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Can a long-shaft pump replace a centrifugal pump?

2021-01-28View Original

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My factory wants to install quenching equipment, which requires water to be pumped from a pool; the depth of such pools is usually 3 meters. The current design uses a self-priming tank, a bottom valve, and a centrifugal pump. Would it be more durable if a long-shaft pump were used with its shafts fixed at the top and bottom rather than in a cantilevered arrangement? Ease of maintenance is not a concern for now, as some factories have limited space, and a long-shaft pump can save a lot of space
Reply #22021-01-28
Of course, the combination of a self-priming tank + bottom valve + centrifugal pump is effective and durable. The disadvantages are that it requires more space and involves more initial hassle, but it solves the problem once and for all. Long-shaft submersible pumps have a high failure rate and are quite difficult to repair; they are not recommended. The only advantage might be the smaller space they occupy.
Reply #32021-01-28
This post was last edited by CHANGBAISHI on 2021-1-28 at 15:41. Submersible pumps, in particular, have a very high failure rate regarding their mechanical seals. Submersible pumps for wells are also an option to consider. However, it is necessary to ensure that the impurity levels in the water meet the requirements of the pump.
Reply #42021-01-30
The most straightforward approach is to use a sewage pump, selecting the material based on the medium. Come and find me
Reply #52021-02-03
Sure, but you’ll cry – the long-axis pumps have a high failure rate and their product quality is poor.
Reply #62021-02-05
If a long-shaft pump is used to pump clean water, there isn’t much of an issue; but with poor water quality, the shaft bends very quickly
Reply #72021-02-09
:Well, it depends on what type of long-shaft pump it is. Generally speaking, if the material used for a long-shaft pump is of good quality, its price won’t be lower than that of a centrifugal pump
Reply #82021-02-20
It’s better to use a centrifugal pump with a water intake tank; it has fewer failures. Using submersible pumps is troublesome for maintenance, and their failure rate is much higher than that of centrifugal pumps
Reply #92021-03-09
Our vertical self-priming pump occupies roughly the same space as a long-shaft pump and can be installed on top of a tank.
Reply #102021-03-09
I don’t know how you came up with that idea. Do you know that the long-shaft pump will make you cry, cry, cry?

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