Quantitive feeding device of liquid materials of reaction kettle

The utility model discloses a quantitive feeding device of liquid materials of a reaction kettle, and solves the problem that in the prior art, when materials are needed to add in the process to the reaction kettle, the manhole is necessary to be opened, so that sealing performance of the manhole is poor, and even leakage is easy. The device provided by the utility model comprises the reaction kettle with the manhole and a feeding device arranged on the reaction kettle. The feeding device comprises a storage tank, a feeding port arranged at the upper end of the storage tank, and a conveying pipe arranged at the bottom of the storage tank and communicated with the reaction kettle. The storage tank is made of a transparent material. Scales are arranged on the outer wall of the storage tank. A drawing plate which is moveably connected with the conveying pipe and used for controlling feed is arranged at the upper end of the conveying pipe. The device provided by the utility model prevents trouble of opening the m