Chain conveyors continuously and stably transport scattered metal shavings (machine chips, milling chips, planing chips, etc.) into the hopper of a briquetting machine. Their design and selection directly affect the efficiency and stability of the entire briquetting system.

The following is a detailed introduction to this chain conveyor:

I. Main Functions and Roles

1. Continuous Feeding: Replaces manual feeding, achieving automated production and improving efficiency.

2. Stable and Uniform: Ensures a uniform flow of metal shavings entering the briquetting machine, avoiding bridging or cavities in the hopper, and guaranteeing consistent density of the briquetting blocks.

3. Heavy Load Capacity: Able to withstand the enormous weight and abrasion of metal shavings (especially steel and iron shavings).

4. Adaptability to Complex Working Conditions: Can handle wet shavings containing coolant or oil, as well as shavings of various shapes (rolled, lumpy, fragmented).

5. Preliminary Material Distribution: Sometimes, by controlling the chain speed or adding a distributor, the material can be initially leveled.

Parameter:

II. Core Structure and Features

This type of conveyor is typically a heavy-duty plate chain conveyor or scraper conveyor.

1. Conveyor Chain Plates:

Material: High-strength alloy steel (such as Mn13 wear-resistant steel) or surface-hardened carbon steel, wear-resistant and impact-resistant.

Structure: Usually an overlapping or lapped plate chain with small gaps to prevent leakage of fine debris. The plate surface may have a shallow V-shape or raised texture to increase friction and load-bearing capacity.

Width: Determined by the processing capacity of the briquetting machine, usually wider than the feed inlet of the briquetting machine to ensure full coverage.

2. Transmission System:

Drive Unit: Uses a high-torque, adjustable-speed geared motor (usually a variable frequency motor) to precisely adjust the feeding speed according to the briquetting rhythm.

Sprockets: Heavy-duty forged sprockets with hardened teeth, robust and durable.

3. Machine Body and Guide Rails:

Frame: Heavy-duty steel structure, rigid enough to withstand chain tension and material weight without deformation.

4. Guide Rails: Side guide rails made of wear-resistant steel support and guide the chain for smooth operation, reducing friction and deviation.

5. Wear Resistance and Sealing: Replaceable wear-resistant liners (UHMW-PE or wear-resistant steel plates) are installed at the bottom to protect the casing.

Side sealing strips may be present to reduce the seepage of fine debris and oil into the frame.

6. Cleaning Design: Scrapers or cleaning devices are often installed under the return chain plate to prevent debris from being carried back to the tail and accumulating.

A collection tank can be designed to collect dripping coolant or oil.

III. Key Selection and Design Parameters

1. Conveying Capacity (tons/hour): Must be slightly greater than the maximum processing capacity of the briquetting machine to ensure sufficient material supply.

2. Chain Plate Width and Linear Speed: Calculated based on capacity and material bulk density.

3. Installation Angle: Usually horizontal or at a small angle (<45°). Excessive angle will cause material to slip. Large-angle lifting requires special design (such as an elevator with transverse baffles). 4. Material Characteristics: The type (steel, aluminum, copper), form (dry, wet, oil content), length, and bulk density of the metal scraps must be clearly defined.

5. Control Method: Linked control with the briquetting machine. Common modes:

Continuous Operation: Constant speed matched to the briquetting cycle.

Start/Stop Control: Controlled by the level gauge (e.g., ultrasonic, rotary paddle type) signal in the briquetting machine hopper; stops when full, starts when low.

Variable Frequency Speed Regulation: The ideal method, steplessly adjusting the feeding speed through level signal feedback to keep the hopper at its optimal filling state.

IV. Key Points for Matching with the Broiler System

1. Interface Matching: The conveyor outlet must seamlessly connect to the briquetting machine hopper inlet, usually via flange or flexible connection, to prevent scrap from flying.

2. Safety Interlock: Electrical interlock; when the briquetting machine stops due to a malfunction, the conveyor must stop immediately, and vice versa.

3. Maintenance Space: The design must consider sufficient space for chain tension adjustment, chain plate replacement, and daily cleaning.

V. Advantages and Potential Issues

Advantages: Robust and durable, long service life; stable and reliable conveying, suitable for heavy loads and harsh working conditions; relatively simple maintenance, easy replacement of wearing parts.

Issues to Note:

Higher Initial Investment: Higher cost than belt conveyors.

Noise: Metal friction may generate significant noise, requiring good lubrication.

High Energy Consumption Over Long Distances: Due to high frictional resistance, energy consumption is higher than belt conveyors over long distances.

Risk of Jamming: If excessively long tangled clumps of scrap or foreign objects (such as tools or gloves) are mixed in, the chain may jam. Magnetic separation or manual inspection should be considered at the front end.

Summary:

The chain plate conveyor for metal scrap briquetting machines is a key piece of equipment tailored for heavy industrial applications. Its core value lies in its reliability, stability, and durability, ensuring the continuous and efficient operation of the metal scrap recycling production line. When selecting a conveyor system, it is essential to communicate closely with the briquetting machine supplier and the conveyor manufacturer, providing detailed material data and operating requirements to design the most suitable system.

If you have specific project requirements (such as the type of metal scraps to be processed, expected output, installation space, etc.), I can provide you with more detailed analysis and suggestions.