Gentle experts, have you heard of submersible reciprocating pumps?
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I used to think that submersible pumps were the same as centrifugal pumps, but today I saw a submersible reciprocating pump. After doing some research on Baidu, I found that all such pumps are referred to as submersible pumps; there was no mention of submersible reciprocating pumps. What exactly is this thing? It would be great if there were links or pictures
Out of curiosity, I wonder where this type of pump is needed?