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If you are involved in industrial fluid processing, knowing the bag filter working principle is essential for optimizing your operations. But what is a bag filter? In simple terms, it is a versatile and efficient filtration system designed to remove solid particles from liquids. In this article, Yuwei Filtration will break down the bag filter working principle, its mechanism, types, and common industrial uses. What is a Bag Filter? A bag filter is a type of pressure-driven filtration device used to purify liquids by capturing unwanted contaminants. It consists of a filter housing (usually made of stainless steel, polypropylene, or carbon steel) and a removable filter bag made of felted or woven material. These systems are widely used across industries due to their simplicity, cost-effectiveness, and high efficiency. How Bag Filters Work: The Core Mechanism The bag filter working principle relies on a straightforward yet highly effective process. Contaminated liquid enters the filter housing under pressure from the inlet port. The liquid is directed into the annular space between the housing and the filter bag. As the fluid passes through the porous material of the bag, particles larger than the pore size are trapped on the inner or outer surface...

The candle filter working principle involves a sophisticated mechanism where multiple filter elements operate in parallel within a pressurized vessel. Each element consists of a rigid core surrounded by specialized filter media, creating an extensive filtration surface area. This design allows for efficient particle retention while maintaining optimal flow rates. The industrial candle filter variant typically features reinforced construction for demanding applications, ensuring durability under extreme operating conditions. Economic Considerations and Value Analysis The candle type filter price reflects its long-term value proposition rather than just initial acquisition cost. While the upfront investment might be higher than some alternatives, the total cost of ownership proves considerably lower due to several factors: Extended service intervals reducing maintenance costs Lower energy consumption through optimized flow design Reduced downtime for filter changes and cleaning Longer operational life between replacements Candle type filter replacement costs are offset by the system’s durability and reliability.  Most systems operate for extended periods without requiring major component replacements, and when maintenance is needed, the modular design allows for individual element replacement rather than entire system overhaul. Diverse Industrial Applications The candle filter uses span across multiple industries, demonstrating remarkable adaptability: Water Treatment Systems As a candle type water...

In today’s industrial landscape, efficiency, automation, and minimal downtime are more critical than ever. This is where self cleaning filtration systems come into play. These advanced systems are engineered to deliver continuous filtration with little to no manual intervention, making them ideal for a wide array of applications-from municipal water treatment to demanding industrial processes. In this article, Yuwei Filtration explores what self cleaning filtration systems are, how they work, their key benefits, and where they are most effectively used. What Are Self-Cleaning Filtration Systems? Self cleaning filtration systems are automated filtration units designed to remove solid contaminants from liquids without requiring manual cleaning or frequent shutdowns. A typical self cleaning filter utilizes an integrated cleaning mechanism-often powered by backwashing, scraping, or suction-scanning technology-to periodically clear accumulated debris from the filter element. This ensures consistent flow rates, stable pressure, and high filtration efficiency around the clock. Industries that rely on clean process water or other fluids increasingly turn to automatic self cleaning filters to improve operational reliability and reduce labor costs. How Do Self-Cleaning Filtration Systems Work? The core functionality of self cleaning filtration systems is based on intelligent design and automation. Here’s a general overview of how these systems...

When selecting a filtration solution for industrial applications, the material of the filter housing plays a critical role in performance, longevity, and total cost of ownership. Two of the most commonly used materials are SS304 and SS316 stainless steel. Understanding the key differences between SS304 vs SS316 filter systems can help you make an informed decision based on your specific operational environment, chemical exposure, and budget. In this article, Yuwei Filtration break down the properties, advantages, and ideal applications of each. Chemical Composition: The Fundamental Difference The core difference between these two stainless steel grades lies in their chemical composition. SS304 is composed of 18% chromium and 8% nickel, which gives it excellent corrosion resistance in a wide range of environments. SS316, on the other hand, contains 16% chromium, 10% nickel, and an additional 2% molybdenum. This molybdenum addition is the game-changer—it significantly enhances resistance to chlorides and other aggressive chemicals, making the debate of SS304 vs SS316 corrosion resistance a central point of consideration. Corrosion Resistance: The Molybdenum Advantage When comparing SS304 vs SS316 for industrial filtration, corrosion resistance is often the deciding factor. SS304 performs well in most standard environments, including those involving fresh water, mild acids, and...

In the world of industrial filtration, selecting the right material is paramount for ensuring longevity, corrosion resistance, and overall system reliability. Among the top choices for challenging environments is the SS 316 bag filter. This type of filter, constructed from 316 stainless steel, offers exceptional performance where other materials might fail. Whether you are in chemicals, pharmaceuticals, food and beverage, or marine applications, Knowing the benefits of a SS 316 bag filter can help you optimize your filtration process for both safety and efficiency. A SS 316 bag filter refers to a bag filter housing manufactured primarily from SUS316 stainless steel. This austenitic stainless steel is known for its excellent corrosion resistance, particularly against chlorides and other aggressive chemicals, thanks to the addition of molybdenum. This makes the SS 316 bag filter ideal for use in harsh environments where exposure to corrosive media, high temperatures, or stringent sanitary requirements is common. One of the most popular configurations is the SUS316 stainless steel multi bag filter housing. This design is engineered for high-flow applications, allowing multiple filter bags to operate within a single housing. The multi bag filter housing made from SS 316 maximizes filtration area and dirt-holding capacity, reducing change-out...

In the world of industrial filtration, bag filters play an indispensable role in ensuring fluid purity, protecting equipment, and enhancing process efficiency. Whether for water treatment, chemicals, food and beverage, pharmaceuticals, or oils, selecting the right bag filter manufacturer is critical to securing high-performance, durable, and cost-effective filtration solutions. As a trusted bag filter manufacturer, Yuwei Filtration doesn’t just supply products—they deliver system reliability, technical expertise, and custom solutions tailored to diverse operational needs. Why the Choice of Manufacturer Matters The quality of your bag filter system hinges largely on the expertise and manufacturing standards of your supplier. Reputable manufacturers combine advanced engineering, high-quality materials, and stringent quality control to produce filters that meet industry standards and perform consistently under demanding conditions. Whether you need a standard off-the-shelf product or a fully customized filtration system, partnering with an experienced bag filter manufacturer ensures you receive products that enhance operational continuity and reduce maintenance costs. Range of Products Offered by a Leading Bag Filter Manufacturer A full-service bag filter manufacturer typically offers an extensive product portfolio to serve various industries and applications. Here are some of the key products you can expect: 1.   Standard and Custom Bag Filter Housings The core...

Bag filtration equipment plays a vital role in industrial processes where liquid purity, operational efficiency, and equipment protection are critical. From water treatment to chemical processing, this type of filtration system offers a reliable and cost-effective solution for removing unwanted particles from various fluid streams. In this article, Yuwei Filtration will explore what bag filtration equipment is, how it works, its common types, and its wide range of industrial applications. What is Bag Filtration Equipment? Bag filtration equipment refers to integrated systems that use filter bags as the primary medium to capture contaminants from liquids. A typical setup includes a filter housing—often constructed from stainless steel, polypropylene, or carbon steel—and one or more reusable or disposable filter bags. This equipment is designed for simplicity, high dirt-holding capacity, and ease of maintenance, making it a popular choice across numerous industries. How Does Bag Filtration Equipment Work? The operating principle behind bag filtration equipment is straightforward. Liquid enters the filter housing under pressure and flows through the filter bag, which retains solid particles based on its micron rating. Clean fluid exits the housing, while contaminants are trapped within the bag. Once the filter bag is saturated, it can be easily replaced, minimizing...

Bag filter systems are among the most common and efficient filtration solutions used across industries such as chemical processing, water treatment, food and beverage, and pharmaceuticals. The core component—the filter housing—plays a critical role in the system’s corrosion resistance, structural strength, and service life. In particular, the stainless steel multi bag filter housing design has become the preferred choice in applications requiring high hygiene standards and corrosion resistance. What is a Multi-Bag Stainless Steel Filter Housing? A multi bag filter housing is a pressure vessel designed to hold multiple filter bags simultaneously. When constructed from stainless steel, it is referred to as a stainless steel bag filter housing, known for its excellent mechanical properties and chemical corrosion resistance. Common stainless steel grades include 304 and 316/L, providing flexibility depending on the corrosiveness of the fluid being processed. This design significantly increases flow capacity and dirt-holding ability. For instance, a 4 bag filter housing maximizes the filtration area within a compact layout, making it ideal for medium to high flow rate applications. It not only saves installation space but also reduces maintenance frequency and operational costs. Key Advantages of Stainless Steel Bag Filter Housings Corrosion Resistance & High Hygiene Standards Compared...

A bag cartridge filter is an innovative composite filtration system that ingeniously integrates a bag filter and a cartridge filter in series within a single filter housing. The liquid first undergoes coarse filtration through the bag filter and then proceeds to fine filtration via the cartridge filter, creating a two-stage purification process. This design combines the advantages of both technologies, aiming to enhance filtration efficiency, extend the service life of precision cartridges, and significantly reduce long-term operational costs. In this post, Yuwei Filtration will discuss why bag cartridge filter is an efficient composite filtration solution. Core Advantages: Bag Filter vs Cartridge Filter Knowing the value of a bag cartridge filter hinges on comparing the characteristics of the two technologies:  Bag Filter: Excels in high dirt-holding capacity, large flow rate, and low cost. It is adept at intercepting larger particles (typically 1-200 microns) but has limited precision. Cartridge Filter: Offers high filtration accuracy (up to 0.1 microns), capable of capturing fine particles. However, it has a weaker dirt-holding capacity, is prone to clogging, and requires frequent replacement. The bag cartridge filter complements both through its series design: the bag acts as the frontline, capturing most impurities and protecting the downstream cartridge...

In industrial settings where process continuity is critical, filtration systems that require frequent maintenance can become a significant bottleneck. This is where the duplex bag filter comes into play. A duplex bag filter is an ingenious solution designed to provide continuous, uninterrupted filtration, making it indispensable for applications that cannot tolerate system shutdowns. In his article, Yuwei Filtration will explore what a duplex bag filter is, its working principle, key components, and why it is a superior choice for many demanding industrial environments. What is a Duplex Bag Filter? A duplex bag filter is a type of pressure filtration system that consists of two identical filter chambers housed within a single unit. Each chamber contains its own filter bag and is equipped with a dedicated set of inlet and outlet valves. The system is engineered with a piping and valve configuration that allows fluid flow to be instantly diverted from one chamber to the other. This design enables operators to isolate one side for filter bag replacement or cleaning while the other side continues to filter the process fluid, ensuring zero downtime. Duplex Bag Filter Working Principle Knowing the duplex bag filter working principle is key to appreciating its value....

Wine filtration is a critical process in winemaking that ensures liquid clarity, stability, and extended shelf life. The wine filtration system must be scientifically selected based on wine characteristics (e.g., dry red, dry white, sweet wine), production scale, and quality requirements. An optimal filtration solution enhances product stability while maximizing preservation of sensory attributes, directly impacting market competitiveness and consumer experience. Core of Wine Filtration Goals Physical Clarification Focuses on efficient removal of visible particles (e.g., pomace, yeast lees, colloids) while minimizing damage to wine body integrity. Microbial Stabilization Requires complete inactivation/removal of contaminants (e.g., bacteria, wild yeast) to prevent uncontrolled biochemical spoilage during production, storage, and shelf life. Ensures product safety and sensory consistency without structural damage from high temperatures or chemical additives. Colloidal Stability Targets removal of colloidal substances (proteins, polysaccharides, polyphenols) to prevent chilling haze (<4°C), oxidative precipitation, or flocculation during storage/transport, ensuring long-term clarity. Flavor Protection Preserves the wine’s original sensory profile during clarification and stabilization: Aroma Integrity: Prevents loss of volatile esters (e.g., isoamyl acetate) and terpenes (e.g., linalool). Polyphenol Retention: Avoids adsorption of tannins/anthocyanins by filter media (e.g., activated carbon). Acidity & Freshness: Controls oxidation (DO ≤3 mg/L) and thermal damage (≤18°C). Texture Continuity:...

Sugar syrup filtration process is an extremely critical step in sugar cane production. Its purpose is to effectively separate the precipitated solids formed after the clarification of cane juice, thereby obtaining purified sugar liquid (clarified juice) for subsequent evaporation and crystallization. Yuwei Filtration provide highly reliable solutions for the filtration efficiency directly impacts the purity, color value, and yield of the final white sugar. Sugar manufacturing process step by step flow includes: Juice Extraction – Clarification and Purification – Evaporation and Concentration – Crystallization – Drying and Packaging. Key Stages of the Sugar Filtration Process Filtration occurs primarily at the following stages throughout the sugar manufacturing process: Rough Filtration of Mixed Juice Purpose: To remove large solid impurities (such as bagacillo, cane fiber, sand, and soil) carried in the mixed juice from the pressing plant, protecting downstream equipment from blockage. Equipment: Vibrating screens are typically used. Settling of Neutralized Juice and Mud Juice Filtration Process: After undergoing heating and chemical treatment steps like lime addition (neutralization) during clarification, non-sugar impurities coagulate to form flocculent precipitates. The treated juice enters a settler where the heavier flocs settle to the bottom to form thick “mud juice,” while the clarified upper layer (clear juice)...

The century-long evolution of commercial beer filtration systems is fundamentally characterized by the dual advancement in separation precision and production efficiency within beer filtration technology. Each technological leap has consistently addressed the core demands of industrial beer production. From 19th-century manual cotton-pad filtration to 21st-century AI-driven systems, every technological iteration has significantly enhanced beer clarity, flavor stability, and production sustainability. In this post, Yuwei Filtration will discuss core evolution of commercial beer filtration systems. Three Major Technological Epochs  1. Diatomite Era (1886-1990s)  Core breakthrough: Mechanical pre-coating technology replaced cotton pads/wood chips, increasing transmittance from 70% to 95%, resolving early inefficiencies and beer turbidity.  Landmark equipment: Horizontal pressure leaf filters (1957), candle filters (1968), achieving capacities >100 hL/h, fueling a >300% surge in global beer output.  2. Membrane Filtration Revolution (1990s-2010s)  Pivotal innovations: Cross-flow membrane systems (1993) solved diatomite waste issues, reducing solid waste per line from tons to kilograms; 45μm sterile cartridges (1998) replaced pasteurization, boosting draft beer market share from 5% to 35%. Capacity milestone: 400 hL/h integrated membrane lines (2005), slashing product loss from 1.8% to 0.8%, saving >$10 million annually in raw materials.  3. Intelligent Diatomite-Free Era (2010s–Present)  Green transformation: Centrifugal pre-filtration + membrane polishing eliminated diatomite...

Core Function: Reduces fluid sludge with 95%-99% moisture content to solid cakes at 60%-80% moisture through mechanical pressure, achieving sludge reduction, harmlessness, and resource recovery. For municipal wastewater sludge dewatering, below is a technical analysis of four mainstream sludge filter press types: Plate and Frame Filter Press Applicability: Ideal for small municipal plants (<50 tons/day) with flexible moisture requirements. Cost-effective for high-organic sludge (e.g., domestic sewage). Working Principle: Hydraulic system compresses plates/frames to form chambers. Sludge pumped in at 0.6-0.8 MPa. Free water drains through filter cloth. Manual scraping of cakes. Filter Press Plates: Material: Glass fiber-reinforced polypropylene (PP).Thickness: 60-80 mm, drainage grooves. Pressure resistance: 0.8 MPa.Lifespan: 3-5 years.Prone to clogging; requires frequent cleaning. Chamber Filter Press Applicability: Primary choice for mid-sized plants(100-500 tons/day). Automates discharge, handles fibrous sludge (e.g., landfill leachate). Output moisture: 70%-75%. Working Principle: Automatic plate compression. Sludge pumped at 1.2 MPa. Compressed air blows residual liquid. Vibrational auto-discharge. Filter Press Plates: Steel core + natural rubber coating.Central feed port, corrosion-resistant.Pressure resistance: 1.6 MPa.Lifespan: 5-8 years. Membrane Squeeze Filter Press Applicability: Optimal for deep dewatering(moisture ≤60%). Meets landfill/incineration standards. Ideal for heavy metal sludge (e.g., electroplating) or resource recovery (fertilizer/fuel). Working Principle: Feed filtration(0.6-1.0 MPa): preliminary dewatering...

In the edible oil refining process, filter presses are key equipment for ensuring the purity and economic value of oil products. In view of the physical properties of different oils (such as wax content, acid value, viscosity, etc.), the industry mainly adopts five types of special filter press machine. In this post, Yuwei Filtration will systematically analyze their technical key points: Plate and Frame Filter Press Applicability: ★★★☆☆ Core Scenario: Low-temperature dewaxing of high-wax oils (rice bran oil/sunflower oil) Working Principle: Filter Pressing: Hydraulic cylinder locks filter plates and frames to form sealed chambers Low-Temperature Feeding: Pump 5-10°C crude oil into chambers to crystallize wax Filtration: 20-50μm polypropylene filter cloth traps wax crystals and solids Manual Discharge: Scrape high-purity wax cake (cosmetic raw material) after releasing plates Price Reference: Basic manual model (20m²): ¥80,000-150,000 Upgrade: Filter frame heater (anti-wax clogging): +¥30,000 Value Point: Complete recovery of high-value wax Stainless Steel Plate and Frame Filter Press Applicability: ★★★★☆ Core Scenario: Contamination-free filtration of pharmaceutical-grade oils (fish oil/MCT oil) Working Principle: CIP Pre-cleaning: Circulate 80°C food-grade alkali for sterilization Dual-Stage Filtration: Primary: 316L metal screen (50μm) intercepts large particles Secondary: Food-grade filter paper (10μm) adsorbs colloids Nitrogen Shielding: Maintain <0.5% oxygen in...

As a core solid-liquid separation device, various types of filter press have evolved to address different material properties, application scenarios, and production requirements. The structural design and operational characteristics of each filter press machine must match specific industrial conditions. This article, Yuwei Filtration will discuss the structural and functional nuances of these filter press machines, offering insights into their industrial compatibility. Basic Structural Types of Filter Press 1. Chamber Filter Press Adopts sealed filter chamber design with evenly distributed filtration pressure. Suitable for scenarios demanding high filter cake integrity, such as gentle separation of antibiotic crystals in pharmaceuticals or precise capture of nanoparticle suspensions in electronic materials. 2. Membrane Filter Press Integrates elastic diaphragms for secondary compression. Effectiveness depends on material compressibility. Ideal for municipal wastewater plant sludge, plant protein extracts, and pharmaceutical mycelium. Among types of filter press, this variant significantly reduces moisture content through micro-pore compression. 3. Plate and Frame Filter Press Forms residue spaces through alternating plates/frames. Handles high-solid-content materials effectively in municipal sludge dewatering and chemical resin processing. Special Material Filter Presses 1. Cast Iron Filter Press Withstands >120°C temperatures for molten material separation (e.g., coal tar filtration, zinc smelting). 2. PP Coating Filter Press Features...

A pressure leaf filter is a widely used solid-liquid separation device in industry, mainly used for efficiently separating solid particles from liquids. Its core feature is that it works under pressure and uses movable leaf-shaped filter elements for filtration and slag discharge. In this article, Yuwei Filtration will explore the pressure leaf filter in depth, from its core mechanisms to the unique advantages of each type. Types of Pressure Leaf Filters Pressure leaf filters are mainly divided into two basic types according to their structure: vertical and horizontal. Vertical Pressure Leaf Filter  Structural features:  The tank body is a vertical cylinder (vertical type).  The filter leaves are vertically suspended in the tank, usually fixed on the top liquid collection pipe.  The slag discharge port is located at the bottom of the tank (equipped with a quick-opening bottom cover).  Typical applications: non – stringent scenarios such as chemical industry, food industry, and general pharmaceutical industry. Horizontal Pressure Leaf Filter  Structural features:  The tank body is a horizontal cylinder (horizontal type).  The leaves are installed horizontally or slightly inclined, fixed on the liquid collection pipe running through the tank.  The slag discharge port is located on the side or bottom (controlled by...

The filter press machine operates on a fundamental filter press working principle: applying pressure to separate solids from liquids through filter media. This versatile mechanism enables diverse filter press applications across global industries, adapting to varying material properties and operational demands. In this post, Yuwei Filtration will discuss its versatility, efficiency, and critical role across industries. Core Filter Press Application in Wastewater Treatment Municipal Wastewater Plants: Dewatering organic sludge into transportable filter cakes, significantly reducing volume and disposal complexity. Industrial Effluent Management: Treating sludge from electroplating, pharmaceuticals, and textiles for regulatory compliance or resource recovery. Dredging & Remediation: Processing river/lake sediments into stable cakes for safer handling and landfill reduction. Landfill Leachate: Concentrating high-pollutant liquids prior to advanced treatment. High-value Filter Press in Chemical Manufacturing Inorganic Products: Filtering titanium dioxide pigments, catalysts, and fillers with precise solid retention. Organic Synthesis: Isolating dye intermediates and polymer precursors with counter-current washing capabilities. (Note: Filter press manufacturers like Yuwei Filtration provide corrosion-resistant designs for aggressive chemistries.) Fertilizer Production: Separating phosphogypsum from process streams in phosphate plants. Mining & Metallurgy Mineral Concentration: Producing low-moisture metal concentrates for smelting while enabling dry tailing stacking. Metal Recovery: Capturing precious metals from leach residues via pressure-enhanced filtration....

The working principle of a filter press revolves around the creation of sealed filter chambers to separate solids from liquids. By pressing filter plates and frames together, the system ensures effective filtration, producing dry filter cakes and clear filtrates. This technology plays a crucial role in resource recovery and pollution control across various industries. In this post, Yuwei Filtration will discuss filter press working principle. What is a filter press A filter press is an industrial equipment that realizes solid-liquid separation by means of mechanical pressure. Its core is to form a sealed filter chamber through the combination of filter plates, filter frames, filter cloths and other components, and use the pressure difference to promote the separation of liquid and solid in the suspension. In terms of structure, a filter press is mainly composed of filter plates, filter frames, filter cloths, and a pressing device. The surface of the filter plate is provided with liquid guide grooves, the filter cloth covers the filter plate to act as a filter medium, the filter frame serves as a space for accommodating filter cakes, and the pressing device presses the plates and frames through hydraulic or manual means to ensure the tightness of...

Filter press equipment is an important device used for solid-liquid separation in the industrial field. Its design is exquisite, consisting of key components such as filter plates, filter frames, filter cloths, and pressing devices. Different types of filter press equipment, such as plate-and-frame, chamber, and membrane types, have different focuses in structure and function, and can be selected according to the characteristics of the materials to be processed and production needs. It is widely used in chemical industry, mining, environmental protection and other industries, providing efficient solutions for material purification, separation and dehydration. Here, Yuwei Filtration will explore how does a filter press work. Filter Press Working Principle The working principle of the filter press is essentially to force solid-liquid separation through mechanical pressure: in a sealed chamber, the liquid in the high-pressure suspension passes through the filter cloth or filter screen to become filtrate, while the solid particles are intercepted to form filter cakes; as the filter cake thickens, it itself is transformed into a precision filter layer to improve separation accuracy. Active interventions such as membrane pressing or gas back-blowing can further squeeze out bound water, and finally obtain high-dryness filter cakes and clear filtrate. How Does a...

Filter press machines are a critical investment for industries requiring efficient filtration solutions, but their pricing can vary significantly. As a professional filter press machine supplier, this Yuwei Filtration article explores the two primary factors affecting costs: the machine’s technical characteristics and the additional expenses tied to export logistics and installation, offering insights into how these elements shape the overall price. Equipment’s Own Characteristics: Core Cost Composition 1.      Type Differences Basic chamber filter presses have a relatively simple structure and lower cost. Plate-and-frame filter presses are slightly more expensive due to their combined structure. Diaphragm filter presses, equipped with expandable diaphragm filter plates and independent pressing medium (water/gas) supply and control systems, have significantly increased technical complexity and manufacturing costs. 2.      Scale Effect Filtration area is a core indicator. The larger the area, the more filter plates are needed, the frame structure becomes more massive and sturdy, raw material consumption surges, and the price rises in a stepwise manner. Meanwhile, higher designed working pressure requires stronger frames, larger cylinders, and filter plates with higher pressure resistance, leading to increased costs. The volume of the filter chamber also directly affects the equipment size and single processing capacity. 3.      Filter Plate Material:...

The design, selection, configuration, and operation of a beer filtration system have a decisive impact on the filtration effect, directly related to the final quality, stability, flavor, production cost, and efficiency of beer. The system design varies depending on the different purposes and scales of filtration. In this post, Yuwei Filtration will explore what you need to know about the beer filtration system. Purposes of Beer Filtration Clarity: Remove visible suspended solids to meet the expected clarity standards. Biological stability: Remove most yeast cells (reduced to <5 cells/100ml) and potential spoilage bacteria to prevent in-bottle re-fermentation or deterioration. Non-biological stability (colloidal stability): Reduce high-molecular-weight proteins, polyphenols, and their complexes that may cause cold turbidity or permanent turbidity. Flavor and taste: Remove particulate matter that affects flavor, improve the purity of taste, and avoid introducing bad flavors or excessively losing beneficial substances. Carbon dioxide content: Minimize CO₂ loss to maintain the beer’s bite. Differences Between Different Commercial Beer Filtration Systems Mainstream commercial beer filtration systems are divided into two categories: standard processes for large breweries (focusing on cost and stability) and draft beer processes （The core requirements are flavor retention and biological stability.). Standard Filtration Process for Large Breweries Process chain...

The plate and frame filter press is a batch filtration device that achieves solid-liquid separation through mechanical pressure. It consists of alternately arranged filter plates, filter frames, and filter cloths, forming a sealed filter chamber. Thanks to its unique mechanical structure and separation mechanism design, it can separate suspensions into high-dryness filter cakes and clear filtrate under high pressure. In this post, YW-well Filter will discuss everything about the plate and frame filter press. Plate and Frame Filter Press structure  Core Structural Components Filter Plate Structural Features: The surface contains precisely calculated concave and convex patterns, forming a liquid-guiding groove system. Core Functions: The convex parts support the filter cloth to prevent collapse, and the concave grooves guide the rapid collection and discharge of filtrate; ensure the utilization rate of filtration area and the flow efficiency of filtrate, and are the basis for continuous filtration. Filter Frame Structural Features: A hollow frame whose volume is determined by its thickness; a suspension inlet is set at the center. Core Functions: Serve as a filter cake carrying space, and the greater the thickness, the stronger the single processing capacity; enable the material liquid to diffuse under pressure through the central inlet, contact...

The 316L stainless steel bag filter features an ultra-low carbon molybdenum-enriched composition as its core characteristic. It withstands strongly acidic/alkaline media across pH 1-14 (including hydrochloric acid, sulfuric acid, sodium hydroxide, etc.), with an annual corrosion rate of <0.001 mm in 5% HCl solution. Its chloride stress corrosion cracking resistance is 3 times higher than 304 stainless steel, enabling direct use in high-chloride environments such as seawater and electroplating solutions . Yuwei Filter Equipment the material withstands temperatures up to 220°C, supporting >1,000 cycles of in-place sterilization (SIP) with 132°C saturated steam to meet sterile processing requirements. The Ra ≤0.8 μm electropolished surface reduces microbial adhesion risks by 60%. Typical Applications Highly corrosive media Metal particle recovery from acid wash waste (pH=1-2) and PCB etching solutions (containing copper ions). High-salinity environments Seawater desalination pretreatment, cooling water filtration in coastal power plants (Cl⁻ >10,000 ppm). High-temperature sterilization Final polishing filtration of water for injection (WFI) in biopharma, sterilization of cell culture media. Key Advantages of 316L Stainless Steel Bag Filter Housing Hygiene Compliance Constructed with 316L stainless steel material and electropolished surface treatment (Ra≤0.8μm) to minimize microbial adhesion risks. Certified under FDA 21 CFR 177.1520 for food contact materials, complying with...

A filter press machine plays a vital role in filter press water treatment by effectively handling the challenge of extracting water from sludge, transforming it into solid, manageable filter cakes. But how does a filter press work, and what makes it indispensable? This post from YW-wellfilter explores the filter press working principle, deciphers the filter press diagram, and highlights the advantages of different types of filter press systems. What is Filter Press Machine The filter press is an extremely important solid-liquid separation equipment in Filter Press Water Treatment. Its core function is to separate suspended solids in water through physical pressing and filtration, thereby obtaining solid filter cakes with low water content and relatively clear filtrate. In the process of water treatment, a large amount of sludge is generated. This sludge has high water content, large volume, and is difficult to transport, dispose of and recycle. However, Filter Press Water Treatment can remove most of the water from this thin sludge, forming mud cakes with extremely low water content, which greatly reduces the volume and weight. Filter Press Water Treatment is widely used in municipal sewage treatment plants, industrial wastewater treatment, waterworks, river and lake dredging sludge dewatering and other fields. The use of...

The filter press is a widely used piece of equipment in industries such as chemical manufacturing, food processing, mining, and wastewater treatment. It is designed for solid-liquid separation and is known for its efficiency and ease of operation. In this article, YW-wellfilter will explore the filter press working principle, explain how the machine works, and break down the plate and frame filter press working principle with membranes and key insights. What Is a Filter Press? A filter press machine is a type of mechanical equipment used to dewater slurry, separating solids from liquids. It operates in a batch process and is particularly effective when the end goal is to recover the solid material or purify the liquid. Filter Press Working Principle At the core of its function, the filter press working principle revolves around pressure filtration. Here’s how it works: Slurry Feeding: A pump feeds the slurry (a mixture of solids and liquids) into the filter press. Filtration: The slurry is pushed into a series of filter plates lined with filter cloth. The liquid (filtrate) passes through the cloth and exits the press, while the solids are retained, forming a filter cake. Cake Formation: Over time, the retained solids accumulate...

Bag filter systems achieve a trifecta of efficiency, cost-effectiveness, and continuity in complex industrial environments through modular design, intelligent control, and operational adaptability. Their core value lies in upgrading standalone filtration units into comprehensive particulate control networks via systematic engineering solutions, establishing themselves as indispensable foundational infrastructure—particularly in demanding sectors such as water treatment, pharmaceuticals, and chemical processing. In this post, YW-well Filter will discuss the work principles, types and applications of bag filter systems. What is Bag Filter A bag filter is a pressure-type filtration device that uses a filter bag as the filtration medium, primarily designed to remove solid impurities from liquids. Its core component is a replaceable filter bag. Due to its simple structure, ease of operation, low equipment cost, minimal maintenance expenses, and broad applicability, bag filters play an irreplaceable role in pre-treatment, intermediate protection, and simple final filtration scenarios. Particularly in small-to-medium flow rates, low-to-medium precision requirements, and non-continuous operation conditions, their comprehensive efficiency significantly surpasses other filtration equipment. How Bag Filter Works 1. Filtration Stage  Fluid Inlet: Liquid or gas enters through the filter inlet and is uniformly distributed via internal flow-guiding structures. Impurity Retention: Under pressure, the fluid passes through the filter bag,...

Filtration Chamber (Shell) Designed as a horizontal cylindrical structure, made of stainless steel or carbon steel (with anti-corrosion lining). Both ends of the shell are equipped with quick-open flanges or hydraulic locking devices for easy installation, removal, and cleaning of filter leaves. Filter Leaf Assembly  Consists of multiple vertically or horizontally arranged filter leaves, with filter cloth covering the surface. The filter leaves have a hollow internal structure connected to a liquid collection pipe for filtrate discharge. Pressurization System  The filtration chamber is pressurized via a feed pump or compressed air to force liquid through the filter leaves, while solids are retained to form a filter cake. Discharge System  The filter cake is detached from the filter leaves using vibration devices, reverse air blowing, or scrapers, and discharged through the bottom outlet. Control System Automated models feature PLC control to regulate pressure, discharge cycles, and cleaning processes. Working Principle of the horizontal pressure leaf filter Feed Pressurization: The slurry is pumped into the sealed filtration chamber, where liquid passes through the filter leaves under pressure, and solids are retained on the surface. Filter Cake Formation: Solids accumulate on the filter leaves, forming a cake. As resistance increases, pressure is maintained...

Vertical leaf filters are primarily suitable for precision filtration of high-temperature, corrosive liquids, especially in applications requiring explosion-proof containment and residue recovery. Typical applications include: Molten sulfur Hot oils/fats Aluminum sulfate Bleaching solutions Lubricant additives Catalyst recovery Dye intermediate recovery Structure of Vertical Leaf Filter 1. Pressure Vessel System Vertical Tank: Cylindrical vessel (design pressure ≤0MPa), top quick-opening cover (hydraulic-driven) Elliptical Head: Bottom conical structure with rubber/PTFE anti-corrosion lining 2. Filtration Unit Vertical Leaf Assembly: Multi-layer stainless steel frame (single leaf filtration area: 1-5 m²) Filter Leaf Structure: Support mesh + Fine filter mesh + Protective mesh Liquid Collection Manifold: Core fluid transfer component 3. Residue Discharge System Vibration Motor: Core driver for residue discharge Gas Backflush Valve: Compressed air (0.5MPa) reverse pulse cleaning to reduce cake moisture Pneumatic Bottom Valve: Large-diameter discharge valve 4. Auxiliary Systems CIP Spray Ball: Top-mounted rotary spray head for hot alkali solution cleaning Differential Pressure Sensor: Real-time monitoring of filter clogging Vertical pressure leaf filter working principle Operates based on pressure-driven cake-layer filtration in three stages: 1. Filtration Stage Pressurized Feeding: Suspension pumped (0.3-0.6MPa) into sealed tank, permeating vertical filter leaves (pore size: 1-100μm). Cake Formation: Solids accumulate on leaf surfaces forming a rigid...

In this entry, Yu-Wellfilter explains the bag filters are widely utilized in various stages of water treatment due to their efficiency, cost-effectiveness, and ease of maintenance.  They primarily remove particulates, suspended solids, sediment, colloids, and even some microorganisms.  The key stages where bag filters for water treatment are commonly applied include: Pretreatment (Inlet Protection): Purpose: Protect downstream sensitive equipment (e.g., membrane systems, ion exchange resins, UV disinfection units, precision instruments) from damage or clogging by large particles. Applications: Inlet protection for Reverse Osmosis (RO)/Nanofiltration (NF)/Ultrafiltration (UF) systems: Used as a security/safety filter to remove particles that could scratch or foul membrane surfaces (e.g., sand, rust, activated carbon fines). Typically use finer filter bags (e.g., 1-25 micron rating). Inlet protection for Ion Exchange systems: Prevent resin contamination or blockage by particulates. Preliminary filtration of raw water/surface water/groundwater: Remove silt, algae, suspended solids, etc., as the first step before further treatment. Intermediate Treatment (Process Assurance): Purpose: Remove particles or precipitates generated during specific process steps to ensure the smooth operation of subsequent stages or final effluent quality. Applications: After Coagulation/Flocculation/Sedimentation/Clarification: Capture fine floc or unsettled coagulants. Filter bag ratings are often coarser here (e.g., 20-100 micron). After Sand Filtration/Multi-Media Filtration (MMF): Act...