Improvements in or relating to Means for Cleansing the Filtering Media of Filtering Apparatus wherein Air is Introduced with the Cleansing Liquid.

摘要

16,901. Wilson, J. Dec. 1. Filters with horizontal filtering-layers; filters, cleansing.-In filters cleansed by a reverse flow of liquid and air, perforated air chambers or covers b are fitted over the inlet pipes a for the cleansing agents, in order to trap the air as it separates from the water and, by means of the perforations d, to distribute the air evenly throughout the filtering-medium. In the form of cover shown in Fig. 1, the water escapes around the edges e1 of the cover. In the form shown in Fig. 4, the water escapes through the lower perforations e.