Easy to Operate Sand Dredger for Sand Extraction in Rivers Lakes and Seas

As an important equipment of modern dredging engineering, the jet suction dredger plays a key role in river regulation, port maintenance, offshore engineering and other fields with its unique working principle and significant technical advantages. ​
The working principle of the jet suction dredger is based on the coordinated operation of fluid mechanics and mechanics. The ship is equipped with a powerful mud pump and a high-pressure water pump. During operation, the high-pressure water pump sprays water at high speed to form a strong jet impact force, which disperses the silt, sand and gravel on the bottom of the water and suspends them in the water; at the same time, the mud pump generates a strong suction force to suck the mixture of materials and water dispersed by the jet into the mud suction pipe, and then transport it to the designated location through the mud discharge pipeline. This combination of jet impact and vacuum suction realizes efficient and continuous excavation and transportation operations, and can adapt to a variety of complex underwater environments.

The above technical parameters are for reference only,specific device configuration depends on the conditions of each project,customer and technical requirements.

Types of Jet Suction Dredgers
Stationary (Non-Self-Propelled) – Used in fixed locations like ponds or small rivers.

Self-Propelled – Larger vessels with mobility for offshore or deep-water projects.

Modular Design – Can be mounted on barges or pontoons for flexible deployment.

Shooting faucet
Material: Usually made of strong and wear-resistant metal materials, such as cast iron, stainless steel, etc., to resist the erosion and wear of water flow and mud and ensure long-term stable operation.
Shape: Generally a circular or oval tubular structure, with a sand suction port at the front end and a sand suction pipe at the rear end. Some shooting and suction faucets will also be designed to be bendable or retractable according to actual needs to adapt to different working environments and angle requirements.
Counterweight: In order to ensure the stability and verticality of the shooting and suction faucet underwater, counterweight blocks are usually installed at or around its bottom so that the sand suction port can be better close to the bottom mud layer and improve the sand suction efficiency

sand Pump

The dredge pump is the core component that transports the slurry (a mix of water, sand, and sediment) through the pipeline. Designed for heavy-duty performance, it handles abrasive materials with high efficiency. Key features include wear-resistant materials, strong suction capacity, and variable speed control to optimize production.

PLC Control System

The control room is the command center of the dredger, equipped with advanced monitoring and control systems. Operators use joysticks, touchscreens, and sensors to manage the cutter head, suction pipe, pumps, and positioning systems (like GPS or DP). Real-time data on depth, pressure, and efficiency ensures precise and safe dredging operations.

From the core advantages, the suction dredger has extremely high operating efficiency. Its powerful mud pump and jet system can quickly handle a large amount of earth and stone. Compared with traditional dredging methods, the dredging volume per unit time has been greatly increased, which can significantly shorten the project cycle. In terms of adaptability, the ship can flexibly cope with waters of different depths and soil conditions, whether it is shoals, rivers, or deep sea areas, whether it is soft mud, silt, or medium-hard clay, it can operate effectively. In addition, the operation of the suction dredger is relatively simple. Through the automatic control system, the operator can accurately control the direction of the jet, the size of the suction force, and the mud discharge path to ensure construction accuracy and reduce the difficulty and labor intensity of manual operation. ​
In terms of technical characteristics, suction dredgers are usually equipped with advanced positioning and navigation systems, such as GPS, sonar, etc., which can achieve high-precision positioning and real-time monitoring to ensure construction safety and project quality. At the same time, in order to reduce the impact on the environment, modern suction dredgers also adopt environmentally friendly designs, such as optimizing the mud discharge system to reduce mud leakage; equipped with sewage treatment equipment to purify the sewage generated during the operation, in line with environmental protection standards.

Shandong yongsheng dredging machinery Co.,LTD.is located in Huanglou Street, Qingzhou City, Shandong Province, China. It has 2 production bases , total area near 2000m2, and more than 20 years manufacturing experience in water area environmental protective equipment. It is a professional supplier of integrated with R&D, consultation, manufacturing and after-sale service. Yongsheng now has obtained certification: ISO9001.

The application scenarios of suction dredgers are very wide.

①In river dredging projects, it can quickly remove silt in the river and restore the river's navigability and flood-carrying capacity;
②In port construction and maintenance, it can be used to excavate harbors, widen waterways, and ensure the safe entry and exit of large ships;
③In offshore oil and gas field development, submarine cable laying and other marine projects, suction dredgers can also play an important role in creating a good underwater environment for engineering construction

Yongsheng dredger
+86 150 6343 7191
lily@drdgerys.com
Shandong Yongsheng Dredging Machinery Co., Ltd.
Providing best solutions for dredging
Hydraulic Dredging | Dredging & Desludging Dredging & Desludging