Banana Screen

Details Introduction

The JR banana screen is ideal for screening, dewatering, medium-density separation, desliming, and other processing operations involving coal, gravel aggregates, minerals, and various bulk materials. This series features customizable configurations—including varying screening areas, mesh aperture sizes, numbers of screen deck sections, and inclination angles—tailored to specific applications and throughput requirements. Available in single-deck and double-deck models, the working area ranges from 5.7 m² to 30.2 m². With over 20 primary specifications and models, this equipment meets the production demands of diverse mining operations and coal preparation plants.

Structure

The Banana vibrating screen consists primarily of a screen box, screen mesh, vibration exciter, damping springs, and a lower support frame. It utilizes a motor and an exciter as the vibration source. The exciter comprises an eccentric shaft, pulley, bearing, and bearing seat. Driven by the motor, the eccentric shaft rotates to generate centrifugal inertial force, thereby inducing vibration in the screen box.

Technical Characteristics

1. The banana sieve features high screening efficiency and significantly greater processing capacity than traditional grading screens, making it an advanced screening machine.

2. Vibrator: Utilizes the world-leading JR-type box vibrator with splash lubrication and a built-in oil channel within the housing to ensure comprehensive bearing lubrication. It employs high-precision helical gears and specialized bearings designed for vibratory equipment. The drain plug is magnetic, and an external transparent organic plastic sight glass allows for easy monitoring of the oil level. Special measures are taken to ensure smooth operation of bearings and gears; the vibrator noise level is below 75 dB, and the bearing temperature remains under 50°C.

3. The exciter beam adopts a three-I-shaped beam structure, overcoming the issue of weak force distribution in the center of conventional square beams. Equipped with reinforcing rib plates, it offers high rigidity and lightweight design, with stress relief treatment applied after welding.

4. The beam surface can be coated with a polyurethane protective layer, providing resistance to erosion and abrasion for extended service life.

5. Shaped cutting and drilling of the side plates are performed by high-precision CNC machines to ensure dimensional accuracy. The side plates feature no weld seams to avoid stress concentration, thereby preventing cracking.

6. The screen surface can be secured using two methods: a middle rail seat design with polyurethane-pressed wood at both ends, or a middle-pressure plate design with polyurethane-pressed wood at both ends. Both configurations support the installation of either polyurethane or stainless steel screen surfaces, offering users flexible options tailored to their specific requirements.

7. A robust feeding box is engineered with sufficient strength, rigidity, and length to mitigate the impact of large material chunks or improper feed chute designs. This prevents large pieces from falling directly onto the screen surface, thereby avoiding premature wear and damage.

8. Key components are joined using torsion shear-type high-strength bolts, ensuring reliable connections while facilitating easy maintenance.

9. Main structural components are fabricated from Q245R, a specialized pressure vessel steel known for its excellent impact toughness, cold bendability, and weldability.

10. Every screening machine undergoes an 8-hour no-load test prior to shipment to guarantee safe and reliable operation.

11. Steel coil springs are utilized to dampen vibrations, effectively minimizing the dynamic load exerted by the screening machine on the foundation.