Eight rules for trouble-free operation of BWCB insulated gear pump 1. No idling operation. Because BWCB insulated gear pump runs out of liquid, the sliding bearing of pump chamber will lose lubrication and wear quickly under high-speed running conditions. The internal magnetic rotor magnetic eddy current cutting magnetic field generates enough heat to demagnetize the magnet. Eight rules for trouble-free operation of BWCB insulated gear pump
1. It is forbidden to run idling. Because the BWCB insulated gear pump runs out of liquid, the sliding bearing of the pump chamber will lose lubrication and wear quickly under high-speed running conditions. The internal magnetic rotor magnetic eddy current cutting magnetic field generates enough heat to demagnetize the magnet. Although some BWCB insulated gear pump factories claim that their gear pumps can withstand idling, there is a premise, this is the time to withstand idling, only 3-5 minutes of no load.
2. Prohibit long-term valve closing operation When the flow rate is close to zero, the power required by the impeller is not zero, and the power obtained on the impeller is converted into heat, which causes vaporization. Botaibang follows the bearing heating and wear, and the rotor and the isolation sleeve friction generate high temperature demagnetization.
3. Avoid cavitation freely change the pipeline, change the liquid level of the conveying medium, and the non-constant temperature of the medium will change the effective NPSH of the pump, which is easy to generate cavitation. In a short period of time, cavitation will cause the gear pump to be scrapped.
4. Prohibit long-term operation under extreme flow conditions
The BWCB insulated gear pump operates at the flow rate specified by the principle and can result in excessive bearing loads.
5. Do not exceed the rated temperature difference
BWCB insulated gear pump should regularly monitor the temperature change during use and should not exceed the rated temperature.
6. Avoid thermal shock The general pump heating or cooling rate can not be greater than 10 degrees Celsius / minute.
7 start the magnetic pump after filling
Before the BWCB heat preservation gear pump is used, it is necessary to fill the pump cavity with liquid to achieve the effect of exhausting air.
8. Do not reverse
The steering of the BWCB insulated gear pump should be consistent on the nameplate of the pump body, and it is easy to burn the motor in reverse.
If you strictly follow these eight recommendations, you can avoid more than 95% of BWCB insulated gear pump abnormal damage.
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Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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