Maintenance of dust bag: 1. When entering the treatment and repairing the toxic gas dust collector, it is necessary to prevent possible oxygen deficiency and gas poisoning accidents. The gas in the system can be replaced with air. 2. After each maintenance is completed, carefully check if any tools or other debris have fallen into the equipment. Check whether the installation of each protective cover is appropriate and do not rush into it. 3. When the dust collection system equipment is turned on or off, it is necessary to contact other positions and obtain their approval before starting or stopping according to the operating procedures. 4. When maintaining a single machine bag filter, the power should be disconnected first. The operator must carry the key to the control panel and hang the words "under maintenance, strictly prohibited from operation". 5. When dealing with faults in daily life, operators must strictly prevent clothing from getting tangled into the transmission device. Be sure to wear proper labor tools when entering the ash hopper for cleaning or hanging bags in the filter bag room to prevent dust from causing eye irritation or skin burns. 6. Protective covers should be added to devices such as vibrators, star shaped unloaders, exhaust fans, shafts, transmission belts, and transmission coupling wheels to prevent bolts from loosening, belts, and chains from breaking, and causing casualties. 7. For bag type dust collectors that handle gases containing flammable and explosive dust, such as those used in coal mills, dust should often accumulate in the collector to prevent combustion or explosion, and sparks should be prevented from entering. It is strictly prohibited to use electric welding or gas welding to repair pipelines or shells during operation. 8. For positive pressure fiberglass bag filters used to handle high-temperature gases, measures should be taken to prevent heatstroke when hanging filter bags in the gas distribution room during summer. It mainly depends on the filter material. The dust containing gas enters the filter bag filtration area of the box, and the effectiveness of the dust removal bag is related to various factors. The vast majority of dust is trapped on the outer surface of the filter bag, while clean gas enters the inside of the filter bag through the filter material. The purified gas enters the upper box through the filter bag mouth and is then discharged through the air outlet. The cage inside the filter bag is used to support the filter bag, prevent it from collapsing, and at the same time, it helps to redistribute the dust cake. The filter material of the dust collector bag is a fabric or felt woven from synthetic fibers, fibers, or glass fibers. Sew the cloth or felt into cylindrical or flat filter bags as needed. Select filter media suitable for the application conditions based on the properties of the flue gas. Precautions for transporting dust removal bags: The dust removal bag is the heart of the bag filter during operation. The cylindrical pulse type dust collector bag is usually vertically suspended in the dust collector. The dust containing gas enters the dust collector through the air inlet and passes through the guide plate of the ash hopper, separating some large particles of dust in the gas under the action of inertia force and directly falling into the ash hopper. The dust collector bag is a type of dust removal filter material with good ventilation, dust removal, and some acid, alkali, and heat resistance abilities. During the weaving process, a multi sided fleece is used to increase the fabric thickness, which is elastic and has a very good dust removal effect. The dust removal rate can reach. How does a dust bag filter dust? The dust bag is the heart of the bag filter during operation, usually a cylindrical pulse type dust bag suspended vertically in the dust collector. The dusty gas enters the dust collector through the air inlet and enters the interior of the filter bag after being introduced into the body through the inlet. The dust is trapped on the inner surface of the filter bag, and the purified gas is distributed through the filter. Exhaust the body through the gas outlet. The dust collection and cleaning process relies on the up and down reciprocating operation of a back blowing device (air ring box) tightly fitted on the outside of the dust removal filter bag. There is a circular narrow gap on the inside of the air ring box, which is closely attached to the filter cloth. The airflow sent by the high-pressure blower is sprayed from the narrow gap to blow off the dust adhered to the inside of the filter bag. Only a small section of each filter bag is cleaned, and the rest is cleaned as usual. Therefore, the dust collector works continuously, and the dust bag plays a decisive role in the dust removal equipment. Cleaning of dust removal bags: 1. Dust cleaning: High frequency vibration is used to minimize the large dust particles that enter the bag wall, without affecting the entanglement fastness of fibers, and to maintain good peel resistance of the bag. 2. Chemical experiment processing: Extract bag samples, use instrument analysis to detect the composition of oil stains in the bag, select appropriate washing materials, and thoroughly clean the bag without causing any damage. 3. Cleaning: Select suitable washing materials and strictly mix them, clean with low-temperature water, ensure even water flow, moderate strength, and no mechanical damage to the cloth bag. 4. Drying: Using hot air at around 110 ℃ to dry, maintain the dimensional stability of the bag, and prevent deformation and shrinkage of the bag after drying. 5. High reuse rate for damaged cloth bags caused by abrasion, holes, etc. due to use.
