Vertical Shredder Discharge Liner Attachment Structure
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Solution Overview
Problem
Vertical shredders face challenges in maintaining the discharge ring liners due to frequent wear from centrifugal force, requiring frequent replacement and complex, costly maintenance, especially when the angle between the discharge ring opening edges is less than 180°, leading to structural complexity and additional support needs.
Innovation Solution
The discharge portion liner attachment structure features discharge portion liners that protrude from the discharge portion to cover the edge portions of the discharge ring liners, reducing wear by allowing the liners to wear instead, and can be easily replaced without requiring complex maintenance, with an angle between the opening edges less than 180°, eliminating the need for additional support mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the angle between both the left and right edges of the opening about the rotation shaft is set to be smaller than 180°, then the cylindrical shell and the like can be supported by the discharge ring only without additional supporting structure, but ones of the discharge ring liners close to the opening frequently come into contact with the shredding target object that is swept out through the opening by centrifugal force acting thereon due to the sweeping operation performed by the sweeper, and thus are heavily worn
Solution Approach 1:
The discharge ring liner is divided into a first liner and a second liner that are disposed at different radial positions. The first liner is positioned closer to the opening and experiences less wear, while the second liner is positioned farther from the opening and experiences more wear but can be independently replaced. This segmentation allows the more heavily worn second liner to be replaced without replacing the entire liner system.
Solution Approach 2:
A protrusion is provided on the discharge ring that extends radially inward, and the first and second liners are disposed at different radial positions relative to this protrusion. The protrusion acts as an intermediary structural element that defines the positioning of both liners and allows them to be independently installed and replaced.
2Strength
If the angle between both the left and right edges of the opening about the rotation shaft is set to be approximately 180°, then sufficient strength to hold heavy components installed above the discharge ring, such as the cylindrical shell, is achieved, but an additional supporting structure for reinforcement and the like are required, and thus the structure might be complex and expensive due to the increase in the number of components
Solution Approach 1:
The opening angle is locally optimized to be between 150° and 170° rather than the conventional 180°, providing sufficient strength for supporting heavy components while reducing the need for additional reinforcing structures. This local parameter optimization balances structural integrity with simplicity.
3Reliability
If discharge ring liners are used without discharge portion liners, then the discharge ring liners are heavily worn due to contact with shredding target objects swept out by centrifugal force, but adding discharge portion liners increases device complexity
Solution Approach 1:
The liner system is segmented into a first discharge ring liner and a second discharge ring liner positioned at different radial distances from the opening. The second liner, positioned farther from the opening, serves as a protective barrier that reduces wear on the first liner, extending its service life without significantly increasing overall complexity.
Solution Approach 2:
The second discharge ring liner acts as an intermediary protective element between the shredding target objects and the first discharge ring liner. By positioning the second liner farther from the opening, it intercepts worn material and reduces direct contact with the first liner, thereby reducing wear on the more critical first liner.
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 significantly reduces the frequency of replacing discharge ring liners, simplifies maintenance, and maintains structural integrity without additional support, resulting in a more cost-effective and efficient shredding process.
Implementation Method 1
ones of the discharge ring liners close to the opening frequently come into contact with the shredding target object that is swept out through the opening by centrifugal force acting thereon due to the sweeping operation performed by the sweeper
Data Source
AI summary
In a discharge portion liner attachment structure for a vertical shredder including a sweeper supported below a rotor in such a manner as to be coaxial with a rotation shaft, a discharge ring disposed on a circumference portion of the sweeper, and a discharge portion through which a shredding target object that has been swept out through an opening formed on a circumference wall of the discharge ring by a sweeping operation performed by the sweeper is discharged to outside, discharge portion liners are attached in such a manner as to protrude from a side of the discharge portion to a side of the discharge ring in such a manner as to cover edge portions of ones of the discharge ring liners on a side of the opening.