Horizontal Jaw Crusher Minimizing Fine Material
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Solution Overview
Problem
Existing jaw-type crushers experience excessive wear and tear due to additional weight from frangible materials, produce excessive fine material that is not reusable, and have inefficient material flow due to vertical orientation.
Innovation Solution
A nearly horizontal jaw crusher system with a stationary cover and drive mechanism that moves the jaw in multiple directions to reduce material size and self-relieve wedged material, using a conveyor system to capture and transport crushed material, minimizing fine material production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If material is placed on eccentrically mounted rotatable jaws driven by motors, then crushing function is achieved, but wear and tear on the jaw increases due to additional weight
Solution Approach 1:
The patent inverts the traditional jaw crusher design by making the jaw stationary and the feed pan movable. This reverses which component carries the material weight during operation, transferring the weight burden from the jaw to the feed pan and support structure, thereby reducing wear on the jaw while maintaining crushing effectiveness
Solution Approach 2:
The patent extracts the crushing function from the jaw itself and relocates it to the feed pan. The jaw becomes a stationary support structure while the feed pan performs the actual crushing through its reciprocating motion, separating the weight-bearing function from the crushing function
2Manufacturing precision
If material remains engaged with jaws until small enough to fall away, then complete size reduction is achieved, but fine material production increases
Solution Approach 1:
The patent implements dynamic control of the feed pan's reciprocating motion to optimize material discharge timing. By controlling the pan's movement cycles, material is discharged at optimal moments before excessive size reduction occurs, preventing over-crushing and fine material generation while maintaining effective size control
Solution Approach 2:
The rapid reciprocating motion of the feed pan creates a skipping action where material is quickly processed and discharged. This rushing through the crushing zone prevents material from remaining in contact with crushing surfaces for extended periods, thereby reducing fine material production while achieving adequate size reduction
3Productivity
If vertical orientation is used in traditional jaw crushers, then compact structure is achieved, but material flow efficiency decreases
Solution Approach 1:
The patent transitions from vertical to horizontal orientation, fundamentally changing the spatial dimension of material flow. This horizontal arrangement allows gravity to assist material movement along the feed pan's reciprocating path, improving flow efficiency and reducing the need for complex vertical support structures
Data Source
AI summary
A system including a nearly horizontal jaw movable to reduce a size of frangible material, a stationary cover around a top side of the jaw, an area is defined between an outer surface of the jaw and an inner surface of the cover, and a drive mechanism to cause the jaw to move to vary the area between the cover and the jaw to reduce the size of frangible material within the area. Another system and method are also disclosed.