Diaphragm filter press is an important filtration equipment, which is widely used in various industrial fields. To ensure efficient operation and a long service life, an automatic flushing device becomes an indispensable component. The following will introduce in detail the working process of the automatic flushing device of the diaphragm filter press.
First, the working principle.
The working principle of the diaphragm filter press automatic flushing device is mainly to flush the filter cloth regularly through high-pressure water or air to remove the residual filter cake and impurities on the filter cloth. During the filtration process, as the cake thickens, the permeability of the filter cloth will gradually decrease, resulting in a decrease in filtration efficiency. Therefore, the function of the automatic flushing device is to ensure the permeability of the filter cloth, so as to ensure the normal operation of the filter press.
Second, the flushing method.
1.High-pressure water flushing.
High-pressure water flushing is one of the common automatic flushing methods. In the filtration process, when the thickness of the filter cake on the filter cloth reaches a certain value, the flushing device will automatically start, inject water into the filter cloth through a high-pressure water pump, and use the scouring force of the water flow to flush the filter cake and impurities on the filter cloth. This method has a better flushing effect, but attention should be paid to prevent water from causing secondary pollution to the filter cake.
2.Compressed air flushing.
Compressed air flushing is a relatively new automatic flushing method. The device uses the energy of compressed air to spray high-pressure air onto the filter cloth through the nozzle, and uses the scouring force of the air flow to remove the filter cake and impurities on the filter cloth. This method has the advantages of environmental protection and energy saving, but attention needs to be paid to ensure the quality and pressure stability of the air.
Third, the work process.
1.Initiation phase.
The diaphragm filter press automatic flushing device is automatically put into operation after the filter press is started. At the initial stage, the filter cloth is thoroughly inspected to ensure that there are no breakages or blockages. If there is a problem, the device will automatically alarm and stop for maintenance.
2.Rinsing phase.
During the filtration process, the automatic flushing device will periodically flush the filter cloth as the filter cake thickens. Depending on the flushing method, the filter cloth is flushed with high-pressure water or compressed air at set intervals or pressure conditions to remove residue from the filter cloth. In order to ensure the flushing effect, the device will also check the quality of the flushing water or air, and deal with any problems in time.
3.Monitoring and regulation.
The automatic flushing device is equipped with an intelligent monitoring system, which can monitor the operating status and flushing effect of the filter press in real time. Based on the monitoring data, the unit automatically adjusts the intensity and frequency of the flush to meet the requirements of the filtration process. At the same time, the monitoring system can also record the operation data of the equipment to provide a basis for subsequent fault diagnosis and optimization.
4.Alarm and shutdown.
When the automatic flushing device fails or the filter press runs abnormally, the monitoring system will immediately send out an alarm signal to remind the operator to deal with it in time. If necessary, the unit will automatically shut down to protect the equipment from further damage. In order to ensure safety, operators need to quickly investigate the cause of the fault and take corresponding measures based on the alarm information.
IV. Conclusions. The diaphragm filter press automatic flushing device is a key component to ensure the efficient and stable operation of the filter press. Regular rinsing of the filter cloth with high-pressure water or compressed air can effectively remove the residue on the filter cloth and ensure the permeability and filtration efficiency of the equipment. In industrial production, it is of great significance to choose the appropriate automatic flushing device and configure it reasonably according to the process requirements to improve production efficiency and reduce maintenance costs. At the same time, strengthening the daily maintenance and maintenance of the equipment is also a key measure to ensure the long-term stable operation of the automatic flushing device.