Introduction of rotary jet drilling tools
Rotary spray tool
Rotary spray drill is a kind of used for transporting slurry, compressed air and water, such as media, under the condition of high pressure of work, to ensure continued tightness and tightness of a drilling tool that is mainly composed of drill pipe, shunt, drill bit, locking device, locking device, pad fork and variable diameter connector, according to different pore forming and the method of use, and can be divided into single jet grouting, double jet grouting with triple rotary spray.
Single jet grouting
The single spinning jet drilling tool is one of the main equipment to realize the single spinning jet technology.It consists of 50 single weight drill pipe or 60 single weight drill pipe, 50 single weight diverter, 50 single weight drill bit, 50 single weight anti-loose device, 50 single weight anti-loose device, 50 pad forks and variable diameter joint sets.
Double rotary spray
The double rotary-jet drill is developed on the basis of single pipe rotary-jet drill.The slurry and compressed air are fed into two separate pipes of the double drill pipe.Make the compression cavitation - %,Vk bit annular nozzle spout, forming a annular jet flow, surrounding the outer side of the high-pressure slurry jet flow.It is composed of 60--- heavy drill pipe or 73--- heavy drill pipe, 60--- heavy diverter, 73--- heavy drill bit, 73--- heavy drill bit, 60--- heavy anti-loosing device, 60--- heavy anti-loosing device, 73--- heavy anti-loose device, 60--- heavy anti-loosing device, 60-- cushioning fork, 73-- cushioning fork and variable diameter joint.
Triple rotary spray
Triple spinning jet was developed on the basis of double spinning jet.It overcomes the disadvantages such as small diameter of reinforcement, easy pipe-stopping, high mechanical abrasion and difficult recovery and reuse of slurry.The high-pressure water, compressed air and slurry are transported to the drill bit through three channels of non-channeling and leakage to complete the injection.It is made up of 73 triple drill pipe or 89 triple drill pipe, 73 triple diverter, 89 triple diverter, 73 triple drill bit, 89 triple drill bit, 73 triple anti-loose device, 89 triple anti-loose device, 73 triple anti-loose device, 89 triple anti-loose device, 73 pad fork, 89 pad fork and variable diameter joint set.
Form a complete set of drilling rig
The above types of rotary jet drilling tools are used together with our xp-20, xp-30a/B series rotary jet drilling RIGS, g-2a drills and md-50 drills (need to be modified).