Rectangular 90-degree dust-deposition-prevention bend and dust-deposition-prevention treatment method for bend

Abstract

The invention discloses a rectangular 90-degree dust-deposition-prevention bend and a dust-deposition-prevention treatment method for the bend. The bend comprises an upper top plate, a lower bottom plate, an outer camber surface and an inner camber surface. The upper top plate, the lower bottom plate, the outer camber surface and the inner camber surface are used as four surfaces to define a quarter-circular arc-shaped pipe. The upper top plate and the lower bottom plate are the same. The lower bottom plate and the outer camber surface are each divided into a high-dust-particle-concentration zone, a medium-dust-particle-concentration zone and a low-dust-particle-concentration zone. Dust-deposition-prevention materials with different roughness heights are adopted by the high-dust-particle-concentration zones and the medium-dust-particle-concentration zones correspondingly. According to the rectangular 90-degree dust-deposition-prevention bend and the dust-deposition-prevention treatment method for the bend, the cleaning materials with the different roughness heights are adopted by the portions with different dust deposition concentrations, and deposition of suspended particulate matter on the bend can be effectively reduced. Meanwhile, the usage amount of abrasion-resistant materials is reduced, and manufacturing cost of the bend is lowered.

Description

technical field [0001] The invention belongs to the field of industrial ventilation, and in particular relates to a rectangular elbow and a treatment method for the elbow, in particular to a 90° rectangular anti-dust elbow and the anti-dust treatment method for the elbow. Background technique [0002] When the outdoor air in the air supply system is processed by the air conditioning unit, since most coarse and fine filters can only filter suspended particles above 3um, the fine particles will directly enter the air duct with the wind, and the actual roughness of the inner surface of the air duct is much higher. Due to the size of the fine particles, these fine particles will accumulate more and more electrostatic adsorption as the air and the inner wall of the air duct collide and rub against each other, which will cause the roughness of the inner wall of the air duct to become larger and larger, and the dust will adhere at a faster rate. A thick accumulation of dust is form...

AI Technical Summary

Problems solved by technology

But in reality, not all parts of the air duct elbow are easy to accumulate dust, that is to say, some surfaces that are not easy to accumulate dust or certain parts of the same surface are not easy to accumulate dust. This method will inevitably consume excess materials in parts that are not easy to accumulate dust, resulting in an increase in the cost of the entire air duct elbow

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