Three-Stage Variable Color Paste Pump Precision Control
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Solution Overview
Problem
Existing toning equipment faces challenges in precision control of color paste ejection, particularly for small amounts, due to large ejection deviations when switching from high to low volume, leading to inefficiencies and increased costs with complex, space-intensive dual-pump systems.
Innovation Solution
A three-stage variable color paste pump with a differential pump and control valve system that adjusts communication structures to accurately eject small, medium, and large amounts of color paste using a single pump, ensuring precision and reducing space and cost requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a single pump with large ejection capacity is used, then large amount of color paste can be ejected, but ejection precision deteriorates when ejecting small amounts
Solution Approach 1:
The pump chamber is divided into a first pump chamber and a second pump chamber with different ejection capacities. The control valve directs color paste through different pathways: for small amounts, it uses the second pump chamber with higher precision; for large amounts, it uses the first pump chamber with greater capacity. This segmentation allows the system to optimize between capacity and precision based on demand.
Solution Approach 2:
The control valve dynamically switches between different pump chambers and pathways based on the required ejection amount. The system transitions from a static single-pump design to a dynamic multi-mode design where the active pumping pathway changes according to operational requirements, optimizing performance for each scenario.
2Manufacturing precision
If two color mixers (one large pump, one small pump) are provided, then ejection precision for both small and large amounts is improved, but device complexity increases
Solution Approach 1:
Instead of providing two independent color mixer systems, the invention merges their functions into a single pump system with multiple pump chambers. The control valve integrates the switching logic, combining what would require separate mixers into one unified device, reducing overall system complexity while maintaining precision for both small and large ejection amounts.
Solution Approach 2:
The single pump system is designed to perform multiple functions: the first pump chamber handles large amount ejections while the second pump chamber handles small amount ejections with higher precision. The control valve provides universal control over both pathways, making the single system as versatile as two separate systems but with reduced complexity.
3Manufacturing precision
If two pumping systems are arranged in parallel, then ejection precision for varying amounts is improved, but occupied space increases
Solution Approach 1:
The second pump chamber is positioned within or adjacent to the first pump chamber in a nested or integrated arrangement. The control valve and associated components are shared between both chambers. This nesting approach allows two pumping systems to coexist in a compact footprint, significantly reducing the occupied space compared to parallel arrangement while maintaining the ability to switch between precision and capacity modes.
Data Source
Figure 1~1c
Figure 1d~2a
Figure 2b~3
AI summary
A three-stage variable color paste pump, comprising: a differential pump, which includes: a rodless cavity, a rod containing cavity, and a piston rod; configuring a control valve, which comprises a valve body and a valve core, wherein the valve body is provided with a rod containing cavity opening which is in communication with the rod containing cavity; configuring a rodless cavity opening as in communication with the rodless cavity, configuring a color paste bucket opening as in communication with a color paste bucket, and configuring an ejection outlet; configuring a channel on the valve core, moving the valve core to different positions may form three communication structures. The pump uses one differential pump to achieve three-stage injection output, thus ensuring the accuracy of the injection output of the color paste pump. The pump has a simple structure, takes up a small surface area, and is easy to use.