Circular type air injection nozzles having two circular slits and filter cleaning system using them
A cleaning system and air nozzle technology, applied in the direction of dispersed particle filtration, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of complex composition of nozzles, high installation cost, high installation cost, etc., and achieve easy maintenance or repair, centralized Improved dust efficiency and reduced energy costs
Active Publication Date: 2013-05-08
KOREA INST OF ENERGY RES
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Problems solved by technology
[0004] However, the nozzles used in the aforementioned existing dust collection filter cleaning systems have complicated constitutions or need to be controlled separately
For these reasons, existing cleaning systems for dust collection filters are difficult to maintain or repair or they cause high installation costs
[0005] For example, in a filter cleaning system for a filter dust collector (Korean Patent Application No. 20-2005-16238) (one of the aforementioned existing systems), its installation cost is particularly high since each nozzle includes an actuator and a package
Also, since the actuators need to be repaired individually, the system is difficult to maintain or repair
Method used
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Embodiment Construction
[0045] Before describing the present invention in detail, the filter dust collection technology, pulse jet cleaning method and Coanda effect related to the present invention will be explained below:
[0046] Filtration dust collection technology is to remove dust contained in the process gas by using a dust collection filter. As dust particles collect on the filter, the differential pressure across the filter increases. Thus, a process of periodically separating dust collected on the filter surface is required and this is hereinafter referred to as filter cleaning. Filter cleaning methods commonly used in filter dust collection technology include pulse jet cleaning methods that separate dust from the filter surface by injecting compressed air at once, The counter-flow cleaning method that cleans the filter, and the shaking cleaning method that cleans the filter by directly vibrating the dust collection filter.
[0047] Regarding the pulse jet cleaning method, the pulse jet c...
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Abstract
There are provided circular type air injection nozzles having two circular slits by generating the Coanda effect, and a filter cleaning system using them and more particularly, circular type air injection nozzles having two circular slits by using the Coanda effect, the air injection nozzle in which two circumferential type air injection slits are formed around inner and outer peripheries of the air injection nozzle and the Coanda effect is generated when injecting compressed air through the slits at high speed so that the injected air flows along a surface of a guide inside the air injection nozzle and then nearby air being several tens of times an amount of the injected air drawn from the inside and outside of the air injection nozzle is guided to the inside of the filter, and a filter cleaning system using them. The present invention as described has the feature of remarkably improving the performance of the cleaning system.
Description
technical field [0001] The present invention relates to an annular air nozzle having two annular slits producing the Coanda effect, and a filter cleaning system using the same, and more particularly, to an annular air nozzle having two annular slits utilizing the Coanda effect, Wherein two circumferential air jet slits are formed around the inner and outer peripheries of the air nozzle and a Coanda effect is produced when compressed air is jetted through the slits at high speed so that the jetted air follows the surface of the guide inside the air nozzle Flowing and then nearby air whose amount is tens of times the amount of sprayed air coming out from the inside and outside of the air nozzle is guided to the inside of the filter, and also relates to a filter cleaning system using the nozzle. Background technique [0002] Generally, when dust particles generated during various industrial processes are collected on the dust filter of the filter dust collector for removal, the...
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IPC IPC(8): B01D46/00
CPCB01D46/0068B01D46/42B01D46/71
Inventor 朴贤设林京洙
Owner KOREA INST OF ENERGY RES