Sprayer Spray Head Locking and Sealing Mechanism
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Solution Overview
Problem
Existing spray guns for fluid delivery systems lack a secure and efficient mechanism for attaching and detaching the spray head, which can lead to fluid leakage and operational inefficiencies during maintenance or when switching between configurations.
Innovation Solution
A sprayer design featuring a main body with a handle and trigger, a removably couplable spray head with a locking mechanism, airflow control, and a sealing mechanism for the needle valve, including a packing material and retainer, to ensure secure attachment and prevent fluid leakage during decoupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the spray head is made removably couplable to the main body for easy maintenance and configuration changes, then ease of operation is improved, but reliability deteriorates due to potential fluid leakage at the connection interface
Solution Approach 1:
The sealing mechanism is pre-configured with a seal that automatically engages with the connection interface when the spray head is attached to the main body. This preliminary preparation of the sealing arrangement ensures that fluid leakage is prevented from the moment of connection, resolving the contradiction between easy removability and reliable fluid containment.
2Reliability
If a locking mechanism is added to secure the spray head to the main body, then reliability is improved by preventing accidental detachment, but device complexity increases
Solution Approach 1:
The locking mechanism is designed to automatically engage and lock the spray head to the main body through a self-actuating feature, such as a spring-loaded pin or cam mechanism that locks upon insertion. This self-service approach provides secure attachment without requiring additional manual operations or complex control systems, thus improving reliability while minimizing added complexity.
3Ease of operation
If the connection component is designed for tool-free attachment, then ease of operation is improved, but manufacturing precision requirements worsen to ensure proper alignment and sealing
Solution Approach 1:
The connection component incorporates an asymmetric design with a keyed interface or non-circular cross-section that provides inherent alignment guidance during attachment. This asymmetric feature ensures that the spray head can only be attached in the correct orientation, automatically achieving proper alignment and seal engagement without requiring high manufacturing precision or special tools, thus resolving the contradiction between ease of operation and manufacturing precision requirements.
Data Source
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AI summary
The present disclosure generally relates to a sprayer (102) for a fluid delivery system (100). In one example, a sprayer (102) for a fluid delivery system (100) is provided. The sprayer (102) includes a main body (302) having a handle (211) and a trigger (110; 210). The sprayer (102) also includes a spray head (303) having a fluid input for receiving fluid material and a fluid output (212) for spraying the fluid material. The spray head (303) is removably couplable to the main body (302) by rotating the spray head (303) with respect to the main body (302) to engage a connection component (307) of the spray head (303) to a corresponding connection component (312) of the main body (302). The sprayer (102) also includes a spray head locking mechanism (322) on the main body (302) that extends to engage a portion of the spray head (303).