Flow-controllable dosing device

The invention belongs to the technical field of deicing, unblocking and anti-freezing equipment for gas pipelines, and discloses a flow-controllable dosing device. Comprising a dosing cylinder, a liquid level meter, a dosing regulating valve and a communicating pipe, the bottom of the dosing cylinder is connected with the union B. The bottom of the union B is connected with the tee joint A. The bottom of the tee joint A is connected with the dosing adjusting valve. The side face of the tee joint A is connected with the blow-down valve. The liquid level meter is installed on the side face of the dosing cylinder and vertically communicated with the dosing cylinder. The top end of the dosing cylinder is connected with one end of the communicating pipe. The other end of the communicating pipe is connected with a tee joint B arranged at the bottom of the medicine adding adjusting valve, and the upper end of the medicine supplementing valve is connected with a medicine adding funnel. The liquid level can be visible