Unveiling the Efficient Dehydration Technology of Vehicle mounted Filter Press

Unveiling the High - Efficiency Dewatering Technologies of Vehicle - Mounted Filter Presses

1. Diaphragm Pressing Technology

1.1 Working Principle

In vehicle - mounted filter presses, diaphragm pressing is a core dewatering technology. The filter press is equipped with diaphragm filter plates. After the initial solid - liquid separation through normal filtration, high - pressure fluids (such as compressed air or water) are introduced into the space between the two layers of the diaphragm plate. This causes the diaphragm to expand and press the filter cake inside the filter chamber.

1.2 Advantages

This technology significantly reduces the moisture content of the filter cake. By applying additional pressure to the filter cake, it forces out more interstitial water. For example, in sludge dewatering applications, the moisture content of the sludge filter cake can be reduced from around 80% in normal filtration to as low as 60% or even lower after diaphragm pressing, which greatly reduces the volume of the final waste product and is beneficial for subsequent disposal or transportation.

2. High - Pressure Filtration Technology

2.1 Working Mechanism

Vehicle - mounted filter presses are capable of operating at relatively high pressures. High - pressure pumps are used to send the slurry to be filtered into the filter chamber. The high - pressure environment accelerates the movement of liquid through the filter medium (filter cloth). The pressure difference between the inside and outside of the filter chamber promotes the rapid separation of solid and liquid components.

2.2 Benefits

The high - pressure filtration technology not only shortens the filtration cycle but also improves the dewatering efficiency. In industrial wastewater treatment, for instance, compared to low - pressure filtration, high - pressure filtration can handle a larger volume of wastewater in a shorter time while achieving better dewatering results, ensuring that the filtered solid matter has a lower moisture content and meets the relevant discharge or reuse standards.

3. Optimized Filter Medium

3.1 Selection of Filter Cloth

The choice of filter cloth in vehicle - mounted filter presses is crucial for efficient dewatering. Specialized synthetic filter cloths are used, which have high porosity for rapid liquid passage but fine enough pores to retain solid particles effectively. These filter cloths are often made of materials such as polypropylene or polyester with surface treatments to enhance their anti - clogging and anti - corrosion properties.

3.2 Filter Medium Structure

Some advanced vehicle - mounted filter presses use multi - layer filter media structures. The outer layer may be a coarser - textured material to capture larger particles initially, while the inner layers are composed of finer - meshed materials to further refine the filtration and ensure maximum liquid - solid separation. This multi - layer structure improves the overall filtration accuracy and dewatering performance, preventing fine solid particles from escaping with the filtrate and improving the clarity of the separated liquid.

4. Intelligent Control System for Dewatering

4.1 Process Monitoring

An intelligent control system is installed in vehicle - mounted filter presses to monitor the dewatering process in real - time. Sensors are used to detect parameters such as pressure, flow rate of the slurry, and moisture content of the filter cake. For example, pressure sensors can monitor the pressure inside the filter chamber during the filtration and pressing stages, ensuring that the pressure is maintained within the optimal range for efficient dewatering.

4.2 Adaptive Adjustment

Based on the data collected by the sensors, the control system can make adaptive adjustments. If the moisture content of the filter cake detected is higher than the set value, the system can increase the pressing time or pressure. In the case of a change in the slurry flow rate, the system can adjust the speed of the feeding pump to ensure a stable and efficient dewatering process, thus maximizing the dewatering efficiency under various working conditions.