The Vacuum drilling system, originally patented in the early 1960’s, has been specifically developed to provide a low cost, highly efficient drill sample recovery system. Extensive field development and testing has resulted in the vacuum drilling system being recognised as available accurate drilling method.
Principally designed for mineral exploration drilling, the Vacuum Drilling system has gained world wide application, with emphasis in bauxite and gold mining industries.
The system comprises vacuum pump, oil bath filter, sample separator, vacuum swivel and drive shaft adaptor to rotary drilling head.
The vacuum pump can be driven either hydraulically or mechanically from the existing drill rig power pack. Alternatively, separate independent drive source can be provided.
Continuous rating for the vacuum pump is 33 cfm @22″ Hg vacuum.
Sample is removed from the rod string via the vacuum swivel mounted above the rotary head. Cuttings proceed to the two stage sample separator for removal from the air stream and are collected in the bulk sample flask.
Separated air is then passed through the oil bath filter to being discharged from the vacuum pump.
The unique sample separation employed in the 101 Vacuum Drilling System, ensures uncontaminated recovery of all drill hole returns. Once removed from the air stream, the bulk sample can either be packaged in total or site split prior to dispatch to the laboratory.
The 101 Vacuum Drilling System is complimented with a full range of vacuum drilling consumables including:
DRILLING BITS (FOR VARIOUS GROUND CONDITIONS)
Vacuum Drilling Rig Specifications
Drill: 2100 Explorer Drill for tractor mounting, with the following features:
Head activation via cylinder and 2:1 chain system
Pullout force: 3,600 kg
Pulldown force 2,400 kg
With fine feed for drilling and fast feed for tripping
Drill rod guide
60 mm ID hollow spindle rotary head
1 : 1.78 gear ratio
0 – 400 Rpm rotation speed (variable)
400 Nm Max drilling torque
Manual swing away head
Fitted with bush bar and tree deflecting bars
2 – rear levelling jacks
1 – front levelling jack
PTO driven hydraulic system with generous hydraulic tank and cooler
Comprehensive manual control console with simplified gauges for the tractor engine
Tractor throttle control.
2- rear mounted, remote, emergency stop buttons
Standard tool set
Drill parts manual
Carrier: Needs a minimum of 45 Hp at the PTO
High capacity vacuum pump, hydraulically driven with variable speed, with up to 112 Cfm
20” Hg continuous 27” Hg intermittent suction
4” vacuum gauge
Primary Cyclone sample separator
4 litre clear sample container
Secondary filter bag and tertiary paper air filtration
Oil catcher and vacuum silencer
Compensating wash pipe with AW box
Sample splitter 50:50 with trays
Optional Drill Accessories
1,000 kg hydraulic winch
Bit grinder hydraulically driven with stone fitted.
Rotating clamps for rod break out
Exhaust rod drier
Storage for 6 rods at the rear of the machine
Rod racking for 80 m of drill pipe
Tractor Sump guard
4” Engineers vice mounted on the tractor sub frame
Recommended Down the Hole Tooling
60 – 1.8 m EWGB drill pipes
3 – 300 mm EWGB starter rods
20 – 50 mm dia 2 blade drill bits EWGB thread
5 – Vacuum swivels
10 – Vacuum swivel repair kits
10 – AW pin to EWGB box compensating chuck subs
10 – Vacuum flasks
5 – Vacuum flask seals
Spare vacuum hose 20 m
50 – Vacuum filter bags
15 – Tertiary paper filters
Rod cleaning tool