The factory directly supplies fully automatic diaphragm filter presses, integrating filter cloth water flushing, offering efficient automation and customized dehydration solutions.
1. Plywood compression: The hydraulic system drives the compression plate, which compresses all the filter plates and diaphragm plates, creating a sealed filter chamber.
2. Feed filling: The feeding pump pumps the suspension (material) into the filter press, filling each filter chamber evenly. Under the pressure of the pump, the liquid passes through the filter cloth and becomes clear filtrate (mother liquor) that is discharged; the solids are retained in the filter chamber, forming the initial filter cake.
3. One diaphragm compression (the key step):
After the feed is completed, inject high-pressure water or compressed air into the diaphragm plate.
The diaphragm bulges out and performs a second intense squeezing on the initial filter cake inside the filter chamber, further extracting the moisture within it, significantly reducing the moisture content of the filter cake.
4. Blowing-through flow (optional): After the pressing process is completed, compressed air can be introduced to penetrate the filter cake layer and blow away the residual moisture in the capillary structure of the filter cake, further reducing the solid content.
5. Pressure relief and release: The pressure medium within the diaphragm and the residual pressure in the filter chamber are released. The hydraulic system is withdrawn, and the pressing plate is released.
6. Automatic plate pulling and cake discharging:
Under the control of the electronic system, the plate puller sequentially and individually pulls out the filter plates.
Under the influence of its own weight and the deformation of the filter cloth, the filter cake falls off from the filter plate and drops into the collection tank or conveyor below, achieving automatic discharge.
7. Automatic filter cloth rinsing (cleaning guarantee):
During the plate-laying process or after unloading, the mobile flushing devices installed on both sides or at the top of the filter press will automatically start.
This device is equipped with a high-pressure nozzle that moves back and forth on the filter cloth surface, spraying out a high-pressure water jet. This thoroughly washes away the remaining particles adhering to the pores of the filter cloth, restoring its filtering performance, preventing blockage, and ensuring the filtration efficiency for the next cycle.
1. Extremely high dehydration efficiency and extremely low cake moisture content:
The high-pressure diaphragm pressing technology is crucial. It can further reduce the moisture content of the filter cake by 5% to 15% compared to the initial pressure filtration. For certain materials, the final moisture content can be reduced to below 20%, resulting in a dry and hard filter cake. This significantly reduces the subsequent drying costs and transportation costs.
2. Fully automated operation, saving manpower:
The automatic plate feeding and automatic rinsing functions have liberated the operators from the heavy and dirty physical labor. One person can manage multiple devices, and all monitoring can be done in the control room, significantly reducing labor costs and safety risks.
3. Long-lasting and stable filtering effect:
The automatic water flushing system for filter cloth can promptly and effectively clean the filter cloth, avoiding problems such as decreased filtration speed and reduced production capacity caused by filter cloth blockage. This ensures that the equipment can operate stably at a high efficiency for a long time and extends the service life of the filter cloth.
4. Powerful processing capabilities and high production capacity:
The processing capacity per cycle is large, making it suitable for large-scale continuous production.
The rapid cycle period (thanks to automation) has further enhanced the processing capacity within a unit of time.
5. Energy conservation and environmental protection:
Compared with traditional box-type filter presses, during the membrane pressing stage, the energy consumption is much lower when achieving the same or even lower moisture content than when using high pump pressure for feeding throughout the process.
The filtrate is clear, the solid recovery rate is high, and it meets environmental protection requirements. The automatic discharge and flushing reduce leakage and spillage on site, improving the working environment.
6. Safe and reliable operation:
Equipped with multiple safety protection devices, such as hydraulic overload protection, pull bar system limit protection, emergency stop button, etc., to ensure the safety of both the equipment and personnel.
The electrical control system is programmed using PLC, which is highly reliable with a low failure rate.
1. Mining: Metal tailings (lead-zinc ore, copper ore, gold ore, etc.), mineral concentrate dehydration, treatment of bauxite red mud.
2. Chemical Industry: Filtration of pigments, dyes, titanium dioxide, calcium carbonate, fertilizers, and resins.
3. Environmental Protection: Deep dewatering of industrial wastewater sludge (such as sludge from electroplating, dyeing, and papermaking) and urban domestic sludge.
4. Metallurgy: Metal waste residue, catalyst recovery.
5. Food: Starch, syrup, etc.
6. Ceramics/Building Materials: Ceramic slurry, kaolin dehydration.