A fly ash screening device with drying function

Abstract

The invention discloses a coal ash sieving device with a drying function. The coal ash sieving device comprises a base. A sieving box is fixedly arranged at the top of the base through a support. Thebottom of the sieving box is in a square funnel shape. A discharge pipe is fixedly connected to a bottom discharge outlet of the sieving box. A support plate is fixedly arranged in the sieving box. The left side and the right side of the support plate are each provided with a rectangular opening. A vertical plate is fixedly connected to the bottom center of the support plate. The left side and theright side of the vertical plate are each provided with a drawer. The drawers are arranged downwards obliquely from inside to outside. The front and rear side walls in the sieving box and the left and right side walls of the vertical plate are each provided with a sliding groove matched with the corresponding drawer. The left and right side walls of the sieving box are provided with openings through which the drawers can penetrate. Openings are formed in the bottoms of the drawers and are fixedly connected with sieves. According to the coal ash sieving device, coal ash is sieved with the sieves, enough fine particles of the coal ahs are ensured, utilization in the later period is convenient, large-particle coal ash outwards slides out of the sieving box, energy conservation and emission reduction are achieved, and resources are recycled effectively.

Description

technical field [0001] The invention relates to the technical field of fly ash recovery, in particular to a fly ash screening device with a drying function. Background technique [0002] Fly ash is the fine ash collected from the flue gas after coal combustion. Fly ash is the main solid waste discharged from coal-fired power plants. The main oxides of fly ash in thermal power plants in my country are: SiO2, Al2O3, Fe2O3, TiO2, etc. With the development of the power industry, the discharge of fly ash from coal-fired power plants has increased year by year, becoming one of the largest industrial wastes in my country. If a large amount of fly ash is not treated, it will generate dust , pollute the atmosphere; if it is discharged into the water system, it will cause river silting, and the toxic chemicals in it will also cause harm to humans and organisms. [0003] Fly ash can be utilized as a resource, such as as an admixture for concrete, etc. The particle size of the fly ash ha...

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Problems solved by technology

[0003] Fly ash can be utilized as a resource, such as as an admixture for concrete, etc. The particle size of the fly ash harvested from the flue gas is different, and generally needs to be screened. Only the fly ash with a small enough particle size can be directly used. The existing The sieving device used for fly ash feeding is sieved through the sieve, and the sieving efficiency is low, and the sieved fly ash is not conducive to collection; and the screen of the ordinary sieving device is inconvenient to clean, and it will be blocked after a period of use. leading to poor screening effect

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