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Green Coffee Bean Vibrating Screen

Green Coffee Bean Vibrating Screen a screen is a sieving machine used in coffee processing to grade and remove impurities from green coffee beans. It's a key processing device for green coffee beans from harvesting and hulling to roasting. It specifically addresses impurities, broken beans, and shriveled beans mixed in with green coffee beans. Through a rational structural design, it adapts to the particle characteristics of green coffee beans, avoiding damage to the beans during sieving and achieving orderly separation of materials. This lays the foundation for subsequent roasting and grinding stages. The product supports non-standard customization, allowing for customization of the inlet and outlet shape and size, as well as the overall height of the equipment, in conjunction with upstream and downstream equipment. It supports 24-hour uninterrupted operation and is suitable for industrial-grade production.

What is the function of a Green Coffee Bean Vibrating Screen?

The core function of a Green Coffee Bean Vibrating Screen is to grade and remove impurities from harvested green coffee beans, thereby optimizing coffee bean quality. It effectively removes impurities such as soil, pebbles, and broken leaves from green coffee beans, while separating beans of varying sizes according to their particle size, discarding shriveled and broken beans to ensure that the coffee beans entering the next processing stage are uniform in size and purity. This process ensures that each coffee bean is heated evenly during subsequent roasting, avoiding uneven roasting caused by differences in particle size, preserving the original flavor of the coffee bean, reducing flavor loss, and minimizing losses during subsequent processing, resulting in a more consistent taste in the final coffee product.

Green Coffee Bean Vibrating Screen Structure

The Green Coffee Bean Vibrating Screen has a simple and rationally laid-out structure, mainly consisting of three parts: a sieving device, a vibrating device, and a support device. The screening device includes a screen frame, screen mesh, dust cover, and discharge port. Different screen mesh sizes can be replaced as needed. The dust cover prevents dust and material splashing during screening. The core of the vibration device is a vertical vibrating motor with eccentric weights at both ends of the motor shaft, providing the power for vibration. The support device consists of damping springs and a base cylinder. The damping springs effectively isolate vibration, reduce noise during operation, and ensure stable operation. All components work together to ensure a smooth and orderly screening process.

How does the Green Coffee Bean Vibrating Screen work?

The Green Coffee Bean Vibrating Screen operates based on three-dimensional vibration. A vibrating motor drives eccentric weights to vibrate, causing the screen body to undergo a combination of horizontal, vertical, and inclined movements. After starting the equipment, the vibrating motor rotates the weights, transmitting the vibration force to the screen surface. This causes the green coffee beans to be thrown up on the screen mesh and diffuse outwards from the center. During operation, coffee beans that meet the screen specifications fall through the sieve holes into their corresponding grade, while impurities and substandard beans remain on the sieve surface and are ultimately discharged through different outlets. This process achieves the grading and impurity removal of green coffee beans.

Green Coffee Bean Vibrating Screen Technical Specifications

Model Diameter
(mm)
Feeding Size
(mm)
Frequency
(RPM)
Layers Power
(kw)
Capacity
(kg/h)
DH-400 400 <10 <1500 1-5 0.18 100
DH-600 600 0.25 200
DH-800 800 0.55 500
DH-1000 1000 0.75 800
DH-1200 1200 1.1 1200
DH-1500 1500 1.5 1800
DH-1800 1800 2.2 2000

How many sieves can be installed on the Green Coffee Bean Vibrating Screen at a time?

The Green Coffee Bean Vibrating Screen can install 1-5 sieves at a time. The specific number of sieves can be flexibly selected according to actual processing needs to adapt to different grading standards. Single-layer screens are primarily used for simple impurity removal, filtering out large particles from green coffee beans. They are suitable for small-scale processing scenarios where grading requirements are not high. Two- to three-layer screens can achieve preliminary grading, separating coffee beans into two to three sizes to meet standard processing needs. Four- to five-layer screens enable finer grading, simultaneously separating one type of green coffee bean into multiple different particle sizes, meeting the stringent requirements for particle uniformity in high-end coffee processing. These screens are also easy to install, and the number of layers and screen size can be adjusted as needed, making them highly adaptable.

How to choose the mesh size for a Green Coffee Bean Vibrating Screen?

Grade Green Coffee Bean Particle Size Range (mm) Corresponding Mesh Size (mesh) Suitable Scenarios
Level 1 ≥8.0 8 Screening large green coffee beans, removing oversized impurities
Level 2 6.0-8.0 10 Standard large-bean grading, suitable for coarse processing scenarios
Level 3 4.5-6.0 14 Medium-bean grading, meeting standard processing needs
Level 4 3.0-4.5 20 Fine grading, suitable for pre-processing of mid-to-high-end coffee
Level 5 2.0-3.0 28 Sorting of small coffee bean particles, removing broken beans and small impurities
Level 6 <2.0 30 Sieving out fine broken beans, powder, and tiny impurities

What is the price of a Green Coffee Bean Vibrating Screen?

The price range for Green Coffee Bean Vibrating Screens manufactured by DaHan Vibrating Machines is $800.00-$4,500.00. A detailed quote requires consideration of materials, grading, configuration, and regional shipping costs. The number of screen layers, equipment configuration (such as whether a screen cleaning device is included), and motor power will all affect the price; more layers and more comprehensive configurations will result in a higher price. Furthermore, regional shipping costs and customization requirements will also influence the final quote. To obtain a detailed and accurate quote, please provide your specific material, configuration, grading requirements, and delivery location. We will recommend suitable models and provide a detailed price list based on your needs.

The Green Coffee Bean Vibrating Screen is a core piece of equipment in coffee pre-processing. It optimizes coffee bean quality through grading and impurity removal functions. Its reasonable structure and stable operation, with 1-5 screen layers, can flexibly adapt to different processing needs. The price varies depending on factors such as materials and configuration.

Monday April-13 2026  15:18:45
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