Old sand regenerator

Abstract

The invention provides an old sand regenerator, and particularly relates to a mechanical old sand regenerator. According to the old sand regenerator, membranes on the surfaces of sand can be evenly and rapidly smashed, the smashing intensity is easy to control, and sand bodies with different qualities are conveniently produced. The old sand regenerator comprises a rack, a barrel and a rotation driving device, the barrel is fixed to the rack, a roller is arranged in the barrel coaxially, and many rings of hitting plates are arranged on the roller; each ring of hitting plate is a plate body distributed in the circumferential direction of the roller, many rings of collision plates corresponding to the hitting plates on the roller are arranged in the barrel, and the position, between two rings of collision plates, of the barrel is provided with a ring of sand flow guide plate; a rotating shaft is arranged on the roller and connected with the rotating driving device. By means of the old sand regenerator, the sand is relatively uniform even though collision occurs, and the efficiency is higher. By controlling the rotating speed of the roller, the smashing intensity of the sand can be controlled, and the sane in different sizes can be obtained.

Description

technical field [0001] The invention belongs to an old sand recycling machine, in particular to a mechanical old sand recycling machine. Background technique [0002] The massive discharge of foundry used sand not only causes waste of foundry resources, but also causes great pollution to the environment. The recycling of used sand has become an urgent problem to be solved in the foundry industry. Old sand regeneration is a kind of casting in which the old sand is physically, chemically or heated to remove residues such as binders and inert films accumulated on the sand grains, as well as harmful particles and dust, so as to restore the various technological properties of the old sand. The ultimate goal of the process is to reduce the amount of new sand used in foundry production, save economic investment, improve the quality of castings, and protect the natural environment. Therefore, in terms of improving the quality of castings, the promotion and use of old sand recycling...

AI Technical Summary

Problems solved by technology

Among them, the mechanical physical crushing method is the most environmentally friendly, but the existing recycling method of the recycling machine is to accelerate the sand to a certain speed and then hit the object, so that the film on the surface of the sand is broken and falls off, but this kind of machine makes the speed of the sand It is difficult to control. If it is too fast, it will easily break the sand particles. If it is too slow, it will be uneven and the regeneration rate will be reduced. In addition, it is necessary to flexibly control the impact force of the sand according to the strength of the residual film on the surface of the sand in different processes.

Images