Rotatable Drum Inside Stationary Pressure Vessel for Waste Treatment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing waste treatment apparatuses, such as autoclaves, face challenges in extending component lifespan, reducing manufacturing costs, simplifying operation, and ensuring a secure seal, particularly in non-rotating pressure vessels used for treating materials under varying pressures.
Innovation Solution
A non-rotating pressure vessel design with a fixed position and a rotatable drum inside, equipped with a drive mechanism, agitation blades, and a steam supply system, allowing for efficient material agitation and processing without rotating the pressure vessel, facilitating secure clamping and easy mounting of steam and heating components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the pressure vessel is made rotatable to agitate waste inside, then material agitation effectiveness is improved, but the complexity of sealing and clamping mechanisms increases
Solution Approach 1:
The agitation function is segmented from the pressure vessel rotation. Instead of rotating the entire pressure vessel, only the internal drum rotates while the pressure vessel remains stationary. This segmentation allows the pressure vessel to have simple fixed sealing and clamping mechanisms while the rotating drum provides the agitation function through its rotation and internal helical structure.
Solution Approach 2:
The internal drum acts as an intermediary between the stationary pressure vessel and the waste material. The drum receives rotational motion from the drive mechanism and transfers it to the waste through its helical structure and rotation, achieving agitation without requiring the pressure vessel itself to rotate. This intermediary approach resolves the contradiction by isolating the rotation requirement from the sealing system.
2Productivity
If the pressure vessel is made rotatable for waste treatment, then material processing capability is improved, but the ease of mounting steam and heating components deteriorates
Solution Approach 1:
The heating and steam supply components are segmented from the rotating motion system. These components are mounted on the stationary pressure vessel or on the rotating drum in fixed positions relative to the drum structure, allowing for simple mounting without dealing with rotating connections. The drum rotation provides processing capability while the heating components remain in straightforward, maintainable positions.
3Productivity
If the pressure vessel is made rotatable to agitate waste, then treatment effectiveness is improved, but the useful life of sealing components deteriorates
Solution Approach 1:
The sealing components are segmented from the rotating system and placed on the stationary pressure vessel. This segmentation ensures that seals are not subjected to rotational stresses, vibration, and mechanical wear associated with rotating connections. The sealing components only experience static or minimal movement, dramatically extending their service life while the internal drum rotation provides the necessary treatment effectiveness.
Solution Approach 2:
The stationary pressure vessel with its fixed sealing components acts as an intermediary that isolates the sealing system from rotational wear. The rotating drum performs the agitation function while the stationary vessel with simple seals provides the pressure containment. This intermediary arrangement protects the sealing components from the harsh conditions of rotation, extending their useful life.
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 design enhances the useful life of components, reduces manufacturing costs, simplifies operation, and ensures a secure and pressure-tight seal, enabling effective treatment of materials under various pressures while maintaining ease of maintenance and efficient processing.
Implementation Method 1
a steam supply system supplying steam into the inner space of the drum
Implementation Method 2
a pressure regulating system to change pressure inside the pressure vessel
Data Source
AI summary
A pressure vessel and a drum rotatably arranged inside which has an inner space for material that is introduced into the pressure vessel. In various embodiments, a drive mechanism rotates the drum in relation to the pressure vessel. The drive mechanism can include a motor that can be located inside the pressure vessel in an interspace between the drum and the pressure vessel. Some embodiments include a door to close an opening of the pressure vessel and a part of the door can extend into an open end of the drum when the door is closed to keep the material in the drum and out of the interspace. In particular embodiments, a steam supply conduit extends into the drum at the closed end of the pressure vessel. In some embodiments, a helical agitation blade in the drum moves the material away from or toward the opening.