A production line for making plastic-lined socket-type cast iron pipes

Abstract

Provided is a production line for manufacturing a liner plastic socket type cast iron pipe. According to the adopted technical scheme, a plurality of platforms, a plurality of pairs of supports arranged on the left side of one platform, rolling wheels, a deformation device in the middle of one platform, a locating device on the right side of one platform and a stretching device at the right end of one platform, and an inflation locking device arranged on the other platform are included, and a using method of the production line is also provided. The production line overcomes the defects that as cement mortar liners are used by existing ordinary cast iron pipes, the weight of the pipe bodies is increased, construction and installation are not facilitated, the cement liners are inconvenient to machine, the adhesive force is poor, falling off is caused easily in the construction and installation process, the manufacturing difficulty of epoxy ceramic liners is large, equipment is complex, and cost is high. The production line is suitable for on-line deformation, stretching, heating and expanding procedures and corresponding on-line operations of various liner pipes, and is especially suitable for production of liner plastics of cast iron pipes used for water supply of municipal engineering.

Description

technical field [0001] The invention relates to a production line for making plastic-lined socket-type cast iron pipes. Background technique [0002] Existing ordinary cast iron pipes are often used as water supply pipelines because of their better overall performance. In order to solve the problem of corrosion resistance of cast iron pipes, the most common method is to use cement mortar lining or epoxy ceramic lining in cast iron pipes It is the preferred anti-corrosion method for this type of pipeline; the cement mortar lining is used as a drinking water delivery pipeline. Because the inner wall is not smooth, the water flow resistance is large, and it is easy to scale. The reactive substances produced by cement hardening affect the water quality, and the thickness of the lining is relatively large ( 3-12mm), the water transfer efficiency is low, the cement lining will increase the weight of the entire pipe body, which is not conducive to construction and installation, and...

AI Technical Summary

Problems solved by technology

[0002] Existing ordinary cast iron pipes are often used as water supply pipelines because of their better overall performance. In order to solve the problem of corrosion resistance of cast iron pipes, the most common method is to use cement mortar lining or epoxy ceramic lining in cast iron pipes It is the preferred anti-corrosion method for this type of pipeline; the cement mortar lining is used as a drinking water delivery pipeline. Because the inner wall is not smooth, the water flow resistance is large, and it is easy to scale. The reactive substances produced by cement hardening affect the water quality, and the thickness of the lining is relatively large ( 3-12mm), the water transfer efficiency is low, the cement lining will increase the weight of the entire pipe body, which is not conducive to construction and installation, and the cement lining is inconvenient to process, the adhesion is poor, and it is easy to cause falling off during construction and installation. There are still many difficulties to be solved, so the cement lining is not a good lining method; although the epoxy ceramic lining will have high adhesion and smoothness, it is difficult to manufacture, the equipment is complicated, and the cost is high. It can be used in special projects and cannot be widely used

Images