PORTABLE FILTER UNITS
Five models are available in portable/fixed form. All are heavy duty, rugged, full flow- through filtration with wide micron range + dirt level. They can be used for oils/coolant/glycol etc. with suitable elements. Though filtration is possible in single pass, recirculation ensures complete cleaning. Vigorous circulation also removes all dirt accumulated at tank bottom (not done by ELC).
By regular use of these units, various machine oils can be kept sparkling clean, avoid disposal, also reduce consumption of original small imported filters. These can then be made of SS mesh washable 25/50 micron. This is the lowest cost, safe option w/o maintenance problems.
Typical use – once a month for 4-8 hrs per tank! Thus single unit can serve 25-50 machines.
This is the best choice for shop floor of engg. industry. Comparison is given with other types.
Target dirt level (w/o ELC) < 10 mg/lit, NAS < 7. (ELC can be used for further reduction if reqd.)
The unit can be used for aq. coolant etc. by using centrifugal pump and epoxy coated housing.
Rating: 40 LPM, 7 Bar, 40oC, 1-500 micron.
The unit consists of: Filter Housing(FH-31)–200 ID x 600 mm L, 1” connections, MS + PU paint.
Pump – CI, gear type with motor (1 HP, 3 Ph, 50/60 Hz, 1440/1730 rpm, TEFC)
Interconnecting piping, base frame, castor wheels, suction/delivery hoses
Pressure gauge, drain valve, vent valve, suction strainer
Electric Panel with switch fuse + starter
Overall size – 0.7 x 0.7 x 1 m. Empty weight – 100 Kg
Filter Element: Size- 70 ID x 150 OD x 450 mm L. MS + zinc plated parts
SP–32C/D SS mesh 50/25 micron, all SS for all uses
CP–32A/B Paper media 25/10 micron for oils only
PP–32A/B PE felt media 25/10 micron for coolant/glycol
GP–32 MG media 1-5 micron for all uses
This is designed for 2 levels of filtration – to be used independently in series.
2 housings as above, dedicated for specific elements, to avoid changing element in single unit.
Model 1D
Rating: 20 LPM, 7 Bar, 40oC, 1-500 micron
Filter Housing (FH-22)–150 ID x 600 mm L, 0.5” connections, MS + PU paint.
Pump – CI, gear type with motor (0.5 HP, 3 Ph, 50/60 Hz, 1440/1730 rpm, TEFC)
Overall size – 0.5 x 0.5 x 0.85 m ht. Empty weight – 50 Kg
Spare Filter Element: Size 30 ID x 100 OD x 250 mm L- 2 reqd.
SP–21C/D SS mesh 50/25 micron, all SS for all uses
CP–21A/B Paper media 25/10 micron for oils
PP–21A/B PE felt media 25/10 micron for coolant, glycol
GP–21 MG media 5 micron for all uses
2 Stage Unit: Model 2D – As above with 2 housings, 2 paper + 2 MG media elements.
Rating: 10 LPM, 5 Bar, 40oC, 1-500 micron
Filter Housing (FH-10)–120 ID x 300 mm L, 1” connections, AL bowl type.
Pump – CI, gear type with motor (0.25 HP, 1 Ph, 50 Hz, 1440 rpm, TEFC)
Overall size – 0.4 x 0.4 x 0.6 m ht. Empty weight – 20 Kg
Spare Filter Element : Size 50 ID x 100 OD x 200 mm L- 1 reqd.
RF-10S SS mesh 50/25 micron, all SS for all uses
RF-10A/B Paper media 25/10 micron for oils
RF-10P PE felt media 25/10 micron for coolant, glycol
RF-10G MG media 5 micron for all uses
Model 2 Model 3
COMPARISON OF OUR PORTABLE FILTER UNIT WITH OTHER TYPES
- High speed centrifuge (Alfa Laval type) – this is strictly meant for oil-water separation.
With the limitation of 25 micron rating, high cost and power consumption, it is not at all suited for solid dirt removal. Without recirculation, dirt removal is negligible. Regular basket centrifuge with thick woven filter cloth gives better results for cutting oil reclamation, etc.
- Pump driven centrifuges are popular for engine oil cleaning with dedicated recirculation.
They are not suited for other use due to very slow dirt removal/pass and 25 micron rating.
3. Electrostatic Oil Cleaner (ELC) is capable of removing dirt down to 1 micron. But they have been pushed in the market for filtration much above 5 micron where flow-through filtration is far more efficient + economical. One dedicated ELC unit is reqd. for each power pack with 24 hr operation!
| ASPECT | OUR FILTER UNITS | ELC UNITS |
| Use | Any oil/coolant/glycol | Only low viscosity oil w/o additives |
| Dirt load | No limit | Must be below 200 ppm |
| Moisture | No problem | Must be below 200 ppm |
| Temperature | 20-70 | 30-40 |
| Pressure | 7 bar | Atm |
| Dehydration | Not reqd. | Compulsory with elaborate process |
| Speed | Extremely rapid with high flow + flow-thru filtration | Extremely slow with small pump and slow particle movement across |
| Tank bottom dirt | Removed by high circulation. | Not removed. |
| Filter Stability | Permanent dirt capture | Temporary, dirt can reverse into oil |
| Single pass | Possible | Not possible |
| Oil pressure transfer | Possible | Not possible |
| Use of SS mesh washable | Possible | Not possible |
| Filtration level | 5-500 micron | 1-5 micron, inefficient > 5µ |
| Dirt holding capacity | High due to thru flow, pr. | Very low due to parallel flow, no pr. |
| Consumable cost* | Low due to thru flow Rs 2-5/lit | High due to parallel flow Rs 10/lit with low dirt level |
| Power cost* | Lower due to speed, time 5 kwh/kl | Higher due to slow, 24 hr use.30 kwh/kl |
| Capital cost* | Very low due to capacity Rs 1500/lpm Can serve 20-30 m/c. | Very high, many units also reqd Rs 10000/lpm Can serve 1-5 m/c. |
| Tank Capacity | 5 kl/day, multiple use Bigger units available. | 100 lit/day Must be dedicated for large tanks.Not available >10 lpm, 100 L |
| Maintenance | Little, conventional Rugged design | Costly replacement of power pack Delicate unit. Special time sequence Reqd. to prevent oil recontamination |
Conclusion: If pre-filtration is carried out with 5 µ paper/MG filter (built-in or independently) ELC can be utilized efficiently when very high degree of cleanliness if reqd. for high pr. hydraulics.
Our unit can remove >95% of dirt and get best performance of ELC!
Target dirt level w/o ELC- < 10 mg/lit, NAS 6-7; with extra ELC- 1 mg/lit, NAS 4-5.
(*cost estimates given depend on dirt level in oil; ELC is actually not usable for high dirt levels)
NOTES:
SS mesh media – for all uses, washable Paper media- for oils
PE felt media- for coolant/glycol MG media- for all uses, w/mesh support
Complete Unit can be supplied in SS304/316, with Flameproof motor + switchgear.
We can supply Custom-made unit of any non-std. specs, layout.
Above Prices are ex-works, Chinchwad, Pune. Freight + Taxes as applicable