A multifunctional casting loose sand furnace

Abstract

The invention provides a multifunctional foundry sand loosening furnace. The multifunctional foundry sand loosening furnace comprises a vertical reaction kettle, a pressure control device and a heating temperature control display device; the vertical reaction kettle comprises a barrel, a lower seal head, an end cover and a reflux condenser; a connecting pipe is connected between the reflux condenser and the barrel; a water inlet pipe is mounted on the reflux condenser; the vertical reaction kettle comprises an inner cavity, a middle layer and an outer layer, all of which are arranged from inside to outside; a working fluid and a casting are arranged in the inner cavity; a heat-conducting oil is held in the middle layer; the outer layer is a thermal insulating layer; the pressure control device comprises a pressure sensor, a pressure controller, a relay and an electromagnetic valve; the pressure sensor is mounted on the connecting pipe; the electromagnetic valve is mounted on the water inlet pipe; the pressure sensor, the pressure controller, the relay and the electromagnetic valve are orderly and electrically connected together. The multifunctional foundry sand loosening furnace is capable of automatically clearing the sand shakeout and the reactants in the working fluid, increasing the utilization rate and the sand loosening speed of a sand loosening agent, guaranteeing the use safety of the sand loosening furnace and reducing the labor intensity of a worker.

Description

technical field [0001] The invention relates to residual sand cleaning equipment for investment casting, which is suitable for cleaning residual sand shells on the casting surface of investment casting. Background technique [0002] In the investment casting industry, the cleaning of residual casting sand on the surface of castings is a difficult problem for the entire industry. The traditional sand cleaning process is to soak the casting with residual sand in high concentration hydrofluoric acid or quench it in molten caustic soda. Because these two methods have defects such as polluting the environment, endangering workers' health, and corroding castings, they have seriously restricted the survival and development of the investment casting industry. Completely replace the traditional craft. [0003] The emergence and application of foundry sand loosening furnace makes casting sand cleaning safe, simple and environmentally friendly. It reduces the harm to workers' health...

AI Technical Summary

Problems solved by technology

[0005] 1. Because there is no filter device in the existing sand loosening furnace, it is impossible to remove the falling residual sand and the reactant between the residual sand and sand loosening chemicals from the working fluid, which reduces the utilization rate and service life of the working fluid

[0006] 2. The existing sand loosening furnace does not have a pressure control device, which cannot guarantee the safe operation and continuous operation of the sand loosening furnace

[0007] 3. The existing sand loosening furnace does not have a temperature control device, which cannot achieve the purpose of saving energy and reducing consumption

[0008] 4. The existing sand loosening furnace does not have an automatic entry and exit device for castings, which cannot reduce the labor intensity of workers and improve production efficiency

[0009] 5. The existing sand loosening furnace is not equipped with special rinsing facilities, and it is impossible to clean the sand loosening chemical substances remaining on the casting surface

[0010] 6. The existing loose sand furnace is not equipped with complete end cover opening and closing facilities, which cannot make the end cover open and close automatically, quickly and labor-saving

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