1. Selection of Air Compressor

The air compressor is the core power equipment of a pneumatic drilling rig. Its selection should consider the following factors:

1.1 Working Pressure

• Pneumatic drilling rigs typically require high working pressure, usually in the range of 0.7-1.2 MPa, depending on the rig model and geological conditions.

• Ensure the maximum working pressure of the air compressor meets the rig's requirements.

1.2 Air Flow Rate

• The air flow rate is a critical parameter, usually expressed in m³/min or CFM.

• For a 200-meter pneumatic drilling rig, the air flow rate generally needs to be 10-20 m³/min, depending on the rig's power and hole diameter.

1.3 Power

• The power of the air compressor should match the rig, typically ranging from 30-100 kW, depending on the rig model and work intensity.

1.4 Type

• Piston Air Compressor: Suitable for small rigs or low-intensity operations.

• Screw Air Compressor: Suitable for large rigs or high-intensity operations, offering high efficiency and stability.

1.5 Brand and Quality

• Choose reputable brands (e.g., Atlas Copco, Ingersoll Rand) to ensure reliability and after-sales service.

2. Selection of Mud Pump

The mud pump is used to transport drilling fluid, cool the drill bit, and carry cuttings. Its selection should consider the following factors:

2.1 Flow Rate

• The flow rate of the mud pump must meet the requirements of the hole diameter and depth, typically ranging from 100-500 L/min.

• Larger hole diameters require higher flow rates to ensure effective circulation of drilling fluid.

2.2 Pressure

• The pressure of the mud pump must meet the requirements of the drilling depth and geological conditions, usually ranging from 2-5 MPa.

• Deeper holes require higher pressure to overcome formation resistance.

2.3 Power

• The power of the mud pump typically ranges from 5-30 kW, depending on the flow rate and pressure requirements.

2.4 Type

• Piston Mud Pump: Suitable for high-pressure, low-flow conditions.

• Centrifugal Mud Pump: Suitable for high-flow, low-pressure conditions.

2.5 Material

• The flow components of the mud pump (e.g., impeller, pump casing) should be made of wear-resistant and corrosion-resistant materials (e.g., high-chrome alloy or rubber lining).

3. Configuration Recommendations

Below is a typical configuration example for a 200-meter pneumatic drilling rig:

3.1 Air Compressor Configuration

• Working Pressure: 1.0 MPa

• Air Flow Rate: 15 m³/min

• Power: 75 kW

• Type: Screw Air Compressor

3.2 Mud Pump Configuration

• Flow Rate: 300 L/min

• Pressure: 3 MPa

• Power: 15 kW

• Type: Piston Mud Pump

4. Precautions

1. Compatibility: Ensure the parameters of the air compressor and mud pump match the rig to avoid overloading or inefficiency.

2. Geological Conditions: Adjust equipment parameters based on geological conditions (e.g., rock hardness, groundwater conditions).

3. Maintenance: Regularly inspect the air compressor and mud pump, and replace wear parts in a timely manner.

4. Brand and Service: Choose reliable brands to ensure after-sales support and spare parts availability.

If you have specific rig models or working conditions, I can provide more detailed configuration recommendations!