Pipeline inner and outer wall treating device for nodular cast iron pipe fitting

Abstract

The invention belongs to the technical field of cast iron pipe treating, and particularly relates to a pipeline inner and outer wall treating device for a nodular cast iron pipe fitting. The device comprises an inner wall treating mechanism and an outer wall treating mechanism, wherein the outer wall treating mechanism is arranged outside the inner wall treating mechanism, the inner wall treatingmechanism comprises four supporting legs and two transverse plates, the supporting legs are fixed to the outer walls of the two sides of each of the two transverse plates, the outer wall treating mechanism comprises a left square bracket-shaped plate, and a second reinforcing plate is fixed between the inner walls of the vertical sections of the two sides of the bottom end of the left square bracket-shaped plate. According to the pipeline inner and outer wall treating device for the nodular cast iron pipe fitting, a first motor is started to drive a grinding disc to rotate, a second motor is started to enable an incomplete gear to drive the first motor to reciprocate front and back through a transmission plate, and a third motor is started to enable two grinding cylinders to rotate under the transmission of a first gear, so that the problem that the inner wall and the outer wall of an existing nodular cast iron pipe need to be rapidly ground after the nodular cast iron pipe is annealedis solved, and the grinding efficiency of the inner wall and the outer wall of the nodular cast iron pipe after the inner wall and the outer wall of the nodular cast iron pipe are annealed is guaranteed.

Description

technical field [0001] The invention relates to the technical field of cast iron pipe treatment, in particular to a treatment device for the inner and outer walls of ductile iron pipe fittings. Background technique [0002] Ductile iron pipe refers to the pipe made by high-speed centrifugal casting of centrifugal ductile iron machine after casting molten iron above No. 18 with the addition of nodularizer. It is referred to as ball pipe, ductile iron pipe and ductile cast pipe. It is cast iron steel pipe, because the ductile iron pipe has the essence of iron and the performance of steel, so it is called this. Graphite in ductile iron pipes exists in a spherical form. Generally, the size of graphite is 6-7 grades. In terms of quality, the spheroidization grade of cast iron pipes is required to be controlled at 1-3 grades, and the spheroidization rate is ≥80%. Therefore, the mechanical properties of the material itself The performance has been improved. It has the essence of i...

AI Technical Summary

Problems solved by technology

[0003] Existing nodular cast iron pipes will have scales on the inner and outer walls after annealing, and at the same time, the inner wall of the centrifugally cast nodular cast iron pipes is likely to have different inner diameters, so it needs to be quickly polished, otherwise the inner circle size Larger ductile graphite main pipes will not meet the standards and cannot be used, resulting in waste. At present, the inner and outer walls of ductile iron pipes are often polished with wire brushes. The oxide scales cannot be polished off, and the labor intensity is high. If the inner wall and the outer wall of the cast iron pipe are quickly polished, it will cause a lot of waste and increase the production cost

Images