Trigger Sprayer Inclined Valve Air Venting Mechanism
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Solution Overview
Problem
Conventional trigger type sprayers face issues with liquid leakage due to air relief grooves and axial movement of valve bodies, which complicates air venting and affects smooth spraying operations.
Innovation Solution
Inclining the valve body of the first valve to open it, allowing air to escape while keeping the second valve closed, thereby preventing liquid leakage during air venting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an air relief groove is provided in the delivery valve seat or delivery valve body to enable air venting, then air venting is improved, but liquid leakage occurs during use
Solution Approach 1:
The invention extracts the air venting function from the delivery valve seat/body by providing a separate air relief groove in the cylinder chamber wall. This separates the air venting pathway from the liquid flow pathway, allowing air to be vented through the groove while liquid is prevented from leaking through the delivery valve mechanism.
Solution Approach 2:
The invention introduces an intermediary structure - the air relief groove positioned in the cylinder chamber wall - that mediates between the need for air venting and the requirement to prevent liquid leakage. The groove provides a dedicated air escape route that does not compromise the liquid-tight sealing of the delivery valve.
2Ease of operation
If the valve body is moved axially to open and close the valve, then valve operation is simplified, but air venting between valves becomes difficult
Solution Approach 1:
The invention segments the valve system into multiple independent valves (first valve in the cylinder chamber and second valve at the delivery valve) with separate control mechanisms. This segmentation allows each valve to perform its specific function - the first valve controls air venting through its inclined opening mechanism, while the second valve controls liquid delivery through axial movement.
Solution Approach 2:
The invention changes the opening mechanism of the first valve from axial movement to rotational/inclined movement. The valve body of the first valve is configured to rotate or incline relative to its seat, providing a different dimensional approach to valve operation that effectively enables air venting without compromising the axial operation of the second valve.
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
Efficient air venting between the second and first valves is achieved without liquid leakage, ensuring smooth operation and effective spraying by utilizing the inclined valve body mechanism.
Implementation Method 1
the valve body of the first valve is pressed to be inclined by a bottom portion of the bottomed cylindrical case so that the first valve is opened
Implementation Method 2
a hollow piston slidably incorporated into the cylinder chamber, having a valve seat and a hollow portion of a second valve, and sliding back and forth according to operation of a trigger
Implementation Method 3
since the second valve is closed during discharge of air in a space between the second valve and the first valve, namely, during air vent, liquid never leaks from the nozzle
Data Source
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AI summary
A trigger type sprayer capable of easily performing air vent in a space between a second valve and a first valve, and preventing leakage of liquid in use is provided. The present invention includes a body 11 having a first flow channel 11a through which liquid can flow, a second flow channel 11d communicating with the first flow channel 11a, and a cylindrical cylinder chamber 11b communicating with the second flow channel 11d; a hollow piston 13 slidably incorporated into the cylinder chamber 11b, having a valve seat 13b and a hollow portion 13d of a second valve 14, and sliding back and forth according to operation of a trigger 12; the second valve 14 incorporated into the hollow portion 13d of the hollow piston 13 and positioned at a downstream side; and a first valve 15 incorporated into the cylinder chamber 11b and positioned at an upstream side, wherein the first valve 15 is pressed by the second valve 14 so that the first valve 15 is opened.