In-pipe pouring device of concrete water pipe for water supply and drainage

Abstract

The invention discloses an in-pipe pouring device of a concrete water pipe for water supply and drainage. The in-pipe pouring device structurally comprises a telescopic pipe, a connecting platform, apouring base body, a laminating ring, a cylinder, a circular expansion connector and a semi-arc inner telescopic rod. The in-pipe pouring device has the beneficial effects that the telescopic end of the cylinder is connected with the circular expansion connector and the laminating ring, the two parts are matched so that the laminating ring is firmly attached to the pipe inner wall, and the stability of the pouring base body is improved; a plurality of injection needles are installed in a concrete injection pipe and are inserted into concrete, an air entraining agent in a storage chamber is injected into the concrete through nozzles on the injection needles, and the fluidity of the concrete is improved; and the concrete is subjected to diameter reduction by an arc petal, a pressure plate drives the nozzles to straightly extend forwards, the injection distance between the nozzles and gaps can be shortened, and the injection efficiency can be improved; and through the change of the pipe diameter, the injection flow velocity of the nozzles can be increased, so that the concrete can be injected into the narrow gaps, the gaps can be filled with the concrete, and cavities can be prevented.

Description

technical field [0001] The invention relates to an in-pipe pouring device for concrete water pipes for water supply and drainage, which belongs to the field of water supply and drainage equipment. Background technique [0002] In the foundation of urban construction, the sewer pipes are all made of concrete water pipes, which are used for flood control and drainage and discharge of domestic sewage. After the pipes are placed, the gaps between the ends of the pipes must be filled for sealing. During the gap filling There are following deficiencies: [0003] For the thicker flat-mouthed reinforced concrete cement pipe, there are relatively narrow gaps in the interface between the joints in the pipe and there are protrusions on the interface section. Voids are easy to exist. During the drainage process, the large flow of drainage generates vibrations, which makes the inner and outer layers peel off, and cracks are prone to appear between the gaps, resulting in leakage. Conte...

AI Technical Summary

Problems solved by technology

[0003] For thicker flat-mouthed reinforced concrete cement pipes, there are relatively narrow gaps in the joints between the joints in the pipes and there are protrusions on the joint cross-section. Voids are easy to exist. During the drainage process, the large flow of drainage generates vibrations, causing the inner and outer layers to peel off, and cracks are prone to appear between the gaps, resulting in leakage

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