Screen Machine Diluent Pocket System for Paper Material Concentration
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Solution Overview
Problem
Existing paper screening machines face issues with raw material concentration, leading to clogging, increased energy consumption, reduced throughput, and decreased screening quality due to the accumulation of contaminants with high-quality acceptable raw materials.
Innovation Solution
The implementation of a screening machine with a screen basket and casing body that includes a diluent pocket system for controlled diluent supply and spray, preventing diluent leakage and allowing for efficient adjustment of diluent supply and spray functions, which helps in maintaining raw material concentration and reducing clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a screening machine operates without a diluent supply system, then the structure remains simple, but raw material concentration causes clogging and reduces throughput
Solution Approach 1:
The diluent supply system is segmented into multiple independent components: diluent pockets distributed around the screen basket, individual spray holes at different locations, and separate supply passages. This modular segmentation allows the system to be added without completely redesigning the screening machine, thus improving throughput while limiting overall structural complexity increase
Solution Approach 2:
A diluent (water or air) is introduced as an intermediary substance to prevent raw material concentration and clogging. The diluent acts as a mediator between the concentrated raw material and the screen surface, maintaining flowability and preventing adhesion without requiring fundamental changes to the screening mechanism
2Reliability
If diluent is sprayed to prevent raw material concentration, then clogging is reduced, but diluent may leak and be lost to other parts
Solution Approach 1:
Sealing members (gaskets or seals) are installed around the periphery of the screen basket where it connects to the casing body. These flexible sealing elements prevent diluent from leaking out of the screening chamber while allowing for thermal expansion and manufacturing tolerances, thus maintaining reliability without excessive diluent loss
Solution Approach 2:
The diluent supply and spray function is extracted as a separate, dedicated system with its own pockets, passages, and control mechanisms rather than being integrated into the main screening mechanism. This extraction allows independent optimization of diluent management and prevents interference with the primary screening function
3Productivity
If multiple spray holes are formed at different heights, then diluent can be sprayed effectively to concentrated raw material, but manufacturing complexity increases
Solution Approach 1:
The screen basket is designed with multi-functionality: it serves both as the screening surface and as the structural support for the diluent supply system. The flange portion of the screen basket integrates both the screening function and the diluent distribution function, reducing the need for separate components and simplifying manufacturing
Solution Approach 2:
Different regions of the screen basket are equipped with spray holes at different heights and orientations based on local requirements. Areas with higher raw material concentration receive more intensive spraying, while other areas have fewer or no spray holes. This localized optimization improves screening efficiency without requiring uniform complexity throughout the entire structure
4Reliability
If a seal is added to prevent diluent leakage, then diluent is contained properly, but device complexity and manufacturing difficulty increase
Solution Approach 1:
Simple, inexpensive sealing members such as rubber gaskets or basic seals are used around the screen basket periphery. These seals are easily replaceable and designed for straightforward installation and maintenance. By using simple, standardized sealing components rather than complex custom-designed sealing systems, the patent achieves reliable diluent containment while minimizing the increase in device complexity and manufacturing difficulty
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 solution increases throughput efficiency, reduces energy consumption, enhances screening quality, prolongs the lifespan of machine components, and minimizes the need for re-processing, thereby improving overall operation efficiency and reducing installation space requirements.
Implementation Method 1
a high-quality acceptable raw material passes through open screen surfaces, which may be perforated in various shapes, of screen baskets by the centrifugal force due to rotation of screen rotors
Implementation Method 2
the diluent pocket includes diluent spray holes for spraying the diluent, introduced into the space, inside or outside of the screen basket
Data Source
AI summary
A screen machine for resolving a raw material concentration phenomenon occurring in the screen machine, a casing body for the screen machine, and a screen basket. A diluent supplied through an external pipe enters a casing diluent pocket of a casing body. The diluent then enters a diluent supply path by passing through a diluent entrance of the screen basket through one or more casing diluent supply paths located in a casing upper flange and flows into a diluent pocket through a diluent exit of the screen basket by passing through the diluent supply path. The flowing diluent is sprayed onto a concentrated raw material through one or more open diluent spray holes formed on a spray surface of the diluent pocket. Since the concentrated raw material is diluted, the concentrated raw material can be lowered to a desired concentration, and problems of conventional screen machines can be resolved.