The outlet valve of the acid pump is opened wider, yet the current decreases?
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Dear sea friends, please explain to me: Our company has an acid pump, and when the outlet valve is opened wider, the motor current decreases instead of increasing. What is the reason for this? Thank you
This is the pump in a non-pressurized state, restarting after exhaust.
Let’s first see if the traffic volume can meet the production needs
Is the decline smooth? Is the liquid being transported out?
Is it a centrifugal pump? There seems to be air in the inlet, causing vacuum conditions
It is estimated that there was a negative balance and air in the pump chamber, resulting in a high-load condition, which is not a normal operating state. Once the valve is opened wider, the negative margin is filled in and the air is expelled; this is the normal operating condition. Under normal circumstances, if the flow rate provided by a pump is not required for operation, it is recommended to use a pump with a lower flow rate, as this saves electricity as well as reducing the need for larger equipment and associated maintenance costs.
It turns out that the pressure has been held back all this time; it’s good enough that the motor hasn’t experienced overcurrent
First, you need to determine what type of pump it is – whether it is a centrifugal pump or a positive displacement pump. The two are quite different