Is there a compact device which can trade flow rate for lift height without too many moving parts?
My particular application is a 10 meter deep and 10 centimeter wide well with shallow water level, therefore the usual high-powered well pumps run dry too quickly. Submersible pumps with low flow rate, high working lifetime and sufficient pressure do not seem to exist. But even if such pumps did exist, I would still be interested in an answer from an academic point of view. Maybe there is a solution without any moving parts at all? That would be neat!
Ideas I discarded so far:
A hydraulic ram pump seems to requires a high flow rate and long feed lines.
Daisy-chaining multiple small pumps with low pressure multiplies failure rate. (I tried five pumps of type AD20P-1230D with a head of 2 meter each, but the rated 50,000 hours lifetime is highly optimistic.)
A water wheel driving a chain pump sounds like a maintenance nightmare due to the mechanical nature of the chain pump and it is also not very compact (disregard the cow in the following illustration).