![\"Rubber](\"https:\/\/www.sungda.com\/wp-content\/uploads\/2014\/05\/other-customers-3M-wide-belt1.jpg\")
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Rubber filter conveyor belts (Max.width 5500mm) are also called vacuum rubber filter belts<\/strong><\/span>, filter belts, drainage belt, they are used on horizontal belt vacuum filter((HBVF) for dewatering work and cake washing.<\/p>\n Rubber filter conveyor belts are divided into ordinary filter conveyor belts, heat-resistant rubber filter conveyor belts, oil-resistant rubber filter belts, acid and alkali-resistant filter belts and other types of rubber filter belt products.<\/p>\n SUNGDA produces dewatering horizontal vacuum filter belt<\/strong><\/span> & drainage belts in specially designed molds which form the drainage grooves, lips, and center ribs. Molding the entire shape of the drainage belt allows us to tightly control belt straightness and dimension. In vacuum filtration, uniform product is obtained by precise construction. Our goal is uniform construction to ensure properly centered drainage holes which allow a consistent application of vacuum. The symmetric drainage channels on our belts result in a consistent hydraulic and pneumatic capacity and provide an unmatched amount of open area on a drainage belt top surface.<\/p>\n In addition, the heat and high temperature resistant horizontal vacuum filter conveyor belt<\/strong><\/span> is also an advantage over our peers. For filtering high temperature materials, 80 \u2103 ~105 \u2103. The cover rubber is made of EPDM rubber material with excellent heat resistance and aging resistance; the belt carcass is made of high-strength polyester fabric, and heat-resistant glass cloth can be laid between the cover rubber and the carcass layer; The effect of high temperature and filtrate on the framework material. So that our filter belt can adapt to work in high temperature environment, especially the filtration of large aluminum plants.<\/p>\n 1. Acid and alkali resistant horizontal vacuum filter conveyor belt:<\/strong> 2. Heat-resistant horizontal vacuum filter conveyor belt:<\/strong> 3. Oil-resistant horizontal vacuum filter conveyor belt:<\/strong> 4. Cold-resistant horizontal vacuum filter conveyor belt:<\/strong> \u00a0<\/p>\n \u00a0SUNGDA Conveyor Belt Vulcanization Workshop<\/strong><\/p>\n \u00a0<\/p>\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n 1.What is the fundamental operating principle of a Horizontal Vacuum Belt Filter (HVBF)? <\/strong><\/p>\n\n\n\n A Horizontal Vacuum Belt Filter (HVBF) is a continuous, top-feed solid-liquid separation system that utilizes a combination of vacuum pressure and gravity to dewater slurries.<\/p>\n\n\n\n The operation follows a continuous horizontal process loop: Slurry Feed & Gravity Drainage: The slurry is uniformly distributed onto an endless filtering cloth supported by a heavy-duty, grooved rubber carrier belt. Initial gravity drainage begins immediately at the feed box. Vacuum Filtration & Dewatering: As the rubber belt moves horizontally over a stationary central vacuum box, negative pressure (40 kPa ~ 80 kPa) draws mother liquor through the drainage holes in the belt and into vacuum filtrate receivers. Cake Washing: Multi-stage counter-current or co-current wash headers apply wash liquor onto the forming filter cake to displace impurities before final dewatering. Cake Discharge & Cloth Washing: At the discharge pulley, the filter cloth separates from the main carrier belt, passes over a small-radius discharge roller to drop the dry cake, and undergoes continuous high-pressure water spray cleaning on the return path to prevent blinding.<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n 2.What are the core industrial advantages of HVBFs over pressure leaf filters, filter presses, and rotary vacuum drum filters? <\/strong><\/p>\n\n\n\n Horizontal Vacuum Belt Filters excel in applications requiring high throughput, thorough cake washing, and continuous automated operation:<\/p>\n\n\n\n Technology Performance Comparison:<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n 3.How does the Rubber Carrier Belt (Drainage Belt) function, and how are drainage grooves engineered? <\/strong><\/p>\n\n\n\n The rubber carrier belt is the structural and hydraulic backbone of an HVBF system. It supports the tensile load, transports the filter cloth, and routes filtrate to the central vacuum source.<\/p>\n\n\n\n Transverse Drainage Grooves: The top surface of the belt features precision-molded transverse grooves that collect filtrate beneath the cloth and direct it toward a row of central drainage holes. Central Vacuum Slots: Down the centerline of the belt, through-holes align continuously with the narrow longitudinal slot of the stationary vacuum box underneath. Carrying Capacity & Carcass Design: Rubber carrier belts are thick (25 mm ~ 50 mm) and reinforced with multi-ply polyester\/nylon (EP) or aramid carcasses. They are formulated using specialized elastomers based on chemical exposure:<\/p>\n\n\n\n Rubber Compound Selection Guide:<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n 4.What is the function of Wear Belts (Slide Strips), and how is friction managed at the Vacuum Box seal? <\/strong><\/p>\n\n\n\n A critical engineering challenge in HVBF design is managing the continuous friction and wear between the heavy, moving rubber carrier belt and the stationary vacuum box underneath.<\/p>\n\n\n\n To prevent destructive rubber-on-steel friction, two sacrificial, low-friction Wear Belts (Slide Strips) made of Ultra-High Molecular Weight Polyethylene (UHMW-PE) or PTFE are positioned between the carrier belt margins and the vacuum box top seal. Water Injection Seal: Continuous lubricating water is injected directly between the wear strips and the rubber belt underside. This water creates a hydrodynamic liquid seal that prevents atmospheric air leakage into the vacuum system while reducing friction coefficients to \u2264 0.15. Sacrificial Maintenance Component: The synthetic wear strips absorb the sliding friction. During routine overhauls, these inexpensive strips are replaced, protecting the primary rubber carrier belt from mechanical degradation.<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n 5.How do I select the right Filter Cloth material, weave, and permeability for my slurry?<\/strong><\/p>\n\n\n\n Filter cloth selection dictates filtration clarity, cake discharge efficiency, and resistance to blinding. The cloth must handle chemical corrosion, mechanical flexing over rollers, and abrasive slurry friction.<\/p>\n\n\n\n Filter Cloth Material Selection Parameters:<\/p>\n\n\n\n Air Permeability Selection: Permeability is measured in L\/dm\u00b2\/min at 200 Pa pressure drop. Fine precipitate slurries (<10 \u03bcm): Select low permeability (5 ~ 25 L\/dm\u00b2\/min) double-weave monofilament\/multifilament fabrics. Fast-draining coarse mineral slurries (>100 \u03bcm): Select high permeability (100 ~ 300+ L\/dm\u00b2\/min) heavy monofilament weaves to maximize hydraulic throughput.<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n 6.How is Cake Washing optimized on a Horizontal Vacuum Belt Filter (Co-Current vs. Counter-Current)? <\/strong><\/p>\n\n\n\n Because the filter cake forms horizontally and travels linearly without inversion, HVBFs offer true displacement cake washing with minimal wash fluid volume.<\/p>\n\n\n\n Washing Configurations: Co-Current Washing: Fresh wash liquor is sprayed onto the cake at multiple points along the belt progression. Used when wash fluid availability is high and single-pass washing is sufficient. Counter-Current Washing: Fresh, clean wash water is applied only at the final wash zone near the cake discharge. The resulting weak filtrate is collected in a dedicated receiver and pumped backward to serve as the wash fluid for the preceding wash zone.<\/p>\n\n\n\n Counter-Current Wash Efficiency Advantage:<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n 7.What causes Filter Cloth Tracking \/ Alignment errors, and how are automatic tracking systems designed?<\/strong> <\/p>\n\n\n\n During operation, non-uniform cake thickness, uneven wash spray impact, or misaligned roll shafts can cause the endless filter cloth to drift laterally off-center toward the drive or tail pulley edges.<\/p>\n\n\n\n Automatic Cloth Tracking Mechanisms: Pneumatic \/ Hydraulic Steering Rollers: A dedicated steering roller with a pivoting center bearing is placed on the return cloth strand. Edge Detection Sensors: Mechanical edge guide palms or non-contact ultrasonic \/ optical sensors continuously monitor the cloth edge position. Closed-Loop Correction: When the cloth drifts laterally past a set tolerance (\u00b110 mm), the sensor signals a pneumatic actuator to tilt one end of the steering roller. This changes the cloth tension gradient across its width, steering the cloth smoothly back to the central tracking position.<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n 8.How do I calculate the Filtration Area (A) and Active Vacuum Length (Lv) for an HVBF? <\/strong><\/p>\n\n\n\n Sizing an HVBF requires determining the active vacuum belt surface area (A) based on the laboratory-tested specific cake production rate (Qs, measured in kg\/m\u00b2\/h dry solids).<\/p>\n\n\n\n A = mdry<\/sub> \/ Qs <\/sub><\/p>\n\n\n\n (Where m_dry is the required dry cake production rate in kg\/h).<\/p>\n\n\n\n Active Vacuum Length (Lv) and Belt Speed Calculation: The total belt width (B) and active vacuum length (Lv) dictate the total active area (A = B \u00d7 Lv).<\/p>\n\n\n\n Lv = vbelt<\/sub> \u00d7 (tform<\/sub> + twash<\/sub> + tdry<\/sub>) (Where vbelt<\/sub> is linear belt speed in m\/min, and t represents the required residence time in minutes for cake formation, washing, and final dewatering).<\/p>\n\n\n\n Operational Tuning: Adjusting the variable frequency drive (VFD) on the main belt motor allows operators to match vbelt<\/sub> to real-time slurry density changes, ensuring optimal cake formation before the wash zone.<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n 9.What causes Filter Cloth Blinding, and how does the Continuous Cloth Wash System prevent it? <\/strong><\/p>\n\n\n\n Cloth blinding occurs when fine particles lodge within the textile pores (mechanical blinding) or when chemical salts crystallize inside the weave (chemical blinding), severely reducing filtrate throughput.<\/p>\n\n\n\n To maintain continuous permeability, HVBF systems incorporate a Continuous Cloth Wash Zone on the return strand after cake discharge: High-Pressure Spray Headers: Dual spray bars blast high-pressure water (4 bar ~ 10 bar) against both the cake-side and roller-side of the cloth. Needle-Jet Spray Nozzles: High-impact fan or needle nozzles dislodge trapped particles before the cloth returns to the slurry feed zone. Chemical Backwashing: For scaling slurries (e.g., gypsum in phosphoric acid plants), periodic inline acid or alkaline wash sprays are added to the spray headers to dissolve salt precipitates without stopping the filter.<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n 10.What are the critical maintenance protocols for protecting the Rubber Carrier Belt and Vacuum Box seals? <\/strong><\/p>\n\n\n\n The rubber carrier belt and vacuum system represent the largest capital replacement costs on an HVBF. Maintaining these components requires rigorous preventive maintenance: Vacuum Box Deck Seal Inspection: Inspect the UHMW-PE wear strips and rubber deck seals weekly for uneven groove wear or scoring. Worn seals allow atmospheric air bypass, reducing vacuum efficiency and overloading vacuum pumps. Seal Lubrication Water Verification: Ensure continuous, debris-free seal water flow to the wear strips. Running the carrier belt without seal water for even a few minutes causes rapid frictional heating, melting the UHMW-PE strips and scorching the rubber belt underside. Belt Centerline & Hole Alignment: Periodically verify that the drainage holes along the rubber belt centerline align accurately with the vacuum box slot. Lateral belt mistracking forces drainage holes over solid deck rubber, blinding filtration capacity. Drainage Hole Clearing: Inspect transverse grooves and belt drainage holes during shutdowns. Accumulation of hardened cake solids inside the grooves restricts filtrate flow and causes localized stress concentration across the belt carcass.<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" The article offers comprehensive information on horizontal vacuum filter belts, elucidating their design, structure, and versatile applications. Horizontal vacuum filter belts are specifically engineered for use in filtration processes, ensuring efficient solid-liquid separation in industries like mining, chemical processing, and wastewater treatment. The site showcases various types of vacuum filter belts, designed to meet specific industry requirements and filtration challenges. Furthermore, it provides detailed insights into the manufacturing and installation processes, ensuring optimal performance and longevity. With readily available customer support and contact information, this resource serves as a valuable guide for selecting and utilizing horizontal vacuum filter belts in diverse filtration applications.<\/p>\n","protected":false},"author":1,"featured_media":239,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,17],"tags":[513,492,512,493,510,494,511,495,496,497,507,498,508,499,509,500,501,432,506,145,144,141,143,62,491,67,68,261,142,490],"class_list":["post-38","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conveyor-products","category-underground-conveyor-belt","tag-2300mm-width-conveyor-belt","tag-2400mm-width-belt","tag-2500mm-width-conveyor-belt","tag-2600mm-width-conveyor-belt","tag-2700mm-width-conveyor-belt","tag-2800mm-width-conveyor-belt","tag-2900mm-width-conveyor-belt","tag-3000mm-width-conveyor-belt","tag-3200mm-width-conveyor-belt","tag-3400mm-width-conveyor-belt","tag-3500mm-width-conveyor-belt","tag-3600mm-width-conveyor-belt","tag-3700mm-width-conveyor-belt","tag-3800mm-width-conveyor-belt","tag-3900mm-width-conveyor-belt","tag-4000mm-width-conveyor-belt","tag-4200mm-width-conveyor-belt","tag-5000mm-width-belt","tag-5200mm-width-conveyor-belt","tag-belt-filter-press","tag-cake-washing","tag-dewatering-filter-belt","tag-drainage-belt","tag-extra-wide-conveyor-belt","tag-horizontal-belt-vacuum-filter","tag-horizontal-vaccum-filter-belt","tag-super-width-conveyor-belt","tag-vaccum-horizontal-filter-belt","tag-vacuum-belt-filter","tag-vacuum-filter-belt"],"_links":{"self":[{"href":"https:\/\/www.sungda.com\/index.php\/wp-json\/wp\/v2\/posts\/38","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sungda.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sungda.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sungda.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sungda.com\/index.php\/wp-json\/wp\/v2\/comments?post=38"}],"version-history":[{"count":23,"href":"https:\/\/www.sungda.com\/index.php\/wp-json\/wp\/v2\/posts\/38\/revisions"}],"predecessor-version":[{"id":7656,"href":"https:\/\/www.sungda.com\/index.php\/wp-json\/wp\/v2\/posts\/38\/revisions\/7656"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sungda.com\/index.php\/wp-json\/wp\/v2\/media\/239"}],"wp:attachment":[{"href":"https:\/\/www.sungda.com\/index.php\/wp-json\/wp\/v2\/media?parent=38"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sungda.com\/index.php\/wp-json\/wp\/v2\/categories?post=38"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sungda.com\/index.php\/wp-json\/wp\/v2\/tags?post=38"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"working](\"https:\/\/www.sungda.com\/wp-content\/uploads\/2014\/04\/Horizontal-belt-filter-1024x320.jpg\")
<\/p>\n![\"drainage](\"https:\/\/www.sungda.com\/wp-content\/uploads\/2014\/04\/Horizontal-Vacuum-filter-belt-1024x249.jpg\")
<\/p>\n![\"filter](\"https:\/\/www.sungda.com\/wp-content\/uploads\/2014\/04\/dewatering-filter-belt-drainage-belts-1024x186.jpg\")
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It is suitable for working environment in contact with acid and alkali, such as phosphate fertilizer manufacturing, alumina industry, catalyst (4A zeolite) and other industries. The covering rubber is blended with rubber and plastic and filled with inert materials with superior acid and alkali resistance, which is better than neoprene in acid and alkali resistance. The belt carcass material uses polyester fabric, which is more reliable than the surface fabric carcass in acid and alkali resistance. The drain hole is made of pure glue, which prevents the penetration of acid and alkali liquid through the cloth layer to layer the filter belt, which reduces the service life of the filter belt;<\/p>\n
Mainly used for filtering high temperature materials, 80\u2103\uff1ctemperature\uff1c180\u2103. According to the main performance of heat-resistant belt damage and even loss of work ability. Different heat-resistant grades, use EPDM or styrene-butadiene rubber as the cover rubber, the belt carcass material is made of high-strength polyester fabric, the cover rubber and the horizontal vacuum filter belt<\/span><\/strong>\u00a0carcass layer are laid with heat-resistant glass cloth, and the drain hole is made of heat-resistant pure The rubber layer prevents damage to the belt carcass caused by high temperature. Greatly increase the life of the heat-resistant filter belt;<\/p>\n
The covering rubber adopts nitrile rubber with high acrylonitrile content as the main material and polyester fabric as the horizontal vacuum filter belt<\/strong><\/span> carcass material. It is suitable for filtering, oily materials and environments in contact with various working oils. It has the advantages of low volume change rate, high strength retention, and wide application range;<\/p>\n
The horizontal vacuum filter belt’s carcass is made of polyester fabric, and the cover rubber is a combination of natural rubber and butadiene rubber, which has the characteristics of high elasticity, impact resistance and cold resistance. It can be used normally in an environment of minus 40\u00b0C.
Features and applications of horizontal vacuum filter belt<\/strong><\/span>: the product can achieve continuous filtration, washing, drying, filter cloth regeneration: high filtration rate, large production capacity, good washing effect, low cake moisture, flexible operation and other advantages.
Applied to solid-liquid separation in petroleum, chemical, pharmaceutical, dye, food, metallurgy, mineral processing, power industry and water separation treatment in industry and life, such as dehydration of phosphoric acid, potassium oxide, alumina, citric acid, and barium sulfate. Desulfurization of exhaust gas from power plants, etc.<\/p>\n![\"\"](\"https:\/\/www.sungda.com\/wp-content\/uploads\/2014\/04\/vaccum-horizontal-filter-belt-1024x719.jpg\")
<\/p>\n\n![\"\"](\"https:\/\/www.sungda.com\/wp-content\/uploads\/2014\/05\/SUNGDA-conveyor-belt-vulcanization-workshop.jpg\")
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<\/p>\n10 Technical FAQs About Horizontal Vacuum Belt Filters for Solid-Liquid Separation<\/h1>\n\n\n\n
<\/ol>\n\n\n\n
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Separation Parameter<\/th> Horizontal Vacuum Belt Filter (HVBF)<\/th> Recessed Chamber Filter Press<\/th> Rotary Vacuum Drum Filter (RVDF)<\/th><\/tr><\/thead> Operation Mode<\/td> 100% Continuous inline<\/td> Discontinuous \/ Batch cycle<\/td> 100% Continuous inline<\/td><\/tr> Cake Washing Efficiency<\/td> Highest: Multi-stage plug-flow washing without cake re-slurring<\/td> Moderate: High wash fluid channeling and edge bypass<\/td> Low: Short arc residence time for wash application<\/td><\/tr> Cake Thickness Flexibility<\/td> High (5 mm ~ 100 mm controlled via speed)<\/td> Fixed by chamber plate depth<\/td> Limited by dip pan pick-up characteristics<\/td><\/tr> Fast-Settling Slurry Handling<\/td> Superior: Top-feed prevents particle classification\/stratification<\/td> Moderate<\/td> Poor: Coarse solids settle to bottom of feed pan<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n <\/ol>\n\n\n\n
Polymer Compound<\/th> Chemical & Thermal Compatibility<\/th> Typical Industry Application<\/th><\/tr><\/thead> SBR \/ Natural Rubber<\/td> Mild acids, neutral slurries, ambient temperatures<\/td> Coal washing, aggregate tailings, sand dewatering<\/td><\/tr> EPDM<\/td> Concentrated acids, hot slurries (up to 95\u00b0C), alkalis<\/td> Phosphoric acid production, titanium dioxide (TiO\u2082)<\/td><\/tr> Neoprene (CR)<\/td> Moderate oils, greases, aliphatic hydrocarbons<\/td> Heavy mineral processing, metal refining<\/td><\/tr> Fluoroelastomer (FKM)<\/td> Highly corrosive solvents, hot organic acids (>100\u00b0C)<\/td> Specialty chemicals, pharmaceutical intermediates<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n <\/ol>\n\n\n\n
<\/ol>\n\n\n\n
Fiber Material<\/th> Thermal Stability<\/th> Chemical Resistance Profile<\/th> Mechanical Abrasion<\/th><\/tr><\/thead> Polypropylene (PP)<\/td> Up to 90\u00b0C<\/td> Excellent against both strong acids and alkalis<\/td> Good<\/td><\/tr> Polyester (PE)<\/td> Up to 130\u00b0C<\/td> Superior against strong acids; degraded by alkalis<\/td> Excellent<\/td><\/tr> Polyamide (Nylon\/PA)<\/td> Up to 110\u00b0C<\/td> Poor in acids; exceptional in high-pH alkalis<\/td> Outstanding (Best abrasion resistance)<\/td><\/tr> PVDF \/ PTFE<\/td> Up to 150\u00b0C+<\/td> Chemically inert to virtually all solvents and acids<\/td> Moderate<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n <\/ol>\n\n\n\n
Wash Stage Configuration<\/th> Wash Liquor Volume Required<\/th> Soluble Impurity Recovery Efficiency<\/th><\/tr><\/thead> Single-Stage Wash<\/td> 1.0 \u00d7 Cake Void Volume<\/td> 75% ~ 85%<\/td><\/tr> 2-Stage Counter-Current<\/td> 0.6 \u00d7 Cake Void Volume<\/td> 90% ~ 95%<\/td><\/tr> 3-Stage Counter-Current<\/td> 0.4 \u00d7 Cake Void Volume<\/td> > 98%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n <\/ol>\n\n\n\n
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