Composite double-layer filter cartridge with built-in parabolic airflow guide cone and method

Abstract

The invention discloses a composite double-layer filter cartridge with a built-in parabolic airflow guide cone and a method. Comprising an outer filter element and an inner filter element, the inner filter element is coaxially sleeved with the outer filter element; a space between the outer filter element and the inner filter element forms a filter cartridge cavity; the axial length of the inner filter element is smaller than that of the outer filter element; one axial end of the outer filter element is an air outlet, and the other axial end of the outer filter element is an air inlet; one end of the inner filter element is arranged at the air inlet end of the outer filter element, and an airflow guide cone is mounted at the other end of the inner filter element; the top end of the airflow guide cone is arranged towards the air outlet; according to the composite double-layer filter cartridge provided by the invention, the flow field of blowback dust removal airflow is changed through the airflow guide cone, so that the blowback pressure acting on the inner wall of the filter element is more uniform in the axial direction, and meanwhile, the filter area of the filter cartridge is increased due to the existence of the inner filter element, so that the dust removal effect is improved, the dust removal efficiency is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of industrial dust removal, in particular to a composite double-layer filter cartridge with a built-in parabolic airflow guide cone and a method. Background technique [0002] In recent years, the heavy chemical industry (chemical industry, electric power and steel, etc.), which is mainly resource- and energy-consuming, has developed rapidly, and the accompanying atmospheric environmental problems have attracted more and more attention from all walks of life. Among them, particulate matter, especially fine particulate matter in the environment, has become an important factor endangering people's health and life. In order to control the air pollution dust emissions from the source, the manufacturing industry has increasingly higher requirements on the performance and efficiency of dust removal equipment. [0003] As early as the 1970s, the filter cartridge dust collector based on the bag filter has appeared in Japan a...

AI Technical Summary

Problems solved by technology

[0005] However, the existing pulse back-blowing ash removal technology still has the phenomenon of uneven ash removal, which is manifested by insufficient ash removal strength on the upper part of the filter cartridge, resulting in incomplete ash removal

However, the dust cleaning intensity in the bottom area is too high, causing a huge impact on the bottom area of ​​the filter cartridge, shortening the overall service life of the filter cartridge

Images