The feeding system of a twin-shaft forced mixing concrete mixer is a critical component designed to efficiently transport raw materials into the mixing chamber. It comprises a hoisting mechanism, feeding track, hopper, and associated control systems. The system operates through coordinated mechanical and electrical components, ensuring precise material delivery while maintaining safety. Key elements like the brake motor, reducer, wire rope, and limit switches work together to automate the lifting, positioning, and discharging of materials into the mixer. This system balances speed, accuracy, and reliability to support continuous mixing operations.
Key Points Explained:
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Hoisting Mechanism
- Brake Motor: Powers the lifting process, ensuring controlled movement and immediate stopping when needed.
- Reducer: Adjusts the motor's high-speed rotation to a suitable torque for lifting heavy material loads.
- Wire Rope: Connects the hoist to the hopper, enabling vertical movement along the feeding track.
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Feeding Track
- Guides the hopper’s path during ascent/descent, ensuring alignment with the mixer’s inlet.
- Limit Switch: Stops the hopper at the correct height for discharge, preventing over-travel and collisions.
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Hopper
- Holds raw materials (e.g., aggregates, cement) during transport.
- Discharge Door: Automatically opens at the designated height, allowing materials to fall into the feed funnel and mixing tank.
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Control and Safety Features
- Electrical Components: Includes short-circuit and overload protection to safeguard the motor and system.
- Positioning Accuracy: The limit switch ensures the hopper stops precisely, minimizing spillage or incomplete discharge.
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Integration with Mixer
- The feed funnel directs materials into the twin-shaft mixing chamber, where blades ensure homogeneous blending.
- Synchronization with other systems (e.g., water/oil supply) is managed by the central electrical control panel.
This design prioritizes efficiency and durability, reducing manual intervention while meeting the high demands of industrial concrete production.
Summary Table:
| Component | Function |
|---|---|
| Hoisting Mechanism | Powers the lifting process with a brake motor, reducer, and wire rope. |
| Feeding Track | Guides the hopper’s path and includes limit switches for precise positioning. |
| Hopper | Holds raw materials and features an automatic discharge door. |
| Control Systems | Includes electrical safeguards and synchronization with other mixer systems. |
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