Method and apparatus for treating the outlet air of a pneumatic waste conveying system
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Solution Overview
Problem
Pneumatic material conveying systems, particularly those used for waste transportation, face issues with odor nuisances, noise problems, and variable airflow rates due to partial-vacuum generators, which are not universally suitable and can lead to inefficiencies in air treatment.
Innovation Solution
The method involves introducing additional air into the conveying air before the output aperture of the partial-vacuum generator and further diluting odor-causing components by mixing it with the outlet air, using a lobe rotor blower to maintain a constant outblowing flow rate and reduce odor perception, while also cooling the generator to prevent overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a partial-vacuum generator is used to convey wastes, then the conveying function is achieved, but odor nuisances and noise problems occur in the outlet air
Solution Approach 1:
The patent introduces a second aperture that allows ambient air to enter the chamber as an intermediary substance. This additional air mixes with the outlet air from the partial-vacuum generator, diluting the odor-causing components and reducing noise levels without interfering with the waste conveying function.
Solution Approach 2:
The patent changes the composition parameter of the outlet air by introducing additional air through the second aperture. This alters the concentration of odor-causing substances and acoustic properties of the air mixture, thereby reducing odor nuisances and noise problems while maintaining conveying efficiency.
2Object-affected harmful factors
If additional air is introduced into the conveying air, then odor nuisances are reduced, but the airflow rate may become variable
Solution Approach 1:
The patent employs a lobe rotor blower that automatically maintains a substantially constant outblowing flow rate. The device self-regulates to compensate for variations caused by introducing additional air through the second aperture, ensuring stable airflow without requiring external control mechanisms.
Solution Approach 2:
The lobe rotor blower incorporates inherent feedback mechanisms that monitor and adjust the airflow to maintain constant outblowing flow rate. This automatic regulation ensures that the additional air introduced for odor reduction does not compromise airflow stability.
3Object-affected harmful factors
If a liquid-air ejector is used to bind odors, then odor nuisances are reduced, but the system requires a specific partial-vacuum generator type that is not universally suitable
Solution Approach 1:
The patent creates a universal solution that can be applied to any partial-vacuum generating device regardless of type. By introducing additional air through the second aperture, the system effectively reduces odors without requiring specific ejector designs, making it adaptable to vacuum pumps, ejector apparatus, and other partial-vacuum generators.
Solution Approach 2:
Instead of using liquid-air ejectors that require specific system configurations, the patent uses ambient air introduced through the second aperture as a universal intermediary. This approach binds and dilutes odors in a manner compatible with all types of partial-vacuum generating devices.
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 significantly reduces odor nuisances and maintains a consistent airflow rate, enhancing the efficiency of air treatment and reducing noise issues associated with pneumatic waste conveying systems.
Implementation Method 1
a pressure difference, in which apparatus a partial vacuum is achieved in the conveying pipe
Implementation Method 2
a partial vacuum is achieved in the conveying pipe with partial-vacuum generators
Implementation Method 3
additional air is brought into connection with the outlet air, which additional air dilutes the originators of odor in the air volume
Data Source
Figure 1~2
Figure 3a~3c
AI summary
Method for treating outlet air in a pneumatic waste conveying system, in which the outlet air is at least partly the conveying air to be used in waste conveying. In the method in a first phase additional air is brought into the body of conveying air in the partial-vacuum generator (2) of the pneumatic waste conveying system before the output aperture (35) of the partial-vacuum generator, and that in the method in a second phase additional air is brought into the body of outlet air as a consequence of the suction effect brought about by the outlet air in such a way that the outlet air and the additional air mix with each other at least partly. The invention also relates to an apparatus.