Products Description
LEANOMS
A Down The Hole Drill Hammer is a specialized drilling tool used in various industries, including mining, construction, geothermal drilling, and exploration. It is designed to create holes in hard rock and other challenging geological formations by using a percussive drilling method.
failure analysis
LEANOMS
The check valve is a critical component in Down The Hole Drill Hammer accessories, and its role is essential for the proper functioning of the hammer during drilling operations. Here's an explanation of the role of the check valve in a DTH hammer:
1. Controlling Air Flow:
The primary function of the check valve in a Down The Hole Drill Hammer is to control the flow of compressed air that powers the hammer's piston. Compressed air enters the hammer through the air inlet, and the check valve ensures that this air flows in the desired direction.
2. Timing the Percussive Action:
The check valve plays a crucial role in timing the percussive action of the hammer. It regulates the release of compressed air into the hammer's internal chamber. When the piston moves downward, it compresses air within the chamber. The check valve prevents the air from escaping too soon, ensuring that it's released at the right moment to create a high-velocity blow on the drill bit.
3. Preventing Reverse Air Flow:
Another critical role of the check valve is to prevent reverse air flow within the hammer. After the piston moves upward to create a percussive blow, the check valve prevents the air from flowing back up into the air inlet. This one-way flow ensures that the percussive action is consistently directed downward towards the drill bit.
4. Efficient Energy Transfer:
By controlling the timing and direction of the compressed air flow, the check valve contributes to the efficient transfer of energy from the compressed air to the piston and, ultimately, to the drill bit. This energy transfer is essential for breaking and fracturing the rock or geological formation during drilling.
5. Enhancing Precision and Performance:
The precise operation of the check valve is critical for the overall performance and efficiency of the Down The Hole Drill Hammer. Properly timed and controlled percussive blows result in accurate and efficient drilling, allowing for straight and high-quality boreholes.
Application
LEANOMS
All impactors require lubricating oil to prevent wear, dry friction and corrosion. In addition, all internal parts are covered with an oil film, which seals internal clearances and reduces "predatory" leaks through these voids. As a general rule, lubricants should be proportioned to a volume of high-pressure gas as a carrier.
For dry drilling (water injection volume is less than 2gpm, (7.61)pm)), it is usually recommended to inject 1/3pints (0.16 liters) of lubricating oil per 100scfm (2.8m3/mm) of air per hour. For example, for a 900scfm (25.5m3/mm) air compressor, if all its airflow is provided to the impactor, it will require 900÷100×1/3=3 pints (1.6 liters) of lubricating oil per hour.
For wet drilling (water injection volume less than 2gpm, (7.61)pm)), the generally recommended lubricant injection rate is 2/3 pint (0.32 liters) per 100scfm (2.8m3/mm) of air per hour. of lubricating oil. Due to the leakage and oil loss caused, additional lubricant is required to compensate. When there is foam around the drill hole, more lubricant oil is also required.
Specification
LEANOMS
Technical Parameters Of SD6 DTH Hammer Bits:
| Drill Bits | Diameter | Gauge Buttons (mm) |
Front Buttons(mm) | Weight(KG) | Part Number | ||||
 |
mm | Inch | Flat Face | Convex Face | Concave Face | Face Type | |||
| 165 | 5 1/2 | Φ18*8 | Φ16*8 | / | / | Flat Face | 26.3 | LR-SD6-165FF | |
| 165 | 5 1/2 | Φ18*8 | Φ16*4 | Φ16*4 | / | Convex Face | 26.1 | LR-SD6-165CV | |
| 165 | 5 1/2 | Φ18*8 | Φ16*4 | / | Φ15*4 | Concave Face | 25.8 | LR-SD6-165CC | |
| 171 | 6 3/4 | Φ18*8 | Φ16*6 | / | Φ16*4 | Concave Face | 26.5 | LR-SD6-171CC | |
| 178 | 7 | Φ18*8 | Φ16*6 | / | Φ16*4 | Concave Face | 27.1 | LR-SD6-178CC | |
| 190 | 7 1/2 | Φ18*10 | Φ16*8 | / | Φ16*5 | Concave Face | 28.6 | LR-SD6-190CC | |
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