Pneumatic Conveyor Shutoff Fitting for Dust Containment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pneumatic conveyors for transporting bulk materials, such as tablets, often contaminate the environment due to dust leakage, especially when conveying hazardous materials, as existing systems fail to prevent material dispersion during operation and require frequent cleaning and maintenance.
Innovation Solution
A pneumatic conveyor system with a hermetically sealed collection volume, a cyclone-shaped bulk material discharge unit, and a flushing fluid line to separate and clean the conveyor gas stream, reducing contamination risks and facilitating maintenance by using a shutoff fitting, tangential entry and exit, and a sieve or filter to retain material, along with a module configuration for easy line connection and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the pneumatic conveyor operates continuously with a connected collection volume, then productivity is improved, but environmental contamination increases due to dust leakage and material dispersion
Solution Approach 1:
The system divides the collection volume from the conveying line using a shutoff fitting, creating separable segments. This allows the conveying line to be hermetically sealed for continuous operation while the collection volume can be isolated for cleaning or maintenance without stopping the conveyor, thus maintaining productivity while preventing dust leakage to the environment.
Solution Approach 2:
The shutoff fitting acts as an intermediary component between the collection volume and the conveying line. It enables hermetic sealing during operation to prevent material dispersion, while allowing complete separation when needed for cleaning, thus resolving the contradiction between continuous operation and environmental protection.
2Object-generated harmful factors
If the collection volume is hermetically sealed and separated from the conveying line, then environmental contamination is reduced, but device complexity increases due to additional shutoff fittings and sealing mechanisms
Solution Approach 1:
The shutoff fitting extracts the separation function from the overall system design, providing a simple yet effective means to isolate the collection volume from the conveying line. This minimal addition achieves hermetic sealing without requiring complex mechanisms, thus reducing dust leakage while minimizing the increase in device complexity.
3Ease of repair
If the entire pneumatic conveyor system is designed for complete cleaning access, then ease of maintenance is improved, but device complexity and space requirements increase
Solution Approach 1:
By segmenting the system into separable components (collection volume and conveying line) via the shutoff fitting, the design enables targeted cleaning of the conveying line without requiring access to the entire system. This reduces the complexity needed for complete cleaning access while maintaining ease of maintenance for the conveying portion.
Solution Approach 2:
The separable design extracts the conveying line as an independently cleanable component. This allows the conveying line to be removed or accessed for cleaning without disassembling the entire system, improving ease of maintenance while avoiding the complexity and space requirements of a completely disassemblable system.
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 system effectively prevents environmental contamination by separating the conveyor gas circuit from the collection volume, reducing dust leakage, and allowing for efficient cleaning and maintenance, ensuring safe operation and reduced space requirements, particularly suitable for tablet production chains.
Implementation Method 1
the bulk material discharge unit has a container that is preferably configured as a cyclone, having an inflow into which the conveying line enters, preferably tangentially
Implementation Method 2
In this container, the forces that act aerodynamically on the transported material are reduced. This is because the container has a greater cross-section than the conveying line and return line connected with it, so that the flow velocity in the container is reduced.
Implementation Method 3
the shutoff fitting hermetically seals the conveying line from the upstream collection volume
Implementation Method 4
having a compressor for conveyor gas
Implementation Method 5
a sieve or filter to retain material
Data Source
AI summary
A pneumatic conveyor for transporting bulk materials, in particular tablets, has a compressor for conveyor gas and has a bulk material feed and a conveyor line, in particular hose, arranged therebetween, and a bulk material discharge. To prevent contamination of the environment during operation, a shut-off device is provided between a collection volume and the conveyor line. A method for operating a pneumatic conveyor conveys sample volumes intermittently.