An ultra-long filter bag dust collector

Abstract

An ultra-long filter bag dust collector, including a pulse gas generating device and an ultra-long filter bag dust removal device; the pulse gas generating device includes a large flow instant opening valve, a large flow delay instant closing valve, a large flow instant opening valve, The large-flow delay instant closing valve is designed with a new metal structure, and has the characteristics of high working pressure and small pressure drop. The long filter bag dedusting device is equipped with several series-connected air guiding devices, which can effectively transport pulsed compressed air to the bottom of the ultra-long filter bag dedusting device, and its maximum air transmission length can reach more than 18 meters. The characteristics of high and uniform gas transmission can make the super-long filter bag shake instantaneously and strongly, so it has an excellent dust removal effect; During the renovation, technical difficulties arise due to the limitation of the renovation area.

Description

technical field [0001] The invention relates to the technical field of industrial dust removal, in particular to an ultra-long filter bag dust collector. Background technique [0002] After decades of development, the bag filter has become increasingly mature in its structure and dust removal process, and has been widely used in various fields of industrial production; however, there are still some shortcomings in the actual promotion and application of the bag filter: such as the existing bag filter The pulse valve for the filter adopts a diaphragm structure, so it has the problem of short service life. At the same time, its working pressure can only be 0.6MPa. In order to ensure the pulse dust removal effect of the bag filter, it is necessary to output a large amount of compressed air for each pulse. Therefore, it is necessary to set an air bag with a larger capacity. [0003] In recent years, with the gradual strengthening of domestic environmental protection, it is requ...

AI Technical Summary

Problems solved by technology

[0002] After decades of development, the bag filter has become increasingly mature in its structure and dust removal process, and has been widely used in various fields of industrial production; however, there are still some shortcomings in the actual promotion and application of the bag filter: such as the existing bag filter The pulse valve for the filter adopts a diaphragm structure, so it has the problem of short service life. At the same time, its working pressure can only be 0.6MPa. In order to ensure the pulse dust removal effect of the bag filter, it is necessary to output a large amount of compressed air for each pulse. Therefore, it is necessary to set up an air bag with a larger capacity

[0003] In recent years, with the gradual strengthening of domestic environmental protection, it is required that industrial and mining enterprises that have not installed bag dust collectors must also install bag dust collectors to improve the emission quality of production tail gas; but in the process, they encountered a very serious problem Technical problem: that is, the original industrial and mining enterprises did not reserve the area for installing bag filter in the horizontal layout of production equipment, so the area that can be used for installing bag filter is extremely limited, and bag filter is installed in the limited area The device means that only the number of dust bags can be reduced and the volume of the air bag can be reduced, which in turn becomes an irreconcilable contradiction with the required air volume and larger air bag volume of the bag filter; in order to solve this problem, the ultra-long Filter bags to ensure the required air volume of the bag filter, and increase the pressure of the air bag to reduce the volume of the air bag has become a necessary technical solution

[0004] However, the use of ultra-long filter bags encounters another technical problem. The existing blowing pipe structure for pulse dust removal can only accommodate a filter bag length of 8-9 meters. , because the compressed air has already expanded and worked on the upper part of the filter bag, the compressed air cannot reach the lower part of the filter bag, resulting in the lower part of the filter bag being unable to produce effective vibration during the pulse dust removal process and unable to remove the dust accumulated in the lower part of the filter bag; to solve this problem , the invention patent with the patent number CN101172208B discloses a compressed air injection device using an air booster, which essentially converts compressed air into a high-speed jet flow to achieve the purpose of increasing the air delivery distance; but the actual use of this invention patent Application effect, the longest length of the filter bag can only be extended to about 12 meters. At the same time, due to the low energy density of the high-speed jet airflow, the overall vibration intensity of the filter bag is low and the dust removal effect of the filter bag is poor; Pressure to reduce the volume of the gas bag, but it cannot be implemented due to the limitation of the maximum working pressure of the existing diaphragm pulse valve of 0.6MPa; Emission transformation has become an insurmountable technical problem in the field of industrial dust removal technology

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