Sand filter for pump suction

[mechanicblues]

Hi All,

We have a pump, Q=30 l/s, Hm=350 m. Speed= 1450 rpm, for agricultral irrigation sucking sandy water from a river. The water is too sandy and our pump wears off too quickly. Are there any filtering system for sandy water to be installed on the suction pipe of the pump?

Many thanks in advance.

 

[mjpetrag]

i would just switch to a positive displacement pump instead of having to worry about constantly cleaning the strainer.

-Mike

 

[cvg]

increase the size of the suction line to reduce the velocity below 2 fps. Say 10" or larger

 

[TD2K]

If changing the suction system to lower the velocity and allow the sand to settle out as cvg suggested isn't reasonable you could look at self cleaning backwash filters.

 

[GPRnD]

Or you can upgrade the pump materials.

In the end it comes down to the cost of a filter/settling tank vs the cost of higher grade pump materials.

That's a decision only you can make.

 

[mechanicblues]

Thank you all for your help. I am still waiting for some more solutions.

 

[ccjersey]

Something like this might help a lot.

http://www.riverscreen.com/

 

[Artisi]

Now that looks like a good arrangement to solve many intake problems.

 

[mechanicblues]

Thanks, it seems useful. I will contact that company for details.

 

[MortenA]

i think you should go for a progressive cavity pump. They are not sensible to this kind of problems.

Try e.g.

http://www.seepex.com/

Got good service there once.

Best regards

Morten