Dense-Phase Powder Pump Plug-In Valve Housing for Easy Maintenance
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Solution Overview
Problem
Existing dense phase powder pumps face challenges in maintenance, particularly in replacing clogged filter elements and defective pinch valves without disrupting functionality and risking leaks, and require complex processes for maintenance.
Innovation Solution
The design incorporates a pinch valve housing that forms a plug connection with the powder conveying chamber, allowing easy detachment and replacement of the pinch valve and filter element, with features like O-rings for sealing and a support structure for the pinch valve, enabling simple maintenance without compromising functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the filter element and pinch valve are integrated into a single assembly in the powder conveying chamber, then the structural integrity is improved, but the ease of repair deteriorates
Solution Approach 1:
The patent divides the powder conveying chamber into separable modules: the chamber body, the filter element, and the pinch valve assembly. Each component can be independently removed and replaced without affecting the others, resolving the contradiction between structural integrity and ease of repair.
Solution Approach 2:
The filter element and pinch valve are extracted as separate replaceable components from the powder conveying chamber. This allows maintenance personnel to remove and replace only the defective component (filter or valve) without disrupting the entire chamber assembly, improving repairability while maintaining structural integrity through standardized connection interfaces.
2Manufacturing precision
If the filter element is replaced without disrupting the pinch valve assembly, then the manufacturing precision is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The design segments the filter element and pinch valve into separate components with standardized interfaces. This allows the filter to be replaced independently while maintaining precise sealing through dedicated sealing surfaces and O-ring connections, resolving the contradiction between sealing precision and assembly ease.
Solution Approach 2:
The patent introduces intermediary sealing elements (O-rings, sealing lips) at the interfaces between components. These intermediaries ensure precise sealing connections while allowing for easy assembly and disassembly, resolving the contradiction between manufacturing precision and ease of manufacture.
3Reliability
If a mechanical pinch valve arrangement is used to deform powder hoses, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical pinch valve arrangements with a simpler membrane-based valve system. The membrane valve element responds to pressure differential between the first and second cavities, eliminating the need for complex mechanical deformation mechanisms while maintaining reliable powder flow control.
Solution Approach 2:
The valve operation is controlled through pneumatic pressure differentials between cavities rather than mechanical force application. This substitutes pneumatic control for mechanical deformation, reducing device complexity while maintaining functional reliability through pressure-driven membrane actuation.
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
Facilitates easy and efficient replacement of pinch valves and filter elements, reducing maintenance complexity and minimizing the risk of leaks, ensuring reliable operation of the powder pump.
Implementation Method 1
The dense phase powder pump has a powder conveying chamber with a preferably cylindrical and in particular circular cylindrical casing tube or casing body and a gas-permeable filter element arranged inside said casing tube or casing body
Implementation Method 2
The first region of the pinch valve housing and the end region of the casing body of the powder conveying chamber are designed to form a leakage-free plug connection between the pinch valve housing and the powder conveying chamber
Data Source
AI summary
A dense-phase powder pump for conveying powder has at least one powder conveying chamber with a gas-permeable filter element that has at least regions thereof accommodated in a casing body and at least one pinch valve that is or can be connected to an end region of the powder conveying chamber. In particular, the dense-phase powder pump has a pinch valve housing formed as the end piece of the powder conveying chamber, which pinch valve housing has a first region facing the powder conveying chamber and an opposing second region, wherein the first region of the pinch valve housing is designed to be connectable to the end region of the powder conveying chamber by means of a plug connection, in particular a sole plug connection, and wherein the second region of the pinch valve housing is designed to exchangeably accommodate the pinch valve.