Belt Press With Multi-Wrap Filter Cloths for High-Pressure Dewatering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional belt presses for dewatering are large, costly, and inefficient due to the use of multiple rolls and complex pressure applying devices, resulting in low pressure and short dewatering time, which leads to inadequate filtering performance and side leaks.
Innovation Solution
A compact belt press design featuring a pair of filter cloths wound around a center roll multiple times, utilizing the tension of the filter cloths as a pressing force, with intermediate members to apply pressure gradually and reduce friction, allowing for high-pressure dewatering without side leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If many rolls are arranged vertically and horizontally to increase dewatering time, then dewatering time is sufficient, but apparatus size becomes large
Solution Approach 1:
The filter cloth is wound around the center roll multiple times in a nested configuration, with each wrap creating additional contact length within a compact radial space. This allows the filter cloth to remain in contact with the roll for an extended period (sufficient dewatering time) without requiring a large linear arrangement of rolls, thereby achieving compact apparatus size while maintaining adequate dewatering duration
Solution Approach 2:
Instead of extending dewatering time by arranging rolls in a linear sequence (one-dimensional extension), the invention utilizes the radial dimension by winding the filter cloth multiple times around the center roll. This transforms the problem from a linear space-consuming approach to a radial compact configuration, achieving sufficient contact time within a small footprint
2Force
If a pressure applying belt or large-diameter roll is used to apply pressure, then pressing force is sufficient, but device complexity and cost increase
Solution Approach 1:
The filter cloth itself serves as the pressure applying mechanism through its tension. When the filter cloth is wound around the center roll multiple times and tensioned, it automatically applies sufficient pressing force to the sludge without requiring external pressure applying belts or large-diameter rolls. This self-service approach eliminates complex pressure applying devices while maintaining adequate pressing force
Solution Approach 2:
The invention extracts and eliminates the complex pressure applying belt and large-diameter roll components from the system. By using only the essential center roll with multiple filter cloth wraps, the design removes unnecessary complex elements while retaining the core function of applying pressing force through filter cloth tension
3Stress or pressure
If pressure is applied abruptly at the pressure applying roll, then high pressure is achieved, but side leak occurs
Solution Approach 1:
The filter cloth is tensioned and prepared in advance through multiple wraps around the center roll before the actual dewatering process begins. This preliminary configuration ensures that pressure is distributed evenly and gradually along the entire contact length of the filter cloth, preventing abrupt pressure application that would cause side leaks while still achieving the necessary high pressure for effective dewatering
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 design achieves efficient high-pressure dewatering with sufficient dewatering time, reducing the need for multiple rolls and minimizing costs, while ensuring ideal dewatering without side leaks by gradually increasing pressure and extending dewatering time.
Implementation Method 1
utilizing tension of the pair of filter cloths as pressing force of a pressure applying mechanism
Implementation Method 2
squeeze and dewater sludge supplied between filter cloths of the pair of filter cloths
Data Source
AI summary
A pair of filter cloths is wound around a first roll a plurality of times by being wound around the first roll, then being wound around a second roll to return to a space between the first roll and the pair of filter cloths wound around the first roll, and being wound around the first roll again. The pair of filter cloths wound around the first roll the plurality of times applies a pressing force to the first roll.