Surface filtration is mainly used mesh material, depth filtration is the use of felt material, the difference is as follows: ??
1. Screen material (nylon monofilament, monofilament metal) will be filtered directly in the material surface impurities. The advantage is that the monofilament structure can be repeatedly washed, and the cost is relatively low. The disadvantage is that the surface filtration mode can easily cause the surface of the filter bag to be clogged. This type of product is most suitable for the coarse filtration with lower precision with the filtration precision of 25-1200μm.
2. Felt material (acupuncture cloth, melt blown nonwovens) is a common deep three-dimensional filter material, which is characterized by loose fibrous tissue, high porosity increases the amount of impurity content, the fiber material is a double intercept model, that is Larger particles are trapped on the surface of the fiber, while fine particles are trapped in the depth of the filter. Therefore, the filter has a high filtration efficiency. In addition, the high temperature surface heat treatment, that is, the instantaneous sintering technique can effectively prevent the fiber from being affected by filtration Flush high-speed fluid with the loss; felt material is a disposable type (one-time use), filtration accuracy 1-200μm.
