Water jet sand dredger is a very economical dredging vessel. It can efficiently remove sand and sediment from the bottom of water bodies. Water jet sand dredgers are widely used in river regulation, removing silt and suspended solids from rivers, improving water flow conditions, maintaining the navigable capacity of waterways, and reducing the occurrence of flood disasters. Water jet sand dredger can remove sand and sediment from the coastline, preventing coastal erosion and beach disappearance. In addition, water jet sand dredgers are also of great significance in land development and construction. They can provide sustainable sandy resources, reduce transportation costs and environmental impacts.
In this article, we will provide a detailed introduction to the structure, principles, and applications of the water jet sand dredger.
1. Dredger Classification and Advantages of Water Jet Sand Dredger:
Dredger is a kind of high-efficient equipment to dredge material from the bottom of the water to the surface and transport that to certain distance. At present, the commonly used dredgers mainly include cutter suction dredger, trailing suction dredger, water jet sand dredger, augur suction dredger, bucket wheel dredger, bucket ladder dredger, grab dredger, backhoe dredger, submersible pump dredger, pneumatic dredger, etc.
Compared with other dredgers, jet dredgers have the characteristics of deep dredging depth, high productivity, easy operation, low energy consumption, wide application range, low cost and stable mechanical performance.
2. Description and Working Principle of Water Jet Sand Dredger:
Water jet sand dredger is also called jet suction dredger. The main components of the dredger are high-pressure water pump and sand suction pump. The water pump produces high pressure water, which will spray on the sediment layer at the bottom through the high-pressure water pipe, and the sediment splashes around the sand suction head. The high concentration mixture of sediment with water will be sucked up by the sand suction pump and discharged to the designated position by pipe. In this way, the whole working process is completed by jetting and suction.
3. Composition of Water Jet Sand Dredger:
3.1 Dredger hull:
Dredger hull usually including middle hull for pump and engine units, side pontoons, brackets and sunshade.
Sand pumping components: sand dredge pump and engine unit, high-pressure water pump and water pump power, sand suction head, gantry for suction head, suction head lifting equipment, oil tank etc.
3.2 Dredger fixing and moving device:
The winches cooperate with the anchors to fix the dredger. Dredger moving by mobile winch or propeller system.
3.3 Pipeline system:
Pipeline system includs sand suction pipe, sand discharge pipe, pipeline floating device etc.
3.4 Other auxiliary components:
Including sperating room, rest room for workers or compartments for sand pumping equipment.



3.5 Core parts:
Among these components, the sand dredge pump unit is the core of the water jet sand dredger, and the operation of the whole ship depends on the dredge pump. Therefore, the productivity of a dredger mainly depends on the performance of the dredge pump. A high-performance dredge pump and suitable components can make the whole dredger work efficiently. Before we provide dredger solution to our customers, we usually have to inspect the detailed requirements of our customers and the working conditions, including dredging depth, discharge distance, height difference, solid quality etc. Then we choose a suitable dredge pump and engine accordingly.
4. Application and Market Prospect:
This water jet sand dredger is widely used in desilting and sand extraction projects of reservoirs, artificial lakes, rivers and ports. In order to meet the requirements of different customers and working conditions, the water jet sand dredger includes a variety of specifications. The output range is 50-2000 m3/h, the dredging depth is 2-35 meters, and the discharge distance is 50-3000 meters.
With the renovation of rivers and lakes, the development of the construction industry and the big demand for sand, the dredging work has become an industry with less investment, quick results and high benefits. The sand extraction operation with the dredger can make use of the sand on the basis of dredging the channel, which has good social and economic benefits.
5. Conclusion:
In summary, water jet sand dredgers have the characteristics of high efficiency and economy, which can effectively remove sand and sediment at the bottom of water bodies. It plays an important role in areas such as waterway dredging, coastline protection, river regulation, and land development. The water jet sand dredger has received widespread attention for its deep excavation ability, high productivity, easy operation, low energy consumption, wide applicability, low cost, and stable performance. With the improvement of rivers and lakes, the development of the construction industry, and the high demand for sandy soil, dredging work has become an industry with low investment, fast results, and high returns. The use of water jet sand dredger can utilize sedimentary sand on the basis of dredging waterways, and has good social and economic benefits. Water jet sand dredger will continue to play an important role in water engineering and land development, meeting people’s needs for cleaning the bottom of water bodies, ensuring waterway safety, and promoting economic development.
About Tai’an Ocean Pump:
Tai’an OCEAN Pump Co. Ltd. (referred to as OCEAN Pump)specializes in the development, production and sales of sand pump machine, sand dredging machine, submersible dredger, sand pump dredger, portable dredger, sand pump, submersible slurry pump, heavy duty sand pump, etc. As the leading sand dredging equipment designer, manufacturer and exporter, OCEAN Pump has been dedicated in supplying sand dredging machines to worldwide customers for over 20 years. OCEAN Pump has won the praise and trust of customers with rich industry experience, professional technology and excellent service.
Contact with us for more details:
Sally Peng
Tel /WhatsApp /Wechat :+86 18554212226 +86 13793808065
Email: oceanpump2@tsbeng.com, sales@sanddredgers.com