How should a down-the-hole drilling rig work?
Operators of DTH drilling rigs should be trained and instructed by the manufacturer, have a thorough understanding of the structure and performance of the drilling rig, and gain operating and maintenance experience prior to operation. The operation and maintenance manual provided by the Chongqing Chigo DTH Drilling Rig manufacturer is necessary for the operator to operate the equipment. Before operating the machine, it is necessary to read the operation and maintenance manual, and operate and maintain according to the requirements of the manual. When the circulating mud down-the-hole drilling rig works, the mud settles in the sedimentation tank and flows from the wellhead to the bottom of the well. The mud with sand cuttings is pumped from the bottom hole by the sand pump through the drill bit mouth and drill pipe hole, and then sinks back into the sedimentation tank. During clear water excavation, water supply is prohibited before excavation. When you are back in the water, you can drill. To ensure adequate flow, dry well excavation is not performed, drilling for long periods of time requires adding water, extending the pumping time and stopping drilling after the actual drilling.
The essence of down-the-hole rock drilling is to make the impactor dive into the hole during the rock drilling process to reduce the energy loss caused by the impact energy transmitted by the drill rod, thereby reducing the influence of the hole depth on the rock drilling efficiency. To operate large equipment such as down-the-hole drilling rigs, it is necessary to clarify the correct operating procedures.
1. When starting to work, carefully check whether the gas and water pipelines are firmly connected and whether there is any leakage of air or water. Check that the oiler is filled with oil. Check whether the screws, nuts, joints, etc. of each part have been tightened, and whether the uprights are indeed firmly supported
2. When opening the hole, start the motor first, and then pull the push handle of the manipulator when it is normal. Make it get the proper thrust, and then pull the handle that controls the impactor to the working position. After rock drilling, the water valve can be opened to keep the gas-water mixture in the proper ratio. Carry out normal rock drilling work.
3. When the advancing work moves the rod reel to collide with the drill, it is necessary to finish drilling a drill rod. To stop the operation of the motor and stop supplying air and water to the impactor, insert the fork into the drill pipe groove of the drill holder, make the motor reverse the slide plate and move back, disengage the joint from the drill pipe, and then connect two drill pipes, press this Next you loop to work continuously.