Steel mold for externally coating nodular cast iron pipe with cement mortar

Abstract

The invention relates to a steel mold for externally coating a nodular cast iron pipe with cement mortar. The steel mold comprises a top die; the top die comprises a locating detent and a socket ring; the socket ring is supported by a socket adjusting ring positioned at the inner side of the socket ring; the locating detent is used for supporting an outer die which is positioned at the outer side of the positioning detent; the socket adjusting ring and the locating detent are arranged coaxially; the outer die comprises an outer die body and an outer die expansion body which is connected to the upper part of the outer die body; the outer die body is in transition connection with the outer die expansion body through an inverted cone; a material stop ring is arranged between the top die and the outer die; the material stop ring can be arranged on the locating detent and can also fall to be supported by the inverted cone in the outer die. The steel mold for externally coating the nodular cast iron pipe with cement mortar, disclosed by the invention, is simple in structure and capable of realizing quite good production of the nodular cast iron pipe.

Description

technical field [0001] The invention relates to a cement mortar steel mold wrapped with a ductile iron cast pipe, which belongs to the technical field of PCCP pipe manufacturing equipment. Background technique [0002] At present, most domestic water and drainage pipes use prestressed steel cylinder concrete pipes and reinforced concrete pipes. Although concrete pipes have the advantages of high strength, good rigidity, and low cost compared with steel pipes, cast iron pipes, and corrugated pipes, their sealing performance, corrosion resistance, and water flow The three major problems of passability have not been fundamentally improved and improved. The new material ductile iron cast pipe products have the characteristics of high strength, high rigidity, corrosion resistance, smooth inner wall, and small fluid resistance, which can well make up for the shortage of steel cylinder concrete pipes, but there is still a lack of ideal equipment for preparing such pipes. Contents...

AI Technical Summary

Problems solved by technology

The new material ductile iron cast pipe products have the characteristics of high strength, high rigidity, corrosion resistance, smooth inner wall, and small fluid resistance, which can well make up for the shortage of steel cylinder concrete pipes, but there is still a lack of ideal equipment for preparing such pipes

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