500mm Cutter Suction Dredger with 1600m Discharge Distance

500mm long row distance cutter suction dredger for river and lake dredging

product description

A cutter suction dredger's (CSD) suction tube has a cutting mechanism at the suction inlet. The cutting mechanism

loosens the bed material and transports it to the suction mouth. The dredged material is usually sucked up by a

wear-resistant centrifugal pump and discharged either through a pipe line or to a barge. Cutter suction dredgers

are most often used in geological areas consisting of hard surface materials (for example gravel deposits or surface

bedrock) where a standard suction dredger would be ineffective. They can, if sufficiently powerful, be used instead

of underwater blasting.

product parameters

Core components

Cutter Head: Alloy cutters are installed at the front end to break the hard soil layer.

Suction Pipe: Connects the reamer and the mud pump to form a negative pressure to suck the mud-water mixture.

Dredge Pump: Provides power to transport mud to the mud discharge pipe.

Positioning System: Spuds or DP dynamic positioning to achieve precise movement.

Ladder: A liftable structure that supports the reamer and suction pipe.

Main workflow:

Excavation: A powerful auger head is mounted on the front or side of the hull. This huge rotating cutter head (usually

with cutting teeth) is lowered to the bottom of the water and rotates at high speed to cut, stir and crush the bottom

materials such as mud, clay and even soft rock.

Suction: The auger head is usually supported by a auger bridge, and a mud suction pipe is installed inside the bridge.

The suction port of the mud suction pipe is located just behind the auger head. When the auger head loosens the

bottom material,the powerful mud pump (centrifugal pump) on the ship starts to work, generating a strong vacuum

suction, sucking the mixture of water and loosened mud (called "mud") through the mud suction pipe.

Transport: The sucked mud is pressurized and transported through the mud pipe system inside the hull.

Discharge: The mud is finally transported to the designated location through the mud discharge pipe. There are

two main discharge methods:

Direct shore discharge/blowing and filling: The mud is directly transported to the land or shoal area to be filled

through a long mud discharge pipeline (floating pipe + shore pipe) connected to the stern of the ship.

Loading: The mud is discharged into the mud barge (mud transporter) docked next to the dredger, and transported

to the dumping area or filling area by the mud barge.

Main features:

Continuous operation: Excavation, suction, transportation and discharge are carried out continuously with very high

efficiency.

Wide application range: By changing the type of auger head, silt, sand, clay, gravel and even medium-hard weathered

rock can be excavated.

Long transportation distance: The powerful mud pump system can transport mud to several kilometers or even more

than ten kilometers away (even farther through relay pumping stations).

Relatively high excavation accuracy: The excavation depth and flatness can be controlled by adjusting the depth of

the auger bridge and the precise positioning system.

Controllable impact on the environment: Compared with some trailing suction dredgers (which need to open the

bottom to throw mud), the dredger can transport mud and sand to designated locations (such as filling areas)

more accurately through pipelines, reducing the impact on the ecology of the dumping area. Environmentally friendly

 auger heads (such as basket auger) can also significantly reduce the spread of suspended matter.

application
1.Port and waterway construction
Deepwater channel excavation
New port foundation trench excavation
2.Land reclamation
Island construction by blowing (China used the "Tianjing" to build islands and reefs in the South China Sea, blowing

4,500m³ of sand and soil per hour).

3.Environmental governance

Cleaning of polluted sediments (such as dredging of blue algae sediments in Taihu Lake).

River ecological restoration (European Rhine River dredging project).

4.Mining and resource extraction

Subsea mineral mining (phosphate rock, tin sand, etc.).

company profile

Shandong Yongsheng Dredging Machinery Equipment Co., Ltd. is located in Ma Song Industrial Park, Huanglou

Street, Qingzhou City, Weifang City, Shandong Province, China. Yongsheng was established in 1995, which is

a comprehensive manufacturer that integrating R&D, production, sales and after-sales service. Designing and

manufacturing of cutter suction dredgers and aquatic weed harvester are the company's main business. 

Since its establishment, Yongsheng has wholeheartedly serves its customers at home and abroad.

Based on understanding customers, listening to their opinions and suggestions, Yongsheng designs and improves

its products in order to better develop the products that meet customer’s needs. All Yongsheng products have

got ISO9001 quality management system certification and support SGS factory inspection of goods.

contact us

whatsapp/wechat 86 15063437191

email lily@dredgerys.com

Shandong yongsheng dredging machinery Co.,LTD.