Dust removal device for removing dust and adherends on surface of steel belt and operation method

Abstract

The invention discloses a dust removal device for removing dust and adherends on the surface of a steel belt and an operation method, and belongs to the technical field of mechanical devices. The device comprises an upper brush roller, a lower brush roller, an upper sealing roller, a lower sealing roller, an upper box body collecting cover and a lower box body collecting cover which are located above and below the steel belt and are arranged in parallel; a driving mechanism for controlling the upper box body collecting cover to move far away from or close to the lower box body collecting coveris arranged on the lower box body collecting cover; when the upper box body collecting cover moves close to the lower box body collecting cover and is closed, a cavity is formed; the upper brush roller and the lower brush roller each comprise a roller shaft and brush wires located on the surface of the roller shaft; each roller shaft is a hollow shaft with one end provided with an air inlet connected with an external air source and the other end closed; and spraying holes are formed in the surfaces of the hollow shafts. With the dust removal device adopted, the removal rate of magnesium oxideon the surface of the steel plate can reach 95% or above by means of mechanical stripping and high-pressure airflow purging.

Description

technical field [0001] The invention relates to the removal of magnesium oxide dust and adherents on the surface of an oriented silicon steel sheet, and belongs to the technical field of dust removal, in particular to a dust removal device and an operation method for removing dust and adherents on the surface of a steel strip. Background technique [0002] Before the high-temperature annealing of the oriented silicon steel sheet, in order to prevent adhesion and form a good magnesium silicate bottom layer, the upper and lower surfaces of the strip are coated with a special magnesium oxide powder coating with a certain degree of hydration, and then rolled into coils after drying. The moisture in the steel coil is released during the high-temperature annealing process, and the oxygen-containing and hydroxide-containing compounds in the coating are reduced and shrunk into fine powder particles. Therefore, a lot of magnesia dust is produced during the uncoiling process of the he...

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Problems solved by technology

[0005] 1.1 In order to avoid scratching between the steel strip and the dedusting air knife, there is still a certain distance between the air knife and the nozzle and the surface of the steel strip, and the high-pressure, high-speed air knife and the strip surface are sprayed at a certain angle, resulting in a decrease in the purging effect;

[0006] 1.2 The magnesium oxide dust scattered on the surface of the steel plate can be blown off to a certain extent by blowing the surface of the steel plate with high-pressure air, but the magnesium oxide dust adhered to the surface of the steel plate cannot be effectively removed;

[0007] 1.3 The surface of the steel plate with large edge waves cannot be effectively removed, which also causes the secondary flying of fine magnesium oxide dust;

[0008] 1.4 The distance between the two sets of high-pressure and high-speed air knives is relatively long, which is convenient for wearing the belt. There are wear-resistant backing plates on the upper and lower sides of the airtight cover to ensure the smooth passage of the silicon steel belt. However, magnesium oxide is easy to harden and accumulate, and the belt hangs Surfaces are prone to scratches nowadays

[0009] 1.5 The casing is an integral structure, the angle of the air knife is manually adjusted at the observation port, and must be adjusted in the shutdown state

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