Cleaning Head With Smooth Shell For Bag Filter Maintenance
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Solution Overview
Problem
Existing cleaning devices for bag filters risk damaging the filter material due to contact between the cleaning head and the filter hose, and the use of a support basket to prevent this leads to significant static charging.
Innovation Solution
A cleaning device with a cleaning head featuring a fixed shell having a smooth outer surface and through holes distributed around the circumference, allowing the pressure jet to pass through, which maintains a distance from the nozzle and prevents static charging by reducing friction and eliminating negative pressure, enabling contact-free cleaning with a support basket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a support basket is inserted to prevent contact between the cleaning head and the filter hose, then the filter material is protected from damage, but significant static charging occurs
Solution Approach 1:
A smooth outer shell is introduced as an intermediary layer between the cleaning head and the support basket/filter hose. This shell allows the cleaning head to contact the smooth surface without generating significant static charge, while still preventing damage to the filter material. The smooth surface acts as a mediator that reduces friction and static electricity generation compared to direct contact with the support basket.
Solution Approach 2:
The surface properties of the cleaning head are changed by covering it with a smooth outer shell. This changes the friction characteristics and static charge generation parameters of the cleaning head surface, reducing the harmful static charging effect while maintaining the protective function.
2Productivity
If the cleaning head contacts the inner wall of the filter bag to generate negative pressure for cleaning, then cleaning effectiveness is improved, but the filter material is damaged
Solution Approach 1:
The smooth outer shell serves as an intermediary that allows the cleaning head to contact the filter hose or support basket without transferring damaging forces to the filter material. The shell absorbs and distributes the contact forces, preventing localized damage while maintaining the negative pressure generation needed for effective cleaning.
Solution Approach 2:
The smooth outer shell provides a cushioning layer before contact with the support basket or filter hose occurs. This pre-established protective layer prevents direct damaging contact while allowing the cleaning head to function effectively, cushioning against potential damage before it can occur to the filter material.
3Productivity
If the cleaning head is pulled against the inner wall by negative pressure, then cleaning coverage is improved, but spiral movement and uncontrolled motion occur
Solution Approach 1:
The smooth outer shell provides a cushioning effect that prevents the cleaning head from being violently pulled against the filter hose wall. This cushioning allows controlled contact and maintains the cleaning head's position along the longitudinal axis, preventing uncontrolled spiral movement while still enabling effective cleaning coverage.
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 allows for effective, contact-free cleaning along the longitudinal axis of the bag filter, reducing static charging and preventing damage, while also optimizing the cleaning process with reduced pressure medium usage and shorter cleaning times, thus lowering costs and minimizing environmental contamination.
Implementation Method 1
A pressure medium is supplied to the cleaning head via the hose element via a source of pressure medium, which pressure medium emerges from the nozzles and impinges on the inner wall of the filter hose. As a result, pressure waves are generated in the filter hose, which cause natural vibrations of the hose material, so that a filtrate sitting on the filter hose falls off.
Implementation Method 2
During operation, when the pressure medium emerges from the nozzles, a negative pressure is generated in their vicinity, so that the cleaning head does not remain in the center of the filter bag, but is pulled against the inner wall of the filter bag.
Implementation Method 3
due to the smooth outer surface of the protective casing, if there is any contact with an inserted support cage, the friction is reduced to such an extent that there is little or no static charging caused by friction.
Data Source
AI summary
The cleaning device (1) has a cleaning head (5) with at least one nozzle (11) rotating round a longitudinal axis (L). The cleaning head has a jacket (15) with a smooth external surface, in which a series of through holes (17) is formed, distributed round the circumference of the jacket and arranged relative to the nozzle so that a jet from the nozzle can pass through one of the holes, at least temporarily.