Clay sand mixer

Abstract

The invention discloses a clay sand mixer which adopts two structural forms. The first structural form is that the clay sand mixer comprises quantitative feeding mechanisms, a dry material mixing mechanism and a wet material mixing mechanism. The second structural form is that the clay sand mixer comprises quantitative feeding mechanisms and a mixing mechanism. A dry material mixing area and a wet material mixing area are arranged in a mixing barrel of the mixing mechanism. The working principles of the clay sand mixers of the two structural forms are roughly the same, and are that raw materials of sand, clay and pulverized coal are added in the dry material mixing mechanism / the dry material mixing area at a certain ratio to be scattered and uniformly mixed, and the obtained dry sand and water are added in the wet material mixing mechanism / the wet material mixing area at a certain ratio to be mixed, so as to produce sand suitable for modelling. The two sand mixers cooperate with corresponding electrified components so as to realize continuous production. Besides, since the two sand mixers adopt the continuous production manner of adding the raw materials and producing the sand synchronously, sand in the mixing mechanism / the material mixing mechanism is less, and the needed mixing power is reduced greatly.

Description

technical field [0001] The invention relates to a clay sand mixer. Background technique [0002] At present, the clay sand mixers used in casting mainly include two types: roller sand mixers and rotor sand mixers. [0003] Among them, the roller type sand mixer is used for mixing molding sand and core sand in the foundry. The motor is connected with the input shaft of the reducer by the elastic pin coupling, and after three stages of reduction, it is driven by the output shaft of the reducer. The crosshead rotates counterclockwise. The curved arm fastened on the crosshead, the grinding wheel, and the inner and outer scrapers rotate together with the crosshead. The roller type sand mixer is generally equipped with two rollers and two scrapers. Among them, the rollers have the function of rolling and kneading, so that water, clay and other additives are evenly distributed on the surface of the sand grains, and the scrapers make the sand blocks Loosen, and scrape the unmixed...

AI Technical Summary

Problems solved by technology

Since the above two types of sand mixers are all batch sand mixers, continuous production cannot be realized.

In addition, the wheel-type sand mixer often causes the phenomenon of "cake pressing" during sand mixing.

Since the rotor type sand mixer has no grinding wheel, and the scraper and rotor are generally buried in the sand layer, the height of the sand layer on the sand mixer chassis can be increased, and the feeding amount at one time is also more than that of the roller type sand mixer. It is due to the thick sand layer on the chassis of the rotor sand mixer, which increases the power consumption accordingly

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