Backwash Suction Device With Pattern Roller For Fibrous Filter
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Solution Overview
Problem
The existing backwash suction devices for fibrous filters limit filtration performance due to the flat pressing of fleeces against the disc-type filter, which restricts the filtration area and increases the number of filters needed, thereby increasing manufacturing and maintenance costs.
Innovation Solution
A backwash suction device with an incised surface on the suction plate and a pattern roller mounted in the incised surface to form patterns on the fleece surface, increasing the filtration area and efficiency by creating a space for the fleeces to form patterns as they pass through the slit, including spline, annular, and lattice-shaped patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the suction plate presses the fleeces flat against the disc-type filter, then the structure is simple and easy to manufacture, but the filtration area is limited and filtration efficiency decreases
Solution Approach 1:
The invention transitions from a flat 2D pressing surface to a 3D patterned surface by forming protrusions and recesses on the suction plate. This dimensional change allows the fleeces to conform to the patterned surface, effectively increasing the filtration area without requiring a larger filter diameter, thus resolving the contradiction between structural simplicity and filtration efficiency.
Solution Approach 2:
The suction plate incorporates curved or rounded protrusions instead of flat surfaces. These curved elements create three-dimensional contact points with the fleeces, increasing the effective filtration area while maintaining manufacturing feasibility through standard molding or machining processes.
2Productivity
If multiple disc-type filters are mounted to increase filtration area, then the filtration efficiency increases, but the manufacturing cost and maintenance cost increase
Solution Approach 1:
Instead of adding more filters (increasing the number of components), the invention maximizes the utilization of a single filter by creating three-dimensional patterns on the suction plate. This approach achieves increased filtration area within the same physical footprint, avoiding the complexity and cost associated with multiple filters.
Solution Approach 2:
The invention combines multiple functional elements (protrusions, recesses, and filtration surfaces) into a single integrated suction plate structure. This consolidation achieves the equivalent filtration capacity of multiple filters while reducing the overall system complexity and component count.
3Ease of manufacture
If the suction plate is pressed against the disc-type filter without patterns, then the manufacturing cost is low, but the filtration area is limited
Solution Approach 1:
The suction plate features curved protrusions that can be formed through standard molding or machining techniques. These curved elements increase the filtration area by creating three-dimensional contact surfaces with the fleeces, while remaining compatible with conventional manufacturing processes to control production costs.
Solution Approach 2:
The suction plate surface is segmented into multiple protrusions and recesses, effectively dividing the filtration function across multiple zones. This segmentation increases the total filtration area without requiring a proportional increase in the overall plate size or manufacturing complexity.
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 solution increases the filtration area and efficiency of the fibrous filter, allowing for better removal of suspended matter and reducing the volume and installation site requirements of the filter, while maintaining pattern integrity between the suction plate and disc-type filter.
Implementation Method 1
a fibrous filter includes fiber (fleeces) on a surface of a disc-shaped filter so as to filter out foreign matter using the fleeces while contaminated water or the like passes through the fiber and flows into the disc-type filter
Implementation Method 2
a backwash suction device configured to suction and remove foreign matter stuck to a surface of a fibrous disc filter using a backwash manner
Data Source
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AI summary
An incised surface is formed in one surface of a suction plate on the basis of a slit and a pattern roller is placed in a room, which is provided at a thickness part of the slit in which the incised surface is formed, to rotate in place so that the pattern roller partially protrudes outward from the incised surface and forms patterns on a surface of fleeces which are backwashed while passing through the slit so as to increase a filtration area of the fleeces. Also, since the room is formed to be spaced at a certain distance apart from the slit in the incised surface, backwash may be performed and the filtration area of the fleeces may be increased using the room so as to further increase filtration efficiency of a fibrous filter. Also, spline-shaped patterns including splines cut to a certain length, patterns including several annular protrusions formed on an outer circumference of the pattern roller, spline-shaped patterns formed on the outer circumference, lattice-shaped patterns including repeated uneven parts, and the like may be formed on a surface of the pattern roller.