Patent ID: 9387519
Filing Date: 2016-07-12
CPC Classification: B01D,B08B,B22F,C10G

Claim Text:
1. A dewaxing device of utilizing chemical solvent to dewax a green part of product formed by metal injection molding, comprising: a dewaxing system for dewaxing the green part of product, the dewaxing system including a rinsing device where the green part of product is placed and a storage device where the chemical solvent is stored, the storage device being connected with the rinsing device via a circulation pipe for utilizing the chemical solvent to soak and rinse the green part of product; and a recycling system including a containing trough which is connected with the storage device for containing mixed solution with wax from the storage device, and a recycling trough which is connected between the containing trough and the storage device for containing and conveying pure chemical solvent from the containing trough back into the storage device to be reused, the recycling system further including a rotating device, a condensing unit and a heating unit which cooperate to treat the mixed solution with wax into the pure chemical solvent in the containing trough, the rotating device being rotatably mounted above the containing trough with the bottom half thereof being dived into the mixed solution, the condensing unit and the heating unit being disposed at two opposite sides of the top half of the rotating device, the rotating device being rotated towards the condensing unit; wherein the rotating device includes a hollow shaft and a plurality of blades radially extending outward around outer periphery of the shaft and arranged at regular intervals on generatrices of the shaft, in use, the blades are firstly cooled by the condensing unit to be rotated into the mixed solution for locally cooling the mixed solution to make wax precipitated out of the cooled mixed solution and adhered on the cooled blades, the blades together with the precipitated wax are further rotated out of the mixed solution to be heated by the heating unit for melting the precipitated wax into liquid, then the liquid wax flows into the hollow shaft along the blades by virtue of its own gravity with the upward rotation of the rotating device.