Anti-lost water agent dosing tank device and dosing method

The invention discloses an anti-lost water agent dosing tank device and a dosing method. When a heat supply network water mixing unit loses a large amount of water, a water loss point cannot be found in time, an odorizor needs to be manually put in a place with a large water loss amount, and the purposes of quickly smelling odor and finding leakage are achieved. The lowest outdoor temperature in the severe cold period of the root river downtown reaches-58 DEG C, and the difficulty of finding a water loss point outdoors is seriously increased. The device comprises a chemical feeding pipe (2), the chemical feeding pipe is connected to a chemical feeding tank (5), an outlet of the chemical feeding tank is communicated with a chemical feeding pipe (7), and the chemical feeding pipe is connected to a chemical feeding hole (8) of a heat supply pipeline; and a dosing pump (1) is mounted on the dosing pipe. According to the anti-lost water agent dosing tank device, an inlet valve (3) is mounted at an inlet of the dos