Product Introduction

The roller head covers, and inner/outer flanges for rock wool centrifuges are critical disc-shaped connection components situated at the roller head assembly of high-speed centrifuges used in rock wool production. Mounted on the outer end face of the centrifuge rollers, these parts are high-precision structural components that operate under wear-intensive conditions.

Essentially, it serves as the combined "locking disc + sealing cap + mounting base" for the high-speed spinning roller, ensuring that the centrifuge remains stable and performs continuously under extreme high-temperature and high-speed operations to deliver qualified rock wool fibers.

Operating Principle

Clamping & Positioning

The outer flange is securely bolted to the end of the centrifuge roller, locking the spinning roller firmly to the main spindle. This eliminates any axial drifting or eccentricity during high-speed rotation.

Torque Transmission

Rotating synchronously with the main spindle at high velocities, it smoothly transmits torque to the centrifuge roller, allowing the melt to be drawn into ultra-fine rock wool fibers via centrifugal force.

Sealing & Thermal Insulation

Precision-engineered flush mating combined with integrated labyrinth geometries blocks high-temperature melt, hot gases, and binder solutions from penetrating the bearing cavity, while minimizing heat conduction to protect internal bearings and drive components.

Centrifugal Load Bearing

Engineered to withstand immense centrifugal forces under high-speed rotation, maintaining structural rigidity and suppressing excess vibration to ensure highly uniform fiber thickness.

Auxiliary Component Interface

Acts as the mechanical mounting platform for downstream components like binder distribution discs, retaining rings, and air shrouds, ensuring seamless coordination of the binder spraying, fiber collection, and fiber formation stages.

Core Functions

01/

Secure Fastening & Locking

Securely clamps the centrifuge roller body, preventing loosening or structural displacement at high rotational speeds.

02/

Sealing & Thermal Barrier

Blocks high-temperature melt and hot gases from entering the spindle and bearing housing, shielding internal bearings and seals.

03/

Concentric Alignment

Keeps the centrifuge roller perfectly concentric with the main spindle, minimizing system vibration for a highly uniform fiber spinning process.

04/

Component Integration

Serves as the primary interface for mounting binder distribution discs, retaining rings, and air shrouds within the fiber-forming system.

05/

Heat Dissipation / Water Cooling

Works in tandem with water-cooling configurations to continuously dissipate extreme heat and maximize service life.

Product Design & Performance Features

Structural Characteristics

Typically designed with a classic disc profile featuring a precision-bored center hole for spindle pass-through.
Equally spaced bolt holes around the outer perimeter ensure robust fastening and balanced load distribution.
Manufactured from premium heat-resistant alloy steel to completely eliminate thermal deformation at elevated temperatures.
Commonly integrated with labyrinth seals and internal water-cooling channels to withstand the continuous high-speed, high-heat conditions of modern rock wool lines.

Key Advantages

Excellent Thermal Stability: Advanced heat-resistant alloys prevent warping or cracking under intense heat from the rock wool melt, supporting long-term continuous operation.
Dependable Sealing Integrity: The integrated labyrinth or face seal configurations effectively block hot fibers, gases, and binder liquids, shielding the spindle and bearings.
High-Precision Concentric度: High machining tolerances ensure perfect concentric alignment between the roller and spindle, eliminating vibration for a more uniform, premium-quality fiber yield.
High Structural Strength: High fatigue and impact resistance allows the flanges to bear severe centrifugal stresses without loosening or fracturing.
Rapid Maintenance Turnaround: Standardized flange dimensions and bolt patterns allow quick replacement of rollers or binder discs, minimizing production line downtime.
Highly Adaptable Configurations: Readily integrates water-cooling pathways for excellent heat dissipation; fully compatible with various types of 4-roller rock wool centrifuges.
Optimized Production Yields: Reliable, low-failure performance meets the requirements of continuous, high-speed, and high-volume industrial automated production lines.

Products Description

Front Flange / Front Roller Flange: Positioned at the front end (fiber discharge side) of the centrifuge roller to secure the roller body, seal the face, and position the binder distribution disc.
Outer Clamping Flange / Outer Roller Clamping Disc: Clamps the outer end face of the roller to prevent thermal loosening, assist in sealing, and support the binder distribution plate.
Binder Distribution Disc Flange / Spray Flange: An outer flange integrated with binder channels/spray nozzles that serves as a mounting base, distributes binder agents, and seals the roller end.
Anti-Vibration Flange / Dampening Ring / Front Dampening Flange Ring: Features vibration-dampening slots or buffer geometries to absorb high-speed harmonics, protect spindle seals, and lower operating noise.
Rear Flange / Bearing Housing Front Flange: Connects the back end of the centrifuge roller to the bearing housing, providing spindle alignment, bearing chamber sealing, and cooling water connections.
Intermediate Spacer Flange / Inner Flange: An internal flange disc that segregates the roller cavity from the bearing housing, supports the inner wall of the roller, and forms cooling channels.
Connection Flange / Main Spindle Flange: Links the main spindle to the roller assembly or drive motor, transmitting torque while ensuring coaxial alignment and preventing high-temperature axial drifting.
Air Ring Flange / Air Shroud Flange: Secures the air ring or air shroud housing, seals air duct paths, positions the air nozzles, and connects to the outer casing.
Centrifuge Casing Flange / Main Frame Flange: Used for segmented assembly of the centrifuge's outer casing structure, providing thermal insulation sealing and mounting points for maintenance doors.
Sealing Flange / Labyrinth Flange: Machined with dedicated labyrinth grooves to provide dynamic sealing, preventing hot air or dust leakage while safeguarding the bearings.
Stainless Steel Outer Flange: Outstanding high-temperature and corrosion resistance; serves as the standard configuration for premium rock wool production lines.
Water-Cooled Flange: Built with dedicated internal cooling channels, engineered specifically for extreme high-heat zones.
Quick-Release Flange: Features standardized bolt patterns for rapid roller replacement and streamlined inspection maintenance.
Power Lock / Expansion Sleeve Flange: Utilizes a mechanical expansion sleeve to lock onto the spindle, completely eliminating high-temperature slippage.
(Also known as: Outer Flange, Roller End Flange, Front Flange, Spinning Roller Clamping Disc, Roller Head Flange, Binder Disc Mounting Flange)

Technical Specifications

General Configurations

Centrifuge Model Compatibility: Fits model series 320, 350, 360, 702, etc.

Available Materials: Stainless steel, carbon steel, low-alloy high-strength steel (Fully customizable).

Standard Technical Parameters

1. Dimensions & Ratings

Nominal Diameter (DN - Centrifuge Bore Size):

Air Intake / Feeding End: DN250, DN300, DN320, DN350, DN360, DN702, etc.

Air Exhaust / Fiber Collection End: DN350, DN400, DN450, etc.

Pressure Ratings (PN):

Standard Duty: PN10 (1.0 MPa).

Heavy Duty (High-Vibration / High-Heat): PN16 (1.6 MPa).

Design Temperature Range: -20°C to +250°C (Optimized for hot air operating conditions).

2. Materials & Surface Engineering

Standard Applications: Q235B Carbon Steel (Forging grade).

High-Temperature / Corrosive Environments: 304 Stainless Steel (0Cr18Ni9).

Flange Mating Face: Raised Face (RF) configuration; Surface roughness: Ra 12.5 to 25 m.

3. Structural Mechanics

Flange Style: Slip-On (SO) plate flat welding flange, engineered for welded integration with air shrouds or piping.

Mating Component: Welding neck or slip-on flanges paired with flexible graphite gaskets (Thermal rating up to 250°C).

4. Installation Tolerances (Anti-Vibration Metrics)

Flange Face Flatness: $\le$ 0.5 mm/m.

Coaxial Alignment Tolerance: $\le$ 1.0 mm (Critical to suppress high-speed centrifuge vibrations).

Bolt Preload Torque: Symmetric, uniform cross-pattern tightening; Target torque: 80–120 N·m.

Industrial Applications

Rock Wool Production Core Centrifuges: Specially engineered for four-roller centrifuges and rock wool spinning machines. Mounted on the outer ends of the centrifugal rollers, they are indispensable components of the fiber-forming stage.
High-Temperature Melt Spinning: Performs reliably in continuous production environments where basalt, slag, and other mineral raw materials are melted at extreme temperatures and spun into fine fibers at high speeds.
High-Velocity Dynamics: Engineered for high rotational speeds, ensuring stable operation under concurrent high-speed, high-temperature, and high-dust conditions.
Insulation Board & Blanket Manufacturing: Broadly applied across complete processing lines producing architectural insulation rock wool boards, exterior wall insulation panels, pipe insulation wraps, and fireproof rock wool products.
Slag Wool & Mineral Wool Lines: Fully compatible with production equipment handling slag wool, granulated wool, and similar synthetic mineral fibers.
Continuous Automated Production: Perfectly suited for 24/7 continuous industrial operations with stringent demands for tight sealing, precise centering, and high thermal resistance.