This equipment for intermittent vacuum concentration, the machine body, heating coil, separator, hydraulic injector, multi-stage pump, etc. Suitable for thermal sensitivity material (such as milk, fruit and vegetable juice, and medicine, etc.) in a vacuum under the conditions of low temperature concentration. Has small volume, simple structure, easy to operation, cleaning, maintenance, etc. Every part contacting materials adopts stainless steel materials. The vacuum system vacuum pump and condenser type combination may be adopted.