To solve the problems of opening blockage and high water-head loss in drip irrigation system,some kinds of open filters are developed,which have different cross sections,such as box type,cylindrical-type and prism-type.

An Experimental Study on the Pressure Characteristics of the Bag Filters at Initial Filter Stage

This paper analyzed the abnormal phenomena related to the increased pressure drop of bag filter,high pressure drop between inlet and outlet of conveying fan and overhigh electric current in the newly built powder conveying system of a high density polyethylene plant.

The paper introduces the structure,operation principle,characters and experimental results of the bag filter.

Matters needing attention for the operation of tubular filter and resin column;

The theoretical spacing of tubular filter elements is predicted from firest priciples using flat model and more exact analysis taking into account the tube curvature.

At last,the paper introduces the application effect of using the drum filter equipment adopted a multifunctional filters to eliminate coal-dust stained yarn in the cotton mill.

Comparative experimental study of process performance of disc filters;

The technological process of white water treatment system for a BF-12 high speed tissue paper machine was introduced,mainly introducing working principles and brief operation of the main equipment,such as air floating chest,disc filter and belt pressure filter.