Beverage mixing machine venture tube inhaling carbon dioxide system

The utility model relates to a Venturi tube CO2 intake system for the beverage mixer, which is used to mix in the CO2 into the liquid and is characterized in that the system comprises a primary CO2 mixer (2), a secondary CO2 mixer (7), a water inlet pipe (1), a mixed-up syrup tube (3), a primary carbonic acid pipeline (5), a secondary carbonic acid pipeline (6) and a CO2 air inlet tube (4), wherein both the primary CO2 mixer (2) and the secondary CO2 mixer (7) adopt the Venturi tube; the water inlet pipe (1) and the primary carbonic acid pipeline (5) are respectively connected with the water inlet (2.1) and the CO2 inlet (2.2) of the Venturi tube; the mixed-up syrup tube (3) and the secondary carbonic acid pipeline (6) are respectively connected with the syrup inlet (7.1) and the CO2 inlet (7.2) of the Venturi tube; and both the primary carbonic acid pipeline (5) and the secondary carbonic acid pipeline (6) are connected with the CO2 air inlet tube (4). Water is prayed out at a high speed from the nozzle of t