The system can be divided into two types: split type and oven type. The split type can clean four 6-liter or 15-liter Sumar tanks at the same time, and the integrated type can clean four 6-liter or 2-15-liter Suma tanks at the same time. The system has built-in vacuum vortex pump to replace the general primary vacuum pump and advanced vacuum pump, so that the instrument volume is smaller, the true space can be less than 50 mtorrl, and the no-load flow rate can reach 100 L / min, The heating power of each DC heating belt is 250 watts; the oven type heating power is 1000 watts, which is fast and efficient. All pipe joints of the system are made of 316L stainless steel or polytetrafluoroethylene, and special treatment is carried out to effectively reduce adsorption; the system is controlled by microcomputer, and the whole cleaning process is completed automatically, and there is a buzzer after cleaning, It is convenient for users to use. The system uses high precision absolute pressure sensor and vacuum sensor to monitor the internal pressure of sampling tank, which is more accurate and reliable, and ensures the purification effect