板框压滤机压紧、进料、洗涤或干燥、卸料操作详细讲解。正如大家所了解的，板框压滤机的过滤面积大，流量大，适用范围大，所以在制药、化工、食品等行业有广泛用途，应用在制药厂针剂药液之过滤，效果甚佳。那么板框压滤机工作的四部曲你了解吗？下面就为大家介绍一下板框压滤机工作的四部曲。
现在板框压滤机设备在工作运行时，都会经历压紧、进料、洗涤或干燥、卸料等四个步骤。简称板框压滤机工作四部曲。
1.压紧
板框压滤机事先对整机检查，包括滤布、电源是否正常，注意要打开排出阀。在按下“启动”按钮。这时油泵开始工作，然后活塞推动压紧板压紧，当虑室的压力达到设计点时，液压器就会自动暂停工作。当随后的工作中，压力减小，不能满足正常工作时，液压系统会自动开启。
2.进料
当板框压滤机压紧后，即可进行进料操作：开启进料泵，并缓慢开启进料阀门，进料压力逐渐升高至正常压力。这时观察板框压滤机出液情况和滤板间的渗漏情况，过滤一段时间后板框压滤机出液孔出液量逐渐减少，这时说明滤室内滤渣正在逐渐充满，当出液口不出液或只有很少量液体时，证明滤室内滤渣已经完全充满形成滤饼。如需要对滤饼进洗涤或风干操作，即可随后进行，如不需要洗涤或风干操作即可进行卸饼操作。
3.洗涤或风干
板框压滤机滤饼充满后，关停进料泵和进料阀门。开起洗涤泵或空压机，缓慢开启进洗液或进风阀门，对滤饼进行洗涤或风干。操作完成后，关闭洗液泵或空压机及其阀门，即可进行卸饼操作。
4.卸饼
这过程是先关闭进料阀，进风道，然后板框压滤机推板就会缓慢的退回，减小对滤板的压力，甚至会随着活塞杆退回到适当额度位置，在取出一块一块的滤板，将虑饼从滤板卸下，在卸除过程中，注意对滤布的保护，防止滤渣夹在密封面上影响密封性能，产生渗漏现象。现在板框压滤机设备有人工卸料和自动卸料两种方式。
这四步是板框压滤机工作的不可少的，但由于科技的发展，有时过滤和吹风干燥是同时进行的，所以有的设备不会逐步进行，从而提高效率。
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.
Press tight
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.
2. Feeding
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.
