How to select liquid filter bag and the material of liquid filter bag

- Dec 28, 2018-

How to select liquid filter bag and the material of liquid filter bag 



Liquid filter bag, this is a specific type of filter bag, and from the current point of view, this kind of filter bag is more application, so, it is necessary to be familiar with and understand, so as to know what it is and how to use properly, and then, can have good performance and effect.



1. Selection of liquid filtration bag


The selection of liquid filter bag, from a professional view, can be started from different aspects, the detail is:



Aspect 1: consider filtration requirements, such as what particle impurities are required to be removed, the particle size, and whether to remove suspended substances in the liquid, as well as the particle size of suspended substances.


Aspect 2: filter temperature and pressure requirements, it is possible to calculate the size of the filter bag, the max. flow rate and the size of the initial pressure drop. In addition, after knowing the impurity content in the fluid, whether the service life of the liquid filter bag can be estimated.


Aspect 3: the selection of filter material shall consider and evaluate the operating temperature, operating pressure, acid-base value, operating conditions, etc. one by one, and remove the inappropriate filter material.


Aspect 4: how the filter bag is used, whether the filter bag is used in conjunction with the filter, and whether the filter is used for continuous or intermittent filtering.



2. Properties of liquid filter bags and usable materials


Liquid filter bag, which is a kind of filter element, is an important part in the filtration operation, its quality will affect the quality and filtering effect. Under normal circumstances, the filter bag filtrate will be filtered out to conduct singeing treatment, to effectively avoid fiber shedding this problem, in order to prevent its pollution of filtrate, at the same time, can avoid the problem of blocking the filter hole, so as not to shorten the service life of the filter bag. In the raw material, it is white, and without any bleaching and dyeing treatment.



This kind filter bag can use the three-dimensional filter layer of needled-felt, so that when the liquid flows through the filter bag, the particles will stay in the inner wall surface and deep layer of the filter bag, to catch solid or colloid particles, so that the filter bag has a higher rate of collection. With uniform thickness, stable porosity and sufficient strength, the needle felt can make the filter bag highly efficient and stable, and has a long service life and wide application, which can be used for liquid filtration in various industries.