Chute-Shaped Vibrating Screen With Stationary Deck Support
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Solution Overview
Problem
Existing vibrating screens for aggregates and soils require high energy consumption and operating power due to the need to lift the entire material for screening, and their efficiency is limited by the absence of a stationary screening deck and planar vibrating decks.
Innovation Solution
A vibrating screen design incorporating a chute-shaped stationary and vibrating screening decks with eccentric shafts, where the vibrating flat bars move in screening slots, supported by a stationary deck, reducing energy consumption by lifting different parts of the material at different times and enhancing screening efficiency through a circular motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a planar vibrating screening deck is used to screen aggregates and soils, then the entire material must be lifted up at once during each vibration impact, but this results in high energy consumption and high required operating power
Solution Approach 1:
The screening deck is segmented into stationary and vibrating parts, with the vibrating deck divided into multiple sections that can lift different parts of the material at different times. This segmentation allows partial lifting rather than lifting the entire material mass simultaneously, directly reducing energy consumption while maintaining screening productivity.
Solution Approach 2:
The screening system transitions from a static planar deck to a dynamic chute-shaped vibrating deck that performs circular motion. The vibrating deck is supported by eccentric shafts that create controlled dynamic movement, allowing material to be lifted and rotated in a circular path, improving screening efficiency while reducing the energy required compared to lifting entire material loads.
2Productivity
If a planar vibrating screening deck without a stationary screening deck is used, then the vibrating feature is provided, but the screening efficiency is limited due to absence of material support and rotation
Solution Approach 1:
The invention merges a stationary screening deck with a vibrating screening deck into a unified chute-shaped structure. The stationary deck provides stable material support while the vibrating deck adds dynamic screening action. Both decks work together in the same chute-shaped space, combining the benefits of stability and vibration without requiring separate systems, thus improving screening efficiency without proportionally increasing complexity.
Solution Approach 2:
The chute-shaped stationary screening deck serves multiple functions: it provides structural support for the material, defines the screening space, and works in conjunction with the vibrating deck. The same chute structure serves as both the stationary support framework and the guide for the vibrating deck's circular motion, reducing overall structural complexity while enhancing screening performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design reduces energy consumption and required operating power while improving screening efficiency by utilizing a stationary deck to support material temporarily, allowing partial lifting and rotational movement, thus decreasing energy requirements and increasing screening capacity.
Implementation Method 1
The vibrating feature of the screen is provided by a chute shaped vibrating screening deck which is arranged in a connection with a stationary screening deck so that the stationary screening flat bars and the vibrating flat bars of the vibrating screening deck are next to each other and one after the other
Implementation Method 2
when the eccentric shafts rotating. The vibrating screening deck includes vibrating flat bars, which form second screening slots between them, and whose curved shape corresponds to the chute shape of the vibrating screening deck
Data Source
AI summary
A vibrating screen for screening aggregates and/or soils. The screen includes a body, a chute shaped stationary screening deck, fixed to the body by its opposite ends. The stationary screening deck includes stationary screening flat bars, which form first screening slots between them, which have a curved shape corresponding to the shape of the stationary screening deck. The screen includes a chute shaped vibrating screening deck, which is supported to the body by eccentric shafts. The vibrating screening deck is arranged to be vibrated by machine power by rotating the eccentric shafts synchronously with each other, each point of the screening deck is in revolving motion continuously in the same rotating direction along a circular path when the eccentric shafts rotating. The vibrating screening deck includes vibrating flat bars, which form second screening slots between them and whose curved shape corresponds to the chute shape of the vibrating screening deck.