Multi-bag Filter

The multi-bag filter is suitable for large flow filtration. Available from 1 bag up to 24 bags, with a full range of specifications. Inlet/outlet flange diameters range from 3” to 18”. A single unit can handle a maximum flow of 90–1000 m³/h.

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Product Introduction

Quick-opening designs are available, making filter bag replacement extremely convenient. They are also suitable for applications where a longer service time is desired before bag replacement.

Key Features and Applications

Convenient and quick

Bag filters feature large handling capacity, compact size, and high dirt-holding capability.
Based on its working principle and structure, bag replacement is convenient and quick.

Saving labor and time

The filter requires no cleaning, saving labor and time.
The probability of side leakage from the filter bag is very low, effectively ensuring filtration quality.

Low pressure loss

Bag filters can withstand higher operating pressures, have low pressure loss, low operating cost, and significant energy-saving benefits. The filtration accuracy of filter bags continues to improve, currently reaching as fine as 0.5 μm.

Widely applicable

Bag filters are widely applicable, flexible in use, and available in a variety of installation types

Applications

Paints, beer, vegetable oils, pharmaceuticals, chemicals, petroleum products, textile chemicals, photographic chemicals, electroplating solutions, milk, mineral water, hot solvents, latex, industrial water, sugar solutions, resins, inks, industrial wastewater, fruit juices, edible oils, waxes, etc.

Intelligent Operation

Highly automated; only 1-2 operators are needed to complete the entire process.

Parameter Information

Model	Filter Bag Size Number	Number of Filter Bags	Filtration Area	Inlet/Outlet Diameter	Working pressure	Maximum Flow Rate (with viscosity = 1 cP)
DL-2P2S	2	2	1.0	φ50	0.5	70
DL-3P2S	2	3	1.5	φ50	0.5	100
DL-4P2S	2	4	2.0	Φ100	0.5	140
DL-5P2S	2	5	2.5	Φ150	0.5	175
DL-6P2S	2	6	3.0	Φ200	0.5	210
DL-7P2S	2	7	3.5	Φ200	0.5	245
DL-8P2S	2	8	4.0	Φ250	0.5	280
DL-10P2S	2	10	5.0	Φ250	0.5	350
DL-12P2S	2	12	6.0	Φ300	0.5	420
DL-14P2S	2	14	7.0	Φ300	0.5	490
DL-16P2S	2	16	8.0	Φ300	0.5	560
DL-18P2S	2	18	9.0	Φ350	0.5	630
DL-20P2S	2	20	10.0	Φ350	0.5	700
DL-22P2S	2	22	11.0	Φ350	0.5	770
DL-24P2S	2	24	12.0	Φ350	0.5	840

Frequently Asked Questions

Our popular products include: vehicle-mounted sludge solidification units, diaphragm filter presses, sludge dewatering machines, as well as engineering design and installation services for municipal sludge and sand-washing sludge treatment.

How to choose the right filter press model based on material properties?

Selecting a filter press model depends on key material properties: particle size (to determine filter cloth mesh), viscosity (affects required pressure), corrosiveness (dictates filter plate material, e.g., PP for mild corrosion, stainless steel for strong), and solid content (influences filtration area and cycle time). High-solids materials need larger filtration areas, while abrasive materials require wear-resistant plates. Match pressure ratings to material viscosity—thicker slurries need higher pressure (1.0–2.5 MPa) for effective dewatering.

What to do if filter plates leak?

First, stop operation and check:

Filter cloths: Replace damaged or misaligned cloths that disrupt sealing.
Filter plate seals: Inspect for cracks, wear, or debris; clean seals or replace plates if damaged.
Pressure imbalance: Ensure uniform pressure across plates (adjust hydraulic system if uneven).
Plate alignment: Realign plates if shifted during operation. Test with low pressure after fixes to confirm leaks are resolved.

Do filter cloths need regular replacement? How often?

Yes, filter cloths require regular replacement as they clog, tear, or degrade over time, reducing filtration efficiency. Frequency depends on material: 4–8 weeks for abrasive/viscous materials (e.g., mining slurries); 3–6 months for less harsh materials (e.g., food-grade liquids). Signs to replace early: slower filtration, increased pressure, or visible damage (holes, fraying).

Is installation and operation training provided after purchase?

We offer installation and operation training post-purchase. This typically includes on-site installation guidance, hands-on operation training (e.g., setting parameters, troubleshooting), and documentation (manuals, video tutorials). Some provide follow-up support for 1–3 months to ensure operators master key functions, especially for automated or custom models.

If the power supply is not the issue, how to fix the machine tripping and shutting down?

Check these common causes:

Overload: Motor may be overworked (e.g., excessive slurry feed); reduce load or inspect for jammed components (e.g., filter plate movement).
Faulty sensors: Pressure or temperature sensors may trigger safety shutdowns; calibrate or replace malfunctioning sensors.
Hydraulic system issues: Low oil level or clogged filters can cause pressure spikes; check fluid levels and clean/replace filters.
Electrical connections: Loose wires in control panels may interrupt power; tighten connections and inspect for short circuits.