Glucose vacuum drum filters

The glucose vacuum drum filter is a processing equipment designed for the food industry. It excels at separating impurities from glucose while producing high-quality filtered material. In typical food processing, challenges such as high material viscosity and suboptimal filtration performance often arise. Therefore, this glucose vacuum drum filter manufactured by Yinuo effectively filters viscous substances from glucose with rapid filtration speed and achieves high clarity in the clarified liquid.

Features of the Glucose vacuum filter:

1. Excellent Separation Performance

√ High filtrate clarity with a dense filter layer formed by pre-coated filter aids, trapping fine impurities of 1-10μm. Superior light transmittance meets purification requirements.

√ Complete Cake Impurity Removal: Integrated washing + drying processes reduce cake moisture content to 15%-30%, minimizing filtrate loss and secondary contamination;

√ Stable Separation: 0.04-0.08MPa stable vacuum + 0.1-3r/min constant drum rotation ensures uniform cake thickness with minimal batch-to-batch variation.

2. Efficient Continuous Operation

√ Uninterrupted continuous processing: Full cycle completed per drum rotation, handling several to dozens of tons per hour per unit with outstanding efficiency;

√ High automation: PLC-controlled intelligent speed regulation and air gap adjustment, automated discharge + filter cloth cleaning, supports unattended operation to reduce labor costs;

√ Sealed and eco-friendly: Fully enclosed walls prevent splashing and odors, with separate waste liquid collection compliant with food industry standards.

3. Adaptable Structure, Convenient and Cost-Effective Operation

√ Structural optimization: Filter cloth + pre-coat design prevents clogging, extending cloth lifespan to 3-6 months. Precise matching of sector-shaped filter chambers and distribution valves ensures seamless process integration.

√ Flexible Adaptability: Adjustable aid dosage, rotation speed, and vacuum level accommodate varying slurry concentrations/viscosities with customization options;

√ Low-Maintenance Operation: Simple installation, easy replacement of wear parts, energy-efficient variable frequency design ensures low long-term operating costs.

4. Application Focus with Broad Extensibility

√ Core Compatibility: Specifically engineered for glucose suspensions (low solids content, fine particles), serving as the core equipment for sugar solution filtration and de-sludging;

√ Cross-Industry Expansion: Compatible with maltose, sucrose, and other sugar solutions; adapts to fermentation liquid and juice filtration in food/pharmaceutical industries; functions as pre-treatment for membrane equipment.

Working Principle:

Utilizing vacuum negative pressure as the driving force, the drum surface is covered with filter cloth and pre-coated with a filter aid to form a filtration layer. Through continuous drum rotation and coordinated control with the distribution valve, filtration, washing, dewatering, and discharge are integrated into a single process. Under vacuum pressure, glucose solution permeates through the filter layer and is extracted from the slurry, while solid impurities are retained to form a filter cake. This process yields highly clarified filtrate, tailored to the characteristics of glucose slurry with low solid content and fine particles.

Key Components:

· Distribution Valve: Connects the sector-shaped filter chambers within the drum to the vacuum/compressed air system, ensuring continuous operation.

· Precoat (≥80mm): Prevents filter cloth clogging and enhances filtrate clarity.

Workflow:

1. Startup Preparation

· Equipment Inspection: Clear debris, verify filter cloth integrity, ensure component seals are intact, and confirm drum rotation direction is correct.

· Precoat Activation: Inject suspension, activate vacuum pump to form dense precoat layer.

· Parameter Adjustment: Modulate drum speed, initiate agitation to prevent particle settling.

2. Core Operation Cycle

· Filtration Stage: Immerse drum in slurry, extract glucose solution to storage tank under vacuum, forming 1-10mm impurity cake.

· Wash and Dry: Spray wash solution to remove residual impurities (collect waste liquid separately), then dry cake to 15%-30% moisture content.

· Discharge and Regeneration: Compressed air reverses to dislodge the filter cake, which is scraped off at a 30°-45° angle. High-pressure spraying/compressed air cleans the filter cloth before entering the next cycle.

3. Shutdown Procedure

· Close the feed valve and continue rotating the drum until the slurry reaches the tank level below the drum bottom. Stop supplying wash liquid.

· Shut off the vacuum pump: After the drum stops adsorption, flush the drum, slurry tank, filter cloth, and scraper with clean water to thoroughly remove residual material and prevent affecting the next filtration cycle.

· Shut off the drum drive motor and agitation device. Inspect the equipment status and record operating parameters (e.g., vacuum level, filter cake thickness, throughput, etc.).

Glucose vacuum drum filters are widely used in the glucose production industry for filtering and de-sludging glucose solutions to obtain pure liquids that meet subsequent process requirements. They feature continuous operation, high throughput, advanced automation, and excellent separation efficiency, making them particularly suitable for large-scale modern glucose production lines. Additionally, similar drum vacuum filter machines can be extended for use in solid-liquid separation of sugar solutions such as maltose and sucrose, as well as in the food and pharmaceutical industries. They can also serve as a pretreatment step prior to membrane filtration equipment.

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