Vacuum collection device for multi-disc filter

The utility model relates to a vacuum collection device for a multi-disc filter. The device is characterized in that filtrate tanks are additionally arranged at the tail ends of clear and cloudy filtrate outlet pipelines of the multi-disc filter. According to the vacuum collection device for the multi-disc filter, the filtrate tanks of which the volumes are far smaller than those of filtrate receivers are additionally arranged at the tail ends of the clear and cloudy filtrate outlet pipelines of the multi-disc filter, can be filled with liquid more easily than the filtrate receivers, and have a certain sealing function in outlets of clear and cloudy filtrate pipes, so that the influence of liquid levels in the clear and cloudy filtrate tanks on vacuum in a dehydration process is avoided, and particularly during starting, the liquid levels in the clear and cloudy filtrate tanks are only required to meet the circulation requirements of water, and the influence of the liquid levels on the vacuum is not required