Trustworthy Leaf filter Supplier

Your Trusted Leaf Filter Supplier for Uncompromising Quality
By Lvda Filter / June 17 , 2026

The leaf filter (also known as pressure leaf filter) is a high-efficiency, hermetically operated precision solid-liquid separation equipment. It mainly consists of a pressure vessel and multiple stacked internal filter leaves. Suspended solids are retained by filter screens. Filter leaves are generally assembled in groups to expand the filtration area, so as to improve filtration rate and product clarity. We supply filter leaves in various sizes and shapes to meet the customized requirements of your pressure leaf filters. Leaf filters are widely used for the precision separation of fluid materials in chemical, petroleum, pharmaceutical, food and beverage industries.

Compared with traditional separated filtering, drying and separating equipment, this machine has outstanding comprehensive advantages: it realizes fully unmanned operation, supports intact cleaning and recovery of filter cake without shedding, adopts fully sealed processing to guarantee safe, clean production free of foreign matter contamination, and takes up remarkably less floor space.Benefiting from medium and high precision filtration performance and good adaptability to toxic, volatile and corrosive media.


Table of Contents
  • Main Composition
  • Working Principle
  • Features
  • Advantages
  • Applications
  • Application Industries

Main Composition

Main Composition

The leaf filter is mainly composed of a housing, filter plates, filter screens, distribution devices, and residue discharge devices. Among these components, the filter screen serves as the core part of the leaf filter, its material and filtration precision directly determine the filtration performance. The filter leaves function to support the filter screens and distribute slurry, ensuring uniform spread of slurry across the filter screens.

Working Principle

Working Principle

This unit features a filter leaf filtration design. As oil flows into the filter leaves, solid contaminants are trapped, and clarified clean oil exits via the oil outlet. Once a filter cake builds up on the filter leaf surfaces, the top-mounted air-blowing assembly supplies compressed air to dry the filter residues. The unit then initiates vibration to dislodge the dry filter cake, enabling fully automatic sludge discharge whereby dry solid waste is evacuated from the bottom.

Features

Features

Cost-effective: This leaf filter greatly cuts down labor and material costs in terms of structure and operation.

High filtration precision: Equipped with high-precision filter media such as stainless steel filter screens to guarantee excellent filtration performance.

High degree of automation: Fully automatic operation is available to boost production efficiency.

Wide range of applications: It is suitable for precision filtration of fluid materials, as well as decolorization filtration of various liquids.

Advantages

Advantages

(1) Fully automatic operation.

A full set of processes including filtration, drying and filter cake discharge can run automatically with no manual intervention required.

(2) Capable of washing and extracting filter cake.

Filtration is carried out on horizontal filter leaves, which prevents peeling and falling off of the filter cake layer. Continuous supply of washing liquid after filtration enables efficient washing and extraction of filter cake.

(3) Maintains a favorable working environment.

All operations proceed under fully sealed conditions. Unlike separate filter and drying units that require manual handling of solid materials, this machine ensures a safe and clean working atmosphere even when processing hazardous materials such as toxic substances and solvents. There is no risk of foreign matter contaminating products during operation, helping to upgrade product quality.

(4) Small floor space.

As a vertical filter, it occupies minimal ground area. Its footprint is far smaller compared with the side-by-side installation of separate filters, separators and dryers.

Applications

Applications

Clarification and impurity removal: Remove suspended solids, suspended matter and fine particles from liquids to improve liquid cleanliness and clarity.

Decolorization and refining: Complete liquid decolorization, purification and refinement with activated carbon, diatomaceous earth and activated clay.

Solid-liquid separation: Trap valuable solid materials such as catalysts, bacteria and crystals for material recovery.

Precision filtration: Meet medium and high-precision filtration requirements, suitable for sanitary, explosion-proof, volatile and toxic materials.

Application Industries

Application Industries

(1) Oil & Fat Industry (Most Widely Used)

· Refining, decolorization, degumming and dewaxing of crude animal and vegetable oils;

· Purification, impurity removal, decolorization and dewaxing of edible oil, lubricating oil, hydraulic oil and industrial oil products.

(2) Food & Beverage Industry

· Clarification of alcoholic beverages (Chinese liquor, beer, red wine) to remove yeast and protein precipitates;

· Filtration and purification of syrup, fruit juice, vinegar, condiments and fermentation broth.

(3) Pharmaceutical & Biotechnology Industry

· Filtration of antibiotics, traditional Chinese medicine extracts and fermentation broth to separate mycelium and residues;

· Decolorization and fine filtration of medicinal liquid to meet clean production standards.

(4) Chemical Industry

· Filtration and residue removal of resin, coatings, dyes, adhesives and solvents;

· Recovery of chemical intermediates and catalysts, as well as filtration of corrosive liquids.

(5) Environmental Protection & Water Treatment

· Removal of suspended sludge and impurities from industrial wastewater and circulating water;

· Pretreatment of sewage and purification of waste liquid.

(6) Other Fields

Daily Chemicals: Filtration of flavors, fragrances and washing & care raw materials;

· Metallurgy & Mineral Industry: Solid-liquid separation of ore pulp and leachate.

The leaf filter is a high-efficiency vertical solid-liquid separation device with mature automatic operation logic. Its working process centers on filter leaf interception for liquid purification; after filter cake forms, integrated top air-blowing and vibration structures dry residues and complete automatic bottom slag discharge, greatly reducing manual labor.