Straw Pellet Comminution via Rotating Disc and Stationary Block
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Solution Overview
Problem
Existing grain crushers designed for livestock feed preparation fail prematurely when used to crush straw pellets due to excessive mechanical stress, leading to a short service life and high maintenance costs.
Innovation Solution
A device with a comminution housing, a rotatable shaft, and a fixed comminution block with recesses, where comminution discs with teeth are used to shear straw pellets, reducing mechanical stress and enhancing the shredding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If motorized grain crushers are used to crush straw pellets, then the pellets can be effectively comminuted, but the device is subject to significantly higher mechanical stress leading to premature failure
Solution Approach 1:
The device divides the comminution function into separate components: a rotatable shaft with multiple comminution discs and a stationary comminution block with recesses. This segmentation allows the mechanical stress to be distributed across multiple discs and recesses rather than concentrated on a single crushing point, reducing wear and extending service life while maintaining effective comminution of straw pellets
Solution Approach 2:
Instead of using a traditional two-roller crushing mechanism where both components rotate, this invention uses one rotatable comminution disc and one stationary comminution block. The inversion of the stationary component reduces mechanical stress on the drive system and structural supports, improving reliability while achieving effective straw pellet comminution through the shearing action between the rotating disc and stationary block
2Productivity
If traditional crushing mechanisms are used, then straw pellets can be shredded, but the mechanical stress leads to high maintenance costs and frequent replacements
Solution Approach 1:
The invention extracts the comminution function from a single complex crushing mechanism and distributes it across multiple comminution discs and recesses. This allows individual discs or recesses to be replaced independently if worn, rather than replacing the entire crusher mechanism, significantly reducing maintenance costs and improving ease of manufacture while maintaining continuous shredding capability
Solution Approach 2:
The design allows comminution discs and recesses to be used until wear reduces effectiveness, then individually replaced or recovered. The modular structure enables selective replacement of only the worn components rather than the entire device, reducing maintenance costs and extending overall system life while maintaining effective straw pellet shredding
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 effectively shreds straw pellets with minimal mechanical load, extending the service life and reducing production costs while maintaining high efficiency.
Implementation Method 1
the pellets, in particular straw pellets, are sheared between the at least one comminution disc and the comminution block
Data Source
Figure 1
Figure 2a~2c
Figure 3
AI summary
Device (10) for comminuting pellets, in particular straw pellets, with the following features: • a comminution housing (14), • a shaft (22) with a shaft longitudinal axis (23), • at least one comminution disc (24) with a comminution section (26), and • a comminution block (28) fixedly arranged in the comminution housing (14) with at least one recess (30), wherein • the at least one comminution disc (24) is arranged on the shaft (22) in a rotationally fixed manner, and • the shaft (22) is mounted in the comminution housing (14) so as to be rotatable about the shaft longitudinal axis (23) such that by means of a rotation of the shaft (22) about the shaft longitudinal axis (23), the comminution section (26) of the at least one comminution disc (24) can be moved through the at least one recess (30) of the comminution block (28), and use of such a device (10) for crushing pellets, in particular straw pellets.