
sand blowing in Zhoushan City, Zhejiang Province In the reclamation project, each sand blowing ship is equipped with 10 8PNSL type vertical sand unloading pumps. A 3,000 m3 ship can blow it in about 3 hours. A 400GN-50 marine relay pump is installed on the ship, which can transport 1,000 m3 of sand per hour over a distance of 1,500 m. Meter construction requirements, there is also a 600kw generator set and two high-pressure water pumps produced by Ocean Pump Industry on board. Under the premise that the inner diameter of the exhaust pipe is 400mm and the specific gravity is about 1.2, the calculated pressure drop is 5.45 bar and the flow rate is 4.41 m/s.
3. Excavator (or grab) combined with marine sediment pump to unload mud Taian sand pump whatsapp ：+86 18562293319
in some small flat-bottomed sand transporting ships, some mud is very sticky and cannot be flushed away by ordinary water guns. Many customers will choose to use an excavator or grab to dig out the sand, and then design a funnel to pour the sand into the funnel. Combined with high-pressure water impact and a vacuum screen, a mesh plate or grille is designed to keep stones or large particles out, and then a horizontal mud unloading pump is added to the bottom of the funnel to extract and transport sediment on board. , marine sludge unloading pumps with different lifts can be selected according to different transportation conditions.
A user in Zhongshan, Guangdong, uses this method, using two excavators to work alternately, choosing a 400GN-50 equipped with an 8170 diesel engine, and then equipped with a 14-inch high-pressure water pump. The dry mud extraction volume per hour is 600 cubic meters, and the discharge distance 1000 meters, and the inner diameter of the exhaust pipe is 400mm. The fuel consumption of the two units per hour is about 110 liters. Under the premise that the specific gravity is about 1.2, the calculated pressure drop is 3.63 bar and the flow rate is 4.41 m/s.
4. Methods of unloading sand by open-bottom boats and belt boats Taian sand pump Email ： [email protected]
Open-bottom boats and belt boats usually have a self-unloading function, so you don’t have to worry about the size of the boat. You just need to choose different construction plans according to the output. In an open-bottomed boat, the bottom plate of the boat is pulled up through iron chains. After it is transported to the river, the hinge is loosened and the bottom of the boat is opened, so that the sediment in the cabin leaks into the river, so that the sediment transporting boat can be driven away. For sand loading operations, a jet-type sand pumping boat is used to absorb sand. The advantage of this method of operation is that the sand unloading is not limited by time and does not require close cooperation. A jet-type sand pumping boat can pump multiple sands at the same time. Silt in an open bottom boat. A user in Hepu, Guangxi uses three 100-square-meter open-bottom boats and two 10-inch jet boats for cyclic operation. The open-bottom boats are self-priming and self-unloading. The sand pumping capacity is about 80 cubic meters per hour. After unloading to the bottom of the river, A 10-inch jet boat can extract 100 cubic meters of sand from the bottom of the water in about an hour. Compared with other methods, it is less expensive and more flexible.
The belt boat is even simpler. The customer's sand boat has a self-unloading function. If the sand on the belt boat needs to be transported over a long distance, it needs to use a funnel. If the belt boat cannot dock due to the draft, a funnel boat needs to be built to bring the ocean pump industry to The marine sand unloading pump is placed at the bottom of the funnel and is diluted and transported out with the help of a high-pressure water gun. If the belt boat can dock, build a funnel at the dock, and then use a marine sand unloading pump to transport the sediment in the same way.
The reclamation project of Hong Kong Kai Tak Airport uses a belt boat and a funnel. After the large belt boat docks, a set of hydraulic gates are added at the bottom of the funnel to control the amount of sand. Then the high-pressure water mixed with the sand enters the ZS350 large sand unloading pump. Among them, the ZS350 sand unloading pump is equipped with a Weichai 8170 1000 horsepower 1500 rpm diesel engine. The sediment transportation distance is 1000 meters. The pipeline uses ultra-high molecular polyethylene pipes. The sand unloading capacity is about 400 cubic meters per hour. The inner diameter of the pipeline is 350mm, the calculated pressure drop is 3.58 bar, and the flow rate is 4.03 m/s.
5. Sand unloading method by sand transport ship with pump chamber Taian sand pump WhatsApp ：+86 18562293319
The bottom chamber of some sand transport ships has a special marine sand unloading pump chamber, which is also controlled by a hydraulic jack. When the sand ship docks, the sand discharge pipeline is connected, and then the bottom is slowly opened, and clean water is also filled through the high-pressure water pump, and then the The ship uses a sand unloading pump to transport sand to the shore.
A user in Shantou, Guangdong, built a large self-unloading sand ship using a 500GN-60 large-scale marine sand unloading pump. This method is used to unload sand. It can transport 1,000 cubic meters of pure sand per hour with a transportation distance of 2,500 meters. It is equipped with a Cummins 2,400-horsepower diesel engine and Model 1260 marine gearbox, the pipe size is 500mm. The calculated pressure drop is 6.21 bar and the flow rate is 4.23 m/s.ough a sand unloading pump or an excavator. . How to unload sediment from a sediment transport ship? How to choose a suitable unloading pump and sand unloading pump for operation? Can long-distance transport of sediment be achieved? What is the approximate cost of unloading sediment? The Ocean Pump Technology Department has passed many years of Based on the accumulation of construction plan design, this article has been specially compiled for your reference.
1. Single-head blowing construction plan
Taian sand pump
Single-head blowing is the most widely used method of unloading sediment in Jiangsu, Zhejiang and Shanghai China . Build slurry unloading pump ship and place the 350PNS-35 marine mud unloading pump unit and CH350 high-pressure water pump unit in the pump chamber, equipped with Weichai 6170 Type 450 horsepower and 320 horsepower marine diesel engines, the mud suction pipe and high-pressure water pipe are controlled by a hydraulic arm and placed in the sediment bin. Through high-pressure water impact, the sediment mixture is sucked into the sand suction pipe, and then through the mud unloading pump to achieve 1000 -Long-distance transportation mission of 1500 meters.
Usually, the unloading work of a 300-m3 dredger can be completed in about 40 minutes. When each 300 m3 ship unloads sediment, the consumption of diesel is about 40 liters. The pipeline uses an inner diameter of 350 and has an approved specific gravity of about 1.15. When transported 1500 meters, the flow rate of the solid-liquid mixture is 3.46 m/s.https://www.youtube.com/shorts/SKZtYIVEcdU
Single-head blowing is suitable for the loading and unloading of small and medium-sized sediment transporting ships, which greatly reduces the use of manual labor. One vessel only needs two people to operate it. This construction plan is relatively mature, and one set of equipment can realize mud unloading, A solution for transporting sediment over long distances, and can transport sediment to sites dozens of kilometers away in series.，pls check this youtube ：https://www.youtube.com/shorts/InMBlOunFC8
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2. Vertical sediment pump solution for unloading sediment Taian sand pump
Vertical sand unloading pumps are most widely used on sand blowing ships. The vertical sand unloading pump unit is hoisted on an electric hoist. After the sand transporting ship approaches, the vertical sand unloading pump is dropped to the sand surface for operation, mainly using high pressure. The water impact rushes the sand-water mixture to the pump port of the vertical sand unloading pump, and then uses strong suction to transport the slurry out. Usually, the number of pump units is flexibly selected according to different operating requirements, and the driving method is a motor.
The biggest advantage of this method of unloading sediment is high concentration and high efficiency. The disadvantage is that more sand unloading pumps are used. Vertical sand unloading pumps are medium-speed machines that wear out quickly and have low lift. If long-distance transportation is required, If required, a relay pump can be added to the ship. The vertical sand unloading pump is first connected in parallel and then in series to the inlet of the relay pump, and then transported out. If it is at the dockside, some customers will also build a sedimentation tank, and then use a horizontal pump to self-prime and blow the sediment in the sedimentation tank to a distance of one thousand meters.
According to different construction requirements, users usually choose the 6PNSL and 8PNSL pump models of Ocean Pump Industry. The sediment discharge capacity of each unit is about 50-100 cubic meters per hour. From 2015 to 2018, sand blowing in Zhoushan City, Zhejiang Province In the reclamation project, each sand blowing ship is equipped with 10 8PNSL type vertical sand unloVertical sand unloading pumps are most widely used on sand blowing ships. The vertical sand unloading pump unit is hoisted on an electric hoist. After the sand transporting ship approaches, the vertical sand unloading pump is dropped to the sand surface for operation, mainly using high pressure. The water impact rushes the sand-water mixture to the pump port of the vertical sand unloading pump, and then uses strong suction to transport the slurry out. Usually, the number of pump units is flexibly selected according to different operating requirements, and the driving method is a motor.
The biggest advantage of this method of unloading sediment is high concentration and high efficiency. The disadvantage is that more sand unloading pumps are used. Vertical sand unloading pumps are medium-speed machines that wear out quickly and have low lift. If long-distance transportation is required, If required, a relay pump can be added to the ship. The vertical sand unloading pump is first connected in parallel and then in series to the inlet of the relay pump, and then transported out. If it is at the dockside, some customers will also build a sedimentation tank, and then use a horizontal pump to self-prime and blow the sediment in the sedimentation tank to a distance of one thousand meters.
According to different construction requirements, users usually choose the 6PNSL and 8PNSL pump models of Ocean Pump Industry. The sediment discharge capacity of each unit is about 50-100 cubic meters per hour.
The biggest advantage of this method of unloading sediment is high concentration and high efficiency. The disadvantage is that more sand unloading pumps are used. Vertical sand unloading pumps are medium-speed machines that wear out quickly and have low lift. If long-distance transportation is required, If required, a relay pump can be added to the ship. The vertical sand unloading pump is first connected in parallel and then in series to the inlet of the relay pump, and then transported out. If it is at the dockside, some customers will also build a sedimentation tank, and then use a horizontal pump to self-prime and blow the sediment in the sedimentation tank to a distance of one thousand meters.
According to different construction requirements, users usually choose the 6PNSL and 8PNSL pump models of Ocean Pump Industry. The sediment discharge capacity of each unit is about 50-100 cubic meters per hour. From 2015 to 2018, sand blowing in Zhoushan City, Zhejiang Province In the reclamation project, each sand blowing ship is equipped with 10 8PNSL type vertical sand unloading pumps. A 3,000 m3 ship can blow it in about 3 hours. A 400GN-50 marine relay pump is installed on the ship, which can transport 1,000 m3 of sand per hour over a distance of 1,500 m. Meter construction requirements, there is also a 600kw generator set and two high-pressure water pumps produced by Ocean Pump Industry on board. Under the premise that the inner diameter of the exhaust pipe is 400mm and the specific gravity is about 1.2, the calculated pressure drop is 5.45 bar and the flow rate is 4.41 m/s.
sand blowing in Zhoushan City, Zhejiang Province In the reclamation project, each sand blowing ship is equipped with 10 8PNSL type vertical sand unloading pumps. A 3,000 m3 ship can blow it in about 3 hours. A 400GN-50 marine relay pump is installed on the ship, which can transport 1,000 m3 of sand per hour over a distance of 1,500 m. Meter construction requirements, there is also a 600kw generator set and two high-pressure water pumps produced by Ocean Pump Industry on board. Under the premise that the inner diameter of the exhaust pipe is 400mm and the specific gravity is about 1.2, the calculated pressure drop is 5.45 bar and the flow rate is 4.41 m/s.
3. Excavator (or grab) combined with marine sediment pump to unload mud Taian sand pump whatsapp ：+86 18562293319
in some small flat-bottomed sand transporting ships, some mud is very sticky and cannot be flushed away by ordinary water guns. Many customers will choose to use an excavator or grab to dig out the sand, and then design a funnel to pour the sand into the funnel. Combined with high-pressure water impact and a vacuum screen, a mesh plate or grille is designed to keep stones or large particles out, and then a horizontal mud unloading pump is added to the bottom of the funnel to extract and transport sediment on board. , marine sludge unloading pumps with different lifts can be selected according to different transportation conditions.
A user in Zhongshan, Guangdong, uses this method, using two excavators to work alternately, choosing a 400GN-50 equipped with an 8170 diesel engine, and then equipped with a 14-inch high-pressure water pump. The dry mud extraction volume per hour is 600 cubic meters, and the discharge distance 1000 meters, and the inner diameter of the exhaust pipe is 400mm. The fuel consumption of the two units per hour is about 110 liters. Under the premise that the specific gravity is about 1.2, the calculated pressure drop is 3.63 bar and the flow rate is 4.41 m/s.
4. Methods of unloading sand by open-bottom boats and belt boats Taian sand pump Email ： [email protected]
Open-bottom boats and belt boats usually have a self-unloading function, so you don’t have to worry about the size of the boat. You just need to choose different construction plans according to the output. In an open-bottomed boat, the bottom plate of the boat is pulled up through iron chains. After it is transported to the river, the hinge is loosened and the bottom of the boat is opened, so that the sediment in the cabin leaks into the river, so that the sediment transporting boat can be driven away. For sand loading operations, a jet-type sand pumping boat is used to absorb sand. The advantage of this method of operation is that the sand unloading is not limited by time and does not require close cooperation. A jet-type sand pumping boat can pump multiple sands at the same time. Silt in an open bottom boat. A user in Hepu, Guangxi uses three 100-square-meter open-bottom boats and two 10-inch jet boats for cyclic operation. The open-bottom boats are self-priming and self-unloading. The sand pumping capacity is about 80 cubic meters per hour. After unloading to the bottom of the river, A 10-inch jet boat can extract 100 cubic meters of sand from the bottom of the water in about an hour. Compared with other methods, it is less expensive and more flexible.
The belt boat is even simpler. The customer's sand boat has a self-unloading function. If the sand on the belt boat needs to be transported over a long distance, it needs to use a funnel. If the belt boat cannot dock due to the draft, a funnel boat needs to be built to bring the ocean pump industry to The marine sand unloading pump is placed at the bottom of the funnel and is diluted and transported out with the help of a high-pressure water gun. If the belt boat can dock, build a funnel at the dock, and then use a marine sand unloading pump to transport the sediment in the same way.
The reclamation project of Hong Kong Kai Tak Airport uses a belt boat and a funnel. After the large belt boat docks, a set of hydraulic gates are added at the bottom of the funnel to control the amount of sand. Then the high-pressure water mixed with the sand enters the ZS350 large sand unloading pump. Among them, the ZS350 sand unloading pump is equipped with a Weichai 8170 1000 horsepower 1500 rpm diesel engine. The sediment transportation distance is 1000 meters. The pipeline uses ultra-high molecular polyethylene pipes. The sand unloading capacity is about 400 cubic meters per hour. The inner diameter of the pipeline is 350mm, the calculated pressure drop is 3.58 bar, and the flow rate is 4.03 m/s.
5. Sand unloading method by sand transport ship with pump chamber Taian sand pump WhatsApp ：+86 18562293319
The bottom chamber of some sand transport ships has a special marine sand unloading pump chamber, which is also controlled by a hydraulic jack. When the sand ship docks, the sand discharge pipeline is connected, and then the bottom is slowly opened, and clean water is also filled through the high-pressure water pump, and then the The ship uses a sand unloading pump to transport sand to the shore.
A user in Shantou, Guangdong, built a large self-unloading sand ship using a 500GN-60 large-scale marine sand unloading pump. This method is used to unload sand. It can transport 1,000 cubic meters of pure sand per hour with a transportation distance of 2,500 meters. It is equipped with a Cummins 2,400-horsepower diesel engine and Model 1260 marine gearbox, the pipe size is 500mm. The calculated pressure drop is 6.21 bar and the flow rate is 4.23 m/s.
Summary of sediment unloading methods
Taian sand pump Email ：[email protected]
Unloading sediment has been a problem that has been encountered since the start of shipping. From the past manual transportation to the use of mud unloading pumps and sand unloading pumps, a great leap has been achieved. However, if it can be used flexibly during construction The combination of different pump types often brings twice the result with half the effort. The ocean pump engineering team will formulate different sediment unloading construction plans based on different types of sediment transport ships in different regions. Small ships are relatively flexible and have more choices. The construction of large sediment transport ships is usually a one-step process. It involves the whole body, so you must be careful when choosing and choose a professional team to make plans and formulate construction plans.
More details or inquiry ，welcome contact Doris
Taian ocean pump Co.，ltd
Email ： [email protected]
WhatsApp ： +86 18562293319