Filter Drum Cleaning Nozzle Recoil Rotation
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Solution Overview
Problem
Existing filter devices for removing impurities from liquids, such as wastewater, face inefficiencies in cleaning the filter surface, leading to clogged openings and reduced filtration performance, despite existing cleaning methods that spray liquids onto the surface.
Innovation Solution
A rotatably mounted filter drum with a cleaning system featuring a spray nozzle arrangement that moves in a cycloid path, combining linear and rotational movements to ensure thorough cleaning, with spray nozzles aligned to rotate due to recoil from the cleaning liquid pressure, allowing for efficient impurity removal and surface cleaning during filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a spray nozzle arrangement moves back and forth along a linear path to clean the filter surface, then the cleaning coverage is improved, but the cleaning thoroughness is insufficient due to the static spraying position
Solution Approach 1:
The spray nozzle is made dynamically movable by allowing it to rotate about its mounting axis while the carrier moves linearly back and forth. This dynamic adjustment of the spraying position ensures that cleaning fluid reaches all areas of the filter surface including hard-to-reach regions, thereby improving cleaning thoroughness while maintaining comprehensive coverage
Solution Approach 2:
The cleaning system transitions from a one-dimensional linear movement to a two-dimensional cleaning path by adding rotational movement of the spray nozzle. The nozzle rotates about its mounting axis while simultaneously moving linearly along the guide, creating a cycloidal motion pattern that expands the cleaning coverage and improves thoroughness by accessing areas that would be missed with linear movement alone
2Device complexity
If the spray nozzle is fixed in position during cleaning, then the device complexity is reduced, but the cleaning performance is insufficient
Solution Approach 1:
The spray nozzle utilizes the pressure of the cleaning fluid itself to generate rotational movement through recoil force. The reaction force from the sprayed fluid causes the nozzle to rotate about its mounting axis automatically, eliminating the need for complex external drive mechanisms while maintaining high cleaning performance through enhanced fluid distribution
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 approach enhances cleaning performance and filtration efficiency by ensuring all areas of the filter surface are thoroughly cleaned, maintaining high filtration performance and preventing clogging, with the ability to alternate between filtration and cleaning processes.
Implementation Method 1
spray nozzles aligned to rotate due to recoil from the cleaning liquid pressure
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a device for removing impurities from a liquid, preferably wastewater, comprising a rotatably mounted filter drum (2) having a filter surface (1), a drum drive (3) operatively connected to the filter drum (2) for rotating the filter drum (2) about an axis of rotation (4), and a cleaning system (5) for cleaning the filter surface (1), wherein the cleaning system (5) comprises a guide (6), preferably designed as a linear guide, and a spray nozzle arrangement (8) that can be moved back and forth along the guide (6) by means of a drive (7), through which a cleaning fluid (14) can be sprayed onto the filter surface (1).According to the invention, it is proposed that the spray nozzle arrangement (8) comprises at least one carrier (9) movable back and forth along the guide (6) and at least one spray nozzle (10) mounted on the carrier (9), wherein the spray nozzle (10) is mounted on the carrier (9) such that it is movable about an axis (11). Furthermore, a method for cleaning such a device is proposed.