Their advantages
- Vacuum filter for medium volume flows
- Correct separation of dirty/clean side
- Wide range of filter fleeces
- Dry filter cake
Vacuum filter / Negative-pressure filter
Suction belt filter SAFI-E (fleece filter)
The POLO suction belt filters, SAFI-E series are used for applications up to max. 3000 litres per minute. They are used as stand-alone filters or to supply machine groups. This high-performance system cleans liquids fully automatically, especially emulsions and oils from metal processing.
Short info
- Compressed dirt cake, dry, stab-proof
- 10 different sizes
- Energy-optimised by FU control
- Precise lateral seals
Increased volume throughput
The POLO SAFI-E suction belt filter is equipped with an exhauster that creates a negative pressure in the filter cleaning chamber. The flow rate is significantly increased, the filter cake builds up higher and serves as an additional “filter layer”. The degree of purity of the filtration is increased. The filter can be adapted to any new task by easily and quickly changing the fleece.
Design
The filter housing consists of a high-quality welded steel or stainless steel construction. A transport chain carries the filter fleece through the filter bed. An exhauster generates the negative pressure in the vacuum chamber and thus significantly increases the flow rate per square feet (square metre) of filter surface. The cleaned cooling lubricant enters the clean chamber from where it is discharged into the clean tank by means of a pump. The functions, triggered by float switches, are controlled by a control box.
Function
The medium is calmed and fed to the filter by the inlet distributor, flows through the filter medium and reaches the vacuum chamber (clean chamber) cleaned. The filter discharge pump sucks the medium out of the vacuum chamber and conveys it into the clean tank.
The exhauster creates a negative pressure in the vacuum chamber. This negative pressure supports the flow rate considerably and results in a better utilisation of the filter medium due to a higher dirt cake build-up. The built-up filter cake provides an additional, high-quality filter layer and thus improves the degree of filtration.
As the filter aid becomes increasingly dirty, the liquid level on the dirty side of the filter rises. The fleece pre-stroke occurs at a preset liquid level. The filter cake discharged with the fleece is dried additionally by the exhaust air of the exhauster. The filtration process is not interrupted during the fleece pre-stroke. An additional buffer tank for intermediate storage of the dirty cooling lubricant is not necessary!
not necessary!
The built-up filter cake is a valuable filter aid and significantly improves the degree of purity. Due to the short stroke steps, this “precoat medium” is almost completely preserved and the degree of purity remains unchanged.
Precise sealing
Compact design
Lightweight fleece usable
Made in Germany
Variety of materials
Process safety
Picture gallery
Suction belt filter SAFI-E fleece version
Suction belt filter SAFI-E fleece version
Suction belt filter SAFI-E fleece version
Inlet distributor
Exhauster
Exhaust air damper
Float switch -clean side / vacuum tower
Compressed air maintenance unit
Float switch - filter dirt side / fleece shortage switch
Float switch - filter dirt side
Data sheet
| Standard sizes | SAFI-E0.8 | SAFI-E1.3 | SAFI-E1.5 | SAFI-E1.7 | SAFI-E2.1 | SAFI-E2.5 | SAFI-E3.1 | SAFI-E3.6 | SAFI-E4.1 |
|---|---|---|---|---|---|---|---|---|---|
| Mounting dimesion L x W | 1250 x 1140 | 1750 x 1140 | 2000 x 1140 | 2250 x 1140 | 2750 x 1140 | 3250 x 1140 | 3850 x 1140 | 4500 x 1140 | 5000 x 1140 |
| Lenght | 1850 | 2350 | 2600 | 2850 | 3350 | 3850 | 4450 | 5100 | 5600 |
| Width | 1450 | 1450 | 1450 | 1450 | 1450 | 1450 | 1450 | 1450 | 1450 |
| Height | 1500 | 1500 | 1500 | 1500 | 1500 | 1750 | 1750 | 1750 | 1750 |
| Weight approx. (kg) | 1040 | 1165 | 1235 | 1290 | 1415 | 1620 | 1760 | 1925 | 2040 |
| Volume approx. (litres) | 345 | 615 | 750 | 890 | 1160 | 1435 | 1760 | 2115 | 2385 |
| Flow rate max. (l/min) emulsions* | 500 | 930 | 1100 | 1250 | 1550 | 1850 | 2300 | 2675 | 3050 |
*Definition of flow rate: Emulsions and aqueous media approx. 1 mm²/sec at 20 °C and oils up to 15 mm²/sec at 20 °C.
The maximum flow rate of the filter is indicated; depending on the machining process and the degree of contamination, the flow rate may be lower.
Subject to technical changes in the interest of progress.
