Self-adaptive vacuum system

The invention relates to a self-adaptive vacuum system, and belongs to the technical field of vacuum distillation. Through combination of the vacuum demand system, the condensation system, the vacuum system and the tail gas treatment device, substances with boiling points higher than a target boiling point can be separated through the condensation system and prevented from entering the first pump; and dispersion and secondary gasification of substances with the boiling point lower than the target boiling point can be achieved through combined operation of the vacuum oil pump and the second pump, the internal pressure intensity of the vacuum demand system, the condensation system and the vacuum system can be kept stable, and the service life of the first pump can be greatly prolonged. 本发明涉及一种自适应的真空系统，属于真空蒸馏技术领域。本发明设置真空需求系统、冷凝系统、真空系统和尾气处理装置的组合，既能够通过冷凝系统将沸点高于目标沸点的物质分离并防止其进入第一泵，又能够通过真空油泵与第二泵的联合运作设置实现低于目标沸点的物质的分散和二次气化，不仅能够保持真空需求系统、冷凝系统、真空系统的内部压强稳定，而且还能大大延长了第一泵的使用寿命。