Blockage preventing device for shotcrete pumping pipe

Abstract

The invention discloses a blockage preventing device for a shotcrete pumping pipe. The blockage preventing device comprises an inner pipe, an outer pipe and self-oscillating rings, wherein the outer pipe is formed by connecting at least two unit pipes by connecting components, and a splicing length is free and flexible; one self-oscillating ring is arranged inside each unit pipe, so that the dominant function of oscillating blockage prevention is realized; the self-oscillating rings are arranged on the outer wall of the inner pipe in a sleeving way and the number of the self-oscillating rings is at least two, so that the oscillating efficiency is guaranteed; a pipe body of the outer pipe is made of polyurethane rubber (PUR), so that various outside contact conditions and oscillating reduction requirements are met; the inner pipe and the connecting components are made of polybutylene (PB), so that concrete is efficiently conveyed; by using all the functions of three parts, the concrete is efficiently conveyed, the problem of pipe blockage in the shooting process is better solved, and the working efficiency of the shotcreting is improved; meanwhile, the occurrence of pipe explosion accidents is avoided, and the safety of working is guaranteed.

Description

technical field [0001] The invention relates to an anti-blocking device for pumping concrete pipelines, in particular to an anti-clogging device for sprayed concrete pumping pipes, which belongs to the field of building construction. Background technique [0002] Shotcrete is an important work in construction operations such as mine roadway support, tunnel support and slope protection. Traditional spraying construction mostly uses dry spraying or tidal spraying. These spraying methods make the dust concentration large and the slurry It is very easy to collapse, on the one hand, it is easy to cause "pneumoconiosis" of workers, which affects their health; on the other hand, the collapse of slurry causes a lot of waste of concrete, and the project cost also increases accordingly. In view of this reality, the State Administration of Work Safety issued a document in 2011 requiring that the "dry spray" or "wet spray" spraying process be discontinued and gradually switch to the "we...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that the sprayed concrete pumping pipe is easily blocked in the prior art, and to disclose an anti-blocking device for the sprayed concrete pumping pipe

Images