Muffle furnace, sealed cap and tool for operating sealed cap thereof

Abstract

The invention relates to a muffle furnace, a sealed cap and a tool for operating sealed cap thereof. The sealed cap of the muffle furnace comprises a sealed cap body, and a temperature-measuring opening which is communicated with the outside world formed on the sealed cap body. The temperature-measuring opening is capable of opening a first dam-board and a second dam-board in a sliding mode respectively, wherein the first dam-board is covered with transparency, the second dam-board is used for blocking the volatile matter of heating elements, and the second dam-board is attached to the first dam-board. The sealed cap of the muffle furnace has a first work position and a second work position, in the first work position, both the first dam-board and the second dam-board cover the temperature-measuring opening, in the second work position, the second dam-board removes the temperature-measuring opening, then the temperature measurer is capable of measuring the temperature inside the muffle furnace through the first dam-board. Through the above technical scheme, the sealed cap is not only capable of detecting the temperature inside the muffle furnace and the service condition of the heating elements in real time, but also avoiding the influence from the heating elements in the muffle furnace and the volatile substance produced by silicon carbide rods on the observation of the situations inside the furnace, and then largely improving work efficiency.

Description

technical field [0001] The present disclosure relates to the field of glass substrate production, in particular, to a muffle furnace, its sealing cover, and a tool for operating the sealing cover. Background technique [0002] In the production process of glass substrates, after the ingredients are liquefied by heating in the kiln and filtered and clarified, the molten glass flows into the forming equipment to overflow and pull down to make products. Among them, the muffle furnace is an important molding equipment. There are overflow bricks in the muffle furnace, and silicon carbide rods for heating the overflow bricks are arranged around the overflow bricks. In order to maintain the state of the glass liquid in the muffle furnace, strict Control the temperature and usage status of silicon carbide rods. In the related art, the muffle furnace is detachably provided with a sealing cover for closing the muffle furnace. By removing the sealing cover to detect the silicon carbid...

AI Technical Summary

Problems solved by technology

In the related art, the muffle furnace is detachably provided with a sealing cover for closing the muffle furnace. By removing the sealing cover to detect the silicon carbide rods in the furnace, the heat of the silicon carbide rods in the muffle furnace will be caused. Loss and temperature field fluctuations in the muffle furnace affect the production of glass substrates

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