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Pressure Leaf Filter

2025-07-17 16:52:27

Product Introduction

Basic Product Introduction

Closed Plate Filter (Leaf Filter) is a high-efficiency, fully enclosed solid-liquid separation equipment, whose core structure consists of a number of vertically or horizontally aligned filter leaves, which is suitable for the filtration of materials with high solids content, viscous or containing fine particles, and is especially suitable for processes that require airtight operation, washing or drying of filter cake.

Closed Plate Filter

Product Filtration Principle

The filter is based on pressurized filtration and cake layer filtration technology.

The material to be filtered enters the airtight tank under the action of pump pressure, the liquid is driven by the pressure through the filter mesh or pre-coated filter aid layer covered on the surface of the filter leaves, and the solid particles are retained to form the filter cake layer.

As the filtration proceeds, the cake layer itself also becomes the filtering medium, which can effectively intercept the finer particles and realize deep filtration. For materials with high precision requirements, diatomaceous earth and other filter aids can be pre-coated on the surface of the filter leaves to form a uniform porous filter layer, and filter aids are continuously added during the process to maintain a smooth filtration channel.

After the filtration is completed, the system presses the residual material back to the raw material tank by compressed air, then blows the filter cake dry by steam, and finally discharges the dried filter cake by compressed air blowback and mechanical vibration.

Product structure

The main body of the filter is composed of shell, filter mesh, cover structure, automatic slag discharge device, etc. It can also be customized according to the different filtration media to complete the filtration system (including the filter mainframe and filter aid stirring and mixing tanks, conveying pumps, pipelines, valves, electrical control, etc.), of which the filter mesh is composed of multi-layer stainless steel wire mesh, installed in the center of the collector pipe, it is very convenient to dismantle and clean up.

Features of the product

  • According to the requirement of filtration precision, choose different precision filter components, which can be used as coarse or fine filtration.
  • The filtration does not need consumables (such as filter paper, filter cloth), but adopts stainless steel filtration components, which is durable and consumes only a small amount of filter aid, so the filtration cost is very low;
  • Automatic dregs draining, press the button of dregs draining, the dregs draining port will be opened automatically, and the dregs can be removed automatically and conveniently, so the labor intensity can be greatly reduced;
  • The sealing ring made of Viton can be used for filtration up to 200°C;

Product Applications

Product Applicable Material Characteristics

  • Liquid phase: low or high viscosity liquids (e.g. grease, colloid).
  • Solid phase: microfine particles (above 0.1μm), viscous filtrate (e.g. fermentation liquid).

Application scope of products

  • Oil and grease industry: machine pressed gross oil filtration, burnt color oil filtration, hydrogenated oil filtration, winterized oil filtration, etc.
  • Food industry: activated carbon decolorization filtration of sugar solution such as granulated sugar, glucose, etc., clarification filtration of wine, fruit juice, refreshing beverage, etc.
  • Chemical industry: crystallization separation in petrochemical industry, inorganic chemical industry and organic chemical industry, filtration and separation of various catalysts, and decolorization filtration of chemical products.

Closed Plate Filter

Advantages of the product

Advantages of the product

  • Hermetically sealed operation: suitable for toxic, flammable or sterile materials, preventing contamination and volatilization.
  • High-efficiency filtration: large filtration area, suitable for materials with high solid content, and the filter cake can be washed.
  • Flexible adaptation: filtration area can be adjusted according to by increasing or decreasing the number of filter plates, adapting to different production scale and output demand.
  • High degree of automation: support PLC control, realize continuous production.
  • High sanitary grade: conform to GMP/FDA standard, all contact parts are made of 316L stainless steel
  • Durability: made of stainless steel and other high-quality corrosion-resistant materials, which prolongs the service life of the equipment and reduces the maintenance cost.

About the Author : Komine

Komine is a seasoned expert in the filtration industry with years of experience in providing innovative solutions for industrial and commercial filtration needs. As a key member of Yuwei Filter, he has contributed significantly to advancing filtration technologies and ensuring top-notch product quality. His expertise and dedication have made him a trusted authority in the field.

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