Concrete Separating Device Outlet Restriction
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Solution Overview
Problem
Existing concrete crushing devices fail to effectively separate unhydrated cement, cement stone, sand, and gravel, resulting in low-value output with randomly crushed concrete mixtures.
Innovation Solution
A separating device with outlet restriction means and push-back mechanisms to prolong the residence time of crushed material between crusher members, reducing pressure and preventing excessive breakage, allowing for better separation of concrete components by adjusting the distance between crusher members and using rotatable drums, vibrating plates, or belt conveyors to control the outflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the outlet opening is made small to increase separation precision, then the manufacturing precision of crushed fractions improves, but the productivity decreases due to restricted outflow
Solution Approach 1:
The patent separates the outlet control function from the crushing chamber by introducing outlet restriction means (such as a gate or adjustable opening) below the outlet opening. This segmentation allows the outlet opening to be optimized for separation precision while the restriction means controls the outflow rate independently, resolving the contradiction between precision and productivity.
2Object-affected harmful factors
If the distance between crusher members is increased to reduce pressure and prevent excessive breakage, then the object-affected harmful factors decrease, but the manufacturing precision of crushed fractions worsens
Solution Approach 1:
The patent applies preliminary action by using push-back means to repeatedly push material back into the crushing zone before it can escape. This ensures that material receives sufficient crushing action at optimized pressure levels without excessive breakage, while still achieving the desired fraction size through multiple pass crushing rather than single-pass high-pressure crushing.
Solution Approach 2:
The combination of outlet restriction means and push-back means creates a continuous crushing action where material is repeatedly processed through the crushing zone. This continuous action allows for controlled pressure application that prevents excessive breakage while maintaining consistent fraction size production, as material undergoes multiple gentle crushing cycles rather than one aggressive crush.
3Manufacturing precision
If the residence time of material between crusher members is increased to improve separation quality, then the manufacturing precision improves, but the productivity decreases
Solution Approach 1:
The patent introduces dynamic control through adjustable outlet restriction means and push-back means that can be optimized for different material types and desired outputs. The residence time is dynamically controlled by adjusting the restriction opening size and push-back frequency, allowing optimization between separation quality and throughput rate depending on operational requirements, rather than being fixed in either direction.
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 device achieves a higher-quality output by separating concrete into its original components, enhancing environmental and economic value by preventing excessive breakage and allowing for better sorting of materials.
Implementation Method 1
concrete fractions to be produced drop in the direction of the outlet opening, wherein the crusher members define an outlet opening
Implementation Method 2
push back means are provided which drive matter situated between the crusher members in upstream direction
Implementation Method 3
The concrete is thus always pressed through the jaws moving toward each other, after which the crushing jaws move apart
Implementation Method 4
vibrating plates, or belt conveyors to control the outflow
Implementation Method 5
belt conveyors to control the outflow
Data Source
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AI summary
The present invention relates to a separating device for crushing concrete. The separating device comprises at least two crusher members (6,7) which, optionally in co-action with bounding elements situated adjacently of the at least two crusher members, define at their upper outer ends an inlet opening for concrete to be crushed and at their lower outer ends an outlet opening for crushed concrete or at least concrete fractions. The separating device further comprises a drive device adapted to move repetitively at least a part of one of the two crusher members in the direction away from and toward the other crusher member. Outlet restriction means ( 9 ) are provided under the outlet opening to limit an out flow of crushed concrete and/or concrete fractions. The invention further relates to a method for crushing and separating a composite material, in particular concrete, into original components.