A 90° rectangular wear-resistant elbow and its wear-resistant treatment method

Abstract

The invention discloses a 90° rectangular wear-resistant elbow and a wear-resistant treatment method for the elbow, comprising an upper top plate, a lower bottom plate, an outer arc surface and an inner arc surface; an upper top plate, a lower bottom plate, an outer arc surface and an inner arc surface A 1 / 4-circle arc tube is obtained by enclosing four surfaces; the upper top plate is the same as the lower bottom plate; the lower bottom plate and the inner arc surface are divided into high friction zone, medium friction zone and low friction zone; Wear-resistant materials with different wear-resistant thicknesses are respectively used on the surfaces of the high-friction area and the medium-friction area located inside the elbow. The present invention adopts different wear-resistant materials in the parts of different friction and shear forces, which can effectively resist the grinding of the pipeline by the material during the pneumatic conveying process, so that different parts of the pipeline can be strengthened according to the degree of grinding, and at the same time, expensive materials can be saved. Reduce the cost of the elbow.

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 wear-resistant elbow and a wear-resistant treatment method for the elbow. Background technique [0002] In the process of conveying abrasive materials such as pneumatic and pumped slurry, because the conveying medium generally has the characteristics of high hardness, fast flow rate, and large flow rate, it will continue to impact, wear, and corrode the pipe wall for a long time during the conveying process. Fatigue the pipeline and gradually wear it out. Especially when the wear-resistant pipeline transports abrasive materials (such as ash, coal powder, ore powder, tailings, cement, etc.), there is a problem that the wear-resistant pipeline wears quickly, especially the bend of the pipeline. At the local resistance member such as the head, the collision between the mate...

AI Technical Summary

Problems solved by technology

But not all parts will be subject to great friction, only the part with a large velocity gradient in the pipeline will be severely frictioned, and the traditional method of attaching the inner wall of the pipeline not only leads to a large internal resistance of the pipeline, but also increases energy consumption , and requires a larger type of air supply fan equipment

At the same time, the area of ​​air ducts in existing buildings with centralized ventilation and air conditioning is very large. If traditional wear-resistant treatment methods are used, a large amount of wear-resistant materials need to be used, which is expensive

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