本文来源 : bg视讯在线 发布时间 : 2019-04-04 10:26
The plate and frame filter press is pressed, fed, washed or dried, and the unloading operation is explained in detail. As we all know, the plate and frame filter press has a large filtration area, a large flow rate, and a wide application range. Therefore, it has a wide range of applications in the pharmaceutical, chemical, food and other industries, and is applied to the filtration of pharmaceutical injections in pharmaceutical factories, and the effect is very good. So what do you know about the four-part work of the plate and frame filter press? Here is a brief introduction to the four songs of the plate and frame filter press.
Now, the frame and frame filter press equipment will undergo four steps of pressing, feeding, washing or drying, and unloading during operation. Referred to as the plate frame filter press work four songs.
The plate and frame filter press checks the whole machine in advance, including the filter cloth and the power supply. Pay attention to open the discharge valve. Press the "Start" button. At this point, the oil pump starts to work, then the piston pushes the compression plate to compress, and when the pressure of the chamber reaches the design point, the hydraulic device automatically stops working. In the subsequent work, when the pressure is reduced and the normal operation is not satisfied, the hydraulic system will automatically open.
When the plate and frame filter press is pressed, the feeding operation can be performed: the feed pump is turned on, and the feed valve is slowly opened, and the feed pressure is gradually increased to the normal pressure. At this time, observe the liquid out of the plate filter press and the leakage between the filter plates. After filtering for a period of time, the liquid output from the filter press of the plate frame filter is gradually reduced. At this time, the filter residue in the filter chamber is gradually filling up. When the liquid port is not discharged or there is only a small amount of liquid, it is proved that the filter residue in the filter chamber is completely filled to form a filter cake. If the filter cake needs to be washed or air-dried, it can be carried out subsequently, and the unloading operation can be carried out without washing or air drying.
3. Wash or air dry
After the plate filter press filter is full, the feed pump and feed valve are closed. Open the washing pump or air compressor, slowly open the washing liquid or air inlet valve, and wash or air dry the filter cake. After the operation is completed, the washing machine or the air compressor and its valves are closed, and the unloading operation can be performed.
4. Unloading cake
This process is to close the feed valve, enter the air duct, and then the plate frame filter press will slowly retract, reduce the pressure on the filter plate, and even take the piston rod back to the appropriate amount of position, take out a piece A filter plate removes the cake from the filter plate. During the removal process, pay attention to the protection of the filter cloth to prevent the filter residue from being caught on the sealing surface to affect the sealing performance and cause leakage. Now the frame and frame filter press equipment has two methods: manual unloading and automatic unloading.
These four steps are indispensable for the operation of the plate and frame filter press, but due to the development of technology, sometimes the filtration and the blowing and drying are carried out at the same time, so some equipment will not be gradually carried out, thereby improving the efficiency.