The reason and solution of filtrate unclear of plate and frame filter press

Plate and frame filter press for solid-liquid separation treatment, the filtrate is basically clear liquid, if the water is unclear or cloudy, it must be checked on the plate and frame filter press, you can check from the following four aspects one by one.

1, the feed port protection is not strict：

It is because of the turbidity caused by the leakage of liquid at the feed port of the plate and frame filter press. If the problem is found due to the lax protection of the feed port, it is necessary to check the seal gasket and connection of the feed port in time. If abnormal conditions such as damage are found, the relevant parts should be replaced and cleaned up in time, and then the sealing gasket should be added and the feed port should be tightened, and then the turbidity of the filtrate should be improved.

2. Improper selection of press cloth：

When selecting the filter cloth, the plate and frame filter press should select the appropriate filter cloth according to some characteristics of its filtrate. If the filter cloth of plate and frame filter press is not selected properly, it is easy to cause the filter cloth to fail soon, and if the filtrate is turbidious in this case, it will often become gradually serious, and there will be widespread problems in almost all places of the filter cloth. Or it is caused by the opening of the selected press cloth. At this time, it is necessary to replace the appropriate press cloth.

3. The filter cloth of plate and frame filter press equipment is damaged：

In this case, the filter cloth may be damaged. You can carefully check the turbidity of the filtrate flow. If it is caused by turbidity of the filtrate of individual water nozzle, the damage of the filter cloth can be judged basically. During subsequent operations, take proper measures and replace appropriate filter cloth.

4. The stitching place of the filter cloth of the plate and frame filter press is opened：

If problems are found in the stitching of the press cloth, remove the press cloth and sew it again.

The selection of cloth of plate and frame filter press should meet the filtration technical requirements of filtrate, the new filter cloth should be shrunk before installation, the hole diameter should be smaller than the filter plate aperture, the hole and plate hole should be completely aligned when supporting the filter plate, the feed hole cloth of plate and frame filter press should be close to the cylinder wall, otherwise it will cause unclear filtration, low filtration efficiency, cloth cylinder rupture, and can not achieve the expected filtration effect.