Is there a pump that can handle frequent use?
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Several centrifugal pumps in our company are always operating under vacuum conditions, and the pump casings end up cracking (due to stress). Is there a suitable type of pump for this situation?
It is best to make adjustments to the process and operation; ordinary centrifugal pumps cannot operate under evacuated conditions. If operation under evacuated conditions is required over a long period, a different type of pump must be chosen. Generally, positive displacement pumps can meet your requirements.
Reply to 1# ART1100: I’m not sure what type of medium you are using. If it’s something like oil, an submersible pump can be used, along with a dry-run prevention system that stops the pump automatically when vacuum is detected
Pneumatic diaphragm pumps can be evacuated
Our company is researching it, but it’s a submersible centrifugal pump. It’s not horizontal. If it’s useful, send an email to 15861097119@163.com
The medium is water; the operating conditions cannot be changed, the flow rate is unstable, and the pump is constantly running dry, so centrifugal pumps are not suitable. I want to choose the right pump type.
Reply to 1# ART1100: You should find a solution through process adjustments; basically, no pump can operate in a vacuum condition if you replace it. Although pneumatic pumps and hose pumps can evacuate a volume in a short time, when operated for extended periods, the pumps will be damaged quickly, resulting in high costs.