The filter cartridge, the filter element of the filter cartridge is the filter cartridge. The structure of the filter drum is divided into four parts: top cover, metal frame, pleated filter material and base. The filter cylinder is folded into a fold with the design length of the filter material, and the end and end are bonded into a cylinder. The inside and outside of the cylinder are supported by a metal frame, and the upper and lower are fixed with the top cover and the base. The top cover has fixing bolts and washers. When the filter barrel is made, the adhesion of the upper and lower end covers and protective mesh of the filter barrel should be reliable, and there should be no defects such as degumming, leakage and flow hanging; The metal parts on the filter drum should meet the requirements of rust prevention; The outer surface of the filter cylinder should have no obvious scars, bumps, hair and burrs and other defects.

Induction nozzle or Wenn tube and other injection devices can be used in the spray cleaning of the filter cylinder as required. The inside of the filter cylinder should be equipped with a protective net. When selecting D2320mm and H21200mm filter cylinder, the induction nozzle should be used.

The volume of the finished product of the cylinder has a great relationship with the volume of the filter. The following requirements are often put forward for the use of cylinder dust collector: ① the total height of the dust collector and the distance between the inlet and outlet (width); ② Total body height under the filter barrel

And diameter; (3) the total mass of the filter cylinder; (4) Air outlet connection mode and size; ⑤ A series of performance requirements related to filtration characteristics, such as filtration accuracy

There are two types of filter material for the filter drum: one is synthetic fiber filter material, one is paper filter material. Synthetic fiber nonwoven filter material. According to the processing technology can be divided into continuous fiber spunbonded polyester hot pressing and short fiber spunbonded polyester hot pressing two categories. Filter material surface waterproof treatment conditions, waterproof treatment of the filter material after the infiltration Angle should be greater than 90 degrees, water grade is not less than Ⅳ.

Filter material oil - proof treatment condition, filter material to do oil - proof treatment. Polyester nonwoven filter material can withstand the working temperature of not less than 120℃. For other special conditions such as high temperature and high humidity, the selection of filter cylinder material structure should meet the application requirements.

Paper filter media can be divided into low permeability and high permeability two categories. In addition, there are synthetic fiber nonwoven PTFE coated filter material and paper PTFE coated filter material.

Technical requirements for filter cartridge

1. When the continuous fiber spunbond method is used for hot pressing process, the micro-pore structure of the filter material should be tight, and the stiffness should not be less than 20mN with surface filtration mechanism.

2. When spinning bonding polyester hot rolling process is used, the stiffness treatment of the filter material should meet the stiffness requirements, and the filter material should not change color and have no color difference.

3. When the filter material is used for humid dust conditions, the filter material should be treated with waterproof surface. The hydrophobic property of the filter material is determined in accordance with the provisions of GB4745-1997.

4. When the filter material is used in the condition of oily dust, the filter material should be treated with oil-proof surface, and the treated filter material should conform to the provisions of GBW04015-1989.

5. When the filter material is used in the condition of antistatic dust removal, the filter material should be treated with antistatic, and the treated filter material should conform to the relevant provisions of GB12625-1990.4.6.

6. Maximum continuous working temperature of synthetic fiber non-woven filter material is 120℃.

7 polyphenylene sulfide (Ryton) incense polyamide (Nomex) fiber viscotic filter material maximum continuous operating temperature 190° C.

The filter mechanism of filter drum filter material mainly includes: interception effect, gravity effect, inertia effect, diffusion effect, electrostatic effect and so on. Interception effect: the internal arrangement of the filter material is intricate, staggered, the average diameter of the filter material is small, the particle size is larger than the filter material aperture can not be intercepted through the filter material gap. Gravity effect: large particle dust gravity is larger, may not filter material and direct settlement, or is attached to the filter material particles due to agglomeration, gravity increases, after vibration from the filter material. Inertia effect: powder particles with air flow movement, air flow encountered obstacles around, dust due to inertia deviation from the direction of the air flow and hit the filter material layer is collected, the larger the particle, the stronger the inertia force, the more likely to be filtered down. Diffusion effect and electrostatic effect: fine dust hit the filter material layer, the gravity between the dust and the filter material surface makes it stick to the filter material and be filtered down. Small particle size particles to do Brownian motion, collision with each other, small particle size particles collide with each other or with the filter material friction charge, particles are attracted and captured. Large particles are mainly used by the former filter mechanisms, while smaller particles are mainly used by the latter. A variety of filtration mechanisms work at the same time, so that most dust will be filtered down, and the dust removal efficiency of the dust collector will be higher.

How to choose the dust removal cylinder filter material, dust removal cylinder is the most critical filter material, domestic 240 grams polyester long fiber filter material is one of the most widely used filter material in the dust removal industry, Jiangxi national bridge and Silep is currently the best quality of domestic product production factory, other manufacturers of filter material must be carefully used, of course, can not use 220 grams or 200 grams as a substitute, This will shorten the service life of the filter cylinder. It is best to choose cotton material with thick thickness to fix the binding between paper folding and paper folding. The bonding adhesive for fixing the binding should not be bonded with ordinary hot melt adhesive, otherwise your filter cylinder will be blown up like a balloon.

In addition you also want to understand the properties of dust: ordinary dust, ultrafine dust, wet dust or flammable and explosive dust, we will according to the needs of the dust properties of the filter material to do different post-treatment, such as: metal aluminum coating antistatic filter material, chemical layer oil waterproof filter material, PTFE coated filter material, flame retardant filter material and so on, this is a very important choice, Otherwise, it may cause you trouble or even a major accident. Of course, there is better Japan Toray 260g, Korea Kelon 270g for you to choose, after all, something across the sea is better than the domestic production process of filter media. If the filter material is set well, it is necessary to decide the number of folds or the effective filter area of your filter cylinder, which will determine whether the air volume of the filter cylinder and the air volume of the whole dust collector are matched, or the dust removal effect of the dust collector is not good or the life of the filter cylinder is short. The second is the end cover and support net, the end cover should be 0.7mm - 0.8mm thick high-quality plate production to increase the overall strength of the filter cylinder.

The support net is not careless, should also choose 0.8 mm thick diamond shaped support net to ensure that the filter cylinder will not be sucked when blowing back. Then is the adhesive, the adhesive of the dust filter cylinder must choose high quality special adhesive glue, and the amount of glue must be sufficient, it is different from the air filter element of the car on the strength of the relatively not too high, dust filter cylinder in the work will have 6 kilograms of pulse cleaning pressure constantly through the filter cylinder, so the adhesive is not good or the amount of glue too little filter cylinder end cap easy to fall off. Finally, the sealing rubber strip and packaging, sealing rubber strip is also very critical, a bad sealing rubber strip will cause the seal between the filter cylinder and the flower plate is not strict, resulting in dust not through the filter cylinder and directly out. Dust removal filter cylinder is generally large, the packing box is not firm, it will cause damage to the filter cylinder in transit.