Jet Device Needle With Ribs For Radial Stability
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Solution Overview
Problem
Conventional jet device needles tend to wobble or deviate under varying fluid pressures, affecting the jetting effect due to uneven radial pressure distribution, and increasing the needle's diameter to address this issue leads to increased weight and production costs.
Innovation Solution
A needle for a jet device with a conical portion and circumferentially arranged ribs that form fluid passages, allowing the needle to maintain position within the nozzle and facilitate stable operation under different pressure conditions, preventing radial wobbling and enhancing the jetting effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the needle diameter is increased to prevent wobbling under high fluid pressure, then the stability of the needle is improved, but the weight of the device and production costs increase
Solution Approach 1:
The needle structure is segmented into a needle body and a separate supporting member with ribs. The supporting member is circumferentially provided on the needle body and extends into the nozzle's inner cavity, dividing the support function into distinct structural elements. This segmentation allows the needle to maintain stability through the distributed rib structure rather than increasing overall diameter, thus preventing wobbling without adding excessive weight.
Solution Approach 2:
The supporting member features ribs with different radial dimensions - a first rib part with smaller radial dimension and a second rib part with larger radial dimension. This local quality variation allows the needle to have enhanced stability at critical locations (where ribs coordinate with the nozzle inner cavity) while maintaining a smaller overall diameter, thereby achieving stability without proportionally increasing weight throughout the entire needle structure.
2Stability of the object's composition
If the needle diameter is increased to prevent wobbling under high fluid pressure, then the stability of the needle is improved, but the production costs increase
Solution Approach 1:
By segmenting the needle into a needle body and a supporting member with ribs, the design allows for specialized manufacturing of each component. The supporting member can be manufactured with specific rib configurations that coordinate with the nozzle inner cavity, enabling stable operation without requiring an oversized needle. This segmented approach optimizes material usage and reduces production costs compared to manufacturing a uniformly larger diameter needle.
Solution Approach 2:
The varying radial dimensions of the rib parts allow for optimized material distribution - more material where support is needed (second rib part with larger radial dimension coordinating with nozzle cavity) and less material where it is not required (first rib part with smaller radial dimension). This local quality optimization reduces overall material consumption and production costs while maintaining the stability needed for high fluid pressure applications.
Data Source
AI summary
A needle for a jet device includes a needle body and a tapered part arranged at the end of the needle body, in which the needle body is circumferentially provided with supporting bodies, so that when the needle is assembled in a nozzle of the jet device, the outer surfaces of the supporting bodies are coordinated with an inner chamber of the nozzle to limit the position of the needle body and form fluid channels among the supporting bodies, thereby to effectively prevent the needle from deviating from the spout of the nozzle or from radially swinging.