Water/medicine on-line proportioning device of spray deodorizer

The utility model discloses a water/medicine on-line proportioning device of a spray deodorizer. The water/medicine on-line proportioning device comprises a dosing tank, a dosing pump, a pulse metering valve and a driver, the dosing box is used for containing medicaments; the inlet end of the dosing pump is communicated to the dosing tank; the inlet end of the pulse metering valve is communicated with a tap water source; the driver is electrically connected with the dosing pump and the pulse metering valve and used for counting the number of pulses generated by water flowing out of the pulse metering valve, and when the number of the pulses reaches a set value, the dosing pump is started to add a set dosage of chemicals. The pulse metering valve is used for carrying out pulse counting on water quantity, the driver controls the dosing pump to add medicaments when the pulse quantity reaches a set value, real-time online water/medicament proportioning is realized, only one dosing box with relatively small volume