Novel rotor type sand mixing machine and sand mixing method

Abstract

The invention discloses a novel rotor type sand mixing machine and a sand mixing method. The novel rotor type sand mixing machine comprises a pre-mixing sand barrel, a conveying belt, feeders, a finesand mixing barrel, a filter, motors, stirring rods, a storage device and a controller, wherein a first motor is fixed at the bottom of the pre-mixing sand barrel, a first feeder, a second feeder anda third feeder are sequentially arranged above the conveying belt from left to right, the fine sand mixing barrel is arranged below the right part of the conveying belt, and a second motor and a thirdmotor are fixed at the bottom of the fine sand mixing barrel. According to the novel rotor type sand mixing machine, the pre-mixing sand barrel and the fine sand mixing barrel are arranged, so that the double mixing effect is realized, and the sand mixing effect is improved; the stirring blades on a second stirring rod and a third stirring rod are close to the bottom of the fine sand mixing barrel and are in a staggered arrangement and partially overlap, so that sand mixing dead corners are avoided, and sand at the bottom of the sand mixing barrel is prevented from caking; the filter is arranged, the large sand material can be removed, and the quality of the mixed sand is ensured, and the design is reasonable, the sand mixing method is simple, and the production line is convenient to use.

Description

technical field [0001] The invention relates to the technical field of sand mixers, in particular to a novel rotor type sand mixer and a sand mixing method. Background technique [0002] The sand mixer is a kind of equipment used in sand casting. The function of the sand mixer is to stir the new and old sand, binder, bentonite, curing agent and other auxiliary materials entering the barrel of the sand mixer, so that the surface of the sand particles is uniform. coated with bentonite film. Within a certain mixing time, the sand mixer mixes the molding sand that meets the process requirements; at the same time, the mixed molding sand is loose and does not agglomerate, so as to meet the needs of casting molding. [0003] With the development of modern molding technology, the demand for molding sand is increasing, which puts forward higher and higher requirements for the equipment for mixing molding sand. As early as before the 1980s, the sand mixer mainly used the roller type...

AI Technical Summary

Problems solved by technology

The existing sand mixer is prone to sand accumulation, sand sticking, etc., and there is a dead angle of sand mixing. The sand block with a long time of sand accumulation becomes hard and difficult to be crushed again. Once it falls off and mixes with the molding sand, it often results in casting waste.

Images