Electromagnetic Vibrating Feeder for Aggregate Production Line

5 month ago

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Henan Zhongyu Dingli Intelligent Equipment Co., Ltd.

9 month

Product details

Dual-vibrator strong screening, near-zero blinding rate

Vibrating Screen Equipment Overview

The circular vibrating screen is a key equipment for finished product classification in sand and gravel aggregate production lines. It accurately separates crushed materials into different size fractions – such as 5–10mm, 10–20mm, 20–31.5mm – for direct loading and sale. This equipment is specifically designed for materials with high heterogeneity and a wide particle size range. It features a through-shaft main shaft, dual vibrators, and SKF bearings, combined with a modular screen box and polyurethane wear-resistant liners. It offers strong exciting force, low blinding rate, low noise, and easy maintenance, making it a highly efficient choice for finished product screening in aggregate plants and quarries.

Vibrating Screen Equipment Highlights

Large-Capacity Oil-Bath Lubrication: Oil tank capacity exceeds 20 liters. Circulating lubricating oil provides both lubrication and heat dissipation. Oil change interval: 1,000–1,500 hours (only every 3–4 months under 10 hours/day operation). No daily oil level check required, greatly reducing maintenance frequency.

Through-Shaft Design + External Eccentric Blocks: A single through-shaft runs the entire length of the screen box, eliminating intermediate couplings and drive belts, reducing failure points and ensuring smooth operation. Eccentric blocks are externally adjustable – adding or removing counterweights changes the exciting force from ground level without disassembling the shaft, adapting to different materials and screening requirements.

Dual Vibrators + Modular Screen Box: Dual vibrators provide far greater exciting force than a single vibrator, causing material to bounce higher and move faster across the screen. Wide-graded mixed materials are less likely to blind the screen, allowing continuous production without frequent stops for cleaning. The modular welded screen box has high strength. Changing screen mesh requires only opening the side plates or end cover, pulling out the old mesh, and inserting the new one – completed in minutes.

SKF Bearings + Polyurethane Liners: SKF bearings are reliable and durable. Feed and discharge chutes are formed from one-piece bent manganese steel plates, with an inner polyurethane wear-resistant layer for double protection. Polyurethane strips are added to the screen mesh support plates, eliminating metal-to-metal friction, reducing noise, and preventing material from getting trapped and causing wear.

Vibrating Screen Application Scenarios

Aggregate Plant Finished Product Screening: Sizing crushed stone for loading.

Quarry Sand & Gravel Classification: Supplying finished products directly to batching plants or road construction.

Coarse Material Screening: Construction waste recycling, desert mixed sand/gravel classification.

Large-Scale Aggregate Production Lines: Continuous operation, low blinding, easy maintenance.

Vibrating Screen Process Flow

Finished Aggregate Screening Process:

The mixed material after crushing is evenly fed into the circular vibrating screen by a belt conveyor. Under the strong exciting force of the dual vibrators, the material bounces rapidly along the screen surface. It is separated layer by layer according to screen mesh openings into different finished fractions (e.g., 5–10mm, 10–20mm, 20–31.5mm). Each fraction is discharged through its own outlet directly for loading. Undersized fine particles are recovered by a fine sand recovery device, while oversized material is returned to the crusher for re-crushing. The entire line achieves high screening efficiency and low blinding, ensuring continuous production without downtime.

Services

Solution Design: Customize screen deck quantity, mesh configuration, and exciting force parameters based on material characteristics, target capacity, and finished product specifications.

Equipment Manufacturing: Precision machining of the through-shaft, assembly to SKF bearing standards, modular screen box welding and quality inspection, no-load trial operation before delivery.

Installation & Commissioning: On-site engineering installation, exciting force adjustment via eccentric blocks, oil filling and commissioning of the oil-bath lubrication system, material trial operation until screening standards are met.

Operation & Maintenance Trusteeship: Provide remote monitoring, oil change reminders, screen mesh wear alerts and replacement guidance, and train customers to adjust eccentric blocks and change screen mesh independently.

Vibrating Screen Project Case

Project: Finished Aggregate Screening Line in Sarawak, Malaysia

Customer: Local large quarrying group

Configuration: Double-deck circular vibrating screen + belt conveyors + fine sand recovery device

Capacity: 500 t/h of limestone aggregate screening, feed size 0–40mm, finished products divided into four fractions: 0–5mm, 5–10mm, 10–20mm, 20–31.5mm

Results: After commissioning, the dual vibrator configuration achieved an extremely low blinding rate, with continuous operation for 72 hours without stopping to clean the screen. The oil change interval reached 4 months. Screen mesh change time was reduced from 2 hours to 15 minutes. The customer reported that screening efficiency increased by approximately 40% compared to the previously used single-vibrator equipment, and the product gradation pass rate increased from 82% to 97%. The customer has recommended this equipment to affiliated quarries.

Technical parameters:

Model	Feed size(mm)	Passing Capacity(t/h)
DLZGC0938	≤500	150-200
DLZG1223 (under-silo)	≤300	400-500
DLZGC1238	≤750	250-400
DLZGC1250P	≤750	250-500
DLZG1550	≤1000	400-1000
DLZGC2050	≤1200	800-1600
DLZGC2260	≤1200	1800-2200
DLZGC2560	≤1600	2000-3000

Vibrating Screen FAQ

Q1: Is the circular vibrating screen prone to blinding when processing mixed aggregates containing fines and clay?

The equipment is equipped with dual vibrators providing strong exciting force, causing material to bounce higher and move faster on the screen surface. Even when feed contains both fines and large particles, the blinding rate is very low. Aggregate Quarry Sand Screening Machine Combined with polyurethane elastic screen mesh, material adhesion is effectively reduced, ensuring continuous production without downtime.

Q2: How is the exciting force of the circular vibrating screen adjusted for different materials?

The eccentric blocks are externally designed – adding or removing counterweights changes the exciting force. Adjustment is performed at ground level without disassembling the shaft or stopping the machine. Vibrating Screen Finished Sand Equipment The engineer presets the optimal exciting force during commissioning based on material characteristics, and customers can make fine adjustments later on their own.

Q3: Is bearing maintenance frequent for the multi-deck circular vibrating screen? What is the oil change interval?

The equipment is equipped with a large-capacity (over 20 liters) oil-bath lubrication system. The circulating oil provides both lubrication and heat dissipation. The oil change interval is 1,000–1,500 hours – based on 10 hours/day operation, only 3–4 months between changes. Vibrating Screen for Aggregate Processing No daily oil level checks are required, greatly reducing maintenance frequency and labor costs.

For a tailored circular vibrating screen selection solution, screen mesh configuration, and quotation, please contact our engineering team for one-stop delivery from process design to operation and maintenance trusteeship.