Equipment and its manufacturing process for manufacturing concrete pressure pipes with internal mold rigid expansion

Abstract

The invention belongs to the field of building material cement product manufacturing and particularly relates to an internal mold rigid expansion concrete pressure pipe manufacturing device and process. By the adoption of an existing concrete pipe manufacturing process, the inner surface of a formed pipe is uneven, the roughness rate is large, connector sealing is poor, and consequently the loss of water conveying capacity and power in the water conveying process of the pipe is large. According to the technical scheme, the internal mold rigid expansion concrete pressure pipe manufacturing device is composed of a boosting control chamber, a vibrating table, a boosting device, an internal mold, an external mold and a sealing device, and the novel rigid internal mold and a pressure constancy device are adopted. The internal mold rigid expansion concrete pressure pipe manufacturing device and process have the advantages that the inner surface of a produced pipe is smooth; data of inner diameters on all parts of the produced pipe are identical and meet the technical requirements of national standards; pipe quality accidents caused by a large pressure fluctuation in the pressurizing and steaming process are avoided; manpower, materials and financial resources are greatly saved, production cost is effectively lowered, and labor productivity is improved.

Description

Technical field [0001] The invention belongs to the manufacturing field of building materials and cement products, and specifically relates to an equipment for rigidly expanding an inner mold to manufacture a concrete pressure pipe and a manufacturing process thereof. Background technique [0002] In urban construction, village and town construction, industrial and mining enterprise construction, and farmland water conservancy construction, pipelines of various specifications must be laid. Concrete pressure pipe is a special pipe used in drinking water delivery projects. Decades of production and use practices at home and abroad have proved that it is economical and reasonable to choose concrete pressure pipes when laying pipelines. [0003] At present, the main processes for producing concrete pressure pipes at home and abroad are vibrating extrusion process and pipe core winding process. The principle of the vibration extrusion process is to use the rubber sleeve on the outer l...

AI Technical Summary

Problems solved by technology

Because the rubber sleeve is flexible, when a large area of ​​extruded concrete encounters uneven concrete and uneven aggregates, the inner surface of the pipe will be uneven, the roughness is large, and the interface seal is poor, resulting in the water delivery of the pipeline during the water delivery process. and power loss, which is especially serious after the rubber sleeve is damaged and repaired

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