Device and method for pneumatic desanding and sand regeneration of castings

Abstract

The invention provides a device and a method for pneumatically removing sands from a casting and recovering sands. A furnace body of a sand removing furnace is divided into a boiling pressure room and a fluidized bed room by a closed partition board, a plurality of high-temperature hot air nozzles are arranged in the fluidized bed room and are connected to a combustion room outside the furnace body, and the combustion room is further connected with a combustion air pipe and a first high-pressure fan; the boiling chamber room is communicated with a second high-pressure fan, and a plurality of air nozzles are arranged on the closed partition board towards the fluidized bed room; an air cooling room is provided with a closed plate with a plurality of blowing nozzles, the closed plate is used for dividing the air cooling room into a lower air pressure room and an upper grading room, the air pressure room is connected with a third high-pressure fan, the side wall of the grading room is provided with a door and is communicated to a sand outlet, the grading room is communicated with the fluidized bed room, and the top of the grading room is provided with a door and is connected with a dust remover through a dust removing pipeline. According to the device and the method for pneumatically removing the sands from the casting and recovering the sands, the working processes of shaking out the sands, removing the sands and recovering the used sands can be carried out in a centralized manner.

Description

technical field [0001] The invention relates to a device for intensively performing sand removal, core removal, old sand heat regeneration casting fluid state desanding furnace and fluidized desanding method on castings, which can be typically applied to automobile engine parts. Cast iron, vermicular iron and aluminum alloy cylinder blocks and cylinder heads by core assembly (precision molding) process, green mold sand molding and metal mold low-pressure process cast iron and aluminum alloy cylinder blocks and cylinder heads shakeout, core removal and old sand regeneration Waiting for the process. Background technique [0002] At present, the traditional sand mold (including core assembly) casting process is to separately carry out the steps of shakeout, core removal and old sand regeneration after the molten metal is poured into the sand mold and then cooled, among which: [0003] Shakeout - to separate the casting from the molding sand and core sand as much as possible fo...

AI Technical Summary

Problems solved by technology

Therefore, there are many equipment, large workshop area, large power consumption, large waste discharge, many personnel, and poor working environment.

In short, the production investment is large and the operating cost is high, which leads to an increase in the production cost of castings and damages the human and natural environment.

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