Interpolation equipment of the tackifying resin production polycondensation in -process additive

The utility model discloses an interpolation equipment of the tackifying resin production polycondensation in -process additive, it is installed in the feed hopper at dropwise add funnel top including installing in the dropwise add funnel at reation kettle top, feed hopper installs the lower part ball valve no. 1, ball valve no. 2 is installed to dropwise add funnel lower part, dropwise add funnel top is sealed, reation kettle with install the constant voltage connecting pipe between the dropwise add funnel upper portion position, ball valve no. 3 is installed to the constant voltage connecting pipe, the utility model discloses it is in guaranteeing isolated air and reation kettle under the prerequisite of negative pressure, can the constant speed stable to wherein adding the additive.