The sulfur hexafluoride recovery and purification unit adopts the design principle of freezing liquefaction method, which reduces the working pressure of the system and greatly improves the recovery efficiency. The refrigeration compressor can be equipped with imported fully enclosed refrigeration compressor. The gas recovery unit adopts a double container system. SF6 can be liquefied and can be used to fill steel cylinders with a filling capacity of no less than 50kg. The filling volume of the recovery device of the single container shall not be less than 30kg.

The double container system for sulfur hexafluoride recovery and purification has an innovative SF6 vaporization method. It uses high temperature and high pressure SF6 gas to force low temperature and low pressure SF6 liquid to fill the steel cylinder, which takes short time and has a large filling volume. The column type liquid level gauge used has direct and accurate SF6 level indication. The liquid storage container is equipped with a high-power SF6 vaporization electric heater. When in use, it automatically controls the temperature so that SF6 can be fully vaporized and inflated externally.

The oil mist filtering system used in the Filier sulfur hexafluoride recovery and purification unit can ensure that the oil content reaches the standard. The compressor lubricating oil shall not be added within one year, and the oil level shall not drop. The molecular sieve drying system has reliable performance. The molecular sieve does not need to be disassembled, disassembled and replaced during regeneration. It is convenient to use. Only the molecular sieve dryer needs to be self regenerated, and the drying performance can be restored as before.

At the same time, sulfur hexafluoride recovery and purification device can be customized phase sequence protection device, with withstand voltage up to 500V, greatly improving reliability. The three-phase power supply is adopted, and the neutral line is not necessary. The whole machine is equipped with a leakage protector. The flow chart is drawn on the panel, which is convenient and intuitive to operate. Ball valves are all used, and the opening and closing states are clear.

In addition, the sulfur hexafluoride gas recovery inflation device uses high-quality casters, which is easy to move and does not harm the ground.