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Dust Collector Rotary Airlock Valve

Short Description:

Our Boiler Ash Rotary Valves, also known as rotary airlock discharge valves, are professionally engineered for high-temperature boiler ash and flue dust handling. Featuring precision rotor sealing and continuous uniform discharging performance, these rotary valves maintain stable air lock pressure, prevent air backflow and ash leakage, and ensure uninterrupted boiler system operation. High temperature resistance, wear-proof structure and low noise running make them reliable core equipment for boiler flue gas and ash removal systems.

Product Detail

FAQ

How to Choose the Right Conveyor

Product Tags

Boiler Ash Rotary Valve is a dedicated rotary airlock feeder designed for boiler ash discharge, thermal power plants and industrial furnace dust removal systems. Equipped with multi-blade rotary impeller and tight clearance housing, it realizes quantitative, continuous and stable discharge of boiler fly ash, bottom ash and fine dust particles. The core airtight structure effectively isolates internal negative pressure from external atmospheric pressure, eliminating air leakage, pressure loss and dust back suction that commonly occur in boiler ash handling systems.
Optimized for high-temperature and abrasive working conditions, the valve body adopts thickened cast steel or stainless steel structure with wear-resistant impeller surface treatment, adapting to long-term scouring of high-temperature ash particles. Matched with variable-speed motor and full-closed transmission device, it supports adjustable discharge volume, stable operation and anti-blocking performance. Fully automatic running requires minimal manual intervention, greatly improving the automation level and operational safety of boiler ash discharge systems.

 Core Product Advantages

  • Reliable Airlock & Zero Air Leakage: Precision machining clearance and optimized blade sealing structure maintain stable pressure balance, effectively prevent air backflow and flue gas leakage in boiler negative pressure systems.
  • High Temperature & Wear Resistance: Special high-temperature resistant and wear-resistant material configuration adapts to long-term boiler high-temperature ash working conditions, resisting particle erosion and deformation.
  • Continuous & Uniform Discharging: Rotary impeller quantitative feeding design ensures stable and consistent ash discharge volume, avoiding material accumulation and system blockage.
  • Anti-blocking & Stable Operation: Smooth rotor rotation and full-closed drive structure prevent jamming caused by ash caking or sundries, realizing long-term trouble-free operation.
  • Easy Maintenance & Energy Saving: Compact integrated structure, simple disassembly and replacement of wearing parts; low power consumption and low noise operation reduce overall system operating costs.

 Application Scope

Widely applied in thermal power plant boiler ash removal, industrial boiler flue dust treatment, waste incineration boiler ash handling, dust collector discharging, pneumatic conveying systems and thermal energy equipment. Suitable for continuous discharge and air lock isolation of boiler fly ash, bottom ash, fine powder and tiny granular materials.

Technical Specifications (Marketing Version)

Valve Body Material: Cast Iron, Carbon Steel, Stainless Steel 304/316
Size Range: DN150–DN800 (Customized Available)
Drive Mode: Electric Variable-speed, Fixed-speed Motor
Working Temperature: -10℃ ~ +350℃ (High-temperature customized optional)
Core Features: Air tightness, high temperature resistance, anti-wear, anti-blocking, continuous discharging, low noise

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  • SELECTION & TECHNICAL QUESTIONS

    Q1: How do I select the right conveyor model? What information should I provide?

    > To recommend the most suitable solution, please provide the following details:

    > 1. Material type: What material are you conveying? (e.g., fly ash, wood chips, biomass pellets, bottom ash, etc.)

    > 2. Material properties: Particle size, temperature, moisture content, abrasiveness

    > 3. Capacity requirement: How many tons per hour (t/h) do you need?

    > 4. Installation conditions: Conveying distance, incline angle, space limitations

    > 5. Application industry: Which industry is this for? (e.g., waste-to-energy plant, biomass power plant, cement plant)

    > You can also email us or contact us via WhatsApp. Our engineers will get back to you within 24 hours.

    Q2: What is the difference between screw conveyors and chain conveyors? Which one should I choose?

    > Both types have different applications:

    > – Screw Conveyors: Best for powdery and small-grain materials (e.g., fly ash, cement powder). Good sealing performance, simple structure, low maintenance cost.

    > – Chain Scraper Conveyors: Best for bulky, highly abrasive materials (e.g., bottom ash, municipal solid waste, biomass fragments). Supports multiple inlet and outlet points.

    > – Bucket Elevators: Ideal for vertical or steep-incline material lifting.

    > If you are not sure, tell us your material and working conditions, and our engineers will help you choose.

     

    Q3: Can your equipment handle high-temperature materials? What is the maximum temperature?

    > We can customize equipment according to material temperature:

    > – Standard type: 0~80°C, carbon steel

    > – Medium temperature type: 80~200°C, thickened wear-resistant liner

    > – High temperature type: 200~400°C, special heat-resistant steel, optional cooling jacket

    > Please tell us your material temperature, and we will recommend the most suitable material solution.

    Q4: Are there any limits on conveying distance and lifting height?

    > Standard design range:

    > – Screw conveyor: Single section up to 70 meters; multiple sections can be connected for longer distances

    > – Chain conveyor: Single machine up to 60 meters

    > – Bucket elevator: Lifting height up to 50 meters

    > We can also customize for extra-long distances or special angles. Contact us for detailed solutions.

    Q5: Do you provide explosion-proof design?

    > Yes. For explosive and flammable conditions such as pulverized coal and biomass dust, we offer:

    > – Explosion-proof motors (Ex d IIB T4 standard)

    > – Reserved openings for explosion vents / rupture discs

    > – Fully sealed structure to prevent dust leakage

    > Please specify your explosion-proof rating requirements.

    CUSTOMIZATION & MANUFACTURING

    Q6: Do you support customization? What is the lead time?

    > Over 90% of our equipment is customized according to customer working conditions. Standard models take about 90–120days. Special customizations take 120–180 days, depending on configuration complexity.

    Q7: What material options do you offer?

    > Common materials include:

    > – Carbon steel (Q235B): Standard working conditions

    > – Wear-resistant steel (NM400/NM500): Highly abrasive materials

    > – Stainless steel 304/316L: Food, chemical, corrosion-resistant requirements

    > – Bi-metal wear-resistant composite plate: Extreme abrasion conditions

    > We will recommend the most cost-effective material solution based on your material properties.

    Q8: What certifications do you have?

    > We hold the following certifications:

    > – ISO 9001:2015 Quality Management System

    > – ISO 14001 Environmental Management System

    > – ISO 45001 Occupational Health & Safety Management

    > – CE Certification (EN 1090 Steel Structure)

    > If you need scanned copies of specific certificates, please contact us.

     

    DELIVERY & LOGISTICS

    Q9: Which countries do you export to? Do you have export experience?

     

    > Our equipment has been exported to more than 20 countries worldwide, including:

    > – Europe: Germany, France, Poland, Turkey, etc.

    > – Southeast Asia: Singapore, Thailand, Indonesia, Vietnam, etc.

    > – Middle East: Saudi Arabia, UAE, etc.

    > – South America**: Brazil, Chile, etc.

    > We are familiar with the full export process: packaging, customs declaration, and ocean freight. We can provide FOB, CIF, and other trade terms.

     

    Q10: What is your packaging method? Is it suitable for long-distance ocean shipping?

     

    > Export-standard packaging:

    > – Large items / complete machines**: Rust prevention + waterproof film + fumigated solid wood pallet

    > – Precision components: Wooden case with shock-absorbing filling

    > – Random accessories: Categorized packing with detailed packing list

    > All wooden packaging meets IPPC fumigation standards for direct customs clearance.

     

    Q11: What is your minimum order quantity?

    > We do not have a strict minimum order quantity. Single-unit orders are welcome. Bulk orders can enjoy more favorable pricing.

     

    INSTALLATION & AFTER-SALES

     

    Q12: Do you provide installation guidance? Do engineers need to come to site?

     

    > We offer two service options:

    > 1. Remote guidance: Detailed installation drawings and operation manuals, video guidance for installation (free of charge)

    > 2. On-site service: Dispatch engineers to site for installation and commissioning (travel costs are additional)

    > Most customers choose remote guidance. Our equipment is designed as a modular structure for easy installation.

     

    Q13: What is the warranty period? What are the wearing parts?

    > Standard warranty period is 12 months (from the date of arrival at port).

    > Wearing parts list:

    > – Chain / screw flights: Approximately 1–3 years, depending on material abrasiveness

    > – Liners: Approximately 2–4 years

    > – Bearings: Approximately 2–3 years

    > We recommend ordering a wearing-parts spare kit together with your first order.

     

    Q14: How do you solve problems during operation?

     

    > We provide 7×24 technical support:>

    > – Response within 24 hours for technical issues

    > – Remote video troubleshooting guidance

    > – Engineer on-site service when necessary

    > – Common spare parts in stock for fast delivery

     

    QUOTATION & COOPERATION

    **Q15: How can I get a quote? How long does it take?

    > Quotation process:

     

    > 1. You provide material parameters, capacity, installation conditions, and other requirements

    > 2. Our engineers evaluate and select the appropriate model

    > 3. Formal quotation and technical proposal provided within 7 working days

    > You can contact us via email, or the online inquiry form.

     

    Q16: What are your payment terms?

    > Standard payment terms:

    > – 30% advance payment: After contract signing, to start production

    > – 70% balance: Before shipment, or against copy of Bill of Lading

    For long-term cooperative customers, more flexible payment terms can be negotiated.

    Follow these 3 steps to find your ideal conveyor solution


    Step 1: Identify Your Material Type

    Different materials require different conveyor designs. Tell us what you are conveying:

     

    Material Category Examples Recommended Conveyor Type
    Powder / Fine Granules Fly ash, cement powder, lime powder Screw Conveyor
    Small Granules / Pellets Biomass pellets, plastic granules, grain Screw Conveyor / Belt Conveyor
    Fragments / Chips Wood chips, bark, agricultural residues Chain Scraper Conveyor
    Bulky / Abrasive Bottom ash, slag, MSW, clinker Chain En-Masse Conveyor
    Vertical Lift Any bulk material needs vertical transport Bucket Elevator

    Step 2: Define Your Working Conditions

    Please prepare the following parameters before contacting us:

     

    Parameter Why It Matters Example
    Capacity (t/h) Determines conveyor size and power 10 t/h, 50 t/h, 100 t/h
    Conveying Distance (m) Determines machine length 15m horizontal, 30m incline
    Incline Angle (°) Affects capacity and design 0° horizontal, 30° incline
    Material Temperature (°C) Determines material grade Ambient, 150°C, 300°C
    Moisture Content (%) Affects discharge design Dry, damp, wet (needs dewatering)
    Abrasiveness Determines liner thickness Low, medium, high
    Application Industry Determines certification needs Power plant, cement, mining, recycling

    Step 3: Choose Configuration Options

    Based on your answers above, our engineers will recommend:

    Material grade — carbon steel / wear-resistant steel / stainless steel

    Sealing type — open trough / fully enclosed / gas-tight

    Drive system — motor power, gearbox brand, speed range

    Auxiliary options — explosion-proof motor, cooling jacket, cleaning device, level sensors


     Not Sure Where to Start?

    Send us your basic requirements, and our engineers will design a customized solution for you — completely free.

    Email: bootec@bootecgroup.com  Response time: Within 24 hours

    [REQUEST A FREE QUOTATION →]

     

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