Pulse bag dust collector because the filter material is folded into a cylinder, the filter material layout density is large, so the dust removal mechanism is compact, small volume; Filter cylinder height is small, easy to install, use and maintenance workload is small; The filter area of the same volume dust collector is relatively large, the filter wind speed is small, and the sniper is not big. Filter material folding requires strict sealing at both ends and no air leakage, otherwise it will affect the dust removal effect. The cylinder type dust collector is composed of air inlet pipe, air exhaust pipe, box, ash hopper, dust cleaning device, filter drum and electronic control device. The arrangement of the filter cylinder in the dust collector is very important, the filter cylinder can be arranged vertically on the box flower plate of the dust collector, can also be arranged tilted on the flower plate, fixed with bolts, and the rubber pad, the lower part of the flower plate is divided into the filter chamber, the upper part is divided into the clean gas chamber, the filter cylinder is fixed with bolts, the convenient method is automatic locking device and rubber pressing device, these two methods, It is convenient for installation and maintenance. The tilt Angle of the dust hopper should be fixed according to the rerest Angle of the dust, which should not be less than 60 degrees.
Analysis of the relationship between filter material and dust quality of pulse bag dust collector:
First, when the water content is large and the dust concentration is large, it is appropriate to choose not afraid of water, filter material (or anti-condensation filter material) or coated filter material (base cloth should be not afraid of water treatment of needle felt).
2. Ryton (polyphenylene sulfide) needle felt is often used when the dust gas contains acid and alkaline and the gas temperature is less than or equal to 190°C. When the gas temperature is less than 240°C and the sex requirement is not too high, P84 (polyimide) needled felt is selected.
3. When the dust-containing gas is flammable and explosive, the electrostatic tapetum needled felt should be used. When the dust-containing gas is both flammable and explosive, the electrostatic tapetum needled felt should be not afraid of water (three prevention).
4. Filtration speed is the key factor for the selection of dust collector, which should be determined according to the properties of dust or dust, application occasions, dust size, viscosity, gas temperature, water content, dust concentration and different filter materials.
Five, when the dust particle size is fine, the temperature and humidity are good, the concentration is large, and the viscosity should be low. Such as ≤1m/min; On the contrary, the optional high value should not exceed 1.5m/min. For dust particle size is very large.
Six, normal temperature, dry, non-viscous, and low concentration, 1.5~2m/min can be selected. When selecting filtration speed, it should be calculated that the net filtration wind speed should not exceed the above value when reducing the filtration area of one room (when cleaning ash).
Seven, the filter material should be considered according to the temperature of the dust containing gas, water content, acid, alkali properties, dust viscosity, concentration and grinding properties.
8. Polyester needled felt of 500~550g/m2 is commonly used at room temperature or ≤130°C when the water content is small and there is no acidity. <250°C, use arylon Nomex needled felt or 800g/m2 glass fiber needled felt or 800g/m2 double glass fiber fabric or Flumis [FMS] high temperature filter material (fluorine gas can not use glass fiber material).
The properties of internal suction arm dust included specific resistance, particle size, true density, scoop property, hydrophobicity and hydrohardness, flammability, explosion, etc. Dust with too large or too small specific resistance is not suitable for electrostatic precipitator, bag type dust collector is not affected by the specific resistance of dust; The concentration and particle size of dust have obvious influence on the rate of electrostatic precipitator, but not on the bag precipitator. When the dust concentration of the gas is good, the pre-dust removal device should be set up before the electrostatic precipitator. The type of bag dust collector, the way of cleaning dust and the filtering wind speed depend on the nature of dust (particle size, scoop); Wet dust collector is not suitable for purifying hydrophobic and hydraulic dust: the true density of dust has obvious influence on gravity dust collector, inertia dust collector and cyclone dust collector. For the new adhesion of large dust, easy to lead to dust collector working face cat knot or blockage, therefore, it is not suitable to use dry dust removal; When the dust can produce combustible or explosive dangerous mixture after water purification, wet dust collector can not be used.
internal suction arm https://www.kaisenfilter.com/Suspended-Suction-Arm
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