The utility model relates to a treatment free cleaning system, which solves the problems of water output and pressure of washing.The system includes a water tank with an inlet set at a relatively high position on the water tank, an outlet set at a relatively low position on the water inlet, a sewage outlet set at a slightly lower position on the water inlet, and a motor connected between the water tank and a washer by a pipeline.As mentioned above, the water in the water tank can be pumped out by the motor, which can provide the flushing liquid with constant water output and pressure, and solve many defects caused by the known unsteadiness of pressure.In addition, the air pressure inside and outside of the water tank of the cleaning system can not only prevent siphonage, but also reduce the burden of water pressure on the water tank, thus extending the service life of the water tank.一種免治洗淨系統，係為解決沖洗出水量及壓力等問題。該系統包括：一水箱，具有一進水口，設於水箱上的一相對較高的位置；一出水口，相對於進水口設於一較低的位置；一汙水出口，設於較進水口略低的一位置；一馬達，以一管路連設於水箱及一沖洗器之間。如上述的免治洗淨系統，藉由馬達將水箱中的水抽出，可以提供具有恆定出水量及壓力的沖洗液，解決了既知免治洗淨系統因壓力不恆定所衍生的諸多缺失。另外，該免治洗淨系統，其水箱內外維持大氣壓力，不但可防止虹吸現象，並且能降低水壓對水箱的負擔，從而延長水箱的使用壽命。
