Sand grain friction device for old sand machinery regeneration

Abstract

The invention discloses a sand grain friction device for old sand machinery regeneration. The sand grain friction device comprises a friction box, wherein a coarse grinding cavity and a fine grindingcavity are formed in the upper part of the friction box, a sorting cavity is formed in the lower part of the friction box, a discharging opening is formed between the sorting cavity and the fine grinding cavity, a rotating shaft is in connection between the rough grinding cavity and the fine grinding cavity in a sleeving mode, a motor is installed on the top plate of the friction box, and an output shaft of the motor is connected to a rotating shaft; old sand inlets are formed in the two sides of the motor, a plurality of fixed grinding rods are installed on the inner wall of the rough grinding cavity, and a plurality of stirring rods are installed on the part, at the rough grinding cavity, of the rotating shaft; an electric heating pipe is in connection with the inner wall, at the rough grinding cavity, of the friction box in a sleeving mode; a grinding disc is in connection with the part, at the fine grinding cavity, of the rotating shaft; and friction teeth are installed between theouter wall of the grinding disc and the inner wall of the fine grinding cavity. The electric heating pipe heats the sand material, so that the temperature of an adhesive film is more easily reduced,the rotating shaft drives the stirring rods to rotate, the sand material is stirred so that the sand material is uniformly heated, and coarse grinding is carried out on the sand grains, the coarse grinding sand materials slide up and down along the inner wall of the grinding disc and the inner wall of the fine grinding cavity, the rotating shaft drives the grinding disc to rotate, so that the friction teeth perform strong friction on the sand grains.

Description

technical field [0001] The invention relates to the technical field of sand casting, in particular to a sand friction device for mechanically regenerating old sand. Background technique [0002] In sand casting, 1 to 7 tons of used old sand will be produced for every ton of casting produced. The old sand is usually recycled through mechanical regeneration. During regeneration, the invalid adhesive film on the surface of the sand grains needs to be removed to make it basically To restore the performance of the original sand, at present, the vibrator is used to make the sand materials collide, shear, and rub against each other in the shell to achieve the purpose of peeling off the residual adhesive film wrapped on the surface of the old sand grains. The friction between each other, the friction force is small, it takes a long time to rub to remove the residual adhesive film, the efficiency is low, and the friction force is small, it is not easy to rub the residual adhesive fil...

AI Technical Summary

Problems solved by technology

[0002] In sand casting, 1 to 7 tons of used old sand will be produced for every ton of casting produced. The old sand is usually recycled through mechanical regeneration. During regeneration, the invalid adhesive film on the surface of the sand grains needs to be removed to make it basically To restore the performance of the original sand, at present, the vibrator is used to make the sand materials collide, shear, and rub against each other in the shell to achieve the purpose of peeling off the residual adhesive film wrapped on the surface of the old sand grains. The friction between each other, the friction force is small, it takes a long time to rub to remove the residual adhesive film, the efficiency is low, and the friction force is small, it is not easy to rub the residual adhesive film, so we propose a sand friction for mechanical regeneration of old sand to solve the above problems

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