Liquid dosing bottle

A liquid dosing bottle, comprising a bottle body, a bottle cap, and an air conduit, wherein the air conduit is arranged in an inner cavity of the bottle body, and a lower end of the air conduit is positioned near a bottom surface of the inner cavity of the bottle body;

• the bottle cap comprises a dosing chamber, a siphon, and an air vent, a bottom plate of the dosing chamber is provided with a liquid inlet hole that is communicated with the dosing chamber and the inner cavity of the bottle body, a top plate of the dosing chamber is provided with a liquid outlet;
• the siphon is arranged in the dosing chamber, and comprises a liquid inlet tube, a liquid outlet tube, and a connecting portion of the liquid inlet tube and the liquid outlet tube, an upper end of the liquid outlet tube is connected to the liquid outlet, a liquid inlet end of the liquid inlet tube is positioned near the top plate of the dosing chamber;
• the connecting portion near the bottom plate of the dosing chamber comprises a vent tube, and the vent tube is connected to an upper end of the air conduit;
• and an upper end of the air vent is communicated with atmosphere, and a lower end of the air vent is positioned at a lower part of the dosing chamber.