Anti-loosening double-wall corrugated tube

Abstract

The invention discloses an anti-loosening double-wall corrugated tube. The anti-loosening double-wall corrugated tube comprises reinforcing ribs, an inner-layer tube and an outer-layer tube, wherein the outer-layer tube is arranged on the outer part of the inner-layer tube in a concentric mode; the reinforcing ribs are spirally arranged between the inner-layer tube and the outer-layer tube; firstspiral slots which correspond to the reinforcing ribs are arranged on the outer wall of the inner-layer tube in an indent mode; second spiral slots which correspond to the reinforcing ribs are formedin the inner wall of the outer-layer tube in the indent mode; blind holes which point towards the first spiral slots and the second spiral slots are formed in the surfaces of the reinforcing ribs in the indent mode; positioning columns which extend into the blind holes are separately arranged in the first spiral slots and the second spiral slots; and reinforcing belts which correspond to the reinforcing ribs are spirally arranged outside the outer-layer tube. According to the anti-loosening double-wall corrugated tube disclosed by the invention, the reinforcing ribs are especially arranged toimprove integral anti-compression effect, so that bending performances are also ensured; and the blind holes are matched with the positioning columns, so that matching between the inner-layer tube andthe outer-layer tube is reinforced, and therefore, the loosening problem is avoided.

Description

technical field [0001] The invention relates to the field of bellows, in particular to a loose-proof double-wall bellows. Background technique [0002] There are many types of corrugated pipes, among which plastic corrugated pipes are widely used, especially in the field of water supply and drainage. Plastic corrugated pipes greatly improve the convenience of construction with their excellent waterproof effect and bending performance. [0003] Most of the plastic bellows have a single-layer structure. In order to enhance the structural strength, some plastic bellows have a double-layer structure. However, the materials of the double-layer structure are prone to loosening problems, and even gradually separate. The use stability is poor and needs to be improved. Contents of the invention [0004] The purpose of the present invention is to provide a loose-proof double-wall corrugated pipe, which can avoid the loosening of the double-layer material and improve the structural s...

AI Technical Summary

Problems solved by technology

[0003] Plastic corrugated pipes mostly have a single-layer structure. In order to enhance the structural strength, some plastic corrugated pipes also adopt a double-layer structure. However, the materials of the double-layer structure are prone to loosening problems, and even gradually separate. The use stability is poor and needs to be improved.

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