The centrifugal pump cannot pump material
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There is a mixed liquid in the tank. When it is still, the lower layer is liquid, and the solid is suspended above. The centrifugal pump can transport it. When the stirring is turned on, the centrifugal pump cannot pump out the material. The equipment has a flat bottom cover, the centrifuge pump is 40-25-200, and the flow rate is 6.3 cubic meters. What is the reason and how to deal with it?
At rest, the centrifugal pump pumps the clear liquid from the lower layer, and the centrifugal pump is the starting impeller.
When stirring, is there a negative pressure state inside the jar?
If it can be transported at rest, it means there is no problem with the pump.； If the ingredients are not loaded after stirring, will it become clogged? ?
There are several possible reasons and solutions for the failure of the centrifugal pump to pump material:: 1. Material concentration is too high: If the solid material concentration of the mixed liquid in the tank is too high and exceeds the processing capacity of the centrifugal pump, the centrifugal pump will not be able to pump out the material. The solution is to adjust the solid material concentration of the mixed liquid so that it is within the working range of the centrifugal pump. 2. Pump inlet blocked: The inlet of the centrifugal pump is blocked by solid materials, resulting in the inability to pump materials normally. The solution is to clean the inlet of the pump and keep it smooth. 3. Pump failure: The centrifugal pump itself fails, such as impeller damage or seal failure, resulting in the inability to pump materials normally. The solution is to repair or replace the centrifugal pump. 4. Improper pump selection: The performance parameters of the centrifugal pump do not match the characteristics of the material, resulting in failure to pump. This may be because parameters such as flow, lift or power of the centrifugal pump are not suitable for the material. The solution is to reselect a suitable centrifugal pump. It is necessary to check and troubleshoot according to the specific situation. If the problem cannot be found, it is recommended to ask professionals for on-site inspection and processing. .
Normally, the ingredients can be stirred. If the ingredients are not stirred after stirring, it may be because the stirring speed is too high. Is it possible to reduce the speed to solve the problem?
I don’t understand your process. Is it okay to stop stirring after stirring evenly and then use the pump to deliver?
It may be that after turning on the mixing, the pump cannot be filled by starting the pump directly. It is recommended to fill the pump first and then turn on the mixer.
There is so little information available. 1. When stirring, is the liquid level too low and the static pressure cannot reach the required cavitation margin at the pump inlet? 2. Is the inlet blocked? The particles block the inlet after stirring? 3. Did the can stop being pumped after being held in for a while? 4. It seems that the reducer has an impeller. Is the speed too low and the head cannot be reached? 5. Is the pump fully exhausted?
During stirring, the water inlet is cavitated due to high rotational speed, resulting in no liquid in the pump inlet pipe.； Treatment method: The premise is that the pump is normal, the pipeline is not blocked, and the liquid meets the centrifugal pump delivery conditions. ； Just stop stirring or reduce the stirring speed.