I need to pump a thick slurry from a tank. The slurry can be pumped, but won't flow well enough that I can use a suction pump from outside the tank. Normally, I'd use a centrifugal immersion pump that can be drawn from the tank for service. But with the thick slurry I need to use a PD pump.
One option that I'm looking at is a monopump housed in a long pipe, so the rotor/stator packet is submerged and operated by a long shaft in the pipe. But this will probably get expensive and I'm open for other options. Another consideration is ease of service, the immersion pump linked above would have to be lifted with a crane out of the tank for service.
The application is agricultural / bio-energy; tank depth is 4m.
So I'm looking for a PD pump that is ...
- capable of pumping thick slurries
- can be put into my sump pump and retrieved for service with low effort (which probably rules out long driveshafts)
I'm mostly hunting for ideas, no need for a concrete product recommendation.