Manufacturer supplies furniture factory dust removal equipment, customized Quanzhou bag dust removal equipment

Description :

　　development trend

　　Science and technology continue to advance, with new technologies, materials, and processes constantly emerging. The development of electronic technology, numerical control technology, laser technology, microwave technology, and high-voltage electrostatic technology has brought new vitality to the automation, flexibility, intelligence, and integration of coating equipment, continuously increasing the variety of machine tools and improving the technical level. Overall, its development trend has the following aspects:

　　(1) Improve the comprehensive utilization rate of coatings, reduce waste, and make the coating process more environmentally friendly and green.

　　(2) Numerical control automation, easy operation, and doubled efficiency.

　　(3) The streamlined operation mode is constantly being promoted.

　　(4) Apply high-tech.

　　(5) Develop flexible and integrated coating production systems.

　　(6) Safe and pollution-free coating production system.

　　Product Maintenance

　　Regularly check the operation of control valves, pulse valves, and timers.

　　The failure of the pulse valve rubber diaphragm is a common fault in bag filters, which directly affects the dust cleaning effect. This device belongs to the external filter type, with a skeleton inside the bag. It is necessary to check whether the parts that fix the filter bag are loose and whether the tension of the filter bag is appropriate. Is the support frame smooth to prevent wear and tear on the filter bag. Compressed air is used for dust removal. Therefore, it is required to remove oil mist and water droplets, and the oil-water separator must be cleaned regularly to prevent malfunction of the moving mechanism and blockage of the filter bag.

　　Whether the air volume and pressure and temperature at each testing point are consistent with the design.

　　The installation status of the 3 filter bags, whether there are any occurrences of bag dropping, loosening, wear, etc. after use, can be judged by visually observing the emissions of the chimney after operation.

　　4. Prevent condensation

　　During use, it is necessary to prevent the gas from cooling below the dew point in the bag chamber, especially when using a bag filter under negative pressure. Due to the frequent leakage of air into the outer shell, the gas temperature in the bag chamber is lower than the dew point, causing the filter bag to become damp. This results in dust not being loose but sticking to the filter bag, blocking the fabric holes and causing dust removal failure. This leads to excessive pressure drop in the dust collector, making it unable to continue operating, and some bags may become stuck and unable to remove dust.

　　To prevent condensation, it is necessary to maintain the temperature of the gas in the dust collector and its system at 25-35 ℃ above its dew point (such as the dew point temperature of 58 ℃ for kiln mill integrated machines, and the operating temperature should be above 90 ℃), in order to ensure the good use effect of the filter bag.

　　Technical measures for dust explosion. Combustion reactions require combustible materials and oxygen, as well as a certain amount of ignition source energy. For dust explosions, three elements should be present: ignition source; Combustible fine dust; Dust is suspended in the air, forming a dust cloud within the explosive concentration range. Only when these three elements coexist can an explosion occur. Therefore, as long as one of the conditions is eliminated, the occurrence of an explosion can be prevented. The following technical measures are commonly used in bag filters.

　　⑴ Explosion proof structural design measures: In the special design of the body structure, in order to prevent the accumulation of combustible dust in the internal components of the dust collector, all beams, partition plates, etc. should be equipped with dust-proof plates, and the slope of the dust-proof plate should be less than 70 degrees. The slip angle of the ash hopper is greater than 70 degrees. In order to prevent dust accumulation due to the small angle between the two hopper walls, two adjacent side plates should be welded with slip plates to eliminate dust deposition. Considering that condensation and blockage of the ash hopper may occur due to abnormal operation and high dust humidity, when designing the ash hopper, steam pipe insulation or tubular electric heaters should be added to the high-temperature dust collector on the ash hopper wall plate. To prevent material accumulation in the ash hopper, each ash hopper also needs to be equipped with a bin arm vibrator or.

　　⑵ Anti static filter bags are used inside the dust collector. Due to the high concentration of dust rubbing against each other during the flow process, both dust and filter cloth can generate static electricity. The accumulation of static electricity can generate sparks and cause combustion. For the pulse cleaning method, polyester needle punched felt is used for the filter bag. To eliminate the insufficient static electricity caused by polyester needle punched felt, conductive metal wires or carbon fibers are spun into the filter bag fabric. When installing the filter bag, it is connected to the workshop grounding grid through a steel frame and porous plate, and then connected to the workshop grounding grid through the shell. Various anti-static products such as MP922 have been developed for filter bags used in anti blowing dust cleaning. The usage effect is very good.

　　⑶ Setting up safety holes (valves) is important to limit the explosion to the inside of the bag filter and prevent it from expanding to other areas. Setting up safety holes and essential fire suppression equipment is essential. The purpose of setting up safety holes is not to prevent explosions, but to limit the explosion range and reduce the number of explosions. Most dust collectors that handle explosive dust operate under safety hole conditions. Because of this, the design of safety holes should ensure that they can effectively function in the event of an explosion accident; Strengthen the maintenance and management of safety holes in daily life.

　　① Explosion proof board is an emergency pressure relief device driven by pressure difference and not automatically closed. It is mainly used for pipelines or dust removal equipment to prevent damage caused by overpressure or vacuum. Compared with safety valves, bursting discs have the advantages of large discharge area, sensitive action, high accuracy, corrosion resistance, and less likely to block. Explosive discs can be used alone or in combination with safety valves.

　　② There are two main types of explosion-proof valve design: one is explosion-proof plate; Another type is the heavy hammer explosion-proof valve. The former type needs to be replaced with a new board after rupture, and production needs to be interrupted. When encountering high negative pressure, it is prone to damage and difficult to maintain insulation. The latter type is more advanced than the former, relying on heavy hammer pressure in the closed state, resulting in poor tightness. Both of the above methods are not suitable for using high-voltage pulse dust cleaning. To address the issue of tightness, an explosion-proof safety lock can be designed on the heavy hammer explosion-proof valve. Its characteristic is that when closed, the locking of the safety door is mainly achieved through this lock, which can automatically open and release in the event of an explosion, and its release force (safety force) can be adjusted by a spring. In order to balance the force on the safety door, it is generally necessary to set 4-6 locks according to the area of the safety door. To make the explosion-proof door tight and leak proof, a dual structure of explosion-proof plate and safety lock can be designed.

　　⑷ Detection and fire prevention measures: Necessary fire prevention measures can be taken on the dust removal system to prevent accidents.

　　① Firefighting facilities. There are mainly water, CO2, and inert fire extinguishing agents. For cement plants, CO2 is mainly used, while steel plants can use nitrogen.

　　② Temperature detection. In order to alleviate the temperature changes of the dust collector and control the ignition point, several thermometers are usually installed at the inlet of the dust collector and the ash hopper.

　　③ CO detection. For large-scale dust removal equipment, the installation of thermometers is limited due to their large volume, and sometimes combustion phenomena that occur far away from the thermometer measuring point are difficult to reflect from the thermometer. A CO detection device can be installed at the outlet of the dust collector to assist in detection. As long as combustion occurs anywhere inside the dust collector, the CO in the flue gas will increase. At this time, the alarm for the increase in CO concentration will be interlocked with the dust removal system control to stop the operation of the dust collector system in a timely manner.

　　Equipment grounding measures: Explosion proof dust collectors are often arranged outdoors due to operational safety requirements. Even when placed outdoors on tall steel structures, according to equipment grounding requirements, lightning protection for equipment grounding becomes an essential measure, but dust collectors generally do not have lightning rods.

　　Choosing explosion-proof components is essential in dust collector explosion-proof measures. Explosion proof dust collectors should avoid introducing dust into electrical loads during operation, which may induce explosion hazards. During the operation of the dust collector, electrical loads and components may inevitably generate electric sparks when in contact with current transmission, and even during conduction. Discharge sparks can induce explosions of dust source gases exceeding the limit concentration, which is also highly likely. All electrical load components must be selected as explosion-proof components to prevent the occurrence of explosion inducing factors. Ensure the safe operation and handling of equipment. For example, explosion-proof products should be used for the pulse valve and solenoid valve used in the pulse dust collector.

　　⑺ Measures to prevent sparks from entering: In bag filters used to treat waste gases from sawdust boilers, rice husk boilers, aluminum regeneration furnaces, and smelting furnaces, the burnt dust in the furnace may enter the box with the airflow of the wind pipe, causing the dust accumulated on the filter cloth to catch fire and cause accidents.

AfterSalesService :

• bag filter