Inertial dust precollecting air flow uniform distribution device

Abstract

An inertial dust precollecting air flow uniform distribution device belongs to the technical field of bag-type dust collectors and aims to provide an inertial dust precollecting air flow uniform distribution device capable of lowering the resistance of the bag-type dust collectors and prolonging the service life of filtering bags. The inertial dust precollecting air flow uniform distribution device is technically characterized in that a horizontal louver-shaped guide plate (2) and a vertical louver-shaped guide plate (3) are arranged between a fresh flue (4) in a flue and a dust hopper (8). The horizontal louver-shaped guide plate and the vertical louver-shaped guide plate are arranged between the fresh flue in the flue and the dust hopper, therefore, the invention has very good air uniform distribution effect and dust settlement effect; the subpressure of each bag chamber, which is operated and measured actually, is basically equal to the filter pressure difference, the dust settlement quantity reaches 40-60 percent, therefore, the inertial dust precollecting air flow uniform distribution device has more remarkable effect to dust with the density larger than 2500kg / m<3> and the grain diameter larger than 40 microns. The invention greatly improves the working efficiency of the dust collector, lowers the dust absorption quantity and the filtration resistance of the filtering bags and the dust-clearing intensity, reduces the dust-clearing times, and can be widely used for treating the dust pollution in industries such as building materials, metallurgy, chemical industry, and the like.

Description

technical field [0001] The invention relates to an inertial pre-collecting dust airflow uniform distribution device, which belongs to the technical field of bag dust collectors. Background technique [0002] At present, the most widely used bag filter mainly includes air box pulse bag filter, tubular pulse bag filter, etc.; The clean air is separated by an inclined air duct partition; the dusty gas directly enters the ash hopper through the air inlet duct, and then is filtered through the filter bag. There are technical flaws in this air duct, especially when dealing with 200,000 m 3 The defect is more obvious for the large bag filter with high concentration of dust-containing gas above / h. Its main problems are: [0003] 1. The uneven distribution of air volume among the bag chambers causes the filter load of each bag chamber to vary from light to heavy, which makes the filter resistance of the bag chamber with heavier filter load higher and shortens the service life of ...

AI Technical Summary

Problems solved by technology

[0003] 1. The uneven distribution of air volume among the bag chambers causes the filter load of each bag chamber to vary from light to heavy, which makes the filter resistance of the bag chamber with heavier filter load higher and shortens the service life of the filter bag

[0004] 2. The air volume distribution inside each bag room is uneven, resulting in light and heavy filter loads of filter bags in each bag room, making the filter bags with heavier filter loads have higher filter resistance and shortening the service life of filter bags

[0005] 3. The inertial settlement of dust in the dusty gas in the air duct is small, a large amount of dust is adsorbed on the filter bag, the filter bag has high filtration resistance, and the cleaning cycle is accelerated, resulting in shortened life of the filter bag

[0006] 4. Due to the large amount of dust adsorbed on the filter bag, the filter bag has a high filtration resistance, which requires a high pressure of compressed air for dust removal, resulting in a shortened life of the filter bag

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