Filter drum deduster

Abstract

The invention is an improvement of a filter drum deduster. The deduster is characterized in that a rigid non-compression eccentric rotating interference compressing piece is used for compressing between an air-out end surface of the filter drum and an overhung pore plate; a cushion space which is not less than 30cm is reserved between the bottom of the filtering drum and the bottom plane of a filtering drum box body; and a filtering air inlet is arranged in the cushion space at the lower part of the filtering drum. According to the deduster provided by the invention, over-diameter particles are ensured not to exist in the filtered gas, the filtering material is prevented from being damaged effectively, the service life of the filtering drum is prolonged, two main defects which are hard to solve by a traditional filtering drum deduster are solved completely, and the effective service life of the filtering drum is prolonged from originally maximum twelve months to eighteen months. A frame type filter is added above a filtering drum air outlet by being connected with a transition section interval, the filter precision of the frame type filter is higher than the filter grade of the lower filtering drum, thereby forming secondary filtration of upper and lower inter-phase serial connection; the minimum filtering precision can be 0.1 microns; the filter drum deduster provided by the invention can be used in the lead-acid battery industry for filtering lead dust and fume, and the dust content of the filtered gas is not more than 0.07mg / m<3>, which is far less than the national emission standard; the filtration resistance is increased by more or less than 10% on the basis of previous grade, so that the contradiction between the filtering precision and the filtering resistance is balanced well.

Description

technical field [0001] The invention is an improvement to the filter cartridge dust collector, in particular to a filter cartridge dust collector with no air leakage between the filter cartridge and the installation orifice plate, the filtering precision can reach the precision of the filter material, and the filter cartridge has a long service life. Background technique [0002] One way is to use an external filter cartridge dust collector to filter the filter material of the filter cartridge, so that the dust particles are trapped on the surface of the filter cartridge filter material, and the clean air passes through the filter cartridge filter material. So as to achieve the purification effect. In the actual design, in order to meet the maintainability and replaceability of the filter cartridge, the filter cartridge is usually designed as a movable assembly, that is, the filter cartridge and the orifice plate (vertical type) of the fixed suspension filter cartridge are m...

AI Technical Summary

Problems solved by technology

However, the single pursuit of high-precision filter materials will cause a linear increase in filter resistance (usually the resistance is increased by 30-40% compared with the original level), which will lead to a significant increase in operating energy consumption.

In particular, the commonly used wood pulp fiber filter paper is used for the treatment of dusty gas generated from lead powder in the storage battery industry. Because the lead powder is soaked in dilute sulfuric acid and added with other additives in the production process, and maintains a certain moisture content, the ground The fine powder has a certain degree of cohesiveness, and it is easy to adhere to the surface of the filter material during filtration treatment, and it is difficult to remove after bonding, which affects the filtration capacity; wood pulp fiber filter paper is a layer filter, and high-speed filtration airflow impacts the filter material, which is inevitable. Particles with a particle size roughly equal to or slightly smaller than the pore size will drill in, and it will be difficult to flush out through back-flushing, and some filter holes will be blocked for a long time, which will also affect the effective service life of the filter material

[0006] The above objective phenomenon seems simple, but it has not been effectively solved for a long time in the filter cartridge dust removal, which is enough to show the technical difficulty that people solve

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