Plate and frame filter press is a kind of equipment widely used in solid and liquid separation, its working principle is to apply pressure to make the material form a filter cake on the filter cloth, so as to achieve solid-liquid separation. In the working process of plate and frame filter press, the feed pressure is an important parameter, which directly affects the separation effect and production efficiency. This article will ** different feed pressures of plate and frame filter presses in different working stages.
First, the feeding stage.
During the feeding phase, the feed pressure of the plate-and-frame filter press should be adjusted according to the nature of the material and the design of the filter press. For viscous materials, it is necessary to increase the feeding pressure appropriately to ensure that the materials can smoothly enter the filter press and fill the filter chamber. At the same time, the setting of the feed pressure also needs to consider the bearing capacity of the filter press to prevent equipment damage caused by excessive pressure. In practice, it is necessary to test and adjust according to the characteristics of the material and the performance of the filter press to determine the optimal feed pressure.
Second, the pressing stage.
In the pressing stage, the function of the feed pressure is mainly to squeeze out the moisture in the material and make the filter cake form a certain thickness. At this stage, the control of the feed pressure is very important, which not only affects the moisture content of the filter cake, but also affects the service life of the filter press. If the feed pressure is too high, it may cause problems such as damage to the filter cloth and water leakage at the plate and frame connectionIf the pressure is insufficient, it will lead to a high moisture content in the filter cake and poor separation. Therefore, the feed pressure needs to be adjusted according to the actual situation to ensure the smooth progress of the pressing stage.
3. Washing stage.
The washing stage is an auxiliary process of the plate-and-frame filter press to remove residues from the filter cake and improve its purity. At this stage, the control of the feed pressure is equally important. Proper feed pressure can improve the washing effect and allow for better removal of residues in the filter cake. However, excessive feed pressure may damage the structure of the filter cake, causing the wash water to enter the gap between the filter cloth and the plate frame, which can affect the filtration effect and equipment life. Therefore, it is necessary to choose the appropriate feed pressure according to the actual situation.
Fourth, the blowing stage.
The blowing stage is another auxiliary process of the plate and frame filter press, the purpose of which is to remove the moisture between the filter cloth and the plate and frame by blowing, so as to facilitate the discharge and reduce the discharge time. At this stage, the effect of the feed pressure is not obvious, but the appropriate feed pressure can ensure that the material does not move or fly due to blowing. In practice, the appropriate feed pressure can be selected according to the nature of the material and the production requirements.
To sum up, the plate and frame filter press needs different feed pressures in different working stages to ensure the normal operation and separation effect of the equipment. In practice, it is necessary to test and adjust according to the nature of the material, the design and production requirements of the filter press to determine the optimal feed pressure. At the same time, it is also necessary to pay attention to the stability and uniformity of the control of the feed pressure to prevent equipment damage and affect the separation effect. By controlling and adjusting the different feed pressures in different working stages, the production efficiency and service life of the plate and frame filter press can be improved, so as to create more economic benefits for the enterprise.