Casting molding sand recycling, crushing and screening device

Abstract

The invention discloses a casting molding sand recycling, crushing and screening device. The casting molding sand recycling, crushing and screening device comprises a crushing box body, wherein a feeding hopper is arranged at the upper end of the crushing box body, a discharging hopper is arranged in the middle of the lower end of the crushing box body, and the four corners of the lower end of thecrushing box body are fixedly connected with the same rack. According to the casting molding sand recycling, crushing and screening device, driving crushing teeth and driven crushing teeth in a crushing cavity are meshed with each other, so that molding sand is crushed in time; meanwhile, a plurality of material returning guide plates on the inner wall of a conveying screen net are used for conveniently conveying the molding sand which is not completely crushed to a crushing position for secondary crushing, so that the molding sand is prevented from being not completely crushed at a time, andthe crushing effect is improved; and meanwhile, a single driving motor runs, a driving roller and a driven roller in the crushing cavity are driven to run through belt transmission, so that the driving crushing teeth and the driven crushing teeth carry out crushing operation, meanwhile, the belt drives the conveying screen net to work, and the production cost investment is reduced.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment, in particular to a recycling, crushing and screening device for foundry sand. Background technique [0002] Molding sand is generally made by mixing molding materials such as raw sand for casting, molding sand binder and auxiliary additives in a certain proportion. Molding sand can be divided into clay sand, water glass sand, cement sand, and resin sand according to the different binders used. etc. Clay sand, water glass sand and resin sand are the most used. [0003] However, in the actual use of the existing foundry sand recovery crushing and screening device, because the molding sand can only be crushed once, the crushing effect is not complete, and then some lumps of sand are retained, and there are many crushing operations and material transfer operations at the same time. It is driven by multiple motors, and the cost investment is large. Therefore, we propose a foundry sand re...

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Problems solved by technology

[0003] However, in the actual use of the existing foundry sand recovery crushing and screening device, because the molding sand can only be crushed once, the crushing effect is not complete, and then some lumps of sand are retained, and there are many crushing operations and material transfer operations at the same time. It is driven by multiple motors, and the cost investment is large. Therefore, we propose a foundry sand recycling crushing and screening device to solve the above-mentioned problems

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