Thread Dosing Feeder for Creams with Rotary Gate Metering
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Solution Overview
Problem
Existing thread dosing systems for creams and gelatinous products are inaccurate due to reliance on manual estimation, leading to over- or underdosing, as they do not effectively integrate tube output handling into the metering process.
Innovation Solution
A metering dispenser system comprising a two-part assembly with a metering and sealing body and a tube, connected via a spring lock or screw plug, featuring a rotary gate feeder with adjustable dosing chambers and integrated valves for precise dosing, allowing for user-friendly operation by squeezing the tube wall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual estimation is used to control tube outlet length, then the device complexity is reduced, but the dosing precision deteriorates
Solution Approach 1:
The system performs self-measurement of the extracted product volume through the plunger displacement in the metering chamber, automatically determining the dosing quantity without requiring external measurement tools or complex control systems
Solution Approach 2:
The dosing precision is improved by changing the physical parameter of plunger displacement volume, where the volume of cream extracted corresponds directly to the plunger movement distance in the metering chamber, enabling precise dosing through simple geometric relationships
2Measurement precision
If a plunger-based metering pump is used, then the dosing precision is improved, but the ease of operation deteriorates due to complex valve and spring mechanisms
Solution Approach 1:
The complex intake and discharge valve mechanisms along with activating and retracting springs are completely removed from the system. Instead, the tube wall squeezing action directly drives the plunger forward, eliminating the need for mechanical valves and spring-based actuation mechanisms
Solution Approach 2:
The tube wall squeezing action directly drives the plunger without requiring external actuation mechanisms. The user's manual squeezing of the tube automatically performs both the product extraction and plunger actuation functions in one simple operation
3Ease of operation
If the tube outlet is varied to achieve thread dosing, then the ease of operation is improved, but the dosing precision deteriorates due to inconsistent line lengths
Solution Approach 1:
The manual estimation and visual judgment of line length are replaced with a mechanical measurement system. The plunger displacement volume mechanically records the exact volume of cream extracted, replacing subjective visual assessment with objective mechanical measurement
Solution Approach 2:
The system automatically measures and records the dosing quantity through plunger displacement, eliminating the need for user judgment or estimation. The measurement function is self-performed by the metering chamber mechanism itself
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
Ensures precise dosing of creams and gelatinous products by integrating tube output handling, reducing over- or underdosing and providing additional product protection through sealing and re-circulation functions, enhancing user experience and product protection.
Implementation Method 1
The subassemblies are separably connected with each other via a spring lock or a screw plug
Implementation Method 2
the rotary gate feeder is manually turned 180° so that the product can be pressed out of the tube with the next usage
Implementation Method 3
the product in the metering chamber that is squeezed out of the tube moves the plunger in the direction of its outlet
Implementation Method 4
Discharge and intake valves are fixed and snapped into place at each end of the metering chamber in order to restrict the plunger stroke and to additionally safeguard the product from the atmosphere with the closed geometry
Implementation Method 5
In the open valve variant without closed inlet and outlet openings, the plunger seals the metering chamber by means of the seal seat in the intake and discharge valves
Implementation Method 6
an additional part with a circumferential sealing and shearing edge can be inserted into the re-circulation valve, or check valve, for the purpose of shearing off the extracted product thread upon turning the rotary gate feeder
Data Source
AI summary
A thread dosing feeder for extracting creams or gelatinous products contained within a tube from the tube whereby the dosing feeder tube can be applied to the tube, the thread dosing feeder comprises a rotary gate feeder (1), the rotary gate feeder (1) has a metering chamber, the metering chamber operates in conjunction with a plunger (3), the rotary gate feeder (1) is pivot-mounted on the thread dosing feeder and the thread dosing feeder has an outlet, and the thread dosing feeder has a re-circulation valve (11, 14, 20), the rotary gate feeder (1) has a concave finger receptor and is formed in one piece, whereby the metering chamber is locked and has an intake and discharge valve (6).