St 300 Water Well Drilling Rig Machine Pneumatic Rocky Blasting Drilling Rig
Product Descrption
It solves the problems of difficult drilling with air DTH hammer in soil layer and low construction efficiency of water drilling mud in hard rock layer, gravel and pebble layer. The water-gas dual-purpose drilling rig is suitable for all kinds of strata and has high core drilling efficiency in drilling and geological exploration.
Product Parameter
| ST 300 Drilling Rig | 300m |
| Drilling Hole Diameter | 300 mm |
| Air consumption | 17-35m³/min |
| Length of rod | 1.5m,2m,3m,6m |
| Dia. Of rod | φ76, φ89,φ102,φ114 |
| Lifting power | 24T |
| Rotation torque | 8500-11000N.m |
| Rotation Speed | 40-70r/min |
| Diesel Engine | Yuchai |
| Engine Power | 85Kw/2200rpm |
| Travelling speed | 0-2.5 Km/h |
| Climb capacity | 30° |
| Weight | 9000kgs |
| Dimension | 5900x2000x2850mm |
| Application | Complicated geological conditions:Rock,Mud,Sand etc. |
| Drilling Way | Top drive hydraulic rotary and propulsion,Dth Drilling or Mud Pump Driling |
ST 300 Water Well Drilling Rig Machine Features
1. The speed range of the drilling rig is 14-1030r / min, and the maximum output torque is 9500n. M.
2. The drilling rig adopts long travel speed doubling mechanism and mechanical power head with a stroke of 3500mm, which is used to improve drilling efficiency and reduce drilling plugging and burning accidents.
3. The drilling machine is in mechanical operation. Some functional interfaces are reserved in the hydraulic system, which can be expanded according to the process requirements of different users.
Woking Attentions
During the working process of water well drilling rig, the pump is used for reverse circulation operation. Under the action of atmospheric pressure, the circulating fluid flows from the sedimentation tank to the bottom of the well through the return ditch along the annular gap of the well. At this time, the rotary table drives the drill pipe to drive the drill bit to rotate for drilling. The negative pressure established by the suction of the mud pump sucks the debris mud into the inner cavity of the drill pipe and discharges it into the sedimentation tank through the mud pump.
Leakage of drilling mud:
Because the water head is too high, it will also penetrate into the hole wall.
Avoid or dispose of:To avoid mud leakage, the retaining wall can be strengthened by adding thick mud or filling clay to slowly deform, or by repeatedly impacting the retaining wall with filled soil infiltrating into gravel and pebbles;
the diver can fill the joint leakage with absorbent cotton and quick drying cement to seal the joint.
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