Crucible overturning device and vacuum induction furnace using same

Abstract

The invention relates to a crucible overturning device, which comprises a transmission shaft. The transmission shaft is rotatably assembled on the corresponding body of the vacuum induction furnace in an air sealing mode during use, one end of the transmission shaft is provided with a power output end which extends into the corresponding furnace body, and the other end of the transmission shaft is provided with a power input end which extends out of the corresponding furnace body. The crucible overturning device also comprises a hydraulic cylinder which is in transmission connection with the power input end of the transmission shaft through an external transmission mechanism so as to drive the transmission shaft to rotate around the rotating axis of the hydraulic cylinder in a reciprocating manner, and the power input end of the transmission shaft is provided with a connecting section which is used for being directly fixedly connected with the corresponding crucible overturning rack or connected with the corresponding crucible overturning rack through an internal transmission mechanism so as to drive the crucible overturning rack to overturn. The hydraulic cylinder is arranged outside the vacuum induction furnace, so that the heated area of the hydraulic cylinder is greatly reduced, sealing parts in the hydraulic cylinder are not easily damaged, the product quality of molten iron cannot be affected by leakage of hydraulic oil, and the hydraulic cylinder can be repaired quite conveniently.

Description

technical field [0001] The invention relates to vacuum smelting equipment, in particular to a crucible turning device and a vacuum induction furnace using the turning device. Background technique [0002] my country's rare earth production accounts for more than 97% of the world's total, and rare earth processing has unique conditions in our country. Vacuum induction furnace stone is an important equipment for rare earth refining. The turning mechanism currently used in vacuum induction quenching furnaces is as follows: figure 1 As shown: the hydraulic cylinder 5 is directly installed on the crucible turning frame 1, because both the crucible 2 and the crucible turning frame 1 are installed in the vacuum furnace body, so the hydraulic cylinder 5 and the corresponding hydraulic pipelines are directly installed on the Inside the vacuum furnace. When the crucible 2 is pouring molten steel, the hydraulic cylinder 5 is used to directly lift the crucible turning frame 1, relying...

AI Technical Summary

Problems solved by technology

The 1600°C high-temperature molten iron in the crucible easily radiates heat to the hydraulic cylinder, causing the hydraulic cylinder to be heated, and the seals in the hydraulic cylinder are easily damaged and destroyed, resulting in leakage of the hydraulic cylinder and affecting the service life and quality of the hydraulic cylinder.

[0004] 2. The hydraulic cylinder is directly installed in the vacuum box and works at high temperature. The leaked hydraulic oil is easy to gasify and affect the product quality.

[0005] 3. The installation of the hydraulic cylinder in the vacuum box must be repaired after the furnace is shut down, which is inconvenient to repair and affects its service life

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