All-Plastic Pressing Pump Elastic Ring Structure for Low Friction
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Solution Overview
Problem
Existing all-plastic pressing pumps face issues with increased friction and reduced structural strength due to vertical openings in plastic annular pieces, affecting liquid discharge efficiency and service life.
Innovation Solution
The design incorporates an annular elastic piece with outward protrusions and inward recesses, bidirectional conical projections, and injection-molded components to enhance smooth operation and structural strength, using materials like PE and PP for efficient recycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If vertical openings are arranged on the plastic annular piece to reduce elastic coefficient, then the elastic coefficient is reduced, but the structural strength is reduced and friction increases
Solution Approach 1:
The annular elastic piece is segmented with multiple radial slots that divide the structure into multiple flexible segments. This segmentation allows the piece to deform and adapt to dimensional changes while maintaining overall structural integrity, resolving the contradiction between reducing elastic coefficient and maintaining strength.
Solution Approach 2:
Instead of using vertical openings that compromise strength, the invention uses radial slots that extend from the inner circumference toward the outer circumference. This dimensional change in the slot orientation allows elastic coefficient reduction through flexibility while the radial arrangement maintains structural strength by distributing stresses along the radial direction.
2Adaptability or versatility
If vertical openings are arranged on the plastic annular piece to reduce elastic coefficient, then the elastic coefficient is reduced, but friction between components increases
Solution Approach 1:
The radial slots segment the annular elastic piece into flexible sections that can independently deform. This segmentation reduces friction by allowing each segment to move and adapt separately, minimizing contact resistance and lateral thrust generation during operation.
Solution Approach 2:
The annular elastic piece is designed as a dynamic component with radial slots that allow it to flex and adapt during operation. This dynamic flexibility reduces friction by enabling smooth deformation and movement, preventing the increased friction that occurs with rigid structures having vertical openings.
3Adaptability or versatility
If vertical openings are arranged on the plastic annular piece, then the elastic coefficient is reduced, but the service life is reduced due to decreased structural strength
Solution Approach 1:
The radial slots create a segmented structure that maintains structural strength while reducing elastic coefficient. This segmentation allows the annular elastic piece to flex and adapt during operation without compromising overall integrity, thereby extending service life compared to structures with vertical openings that create weak points.
Solution Approach 2:
By changing the orientation of the openings from vertical to radial, the invention maintains structural strength while achieving the desired elastic coefficient reduction. The radial arrangement distributes mechanical stresses more effectively, preventing premature failure and extending the service life of the component.
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 reduces friction, improves structural strength, and ensures stable, uniform liquid discharge while meeting recycling standards, with enhanced durability and reduced stress concentrations.
Implementation Method 1
the pump rod between the locking cap and the bent nozzle is provided with an annular elastic piece capable of resetting the liquid extraction assembly after the liquid extraction assembly is pressed down
Implementation Method 2
a one-way valve capable of allowing the liquid in the bottle body to pass through and enter the pump chamber when the liquid extraction assembly moves
Implementation Method 3
The spring is compressed, the outlet channel is opened, and at the same time, the air in the pump chamber is discharged through the outlet channel
Data Source
AI summary
Disclosed is an all-plastic recyclable pressing pump, including a pump body, where the pump body is provided with a pump chamber, and a bottle locking cap is connected to the pump body; a liquid extraction assembly is provided in the pump chamber; the liquid extraction assembly includes a pump rod, and a bent nozzle is connected to an upper end of the pump rod; a liquid outlet channel is arranged in the bent nozzle, and a locking cap capable of limiting the liquid extraction assembly from disengaging from the pump chamber is provided in the pump chamber; a latching mechanism capable of limiting a downward movement of the bent nozzle when the bent nozzle stays in a latching position is provided between the pump rod and the locking cap; a scavenge port is arranged on a wall of the pump chamber; a lower end of the pump chamber is provided with a one-way valve capable of allowing the liquid in the bottle body to pass through and enter the pump chamber when the liquid extraction assembly moves; a lower part of the liquid extraction assembly is provided with a control valve capable of controlling the liquid in the pump chamber to be ejected from the liquid outlet channel; the locking cap is provided with a lower conical projection with a small upper part and a large lower part; the bent nozzle is provided with an upper conical projection with a large upper part and a small lower part; the pump rod between the locking cap and the bent nozzle is provided with an annular elastic piece capable of resetting the liquid extraction assembly after the liquid extraction assembly is pressed down; the annular elastic piece is provided with at least two outwardly protruding protrusions, and an inwardly recessed recess is arranged between two adjacent protrusions. The recesses replace openings to reduce an elastic coefficient of the annular elastic piece so that the annular elastic piece is more easily deformed and has a better rebound effect. There is no need to cut out openings to damage the structural strength of the annular elastic piece, which improves its service life and reduces the generation of transverse stresses, resulting in smoother movement.