Hose Filter Cleaning Head Jacket for Contact-Free Jet Cleaning
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Solution Overview
Problem
Existing cleaning devices for hose filters often cause damage to the filter material due to contact during cleaning and result in significant static charging when a support cage is used to prevent damage.
Innovation Solution
A cleaning device with a fixed jacket having a smooth outer surface and through holes distributed around the rotating nozzles, allowing the cleaning head to move along the hose filter's longitudinal axis without being drawn to the inner surface or support cage, reducing static charging and preventing uncontrolled spiral movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cleaning head is moved to and fro in the filter hose during cleaning, then cleaning effectiveness is improved, but the cleaning head contacts the filter hose material causing damage
Solution Approach 1:
A support cage is introduced as an intermediary component between the cleaning head and the filter hose. The support cage protects the filter material from direct contact with the cleaning head while allowing the cleaning process to proceed effectively. The cage acts as a mediator that prevents harmful contact without interfering with the cleaning function.
2Object-affected harmful factors
If a support cage is inserted in the filter hose during cleaning to protect the filter material, then damage to filter material is prevented, but the cleaning head becomes statically charged to voltages of up to 2000 V to 3000 V
Solution Approach 1:
The support cage is removed from the filter hose before the cleaning process begins. Instead of using a support cage during cleaning, the filter hose is cleaned in its collapsed state without any internal support structure. This eliminates the source of static charging while still allowing effective cleaning through the compression wave mechanism.
3Productivity
If the cleaning head rotates about its longitudinal axis during cleaning, then cleaning coverage is improved, but negative pressure causes the cleaning head to be drawn to the inner wall creating spiral movement
Solution Approach 1:
The cleaning head executes periodic to-and-fro movements along the longitudinal axis of the filter hose in addition to rotation. This periodic linear motion, combined with rotation, ensures that the cleaning head systematically covers the entire inner surface of the filter hose while maintaining controlled movement patterns that prevent uncontrolled spiral motion.
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
Enables contact-free cleaning with a support cage, reducing static charging, maintaining the cleaning head's central movement, improving cleaning efficiency with reduced pressure medium usage, and minimizing dust and cleaning time, thus lowering costs and subsequent cleaning needs.
Implementation Method 1
A pressure medium is fed to the cleaning head via the hose element by means of a pressure medium source, which pressure medium emerges from the nozzles and impinges upon the inner wall of the filter hose. As a result, compression waves are generated in the filter hose, which bring about self-oscillations of the hose material so that a filtrate located on the filter hose drops down.
Implementation Method 2
During operation, as the pressure medium emerges from the nozzles, a negative pressure is produced in the vicinity thereof so that the cleaning head does not remain in the centre of the filter hose but is drawn to the inner wall of the filter hose.
Implementation Method 3
In addition, due to the smooth outer surface of the protective jacket, in the event of any contact with an inserted support cage, the friction is reduced in such a manner that hardly any or no friction-induced static charging occurs.
Data Source
AI summary
A cleaning device (1) for hose filters comprising a cleaning head (5) having at least one nozzle (11) rotating about a longitudinal axis (L), is characterized in that the cleaning head (5) comprises a fixed jacket (15) having a smooth outer surface which surrounds the at least one rotating nozzle (11) at a distance and in which a series of through holes (17) are formed, said holes being distributed over the circumference of the jacket (15) and being arranged with respect to each nozzle (11) such that a jet emerging from each nozzle (11) during operation can pass through a through hole (17) at least intermittently.