Water supply and discharge equipment

Abstract

The invention relates to a rinse water dispensing device that can reduce the user's operating procedures while ensuring that the detergent is mixed into the rinse water. This wastewater supply device includes: a wastewater tank 18, its inner part 20 which contains wastewater 30; a container 47 to hold detergent 51; a supply line 54 to mix detergent 51 inside the wastewater 30; and a shut-off valve 48 with valve details 56, which is located in the inner part 20 to open and close the supply line 54. When the water level of the wastewater 30 is lowered to cause valve details 56 to operate, the supply line 54 is opened; And when the water level of pipe 30 rises to make valve 56 work, supply line 54 is closed.