China River Lake Silt Channel Desilting Dredger For Sale
The dredgers are commonly used to dredge sediment(silt) in channels, rivers, bays and ports. The silt desilting dredger can work almost continuously while dredging and pumping the sediment (dredge material) through a discharge pipeline to a designated placement area.
1.-- Run stably, with spuds and support legs to keep balance
2.-- High efficiency, with submersible mud pump and cutter compound equipment ensuring high slurry density (around 25%)
3. --Hydraulic transmission, light and flexible operation
4.--Can be used in closed channel, shallow areas, industrial pond, reservoir where other dredgers cannot work
5.-- Lights on dredger are available to make sure constant work for maximum efficiency
6.--Key component like engine, pump and hydraulic system are adopted the international brand
For one cutter head, there are 5 blades, 5-7 teeth equipped on one blade. There is material Cr. for easy-wearing proof. Cutter head is driven by hydraulic motor; cutter bearing has lubrication seal-in units.
The cutter motor is hydraulic driven low speed and high torque heavy duty design. The cutter motor is mounted on the cutter front piece on the ladder end. A special cover is provided to protect the motor from damage due to sand, rocks and debris. The cover can be removed from easy inspection and maintenance.
For hosting the ladder, one hoisting winch is provided on the front of the main pontoon mounted on a stiffened foundation. The winch is hydraulically driven through a reduction gearbox build in the winch structure. The winch has a disc brake that is automatically activated in case of pressure drop. The winch is operated from the control cabin and has one fixed speed.
For ladder side pull, two winches are provided on the front of the main pontoon mounted on a stiffened foundation. The winch is hydraulically driven through a reduction gearbox build in the winch structure. The winch has a disc brake that is automatically activated in case of pressure drop. The winch is operated from the control cabin and has variable speed.
Hydraulic system is the most important parts of river lake channel silt desilting dredger. The hydraulic system requirements are very high and strict; it’s the main artery of the entire channel desilting dredger. Lateral traction winches, lifting winch and cutter head of the dredgers are driven by hydraulic motors.
4).Dredge Pump (Warman Technology)
The dredge pump is high efficiency made from wear resistant casting impeller and liners fitted on heavy duty shaft and high quality roller bearings.
The impeller is fitted on the shaft by trapezoid thread directly machine on the shaft end. The shaft sealing is a water cooled sealing that can be replaced after wear life. The impeller is a special type of double curved vanes high efficiency and wear life optimized tested in laboratory and onboard of dredgers. The impeller is fixed on the shaft by trapezoid thread machined directly in the impeller hub.
The pump casing has a shape of a volute designed of a high efficiency and wear life optimized tested in laboratory and onboard of dredgers. The pump liners are made of high wear resistant materials and thick wall thickness to maximize the wear life. The casting covers are made from fabricated steel stiffened where necessary and machining to fit the case and the liners.
5).Deck Crane and Hydraulic Oil Cylinder
The deck crane that installed beside the sand pump is a kind of lifting equipment with cantilever and mainly used as a tool when repairing the sand pump and replacing the wearing parts.
Hydraulic oil cylinder, usually used to lift or fall down the spuds to help the dredger's moving. The power will be offered by hydraulic system.
The dredger is equipped with an operation cabin that provides good visibility all around and good safely performance because of two lockable doors and a front window. And the dredger cabin is equipped with rest chair, air conditioner, the noise is very low, suitable for long working time. To pass low bridge and for road transport easily, the controlling room can be dismounted.
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