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Types Of Dredgers

2019-11-01 17:11:50 Jason 7540

Types Of Dredgers


The type of dredger has many different types depending on the construction environment. Different dredgers have different uses.

For example, when the stone at the bottom of the water is very large and very hard, it is very wrong to use the cutter suction dredger because the cutter suction dredger cannot break the large hard stone, which will cause the cutter head to wear or even rupture. Serious damage to the core components (pumps) of the dredger will result in long maintenance costs.

When the waters are used for large and hard stones, we should choose a bucket-type dredger, which is similar to a digging bucket. It only needs to remove the stone from the bottom of the water and put it into the transport ship. This is the correct way to handle it.

Therefore, it is crucial to choose the type of dredger. Choosing the right dredger can reduce the construction time first, and secondly, it can reduce the maintenance cost.

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Leader Dredger will introduce the types of 9 dredgers through this article.

1.Cutter Suction Dredger

The cutter suction dredger is a fixed type of dredigng equipment. After fixing the position by the positioning pile, and then pulling the left and right sides alternately by the winch, the reamer can perform the fan-shaped movement, and the rotating reamer penetrates the water and swings in the soil. At the same time, the sediment in the soil is sucked into the pump through the suction pipe, and then the sediment is directly sent to the mud treatment area through the pipeline.

The cutter suction dredger loosens the soil at the bottom of the river or the seabed using a rotating reamer, sucks it into the pump through a straw, and then sends it to the mud treatment zone through the mud pipe.

And the modern precision instruments can accurately indicate the dredging profile and the side-breaking slope. When the size of the cutter suction dredger is very large, it is usually equipped with self-propelled equipment, so that easy on-site movement can be achieved.

Conventional cutter suction dredgers are more suitable for use in construction environments where the soil is only soil and small stones. However, it is now possible to adapt to more construction environments by replacing the reamer. For example, broken stones are not very hard stones or water plants that cut off the bottom of the water.

Although small cutter suction dredgers are not equipped with self-propelled equipment, they are the least expensive and economical to dredge compared to other types of dredger dredgers.

Cutter Suction Dredger -Leader Dredger.jpg


Cutter suction dredgers are divided into three categories

1.1.Inboard Pump Dredger

The overall style of this type of dredger is exactly the same as that of a cutter suction dredger, except that the pump is in the cabin. This design is mainly suitable for shallower waters, because of the small power, so you can save costs.

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1.2.Submersible Dredge

The same submersible dredge looks exactly the same as a cutter suction dredger, except that the pump is installed in the middle so that it has a deeper depth of excavation and strength. Products designed this way are more expensive than inboard dredger. Because the submersible dredge can dig deep waters of 17 meters.

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1.3.Dual Pump Dredger

The appearance is still the same, but this dredger has two pumps, one main pump in the reamer and another sub-pump in the cabin. This design maximizes suction and allows for deeper digging where the mud is transported further. The biggest drawback is that the cost is higher than the submersible dredger.

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2.Trailing Suction Hopper Dredger

Trailing Suction Hopper Dredger is a self-propelled ship. This type of dredger does not require transport vessels and pipelines because it directly draws mud from the bottom of the mud into the mud bin of the dredger through the equipped hoe and suction pipe. The “mud silo” is the most unique design of the Trailing Suction Hopper Dredger. This design can save the cost of transporting ships and pipelines. It only needs to be discharged directly into the designated area after the mud silo is filled with mud.

Trailing Suction Hopper Dredger has good sailing performance, can be self-propelled, self-loading, self-unloading, and is in a state of navigation during work, without the need for positioning devices. It is suitable for the excavation and maintenance of uncovered, narrow coastal inbound waterways, with the highest efficiency when excavating silt.

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3.Bucket Dredger

Bucket dredger can last a long time and has a high yield. However, the digging chain is less prone to wear. More for dredging sand, stone, ore or gold. Bucket dredger is generally a large dredging equipment, usually used in large mines and large hydraulic projects.

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4.Jet Suction Dredger

The Jet suction dredger is similar to the cutter suction dredger. The jet suction dredger does not have a cutter head. It is equipped with a high-pressure water gun, which blows the bottom of the water through a water gun and directly sucks into the mud pipe.

Such dredging equipment is only suitable for waters where the bottom of the water is all sand. Because jet suction dredger does not have a reamer, if there are stones in the water, it will damage the pump and cause expensive maintenance.

Jet Suction Dredger - Leader Dredger.jpg


5.Wheel Cutter Dredger

Wheel cutter dredger is mainly used to clean the river. When the water contains a lot of hard stones, our best choice is wheel cutter dredger, because he only needs to clamp the stone to pull out the water surface, reducing the damage of the stone to the equipment.

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6.Portable Dredge

This is a very convenient dredging equipment. The pump is fixed directly by the winch, the pump is submerged, and the mud is sucked out through the suction pipe.

This type of equipment is very convenient to transport, but it is only suitable for small ponds.

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These 9 kinds of equipment are currently used more dredging equipment, each has its own advantages, different construction environments use different equipment.


If you want to choose a dredging device better, you can contact us.


Dredging equipment manufacturer - Leader Dredger


Leader Dredger Company Information:

Mainly for international marketing and exporting for the Dredgers,pipeline,construction machinery etc.

Weifang Leader co isThe only Professional Chinese manufacture for the cutter suction dredger production which combine:Design and reserch,Production,export and after sale service.

The Chinese dredge manufacture who has many branch offices in Asia,Russia,Mid-East,Africa countries etc;

The Chinese manufacture who keep the biggest sale anualy for cutter suction dredgers.

Leader dredger,on the march to a world famous brand name,is your ideal choice for dredging machinery!