NEWS
03
2020
-
03
What's wrong with the pump, the motor is running normally, but the liquid cannot be sucked up when there is sound?
If it is a plunger metering pump, one may be that the valve is stuck; second, if it is a large flow metering pump, the weight of the valve or the pressure of the spring may be too large, and the pressure at the pump inlet when the plunger is running is lower than this force, and the third is If it is self-priming, it may exceed its self-priming height;
Author:
Do a rough analysis of the following two types of pumps:
If it is a plunger metering pump, one may be that the valve is stuck; second, if it is a large flow metering pump, the weight of the valve or the pressure of the spring may be too large, and the pressure at the pump inlet when the plunger is running is lower than this force, and the third is If it is self-priming, it may exceed its self-priming height;
If it is a diaphragm metering pump, the above three conditions may also occur. In addition, the hydraulic oil in the hydraulic chamber is not enough, and the pump is actually in the state of replenishing oil during operation, but it cannot fail, so it will not be able to suck up. Liquid out.
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2020-03-03
2020-03-03
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