Home  >  Mining & Metallurgy Machinery  >  Mining Machinery  >  Dredger

Dredging depth 15m, Distance 2000m, Capacity 1200cbm/h, hydraulic cutter suction sand dredger, testing center for ex-factory - details see: https://www.machineto.com/8inch-to-24-inch-hydraulic-cutter-suction-sand-dredger-10311962

1. Company profile and product introduction

Qingzhou Haiyang owns blanking workshops, gold panning machinery processing workshops, machining workshops, anti-corrosion workshops, general assembly workshops, product debugging and testing centers before ex-factory.

The products are of a great variety including800—20000m³/h large scale dredging and sand mining equipments (which includes hydraulic cutter suction type, hydraulic bucket wheel type, mechanical cutter suction type and suction type),gold panning dredger, iron extracting dredger, iron extracting equipments, sand sieving machines, crusher, weathering sand producing lines(break, rinsing and separating). All the products are with different sizes for customers’ choices. We can also design and produce special types of machinery according to customers’ requirements.

Specifications: hydraulic cutter suction sand dredger

Item/model	HCL200	HLC250	HLC250A	HLC300	HLC300A
Pump size	8inch	10inch	10inch	12ich	12inch
Pump flow	800m3/h	1100m3/h	1500m3/h	2000m3/h	2500m3/h
Capacity	160CBM/H	220CBM/H	300CBM/H	400CBM/H	500CBM/H
L*B*H	15.5*7.2*2m	15.5*7.2*2m	15.5*7.2*2m	21*7.5*2m	21*7.5*2m
Dredging depth	8m	10m	10m	10m	10m
Draught	1.3m	1.3m	1.3m	1.4m	1.4m
Distance	600m	1000m	800m	1200m	1200m
Dia.suction/discharge pipe	325/300mm	350/350	377/377mm	426/410	460/420mm
Dia.cutter head	Φ1100mm	Φ1100mm	Φ1100mm	Φ1300mm	Φ1300mm
Main engine power	258kw	300kw	450kw	600kw	650kw
Dia.cyclinder	100mm	100mm	100mm	160mm	160mm

Item/model	HCL350	HLC400A	HLC500	HLC600
Pump size	14inch	18inch	20inch	24inches
Working load	3000m3/h	3500m3/h	6000m3/h	8000m3/h
Capacity	600CBM/h	700CBM/h	1200CBM/h
				1600CBM/h
L*B*H	23.5*7.5*2.4m	23.5*7.5*2.4m	26*8.5*2.6m	29*10*3.0m
Dredging depth	15m	15m	15m	15m
Average draught	1.6m	1.6m	1.7m	2m
Distance	1500 m	1500m	2000m	2500m
Diameter	550/500mm	610/550mm	680/650mm	810/780mm
Pump size	16/14GH	450WN	500WN	600WN
Dia. cutter head	Φ1550mm	Φ1550mm	Φ2200mm	Φ2450mm
Total power	1000kw	1050kw	1580kw	2400kw
Emergency generator	24kw	24kw	30kw	30kw

2. Working site abroad

1)The sellerwill send 2-3 qualified and experienced engineers tothe buyer’sworkplace to direct and guide thecutter suctiondredger'sinstallation and training workers operating.

2) To assist in the installation, the buyerwill arrange for 6-8 workers to aid these engineersin the process of installation.

3)Usually installation is expected to take 10-20 days.

4)The seller’sengineers must arrive atthe buyer’sdesignated place within 3 days after thecutter suctiondredger has been transported to the workplace.

5) After the dredger's complete installation,the buyerwill coordinatethe seller’sengineers to test dredger's performance in appropriate water. Dredger Test includes: operation of thesand/muddredging, hydraulic and electrical systemsoperating, running of the dredger's outfitting equipment, andthe seller’sengineers' debugging of the dredger's natural workin daily working.

6)The buyerwill be responsible for givingthe seller’sengineers and translator: accommodation, food, visa, roundtrip travel tickets and a wage per day for each person. Ifit is the seller’serror causes the installation time to exceed 20 days,the buyerwillnotpay a salary. Ifit is the buyer’serror makes the installation time take more than 20 days,the buyerpays cost by themselves.

7)The buyer’sworkers will followthe seller’s engineers’proper arrangement. To ensure the smooth installation of the dredger,the buyerwill guarantee thatthe seller’sengineer’s return to China within 3 days after the dredger has been installed and tested successfully.

3. Transportation to the port from factory

After the testing, the dredger is dismantle and repainted again, then packing for transportation. The transportation is divided into 2 parts, one is from the factory to the Tianjin port, and the other is from Tianjin port to the destination port. From the factory to the Tianjin port, trucks are using for transportation. Detailed transportation list and drivers information will be recorded before leaving the factory.

Because pontoons of dredger are designed wider and longer, they are transported in bulk vessel from the sea. And also in the transportation process, pontoons are anti-corrosion paint, then it doesn’t matter which place they will be put, in the deck or at the bottom of the vessel.Lug andsafe point hoist have been designed on the deck of the pontoon; it is convenient for loading and unloading.

4. Engine room inside

Engine roomis the heart of the dredger. There are equipments inside: main diesel engine, auxiliary diesel engine, dredging pump, gear box, coupling, generator, hydraulic system, and different cables for connection.

In order to have good connection and performance, different foundations are designed to put the dredging pump, the engines and the coupling; around the foundation, there are also frames designed as supportive of foundation.

On the wall, a lot of compartments are designed for tools; it is convenient for repairing and maintaining.

According to our practice in the last 20 years, the engine room needed to be designed wider and bigger. That’s because in the working process of the cutter suction dredger, engines and dredging pump and generator need checked and supervising. And in case of emergency, it is easily for walking.

5. Customer visiting and negotiating

6. Testing center before ex-factory

Length of the testing center is 60m, width is 28m, and depth is 8m.

In order to guarantee good performance and safety of our cutter suction dredger, all our products will be tested in the testing center before ex-factory. It is tested like the machine working in the customer’s working site. Performance and safety will be tested and recorded in the testing process.

Before one day of the testing, engineers from different equipments of suppliers will be in the factory to assist the testing, for example, engineers from Cummins engine Chonging; engineers from dredging pump company,; engineers from generator company. Usually, before 5 days for the testing, the seller will inform the buyer for supervising the testing process before dismantle the dredger. For the testing, totally is 5 days. The 1^stday is testing thesealing and anti-corrosion painting of the 3 pontoons; the 2^ndday is hydraulic system testing; the 3^rdday is main engine and auxiliary engine testing when dredger in the condition of working; the 4^thday is hydraulic cutter driven system in the operating room, and the 5^thday is dredging pump testing in different pressures of water flow.

After testing, dredger will be tug out from the testing center for dismantle and shipping. After the dredger dismantle, 3 pontoons will be repainting, because in the testing process, there will be oil on the deck and pontoons.