Two-Stage Pneumatic Conveying via Intermediate Container
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Solution Overview
Problem
Pneumatic material conveying systems, particularly partial-vacuum transport systems, face issues such as high energy consumption, high air flow rates, noise, dust, and significant space requirements due to large pipe sizes and equipment needed for long-distance waste conveying, leading to increased costs and inefficiencies.
Innovation Solution
Implementing a two-stage material conveying method where the material is first conveyed into an intermediate container using a larger pipe size and then transferred to a separator container through a smaller pipe size, optimizing energy use and reducing pipe diameter and air flow requirements, allowing for compact system design and reduced space needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If large pipe diameters are used for long-distance conveying, then pressure loss is reduced and conveying operation is maintained, but space requirements and system costs increase significantly
Solution Approach 1:
The conveying system is divided into two distinct stages with different pipe size requirements. The first stage uses larger pipes for high-speed material transfer from input points to intermediate containers, while the second stage uses smaller pipes for conveying material from intermediate containers to the separator. This segmentation allows each stage to be optimized independently, reducing overall space requirements while maintaining conveying reliability.
Solution Approach 2:
The system dynamically adjusts pipe diameter based on the specific requirements of each conveying stage. The pipe diameter is not uniform throughout the system but varies to match the material flow characteristics and distance requirements of each segment, thereby optimizing space utilization without compromising conveying performance.
2Reliability
If large pipe diameters are used for long-distance conveying, then pressure loss is reduced, but energy consumption increases due to higher air flow requirements
Solution Approach 1:
The conveying system is divided into two distinct stages with different pipe size requirements. The first stage uses larger pipes for high-speed material transfer from input points to intermediate containers, while the second stage uses smaller pipes for conveying material from intermediate containers to the separator. This segmentation allows each stage to be optimized independently, reducing overall space requirements while maintaining conveying reliability.
Solution Approach 2:
The system changes the pipe diameter parameter along the conveying path to match the specific requirements of each stage. By using larger pipes in the first stage for rapid material collection and smaller pipes in the second stage for efficient material transfer to the separator, the system optimizes air flow requirements and reduces energy consumption while maintaining reliable conveying operation.
3Loss of energy
If intermediate containers are used for long-distance conveying, then pressure loss is reduced, but device complexity increases
Solution Approach 1:
The conveying system is divided into two distinct stages with different pipe size requirements. The first stage uses larger pipes for high-speed material transfer from input points to intermediate containers, while the second stage uses smaller pipes for conveying material from intermediate containers to the separator. This segmentation allows each stage to be optimized independently, reducing overall space requirements while maintaining conveying reliability.
Solution Approach 2:
An intermediate container is introduced as a mediator between the input points and the separator. This intermediate container receives material from multiple input points via larger pipes and then distributes it through smaller pipes to the separator, thereby reducing pressure loss over long distances while the added complexity is managed through the modular intermediate container design.
4Area of stationary object
If smaller pipe sizes are used, then space requirements are reduced, but pressure loss increases and conveying distance is limited
Solution Approach 1:
The conveying system is divided into two distinct stages with different pipe size requirements. The first stage uses larger pipes for high-speed material transfer from input points to intermediate containers, while the second stage uses smaller pipes for conveying material from intermediate containers to the separator. This segmentation allows each stage to be optimized independently, reducing overall space requirements while maintaining conveying reliability.
Solution Approach 2:
The system adds a temporal dimension to the conveying process by using intermediate containers to stage material accumulation. This allows the use of smaller pipes in the second stage without significantly increasing pressure loss, as the material is already consolidated in the intermediate container before being transferred to the separator through the smaller diameter piping.
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
This approach minimizes pressure loss, reduces energy consumption, and enables a more compact and efficient conveying system with lower air flow needs, resulting in cost savings and improved operational efficiency for long-distance waste conveying.
Implementation Method 1
the wastes are conveyed for long distances in a conveying pipe by means of a pressure difference, such as suction and replacement air, in a transport air flow
Implementation Method 2
a partial-vacuum apparatus is used to provide the pressure difference, in which apparatus a negative pressure is provided in the conveying pipe by means of partial-vacuum generators
Implementation Method 3
the wastes are conveyed for long distances in a conveying pipe by means of a pressure difference, such as suction and replacement air, in a transport air flow
Data Source
AI summary
A method and system for conveying material in a pneumatic material conveying system includes a material input point, a material conveying pipe connectable with a feed-in container, the system being configured to provide a pressure difference in the material conveying pipe that includes a partial-vacuum generator, and a separator device in which the transported material is separated from the transport air at an outlet end of the material conveying system. The material is conveyed in a first stage from the input point to a conveying pipe, into a container space of an intermediate container arranged between the input point and the separator device by a suction/pressure difference provided by the partial vacuum generator in a first time period, and the material conveyed into the container space of the intermediate container is conveyed by a suction/pressure difference provided by the partial-vacuum generator to the separator device.