Walnut Shell Pulverization via Integrated Vertical Multi-Stage Grinding
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Solution Overview
Problem
Current superfine pulverization technologies for walnut shells are inefficient, leading to uncontrollable particle sizes, nonuniform distributions, and complex, costly processes due to the hard texture of walnut shells, which limits the effective utilization of walnut shells in various applications.
Innovation Solution
A same-cavity integrated vertical high-speed multistage superfine pulverizing device that integrates coarse crushing, fine crushing, micro pulverization, and superfine pulverization stages, utilizing a double-channel sliding feeding device and a material lifting disc with wedge-shaped gaps, pneumatic impact micro pulverization, and airflow mill superfine pulverization to achieve uniform and precise particle sizing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional pulverization methods are used for walnut shells, then the hard texture of walnut shells makes pulverization difficult, but the particle size becomes uncontrollable and nonuniform
Solution Approach 1:
The pulverization process is segmented into four distinct stages: coarse crushing, fine crushing, micro pulverization, and superfine pulverization. Each stage uses specialized equipment (toothed rollers, hammer mills, jet mills, classification devices) to progressively reduce particle size with precise control at each step, transforming the uncontrollable single-stage process into a controlled multi-stage system.
Solution Approach 2:
The patent replaces conventional mechanical pulverization with pneumatic jet mill technology for the micro and superfine pulverization stages. High-speed airflow (supersonic jets) substitutes mechanical impact, enabling precise particle size control through aerodynamic forces rather than mechanical contact, thereby improving manufacturing precision while reducing mechanical complexity.
2Manufacturing precision
If walnut shells are pulverized to superfine levels for various applications, then the particle size reaches micron or submicron levels, but the processing efficiency is low and production requirements are not met
Solution Approach 1:
The patent implements a continuous pulverization system where walnut shells flow continuously through four sequential processing stages without interruption. The integrated design allows material to move continuously from coarse crushing through fine crushing, micro pulverization, and superfine pulverization, maintaining constant processing action and eliminating idle time between stages, thereby achieving both superfine precision and high productivity.
Solution Approach 2:
The patent merges four separate pulverization functions into a single integrated device. The coarse crusher, fine crusher, jet mill, and classification system are combined in one continuous processing line, allowing simultaneous operation of all stages and eliminating the need for multiple separate machines, thus improving both efficiency and precision.
3Manufacturing precision
If multiple separate devices are used for different pulverization stages, then each stage can be optimized, but the overall process becomes complex and costly
Solution Approach 1:
The patent combines four distinct pulverization devices (coarse crusher, fine crusher, jet mill, classification device) into a single integrated machine. The devices are arranged in sequence within one housing, sharing common support structures, drive systems, and material handling mechanisms, thereby reducing overall system complexity while maintaining the precision benefits of multiple stages.
Solution Approach 2:
The integrated device performs multiple functions within a single system: coarse crushing, fine crushing, micro pulverization, and superfine pulverization with classification. Each component is designed to serve its specific function while contributing to the overall multi-functional capability of the unified device, reducing the need for separate specialized equipment.
4Productivity
If walnut shells are discarded or incinerated instead of pulverized, then resource waste occurs, but the lack of efficient pulverization technology prevents utilization
Solution Approach 1:
The patent segments the walnut shell processing into progressive size reduction stages, transforming the undifferentiated waste material into uniformly sized superfine particles suitable for various applications. The four-stage process (coarse, fine, micro, superfine) systematically converts low-value waste into high-value standardized powder products, enabling resource utilization while ensuring particle uniformity.
Solution Approach 2:
The patent uses pneumatic jet mill technology to replace conventional mechanical pulverization for the final size reduction stages. This substitution enables production of uniform superfine particles (micron and submicron levels) from waste walnut shells, meeting the precision requirements for various applications while maximizing resource utilization efficiency.
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 compact structure, high efficiency, and precise control over particle size, reducing the complexity and cost of the pulverization process while improving the quality and uniformity of walnut shell superfine powder production.
Implementation Method 1
a material lifting disc, configured to uniformly lift the walnut shells by the centrifugal force generated by high-speed rotation
Implementation Method 2
the walnut shells slide down to a wedge-shaped gap of a first-stage coarse crushing region to be coarsely crushed
Implementation Method 3
The third-stage pneumatic impact micro pulverizing region performs high-speed collision on the finely crushed walnut shell particles
Implementation Method 4
The fourth-stage airflow mill superfine pulverizing region performs further collision and rubbing on the micro pulverized walnut shell particles through a high-speed airflow to realize superfine pulverization
Implementation Method 5
microparticles conforming to a particle size condition are attracted out through negative pressure attraction
Data Source
AI summary
The present invention discloses a same-cavity integrated vertical high-speed multistage superfine pulverizing device and method for walnut shells. The same-cavity integrated vertical high-speed multistage superfine pulverizing device for walnut shells includes a double-channel sliding type feeding device and a same-cavity integrated vertical pulverizing device. The same-cavity integrated vertical pulverizing device includes a material lifting disc and a same-cavity integrated vertical pulverizing barrel. A first-stage coarse crushing region, a second-stage fine crushing region, a third-stage pneumatic impact micro pulverizing region and a fourth-stage airflow mill superfine pulverizing region are disposed in the same-cavity integrated vertical pulverizing barrel. Walnut shells falling through the double-channel sliding type feeding device are uniformly lifted by the material lifting disc to a wedge-shaped gap of the first-stage coarse crushing region to be coarsely crushed, and coarsely crushed materials are finely crushed by the second-stage fine crushing region through a two-stage wedge-shaped direct-through gradually reducing gap. The third-stage pneumatic impact micro pulverizing region performs high-speed collision on finely crushed walnut shell particles, and walnut shell fine particles are carried by a high-speed airflow and are collided and violently rubbed to be pulverized. The microparticle grading is realized by the fourth-stage airflow mill superfine pulverizing region by using arc-shaped blades, and microparticles conforming to a particle size condition are attracted out through negative pressure attraction.