Reasons for Filter Plate Breakage During the Use of Pressure Filters and Solutions

The Core Cause of Filter Plate Damage

1. Improper operationImmediate excessive feeding pressure exceeded the filter plate's rated load capacity; the press filter was not fully tightened before feeding, leading to uneven distribution of forces on the filter plate; and during unloading, the filter plate was forcibly struck, causing physical damage.
2. Filter plate issueFilter plate material aging and fatigue (cracks caused by long-term repeated pressure); product quality does not meet standards, with defects such as uneven thickness and material impurities.
3. Equipment Coordination FailureFilter cloth clogging causes a sudden increase in feed resistance, indirectly increasing the pressure on the filter plate; misalignment of the pull plate mechanism and uneven tracks lead to collisions during filter plate movement; deformation of the thrust plate or clamping plate causes unbalanced force on the filter plate.
4. Material Characteristics ImpactHard impurities (such as gravel, metal particles) mixed into the material can squeeze and scrape against the filter plate during the filtration process; corrosive materials can erode over time, leading to degradation and cracking of the filter plate material.

Section II: Targeted Solutions

1. Standardize Operational ProceduresDuring the feeding process, the frequency conversion control is utilized to gradually increase the pressure to the rated pressure (usually 0.6-1.2MPa). Strictly adhere to the "clamp first, feed later" principle, and ensure the filter plate is properly sealed before starting the feeding pump; use special tools for unloading, and prohibit striking or prying at the filter plate.
2. Enhanced Filter Plate Maintenance and SelectionRegularly inspect the filter plate surface for minute cracks and replace them promptly; select suitable materials based on the material properties (such as corrosion-resistant filter plates for acidic and alkaline materials); avoid using beyond the expiration date, as the typical lifespan of a filter plate is 1-3 years (adjustable based on usage frequency).
3. Enhance equipment operational statusRegularly clean or replace filter cloths to prevent clogging; calibrate the pull plate mechanism and track to ensure smooth filter plate movement; inspect the flatness of the thrust plate and clamping plate, and correct or replace them promptly if deformed.
4. Pre-treatment MaterialPrior to filtration, hard impurities in the material are removed through screening and sedimentation methods; for corrosive materials, pre-neutralization treatment is conducted or specialized corrosion-resistant filter plates are chosen to minimize material erosion.