Specialized Pumps for Filter Presses Meet Full-Process Requirements Through "Working Condition Self-Adaptation Design"

• Flow-Pressure Linked Regulation: Equipped with a variable plunger structure or a variable-frequency control system, the pump can adjust output parameters in real time based on the slurry level in the filter press and pressure feedback. During the initial feeding stage, it fills the filter chamber quickly with a large flow rate (e.g., 50-100 m³/h). When the pressure rises to a set value (usually 0.8-2.5 MPa), it automatically switches to a small flow rate for pressure maintenance, preventing filter cloth damage.
• Multi-Scenario Adaptability: Targeting the different structural characteristics of plate-and-frame filter presses, box-type filter presses, and diaphragm filter presses, specialized pumps optimize the inlet/outlet calibers and pressure curves. For example, when adapted to diaphragm filter presses, they can provide a pulsed pressure boosting function to support "deep dewatering" in the diaphragm pressing process—reducing the filter cake moisture content by 3%-5% compared to scenarios using general-purpose pumps.
• Medium Compatibility: For media with different concentrations (solid content 10%-60%) and properties (acidic, alkaline, containing hard particles)—such as mineral processing tailings slurry, chemical sludge, and food residues—specialized pumps can be customized with flow-passing component materials (e.g., corrosion-resistant stainless steel, wear-resistant alloys). This prevents medium-induced corrosion or blockage, resulting in far superior adaptability compared to general-purpose pumps.

  Durability as the "Baseline": Wear-Resistant Design of Specialized Pumps Solves High-Frequency Failures

  Media conveyed in filter press systems often contain hard particles (such as ore debris and quartz sand). The flow-passing components (impellers, pump casings, seals) of traditional general-purpose pumps are prone to wear due to particle scouring, with an average service life of only 300-500 hours. Frequent shutdowns for component replacement are required, which not only increases maintenance costs but also disrupts the production process.

  
  

  Specialized pumps for filter presses enhance wear resistance from the dual dimensions of "structure + material", significantly extending service life and reducing failure frequency:

  Wear-Resistant Structural Optimization

  1. Streamlined Flow-Passing Channels: Large-caliber, dead-angle-free flow-passing channel designs are adopted to reduce media retention and impact inside the pump, lowering the scouring intensity of particles on channel walls. Some specialized pumps are also equipped with "particle buffer chambers" to prevent particles from directly impacting core components.
  2. Clearance Compensation Mechanism: For specialized equipment such as plunger pumps, an automatic clearance compensation structure is designed. When slight wear occurs on the plunger or cylinder block, the compensation device can automatically adjust the sealing clearance to maintain conveying efficiency and avoid pressure drop and flow attenuation caused by wear.

  Wear-Resistant Material Upgrading

  1. Core Component Materials: Flow-passing components are made of high-hardness materials, such as ceramics (hardness above HRC85), bimetallic alloys (e.g., Cr26 wear-resistant cast iron), and tungsten carbide coatings. Their wear resistance is 5-8 times that of ordinary cast iron, enabling them to withstand scouring by high-concentration particle media with a solid content of over 30%.
  2. Seal Enhancement: Multi-layer composite seals (e.g., polyurethane + polytetrafluoroethylene composite seals) are used, or mechanical seals are paired with flushing systems to prevent particles from entering the sealing surface and causing wear and leakage. The service life of such seals can reach 3-4 times that of traditional seals.