Compact Spray Pump Head Structure to Prevent Back Suction
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Solution Overview
Problem
Existing spray nozzles for mini aerosol dispensers face challenges such as cumbersome production and assembly processes, high production costs, poor spraying effects, and back suction issues.
Innovation Solution
A small spray pump head design featuring a head cap, inner plug, spring, and large ring with specific structural components and seals, allowing for streamlined assembly, improved sealing, and reduced back suction, utilizing a T-shaped inner plug and a spring mechanism for controlled liquid and air flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pump core extends a large ring of the valve stem for head cap combination, then the spray nozzle can function, but production and assembly become more cumbersome and costs increase
Solution Approach 1:
The pump head is divided into separate components: the large ring is separated from the valve stem extension, and the head cap combines with the large ring through a simplified structure. This segmentation allows each part to be manufactured independently and assembled more easily, reducing production complexity while maintaining spray functionality.
2Reliability
If the pump core extends a large ring of the valve stem for head cap combination, then the spray nozzle can function, but production costs increase
Solution Approach 1:
By separating the large ring from the valve stem extension and using a simplified head cap combination structure, the manufacturing process becomes less complex, reducing production costs while maintaining the necessary spray function.
3Ease of manufacture
If the conventional spray nozzle structure is used, then assembly is simpler, but spray effect is poor and back suction occurs
Solution Approach 1:
The inner plug is designed with different structural zones: an upper portion with a through-hole for liquid passage, a middle portion with a groove for spring placement, and a lower portion with sealing features. This localized structural differentiation optimizes each region for its specific function, improving spray effect and preventing back suction while maintaining assembly simplicity.
4Ease of manufacture
If the conventional spray nozzle structure is used, then assembly is simpler, but back suction occurs
Solution Approach 1:
The inner plug incorporates specific local features including a groove structure for spring placement and sealing surfaces that prevent back suction. These localized quality improvements address the harmful back suction effect while keeping the overall assembly process simple.
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 enhances production efficiency, reduces costs, and prevents back suction while ensuring effective spraying and atomization, making it suitable for daily-use cosmetics.
Implementation Method 1
the inner plug moves downward to cause deformation of the spring, cover piece, and the elastic sleeve of the inner plug
Implementation Method 2
the inner plug moves downward to cause deformation of the spring, cover piece, and the elastic sleeve of the inner plug, the thru-hole of the inner plug is sealed by the cover piece, allowing liquid to be sprayed through the spray hole of the head cap via the wall guide groove of the inner plug, and by means of atomization resulting from the deformation of cover piece and the elastic sleeve of the inner plug
Data Source
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AI summary
The present invention relates to a compact spray pump head that addresses the inconveniences and high production costs associated with existing similar products. Specifically, it tackles technical issues and design flaws such as poor spray effectiveness and the occurrence of back suction. The key feature of this pump head is the inclusion of a large circular plunger hole (401) at the liquid outlet, with the top of the plunger hole (401) and the bottom of the suction tube hole also forming part of the large ring (4). The outer diameter of the plunger hole within the large ring is sequentially provided with a bush groove (402) and a spring groove (403), where the spring (3) is placed in the spring groove (403) of the large ring. The lower bush (201) contains an inner plug (2) with a spring plug (202) at the top, and a central column is disposed in the lower bush of the inner plug. The inner wall of the inner sleeve features a wall guide groove, which communicates with the thru-hole (203) on the top of the inner plug; the central column of the inner plug is inserted into the plunger hole of the large ring, while the lower bush of the inner plug is inserted into the bush groove of the large ring. The outer diameter of the lower ring groove of the inner plug is an elastic sleeve, and the spring is enclosed within the spring cavity. A top cover groove is disposed on the top of the upper spring plug of the inner plug, the top cover groove of the inner plug is provided with an upwardly protruding cover groove, with the thru-hole of the inner plug located within the cover piece.