High-Temperature Sealed Airlock Valve for Kilns, Furnaces & Bulk Hoppers
The YCD-HG Square Unloader is a high-temperature rotary airlock valve engineered to meter and discharge bulk solids from hoppers, baghouses, and storage silos operating under challenging thermal and pressure conditions. Built with reinforced cast housings, precision-machined 6- to 8-vane rotors, and graphite/PTFE double sealing, it maintains a 98% airlock integrity with gas leakage held below 0.25%. With temperature resistance reaching up to 400°C, it provides continuous dust and powder extraction at high-heat collection points across cement kilns, metallurgy plants, and chemical manufacturing lines.
Featured Model Variants
YCD-HG-01 | Small Dosing & Additive Feeder
Port Size: 150×150 mm | Capacity: 2.5 m³/h | Power: 0.37 kW | Max Temp: 200°C
Designed for compact bin vents, localized powder hoppers, and small testing lines.
YCD-HG-07 | Medium Industrial Furnace Discharge
Port Size: 450×450 mm | Capacity: 25.0 m³/h | Power: 3.0 kW | Max Temp: 350°C
Engineered for continuous fly ash extraction beneath medium baghouses and precipitators.
YCD-HG-10 | Mega-Flow High-Temperature System
Port Size: 600×600 mm | Capacity: 50.0 m³/h | Power: 7.5 kW | Max Temp: 400°C
Built for large cement kilns, metallurgical smelters, and heavy bulk material silos.
Key Technical Specifications
Flow rates from 2.5 to 50 m³/h across square flange profiles ranging from 150×150 mm to 700×700 mm.Operates within -0.04 to +0.10 MPa working pressures at controlled rotor speeds of 15–45 rpm. Powered by 0.37 kW to 7.5 kW gear motors or rotary actuators with IP55 sealing and CE / ISO 9001:2015 certification.
Why Choose the YCD-HG Square Unloader
Extreme Heat Tolerance: Engineered to operate continuously at up to 320°C standard, and safely handles up to 400°C for high-heat kilns and metallurgical smelters.
Maximum Airlock Integrity: Delivers a 98% sealing efficiency with ultra-low gas leakage (≤ 0.25%), utilizing precision rotors and graphite/PTFE double sealing.
Heavy-Duty Durability: Available in rugged cast iron and stainless steel (SS304/SS316) to withstand severe abrasion and corrosive chemical attacks.
Highly Scalable: Offers a wide range of capacities (2.5 to 50 m³/h) and sizes, perfectly matching everything from small powder dosing bins to massive industrial furnaces.
Why Leading Plants Choose SENOTAY YCD-HG Square Unloader
Factory-Direct Pricing. Certified Quality. Dedicated Support.
Best Price Guarantee
Certified & Compliant
Fast, Reliable Delivery
Types of YCD-HG-Square Unloader (Specifications Table)
Type No. | Inlet/Outlet Size (mm) | Capacity (m³/h) | Motor Power (kW) | Rotation Speed (RPM) | Temperature Limit (°C) | Material Options |
YCD-HG-01 | 150×150 | 2.5 | 0.37 | 15 | 200 | Cast Iron / SS304 |
YCD-HG-02 | 200×200 | 5 | 0.55 | 20 | 250 | Carbon Steel |
YCD-HG-03 | 250×250 | 8 | 0.75 | 25 | 250 | Stainless Steel |
YCD-HG-04 | 300×300 | 12 | 1.1 | 30 | 300 | SS316 |
YCD-HG-05 | 350×350 | 15 | 1.5 | 30 | 300 | Carbon Steel |
YCD-HG-06 | 400×400 | 20 | 2.2 | 35 | 350 | SS304 / SS316 |
YCD-HG-07 | 450×450 | 25 | 3.0 | 35 | 350 | Carbon Steel |
YCD-HG-08 | 500×500 | 30 | 4.0 | 40 | 400 | Alloy Steel |
YCD-HG-09 | 550×550 | 35 | 5.5 | 40 | 400 | SS316 |
YCD-HG-10 | 600×600 | 50 | 7.5 | 40 | 400 | Stainless Steel / Customized |
Product Description
The YCD-HG-Square Unloader is a rotary airlock valve with a square flange connection, designed to handle high bulk material volumes efficiently. It features:
Compact and rigid structure for stable operation.
High air-tightness performance to prevent air leakage.
Smooth rotation with a high-precision rotary actuator.
Available in multiple models with varied capacities and material options.
These unloading devices are built for continuous, heavy-duty applications, ensuring optimal dust collection and material transfer efficiency in industrial plants.
YCD-HG Square Unloader — Technical Specification Table
Physical Dimensions | Performance Ratings | Material & Construction | Operational Data | Certifications & Lifecycle |
Model Range: 200–700 mm | Working Pressure: −0.04 to +0.10 MPa | HT250 / QT500 / SS304 | 0.75–7.5 kW | 5–12 years |
Length: 540–1,280 mm | Operating Temp: ≤ 120 °C | Carbon Steel / SS304 | 18–45 rpm | 18–24 months |
Width: 430–880 mm | Max Temp: 320 °C | PTFE / Graphite Double Seal | 40–85 Nm | ISO 9001 / CE |
Height: 380–820 mm | Airlock: ≥ 98% | Heavy-Duty Roller | 110–640 kg | ≤ 0.25% leakage |
Square Flange Size: 200×200–700×700 mm | Flow Rate: 9–75 m³/h | 8–18 mm | 8–28 holes (Ø14–Ø24 mm) | IP55 |
BCD: 170–580 mm | Pressure Drop: ≤ 360 Pa | Epoxy 120 μm
Polyurethane 160 μm | 2–4 points | C3–C4 |
Inlet Opening: 190–690 mm | Material Density: ≤ 1.8 t/m³ | Reinforced Cast Steel | ≤ 4.5 mm/s | ≥ 350,000 cycles |
Outlet Opening: 190–690 mm | Max Particle Size: ≤ 18 mm | : Machined (Ra ≤ 3.2 μm) | 1,000–1,600 h | EN 15089 |
Core Components
Housing/Body: High-strength, corrosion-resistant casting.
Rotor: Precisely machined with six to eight blades for efficient discharge.
End Covers: Precision-fit covers that ensure air-tight sealing.
Bearings: Heavy-duty bearings for high-speed rotation and minimal vibration.
Drive Motor: Optional rotary actuator or electric motor drive with variable speed.
Sealing System: Ensures zero air leakage and dust containment.
YCD-HG-Square Unloader Installation Method
Ensure a clean, level surface on the hopper or outlet.
Align the square flange of the unloader with the system outlet.
Use the provided bolt holes to secure the unit tightly.
Connect the rotary actuator or motor to the power supply following control specifications.
Test rotation speed and sealing integrity before full operation.
Pro Tip: Always install the airlock valve vertically to guarantee consistent discharge flow and avoid material backflow.
YCD-HG-Square Unloader Material Properties
Component | Material | Properties |
Housing | Cast Iron / Carbon Steel | High durability & anti-abrasion |
Rotor | Stainless Steel | Corrosion-resistant & smooth surface |
Shaft | Alloy Steel | High tensile strength |
Bearings | Heat-treated Steel | Long service life |
Seal | PTFE / Rubber | Excellent air-tightness |
How It Works
The YCD-HG-Square Unloader operates on the rotary airlock principle. As the rotor turns, each pocket receives a measured quantity of material from the inlet. When it rotates, the material is sealed off from the air pressure differential and discharged at the outlet. This ensures continuous, regulated flow of material without air loss or dust leakage.
Technical Advantages in Manufacturing YCD-HG-Square Unloader (Senotay)
At Senotay (Hebei OuTai Environmental Protection Equipment Co., Ltd.), every YCD-HG-Square Unloader is manufactured under advanced CNC machining, ensuring high manufacturing precision and smooth surface finishing.
Technical advantages include:
ISO-certified production process.
Precision balancing of rotors.
Corrosion-resistant coatings for extended life.
Advanced sealing technology for zero-leak performance.
Full inspection and testing for each product before delivery.
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FAQs
Q1: What makes the YCD-HG-Square Unloader different from a round-type unloader?
Answers: The square design allows for more efficient air sealing and better material handling in high-pressure environments.
Q2: Can the YCD-HG series be customized?
Answers: Yes, we provide various sizes, materials, and actuator options depending on the operating conditions.
Q3: What maintenance does it require?
Answers: Regular lubrication of bearings and inspection of seals and rotor blades ensure longevity.
Q4: Does Senotay provide installation support?
Answers: Yes, professional installation guidance and after-sales technical support are offered worldwide.
