Modular self-dredging cloth bag fine filtering device

Abstract

The invention discloses a modular self-dredging cloth bag fine filtering device, and belongs to the technical field of gas filtration. The filter bag can be divided into a plurality of independent filter units in a modular manner; on one hand, dust carried in air is bounced off through the elastic spherical air bag under the action of airflow on the outer side of the filter bag, and the filteringpressure of the filter bag is reduced; on the other hand, the vibration transmission effect of the elastic spherical air bag and the self-effect of airflow are utilized to cause air resonance on the surface of the filter bag and apply certain physical contact, accumulation and blockage of dust on the surface of the filter bag are reduced, and the filtration efficiency is guaranteed. The multi-section corrugated sleeve is arranged on the inner side of the filter bag, the difference between the internal pressure and the external pressure on the two sides of the filter bag serves as a starting condition, open filtering after unfolding and closed back flushing after reshaping are achieved to realize self-dredging, back flushing ash removal is conducted through external power without human intervention or halting, filtering and dredging work is automatically conducted in the whole process, and the dust removal and filtering efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of gas filtration, and more specifically relates to a modular self-draining cloth bag fine filtration device. Background technique [0002] The bag filter is a dry dust filter device. It is suitable for capturing fine, dry, non-fibrous dust. The filter bag is made of textile filter cloth or non-woven felt, and uses the filter function of the fiber fabric to filter the dusty gas. When the dusty gas enters the bag filter, the dust with large particles and large specific gravity will When the air containing fine dust passes through the filter material, the dust will be blocked and the air will be purified. [0003] The bag filter is a dry dust filter device. After the filter material is used for a period of time, a layer of dust accumulates on the surface of the filter bag due to effects such as screening, collision, retention, diffusion, and static electricity. This layer of dust is called the first layer. ...

AI Technical Summary

Problems solved by technology

[0004] The current bag filter generally has two methods for dust removal, one is manual dust removal, which is slow in efficiency, and the other is back blowing dust removal by low-pressure pulse method, which has high efficiency and remarkable effect, but the two cleaning methods The ash method cannot avoid the need to stop the machine, resulting in inconsistency in dust removal and filtration, and a relatively low overall filtration efficiency. Especially for dust removal and filtration with a large workload, several shutdowns may be required to clean the dust during the process to ensure the dust removal efficiency. Moreover, the impact force of the low-pressure pulse may damage the first layer of filter material on the surface of the bag, and the efficiency of manual dust removal is even lower. Therefore, there is an urgent need for a filter device that can continuously remove dust and filter without stopping the machine, and can clean the dust and self-dredging.

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