A Composite Used Sand Recycling Machine

Abstract

A composite used sand regenerator comprises a powerful ash removing machine and a rubbing type regenerator, wherein the powerful ash removing machine is provided with a rack; a sand box is arranged on the rack; the inside of the sand box is divided into a left cavity, a middle cavity and a right cavity by a first partition and a second partition; two rotating shafts are respectively arranged in the left cavity and the middle cavity; two ends of each rotating shaft are rotatably arranged on the rack or the outer wall of the sand box; a sand polishing wheel is arranged on each rotating shaft; the two rotating shafts are driven to rotate by respective driving devices I; a plurality of air injection holes are formed in the bottom of the sand box; a nozzle is arranged at each air injection hole; the nozzles are connected to an air supply system; an air box is arranged at the top of the sand box; an air outlet is formed in the top of the air box; the rubbing type regenerator is arranged above the right cavity through four supporting legs; a discharging opening of the rubbing type regenerator is communicated with the right cavity; used sand passing openings are respectively formed in the first partition and the second partition; and a regenerated sand outlet is formed in a side wall of the left cavity. The composite used sand regenerator is high in used sand regeneration efficiency and good in regeneration effect.

Description

technical field [0001] The invention relates to a used sand recycling machine, in particular to a compound type used sand recycling machine. Background technique [0002] During sand casting, 1 to 7 tons of used sand will be produced for every 1 ton of casting produced. There are basically two ways to use old sand, that is, reuse of old sand and reuse of old sand after regeneration. After the casting mold is cast, if the binder in most of the molding sand has not undergone irreversible changes, as long as the impurities are removed, the original performance of the molding sand can be restored after ash suction cooling and re-mixing. This treatment method is called For the reuse of old sand, generally only clay-bonded molding sand can be reused. For sand molds and cores that are chemically hardened (such as sand molds and cores made of oil sand, water glass sand and various resin sands), the hardening reaction of the binder is irreversible. In this case, the old sand It ca...

AI Technical Summary

Problems solved by technology

In the prior art, the equipment used for dry regeneration is simple, the scope of application is small, and the regeneration effect is not ideal

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