Grinding unit for cement lining of cast tube

Abstract

The invention discloses a cast pipe cement lining grinding unit, which belongs to the technical field of ductile iron pipe production and its production equipment manufacturing, and in particular relates to the cement lining grinding of ductile iron pipes; the technical problem to be solved is to provide a cast pipe cement The liner grinding unit has high degree of automation, high production efficiency, and good product quality of processed ductile iron pipes; the technical scheme adopted is: the front rail frame and the rear rail frame are set on the same horizontal line and the front rail frame and the rear rail frame are set at the same level A cement lining grinding mechanism is installed between them, the end of the front track frame far away from the cement lining grinding mechanism is equipped with a stop mechanism, the other end of the front track frame is equipped with a chamfering mechanism, and the middle of the front track frame is installed with a centering The mechanism and the stepping conveyor are installed under the chamfering mechanism and the cement lining grinding mechanism, and the electric control system controls the operation of all mechanisms; the invention is used for chamfering of ductile iron pipes and cement lining grinding.

Description

technical field [0001] The invention discloses a cast pipe cement lining grinding unit, which belongs to the technical field of ductile iron pipe production and production equipment manufacturing, and in particular relates to cement lining grinding of ductile iron pipes. Background technique [0002] According to ISO2531 "Ductile iron pipes, fittings, accessories and their joints for water and gas transmission" and GB / T13295 "Water [0003] and ductile iron pipes, fittings and accessories for gas pipelines" and other standards, when producing centrifugal ductile iron pipes, the inner surface [0004] Must be coated. Centrifugal ductile iron pipe products for water transportation are generally coated with a thin layer of cement mortar lining. [0005] flow resistance. However, in various centrifugal ductile iron pipe production enterprises, due to the influence of factors such as process, equipment and personnel operation, [0006] After the centrifugal ductile iron pipe ...

AI Technical Summary

Problems solved by technology

[0006] After the centrifugal ductile iron pipe is coated with cement mortar lining, it is inevitable that there will be defects such as dripping, wrinkling, sand leakage, peeling and foaming on the surface of the lining. More prominent, it seriously affects product quality and product performance

[0007] In addition, after the cement mortar lining of the coated centrifugal ductile iron pipe dries up, there will often be a thin cement mortar layer on the lining surface that is easy to peel off, and some sand and dust will adhere to the surface. If it is not treated or treated incompletely, such products will cause troubles to users and pollute water sources after they are delivered to users.

[0008] In response to the above problems, the current treatment methods adopted by most domestic production plants are: first, manual grinding and cleaning, this treatment method is too simple, the production efficiency and treatment effect are far from the requirements, and it is not advisable; the second is to use mechanical Grinding the cement mortar lining surface of the defective centrifugal ductile iron pipe by means of grinding treatment, but the current domestic production plants adopt mechanical grinding treatment of the cement mortar lining surface technology is not mature enough, the mechanical equipment is relatively simple, the degree of automation is low, and the production The efficiency is poor, and the grinding effect is difficult to meet the product quality requirements

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