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    order@dredgers.com.ua

General characteristics:

Performance4000 m³/h
The height of the water column71 m
Performance dry residue (nominal)800 m³/h
Performance dry residue (max)1600 m³/h
Power pump for pumping slurry (nominally)900 kWh
Marine diesel engine САТ С32 Acert, 1200 bhp @ 1800-2000 rpm850 kWh
The cutter 180 kW, 0-30 rpm1500 mm
Length of pipeline (maximum)2500 m
The depth of development (at least)1,5 m
The depth of the development (maximum)15 m
Diameter of the solid particles (maximum)250 mm
Nominal diameter of pipelineDN500

Specifications:

The length of the dredger36.5 m
The length of the pontoons (6 pcs: 13 x 2.5 x 2.3, thickness 8mm, 6mm, cold steel)26 m
The width of the dredge6.9 m
The height of the dredger7.4 m
Weight dredger190 ton
Deadweight410 ton
Vessel draft1250 mm
Ballast tanks 60 m3
Internal power supply220-380 V

Installed equipment:

Pontoons (Deadweight 410 m3,)6 pcs
The  САТ С32 Acert, 1200 bhp @ 1800-2000 rpm, В-Rate Marine Diesel Engine 1 pc
Gearbox CAT 3.55:11 pc
Pump GRAU 4000/71* (485 rpm, 1500 kw. 450/375 mm)1 pc
Spare impeller1 pc
Frame dredge1 pc
The suction device1 pc
Hydraulic station 180 kw1 pc
Cutter 1500 mm, 180 kW, 0-30 rpm1 pc
Winch for suction pipe1 pc
Spud winches1 pc
Cable Spud1 pc
Water Pump for main Pump1 pc
Pile (spuds)2 pcs
Axulary Engine САТ С13, 440 bhp @ 2100 rpm, С-Rate1 pc
Emergency Generator Weichai, CCFJ40Y-W, 40 kW Water tank cooling1 pc
Emergency Security System1 pc
Emergency Pump2 pcs
Compressors and Receivers, 60 m32 pcs
Paint 3 layers1 pc
Panton protection16 pcs
Liferafts1 pc
Navigation system1 pc
900A batteries1 pc
Residential unit1 pc
The Fuel tank of 8000 liters1 pc
The Water tank of 3000 liters1 pc
The Hydraulic Oil tank of 500 liters1 pc
Crane skid piles, tubes, anchors1 pc
Anchors4 pcs
Cathead 3500 kg1 pc

Addendum equipment:

Projectors (led)8 pcs
Surveillance camera 41 pc
DVR video archiving system1 pc
Depth finder1 pc
Smoke detection system1 pc
Fire extinguishers4 pcs
Air Conditioner1 pc
Latrine1 pc
Repair shop1 pc
A set of tools to service the dredger1 pc
Compressor1 pc
Signal sidelights7 pcs
Emergency water pumping system1 pc
Kit communication devices (radios)4 pcs
Sacrificial protection dredger16 pcs
Audible alarm (relative humidity, smoke, fire)1 pc
Emergency stop button1 pc

Terms of delivery and cost:

Cost EXW with Marine Register of Ships$1 250 000
Production time180 days
Prepayment 70%
Final payment upon completion of construction30%
The dredger will be transported in 40’ container.10 pcs
Warranty:12 months

* – Main pump Description Pump GRT 4000/71 

the 1GRT 4000/71 submersible pump is designed for pumping high-abrasive hydraulic mixtures with pH 6 … 12, density up to 1600 kg / m3, temperature from 278 to 333 K (from 5 ° to 60 ° C), volume concentration of solids up to 40%, microhardness up to 11000 MPa. The 1GRT 4000/71 submersible pump should be used for pumping hydraulic mixtures with a particle size of solids up to 40 mm.

The 1GRT 4000/71 soil pump is used in any industry where it is necessary to hydrotransport solids causing intense abrasive wear of the material in contact with them.

Taking into account the requirements imposed on the 1GRT 4000/71 soil pump for durability and operating conditions, the plant manufactures them with a flow-through part of superhard alloys.

1GRT 4000/71 soil pump designed for pumping highly abrasive media.

Scope soil pump 1GRT 4000/71:

· Mining and processing and mining and metallurgical enterprises;

· Thermal power plants;

· Enterprises for the production of cement;

· Diamond and gold mining enterprises;

· Technological lines of crushing, enrichment of minerals, etc.

A distinctive feature of the 1GRT 4000/71 submersible pump is the vertical connector of the outer casing.

Impellers soil pump 1GRT 4000/71 are made with a large number of powerful chisel blades on both disks. The impeller blades are arranged in such a way that they protect the discs from intense wear, as they work similarly to the wheel of a vortex pump. In addition, they prevent the abrasive particles from entering the sinuses between the wheel and the housing of a 1GRT 4000/71 soil pump, ensuring a constant minimum pressure drop in the front seal of a 1GRT 4000/71 soil pump. For efficient operation of the fender blades, the 1GRT 4000/71 submersible pump provides the ability to adjust the gap between the end surface of the fender blades and the front armored disc (without disassembling the pump) using special adjusting studs placed on the glass of the rear bearing block. Wash water is supplied to the space between the wheel and the casing, which carries the soil 1GRT 4000/71 pump out of the sinus between the wheel and the casing.

The 1GRT 4000/71 submersible pump has an internal case made of wear-resistant ICHH28N2 alloy. The 1GRT 4000/71 submersible pump design makes it possible to relatively easily and quickly replace the inner housing, which is subject to wear, consisting of a cochlea and a protective disc.

The impeller is located between the inner casing (rear side) and the protective disk (front side).

The transmission of torque from the electric motor to the 1GRT 4000/71 submersible pump is carried out through an elastic sleeve-and-finger coupling.

Main technical characteristics, 1GRT 4000/71 soil pump:

• Productivity – 4000 cubic meters / hour;

• Head – 71 meters;

• Allowable cavitation margin – 4.8 m

• Impeller diameter – 1390 mm

• The mass of the pump – 15350 kg.

Company  Krivorozhmekhservis, LLC, Ukraine

Characteristics of the pump GRT-4000/71 n=485 rpm

The dimensions of the pump with electric engine 1GRT-4000/71