Tar flow control device

The utility model relates to a tar flow control device for monitoring and controlling tar flow, belonging to the technical field of liquid flow control equipment. The tar flow control device adopts the following technical scheme: the tar flow control device consists of an operating and relay board, a tar metering control instrument, a tar control valve, a weighing sensor, a flexible connecting part, a tar barrel and a tar draining valve, wherein the tar barrel is connected with the weighing sensor through the flexible connecting part, a signal output end of the weighing sensor is connected with the tar metering control instrument, a tar tank is connected to a tar inlet of the tar barrel through a tar conveying pipeline and the tar control valve, a tar outlet of the tar barrel is connected with a malaxator through a tar conveying pipeline and the tar draining valve, the control ends of the tar control valve and the tar draining valve are respectively connected with a relay on the operating and relay board, and