Framework dewaxing and wax-melting purifying device and framework dewaxing and wax-melting purifying method

Abstract

The invention discloses a framework dewaxing and wax-melting purifying device. The framework dewaxing and wax-melting purifying device consists of a dewaxing device and a filter device, wherein the dewaxing device comprises an electric heating dewaxing furnace, a gasholder, a pipe network system and a monitoring and controlling system; the two ends of the pipe network system are respectively communicated with the electric heating dewaxing furnace and the gasholder; an air supply line, a decompression air return line and an air supplementing line for supplementing air into the gasholder are formed by a booster pump, a high-pressure air delivery pipe and multiple solenoid electric valves mounted on the high-pressure air delivery pipe; and the filter device is provided with a stirring paddle, a filter inner cylinder and a filter outer cylinder and communicated with a wax slurry dump pump. In match with a framework dewaxing and wax-melting purifying method, the device has the characteristics of being simple and convenient to operate, reliable in performance, long in service life, high in degree of automation, good in dewaxing purifying effect and low in energy consumption, and the like.

Description

technical field [0001] The invention relates to the technical field of precision casting, in particular to a mold shell dewaxing and melting wax purification device and a dewaxing purification method used in the production process of high-pressure valve body blanks. Background technique [0002] High-pressure valves are widely used, and the performance and quality requirements are getting higher and higher. The shape of the valve body is relatively complex, and it requires good airtight performance. Therefore, its blanks are usually produced by precision casting. In the precision casting process, mold shell dewaxing is a very important process, which is directly related to the quality, yield and production efficiency of the mold shell. At present, most of the dewaxing of the mold shell uses a steam dewaxing kettle or an electric dewaxing kettle. The steam dewaxing kettle is mainly used to feed high-pressure and high-temperature steam into the kettle to quickly melt the wax i...

AI Technical Summary

Problems solved by technology

The defects of the former are: 1) The pressure and temperature in the kettle are not synchronized, the temperature rises and melts first, and the pressure is delayed, which will easily lead to the rupture of the mold shell and reduce the yield of the mold shell; 2) After the mold shell is dewaxed in each furnace, all the steam in the kettle Lost, the lower furnace re-introduces high-pressure and high-temperature steam, resulting in waste of energy, large consumption and high cost

The latter is the same as the former except that it consumes more energy

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