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Explain in Detail Entire Working Process of RKSfluid Candle Filter

  • Author:RKSfluid Newsroom
  • Release on :2019-11-11
The candle filter is completely sealed and leak-free without any environmental pollution. The filter design adopts a double structure, which has a wide application field and good filtering effect. Can achieve one-time complete filtering. The filter cake can be washed and dried to obtain greater economic benefits. The gas is blown back by slag, and the slag is clean and quick, and is suitable for a variety of viscous materials. The entire process can be fully automated.

The center of the candle filter, the wall of the night collector is solid, the purpose is to completely eliminate the night from the filter unit. The filter tube, as a support for the filter medium, has an opening in the bundled tube wall. Typical filter tube openings. The filter medium is pressed against the bundled filter tube during the filtration process. Filter cake, collection chamber, connecting central tube and filter tube. Clear the solution and leave the filter from the center tube, unfiltered suspension.

The RKSfluid candle filter combines a plurality of porous filter elements in a closed container, and filters the filter cloth (or other filter medium) on the filter casing. When filtering, the slurry is sent into the filter by the pump, and the liquid in the slurry The phase passes through the filter medium and enters the center of the porous filter element and is discharged to the clear liquid outlet. Before the filter cake layer is formed, the discharged "clear liquid" is returned to the raw material slurry inlet and sent to the filter for circulation filtration until the filter cake layer is formed. (able to meet the filtration requirements), providing a signal to control the clear liquid without recycling, the clear liquid is sent to the next process through the three-way valve for normal filtration.


After the candle filter is normally filtered for a period of time, when the filter cake layer on the porous wick reaches a certain thickness, the rate at which the filtrate passes through the filter cake decreases, the filtration efficiency deteriorates, and the filter pressure rises, at which time the differential pressure switch (or pressure) The sensor) provides a signal to the PLC to stop the filter pump, close the feed valve, open the positive blow valve, and then drain the residual liquid in the filter. When the liquid in the filter is lower than the filter element, open the drain valve residual liquid through the drain valve. Drain, when the pressure inside the filter drops rapidly, the PLC receives the low pressure signal, closes the positive blow valve, opens the back blow valve (compressed air, nitrogen or saturated steam) for backflushing, so that the filter cake falls off and back blows for a certain period of time ( 30 seconds), stop backflushing, open the filter slag discharge port for slagging, close the slag discharge port after slag discharge, complete a filtration cycle, return to the initial state before filtration, and prepare for the next round of filtration.

The candle filter stops filtering and compresses the gas into the tank. Under the action of the compressed gas, the solution in the tank continues to be filtered (the filtrate can be treated differently according to the quality requirements of the medium and the clear liquid). After the filtration is completed, the residual gas can be drained by relying on a compressed gas or a residual liquid pump. The compressed gas is regularly introduced into the filter element from the outlet of the clear liquid, and the impurities on the metal filter element are blown off; the filter bag filter element compresses the gas to cause the filter bag to expand and shake, and the impurities fall off with the jitter, on the filter element The impurities are blown off by the gas. The shed impurities are discharged from the bottom discharge port of the filter.


Performance characteristics
1. Simple and convenient operation, small floor space and easy installation;
2. High filtration precision, suitable for any fine particles or suspended matter;
3. The effective filtration area is large, and the filter function of one filter bag is equivalent to 5~10 times of the same type of filter element, which can greatly reduce the cost;
4. Widely used, can be used for coarse or fine filtration;
5. The processing flow per unit of filtration area is large, the resistance is small, and the filtration efficiency is high;
6. Under the premise of achieving the same filtering effect, it has greater advantages than filter filters and raw water pretreatment filters, low investment cost, low filtration cost and long service life.