Case study of over stress failure of blowdown pump electric machinery and deal with method

Shandong Hairui Zhonglian Pump Industry Co. , ltd. The blowdown pump that is a major produces manufacturer. When type selecting of client blowdown pump, manufacturer of my company water pump can provide the before-sales service such as price of pump of blowdown pump model, blowdown, in order to offer client reference, and manufacturer of my water pump can provide the service of product of custom-built pump industry for the client. This product information is reach about case study of over stress failure of blowdown pump electric machinery deal with methodological knowledge:

The reason with blowdown pump overweighted motor:
1. pump shaft and electric crankshaft are not homocentric;
2. turn coming back does not turn, machine press too closely, sliding bearing space is too little;
3. pump shaft bends;
4. bearing damages badly;
5.Blowdown pumpRotate speed is too big;
Prep above of 6. liquid viscosity provides a value;
Prep above of 7. liquid density provides a value or have crystallization;
8. impeller and pump case clearance cross young generation to chafe.
Handle way:
Of 1. readjust pump and electric crankshaft homocentric degree;
2. tone is overall spend closely, increase the gap amount of sliding bearing;
The flexibility of 3. alignment axis;
4. changes bearing;
5. adjusts electric machinery rotate speed or change electric machinery accords with Yu Ming card to give factory level;
Viscosity of 6. attenuant liquid, accord with craft to carry a requirement;
7. joins thinner to reduce density, heat eliminate crystallization;
8. adjusts the clearance between blowdown pump impeller and housing, eliminate attrition.
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