Sand crushing device for nodular cast iron production and implementation method thereof

Abstract

The invention discloses a sand crushing device for nodular cast iron production and an implementation method thereof, and belongs to the technical field of nodular cast iron production. The sand crushing device comprises a sand collecting box and a sand crushing box, wherein the sand crushing box is arranged on the inner side of the upper end of the sand collecting box, a sand block rolling sand crushing mechanism is arranged on the inner side of the sand crushing box, guide sliding blocks are installed on the end faces of the two sides of the sand crushing box, the guide sliding blocks sleeve strip-shaped positioning columns, the strip-shaped positioning columns are distributed at the top of the sand collecting box in parallel, a sand shaking mechanism is arranged on the inner side of the sand collecting box, and the sand shaking mechanism shakes the sand crushing box to move in the sand collecting box. According to the sand crushing device for nodular cast iron production and the implementation method thereof, used sand blocks are hammered and rolled through a lifting sand block rolling plate hammer and sand block hammer teeth, the sand crushing box moves so that the sand blocks in the sand crushing box can be shaken and rolled, the sand blocks are laid at the bottom of the inner side of the sand crushing box again, the sand blocks are hammered and rolled again through the lifting sand block rolling plate hammer and the sand block hammer teeth, so that the crushing effect of the used sand is good, and the crushing efficiency is high.

Description

technical field [0001] The invention relates to the technical field of ductile iron production, in particular to a sand crushing device for ductile iron production and an implementation method thereof. Background technique [0002] Ductile iron is a high-strength cast iron material developed in the 1950s. Its comprehensive performance is close to that of steel. It is based on its excellent performance that it has been successfully used to cast some complex mechanical properties with strength, toughness and wear resistance. Parts with high performance requirements. Ductile iron has rapidly developed into a cast iron material that is second only to gray cast iron and is widely used. The so-called "substituting iron for steel" mainly refers to ductile iron. Spheroidal graphite cast iron is obtained through spheroidization and inoculation treatment, which effectively improves the mechanical properties of cast iron, especially improves plasticity and toughness, thereby obtainin...

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Problems solved by technology

[0003] There is a large amount of old sand discharged in the process of ductile iron casting, which not only causes a waste of casting resources, but also causes great pollution to the environment. The recycling and reuse of old sand has become an urgent problem to be solved in the foundry industry. Among them, broken sand is used sand An important link in the recycling process, the degree of fragmentation of sand blocks directly affects the subsequent steps of the recycling process

[0004] The existing sand crushing device basically puts sand blocks into the cavity, and uses a rotating stirring device to stir and break them. This kind of sand crushing method makes the sand crushing effect poor and the sand crushing efficiency is low.

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