Nozzle Cap Segmentation for Chemical Solution Clogging
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Solution Overview
Problem
Nozzle holes in existing nozzle devices often clog when used for extended periods due to stagnation of chemical solutions, despite designs that allow air and chemical solution flow.
Innovation Solution
A nozzle cap design featuring an air cap part with a cylinder-shaped base and a liquid cap part with a protruding disc-shaped base, where air collides with the lower surface of the lid part, preventing stagnation by diffusing air and ensuring uniform chemical solution spraying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the nozzle cap has a hollow dome shape allowing air and chemical solution to flow through, then the chemical solution can be sprayed effectively, but the chemical solution stagnates and condenses causing clogging in the nozzle hole over time
Solution Approach 1:
The nozzle cap is divided into two separate parts: an air cap part with a hollow dome shape for air flow, and a liquid cap part with a flat bottom for chemical solution collection. This segmentation allows air and chemical solution to flow through the nozzle cap effectively while preventing stagnation and clogging in the nozzle hole.
Solution Approach 2:
The liquid cap part is extracted as a separate component with a flat bottom, removing the problematic hollow dome structure that caused chemical solution stagnation. This extraction eliminates the condensation and clogging issue while maintaining effective spraying functionality.
2Power
If the nozzle cap structure allows air flow through the hollow dome, then air can assist chemical solution discharge, but chemical solution stagnation occurs leading to clogging
Solution Approach 1:
The nozzle cap is segmented into an air cap part with hollow dome structure for air flow assistance and a liquid cap part with flat bottom for chemical solution collection. This segmentation allows air to flow through the hollow dome to assist chemical solution discharge while preventing chemical solution stagnation in the nozzle hole.
Solution Approach 2:
The flat bottom liquid cap part acts as an intermediary between the air cap part and the nozzle hole. It collects chemical solution from the air cap part and delivers it to the nozzle hole, preventing direct contact between stagnant chemical solution and the hollow dome structure, thereby eliminating condensation and clogging.
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 design effectively prevents clogging in nozzle holes, allows for easy attachment and detachment of components, and ensures uniform chemical solution application, even over long usage periods.
Implementation Method 1
air is flowed in through the chemical solution spraying air hole so that the chemical solution is sprayed by air from the nozzle hole, and the lower surface of the lid part has a plane shape and the air flowed in from the chemical solution spraying air hole is made to collide with the lower surface of the lid part through the space part
Implementation Method 2
a protruding part which is formed substantially in the center of the second base part so as to protrude toward the first base part side and in which a flow passage for circulating a chemical solution therethrough is formed
Implementation Method 3
a nozzle hole that penetrates the first base part being formed substantially in the center of the first base part... air is flowed in through the chemical solution spraying air hole so that the chemical solution is sprayed by air from the nozzle hole
Data Source
AI summary
[Problem] To provide a nozzle cap that hardly causes clogging in the nozzle hole even when used for a long time, a nozzle device having such a nozzle cap and a spraying method of a chemical solution.[Solution] The present invention relates to a nozzle cap 100 to be used for a nozzle device for spraying a chemical solution to wet paper, wire, felt, press rollers, dryer rollers, canvas or guide rollers in a paper machine, which is provided with: an air cap part 10 that is provided with a first base part 11 having a cylinder shape with a lid, with a nozzle hole 13 formed on the first base part 11; and a liquid cap part 20 that is provided with a second base part 21 having a disc-shape and a protruding part 22 that is formed on the second base part 21, and in this structure, a plurality of chemical solution spraying air holes 22b are formed on the second base part 21, and into a space part S formed between the first base part 11 and the second base part 21, with the first base part 11 and the second base part 21 being fitted to each other, a chemical solution is flowed from the protruding part 22, and air is also flowed in from the chemical solution spraying air holes 22b so that the chemical solution from the nozzle holes 13 is sprayed by the air, and the lid part 11a has a lower surface having a plane shape so that the air flowed in from the chemical solution spraying air holes 22b are made to collide with the lower surface of the lid part 11a through the space part S.