Product description
LFZK pulse self-cleaning air filters clean the intake air of large air-consuming machines, such as air compressors, gas turbines, oxygen plants, blast-furnace blowers and HVAC supply systems, and they clean themselves while running. Dust-laden air enters through a coarse first-stage box and passes the high-efficiency filter cartridges. The cleaned air flows through venturi tubes into the clean-air chamber and then to the outlet pipe. A PLC triggers a short reverse air pulse of 0.1–0.2 seconds on a timer, when differential pressure exceeds 600 Pa, or by hand, while the remaining cartridges keep filtering. A dust box, dust screen or water-washing arrangement can be added on request to deal with secondary contamination.
Published data cover 225 to 17,600 m³/min of air, initial resistance of 150 Pa or less, and efficiency of 99.96 % at 1 μm and above, 99.99 % at 2 μm and above and 100 % at 3 μm and above. Supply is AC 220 V at 100–200 W, and the cleaning air is 0.4–0.6 MPa. Single-layer models go up to LFZK4400; larger sizes use a double-layer structure assembled from two or four modules. The manufacturer highlights use in sandstorm-prone and high-dust sites.
To select a model, start with the airflow at suction conditions, then check the compressed air supply and the footprint: LFZK225 measures 1.5 × 1.5 × 2.5 m, and the largest models run to 9 × 6.6 × 6.5 m. Send us your site data for a recommendation.
Frequently asked questions
How does the filter clean itself while running?
A PLC triggers reverse pulses of compressed air, timed or based on differential pressure above 600 Pa, or manually. Only the cartridges being cleaned are interrupted, so the equipment keeps running.
What utilities do I need to supply?
AC 220 V power and compressed air at 0.4–0.6 MPa for pulse cleaning. The published cleaning air consumption is 0.1 to 0.3 m³/min depending on size.
Can the design be adapted to my site?
Options such as a dust collection box, a dust screen and a water-washing arrangement for secondary contamination are mentioned in the product information. Please contact us with your site conditions to discuss other adaptations.
What are the minimum order quantity and lead time?
Minimum order quantity and lead time depend on the model, options and order size. Please contact us to confirm.
- Model series
- LFZK (single-layer LFZK225 to LFZK4400; double-layer LFZK5200 to LFZK17600)
- Application
- Air compressor stations, oxygen plants, HVAC supply air systems, gas turbines, blast-furnace blowers
- Medium
- Airborne particles and dust
- Air filtration volume
- 225 to 17,600 m³/min (suction condition)
- Initial resistance
- ≤ 150 Pa
- Filtration efficiency (published)
- ≥ 1 μm: 99.96 %; ≥ 2 μm: 99.99 %; ≥ 3 μm: 100 %
- Power supply
- AC 220 V
- Power consumption
- 100 W (LFZK225–LFZK900); 150 W (LFZK1000–LFZK4400); 200 W (double-layer models)
- Cleaning air consumption
- 0.1 m³/min (LFZK225–LFZK900); 0.2 m³/min (LFZK1000–LFZK4400); 0.3 m³/min (double-layer models)
- Cleaning air pressure
- 0.4–0.6 MPa
- Cleaning triggers
- Timed, differential-pressure (PLC control above 600 Pa) or manual; pulse duration 0.1–0.2 s
- LFZK225
- 225 m³/min · single layer · 1 module · 1.5 × 1.5 × 2.5 m · 1.6 t
- LFZK300
- 300 m³/min · single layer · 1 module · 1.8 × 1.5 × 2.5 m · 1.9 t
- LFZK380
- 380 m³/min · single layer · 1 module · 2.1 × 1.5 × 2.5 m · 2 t
- LFZK500
- 500 m³/min · single layer · 1 module · 2.1 × 1.8 × 2.5 m · 2.4 t
- LFZK625
- 625 m³/min · single layer · 1 module · 2.1 × 2.1 × 2.5 m · 2.8 t
- LFZK900
- 910 m³/min · single layer · 1 module · 2.9 × 2.1 × 2.5 m · 3.2 t
- LFZK1000
- 1000 m³/min · single layer · 1 module · 3.3 × 2.1 × 2.5 m · 3.7 t
- LFZK1250
- 1250 m³/min · single layer · 1 module · 4.1 × 2.1 × 2.5 m · 4.2 t
- LFZK1500
- 1500 m³/min · single layer · 1 module · 4.9 × 2.1 × 2.5 m · 4.7 t
- LFZK2100
- 2100 m³/min · single layer · 1 module · 5.8 × 2.4 × 2.7 m · 6 t
- LFZK2500
- 2500 m³/min · single layer · 1 module · 6 × 3 × 2.7 m · 7 t
- LFZK3000
- 3000 m³/min · single layer · 1 module · 6 × 3.3 × 2.7 m · 8.5 t
- LFZK4400
- 4400 m³/min · single layer · 1 module · 9 × 3.3 × 2.7 m · 12 t
- LFZK5200
- 5200 m³/min · double layer · 2 modules · 6 × 3.3 × 6.5 m · 14 t
- LFZK6000
- 6000 m³/min · double layer · 2 modules · 6.4 × 3.3 × 6.5 m · 15 t
- LFZK7200
- 7200 m³/min · double layer · 2 modules · 7.2 × 3.3 × 6.5 m · 18 t
- LFZK7600
- 7600 m³/min · double layer · 2 modules · 7.6 × 3.3 × 6.5 m · 20 t
- LFZK8800
- 8800 m³/min · double layer · 2 modules · 9 × 3.3 × 6.5 m · 24 t
- LFZK12000
- 12000 m³/min · double layer · 4 modules · 6 × 6.6 × 6.5 m · 28 t
- LFZK14200
- 14200 m³/min · double layer · 4 modules · 7 × 6.6 × 6.5 m · 35 t
- LFZK16000
- 16000 m³/min · double layer · 4 modules · 7.6 × 6.6 × 6.5 m · 40 t
- LFZK17600
- 17600 m³/min · double layer · 4 modules · 9 × 6.6 × 6.5 m · 50 t