Wetting device for flat mops
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Solution Overview
Problem
Existing wetting devices for flat mops in clean rooms face issues with particle emission and lack of precise liquid control, as well as difficulty in decontamination.
Innovation Solution
A wetting device with a mechanical elevator, plastic slide bars, and a contact structure that lifts a transfer plate away from the lower end, using plastic slide bars made from materials like polyacetals or elastomers to minimize particle emission and facilitate precise liquid transfer, along with a removable fluid displacer for improved decontamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional wetting devices are used in clean rooms, then liquid transfer function is achieved, but particle emission occurs
Solution Approach 1:
The patent changes the material parameter of the slide bars from metal to plastic (specifically polyacetals, polyethersulfones, polysulfones, polyether ketones, polyketones, polybutylene terephthalate or polytetrafluoroethylene). This material substitution reduces particle emission while maintaining the mechanical function of the elevator mechanism, directly resolving the contradiction between achieving liquid transfer and minimizing particle contamination in clean room environments.
Solution Approach 2:
The plastic slide bars are designed as replaceable components that can be easily removed and replaced. When particles contaminate the slide bars during use, they can be discarded and replaced with new ones, ensuring continuous clean room operation without complex cleaning or decontamination procedures. This disposable approach resolves the contradiction by maintaining reliability through easy replacement rather than complex cleaning systems.
2Measurement precision
If traditional wetting devices are used, then liquid transfer is achieved, but precise liquid control is lacking
Solution Approach 1:
The elevator mechanism is designed to automatically lift the transfer plate to a predetermined position using the plastic slide bars as guides. The mechanical design inherently controls the liquid transfer amount through the fixed geometry of the slide bars and transfer plate positioning, eliminating the need for complex electronic controls or sensors. This self-regulating mechanical system achieves precise liquid control without adding device complexity.
3Ease of operation
If traditional wetting devices are used, then wetting function is achieved, but decontamination difficulty increases
Solution Approach 1:
The elevator mechanism is segmented into removable components, particularly the plastic slide bars which can be easily detached from the mechanical structure. This segmentation allows the slide bars to be removed and replaced without disassembling the entire device, enabling quick decontamination or replacement when contamination occurs. The modular design resolves the contradiction by simplifying decontamination procedures while maintaining the necessary mechanical complexity for precise liquid transfer.
Solution Approach 2:
The plastic slide bars are designed as replaceable components that can be easily removed and replaced. When particles contaminate the slide bars during use, they can be discarded and replaced with new ones, ensuring continuous clean room operation without complex cleaning or decontamination procedures. This disposable approach resolves the contradiction by maintaining reliability through easy replacement rather than complex cleaning systems.
Data Source
AI summary
A wetting device for flat mops includes a mechanical elevator that contains a contact structure, brackets, and plastic slide bars. The brackets lift the transfer plate away from the lower end of the wetting device if the contact structure is pressed towards the lower end. Each bracket is connected to at least one plastic side bar. The plastic slide bars move apart from each other when the transfer plate lifts away from the lower end. The transfer plate lies upon the plastic slide bars during movement of the plastic slide bars apart from each other. Each plastic slide bar has a length that is at least five times larger than its maximum width and is detachable from its corresponding bracket. The contact structure is a flat metal framework of connected struts. Also disclosed is a cleaning trolley with the wetting device.