Helical Cam Disk Crusher for Recycled Aggregate Cleaning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing apparatuses for removing adhered substances from recycled concrete aggregates are inefficient and limited in their ability to handle contaminants, affecting the properties of recycled concrete products.
Innovation Solution
The apparatus employs a configuration of non-circular disks with cams forming a helical shape, mounted on a shaft, to efficiently force material through the housing, capable of both removing adhered substances and crushing materials, including asphalt and other waste products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional circular disks are used in the apparatus, then the structure is simple and easy to manufacture, but the material treatment efficiency and crushing capability are insufficient
Solution Approach 1:
The patent applies asymmetry by replacing conventional circular disks with non-circular disks featuring cam profiles. These asymmetric disks create varying radial distances from the rotation axis, generating dynamic crushing forces and improving material treatment efficiency while maintaining a relatively simple overall apparatus structure.
Solution Approach 2:
The cam profiles on the non-circular disks utilize curved geometric shapes that vary the radial distance continuously during rotation. This curvature design enables smooth material feeding and crushing actions, enhancing productivity while the curved geometry can be manufactured using standard machining processes.
2Adaptability or versatility
If the apparatus is designed only for removing adhered substance, then the design is simple, but it cannot perform crushing or pulverizing functions
Solution Approach 1:
The non-circular disks with cam profiles serve multiple functions simultaneously: they feed material through the housing, crush aggregates, and remove adhered substances. This multi-functionality is achieved within a single apparatus design, eliminating the need for separate crushing and cleaning equipment while maintaining design simplicity.
Solution Approach 2:
The patent merges the functions of material feeding, crushing, and contaminant removal into a single integrated system. The non-circular disks perform all these operations in sequence as material passes through the housing, combining multiple processes that would traditionally require separate apparatuses.
3Productivity
If circular disks are used without cam profiles, then the manufacturing is simple, but the material forcing through the housing is inefficient
Solution Approach 1:
The cam profiles utilize curved geometric designs that create the necessary varying radial forces to efficiently force material through the housing. These curved profiles can be manufactured using standard CNC machining or molding processes, balancing manufacturing ease with functional effectiveness.
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 apparatus effectively treats materials by forming a helical path, enhancing the removal of adhered substances and crushing capabilities, improving the quality of recycled aggregates for new concrete production.
Implementation Method 1
the cam of each successive non-circular disk is shifted with respect to the cam of its preceding non-circular disk in a rotational direction about the axis of rotation such that the cams form a helical shape about the axis of rotation
Implementation Method 2
a plurality of circular disks which are each eccentrically mounted on the shaft and located behind each other inside the housing
Data Source
Figure 1~4
Figure 5~7
AI summary
An apparatus (1) for removing adhered substance from particulate material, such as cement paste from particulate material of recycled concrete aggregate, or for crushing material, comprises a housing (2) including an inlet (3) for introducing untreated particulate material into the housing (2) and an outlet (4) for discharging treated particulate material from the housing (2) The inlet (3) and the outlet (4) are located at a distance from each other. The apparatus also comprises a shaft (5) which is mounted to the housing (2) and rotatable with respect to the housing (2) about an axis of rotation (6), a driving member (7, 8) for driving the shaft (5) about its axis of rotation (6), a plurality of circular disks (9) which are each eccentrically mounted on the shaft (5) and located behind each other inside the housing (2). The centre of each successive circular disk (9) is shifted with respect to the centre of its preceding circular disk (9) in a rotational direction about the axis of rotation (6). The apparatus (1) comprises a plurality of non-circular disks (11) which are each provided with a cam (12) on its outer circumference. The non-circular disks (11) are mounted on the shaft (5) and located behind each other inside the housing (2). The cam (12) of each successive non-circular disk (11) is shifted with respect to the cam (12) of its preceding non-circular disk (11) in a rotational direction about the axis of rotation (6) such that the cams (12) form a helical shape about the axis of rotation (6).