Molding sand treatment device

Abstract

The invention discloses a molding sand treatment device. The device comprises a tower box, supporting leg frames are fixedly connected to the bottom of the tower box, a box cover is arranged at the top of the tower box, a feeding hopper is fixedly connected to the box cover, a cold air circulating system communicates between the side wall of the tower box and the box cover, a stirring assembly isarranged in the tower box, a filtering assembly is movably arranged on the stirring assembly, the lower end of the stirring assembly is fixedly connected with a dispersing assembly, the lower end of the dispersing assembly is fixedly connected with a discharging hopper, and the lower port in the discharging hopper is located in the tower box. According to the device, through the stirring assembly,the filtering assembly, the cold air circulating system, the dispersing assembly and the discharging hopper, molding sand is scattered, filtered, cooled, dispersed and collected, reducing of moldingsand temperature is quick, molding sand mixing is even, and the casting quality is guaranteed; impurities in the molding sand are filtered multiple times, so that the particle size uniformity of the molding sand is guaranteed; and the device has the beneficial effects that cooling, filtering, impurity removing, scattering and rapid collecting on the molding sand are integrated, the structure is simple, the operation is convenient, and the molding sand treatment efficiency is high.

Description

technical field [0001] The invention relates to the technical field of investment casting, in particular to a molding sand processing device. Background technique [0002] In the production process of investment casting, castings need to be filled with lost foam in molding sand before pouring, and then poured under negative pressure. The molding sand after pouring has the following defects: 1. The temperature is too high and it is easy to agglomerate together. Uneven mixing is used again, which affects the quality of the mold; 2. The molding sand contains metal waste and large particles of impurities, which cannot ensure the uniform particle size of the molding sand; most of the existing devices for processing the molding sand are single-handling, which is inconvenient to operate and has a complex structure. The processed molding sand is inconvenient to collect and the processing efficiency is low. Contents of the invention [0003] The main purpose of the present inventi...

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Problems solved by technology

[0002] In the production process of investment casting, castings need to be filled with lost foam in molding sand before pouring, and then poured under negative pressure. The molding sand after pouring has the following defects: 1. The temperature is too high and it is easy to agglomerate together. Uneven mixing is used again, which affects the quality of the mold; 2. The molding sand contains metal waste and large particles of impurities, which cannot ensure the uniform particle size of the molding sand; most of the existing devices for processing the molding sand are single-handling, which is inconvenient to operate and has a complex structure. It is inconvenient to collect the processed molding sand and the processing efficiency is low

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