Reation kettle prevents head of smouldering

The utility model discloses a reation kettle prevents head of smouldering, personally experiencing sth. Part of the body and installing the head in cauldron body top including the cauldron, the upperportion of head covers and is connected with the protecting clap cover, and the protecting clap cover is provided with hollow heat insulating laminated, and heat insulating laminated inside sets up tothe vacuum state, and protecting clap puts in and offers the vacuum tube that is used for extracting the air. Avoided reation kettle leaks outer heat preservation when adding the material on, prevented that the material from causing the circumstances that the reation kettle heat preservation smouldered because of outside coil heating on the heat preservation. The utility model discloses simple structure plays the effect of protection heat preservation, avoids the wall to take place smoldering or conflagration, improves the security. 本实用新型公开了种反应釜防闷烧封头，包括釜体以及安装在釜体上方的封头，封头的上部覆盖连接有保护夹套，保护夹套设置有中空的隔热夹层，隔热夹层内部设置为真空状态，保护夹套上开设