Automatic Filter Press

Product Details:

Additional Information:

• Delivery Time: 6 to 8 weeks

Product Details:

A Filter Press Machine in the oil industry is a vital piece of equipment used for solid-liquid separation, primarily to remove impurities, suspended solids, and sediments from crude or partially refined oils to produce a high-quality, clear oil.

The filter press operates by forcing the oil through a filter medium under high pressure, separating the liquid oil from the solid contaminants.

The machine's core is a series of stacked filter plates (or plates and frames) compressed together by a hydraulic or mechanical system, forming sealed chambers.

•  Filter Medium: A filter cloth (e.g., polyester, polypropylene, nylon) or specialized paper is placed over each plate, acting as the sieve. In some processes, a filter aid (like diatomite) may be used to enhance filtration.

   

• Plates: These are often made from polypropylene (PP), metal (like Stainless Steel for food-grade applications), or cast iron.

•  Hydraulic/Closing System: This mechanism closes and secures the filter plates to withstand the high filtration pressure without leaking.

   

1. Feeding: The crude oil, often pumped with high pressure, is introduced into the center of the press and is distributed into the filter chambers.

    

2.  Filtration: The pressure forces the oil through the filter cloth. The desired filtrate (the purified oil) passes through the cloth and is collected through discharge outlets.

    

3.  Cake Formation: The solid impurities are trapped on the surface of the filter cloth, gradually building up to form a filter residue, commonly known as a filter cake.

    

4. Discharge: Once the chambers are full or the flow rate significantly decreases, the press is opened, and the solid filter cake is removed and discarded.

Product Details:

The Isha Automatic Filter Press Machine is a piece of industrial equipment manufactured by Isha Engineering And Co. (and related entities) that specializes in solid-liquid separation across a wide range of industries, including the edible oil, chemical, pharmaceutical, and wastewater treatment sectors.

The key feature is the "Automatic" function, which significantly reduces the need for manual labor compared to semi-automatic or manual presses.

The "Automatic" designation refers to the machine's ability to automate the full filtration cycle, which is typically governed by a PLC (Programmable Logic Controller) system.

• Automatic Plate Closing: The hydraulic or mechanical system automatically closes the filter plate stack to a pre-set pressure before the filtration cycle begins, ensuring a leak-proof seal.

• Automatic Feeding: The slurry (e.g., crude oil and solids) is pumped into the press automatically. The PLC monitors pressure and flow, stopping the cycle when the cake is fully formed.

• Optional Automatic Functions: Depending on the model, the automatic cycle may also include:

  • Air Core Blow: Automatically introduces compressed air to push out residual liquid from the filter cake and pipes before discharge.

  • Automatic Cloth Washing: An optional system that sprays high-pressure water jets to clean the filter cloths after each cycle.

Product Details:

A Semi-Automatic Filter Press is a piece of industrial equipment used for solid-liquid separation in a process called pressure filtration. It represents a balance between purely manual and fully automated filter press systems.

Here is a breakdown of its key features and operation:

• Purpose: It separates solid particles from a liquid (slurry) by forcing the slurry through a filter cloth, which traps the solids (the "filter cake") and allows the clean liquid (the "filtrate") to pass through.

• Semi-Automatic Nature: The machine automates some of the most labor-intensive parts of the filtration cycle while still requiring operator intervention for other steps.

  • Automated Elements: Typically include the hydraulic closing (creating pressure on the plates), filtration pressure control, and often plate shifting (moving the plates to discharge the cake) via an electromechanical device.

Product Details:

A Filter Press Machine in a sugar refining plant is a crucial piece of equipment used for solid-liquid separation, specifically to remove unwanted solids and impurities from the sugar syrup or clarified liquor. This process is essential for achieving a clear, high-purity, and refined final sugar product.

Here is a detailed description:

• Primary Purpose: To dewater the slurry (a mixture of liquid and solids) generated during the clarification processes (like carbonation or sulphitation) to recover residual sugar and produce a dry, manageable filter cake (filter mud).

   

• Specific Use in Sugar Refining: It is used to filter various streams, including:

  •  Clarified Liquor/Syrup: Removing fine suspended solids and non-sugar components after clarification and sometimes after activated carbon decolorization.

     

  • Mud Juice: Filtering the mud that contains sugar to recover the liquid sugar, which is returned to the process.

The filter press operates as a batch-operated pressure filtration device.

1.  Slurry Introduction (Filling Phase): The sugar syrup or mud slurry is pumped under pressure into the closed chambers formed by the filter plates.

    

2.  Filtration: As the slurry enters, the liquid (filtrate—the purified sugar liquor) is forced through the filter cloth covering the plates. The solids and impurities (non-sugars) are trapped on the cloth.

    

3.  Cake Formation: The trapped solids gradually build up to form a filter cake (filter mud) within the chambers.

    

4.  Cake Squeezing (Optional, in Membrane Presses): In modern membrane filter presses, an inflatable membrane inside the plate expands, applying additional pressure to the filter cake to squeeze out residual moisture and sugar, significantly reducing sugar loss and increasing the solid content of the cake.

    

5. Cake Discharge: Once the filtration cycle is complete and the cakes are formed and dried, the press opens, and the filter cakes are discharged, often automatically, for disposal or further processing

Product Details:

A Filter Press in brewing and winemaking serves the vital role of achieving clarity and stability in the final beverages by removing suspended solids like yeast, proteins, and haze-forming particles.

While the mechanics are similar to those in sugar refining, the application and specific goals are tailored to preserving the flavor and achieving the desired visual quality of beer or wine.

Here is a detailed description of a Filter Press used in these industries:

• Primary Purpose: To polish and clarify fermented alcoholic beverages (beer, wine, cider, spirits) by separating the liquid from the lees (spent yeast, grape solids, or hop particulate) and other turbid materials.

• Goal: To achieve brilliance (visual clarity) and microbiological/physico-chemical stability before bottling or packaging, without stripping desirable flavor and aroma compounds.

• Specific Use Cases:

  • Wine: Clarifying young wines after fermentation, removing gross lees, and performing final polishing filtration before bottling.

  • Beer: Clarifying bright beer by removing yeast and particulate after fermentation and conditioning (though many craft breweries prefer centrifugation or non-filtered beer).

  • Juice/Must: Pre-clarification of grape must or fruit juice before fermentation.

The filter press used here is typically a Plate and Frame Filter Press, which offers versatility in media use.

1. Chamber Formation: The press consists of alternating plates (which collect the filtrate) and frames (which hold the filter cake/solids) separated by the filtration media.

2. Media: Unlike industrial presses using only a cloth, brewing and winemaking commonly use a filter medium called filter sheets, filter pads, or cellulose/diatomaceous earth (DE) filter aids.

   • Filter Sheets: Disposable, multi-layered sheets of cellulose, often impregnated with DE, provide specific micron retention ratings (from coarse to sterile/sub-micron).

3. Operation: The beer or wine is pumped under pressure through the frame, forcing it through the filter sheets (media) and into the plate section.

Product Details:

An Automatic Filter Press Machine in a juice clarification plant is a highly efficient, automated system designed to remove solid particles, pectin precipitates, starch, and other turbid materials from raw or enzyme-treated fruit and vegetable juices. Its main function is to achieve the necessary clarity and shelf-stability required for bottling or downstream processing.

The use of an automatic machine is essential in high-volume juice production for maximizing throughput, ensuring consistent product quality, and minimizing labor costs.

• Primary Purpose: Solid-liquid separation following initial treatment steps like enzymatic hydrolysis (pectinase treatment) or fining agents (e.g., bentonite, gelatin) to break down and aggregate colloidal particles.

• Goal: To produce a clear, bright juice (filtrate) and a dry, manageable filter cake (waste solids).

• Specific Use Cases:

  • Apple and Pear Juice: Removing the sludge and solids left after enzyme treatment and gelatin-silica sol fining.

  • Grape and Berry Juices: Clarifying musts or juices before fermentation or concentration.

  • Vegetable Juices: Separating pulp and fiber for clarified vegetable drinks.

     

Modern juice clarification relies almost exclusively on the Automatic Membrane Filter Press due to its superior dewatering capabilities and fully mechanized operation.

1. Feeding Phase: The treated, turbid juice is pumped into the press chambers until the maximum filtration pressure is reached. The clear juice (filtrate) passes through the food-grade filter cloth.

    

2. Membrane Squeezing (Key to Automation): After the cake is fully formed, pressurized air or water is injected into the flexible membrane plates. These membranes inflate, physically squeezing the filter cake.

Product Details:

The Automatic Edible Oil Purification Filter Press Machine is a highly specialized piece of equipment used in the final stages of edible oil refining (such as palm, sunflower, soybean, groundnut, or rapeseed oil). Its primary role is to achieve high purity, clarity, and stability by removing residual impurities from the oil.

This machine is critical after processes like degumming, neutralization, bleaching (or bleaching earth treatment), and winterization.

• Primary Purpose: Solid-liquid separation, specifically to remove finely suspended solids, residual bleaching earth (activated clay), spent activated carbon, and soap stock from the crude or semi-refined edible oil.

• Goal: To produce a highly polished, bright, and stable finished oil that meets consumer clarity standards and ensures prolonged shelf life.

• Specific Use Cases:

  • Bleaching Filtration: The most common application, where the press separates the oil from the spent bleaching earth, which is loaded with impurities (pigments, gums, metals).

  • Winterization Filtration: Used to remove crystallized waxes and high-melting-point triglycerides (stearins) to prevent cloudiness at low temperatures.

  • Polishing Filtration: Final removal of trace contaminants before deodorization or packaging.

Product Details:

A Semi-Automatic Filter Press in a chemical purification plant is a robust, cost-effective filtration solution designed for separating solids from liquid chemical slurries, often involving corrosive, abrasive, or temperature-sensitive media. It strikes a balance between the manual labor of a simple press and the high capital cost of a fully automatic system.

• Primary Purpose: To achieve efficient solid-liquid separation of chemical suspensions, purifying the liquid chemical product (filtrate) or recovering valuable solid materials (filter cake).

• Operating Principle: Similar to a fully automatic press, it uses pressure to force the liquid through a filter medium (cloth), trapping the solid particles (cake) in the chambers.

• Flexibility: It is widely used in plants processing a variety of chemicals, including:

  • Pigments and Dyes: Separation from mother liquor.

  • Inorganic Chemicals: Filtration of salts, metal hydroxides, and catalysts.

  • Pharmaceutical Intermediates: Separation of crystallized products.

  • Wastewater/Effluent Treatment: Dewatering chemical sludge.

Product Details:

A Filter Press Machine is an essential piece of equipment in a pigment production plant, specifically utilized in the final dewatering and washing stages. Its primary role is to separate the desired solid pigment particles from the liquid slurry (often called the "mother liquor" or wash water) after synthesis, precipitation, or crystallization.

• Primary Purpose: To dewater the pigment slurry efficiently, producing a solid pigment cake with a high dry-solids content and a clear liquid filtrate (water or solvent).

• Goal: To achieve the required purity by washing the pigment cake in situ to remove residual soluble salts, acids, or alkali that could compromise the pigment's color, stability, or end-use performance.

• Specific Use Cases:

  • Separation and washing of inorganic pigments (e.g., Titanium Dioxide, Iron Oxides, Carbon Black).

  • Separation and washing of organic pigments (e.g., Azo dyes, Phthalocyanines).

  • Recovery of valuable solvent or purification of wash water.

Due to the fine particle size and high value of most pigments, the Automatic Membrane Filter Press is the industry standard for this application.

1. Slurry Feeding: The pigment slurry is pumped into the press chambers under high pressure. The fine pigment particles are captured by the filter cloth, forming the cake, while the mother liquor drains away.

2. Cake Washing: A crucial step in pigment production. After the initial filtration, the liquid feed is stopped, and wash water or a specific solvent is injected into the press to pass through the formed pigment cake. This displaces soluble impurities, ensuring the final product meets purity standards.

3. Membrane Squeezing (Dewatering): Pressurized air or water is introduced into the flexible membrane plates, which inflate and apply high pressure (often 10–15 bar) directly to the pigment cake.

Product Details:

A Filter Press Machine used in pharmaceutical processing plants is a highly specialized piece of equipment designed for critical solid-liquid separation while adhering to the stringent regulatory requirements of the industry (e.g., cGMP – current Good Manufacturing Practices). Its function is to separate crystallized APIs (Active Pharmaceutical Ingredients), intermediates, or excipients from their mother liquors, or to clarify process liquids and sterile water.

• Primary Purpose: To dewater high-value, sensitive materials (APIs) or to clarify pharmaceutical solutions, achieving precise separation and high product yield.

• Goal: To achieve product purity, batch integrity, and complete containment of the materials, while ensuring all contact parts are easy to clean and sanitize.

• Specific Use Cases:

  • API Crystallization: Separating the desired crystalline drug product from the solvent/mother liquor after precipitation.

  • Intermediate Purification: Isolating reaction intermediates from chemical synthesis steps.

  • Sterile Filtration Preparation: Pre-filtration of liquid media before final sterile filtration.

  • Bulk Drug Manufacturing: Clarifying process streams to remove insoluble particles.