德耐尔干式螺杆真空泵DSV1200

·  进气端
·  Air intake end
唇形密封+活塞环密封
Lip seal + piston ring seal
·  排气端
·  Exhaust end
唇形密封+迷宫式密封，构成组合密封型式。辅以氮气吹扫，形成密封气腔，提高了齿轮箱和被抽气体之间的密封稳定性。
Lip seal + labyrinth seal constitutes a combined seal type. Nitrogen purging is used to form a sealed air cavity, which improves the sealing stability between the gearbox and the pumped gas.
目前很多螺杆真空泵均采用机械密封，且内部不均匀压缩，多年的应用表明，其机械密封容易过热损坏，尤其是在处理一些腐蚀性介质工况下更容易损坏，导致螺杆泵存在易损件其维修保养相对频繁，而且价格昂贵
At present, many screw vacuum pumps are mechanical seals, and the internal uneven compression, years of application have shown that the mechanical seals are easy to overheat and damage, especially in the treatment of some corrosive media under the working conditions are more likely to be damaged, resulting in the existence of wearing parts of the screw pump, its maintenance is relatively frequent, and the price is expensive