Double-layer abrasion-resistant bent pipe for concrete conveying

Abstract

The invention belongs to the technical field of medium conveying pipelines, and relates to a double-layer abrasion-resistant bent pipe for concrete conveying. The double-layer abrasion-resistant bent pipe for concrete conveying comprises a protective pipe with a certain curvature. An inner pipe is arranged in the protective pipe in a matched mode, and a filling space is formed between the inner pipe and the protective pipe and internally provided with filler. Standard flanges are arranged at the two ends of the protective pipe. Plugs are fixedly arranged on the inner walls of the standard flanges. The two ends of the inner pipe abut against and make contact with the corresponding plugs. A notch is formed in the neck portion of the inner pipe and provided with an abrasion-resistant portion in a matched mode. According to the double-layer abrasion-resistant bent pipe for concrete conveying, different abrasion-resistant materials are used specific to the difference of product stress, the service life of the product is guaranteed, the production cost is lowered greatly, and the service life of the product is similar to that of a high-cost product. Demand for the base material and labor expenses are greatly reduced, and the effect of environment emission reduction is realized.

Description

technical field [0001] The invention belongs to the technical field of medium conveying pipes, and relates to a double-layer wear-resistant elbow pipe for concrete conveying. Background technique [0002] There are mainly 3 kinds of elbows in the market: ① high manganese steel casting elbows (manganese 13mm). ②High chromium liner, outer skin of about 3mm, and double-layer wear-resistant pipe composited by the two, the cost is relatively high. ③Inner arc and outer arc are two different materials composite double-layer wear-resistant pipe. [0003] The main disadvantages of existing products: ① high manganese steel elbow, low cost, low service life, the service life of conveying concrete is only about 15,000 cubic meters. ② High chromium composite wear-resistant pipe, the service life of manganese steel pipe is improved, and the service life is about 60,000 square meters, but the cost is high. ③ The cost of materials is reduced, and the service life is about 60,000 square m...

AI Technical Summary

Problems solved by technology

②High chromium liner, outer skin of about 3mm, and double-layer wear-resistant pipe composited by the two, the cost is relatively high

[0003] The main shortcomings of existing products: ① high manganese steel elbow, low cost, low service life, the service life of conveying concrete is only about 15,000 cubic meters

③ The cost of materials is reduced, and the service life is about 60,000 square meters. However, the process is complicated, the labor cost is high, and the size is difficult to control consistently, and the finished product rate is not high.

Images