Pump and Filter Selection

[jpwren]

Hi. I'm new here and this sure looks like a great site. I'm in need of a pump to pull hydraulic oil from a sump, send it through a filter, and back into the sump. The oil is low pressure and I only need about 10 gpm of flow, basically just something to continuously cycle the oil throught the filter. Any suggestions on specific pumps and filters that will fulfill my needs?

 

[aspearin1]

What temperature? Viscosity? Do you have an idea of pipe length & diameter you'll need? As for the filter, what do you plan to remove from the oil? What size particle? What is the particle load of the oil, and what sort of filter life would you expect? At 10 gpm, you'd need a rather large set of filters.

I ask these questions, because I've been working on a very similar project, and these are all questions I've had to answer before I could put a legitimate proposal on paper.

In general, you'll likely need a positive displacement pump. A gear pump will no doubt suit your needs. (The same style pump is in your car motor.) But you may be able to get away with a pump that is either lower cost, easier maintenance, ....Do a google search on double diaphragm, screw, piston, peristaltic, vane, gear, lobe... just to name a few. Centrifugal pumps are generally not recommended for viscous fluids. Also check out the Pumps and Fluid Mechanics engineering forum for some great background info, or do a keyword search on positive displacement (PD) pumps. Good luck.

aspearin1

 

[aspearin1]

Correction... That's "Pump Engineering" forum

aspearin1

 

[kcj]

If you are doing an offline filtration and cooling loop, there are many prepackaged units that have the pump, non bypass filter, relief valve, and test ports all in one part number. Either mounted on stands are carts.
k

 

[jpwren]

Thanks for the replies. I just need to clear my calendar and sit down and look into exactly what I need. I thought that if I threw some general guidelines out there someone might have known exactly what I needed.

 

[catboat]

I agree with some of the other posts. Some general data would be helpful. Consider the following as a start:
1.Purpose – What do you want to accomplish?
2.Type of Fluid: Viscosity and Temperature.
3.Volume of fluid to be cleaned.
4.Type of contaminates you what to remove – partial size level (how clean is clean), water removal, solvents etc.
5.Circulation path through holding tank (reservoir). Location of reservoir baffles and in / out ports.
6.Filtering flow rate: determines size of system (Pump inlet 2-4ft/sec, return 6 – 8 ft/sec).
7.Filter: dirt holding capacity
8.Vertical distance above or below reservoir flow level?


Good Luck

 

[sammysparkle]

Hi all,

Would someone here be kind enough to link me to sites where I can posibly get demos of PDMS or PDS software. I need to have some appreciation of these software before making a recommendation to my boss on which to buy.

Thanks in advance for your assistance.

'Sparkle.

 

[MortenA]

You success rate will most like be a lot higher if you dont add such a comment to a random tread in a random group. Try to post this in a CAD group as a new tread.

Best regards

Morten

 

[rmw]

the world is full of vendors who make just such equipment. Why try to reinvent the wheel.

Try

http://www.hilliardcorp.com

as a starting place. They have plenty of competition, (no pun intended, guys.)

rmw