Cast pipe cement lining grinding unit

Abstract

The invention provides a casting pipe cement lining grinding unit, belongs to the technical field of ductile iron pipe production and production devices of ductile iron pipes, and particularly relates to grinding of ductile iron pipe cement linings. The casting pipe cement lining grinding unit is high in automation degree and production efficiency and good in processed ductile iron pipe quality. The technical scheme is that a front track frame and a rear track frame are arranged on the same horizontal line, a cement lining grinding mechanism is installed between the front track frame and the rear track frame, a gear-stopping mechanism is installed at one end of the front track frame away from the cement lining grinding mechanism, a chamfering mechanism is installed at the other end of the front track frame, a centering mechanism is installed in the middle of the front track frame, a stepping conveyor is installed below the chamfering mechanism and the cement lining grinding mechanism, and an electronic control system controls operation of all mechanisms. The casting pipe cement lining grinding unit is applied to chamfering of the ductile iron pipes and grinding of the cement linings.

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 Joints for Water and Gas Transmission" and GB / T13295 "Ductile Iron Pipes, Fittings and Accessories for Water and Gas Pipelines", when producing centrifugal ductile iron pipes, Its inner surface must be coated. Centrifugal ductile iron pipe products for water transportation are generally coated with a thin layer of cement mortar lining. . However, in various centrifugal ductile iron pipe production enterprises, due to factors such as process, equipment and personnel operation, after the centrifugal ductile iron pipe is coated with cement mortar lining, dripping and wrinkling will inevitably appear on the lining...

AI Technical Summary

Problems solved by technology

However, in various centrifugal ductile iron pipe production enterprises, due to factors such as process, equipment and personnel operation, after the centrifugal ductile iron pipe is coated with cement mortar lining, dripping and wrinkling will inevitably appear on the lining surface , sand leakage, peeling and blistering, etc. These defects are more prominent for large-scale pipes above DN400, which seriously affect product quality and product performance.

[0003] 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 for users and pollute water sources after they are delivered to users.

[0004] 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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