Bag filter is a filter type dust removal equipment based on filtration principle. It uses organic fiber or inorganic fiber filter cloth to filter out the dust in the gas. Large pulse long bag dust collector is a new type of high-efficiency long bag dust collector developed based on advanced technology at home and abroad. It is a new and efficient bag dust collector developed on the basis of conventional short bag pulse dust collector. It not only combines the characteristics of chamber back blowing and pulse dust cleaning, overcomes the shortcomings of insufficient back blowing intensity of ordinary chamber and dust re attachment of general pulse dust cleaning, but also lengthens the filter bag and gives full play to the strong dust cleaning effect of compressed air. It is a large dust removal equipment with high dust removal efficiency, small floor area, stable operation, reliable performance and convenient maintenance.
With the rapid increase of population in recent years, the air quality has also decreased. At this time, the air purifier plays a vital role. A new bag type dust removal system of long company plays a vital role in air purification. LENGE company introduced the German automatic ultrasonic low efficiency filter production line, which improved the welding strength of the filter bag and the filtering performance of the filter bag.Dust removal process: the dusty gas enters the middle box from the air inlet, enters the cloth bag from outside the filter bag, the dust is blocked on the surface outside the filter bag, the purified air enters the bag, then enters the upper box from the upper part of the cloth bag, and finally is discharged by the exhaust pipe.
The working mechanism of bag filter:
The dust containing flue gas passes through the filter material and the dust particles are filtered. The coarse-grained dust is mainly captured by inertial collision, and the fine-grained dust is mainly captured by diffusion and screening. The dust layer of the filter material also has a certain filtering effect. The dust removal effect of bag filter is related to many factors, but mainly depends on the filter material. The filter material of the bag filter is a cloth or felt woven from synthetic fiber, natural fiber or glass fiber. The cloth or felt is sewed into a cylindrical or flat filter bag as needed. According to the properties of flue gas, the filter material suitable for application conditions is selected. Bag structure to increase the filter area. German ultrasonic filter bag production line, a variety of welding procedures to meet the welding.requirements of different filter materials.Filter bag linear welding, high strength, prevent leakage risk. High consistency of filter bag parameters toimprove product stability.
The high dust removal efficiency of bag filter is inseparable from its dust removal mechanism. When the dusty gas enters the ash hopper through the air inlet pipe at the lower part of the dust remover and the deflector, due to the collision of the deflector and the reduction of gas velocity, the coarse-grained dust will fall into the ash hopper, and the other fine-grained dust will enter the filter bag chamber with the gas. Due to the inertia, diffusion, barrier, hook, static electricity and other effects of the filter fiber and fabric, the dust will be blocked in the filter bag, and the purified gas will escape out of the bag, It is discharged through the exhaust pipe.
The accumulated dust on the filter bag is removed by gas back washing method. The removed dust is discharged to the ash hopper and discharged to the ash conveying device through the double-layer ash unloading valve. The accumulated dust on the filter bag can also be removed by injecting pulse air flow, so as to achieve the purpose of ash removal. The removed dust is discharged by the ash discharge device. The high dust removal efficiency of bag filter is also inseparable from the filter material. The performance and quality of filter material are directly related to the performance and service life of bag filter. Filter material is the main material for making filter bag. Its performance and quality promote the progress of bag dust removal technology and affect its application scope and service life.
The filter dust removal device includes bag dust collector and particle layer dust collector. The former usually uses the filter bag made of organic fiber or inorganic fiber fabric as the filter layer, while the latter filter layer is mostly composed of particles with different particle sizes, such as quartz sand, river sand, ceramsite, slag, etc. With the repeated adhesion of the powder to the outer surface of the filter bag, the powder layer continues to thicken, and the resistance value of the bag filter also increases; The pulse valve diaphragm sends a command. When the left and right are submerged, the pulse valve is opened and the compressed air in the high-pressure air bag is connected. If there is no dust or it is small to a certain extent, the mechanical ash cleaning will stop working.
LENGE company’s bag filter is a dry dust filtering device. It is suitable for capturing fine, dry and non fibrous dust. The filter bag is made of textile filter cloth or non-woven felt. The filtering effect of fiber fabric is used to filter the dusty gas. When the dusty gas enters the bag filter, the dust with large particles and large specific gravity will settle down due to the effect of gravity and fall into the ash hopper. When the gas containing fine dust passes through the filter material, the dust will be retained to purify the gas.
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