Analysis of Causes for Overheating of Gear Pump Motors

The gear pump is suitable for conveying lubricating oil with no solid particles and fibers, non-corrosiveness, temperature not higher than 80°C, viscosity of 5×10-6 to 1.5×10-3m2/s (5-1500 cSt) or the like. Oil other liquids and used in hydraulic rotary system. Petroleum. Chemicals. Metallurgy. Mine. Power station and other industries oil medium transfer. Boost. Fuel injection, etc., and large mechanical equipment in thin oil cycle, in various types of machinery and equipment Can be used in lubrication pumps.

The overheating of the motor is a problem that frequently occurs during the working process of the gear pump. Specific analysis and detection are as follows:

1. The use range (flow rate head) exceeds the gear pump design requirements?

Select the appropriate motor according to the series model. 2. The dielectric specific gravity exceeds the gear pump configuration motor?

Configure a suitable motor for large gear pump. 3. Too tight packing pressure or mechanical seal. Too tight spring adjustment?

Re-adjust the spring compression of the gland or mechanical seal 4. Pump assembly quality is poor, there is friction or motor and pump shaft misalignment?

Check assembly quality and eliminate assembly failures?

The above conditions can be analyzed one by one to find out the real cause of the overheating of the motor and repair it according to the corresponding fault.