Diaphragm filter press working principle and advantages

The diaphragm filter press, with the aid of the feed pump, feeds the filtered material into the filter chamber of the equipment and filters it through the filter chamber (generally the filter cloth can only pass liquid and very small solid particles), and the liquid is The filter cloth is oozing out, and the solid is intercepted on the filter cloth, thus completing the function of the general filter press device.
The biggest feature of the diaphragm filter press is that it can be used for secondary drying press cake. The special design of the filter chamber makes it automatically close the feed valve after the filter chamber is filled with the filter cake, and the gas or liquid is introduced into the filter chamber. , the filter cloth is expanded and deformed, thereby achieving the effect of secondary pressing of the filter cake, further reducing moisture.
Further gas is introduced to further reduce the moisture in the filter cake. The high-pressure air passes through the filter cake, and the water such as capillary water and structural water in the filter cake is separated and separated. It is the hair dryer method.
The diaphragm filter plate has a split type high-polypropylene filter plate, an integrated high-pressure polypropylene diaphragm filter plate, a filter cloth high-pressure polypropylene diaphragm filter plate and a rubber diaphragm filter plate.

General diaphragm filter press equipment has the following advantages:
1. Shorten the filtering operation time.

2. Saving the consumption of operating power. In the late stage of filtration, the flow rate is small and the pressure is high.

3. Save power consumption.

4, further reduce the moisture of the filter cake, generally can reach about 9%.

5. Compared with the plate and frame filter press, the effective filtration area is increased, and the filtration speed is accelerated.

6, acid, alkali, the use of higher temperatures, generally can be used at temperatures around 230, more widely used, basically suitable for all solid-liquid separation operations.

7, the degree of automation is higher. The user-friendly structural design makes the control and operation more convenient.

8. The diaphragm filter plate has the characteristics of anti-fatigue, anti-aging and good sealing performance.

9. It is convenient to replace the filter cloth.