Disk Pulverizer Counterweight for High-Speed Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing disk type pulverizers face challenges in achieving higher relative speeds between rotating disks, leading to deformation and instability, which hinders efficient pulverization and increases vibration, making it difficult to maintain a narrow gap and achieve high-speed rotation.
Innovation Solution
The disk type pulverizer incorporates a fundamental structure with a balance weight part on the pulverizing disk part opposite to the counter surface, which counteracts the bending moment caused by centrifugal force, allowing for higher speed rotation and maintaining a stable narrow gap between the disks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the relative speed between the pair of disks is increased to improve pulverization efficiency, then the pulverization performance is improved, but the disks undergo deformation and vibration increases, making it difficult to maintain stable high-speed rotation
Solution Approach 1:
A balance weight part is provided on the pulverizing disk part opposite to the counter surface to counteract the bending moment caused by centrifugal force during high-speed rotation. This counterweight compensates for the deformation tendency of the pulverizing disk part, enabling stable high-speed rotation while maintaining high relative speed between disks for efficient pulverization
2Productivity
If the minimum space in the second region is reduced to maintain a narrow gap for effective pulverization, then the pulverization effectiveness is improved, but the disks become unstable and deformed at high speeds
Solution Approach 1:
The balance weight part provides a counteracting force to the bending moment that would otherwise cause the pulverizing disk part to deform inward when the minimum space is reduced. This allows the narrow gap configuration to be maintained without compromising disk structural integrity during high-speed operation
Solution Approach 2:
The disk structure is differentiated into a central disk part and a pulverizing disk part with distinct functions. The pulverizing disk part is specifically designed with the balance weight part to handle the localized stresses in the narrow gap region, while the central disk part maintains overall structural stability
3Productivity
If the pulverizing disk part is designed to protrude for effective particle collision, then the pulverization performance is improved, but the bending moment increases causing warpage toward the disk rear surface
Solution Approach 1:
The balance weight part is specifically positioned to counteract the bending moment generated by the protruding pulverizing disk part. By providing mass opposite to the counter surface, it creates a counteracting moment that prevents the pulverizing disk part from warping toward the disk rear surface during rotation
Solution Approach 2:
The disk structure exhibits intentional asymmetry with the pulverizing disk part protruding on one side and the balance weight part on the other side. This asymmetric configuration allows the protruding portion to perform pulverization while the opposite portion provides counterbalancing moment to prevent warpage
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
This configuration enables the disk type pulverizer to operate at higher speeds with reduced deformation and vibration, ensuring stable rotation and efficient pulverization of raw material particles into finer sizes.
Implementation Method 1
the bending moment caused by centrifugal force
Implementation Method 2
the collision between the particles and the groove or the like, the collision between the particles, and the re-collision thereof
Implementation Method 3
Examples of the action of the external force on the pulverizing object in pulverizing include compression, impact, shearing, and friction
Data Source
AI summary
A disk type pulverizer including a pair of disks capable of high-speed rotation is provided. In the disk type pulverizer, a pulverizing object is supplied to a first region on a disk rotation shaft side in a space region between the pair of disks 2 and 3, a minimum space G1min in the first region of the space region is set to be wider than a minimum space G2min in a second region outside the first region of the space region, and a pulverizing part is formed in a part of a counter surface that corresponds to the second region. Each of the pair of disks 2 and 3 includes a central disk part on the first region side and a pulverizing disk part on the second region side, and the pulverizing disk part includes a balance weight part on a part on a side opposite to the counter surface.