Three-proof needle-punched felt dust collector bags, also known as three-proof dust collector filter bags, refer to the functional additions made to the needle-punched felt fabric. They offer excellent dust collection efficiency, a smooth and flat surface, and are resistant to clogging and deformation, with a long service life. They are suitable for use in factories with high humidity, such as steel mills' blast furnace coal powder spray, cement plants, and coal conveying systems in power plants.

Three-proof needle felt dust collector bags are enhanced with water and oil extraction functions on the basis of static needle felt, and conductive fibers or stainless steel conductive materials are mixed into the chemical fibers used in the production of needle felt. These three-proof needle felt dust collector bags offer corresponding advantages, such as a smooth surface, easy cleaning, and reduced operating resistance. They are suitable for high humidity environments, such as blast furnace coal powder injection in steel mills, cement plants, and coal conveying systems in power plants.

The three-proof needle felt dust collector bag filters resist penetration when in contact with water and oil, preventing clogging. They are suitable for dust collection in high humidity and gas-rich environments, offering excellent performance. They are ideal for applications with high moisture content, such as blast furnace coal powder injection in steel mills, cement plants, and coal conveying systems in power plants.

The three-proof needle-punched felt dust collector bags feature good size stability, strength, and long service life, hence offering advantages such as low resistance and ease of cleaning. They are suitable for applications requiring filtration of fine particles and protection of filters. Polyester three-proof needle-punched felt is far superior in performance to traditional woven filter materials. These dust collector bags are used in industries such as steel, cement, chemicals, carbon black, smelting, asphalt mixing, waste incineration, coal-fired boilers, bamboo and wood products, and cables for smoke purification, dust recovery, and flame-retardant and fire-resistant purposes.

Three-in-one dust collector bags use fine denier fibers during processing, which have reduced pore size, high porosity, and a smooth surface treatment, providing surface filtration effects similar to coated filter materials. Additionally, they are made with high-quality polyester fibers, offering stable performance and enhanced alkali resistance and hydrolysis resistance. Moreover, they have low operating resistance, saving energy.

The advantages of dust collector bags with three-proof design:

1. Excellent dust removal efficiency, capable of capturing particles larger than 0.3nm, achieving air purification down to 15mg/m³ and below.

2. Capable of capturing fine dust that is difficult to recover from electrostatic precipitators, and can collect nitrates, sulfides, and other compounds at the corresponding level.

3. Excellent adaptability to load changes, particularly suitable for capturing fine and tedious dust particles; the collected dry dust is convenient for disposal and recycling applications.

4. Bag dust collectors offer higher safety when collecting dust-laden gases with explosive risks or sparks.

Important Usage Notes for the Dust Bag of a 3-in-1针刺毡 Dust Collector:

Anti-static针刺毡 dust collector bags, under negative pressure, often allow air to leak into the outer shell, which can block the fabric pores on the bag, resulting in ineffective dust cleaning.

Based on the operational conditions and dust characteristics of cement factories, by adding composite conductive materials to reduce static electricity, thereby reducing static electricity generated by friction.

Features of the three-proof needle-punched felt dust collector bag:

1. Low-profile industrial yarns serve as the base fabric, significantly enhancing strength.

2. Choose fine denier fibers, with reduced pore size and high porosity, offering good filtration precision.

3. Polyester fibers are selected, with enhanced hydrolysis resistance.

4. The surface is smooth and has a surface filtration effect with coated membrane filter material.

5. Low operating resistance, energy-saving.

Three-in-one needle-punched felt dust collector bag technical specifications:

Grammage: 500g/m²

Material: Polyester / Polyester-based Fabric

Thickness: 1.8mm

Tensile Strength: >800N/520cm

Tensile Strength in the Winding Direction: >1200N/520cm

Elongation: <35%

Tensile elongation in the warp direction: <55%

Operating Temperature: ≤130℃

Post-processing: singeing, calendering, or Teflon coating

Applications of the three-proof needle felt dust collector bags:

Industrial dusts, once reaching a certain concentration (i.e., the explosion limit), are prone to cause explosions and fires when exposed to static discharge sparks or external ignition factors. For instance, flour dust, chemical industrial dust, and coal dust can all explode upon static discharge. In bag dust collection systems, where these dusts need to be collected using fabric bags, the filter material used to make the dust collector bags must possess certain properties. This is also applicable in environments with high moisture content. Dust collector bags made of tri-proof needle-punched felt can meet these requirements. They have high dust collection rates and can handle high temperatures. All tri-proof needle-punched felt bags are suitable for use in such industrial and mining settings.

Parameters of the three-proof needle felt: