DMF (dimethylformamide) transport problem
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Which type of pump is better for transporting DMF? Currently, diaphragm pumps and centrifugal pumps are being used. However, neither the mechanical seal nor the diaphragm is durable. The pipeline is made of 304 stainless steel
You might try a magnetic pump. Magnetic pumps have no leakage points. The initial cost is higher, but if the materials are clean and free of impurities, and it isn’t running idle, it is very durable.
If the pressure is not high, the flow rate is acceptable, and the temperature is suitable, then from an economic perspective as well as considering the chemical properties of DMF, a shielded pump should be the preferred choice.
Use a sealless magnetic pump for worry-free safety.
By reading what the group members have written, it’s clear that both sealless centrifugal pumps and magnetic pumps as well as shielded pumps fall into this category. But in my previous post I recommended magnetic pumps – why such specificity? Just because of the flash point, the motor that is insulated is also located in the liquid; when the machine stops, the flow of liquid ceases, and the residual heat from the motor also affects that liquid. Can the temperature rise be controlled? For media with a relatively low specific heat, magnetic pumps should be chosen whenever possible; one should not seek cheap alternatives. I’m not selling you a pump; my skills are limited, so these are just suggestions based on personal experience
Shielding pump used in DMF units
Can’t magnetic pumps run without load? After pumping the material, there are inevitably a few seconds of idling time, right?
The so-called idling occurs when driving when there is no proper flow of liquid, or when the liquid level in the tank ahead of the pump is insufficient; it stops naturally when the vehicle comes to a stop, which is normal