Dust bag

NegotiableUpdate on 04/22

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Overview

Introduction to Dust Removal Bag: Characteristics of Dust Removal Bag: The fabric and design of the filter bag should strive for * filtration, easy dust stripping, and durable effect

Product Details

Dust bag can be called the heart of bag filter, generally referred to as dust filter bag, dust collection bag, dust accumulation bag, dust removal bag, dust collector bag, etc. The dust removal bag is a crucial part of the operation of the bag filter, usually a cylindrical filter bag suspended vertically in the dust collector.

The fabric and design of dust removal bags should strive for * filtration, easy dust removal, and durability. The selection of dust removal bags is crucial as it directly affects the dust removal efficiency of the dust collector. The selection of dust removal bags should be based on the following factors: gas temperature, humidity and chemical properties, particle size, dust concentration, filtration wind speed, dust cleaning method, etc.

Classification of dust removal bags

Classification Element 1: Processing Method

According to the processing method, it is mainly divided into three types: woven filter dust bag, non-woven filter dust bag, and composite filter dust bag.

1. Machine woven filter bag for dust collector: a filter material woven by weaving warp and weft yarns arranged perpendicular to each other according to a certain organizational rule using a weaving machine, represented by the letter W;

2. Non woven filter material dust collection filter bag: a sheet-like filter material made by directly weaving fibers into a web or layers of yarn without going through the general spinning and weaving process, interlaced, bonded, needle punched, melt blown or spun, represented by a composite letter consisting of the letters NW and specific processing method codes;

3. Composite filter material dust bag: A dust bag filter material made by two or more methods or composite of two or more materials, represented by the letter C.

Classification elements of dust removal bags 2. Fabric structure

According to the fabric structure, it is mainly divided into three types: plain filter dust bag, diagonal filter, and forged filter.

1. Plain weave: This is a simple weaving form where each warp and weft yarn alternates up and down. However, plain weave has disadvantages such as difficulty in cleaning and easy clogging, so it is rarely used as a dust removal filter material;

2. Twill weave: It is formed by interweaving two warp yarns and four weft yarns at the same time, and the interweaving point of the warp and weft yarns gradually moves to the left or right; The twill structure is divided into single-sided twill and double-sided twill; The flexibility and elasticity of twill weave fabric are superior to plain weave fabric, with slightly lower mechanical strength and easy displacement under stress. However, it has good wear resistance, dust removal efficiency, and cleaning effect, and is a commonly used structure for woven filter media;

3. Forging texture: It can be divided into warp forging texture and weft forging texture based on whether warp or weft is visible on the surface of the fabric; The characteristics of forged texture are smooth, glossy surface, very soft, good elasticity and breathability, and easy to clean due to the migration of yarn.

Classification elements of dust removal bags 3, cross-sectional shape of filter bags

According to the cross-sectional shape of the filter bag, it is mainly divided into three types: circular, flat, and irregular.

1. Circular: The dust filter bag is cylindrical in shape. Its specifications are represented by diameter x length, i.e. D x L (mm);

2. Flat shape: The filter bag of the dust collector is flat, including rectangular and trapezoidal shapes, and its specifications are expressed as circumference x length, i.e. P x L (mm);

3. Alien: A filter bag with a unique shape, whose specifications are represented by the characteristic parameters of its construction.

Classification element four, filtering method

There are mainly two types of filtration methods: internal filtration and external filtration.

1. Internal filter dust bag: After the dust containing gas is filtered through the inner surface of the filter bag, the dust is blocked on the inner surface of the filter bag. This filtration method is called internal filter;

2. External filter bag: After the dust containing gas is filtered through the outer surface of the filter bag, the dust is blocked on the outer surface of the filter bag. This filtering method is called external filter.

Dust bag structure design:

Dust removal bags are generally divided into pulse type dust removal bags, vibration type dust removal bags, and back blowing dust removal bags according to different cleaning methods.

According to different shapes, there are also round bag type, flat bag type, and envelope type.

There are different bag opening and bag bottom design options for dust removal bags to choose from.

Characteristics of dust bag:

The fabric and design of the filter bag should strive for * filtration, easy dust removal, and durability.

1. The capillary fiber oil absorbing filter bag consists of three parts: a pre filtration layer, a main filtration layer, and a mesh cover. It is designed specifically for effectively adsorbing oils and fats in liquids. The porosity in the filter material is as high as 80%, greatly improving the service life of the product. The oil absorption capacity can reach 12 to 20 times the weight of the filter bag itself (depending on the characteristics of the fluid and grease, as well as the flow rate)

2. The precision seamless filter bag is formed by hot melt spraying of pure polypropylene capillary fibers. The outer layer is made of thickened deep filtration material to provide layered filtration; The inner sleeve is equipped with a large-diameter filter element to further enhance the overall deep filtration effect and improve the ability to accommodate impurities. The average service life is more than five times that of ordinary polypropylene filter bags. *The high filtration accuracy is 3um. The collar ring is made of plastic.

3. The materials available for the mesh filter bag include nylon monofilament mesh, polyester monofilament mesh, and polypropylene multi strand mesh. *Features of high filtration precision 20um: * filtration precision, high toughness, resistance to damage, no fiber free, reusable.

Dust bag application:

Flue gas treatment and dust removal systems for ironworks, steelmaking plants, ferroalloy plants, refractory plants, foundries, power plants, etc. Flue gas filtration for waste incinerators, coal-fired boilers, fluidized bed boilers, etc. Asphalt concrete mixing, building materials, cement ceramics, lime, gypsum and other production sites. Aluminum electrolysis, filtration of smelting flue gas for lead, tin, zinc, copper and other rare metals, recovery of fine materials, and separation of liquid and solid. Liquid solid separation and fine material recovery in the fields of chemical engineering, coke, carbon black, dyes, pharmaceuticals, plastics, etc. Dust control and purification collection in mining, grain processing, flour, electronics industry, wood processing, etc.