Vessels

Air pressure vessel

KOKUSHO


DATA

Length:60 m Breadth:25 m Draft:1.76 m 

◎Environmental-friendly    ◎High work efficiency    ◎Safety of the site
Year built 1996
Air feeder manufacturer Sumitomo Heavy Industries, Ltd.
Air feeder system Rotary feeder system
Air feeder rotor capacity 6.9 m3 (1 pocket 1.15 m3 × 6 pcs)
Air feeder dimension Width : 3,200 mm × height : 3,350 mm
Air feeder nominal discharge capacity 1,200 m3/h
Air feeder discharge distance 3,000 m
Backhoe model HITACHI EX1800-2
Backhoe capacity 12 m3
Backhoe transfer capacity 1,000 m3/h
Main engine Yammar 6N280L-EN (2,200 PS)× 3pcs
Main generator ammar M220L-SN (900 PS)
Aux. generator Yammar 6HAL-N (100 PS)

Feature1

Environmental-friendly

Lately preservation of water quality in the ocean is demanded. In reclamation, conventional pump system has a turbidity problem due to spill water. So, we came up with the idea of building an air pressure vessel with high efficiency considering environment and next generation. That can transfer the large volume of dredged soil, foreign material and clod that passed the hopper's grid, as they are without any additional water to the reclamation site with the help of air pressure. Reclamation by the air pressure vessel can prevent the pollution in the vicinity as spill water is reduced largely. Time to dry the reclamation site is shortened for faster land usage opportunity. We made a speedy and environmental-friendly reclamation available.

Feature2

High work efficiency

A large backhoe with sufficient discharging capability made high discharging volume with cost saving possible.
Gap between air feeder's rotor and casing can be auto-adjusted for stable transfer preventing lowering efficiency.
This air feeder doesn't choose the size of the soil, so the equipment like crusher or vibrator is not necessary and diverse soil as silt, sand or gravel can be handled. Operation method can be adjusted according to the condition of soil type or discharging distance to maintain high efficiency.

Feature3

Safety of the site

According to the ordinance on Industrial Safety and Hygiene, handrails, safe passage and fences around the machinery are installed. Remote controlled air feeder and mooring winch are monitored with surveillance camera.
For occurrence of abnormal situation during operation, auto alarm or automatic stop kicks in. Emergency stop switch is installed near air feeder for manual stop.