Screening Capacity: Typically 5-50 tons/hour.
Screening Efficiency: Suitable for organic fertilizers with a moisture content ≤30%.
Screen Material: Typically made of manganese steel for durability.
Drum Speed: The drum typically rotates at a low speed of 5-20 RPM.
Applications: Primarily used for separating finished products from return materials and grading finished products. It can also be used for compost post-processing and compound fertilizer grading.
Frame: The frame is welded from high-quality carbon steel plates and channel steel, and has passed strict product certification and specific process requirements, ensuring it meets its intended purpose.
Transmission and Screening Section: This section utilizes a modular screen, which is transmitted to the main shaft via a drive pulley through a coupling. The screen is mounted and welded to the main shaft's roller cage. Material enters from the feed end, continuously rotates and is graded within the roller cage, and then evenly flows out from the lower outlet, effectively separating finished product from return material, thereby improving operating efficiency.
Transmission and Coupling Section: The motor drives a pulley, V-belt, and reducer, which rotate the main shaft. The transmission reducer and the main shaft's working section utilize a pin-type coupling for transmission, facilitating assembly and maintenance.
Working principle of Rotary screening Machine:
Drum screening equipment uses rotation, vibration, and shaking to separate various materials into several grades according to particle size. The drum screening machine consists of five components: a drum frame, a hopper, a reducer, and an electric motor. After entering the drum through the feed inlet, the material is screened as the drum rotates. Meanwhile, larger particles flow forward along the drum's slope, gradually being screened out through screens of varying apertures. After screening, the material falls into a hopper and is then conveyed manually or by belt conveyor to the finished product area.
Advantages of Rotary screening Machine:
The drum screening machine uses a combined screen that is easy to maintain and replace. It has a simple structure, is easy to operate, and runs smoothly. It is ideal equipment for screening and grading fertilizers.
1. The screen can be replaced at any time according to the particle size requirements.
2. The finished product is separated from the return material, achieving grading and uniform classification of the finished product.
Model | Power(kw) | Reducer Model | Drum Speed (r/min) | Capacity (t/h) |
ASLGS-1020 | 3 | ZQ250 | 21 | 1-2 |
ASLGS-1030 | 3 | ZQ250 | 21 | 2-3 |
ASLGS-1240 | 4 | ZQ250 | 18 | 3-5 |
ASLGS-1540 | 5.5 | ZQ350 | 16 | 5-8 |
ASLGS-1560 | 5.5 | ZQ350 | 16 | 6-10 |
ASLGS-1870 | 7.5 | ZQ400 | 12 | 10-15 |
ASLGS-2080 | 11 | ZQ400 | 12 | 10-20 |
What materials are primarily screened by a fertilizer drum screening machine? What applications are they suitable for?
Organic fertilizer drum screening machines are used to grade materials throughout the entire organic fertilizer production process. They can process fermented, decomposed organic fertilizer, unfermented raw materials, and finished organic fertilizer granules. Suitable applications include raw material pretreatment in small and medium-sized organic fertilizer plants, removal of impurities (such as rocks, plastic, and uncomposted lumps) after fermentation, and particle size grading of finished organic fertilizer. They can also be used to screen similar materials such as biofertilizer and compound organic fertilizer.
What is the maximum screening efficiency of this equipment? What factors affect it?
The effective screening efficiency of a conventional organic fertilizer drum screening machine can reach 85%-95%, which is specifically affected by three factors:
Material characteristics: moisture content and particle uniformity;
Equipment parameters: drum speed and screen aperture;
Operation method: Whether the feed rate is uniform and whether the screen is cleaned regularly.
Due to the moisture and viscosity of organic fertilizer materials, there is a risk of screen clogging
after long-term use. However, this can be prevented and cleaned in three ways:
1. Preventive measures: Use a machine with Equipment with "anti-clogging designs" (e.g., cleaning brushes installed inside the drum to automatically clean the screen mesh during operation) should be used to break up large lumps of material before feeding; and the material moisture content should be controlled within a reasonable range.
2. Blockage Cleaning: For minor blockages, the machine's built-in cleaning device (such as a brush or pinball) can be activated, along with reverse airflow for auxiliary cleaning. For severe blockages, the machine should be shut down and then cleaned manually with a high-pressure water jet or a soft-bristled brush to avoid scratching the screen with hard tools.
Is the equipment complex to operate? Does it require specialized technicians?
The equipment is easy to operate and does not require specialized technicians. Ordinary workers can master it after 1-2 hours of training. The core operating steps are just three:
1. Before starting the machine: Check the screen, power supply, and lubrication, and adjust the feed conveyor speed.
2. During operation: Observe the uniformity of the feed. If blockage or uneven screening occurs, adjust the feed rate or activate the cleaning device immediately.
3. After shutdown: Turn off the feed, wait until the material in the drum is completely drained, then shut down the machine and clean any remaining material.
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