Material pumping under negative pressure using a peristaltic pump
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I have a material tank that is under negative pressure, with an absolute vacuum level of around 2 kp. If I want to draw material out from the bottom of the tank, can I use a peristaltic pump? A hole is made at the bottom of the tank to connect to the inlet hose of the peristaltic pump; another tank is connected to the outlet, and under the same negative pressure system, a pressure difference exists – the vacuum level at the pump outlet is higher than that at the inlet. Can a peristaltic pump operate normally in this situation? In my estimation, the material extraction speed should be slightly higher than the values under normal pressure. I expect to choose a silicone tube with a wall thickness of 2.4. I would appreciate it if experienced colleagues could give some advice. Thank you!
Can this operating condition pull the code? How can material be drawn in when the tubes get flattened under negative pressure?
Use a diaphragm pump; small peristaltic pumps aren’t suitable. Do industrial peristaltic pumps also have a very short lifespan under high negative pressure?