A kind of elastomer composite mud discharging rubber hose and its production process

Abstract

The invention provides an elastomer composite sludge discharging rubber pipe and a production process thereof. The elastomer composite sludge discharging rubber pipe is mainly composed of a cord fabric layer, a tightening steel wire, a rubber pipe outer layer and a flange steel short sleeve, an intermediate layer which is a canvas layer is arranged on the inner surface of the cord fabric layer of the sludge discharging rubber pipe, and a composite layer is arranged on the inner surface of the intermediate layer and made of polyurethane materials or polyurea materials. After a pipe blank is prepared, the elastomer composite sludge discharging rubber pipe is made by respectively adopting a pouring forming process, a centrifugation forming process or a spraying forming process. Due to omission of inner-layer rubber of existing sludge discharging rubber pipes, vulcanization time of the pipe blank of the sludge discharging rubber pipe is shortened; a single-face rubber lining process is adopted to the intermediate canvas layer, so that bonding strength of an elastomer and the cord fabric layer is improved; and a special support is designed and used in the processes of centrifugation and spraying, so that the problem of deformation of a pipe body during manufacturing is solved and thickness uniformity of the composite layer is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a mud discharge rubber hose and a production process thereof. Background technique [0002] Existing dredger discharge hoses generally use natural rubber as the inner rubber. Since the dredged soil is transitioning from silt and fine silt to medium-coarse sand, the working pressure will increase. The inner rubber of the traditional mud discharge hose is severely worn and its service life is significantly shortened, making it difficult to adapt to the current construction requirements. During the construction, the dredging efficiency is often affected due to the damage of the mud discharge hose, resulting in a decrease in production efficiency and an increase in production costs. [0003] The existing mud discharge hose production process first forms the inner rubber, then assembles the flange steel short sleeve and the cord layer, and finally vulcani...

AI Technical Summary

Problems solved by technology

The inner rubber of the traditional mud discharge hose is severely worn and its service life is significantly shortened, making it difficult to adapt to the current construction requirements

During construction, the dredging efficiency is often affected by the damage of the mud discharge hose, resulting in a decrease in production efficiency and an increase in production costs

[0003] The existing mud discharge hose production process first forms the inner layer rubber, then assembles the flange steel short sleeve and the cord layer, and finally vulcanizes. The vulcanization time is long, and there are still problems such as easy deformation of the pipe body during the manufacturing process.

[0004] In order to increase the wear resistance of the rubber hose, wear-resistant materials can be used to replace the inner layer glue, but the bonding strength between the conventional wear-resistant materials and the ply composed of polyester or nylon is very poor, and for soft rubber hoses, there is no mature one at present. Wear-resistant layer forming process, because the tube body is easy to bend and deform when rotating on the centrifuge in the ordinary centrifugal forming or spraying forming process, resulting in uneven thickness of the wear-resistant layer

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