Causes and remedies for excessive shaft power in HJQ56J shear pump
The HJQ56J shear pump is a crucial piece of equipment widely used in various industries. However, during its operation, an issue of excessive shaft power consumption may arise. This article aims to explore the potential causes behind this problem and provide effective remedies to resolve it.
Causes:1. Friction between Impeller and Pump Casing or Impeller and Liner:
Excessive friction between the impeller and pump casing or impeller and liner can lead to an increase in shaft power. This could be caused by misalignment or prolonged usage resulting in wear and tear.
2. Operation at Significantly Lower Head Conditions Than Design Point:
Operating the pump at significantly lower head conditions than its design point can reduce its efficiency, resulting in higher shaft power consumption.
3. Over-Tightening of Packing Gland:
Over-tightening the packing gland can create unnecessary resistance, leading to increased shaft power demand.
4. Belt Slippage:
Belt slippage can decrease the pump's transmission efficiency, resulting in higher shaft power consumption.
Remedies:1. Adjust the Clearance between Impeller and Pump Casing, Impeller and Liner, or Auxiliary Impeller:
Inspect and adjust the clearance between the impeller and pump casing, impeller and liner, or auxiliary impeller to eliminate excessive friction.
2. Verify Matching Equipment and Adjust Discharge Valve to Operate at Design Point:
Ensure that the connected equipment matches the pump's requirements and appropriately adjust the discharge valve to operate the pump at its design point.
3. Re-adjust Packing Gland Tightening Force:
Re-adjust the tightening force of the packing gland appropriately to avoid excessive resistance.
4. Tighten the Belts (Check for Proper Belt Pulley Installation):
Regularly check for belt slippage and adjust the tension as needed to maintain efficient belt transmission.
In case of excessive shaft power in the
HJQ56J shear pump, a thorough investigation of the root causes is necessary, followed by the implementation of the appropriate remedies. Only by ensuring the proper functioning of the pump can it continue to play a vital role in various industries.
