Centrifugal belt-type sand spreader

Abstract

The invention relates to the technical field of sand covering for wax patterns, and particularly relates to a centrifugal belt-type sand spreader. The centrifugal belt-type sand spreader comprises a sand receiving box, wherein the top of the sand receiving box is open; a belt conveyor is arranged at the left side and the right side of the top of the sand receiving box separately; each belt conveyor extends slantwise and upwards to reach the top of the sand receiving box from the two sides; an elevator is arranged at the bottom of the sand receiving box; an unloading hopper is arranged at the top of the elevator; an inclined and downward sand falling channel is connected from the bottom of the unloading hopper to the left side and the right side separately; and an outlet of each sand falling channel is suspended above the corresponding belt conveyor. The belt conveyors spread sand to the space above the sand receiving box, and then the sand hits a wax pattern on a wax pattern line on the sand receiving box at a certain speed, so that rapid sand covering is carried out; and meanwhile, dust generated by the centrifugal belt-type sand spreader is less, so that the production environment of a workshop is improved.

Description

technical field [0001] The invention relates to the technical field of wax mold sand coating, in particular to a belt centrifugal sand spreader. Background technique [0002] Wax pattern casting, including the sand covering process, that is, the wax pattern is covered with molding sand, and the sand shell is formed after drying, which is the mold for casting; the sand covering in the prior art adopts the sand pouring process or the drum sand process , that is, the molding sand falls on the wax pattern from above, or the blower blows the molding sand in the container to make it turn over, so as to cover the passing wax pattern with sand; these two methods will generate a lot of dust, which will seriously pollute the workshop environment and give The health of workers will be harmed. At the same time, in both methods, the molding sand falls freely onto the wax model, so the compactness and efficiency of the sand covering are not high, and multi-layer sand covering is often req...

AI Technical Summary

Problems solved by technology

[0002] Wax pattern casting, including the sand covering process, that is, the wax pattern is covered with molding sand, and the sand shell is formed after drying, which is the mold for casting; the sand covering in the prior art adopts the sand pouring process or the drum sand process , that is, the molding sand falls on the wax pattern from above, or the blower blows the molding sand in the container to make it turn over, so as to cover the passing wax pattern with sand; these two methods will generate a lot of dust, which will seriously pollute the workshop environment and give The health of workers will be harmed. At the same time, in both methods, the molding sand falls freely onto the wax model, so the compactness and efficiency of the sand covering are not high. Multi-layer sand covering is often required, and the formed sand shell is also very thick.

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