Drilling dredger / River Sand Extraction Machine / sand excavator
HOW DOES THE DSD WORKS?
All DSDs are equipped with a drill pole, the suction tube and water jet tube are attached to the drill pole. During dredging,DSD vertical move down the drill pole and rotates its drill , until the drill head digs into the sand layer ofseabed, drill pole as a spud to lock the vessel into a stationary position. Then the water jet pump started, a high pressure water jet hits the sand layer to make high-tensity sand-water mixture,
the dredged materials then sucked up and transported through a pipeline by dredge pump. The DSD will discharge the tailing to the disposal site via floating pipeline or hopper barges.
Dredger Application
Drilling suction dredgers are widely using in deepwater sand dredging, iron sand mining etc.
Working Conditions
Recommended use of the environment: with rock and gravel <50% (rivers, lakes, reservoirs, ports and other sand mining project)
1.The range of adaptation to the environment: the temperature no higher than 40 degrees Celsius in summer and winter temperatures not lower than -10 degrees Celsius,the air humidity is no more than 30%,wind power does not exceed 7 in rivers.
2. River ore requirements: sand ratio is no less than 60% (clay content is no more than 10% scree content is no more than 15% gravel content is no more than 15% Wind Stone is no higher than 10%.)
3. The ship diesel engine should apply to the CIS countries grade use of fuel, oil.
4. The ship is equipped with night-time lighting system suitable for all weather conditions and working uninterrupted.
5. 2-3 persons operate the dredger every time.
Dredger Advantages
1. Construction: Suitable size, single deck, less draft and less displacement compare with similar vessel. Building in customers' worksite, structure is more stable.
2. Operating flexible , safety,and high efficiency.
Operation room is light-filled and wide view. PLC system is easily operated by one person. Operating flexible, safety, and high efficiency.
3. Self-propelled System.
Marine engines are installed at the end of dredger hull , self propelled marine engines can increase the efficiency of a standard cutter suction dredger by about 20%, due to the reduction in the amount of time taken to step forward.
4. Drill pole
During dredging ,the drill pole is dropped end to make sure that it penetrate the soil deeply enough to be secure. The hoisting system can raising up or lowing down the drill pole of a required depth(0to110m). Drill pole as a spud to lock the vessel into a stationary position, meanwhile, pumping slurry vertically out of water through a suction hose which is installed in the drill pole. The drilling suction dredger can increase the slurry concentration by 10% and maximum the dredging depth to about 110m.
5. Reputable Main Engine: Cummins / Weichai / Deutz
The dredgers are equipped with world famous powerful engines, which are famous for its
durability, lower oil consumption, standardized accessories and easy maintenance.
6. Dredge Pump
Australia Warman Tecnology, Shijiazhuang pump.
7. Discharge dredged material
The dredged materials will be transported through a pipeline by centrifugal dredge pumps or by discharge it into a hopper barge with a special loading system.
8. Assembly & Staff Training on worksite.
Our experienced installers will arrive at the construction site to guide, teach and training your crews to debug and operate the dredger .
9.Construct Technique
YUANHUA Work Team has building experience over 20 year, Trainings and experiences make our workers highly productive and technique.
YUANHUA Drilling suction dredger YHDSD series.
| Model | YHDSD200 | YHDSD250 | YHDSD300 | YHDSD350 | YHDSD400 | YHDSD450 | YHDSD500 |
| Dredging depth (m) | ~15 | ~20 | ~40 | ~40 | ~40 | ~50 | ~50 |
| Capacity (m³/h) | 200 | 250 | 300 | 350 | 400 | 450 | 500 |
| Discharge Distance | ~300m | ~500m | ~1000m | ~1500m | ~1500m | ~2000m | ~2000m |
| Overall length (m) | 15 | 23 | 25 | 28 | 35 | 38 | 38 |
| Overall width(m) | 6.5 | 8 | 8 | 10 | 11.5 | 11.5 | 12 |
| Inlet & outlet(mm) | 200/150 | 250/200 | 300/250 | 350/300 | 400/350 | 450/400 | 500/450 |
| Draft loaded (m) | 0.75 | 0.75 | 0.75 | 0.9 | 0.9 | 0.9 | 0.9 |
| Nos. of pontoon | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Water flow (m³/h) | 700-900 | 1100-1200 | 1300-1500 | 1600-1800 | 1800~2000 | 2300~3000 | 3200~3800 |
The parameters are just for reference. Customized specification is available.
Q1. Who are you?
Qingzhou Yuanhua Machinery Manufacture Co.,Ltd. The Yuanhua owner started the business by build a jet suction dredger for fishpond desilting just over 20 years ago. We started out very small . As Yuanhua grow over the years we gained more building technique and operational experience, we started to supply various of dredging equipments ,such as cutter suction dredger, bucket chain dredger, gold dredger ,sand mining dredger, waterweeds harvest, sand processing line,sand washing and sieving machine,mining separator etc. We also independent research and development of Drilling Suction Dredger, more efficient for deep water sand mining. We believe in great client service and excellent product quality. And building customer relationships, we still on service for our first client since 1994.
Q2. What is your advantages?
We survive in the competition market for over 20 years rely on excellent product quality, innovation development and great client service.
Consultancy: Our team of highly skilled engineers can provide a broad range of advisory services based on more than 20 years of theoretical and operational experience.
Training: YUANHUA will provides high quality courses for operators, technicians and project engineers. A well educated crew lead to an optimum operation.
Warranty: We provide 12 months of warranty period for our products with on site technical guidance.
Q3. Where is YUANHUA Shipyard? How can I visit your company?
A: Our company is located in Qingzhou, Shandong province, China.
Nearby Airport: WEIFANG, JINAN or QINGDAO .
G-train station: QINGZHOU.
Yuanhua always welcome you to visit us!