Mud Pump Parts for Rotary Drilling RIGS: Methods for Identifying The Quality of Second-hand Equipment Mud Pumps

In the construction of rotary drilling RIGS, the mud pump, as the core component for transporting mud, its performance directly affects the drilling efficiency and construction safety. Second-hand mud pumps have become the choice of some users due to their cost-performance advantage. However, to distinguish their quality, it is necessary to master scientific methods to avoid construction interruptions caused by equipment hazards.

1. Check the degree of appearance wear: Observe whether there are obvious cracks or deformations in the pump body and shell. If there is severe rust or welding repair marks, it may affect the sealing performance and structural strength. At the same time, check whether the connecting bolts are intact, and whether there is any loosening or stripped threads.

2. Test the sealing performance of the seals: After starting the equipment, focus on checking whether there is any mud leakage at the shaft seal and flange seal. Slight leakage may indicate aging of the seals, while severe leakage suggests damage to the sealing structure. Careful selection is necessary.

3. Check the status of core components: Disassemble and inspect the impeller, piston and other core components. If the impeller blades are damaged or the surface of the piston is scratched, it will cause the flow rate of the pump body to decrease. At the same time, check the bearing clearance. Excessive clearance may cause abnormal noises during operation.

4. Monitor the parameters during operation: Use pressure gauges and flow meters to monitor the working pressure and flow rate. If the actual parameters deviate from the rated values of the equipment by more than 10%, it indicates that there is wear or fault inside the pump body, and it cannot meet the construction requirements.

5. Check the equipment maintenance records: Ask the seller for past maintenance and repair records. Equipment that is frequently repaired or has not been maintained for a long time is prone to hidden faults. Give priority to choosing second-hand mud pumps that regularly replace vulnerable parts and maintain them in a standardized manner.

6. Evaluate the overall operational stability: Run the machine for more than 30 minutes after startup to sense the vibration amplitude of the equipment. If the vibration is severe or accompanied by abnormal noises, it may be due to rotor imbalance or improper assembly of components, which could easily cause malfunctions in later use.

In conclusion, to identify second-hand rotary drilling rig mud pumps, it is necessary to take into account appearance inspection, performance testing and historical record verification. Only through multi-dimensional verification can equipment with stable performance and suitable for construction requirements be screened out, reducing later maintenance costs and construction risks.