Molding sand dust-free treatment and recovery device for molding sand casting

Abstract

The invention discloses a molding sand dust-free treatment and recovery device for molding sand casting, and relates to the technical field of molding sand recovery. The molding sand dust-free treatment and recovery device comprises a recovery box; a primary crushing device is arranged at the upper part in the recovery box; a screening device is arranged below the primary crushing device; an air inlet hood and an exhaust hood are fixedly connected to the positions, on two sides of the screening device, of the inner wall of the recovery box; a buffering cover is arranged below the screening device; and a discharging conveying belt is arranged between two bases. According to the molding sand dust-free treatment and recovery device, the primary crushing device is arranged, so that caked molding sand polymers can be crushed into small blocks; the screening device is arranged, so that the small-block molding sand polymers can be crushed again to form molding sand monomers and powdery impurities; a filter screen can be prevented from being blocked through a brushing device; a discharging buffering device is arranged, so that the discharging speed can be decreased; and when the screeningdevice and the discharging buffering device work, dust mixed in the molding sand can be blown away through flowing of airflow, so that dust-free recovery and treatment can be achieved, and the recovery and treatment effect on the molding sand is good.

Description

technical field [0001] The invention relates to the technical field of molding sand recycling, in particular to a dust-free processing and recycling device for molding sand used in molding sand casting. Background technique [0002] In the field of mechanical casting, molding sand is often used for molding and casting. In order to reduce production costs, molding sand needs to be reused. However, after casting, the molding sand contains various impurities, so it needs to be recycled by machinery. The existing easy-to-use molding sand recovery devices generally crush the molding sand blocks first, and then use the different gravity between the molding sand and impurities to control the wind force to screen, so as to achieve the purpose of recycling molding sand, but the impurity removal effect of this method is not good. Better, the molding sand is often doped with a lot of impurities, which requires repeated removal of impurities, thus reducing the efficiency of removal of i...

AI Technical Summary

Problems solved by technology

The existing easy-to-use molding sand recovery devices generally crush the molding sand blocks first, and then use the different gravity between the molding sand and impurities to control the wind force to screen, so as to achieve the purpose of recycling molding sand, but the impurity removal effect of this method is not good. Good, the molding sand is often doped with more impurities, which needs to be removed repeatedly, thus reducing the efficiency of impurity removal

[0003] At present, when removing impurities from molding sand, the crushing and winnowing of molding sand blocks need to be completed through different equipment, resulting in incoherent winnowing and prone to dust escaping. In addition, due to the heavy molding sand, the falling speed Faster, poor winnowing effect

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