downhole drill - 20
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Instruction
The essence of DTH drilling, it is in the process of drilling to dive into the hole of the impact device, to reduce the transfer due to the drill rod impact energy loss caused by work, thus reduce holes deep effect on the drilling efficiency.DTH drilling drilling equipment is DTH drill rig, underground mines in China are commonly used with YQ - 80, YQ - 100 and QZ - 165 type, in consistence coefficient f = 8?14 of the ore-bearing rock drill aperture is 80 ~ 165 mm deep hole, can obtain high drilling speed.
Application
DTH drill rig is impact rotary drill, its internal structure is different from general rock drill, its distribution and agency of piston is independent and the impact, as shown in figure 2.Its front bit direct connection, the backend connection pipe.Impactor when drilling into the hole, through distribution device (valve), make the piston hammer (body) inside the impacter reciprocating motion hit the shank, bit of a hit rock bottom of the hole.High-speed rotary percussion tools in hole, is by a separate slewing mechanism, namely by the motor outside the hole or pneumatic rotating device, the backend via the impact in the drill pipe.Generated when the drilling of rock powder by feng shui vent, the mixed gas flushing of mixed gas is by row of powder injection of the impactor by drill pipe center, then through impacter gas tank into the bottom of the hole on cylinder body.
Usage of application
1, ready to chisel cave chamber, the chamber specification according to the method to determine of the borehole, the general level of the digging holes in the cavity 2.6 2.8 meters high, carved on the hole, next to the hole or tilted hole when the cavity width of 2.5 meters, height is 2.8 3 m.
2, the gas conduit road, lighting circuits to near the working face.
3, according to the requirement of the holes for the design, set up strong pillar.Pillar to mat board on both ends of the up and down, in the horizontal axis and the ring according to a cer
Shandong eight mining machinery co., LTD
Address: Jining city in shandong province, 30 Jin Yu road, jining, shandong, China, drtr
Tel: 0086-0537-2280165
Jining eight mining machinery co., LTD., located on the side of the canal, the hometown of Confucius, the transportation is convenient.Jining eight party mining machinery co., LTD., is southwest's largest sales drilling machinery, rock drill, shotcrete machine, rail equipment, pneumatic and hydraulic tools, mining equipment. Since its inception the company has been in line with the spirit of "innovation first, honest first" to "quality first, service first, reputation first" as the objective, practical for the general customer service, achieve the goal of win-win with the user."Friend", eight side walk cross the world, we are eight people in line with the principle of honest and trustworthy, the common progress of the coal industry, is willing to work with friends, coexistence and common development.
